^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (c) 2008-2009 Cisco Systems, Inc. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) * Copyright (c) 2009 Intel Corporation. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Maintained at www.Open-FCoE.org
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/list.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/timer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/etherdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/ethtool.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/if_ether.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/if_vlan.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/errno.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <net/rtnetlink.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <scsi/fc/fc_els.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <scsi/fc/fc_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <scsi/fc/fc_fip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <scsi/fc/fc_encaps.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) #include <scsi/fc/fc_fcoe.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #include <scsi/fc/fc_fcp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <scsi/libfc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) #include <scsi/libfcoe.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #include "libfcoe.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) #define FCOE_CTLR_MIN_FKA 500 /* min keep alive (mS) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) #define FCOE_CTLR_DEF_FKA FIP_DEF_FKA /* default keep alive (mS) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static void fcoe_ctlr_timeout(struct timer_list *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) static void fcoe_ctlr_timer_work(struct work_struct *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) static void fcoe_ctlr_recv_work(struct work_struct *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) static int fcoe_ctlr_flogi_retry(struct fcoe_ctlr *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static void fcoe_ctlr_vn_start(struct fcoe_ctlr *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) static int fcoe_ctlr_vn_recv(struct fcoe_ctlr *, struct sk_buff *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) static void fcoe_ctlr_vn_timeout(struct fcoe_ctlr *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) static int fcoe_ctlr_vn_lookup(struct fcoe_ctlr *, u32, u8 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) static int fcoe_ctlr_vlan_recv(struct fcoe_ctlr *, struct sk_buff *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) static u8 fcoe_all_fcfs[ETH_ALEN] = FIP_ALL_FCF_MACS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) static u8 fcoe_all_enode[ETH_ALEN] = FIP_ALL_ENODE_MACS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) static u8 fcoe_all_vn2vn[ETH_ALEN] = FIP_ALL_VN2VN_MACS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) static u8 fcoe_all_p2p[ETH_ALEN] = FIP_ALL_P2P_MACS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static const char * const fcoe_ctlr_states[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) [FIP_ST_DISABLED] = "DISABLED",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) [FIP_ST_LINK_WAIT] = "LINK_WAIT",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) [FIP_ST_AUTO] = "AUTO",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) [FIP_ST_NON_FIP] = "NON_FIP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) [FIP_ST_ENABLED] = "ENABLED",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) [FIP_ST_VNMP_START] = "VNMP_START",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) [FIP_ST_VNMP_PROBE1] = "VNMP_PROBE1",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) [FIP_ST_VNMP_PROBE2] = "VNMP_PROBE2",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) [FIP_ST_VNMP_CLAIM] = "VNMP_CLAIM",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) [FIP_ST_VNMP_UP] = "VNMP_UP",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) static const char *fcoe_ctlr_state(enum fip_state state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) const char *cp = "unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) if (state < ARRAY_SIZE(fcoe_ctlr_states))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) cp = fcoe_ctlr_states[state];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) if (!cp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) cp = "unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) return cp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) * fcoe_ctlr_set_state() - Set and do debug printing for the new FIP state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) * @state: The new state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) static void fcoe_ctlr_set_state(struct fcoe_ctlr *fip, enum fip_state state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) if (state == fip->state)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) if (fip->lp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) LIBFCOE_FIP_DBG(fip, "state %s -> %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) fcoe_ctlr_state(fip->state), fcoe_ctlr_state(state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) fip->state = state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * fcoe_ctlr_mtu_valid() - Check if a FCF's MTU is valid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) * @fcf: The FCF to check
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) * Return non-zero if FCF fcoe_size has been validated.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) static inline int fcoe_ctlr_mtu_valid(const struct fcoe_fcf *fcf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return (fcf->flags & FIP_FL_SOL) != 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) * fcoe_ctlr_fcf_usable() - Check if a FCF is usable
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) * @fcf: The FCF to check
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) * Return non-zero if the FCF is usable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) static inline int fcoe_ctlr_fcf_usable(struct fcoe_fcf *fcf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) u16 flags = FIP_FL_SOL | FIP_FL_AVAIL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) return (fcf->flags & flags) == flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * fcoe_ctlr_map_dest() - Set flag and OUI for mapping destination addresses
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) static void fcoe_ctlr_map_dest(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (fip->mode == FIP_MODE_VN2VN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) hton24(fip->dest_addr, FIP_VN_FC_MAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) hton24(fip->dest_addr, FIP_DEF_FC_MAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) hton24(fip->dest_addr + 3, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) fip->map_dest = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * fcoe_ctlr_init() - Initialize the FCoE Controller instance
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * @fip: The FCoE controller to initialize
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * @mode: FIP mode to set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) void fcoe_ctlr_init(struct fcoe_ctlr *fip, enum fip_mode mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) fcoe_ctlr_set_state(fip, FIP_ST_LINK_WAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) fip->mode = mode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) fip->fip_resp = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) INIT_LIST_HEAD(&fip->fcfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) mutex_init(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) spin_lock_init(&fip->ctlr_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) fip->flogi_oxid = FC_XID_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) timer_setup(&fip->timer, fcoe_ctlr_timeout, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) INIT_WORK(&fip->timer_work, fcoe_ctlr_timer_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) INIT_WORK(&fip->recv_work, fcoe_ctlr_recv_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) skb_queue_head_init(&fip->fip_recv_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) EXPORT_SYMBOL(fcoe_ctlr_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) * fcoe_sysfs_fcf_add() - Add a fcoe_fcf{,_device} to a fcoe_ctlr{,_device}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) * @new: The newly discovered FCF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) * Called with fip->ctlr_mutex held
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) static int fcoe_sysfs_fcf_add(struct fcoe_fcf *new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct fcoe_ctlr *fip = new->fip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) struct fcoe_ctlr_device *ctlr_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) struct fcoe_fcf_device *temp, *fcf_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) int rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) LIBFCOE_FIP_DBG(fip, "New FCF fab %16.16llx mac %pM\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) new->fabric_name, new->fcf_mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) temp = kzalloc(sizeof(*temp), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) if (!temp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) temp->fabric_name = new->fabric_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) temp->switch_name = new->switch_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) temp->fc_map = new->fc_map;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) temp->vfid = new->vfid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) memcpy(temp->mac, new->fcf_mac, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) temp->priority = new->pri;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) temp->fka_period = new->fka_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) temp->selected = 0; /* default to unselected */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) * If ctlr_dev doesn't exist then it means we're a libfcoe user
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) * who doesn't use fcoe_syfs and didn't allocate a fcoe_ctlr_device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) * fnic would be an example of a driver with this behavior. In this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * case we want to add the fcoe_fcf to the fcoe_ctlr list, but we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * don't want to make sysfs changes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) ctlr_dev = fcoe_ctlr_to_ctlr_dev(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (ctlr_dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) mutex_lock(&ctlr_dev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) fcf_dev = fcoe_fcf_device_add(ctlr_dev, temp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) if (unlikely(!fcf_dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) rc = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) mutex_unlock(&ctlr_dev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) * The fcoe_sysfs layer can return a CONNECTED fcf that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) * has a priv (fcf was never deleted) or a CONNECTED fcf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) * that doesn't have a priv (fcf was deleted). However,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) * libfcoe will always delete FCFs before trying to add
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) * them. This is ensured because both recv_adv and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) * age_fcfs are protected by the the fcoe_ctlr's mutex.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) * This means that we should never get a FCF with a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) * non-NULL priv pointer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) BUG_ON(fcf_dev->priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) fcf_dev->priv = new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) new->fcf_dev = fcf_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) mutex_unlock(&ctlr_dev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) list_add(&new->list, &fip->fcfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) fip->fcf_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) kfree(temp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) * fcoe_sysfs_fcf_del() - Remove a fcoe_fcf{,_device} to a fcoe_ctlr{,_device}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) * @new: The FCF to be removed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) * Called with fip->ctlr_mutex held
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) static void fcoe_sysfs_fcf_del(struct fcoe_fcf *new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) struct fcoe_ctlr *fip = new->fip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) struct fcoe_ctlr_device *cdev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) struct fcoe_fcf_device *fcf_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) list_del(&new->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) fip->fcf_count--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) * If ctlr_dev doesn't exist then it means we're a libfcoe user
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) * who doesn't use fcoe_syfs and didn't allocate a fcoe_ctlr_device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) * or a fcoe_fcf_device.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) * fnic would be an example of a driver with this behavior. In this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) * case we want to remove the fcoe_fcf from the fcoe_ctlr list (above),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) * but we don't want to make sysfs changes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) cdev = fcoe_ctlr_to_ctlr_dev(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) if (cdev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) mutex_lock(&cdev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) fcf_dev = fcoe_fcf_to_fcf_dev(new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) WARN_ON(!fcf_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) new->fcf_dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) fcoe_fcf_device_delete(fcf_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) mutex_unlock(&cdev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) kfree(new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) * fcoe_ctlr_reset_fcfs() - Reset and free all FCFs for a controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) * @fip: The FCoE controller whose FCFs are to be reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) * Called with &fcoe_ctlr lock held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) static void fcoe_ctlr_reset_fcfs(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) struct fcoe_fcf *fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) struct fcoe_fcf *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) fip->sel_fcf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) list_for_each_entry_safe(fcf, next, &fip->fcfs, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) fcoe_sysfs_fcf_del(fcf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) WARN_ON(fip->fcf_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) fip->sel_time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) * fcoe_ctlr_destroy() - Disable and tear down a FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) * @fip: The FCoE controller to tear down
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) * This is called by FCoE drivers before freeing the &fcoe_ctlr.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) * The receive handler will have been deleted before this to guarantee
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) * that no more recv_work will be scheduled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) * The timer routine will simply return once we set FIP_ST_DISABLED.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) * This guarantees that no further timeouts or work will be scheduled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) void fcoe_ctlr_destroy(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) cancel_work_sync(&fip->recv_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) skb_queue_purge(&fip->fip_recv_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) fcoe_ctlr_set_state(fip, FIP_ST_DISABLED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) fcoe_ctlr_reset_fcfs(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) del_timer_sync(&fip->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) cancel_work_sync(&fip->timer_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) EXPORT_SYMBOL(fcoe_ctlr_destroy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) * fcoe_ctlr_announce() - announce new FCF selection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) * Also sets the destination MAC for FCoE and control packets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) * Called with neither ctlr_mutex nor ctlr_lock held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) static void fcoe_ctlr_announce(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) struct fcoe_fcf *sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) struct fcoe_fcf *fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) spin_lock_bh(&fip->ctlr_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) kfree_skb(fip->flogi_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) fip->flogi_req = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) list_for_each_entry(fcf, &fip->fcfs, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) fcf->flogi_sent = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) spin_unlock_bh(&fip->ctlr_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) sel = fip->sel_fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) if (sel && ether_addr_equal(sel->fcf_mac, fip->dest_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) if (!is_zero_ether_addr(fip->dest_addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) printk(KERN_NOTICE "libfcoe: host%d: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) "FIP Fibre-Channel Forwarder MAC %pM deselected\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) fip->lp->host->host_no, fip->dest_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) eth_zero_addr(fip->dest_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) if (sel) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) printk(KERN_INFO "libfcoe: host%d: FIP selected "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) "Fibre-Channel Forwarder MAC %pM\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) fip->lp->host->host_no, sel->fcf_mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) memcpy(fip->dest_addr, sel->fcoe_mac, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) fip->map_dest = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) * fcoe_ctlr_fcoe_size() - Return the maximum FCoE size required for VN_Port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) * @fip: The FCoE controller to get the maximum FCoE size from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) * Returns the maximum packet size including the FCoE header and trailer,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) * but not including any Ethernet or VLAN headers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) static inline u32 fcoe_ctlr_fcoe_size(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) * Determine the max FCoE frame size allowed, including
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) * FCoE header and trailer.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) * Note: lp->mfs is currently the payload size, not the frame size.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) return fip->lp->mfs + sizeof(struct fc_frame_header) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) sizeof(struct fcoe_hdr) + sizeof(struct fcoe_crc_eof);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) * fcoe_ctlr_solicit() - Send a FIP solicitation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) * @fip: The FCoE controller to send the solicitation on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) * @fcf: The destination FCF (if NULL, a multicast solicitation is sent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) static void fcoe_ctlr_solicit(struct fcoe_ctlr *fip, struct fcoe_fcf *fcf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) struct fip_sol {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) struct ethhdr eth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) struct fip_header fip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) struct {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) struct fip_mac_desc mac;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) struct fip_wwn_desc wwnn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) struct fip_size_desc size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) } __packed desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) } __packed * sol;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) u32 fcoe_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) skb = dev_alloc_skb(sizeof(*sol));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) sol = (struct fip_sol *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) memset(sol, 0, sizeof(*sol));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) memcpy(sol->eth.h_dest, fcf ? fcf->fcf_mac : fcoe_all_fcfs, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) memcpy(sol->eth.h_source, fip->ctl_src_addr, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) sol->eth.h_proto = htons(ETH_P_FIP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) sol->fip.fip_ver = FIP_VER_ENCAPS(FIP_VER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) sol->fip.fip_op = htons(FIP_OP_DISC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) sol->fip.fip_subcode = FIP_SC_SOL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) sol->fip.fip_dl_len = htons(sizeof(sol->desc) / FIP_BPW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) sol->fip.fip_flags = htons(FIP_FL_FPMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) if (fip->spma)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) sol->fip.fip_flags |= htons(FIP_FL_SPMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) sol->desc.mac.fd_desc.fip_dtype = FIP_DT_MAC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) sol->desc.mac.fd_desc.fip_dlen = sizeof(sol->desc.mac) / FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) memcpy(sol->desc.mac.fd_mac, fip->ctl_src_addr, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) sol->desc.wwnn.fd_desc.fip_dtype = FIP_DT_NAME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) sol->desc.wwnn.fd_desc.fip_dlen = sizeof(sol->desc.wwnn) / FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) put_unaligned_be64(fip->lp->wwnn, &sol->desc.wwnn.fd_wwn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) fcoe_size = fcoe_ctlr_fcoe_size(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) sol->desc.size.fd_desc.fip_dtype = FIP_DT_FCOE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) sol->desc.size.fd_desc.fip_dlen = sizeof(sol->desc.size) / FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) sol->desc.size.fd_size = htons(fcoe_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) skb_put(skb, sizeof(*sol));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) skb->protocol = htons(ETH_P_FIP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) skb->priority = fip->priority;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) skb_reset_mac_header(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) skb_reset_network_header(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) fip->send(fip, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) if (!fcf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) fip->sol_time = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) * fcoe_ctlr_link_up() - Start FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) * @fip: The FCoE controller to start
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) * Called from the LLD when the network link is ready.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) void fcoe_ctlr_link_up(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) if (fip->state == FIP_ST_NON_FIP || fip->state == FIP_ST_AUTO) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) fc_linkup(fip->lp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) } else if (fip->state == FIP_ST_LINK_WAIT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) if (fip->mode == FIP_MODE_NON_FIP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) fcoe_ctlr_set_state(fip, FIP_ST_NON_FIP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) fcoe_ctlr_set_state(fip, FIP_ST_AUTO);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) switch (fip->mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) LIBFCOE_FIP_DBG(fip, "invalid mode %d\n", fip->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) case FIP_MODE_AUTO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) LIBFCOE_FIP_DBG(fip, "%s", "setting AUTO mode.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) case FIP_MODE_FABRIC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) case FIP_MODE_NON_FIP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) fc_linkup(fip->lp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) fcoe_ctlr_solicit(fip, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) case FIP_MODE_VN2VN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) fcoe_ctlr_vn_start(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) fc_linkup(fip->lp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) EXPORT_SYMBOL(fcoe_ctlr_link_up);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) * fcoe_ctlr_reset() - Reset a FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) * @fip: The FCoE controller to reset
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) static void fcoe_ctlr_reset(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) fcoe_ctlr_reset_fcfs(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) del_timer(&fip->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) fip->ctlr_ka_time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) fip->port_ka_time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) fip->sol_time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) fip->flogi_oxid = FC_XID_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) fcoe_ctlr_map_dest(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) * fcoe_ctlr_link_down() - Stop a FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) * @fip: The FCoE controller to be stopped
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) * Returns non-zero if the link was up and now isn't.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) * Called from the LLD when the network link is not ready.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) * There may be multiple calls while the link is down.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) int fcoe_ctlr_link_down(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) int link_dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) LIBFCOE_FIP_DBG(fip, "link down.\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) fcoe_ctlr_reset(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) link_dropped = fip->state != FIP_ST_LINK_WAIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) fcoe_ctlr_set_state(fip, FIP_ST_LINK_WAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) if (link_dropped)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) fc_linkdown(fip->lp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) return link_dropped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) EXPORT_SYMBOL(fcoe_ctlr_link_down);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516) * fcoe_ctlr_send_keep_alive() - Send a keep-alive to the selected FCF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) * @fip: The FCoE controller to send the FKA on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) * @lport: libfc fc_lport to send from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) * @ports: 0 for controller keep-alive, 1 for port keep-alive
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) * @sa: The source MAC address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) * A controller keep-alive is sent every fka_period (typically 8 seconds).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) * The source MAC is the native MAC address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) * A port keep-alive is sent every 90 seconds while logged in.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) * The source MAC is the assigned mapped source address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) * The destination is the FCF's F-port.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) static void fcoe_ctlr_send_keep_alive(struct fcoe_ctlr *fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) struct fc_lport *lport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) int ports, u8 *sa)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) struct fip_kal {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) struct ethhdr eth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) struct fip_header fip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) struct fip_mac_desc mac;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) } __packed * kal;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) struct fip_vn_desc *vn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) u32 len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) struct fc_lport *lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) struct fcoe_fcf *fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) fcf = fip->sel_fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) lp = fip->lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) if (!fcf || (ports && !lp->port_id))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) len = sizeof(*kal) + ports * sizeof(*vn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) skb = dev_alloc_skb(len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) kal = (struct fip_kal *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) memset(kal, 0, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) memcpy(kal->eth.h_dest, fcf->fcf_mac, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) memcpy(kal->eth.h_source, sa, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) kal->eth.h_proto = htons(ETH_P_FIP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) kal->fip.fip_ver = FIP_VER_ENCAPS(FIP_VER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) kal->fip.fip_op = htons(FIP_OP_CTRL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) kal->fip.fip_subcode = FIP_SC_KEEP_ALIVE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) kal->fip.fip_dl_len = htons((sizeof(kal->mac) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) ports * sizeof(*vn)) / FIP_BPW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) kal->fip.fip_flags = htons(FIP_FL_FPMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) if (fip->spma)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) kal->fip.fip_flags |= htons(FIP_FL_SPMA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) kal->mac.fd_desc.fip_dtype = FIP_DT_MAC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) kal->mac.fd_desc.fip_dlen = sizeof(kal->mac) / FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) memcpy(kal->mac.fd_mac, fip->ctl_src_addr, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) if (ports) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) vn = (struct fip_vn_desc *)(kal + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) vn->fd_desc.fip_dtype = FIP_DT_VN_ID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) vn->fd_desc.fip_dlen = sizeof(*vn) / FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) memcpy(vn->fd_mac, fip->get_src_addr(lport), ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) hton24(vn->fd_fc_id, lport->port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) put_unaligned_be64(lport->wwpn, &vn->fd_wwpn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) skb_put(skb, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) skb->protocol = htons(ETH_P_FIP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) skb->priority = fip->priority;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) skb_reset_mac_header(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) skb_reset_network_header(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) fip->send(fip, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) * fcoe_ctlr_encaps() - Encapsulate an ELS frame for FIP, without sending it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) * @fip: The FCoE controller for the ELS frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) * @lport: The local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) * @dtype: The FIP descriptor type for the frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) * @skb: The FCoE ELS frame including FC header but no FCoE headers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) * @d_id: The destination port ID.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) * Returns non-zero error code on failure.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) * The caller must check that the length is a multiple of 4.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) * The @skb must have enough headroom (28 bytes) and tailroom (8 bytes).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) * Headroom includes the FIP encapsulation description, FIP header, and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) * Ethernet header. The tailroom is for the FIP MAC descriptor.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) static int fcoe_ctlr_encaps(struct fcoe_ctlr *fip, struct fc_lport *lport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) u8 dtype, struct sk_buff *skb, u32 d_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) struct fip_encaps_head {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) struct ethhdr eth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) struct fip_header fip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) struct fip_encaps encaps;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) } __packed * cap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) struct fc_frame_header *fh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) struct fip_mac_desc *mac;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) struct fcoe_fcf *fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) size_t dlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) u16 fip_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) u8 op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) fh = (struct fc_frame_header *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) op = *(u8 *)(fh + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) dlen = sizeof(struct fip_encaps) + skb->len; /* len before push */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) cap = skb_push(skb, sizeof(*cap));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) memset(cap, 0, sizeof(*cap));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) if (lport->point_to_multipoint) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) if (fcoe_ctlr_vn_lookup(fip, d_id, cap->eth.h_dest))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) fip_flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) fcf = fip->sel_fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) if (!fcf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) fip_flags = fcf->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) fip_flags &= fip->spma ? FIP_FL_SPMA | FIP_FL_FPMA :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) FIP_FL_FPMA;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) if (!fip_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) memcpy(cap->eth.h_dest, fcf->fcf_mac, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) memcpy(cap->eth.h_source, fip->ctl_src_addr, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) cap->eth.h_proto = htons(ETH_P_FIP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) cap->fip.fip_ver = FIP_VER_ENCAPS(FIP_VER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) cap->fip.fip_op = htons(FIP_OP_LS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) if (op == ELS_LS_ACC || op == ELS_LS_RJT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) cap->fip.fip_subcode = FIP_SC_REP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) cap->fip.fip_subcode = FIP_SC_REQ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) cap->fip.fip_flags = htons(fip_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) cap->encaps.fd_desc.fip_dtype = dtype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) cap->encaps.fd_desc.fip_dlen = dlen / FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) if (op != ELS_LS_RJT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) dlen += sizeof(*mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) mac = skb_put_zero(skb, sizeof(*mac));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) mac->fd_desc.fip_dtype = FIP_DT_MAC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) mac->fd_desc.fip_dlen = sizeof(*mac) / FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) if (dtype != FIP_DT_FLOGI && dtype != FIP_DT_FDISC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) memcpy(mac->fd_mac, fip->get_src_addr(lport), ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) } else if (fip->mode == FIP_MODE_VN2VN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) hton24(mac->fd_mac, FIP_VN_FC_MAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) hton24(mac->fd_mac + 3, fip->port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) } else if (fip_flags & FIP_FL_SPMA) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) LIBFCOE_FIP_DBG(fip, "FLOGI/FDISC sent with SPMA\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) memcpy(mac->fd_mac, fip->ctl_src_addr, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) LIBFCOE_FIP_DBG(fip, "FLOGI/FDISC sent with FPMA\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) /* FPMA only FLOGI. Must leave the MAC desc zeroed. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) cap->fip.fip_dl_len = htons(dlen / FIP_BPW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) skb->protocol = htons(ETH_P_FIP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) skb->priority = fip->priority;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) skb_reset_mac_header(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) skb_reset_network_header(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682) * fcoe_ctlr_els_send() - Send an ELS frame encapsulated by FIP if appropriate.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) * @fip: FCoE controller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) * @lport: libfc fc_lport to send from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) * @skb: FCoE ELS frame including FC header but no FCoE headers.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) * Returns a non-zero error code if the frame should not be sent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) * Returns zero if the caller should send the frame with FCoE encapsulation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) * The caller must check that the length is a multiple of 4.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) * The SKB must have enough headroom (28 bytes) and tailroom (8 bytes).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) * The the skb must also be an fc_frame.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) * This is called from the lower-level driver with spinlocks held,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) * so we must not take a mutex here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) int fcoe_ctlr_els_send(struct fcoe_ctlr *fip, struct fc_lport *lport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) struct fc_frame *fp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) struct fc_frame_header *fh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) u16 old_xid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) u8 op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) u8 mac[ETH_ALEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) fp = container_of(skb, struct fc_frame, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) fh = (struct fc_frame_header *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) op = *(u8 *)(fh + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) if (op == ELS_FLOGI && fip->mode != FIP_MODE_VN2VN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) old_xid = fip->flogi_oxid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) fip->flogi_oxid = ntohs(fh->fh_ox_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) if (fip->state == FIP_ST_AUTO) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) if (old_xid == FC_XID_UNKNOWN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) fip->flogi_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) fip->flogi_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) if (fip->flogi_count < 3)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) fcoe_ctlr_map_dest(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) if (fip->state == FIP_ST_NON_FIP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) fcoe_ctlr_map_dest(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) if (fip->state == FIP_ST_NON_FIP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) if (!fip->sel_fcf && fip->mode != FIP_MODE_VN2VN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) switch (op) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) case ELS_FLOGI:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) op = FIP_DT_FLOGI;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) if (fip->mode == FIP_MODE_VN2VN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) spin_lock_bh(&fip->ctlr_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) kfree_skb(fip->flogi_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) fip->flogi_req = skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) fip->flogi_req_send = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) spin_unlock_bh(&fip->ctlr_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) schedule_work(&fip->timer_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) return -EINPROGRESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) case ELS_FDISC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) if (ntoh24(fh->fh_s_id))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) op = FIP_DT_FDISC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) case ELS_LOGO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) if (fip->mode == FIP_MODE_VN2VN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) if (fip->state != FIP_ST_VNMP_UP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) if (ntoh24(fh->fh_d_id) == FC_FID_FLOGI)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) if (fip->state != FIP_ST_ENABLED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) if (ntoh24(fh->fh_d_id) != FC_FID_FLOGI)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) op = FIP_DT_LOGO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) case ELS_LS_ACC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) * If non-FIP, we may have gotten an SID by accepting an FLOGI
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) * from a point-to-point connection. Switch to using
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) * the source mac based on the SID. The destination
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) * MAC in this case would have been set by receiving the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) * FLOGI.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) if (fip->state == FIP_ST_NON_FIP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) if (fip->flogi_oxid == FC_XID_UNKNOWN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) fip->flogi_oxid = FC_XID_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) fc_fcoe_set_mac(mac, fh->fh_d_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) fip->update_mac(lport, mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) case ELS_LS_RJT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) op = fr_encaps(fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) if (op)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) if (fip->state != FIP_ST_ENABLED &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) fip->state != FIP_ST_VNMP_UP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) LIBFCOE_FIP_DBG(fip, "els_send op %u d_id %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) op, ntoh24(fh->fh_d_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) if (fcoe_ctlr_encaps(fip, lport, op, skb, ntoh24(fh->fh_d_id)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) fip->send(fip, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) return -EINPROGRESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) drop:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) LIBFCOE_FIP_DBG(fip, "drop els_send op %u d_id %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) op, ntoh24(fh->fh_d_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) EXPORT_SYMBOL(fcoe_ctlr_els_send);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) * fcoe_ctlr_age_fcfs() - Reset and free all old FCFs for a controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) * @fip: The FCoE controller to free FCFs on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) * Called with lock held and preemption disabled.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) * An FCF is considered old if we have missed two advertisements.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) * That is, there have been no valid advertisement from it for 2.5
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) * times its keep-alive period.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) * In addition, determine the time when an FCF selection can occur.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) * Also, increment the MissDiscAdvCount when no advertisement is received
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) * for the corresponding FCF for 1.5 * FKA_ADV_PERIOD (FC-BB-5 LESB).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) * Returns the time in jiffies for the next call.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) static unsigned long fcoe_ctlr_age_fcfs(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) struct fcoe_fcf *fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) struct fcoe_fcf *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) unsigned long next_timer = jiffies + msecs_to_jiffies(FIP_VN_KA_PERIOD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) unsigned long deadline;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) unsigned long sel_time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) struct list_head del_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) struct fc_stats *stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) INIT_LIST_HEAD(&del_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) stats = per_cpu_ptr(fip->lp->stats, get_cpu());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) list_for_each_entry_safe(fcf, next, &fip->fcfs, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) deadline = fcf->time + fcf->fka_period + fcf->fka_period / 2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) if (fip->sel_fcf == fcf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) if (time_after(jiffies, deadline)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) stats->MissDiscAdvCount++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) printk(KERN_INFO "libfcoe: host%d: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) "Missing Discovery Advertisement "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) "for fab %16.16llx count %lld\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) fip->lp->host->host_no, fcf->fabric_name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) stats->MissDiscAdvCount);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) } else if (time_after(next_timer, deadline))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) next_timer = deadline;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) deadline += fcf->fka_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) if (time_after_eq(jiffies, deadline)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) if (fip->sel_fcf == fcf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) fip->sel_fcf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) * Move to delete list so we can call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) * fcoe_sysfs_fcf_del (which can sleep)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) * after the put_cpu().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) list_del(&fcf->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) list_add(&fcf->list, &del_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) stats->VLinkFailureCount++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) if (time_after(next_timer, deadline))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) next_timer = deadline;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) if (fcoe_ctlr_mtu_valid(fcf) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) (!sel_time || time_before(sel_time, fcf->time)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) sel_time = fcf->time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) put_cpu();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) list_for_each_entry_safe(fcf, next, &del_list, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) /* Removes fcf from current list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) fcoe_sysfs_fcf_del(fcf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) if (sel_time && !fip->sel_fcf && !fip->sel_time) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) sel_time += msecs_to_jiffies(FCOE_CTLR_START_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) fip->sel_time = sel_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) return next_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) * fcoe_ctlr_parse_adv() - Decode a FIP advertisement into a new FCF entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) * @fip: The FCoE controller receiving the advertisement
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) * @skb: The received FIP advertisement frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) * @fcf: The resulting FCF entry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) * Returns zero on a valid parsed advertisement,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) * otherwise returns non zero value.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) static int fcoe_ctlr_parse_adv(struct fcoe_ctlr *fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) struct sk_buff *skb, struct fcoe_fcf *fcf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) struct fip_header *fiph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) struct fip_desc *desc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) struct fip_wwn_desc *wwn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) struct fip_fab_desc *fab;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) struct fip_fka_desc *fka;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) unsigned long t;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) size_t rlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) size_t dlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) u32 desc_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) memset(fcf, 0, sizeof(*fcf));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) fcf->fka_period = msecs_to_jiffies(FCOE_CTLR_DEF_FKA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) fiph = (struct fip_header *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) fcf->flags = ntohs(fiph->fip_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) * mask of required descriptors. validating each one clears its bit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) desc_mask = BIT(FIP_DT_PRI) | BIT(FIP_DT_MAC) | BIT(FIP_DT_NAME) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) BIT(FIP_DT_FAB) | BIT(FIP_DT_FKA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) rlen = ntohs(fiph->fip_dl_len) * 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) if (rlen + sizeof(*fiph) > skb->len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) desc = (struct fip_desc *)(fiph + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) while (rlen > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) dlen = desc->fip_dlen * FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) if (dlen < sizeof(*desc) || dlen > rlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) /* Drop Adv if there are duplicate critical descriptors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) if ((desc->fip_dtype < 32) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) !(desc_mask & 1U << desc->fip_dtype)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) LIBFCOE_FIP_DBG(fip, "Duplicate Critical "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) "Descriptors in FIP adv\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) switch (desc->fip_dtype) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) case FIP_DT_PRI:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) if (dlen != sizeof(struct fip_pri_desc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) goto len_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) fcf->pri = ((struct fip_pri_desc *)desc)->fd_pri;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) desc_mask &= ~BIT(FIP_DT_PRI);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) case FIP_DT_MAC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) if (dlen != sizeof(struct fip_mac_desc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) goto len_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) memcpy(fcf->fcf_mac,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) ((struct fip_mac_desc *)desc)->fd_mac,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) memcpy(fcf->fcoe_mac, fcf->fcf_mac, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) if (!is_valid_ether_addr(fcf->fcf_mac)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) LIBFCOE_FIP_DBG(fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) "Invalid MAC addr %pM in FIP adv\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) fcf->fcf_mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) desc_mask &= ~BIT(FIP_DT_MAC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) case FIP_DT_NAME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) if (dlen != sizeof(struct fip_wwn_desc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) goto len_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) wwn = (struct fip_wwn_desc *)desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) fcf->switch_name = get_unaligned_be64(&wwn->fd_wwn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) desc_mask &= ~BIT(FIP_DT_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) case FIP_DT_FAB:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) if (dlen != sizeof(struct fip_fab_desc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) goto len_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) fab = (struct fip_fab_desc *)desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) fcf->fabric_name = get_unaligned_be64(&fab->fd_wwn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) fcf->vfid = ntohs(fab->fd_vfid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) fcf->fc_map = ntoh24(fab->fd_map);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) desc_mask &= ~BIT(FIP_DT_FAB);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) case FIP_DT_FKA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) if (dlen != sizeof(struct fip_fka_desc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) goto len_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) fka = (struct fip_fka_desc *)desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) if (fka->fd_flags & FIP_FKA_ADV_D)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) fcf->fd_flags = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) t = ntohl(fka->fd_fka_period);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) if (t >= FCOE_CTLR_MIN_FKA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) fcf->fka_period = msecs_to_jiffies(t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) desc_mask &= ~BIT(FIP_DT_FKA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) case FIP_DT_MAP_OUI:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) case FIP_DT_FCOE_SIZE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) case FIP_DT_FLOGI:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) case FIP_DT_FDISC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) case FIP_DT_LOGO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) case FIP_DT_ELP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) LIBFCOE_FIP_DBG(fip, "unexpected descriptor type %x "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) "in FIP adv\n", desc->fip_dtype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) /* standard says ignore unknown descriptors >= 128 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) if (desc->fip_dtype < FIP_DT_NON_CRITICAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) desc = (struct fip_desc *)((char *)desc + dlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) rlen -= dlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) if (!fcf->fc_map || (fcf->fc_map & 0x10000))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) if (!fcf->switch_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) if (desc_mask) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) LIBFCOE_FIP_DBG(fip, "adv missing descriptors mask %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) desc_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) len_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) LIBFCOE_FIP_DBG(fip, "FIP length error in descriptor type %x len %zu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) desc->fip_dtype, dlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) * fcoe_ctlr_recv_adv() - Handle an incoming advertisement
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) * @fip: The FCoE controller receiving the advertisement
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) * @skb: The received FIP packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) static void fcoe_ctlr_recv_adv(struct fcoe_ctlr *fip, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) struct fcoe_fcf *fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) struct fcoe_fcf new;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) unsigned long sol_tov = msecs_to_jiffies(FCOE_CTLR_SOL_TOV);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) int first = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) int mtu_valid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) int found = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) int rc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) if (fcoe_ctlr_parse_adv(fip, skb, &new))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) first = list_empty(&fip->fcfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) list_for_each_entry(fcf, &fip->fcfs, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) if (fcf->switch_name == new.switch_name &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) fcf->fabric_name == new.fabric_name &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) fcf->fc_map == new.fc_map &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) ether_addr_equal(fcf->fcf_mac, new.fcf_mac)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) found = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) if (!found) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) if (fip->fcf_count >= FCOE_CTLR_FCF_LIMIT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) fcf = kmalloc(sizeof(*fcf), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) if (!fcf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) memcpy(fcf, &new, sizeof(new));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) fcf->fip = fip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) rc = fcoe_sysfs_fcf_add(fcf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) printk(KERN_ERR "Failed to allocate sysfs instance "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) "for FCF, fab %16.16llx mac %pM\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) new.fabric_name, new.fcf_mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) kfree(fcf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) * Update the FCF's keep-alive descriptor flags.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) * Other flag changes from new advertisements are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) * ignored after a solicited advertisement is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) * received and the FCF is selectable (usable).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) fcf->fd_flags = new.fd_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) if (!fcoe_ctlr_fcf_usable(fcf))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) fcf->flags = new.flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) if (fcf == fip->sel_fcf && !fcf->fd_flags) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) fip->ctlr_ka_time -= fcf->fka_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) fip->ctlr_ka_time += new.fka_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) if (time_before(fip->ctlr_ka_time, fip->timer.expires))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) mod_timer(&fip->timer, fip->ctlr_ka_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) fcf->fka_period = new.fka_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) memcpy(fcf->fcf_mac, new.fcf_mac, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) mtu_valid = fcoe_ctlr_mtu_valid(fcf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) fcf->time = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) if (!found)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) LIBFCOE_FIP_DBG(fip, "New FCF fab %16.16llx mac %pM\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) fcf->fabric_name, fcf->fcf_mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) * If this advertisement is not solicited and our max receive size
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) * hasn't been verified, send a solicited advertisement.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) if (!mtu_valid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) fcoe_ctlr_solicit(fip, fcf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) * If its been a while since we did a solicit, and this is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) * the first advertisement we've received, do a multicast
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) * solicitation to gather as many advertisements as we can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) * before selection occurs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) if (first && time_after(jiffies, fip->sol_time + sol_tov))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) fcoe_ctlr_solicit(fip, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) * Put this FCF at the head of the list for priority among equals.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) * This helps in the case of an NPV switch which insists we use
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) * the FCF that answers multicast solicitations, not the others that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) * are sending periodic multicast advertisements.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) if (mtu_valid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) list_move(&fcf->list, &fip->fcfs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) * If this is the first validated FCF, note the time and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) * set a timer to trigger selection.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) if (mtu_valid && !fip->sel_fcf && !fip->sel_time &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) fcoe_ctlr_fcf_usable(fcf)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) fip->sel_time = jiffies +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) msecs_to_jiffies(FCOE_CTLR_START_DELAY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) if (!timer_pending(&fip->timer) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) time_before(fip->sel_time, fip->timer.expires))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) mod_timer(&fip->timer, fip->sel_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) * fcoe_ctlr_recv_els() - Handle an incoming FIP encapsulated ELS frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) * @fip: The FCoE controller which received the packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) * @skb: The received FIP packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) static void fcoe_ctlr_recv_els(struct fcoe_ctlr *fip, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) struct fc_lport *lport = fip->lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) struct fip_header *fiph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) struct fc_frame *fp = (struct fc_frame *)skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) struct fc_frame_header *fh = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) struct fip_desc *desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) struct fip_encaps *els;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) struct fcoe_fcf *sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) struct fc_stats *stats;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) enum fip_desc_type els_dtype = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) u8 els_op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) u8 sub;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) u8 granted_mac[ETH_ALEN] = { 0 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) size_t els_len = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) size_t rlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) size_t dlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) u32 desc_mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) u32 desc_cnt = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) fiph = (struct fip_header *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) sub = fiph->fip_subcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) if (sub != FIP_SC_REQ && sub != FIP_SC_REP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) rlen = ntohs(fiph->fip_dl_len) * 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) if (rlen + sizeof(*fiph) > skb->len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) desc = (struct fip_desc *)(fiph + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) while (rlen > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) desc_cnt++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) dlen = desc->fip_dlen * FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) if (dlen < sizeof(*desc) || dlen > rlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) /* Drop ELS if there are duplicate critical descriptors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) if (desc->fip_dtype < 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) if ((desc->fip_dtype != FIP_DT_MAC) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) (desc_mask & 1U << desc->fip_dtype)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) LIBFCOE_FIP_DBG(fip, "Duplicate Critical "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) "Descriptors in FIP ELS\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) desc_mask |= (1 << desc->fip_dtype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) switch (desc->fip_dtype) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) case FIP_DT_MAC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) sel = fip->sel_fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) if (desc_cnt == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) LIBFCOE_FIP_DBG(fip, "FIP descriptors "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) "received out of order\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) * Some switch implementations send two MAC descriptors,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) * with first MAC(granted_mac) being the FPMA, and the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) * second one(fcoe_mac) is used as destination address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) * for sending/receiving FCoE packets. FIP traffic is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) * sent using fip_mac. For regular switches, both
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) * fip_mac and fcoe_mac would be the same.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) if (desc_cnt == 2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) memcpy(granted_mac,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) ((struct fip_mac_desc *)desc)->fd_mac,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) if (dlen != sizeof(struct fip_mac_desc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) goto len_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) if ((desc_cnt == 3) && (sel))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) memcpy(sel->fcoe_mac,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) ((struct fip_mac_desc *)desc)->fd_mac,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) case FIP_DT_FLOGI:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) case FIP_DT_FDISC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) case FIP_DT_LOGO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) case FIP_DT_ELP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) if (desc_cnt != 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) LIBFCOE_FIP_DBG(fip, "FIP descriptors "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) "received out of order\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) if (fh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) if (dlen < sizeof(*els) + sizeof(*fh) + 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) goto len_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) els_len = dlen - sizeof(*els);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) els = (struct fip_encaps *)desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) fh = (struct fc_frame_header *)(els + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) els_dtype = desc->fip_dtype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) LIBFCOE_FIP_DBG(fip, "unexpected descriptor type %x "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) "in FIP adv\n", desc->fip_dtype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) /* standard says ignore unknown descriptors >= 128 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) if (desc->fip_dtype < FIP_DT_NON_CRITICAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) if (desc_cnt <= 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) LIBFCOE_FIP_DBG(fip, "FIP descriptors "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) "received out of order\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) desc = (struct fip_desc *)((char *)desc + dlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) rlen -= dlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) if (!fh)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) els_op = *(u8 *)(fh + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) if ((els_dtype == FIP_DT_FLOGI || els_dtype == FIP_DT_FDISC) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) sub == FIP_SC_REP && fip->mode != FIP_MODE_VN2VN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) if (els_op == ELS_LS_ACC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) if (!is_valid_ether_addr(granted_mac)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) LIBFCOE_FIP_DBG(fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) "Invalid MAC address %pM in FIP ELS\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) granted_mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) memcpy(fr_cb(fp)->granted_mac, granted_mac, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) if (fip->flogi_oxid == ntohs(fh->fh_ox_id)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) fip->flogi_oxid = FC_XID_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) if (els_dtype == FIP_DT_FLOGI)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) fcoe_ctlr_announce(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) } else if (els_dtype == FIP_DT_FLOGI &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) !fcoe_ctlr_flogi_retry(fip))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) goto drop; /* retrying FLOGI so drop reject */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) if ((desc_cnt == 0) || ((els_op != ELS_LS_RJT) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) (!(1U << FIP_DT_MAC & desc_mask)))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) LIBFCOE_FIP_DBG(fip, "Missing critical descriptors "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) "in FIP ELS\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) * Convert skb into an fc_frame containing only the ELS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) skb_pull(skb, (u8 *)fh - skb->data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) skb_trim(skb, els_len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) fp = (struct fc_frame *)skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) fc_frame_init(fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) fr_sof(fp) = FC_SOF_I3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) fr_eof(fp) = FC_EOF_T;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) fr_dev(fp) = lport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) fr_encaps(fp) = els_dtype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) stats = per_cpu_ptr(lport->stats, get_cpu());
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) stats->RxFrames++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) stats->RxWords += skb->len / FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) put_cpu();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) fc_exch_recv(lport, fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) len_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) LIBFCOE_FIP_DBG(fip, "FIP length error in descriptor type %x len %zu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) desc->fip_dtype, dlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) drop:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) * fcoe_ctlr_recv_els() - Handle an incoming link reset frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) * @fip: The FCoE controller that received the frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) * @skb: The received FIP packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) * There may be multiple VN_Port descriptors.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) * The overall length has already been checked.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) struct fip_desc *desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) struct fip_mac_desc *mp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) struct fip_wwn_desc *wp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) struct fip_vn_desc *vp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) size_t rlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) size_t dlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) struct fcoe_fcf *fcf = fip->sel_fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) struct fc_lport *lport = fip->lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) struct fc_lport *vn_port = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) u32 desc_mask;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) int num_vlink_desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) int reset_phys_port = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) struct fip_vn_desc **vlink_desc_arr = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) struct fip_header *fh = (struct fip_header *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) struct ethhdr *eh = eth_hdr(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) LIBFCOE_FIP_DBG(fip, "Clear Virtual Link received\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) if (!fcf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) * We are yet to select best FCF, but we got CVL in the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) * meantime. reset the ctlr and let it rediscover the FCF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) LIBFCOE_FIP_DBG(fip, "Resetting fcoe_ctlr as FCF has not been "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) "selected yet\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) fcoe_ctlr_reset(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) * If we've selected an FCF check that the CVL is from there to avoid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) * processing CVLs from an unexpected source. If it is from an
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) * unexpected source drop it on the floor.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) if (!ether_addr_equal(eh->h_source, fcf->fcf_mac)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) LIBFCOE_FIP_DBG(fip, "Dropping CVL due to source address "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) "mismatch with FCF src=%pM\n", eh->h_source);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) * If we haven't logged into the fabric but receive a CVL we should
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) * reset everything and go back to solicitation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) if (!lport->port_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) LIBFCOE_FIP_DBG(fip, "lport not logged in, resoliciting\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) fcoe_ctlr_reset(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) fc_lport_reset(fip->lp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) fcoe_ctlr_solicit(fip, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) * mask of required descriptors. Validating each one clears its bit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) desc_mask = BIT(FIP_DT_MAC) | BIT(FIP_DT_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) rlen = ntohs(fh->fip_dl_len) * FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) desc = (struct fip_desc *)(fh + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) * Actually need to subtract 'sizeof(*mp) - sizeof(*wp)' from 'rlen'
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) * before determining max Vx_Port descriptor but a buggy FCF could have
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) * omitted either or both MAC Address and Name Identifier descriptors
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) num_vlink_desc = rlen / sizeof(*vp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) if (num_vlink_desc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) vlink_desc_arr = kmalloc_array(num_vlink_desc, sizeof(vp),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) if (!vlink_desc_arr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) num_vlink_desc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) while (rlen >= sizeof(*desc)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) dlen = desc->fip_dlen * FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) if (dlen > rlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) /* Drop CVL if there are duplicate critical descriptors */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) if ((desc->fip_dtype < 32) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) (desc->fip_dtype != FIP_DT_VN_ID) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) !(desc_mask & 1U << desc->fip_dtype)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) LIBFCOE_FIP_DBG(fip, "Duplicate Critical "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) "Descriptors in FIP CVL\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) switch (desc->fip_dtype) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) case FIP_DT_MAC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) mp = (struct fip_mac_desc *)desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) if (dlen < sizeof(*mp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) if (!ether_addr_equal(mp->fd_mac, fcf->fcf_mac))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) desc_mask &= ~BIT(FIP_DT_MAC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) case FIP_DT_NAME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) wp = (struct fip_wwn_desc *)desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) if (dlen < sizeof(*wp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) if (get_unaligned_be64(&wp->fd_wwn) != fcf->switch_name)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) desc_mask &= ~BIT(FIP_DT_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) case FIP_DT_VN_ID:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) vp = (struct fip_vn_desc *)desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) if (dlen < sizeof(*vp))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) vlink_desc_arr[num_vlink_desc++] = vp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) vn_port = fc_vport_id_lookup(lport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) ntoh24(vp->fd_fc_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) if (vn_port && (vn_port == lport)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) per_cpu_ptr(lport->stats,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) get_cpu())->VLinkFailureCount++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) put_cpu();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) fcoe_ctlr_reset(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) /* standard says ignore unknown descriptors >= 128 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) if (desc->fip_dtype < FIP_DT_NON_CRITICAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) goto err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) desc = (struct fip_desc *)((char *)desc + dlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) rlen -= dlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) * reset only if all required descriptors were present and valid.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) if (desc_mask)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) LIBFCOE_FIP_DBG(fip, "missing descriptors mask %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452) desc_mask);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) else if (!num_vlink_desc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) LIBFCOE_FIP_DBG(fip, "CVL: no Vx_Port descriptor found\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) * No Vx_Port description. Clear all NPIV ports,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) * followed by physical port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) per_cpu_ptr(lport->stats, get_cpu())->VLinkFailureCount++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) put_cpu();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) fcoe_ctlr_reset(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) mutex_lock(&lport->lp_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) list_for_each_entry(vn_port, &lport->vports, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) fc_lport_reset(vn_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) mutex_unlock(&lport->lp_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) fc_lport_reset(fip->lp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) fcoe_ctlr_solicit(fip, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) LIBFCOE_FIP_DBG(fip, "performing Clear Virtual Link\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) for (i = 0; i < num_vlink_desc; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) vp = vlink_desc_arr[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) vn_port = fc_vport_id_lookup(lport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) ntoh24(vp->fd_fc_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) if (!vn_port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) * 'port_id' is already validated, check MAC address and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) * wwpn
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) if (!ether_addr_equal(fip->get_src_addr(vn_port),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) vp->fd_mac) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) get_unaligned_be64(&vp->fd_wwpn) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) vn_port->wwpn)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) if (vn_port == lport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) * Physical port, defer processing till all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) * listed NPIV ports are cleared
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) reset_phys_port = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) else /* NPIV port */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) fc_lport_reset(vn_port);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) if (reset_phys_port) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) fc_lport_reset(fip->lp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) fcoe_ctlr_solicit(fip, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) kfree(vlink_desc_arr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) * fcoe_ctlr_recv() - Receive a FIP packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) * @fip: The FCoE controller that received the packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) * @skb: The received FIP packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) * This may be called from either NET_RX_SOFTIRQ or IRQ.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) void fcoe_ctlr_recv(struct fcoe_ctlr *fip, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) skb = skb_share_check(skb, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) skb_queue_tail(&fip->fip_recv_list, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) schedule_work(&fip->recv_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) EXPORT_SYMBOL(fcoe_ctlr_recv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531) * fcoe_ctlr_recv_handler() - Receive a FIP frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) * @fip: The FCoE controller that received the frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) * @skb: The received FIP frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) * Returns non-zero if the frame is dropped.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) static int fcoe_ctlr_recv_handler(struct fcoe_ctlr *fip, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) struct fip_header *fiph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) struct ethhdr *eh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) enum fip_state state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) bool fip_vlan_resp = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) u16 op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) u8 sub;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) if (skb_linearize(skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) if (skb->len < sizeof(*fiph))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) eh = eth_hdr(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) if (fip->mode == FIP_MODE_VN2VN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) if (!ether_addr_equal(eh->h_dest, fip->ctl_src_addr) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) !ether_addr_equal(eh->h_dest, fcoe_all_vn2vn) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) !ether_addr_equal(eh->h_dest, fcoe_all_p2p))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) } else if (!ether_addr_equal(eh->h_dest, fip->ctl_src_addr) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) !ether_addr_equal(eh->h_dest, fcoe_all_enode))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) fiph = (struct fip_header *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) op = ntohs(fiph->fip_op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) sub = fiph->fip_subcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) if (FIP_VER_DECAPS(fiph->fip_ver) != FIP_VER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) if (ntohs(fiph->fip_dl_len) * FIP_BPW + sizeof(*fiph) > skb->len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) state = fip->state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) if (state == FIP_ST_AUTO) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571) fip->map_dest = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) fcoe_ctlr_set_state(fip, FIP_ST_ENABLED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) state = FIP_ST_ENABLED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) LIBFCOE_FIP_DBG(fip, "Using FIP mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) fip_vlan_resp = fip->fip_resp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) if (fip->mode == FIP_MODE_VN2VN && op == FIP_OP_VN2VN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) return fcoe_ctlr_vn_recv(fip, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) if (fip_vlan_resp && op == FIP_OP_VLAN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) LIBFCOE_FIP_DBG(fip, "fip vlan discovery\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) return fcoe_ctlr_vlan_recv(fip, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) if (state != FIP_ST_ENABLED && state != FIP_ST_VNMP_UP &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) state != FIP_ST_VNMP_CLAIM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) if (op == FIP_OP_LS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) fcoe_ctlr_recv_els(fip, skb); /* consumes skb */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) if (state != FIP_ST_ENABLED)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) if (op == FIP_OP_DISC && sub == FIP_SC_ADV)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) fcoe_ctlr_recv_adv(fip, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) else if (op == FIP_OP_CTRL && sub == FIP_SC_CLR_VLINK)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) fcoe_ctlr_recv_clr_vlink(fip, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) drop:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) * fcoe_ctlr_select() - Select the best FCF (if possible)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) * Returns the selected FCF, or NULL if none are usable.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) * If there are conflicting advertisements, no FCF can be chosen.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) * If there is already a selected FCF, this will choose a better one or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) * an equivalent one that hasn't already been sent a FLOGI.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) * Called with lock held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) static struct fcoe_fcf *fcoe_ctlr_select(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) struct fcoe_fcf *fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) struct fcoe_fcf *best = fip->sel_fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) list_for_each_entry(fcf, &fip->fcfs, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) LIBFCOE_FIP_DBG(fip, "consider FCF fab %16.16llx "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) "VFID %d mac %pM map %x val %d "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) "sent %u pri %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) fcf->fabric_name, fcf->vfid, fcf->fcf_mac,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) fcf->fc_map, fcoe_ctlr_mtu_valid(fcf),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) fcf->flogi_sent, fcf->pri);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635) if (!fcoe_ctlr_fcf_usable(fcf)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) LIBFCOE_FIP_DBG(fip, "FCF for fab %16.16llx "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) "map %x %svalid %savailable\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) fcf->fabric_name, fcf->fc_map,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) (fcf->flags & FIP_FL_SOL) ? "" : "in",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) (fcf->flags & FIP_FL_AVAIL) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) "" : "un");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) if (!best || fcf->pri < best->pri || best->flogi_sent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) best = fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) if (fcf->fabric_name != best->fabric_name ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) fcf->vfid != best->vfid ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) fcf->fc_map != best->fc_map) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) LIBFCOE_FIP_DBG(fip, "Conflicting fabric, VFID, "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) "or FC-MAP\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) fip->sel_fcf = best;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) if (best) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) LIBFCOE_FIP_DBG(fip, "using FCF mac %pM\n", best->fcf_mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) fip->port_ka_time = jiffies +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) msecs_to_jiffies(FIP_VN_KA_PERIOD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) fip->ctlr_ka_time = jiffies + best->fka_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) if (time_before(fip->ctlr_ka_time, fip->timer.expires))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) mod_timer(&fip->timer, fip->ctlr_ka_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) return best;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) * fcoe_ctlr_flogi_send_locked() - send FIP-encapsulated FLOGI to current FCF
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) * Returns non-zero error if it could not be sent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) * Called with ctlr_mutex and ctlr_lock held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) * Caller must verify that fip->sel_fcf is not NULL.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) static int fcoe_ctlr_flogi_send_locked(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) struct sk_buff *skb_orig;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) struct fc_frame_header *fh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) skb_orig = fip->flogi_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) if (!skb_orig)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) * Clone and send the FLOGI request. If clone fails, use original.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) skb = skb_clone(skb_orig, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) if (!skb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) skb = skb_orig;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) fip->flogi_req = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) fh = (struct fc_frame_header *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) error = fcoe_ctlr_encaps(fip, fip->lp, FIP_DT_FLOGI, skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) ntoh24(fh->fh_d_id));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) if (error) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) fip->send(fip, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) fip->sel_fcf->flogi_sent = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) * fcoe_ctlr_flogi_retry() - resend FLOGI request to a new FCF if possible
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) * Returns non-zero error code if there's no FLOGI request to retry or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) * no alternate FCF available.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) static int fcoe_ctlr_flogi_retry(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) struct fcoe_fcf *fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) int error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) spin_lock_bh(&fip->ctlr_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720) LIBFCOE_FIP_DBG(fip, "re-sending FLOGI - reselect\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) fcf = fcoe_ctlr_select(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) if (!fcf || fcf->flogi_sent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) kfree_skb(fip->flogi_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) fip->flogi_req = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) error = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) fcoe_ctlr_solicit(fip, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) error = fcoe_ctlr_flogi_send_locked(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) spin_unlock_bh(&fip->ctlr_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) return error;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) * fcoe_ctlr_flogi_send() - Handle sending of FIP FLOGI.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) * @fip: The FCoE controller that timed out
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) * Done here because fcoe_ctlr_els_send() can't get mutex.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) * Called with ctlr_mutex held. The caller must not hold ctlr_lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) static void fcoe_ctlr_flogi_send(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) struct fcoe_fcf *fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) spin_lock_bh(&fip->ctlr_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) fcf = fip->sel_fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) if (!fcf || !fip->flogi_req_send)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) LIBFCOE_FIP_DBG(fip, "sending FLOGI\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) * If this FLOGI is being sent due to a timeout retry
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) * to the same FCF as before, select a different FCF if possible.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) if (fcf->flogi_sent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) LIBFCOE_FIP_DBG(fip, "sending FLOGI - reselect\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) fcf = fcoe_ctlr_select(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) if (!fcf || fcf->flogi_sent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) LIBFCOE_FIP_DBG(fip, "sending FLOGI - clearing\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) list_for_each_entry(fcf, &fip->fcfs, list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) fcf->flogi_sent = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) fcf = fcoe_ctlr_select(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) if (fcf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) fcoe_ctlr_flogi_send_locked(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) fip->flogi_req_send = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) } else /* XXX */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) LIBFCOE_FIP_DBG(fip, "No FCF selected - defer send\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) spin_unlock_bh(&fip->ctlr_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) * fcoe_ctlr_timeout() - FIP timeout handler
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) * @t: Timer context use to obtain the controller reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) static void fcoe_ctlr_timeout(struct timer_list *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) struct fcoe_ctlr *fip = from_timer(fip, t, timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) schedule_work(&fip->timer_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790) * fcoe_ctlr_timer_work() - Worker thread function for timer work
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) * @work: Handle to a FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) * Ages FCFs. Triggers FCF selection if possible.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) * Sends keep-alives and resets.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) static void fcoe_ctlr_timer_work(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) struct fcoe_ctlr *fip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) struct fc_lport *vport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) u8 *mac;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) u8 reset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802) u8 send_ctlr_ka = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) u8 send_port_ka = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) struct fcoe_fcf *sel;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) struct fcoe_fcf *fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) unsigned long next_timer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) fip = container_of(work, struct fcoe_ctlr, timer_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) if (fip->mode == FIP_MODE_VN2VN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810) return fcoe_ctlr_vn_timeout(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812) if (fip->state == FIP_ST_DISABLED) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) fcf = fip->sel_fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818) next_timer = fcoe_ctlr_age_fcfs(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) sel = fip->sel_fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) if (!sel && fip->sel_time) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822) if (time_after_eq(jiffies, fip->sel_time)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) sel = fcoe_ctlr_select(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824) fip->sel_time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) } else if (time_after(next_timer, fip->sel_time))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) next_timer = fip->sel_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829) if (sel && fip->flogi_req_send)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) fcoe_ctlr_flogi_send(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831) else if (!sel && fcf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) reset = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) if (sel && !sel->fd_flags) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) if (time_after_eq(jiffies, fip->ctlr_ka_time)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) fip->ctlr_ka_time = jiffies + sel->fka_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) send_ctlr_ka = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839) if (time_after(next_timer, fip->ctlr_ka_time))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) next_timer = fip->ctlr_ka_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) if (time_after_eq(jiffies, fip->port_ka_time)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) fip->port_ka_time = jiffies +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) msecs_to_jiffies(FIP_VN_KA_PERIOD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) send_port_ka = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) if (time_after(next_timer, fip->port_ka_time))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) next_timer = fip->port_ka_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) if (!list_empty(&fip->fcfs))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) mod_timer(&fip->timer, next_timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) if (reset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) fc_lport_reset(fip->lp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) /* restart things with a solicitation */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857) fcoe_ctlr_solicit(fip, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) if (send_ctlr_ka)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861) fcoe_ctlr_send_keep_alive(fip, NULL, 0, fip->ctl_src_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863) if (send_port_ka) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) mutex_lock(&fip->lp->lp_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) mac = fip->get_src_addr(fip->lp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) fcoe_ctlr_send_keep_alive(fip, fip->lp, 1, mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) list_for_each_entry(vport, &fip->lp->vports, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) mac = fip->get_src_addr(vport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869) fcoe_ctlr_send_keep_alive(fip, vport, 1, mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) mutex_unlock(&fip->lp->lp_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876) * fcoe_ctlr_recv_work() - Worker thread function for receiving FIP frames
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877) * @recv_work: Handle to a FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) static void fcoe_ctlr_recv_work(struct work_struct *recv_work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) struct fcoe_ctlr *fip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) fip = container_of(recv_work, struct fcoe_ctlr, recv_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) while ((skb = skb_dequeue(&fip->fip_recv_list)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) fcoe_ctlr_recv_handler(fip, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890) * fcoe_ctlr_recv_flogi() - Snoop pre-FIP receipt of FLOGI response
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892) * @lport: The local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) * @fp: The FC frame to snoop
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) * Snoop potential response to FLOGI or even incoming FLOGI.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) * The caller has checked that we are waiting for login as indicated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) * by fip->flogi_oxid != FC_XID_UNKNOWN.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900) * The caller is responsible for freeing the frame.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901) * Fill in the granted_mac address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) * Return non-zero if the frame should not be delivered to libfc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *fip, struct fc_lport *lport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) struct fc_frame *fp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908) struct fc_frame_header *fh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909) u8 op;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) u8 *sa;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) sa = eth_hdr(&fp->skb)->h_source;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) fh = fc_frame_header_get(fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) if (fh->fh_type != FC_TYPE_ELS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) op = fc_frame_payload_op(fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) if (op == ELS_LS_ACC && fh->fh_r_ctl == FC_RCTL_ELS_REP &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) fip->flogi_oxid == ntohs(fh->fh_ox_id)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) if (fip->state != FIP_ST_AUTO && fip->state != FIP_ST_NON_FIP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) fcoe_ctlr_set_state(fip, FIP_ST_NON_FIP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) LIBFCOE_FIP_DBG(fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928) "received FLOGI LS_ACC using non-FIP mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931) * FLOGI accepted.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) * If the src mac addr is FC_OUI-based, then we mark the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933) * address_mode flag to use FC_OUI-based Ethernet DA.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) * Otherwise we use the FCoE gateway addr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) if (ether_addr_equal(sa, (u8[6])FC_FCOE_FLOGI_MAC)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937) fcoe_ctlr_map_dest(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939) memcpy(fip->dest_addr, sa, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) fip->map_dest = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) fip->flogi_oxid = FC_XID_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) fc_fcoe_set_mac(fr_cb(fp)->granted_mac, fh->fh_d_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) } else if (op == ELS_FLOGI && fh->fh_r_ctl == FC_RCTL_ELS_REQ && sa) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) * Save source MAC for point-to-point responses.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) if (fip->state == FIP_ST_AUTO || fip->state == FIP_ST_NON_FIP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951) memcpy(fip->dest_addr, sa, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) fip->map_dest = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) if (fip->state == FIP_ST_AUTO)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) LIBFCOE_FIP_DBG(fip, "received non-FIP FLOGI. "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) "Setting non-FIP mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956) fcoe_ctlr_set_state(fip, FIP_ST_NON_FIP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962) EXPORT_SYMBOL(fcoe_ctlr_recv_flogi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965) * fcoe_wwn_from_mac() - Converts a 48-bit IEEE MAC address to a 64-bit FC WWN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966) * @mac: The MAC address to convert
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967) * @scheme: The scheme to use when converting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968) * @port: The port indicator for converting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970) * Returns: u64 fc world wide name
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972) u64 fcoe_wwn_from_mac(unsigned char mac[MAX_ADDR_LEN],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973) unsigned int scheme, unsigned int port)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) u64 wwn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) u64 host_mac;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978) /* The MAC is in NO, so flip only the low 48 bits */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979) host_mac = ((u64) mac[0] << 40) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) ((u64) mac[1] << 32) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) ((u64) mac[2] << 24) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982) ((u64) mac[3] << 16) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983) ((u64) mac[4] << 8) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) (u64) mac[5];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986) WARN_ON(host_mac >= (1ULL << 48));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) wwn = host_mac | ((u64) scheme << 60);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988) switch (scheme) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990) WARN_ON(port != 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) case 2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993) WARN_ON(port >= 0xfff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) wwn |= (u64) port << 48;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997) WARN_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001) return wwn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003) EXPORT_SYMBOL_GPL(fcoe_wwn_from_mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006) * fcoe_ctlr_rport() - return the fcoe_rport for a given fc_rport_priv
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007) * @rdata: libfc remote port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009) static inline struct fcoe_rport *fcoe_ctlr_rport(struct fc_rport_priv *rdata)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) return container_of(rdata, struct fcoe_rport, rdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015) * fcoe_ctlr_vn_send() - Send a FIP VN2VN Probe Request or Reply.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017) * @sub: sub-opcode for probe request, reply, or advertisement.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018) * @dest: The destination Ethernet MAC address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) * @min_len: minimum size of the Ethernet payload to be sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021) static void fcoe_ctlr_vn_send(struct fcoe_ctlr *fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) enum fip_vn2vn_subcode sub,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023) const u8 *dest, size_t min_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026) struct fip_vn2vn_probe_frame {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) struct ethhdr eth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) struct fip_header fip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029) struct fip_mac_desc mac;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030) struct fip_wwn_desc wwnn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031) struct fip_vn_desc vn;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032) } __packed * frame;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033) struct fip_fc4_feat *ff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034) struct fip_size_desc *size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035) u32 fcp_feat;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036) size_t len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037) size_t dlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039) len = sizeof(*frame);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040) dlen = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041) if (sub == FIP_SC_VN_CLAIM_NOTIFY || sub == FIP_SC_VN_CLAIM_REP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042) dlen = sizeof(struct fip_fc4_feat) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) sizeof(struct fip_size_desc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044) len += dlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) dlen += sizeof(frame->mac) + sizeof(frame->wwnn) + sizeof(frame->vn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) len = max(len, min_len + sizeof(struct ethhdr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049) skb = dev_alloc_skb(len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053) frame = (struct fip_vn2vn_probe_frame *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) memset(frame, 0, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055) memcpy(frame->eth.h_dest, dest, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) if (sub == FIP_SC_VN_BEACON) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058) hton24(frame->eth.h_source, FIP_VN_FC_MAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059) hton24(frame->eth.h_source + 3, fip->port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) memcpy(frame->eth.h_source, fip->ctl_src_addr, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063) frame->eth.h_proto = htons(ETH_P_FIP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) frame->fip.fip_ver = FIP_VER_ENCAPS(FIP_VER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066) frame->fip.fip_op = htons(FIP_OP_VN2VN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) frame->fip.fip_subcode = sub;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068) frame->fip.fip_dl_len = htons(dlen / FIP_BPW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070) frame->mac.fd_desc.fip_dtype = FIP_DT_MAC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071) frame->mac.fd_desc.fip_dlen = sizeof(frame->mac) / FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072) memcpy(frame->mac.fd_mac, fip->ctl_src_addr, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074) frame->wwnn.fd_desc.fip_dtype = FIP_DT_NAME;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) frame->wwnn.fd_desc.fip_dlen = sizeof(frame->wwnn) / FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) put_unaligned_be64(fip->lp->wwnn, &frame->wwnn.fd_wwn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078) frame->vn.fd_desc.fip_dtype = FIP_DT_VN_ID;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079) frame->vn.fd_desc.fip_dlen = sizeof(frame->vn) / FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) hton24(frame->vn.fd_mac, FIP_VN_FC_MAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081) hton24(frame->vn.fd_mac + 3, fip->port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082) hton24(frame->vn.fd_fc_id, fip->port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083) put_unaligned_be64(fip->lp->wwpn, &frame->vn.fd_wwpn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086) * For claims, add FC-4 features.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087) * TBD: Add interface to get fc-4 types and features from libfc.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089) if (sub == FIP_SC_VN_CLAIM_NOTIFY || sub == FIP_SC_VN_CLAIM_REP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) ff = (struct fip_fc4_feat *)(frame + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091) ff->fd_desc.fip_dtype = FIP_DT_FC4F;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092) ff->fd_desc.fip_dlen = sizeof(*ff) / FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) ff->fd_fts = fip->lp->fcts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095) fcp_feat = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096) if (fip->lp->service_params & FCP_SPPF_INIT_FCN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097) fcp_feat |= FCP_FEAT_INIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098) if (fip->lp->service_params & FCP_SPPF_TARG_FCN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099) fcp_feat |= FCP_FEAT_TARG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100) fcp_feat <<= (FC_TYPE_FCP * 4) % 32;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101) ff->fd_ff.fd_feat[FC_TYPE_FCP * 4 / 32] = htonl(fcp_feat);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103) size = (struct fip_size_desc *)(ff + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104) size->fd_desc.fip_dtype = FIP_DT_FCOE_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105) size->fd_desc.fip_dlen = sizeof(*size) / FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106) size->fd_size = htons(fcoe_ctlr_fcoe_size(fip));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109) skb_put(skb, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110) skb->protocol = htons(ETH_P_FIP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111) skb->priority = fip->priority;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112) skb_reset_mac_header(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113) skb_reset_network_header(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2115) fip->send(fip, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2116) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2117)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2118) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2119) * fcoe_ctlr_vn_rport_callback - Event handler for rport events.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2120) * @lport: The lport which is receiving the event
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2121) * @rdata: remote port private data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2122) * @event: The event that occurred
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2123) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2124) * Locking Note: The rport lock must not be held when calling this function.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2125) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2126) static void fcoe_ctlr_vn_rport_callback(struct fc_lport *lport,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2127) struct fc_rport_priv *rdata,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2128) enum fc_rport_event event)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2129) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2130) struct fcoe_ctlr *fip = lport->disc.priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2131) struct fcoe_rport *frport = fcoe_ctlr_rport(rdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2133) LIBFCOE_FIP_DBG(fip, "vn_rport_callback %x event %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2134) rdata->ids.port_id, event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2135)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2136) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2137) switch (event) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2138) case RPORT_EV_READY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2139) frport->login_count = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2140) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2141) case RPORT_EV_LOGO:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2142) case RPORT_EV_FAILED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2143) case RPORT_EV_STOP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2144) frport->login_count++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2145) if (frport->login_count > FCOE_CTLR_VN2VN_LOGIN_LIMIT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2146) LIBFCOE_FIP_DBG(fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2147) "rport FLOGI limited port_id %6.6x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2148) rdata->ids.port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2149) fc_rport_logoff(rdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2150) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2151) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2152) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2153) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2155) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2158) static struct fc_rport_operations fcoe_ctlr_vn_rport_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2159) .event_callback = fcoe_ctlr_vn_rport_callback,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2160) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2162) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2163) * fcoe_ctlr_disc_stop_locked() - stop discovery in VN2VN mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2164) * @lport: The local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2165) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2166) * Called with ctlr_mutex held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2167) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2168) static void fcoe_ctlr_disc_stop_locked(struct fc_lport *lport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2169) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2170) struct fc_rport_priv *rdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2172) mutex_lock(&lport->disc.disc_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2173) list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2174) if (kref_get_unless_zero(&rdata->kref)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2175) fc_rport_logoff(rdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2176) kref_put(&rdata->kref, fc_rport_destroy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2177) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2179) lport->disc.disc_callback = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2180) mutex_unlock(&lport->disc.disc_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2183) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2184) * fcoe_ctlr_disc_stop() - stop discovery in VN2VN mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2185) * @lport: The local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2186) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2187) * Called through the local port template for discovery.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2188) * Called without the ctlr_mutex held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2189) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2190) static void fcoe_ctlr_disc_stop(struct fc_lport *lport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2191) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2192) struct fcoe_ctlr *fip = lport->disc.priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2194) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2195) fcoe_ctlr_disc_stop_locked(lport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2196) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2199) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2200) * fcoe_ctlr_disc_stop_final() - stop discovery for shutdown in VN2VN mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2201) * @lport: The local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2202) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2203) * Called through the local port template for discovery.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2204) * Called without the ctlr_mutex held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2205) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2206) static void fcoe_ctlr_disc_stop_final(struct fc_lport *lport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2207) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2208) fcoe_ctlr_disc_stop(lport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2209) fc_rport_flush_queue();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2210) synchronize_rcu();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2211) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2213) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2214) * fcoe_ctlr_vn_restart() - VN2VN probe restart with new port_id
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2215) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2216) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2217) * Called with fcoe_ctlr lock held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2218) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2219) static void fcoe_ctlr_vn_restart(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2221) unsigned long wait;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2222) u32 port_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2224) fcoe_ctlr_disc_stop_locked(fip->lp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2226) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2227) * Get proposed port ID.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2228) * If this is the first try after link up, use any previous port_id.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2229) * If there was none, use the low bits of the port_name.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2230) * On subsequent tries, get the next random one.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2231) * Don't use reserved IDs, use another non-zero value, just as random.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2232) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2233) port_id = fip->port_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2234) if (fip->probe_tries)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2235) port_id = prandom_u32_state(&fip->rnd_state) & 0xffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2236) else if (!port_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2237) port_id = fip->lp->wwpn & 0xffff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2238) if (!port_id || port_id == 0xffff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2239) port_id = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2240) fip->port_id = port_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2242) if (fip->probe_tries < FIP_VN_RLIM_COUNT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2243) fip->probe_tries++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2244) wait = prandom_u32() % FIP_VN_PROBE_WAIT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2245) } else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2246) wait = FIP_VN_RLIM_INT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2247) mod_timer(&fip->timer, jiffies + msecs_to_jiffies(wait));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2248) fcoe_ctlr_set_state(fip, FIP_ST_VNMP_START);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2251) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2252) * fcoe_ctlr_vn_start() - Start in VN2VN mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2253) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2254) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2255) * Called with fcoe_ctlr lock held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2256) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2257) static void fcoe_ctlr_vn_start(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2258) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2259) fip->probe_tries = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2260) prandom_seed_state(&fip->rnd_state, fip->lp->wwpn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2261) fcoe_ctlr_vn_restart(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2262) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2264) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2265) * fcoe_ctlr_vn_parse - parse probe request or response
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2266) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2267) * @skb: incoming packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2268) * @frport: parsed FCoE rport from the probe request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2269) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2270) * Returns non-zero error number on error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2271) * Does not consume the packet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2272) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2273) static int fcoe_ctlr_vn_parse(struct fcoe_ctlr *fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2274) struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2275) struct fcoe_rport *frport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2276) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2277) struct fip_header *fiph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2278) struct fip_desc *desc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2279) struct fip_mac_desc *macd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2280) struct fip_wwn_desc *wwn = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2281) struct fip_vn_desc *vn = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2282) struct fip_size_desc *size = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2283) size_t rlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2284) size_t dlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2285) u32 desc_mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2286) u32 dtype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2287) u8 sub;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2288)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2289) fiph = (struct fip_header *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2290) frport->flags = ntohs(fiph->fip_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2291)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2292) sub = fiph->fip_subcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2293) switch (sub) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2294) case FIP_SC_VN_PROBE_REQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2295) case FIP_SC_VN_PROBE_REP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2296) case FIP_SC_VN_BEACON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2297) desc_mask = BIT(FIP_DT_MAC) | BIT(FIP_DT_NAME) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2298) BIT(FIP_DT_VN_ID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2299) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2300) case FIP_SC_VN_CLAIM_NOTIFY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2301) case FIP_SC_VN_CLAIM_REP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2302) desc_mask = BIT(FIP_DT_MAC) | BIT(FIP_DT_NAME) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2303) BIT(FIP_DT_VN_ID) | BIT(FIP_DT_FC4F) |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2304) BIT(FIP_DT_FCOE_SIZE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2305) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2306) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2307) LIBFCOE_FIP_DBG(fip, "vn_parse unknown subcode %u\n", sub);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2308) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2309) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2311) rlen = ntohs(fiph->fip_dl_len) * 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2312) if (rlen + sizeof(*fiph) > skb->len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2313) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2315) desc = (struct fip_desc *)(fiph + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2316) while (rlen > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2317) dlen = desc->fip_dlen * FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2318) if (dlen < sizeof(*desc) || dlen > rlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2319) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2320)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2321) dtype = desc->fip_dtype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2322) if (dtype < 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2323) if (!(desc_mask & BIT(dtype))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2324) LIBFCOE_FIP_DBG(fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2325) "unexpected or duplicated desc "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2326) "desc type %u in "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2327) "FIP VN2VN subtype %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2328) dtype, sub);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2329) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2330) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2331) desc_mask &= ~BIT(dtype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2334) switch (dtype) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2335) case FIP_DT_MAC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2336) if (dlen != sizeof(struct fip_mac_desc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2337) goto len_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2338) macd = (struct fip_mac_desc *)desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2339) if (!is_valid_ether_addr(macd->fd_mac)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2340) LIBFCOE_FIP_DBG(fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2341) "Invalid MAC addr %pM in FIP VN2VN\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2342) macd->fd_mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2343) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2344) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2345) memcpy(frport->enode_mac, macd->fd_mac, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2346) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2347) case FIP_DT_NAME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2348) if (dlen != sizeof(struct fip_wwn_desc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2349) goto len_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2350) wwn = (struct fip_wwn_desc *)desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2351) frport->rdata.ids.node_name =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2352) get_unaligned_be64(&wwn->fd_wwn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2353) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2354) case FIP_DT_VN_ID:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2355) if (dlen != sizeof(struct fip_vn_desc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2356) goto len_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2357) vn = (struct fip_vn_desc *)desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2358) memcpy(frport->vn_mac, vn->fd_mac, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2359) frport->rdata.ids.port_id = ntoh24(vn->fd_fc_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2360) frport->rdata.ids.port_name =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2361) get_unaligned_be64(&vn->fd_wwpn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2362) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2363) case FIP_DT_FC4F:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2364) if (dlen != sizeof(struct fip_fc4_feat))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2365) goto len_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2366) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2367) case FIP_DT_FCOE_SIZE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2368) if (dlen != sizeof(struct fip_size_desc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2369) goto len_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2370) size = (struct fip_size_desc *)desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2371) frport->fcoe_len = ntohs(size->fd_size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2372) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2373) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2374) LIBFCOE_FIP_DBG(fip, "unexpected descriptor type %x "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2375) "in FIP probe\n", dtype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2376) /* standard says ignore unknown descriptors >= 128 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2377) if (dtype < FIP_DT_NON_CRITICAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2378) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2379) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2380) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2381) desc = (struct fip_desc *)((char *)desc + dlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2382) rlen -= dlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2383) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2384) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2385)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2386) len_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2387) LIBFCOE_FIP_DBG(fip, "FIP length error in descriptor type %x len %zu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2388) dtype, dlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2389) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2390) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2392) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2393) * fcoe_ctlr_vn_send_claim() - send multicast FIP VN2VN Claim Notification.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2394) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2395) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2396) * Called with ctlr_mutex held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2397) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2398) static void fcoe_ctlr_vn_send_claim(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2399) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2400) fcoe_ctlr_vn_send(fip, FIP_SC_VN_CLAIM_NOTIFY, fcoe_all_vn2vn, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2401) fip->sol_time = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2402) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2404) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2405) * fcoe_ctlr_vn_probe_req() - handle incoming VN2VN probe request.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2406) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2407) * @frport: parsed FCoE rport from the probe request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2408) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2409) * Called with ctlr_mutex held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2410) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2411) static void fcoe_ctlr_vn_probe_req(struct fcoe_ctlr *fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2412) struct fcoe_rport *frport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2413) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2414) if (frport->rdata.ids.port_id != fip->port_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2415) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2417) switch (fip->state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2418) case FIP_ST_VNMP_CLAIM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2419) case FIP_ST_VNMP_UP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2420) LIBFCOE_FIP_DBG(fip, "vn_probe_req: send reply, state %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2421) fip->state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2422) fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2423) frport->enode_mac, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2424) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2425) case FIP_ST_VNMP_PROBE1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2426) case FIP_ST_VNMP_PROBE2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2427) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2428) * Decide whether to reply to the Probe.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2429) * Our selected address is never a "recorded" one, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2430) * only reply if our WWPN is greater and the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2431) * Probe's REC bit is not set.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2432) * If we don't reply, we will change our address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2433) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2434) if (fip->lp->wwpn > frport->rdata.ids.port_name &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2435) !(frport->flags & FIP_FL_REC_OR_P2P)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2436) LIBFCOE_FIP_DBG(fip, "vn_probe_req: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2437) "port_id collision\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2438) fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REP,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2439) frport->enode_mac, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2440) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2442) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2443) case FIP_ST_VNMP_START:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2444) LIBFCOE_FIP_DBG(fip, "vn_probe_req: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2445) "restart VN2VN negotiation\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2446) fcoe_ctlr_vn_restart(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2447) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2448) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2449) LIBFCOE_FIP_DBG(fip, "vn_probe_req: ignore state %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2450) fip->state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2451) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2452) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2454)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2455) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2456) * fcoe_ctlr_vn_probe_reply() - handle incoming VN2VN probe reply.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2457) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2458) * @frport: parsed FCoE rport from the probe request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2459) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2460) * Called with ctlr_mutex held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2461) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2462) static void fcoe_ctlr_vn_probe_reply(struct fcoe_ctlr *fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2463) struct fcoe_rport *frport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2464) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2465) if (frport->rdata.ids.port_id != fip->port_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2466) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2467) switch (fip->state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2468) case FIP_ST_VNMP_START:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2469) case FIP_ST_VNMP_PROBE1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2470) case FIP_ST_VNMP_PROBE2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2471) case FIP_ST_VNMP_CLAIM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2472) LIBFCOE_FIP_DBG(fip, "vn_probe_reply: restart state %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2473) fip->state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2474) fcoe_ctlr_vn_restart(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2475) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2476) case FIP_ST_VNMP_UP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2477) LIBFCOE_FIP_DBG(fip, "vn_probe_reply: send claim notify\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2478) fcoe_ctlr_vn_send_claim(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2479) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2480) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2481) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2482) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2483) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2485) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2486) * fcoe_ctlr_vn_add() - Add a VN2VN entry to the list, based on a claim reply.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2487) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2488) * @new: newly-parsed FCoE rport as a template for new rdata
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2489) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2490) * Called with ctlr_mutex held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2491) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2492) static void fcoe_ctlr_vn_add(struct fcoe_ctlr *fip, struct fcoe_rport *new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2493) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2494) struct fc_lport *lport = fip->lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2495) struct fc_rport_priv *rdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2496) struct fc_rport_identifiers *ids;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2497) struct fcoe_rport *frport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2498) u32 port_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2500) port_id = new->rdata.ids.port_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2501) if (port_id == fip->port_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2502) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2504) mutex_lock(&lport->disc.disc_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2505) rdata = fc_rport_create(lport, port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2506) if (!rdata) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2507) mutex_unlock(&lport->disc.disc_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2508) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2509) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2510) mutex_lock(&rdata->rp_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2511) mutex_unlock(&lport->disc.disc_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2512)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2513) rdata->ops = &fcoe_ctlr_vn_rport_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2514) rdata->disc_id = lport->disc.disc_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2515)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2516) ids = &rdata->ids;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2517) if ((ids->port_name != -1 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2518) ids->port_name != new->rdata.ids.port_name) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2519) (ids->node_name != -1 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2520) ids->node_name != new->rdata.ids.node_name)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2521) mutex_unlock(&rdata->rp_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2522) LIBFCOE_FIP_DBG(fip, "vn_add rport logoff %6.6x\n", port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2523) fc_rport_logoff(rdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2524) mutex_lock(&rdata->rp_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2525) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2526) ids->port_name = new->rdata.ids.port_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2527) ids->node_name = new->rdata.ids.node_name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2528) mutex_unlock(&rdata->rp_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2529)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2530) frport = fcoe_ctlr_rport(rdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2531) LIBFCOE_FIP_DBG(fip, "vn_add rport %6.6x %s state %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2532) port_id, frport->fcoe_len ? "old" : "new",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2533) rdata->rp_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2534) frport->fcoe_len = new->fcoe_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2535) frport->flags = new->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2536) frport->login_count = new->login_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2537) memcpy(frport->enode_mac, new->enode_mac, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2538) memcpy(frport->vn_mac, new->vn_mac, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2539) frport->time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2540) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2542) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2543) * fcoe_ctlr_vn_lookup() - Find VN remote port's MAC address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2544) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2545) * @port_id: The port_id of the remote VN_node
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2546) * @mac: buffer which will hold the VN_NODE destination MAC address, if found.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2547) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2548) * Returns non-zero error if no remote port found.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2549) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2550) static int fcoe_ctlr_vn_lookup(struct fcoe_ctlr *fip, u32 port_id, u8 *mac)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2551) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2552) struct fc_lport *lport = fip->lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2553) struct fc_rport_priv *rdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2554) struct fcoe_rport *frport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2555) int ret = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2557) rdata = fc_rport_lookup(lport, port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2558) if (rdata) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2559) frport = fcoe_ctlr_rport(rdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2560) memcpy(mac, frport->enode_mac, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2561) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2562) kref_put(&rdata->kref, fc_rport_destroy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2563) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2564) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2565) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2567) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2568) * fcoe_ctlr_vn_claim_notify() - handle received FIP VN2VN Claim Notification
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2569) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2570) * @new: newly-parsed FCoE rport as a template for new rdata
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2571) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2572) * Called with ctlr_mutex held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2573) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2574) static void fcoe_ctlr_vn_claim_notify(struct fcoe_ctlr *fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2575) struct fcoe_rport *new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2576) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2577) if (new->flags & FIP_FL_REC_OR_P2P) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2578) LIBFCOE_FIP_DBG(fip, "send probe req for P2P/REC\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2579) fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REQ, fcoe_all_vn2vn, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2580) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2581) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2582) switch (fip->state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2583) case FIP_ST_VNMP_START:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2584) case FIP_ST_VNMP_PROBE1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2585) case FIP_ST_VNMP_PROBE2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2586) if (new->rdata.ids.port_id == fip->port_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2587) LIBFCOE_FIP_DBG(fip, "vn_claim_notify: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2588) "restart, state %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2589) fip->state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2590) fcoe_ctlr_vn_restart(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2591) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2592) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2593) case FIP_ST_VNMP_CLAIM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2594) case FIP_ST_VNMP_UP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2595) if (new->rdata.ids.port_id == fip->port_id) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2596) if (new->rdata.ids.port_name > fip->lp->wwpn) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2597) LIBFCOE_FIP_DBG(fip, "vn_claim_notify: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2598) "restart, port_id collision\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2599) fcoe_ctlr_vn_restart(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2600) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2601) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2602) LIBFCOE_FIP_DBG(fip, "vn_claim_notify: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2603) "send claim notify\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2604) fcoe_ctlr_vn_send_claim(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2605) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2606) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2607) LIBFCOE_FIP_DBG(fip, "vn_claim_notify: send reply to %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2608) new->rdata.ids.port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2609) fcoe_ctlr_vn_send(fip, FIP_SC_VN_CLAIM_REP, new->enode_mac,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2610) min((u32)new->fcoe_len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2611) fcoe_ctlr_fcoe_size(fip)));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2612) fcoe_ctlr_vn_add(fip, new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2613) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2614) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2615) LIBFCOE_FIP_DBG(fip, "vn_claim_notify: "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2616) "ignoring claim from %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2617) new->rdata.ids.port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2618) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2619) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2620) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2621)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2622) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2623) * fcoe_ctlr_vn_claim_resp() - handle received Claim Response
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2624) * @fip: The FCoE controller that received the frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2625) * @new: newly-parsed FCoE rport from the Claim Response
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2626) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2627) * Called with ctlr_mutex held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2628) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2629) static void fcoe_ctlr_vn_claim_resp(struct fcoe_ctlr *fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2630) struct fcoe_rport *new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2631) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2632) LIBFCOE_FIP_DBG(fip, "claim resp from from rport %x - state %s\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2633) new->rdata.ids.port_id, fcoe_ctlr_state(fip->state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2634) if (fip->state == FIP_ST_VNMP_UP || fip->state == FIP_ST_VNMP_CLAIM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2635) fcoe_ctlr_vn_add(fip, new);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2636) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2638) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2639) * fcoe_ctlr_vn_beacon() - handle received beacon.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2640) * @fip: The FCoE controller that received the frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2641) * @new: newly-parsed FCoE rport from the Beacon
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2642) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2643) * Called with ctlr_mutex held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2644) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2645) static void fcoe_ctlr_vn_beacon(struct fcoe_ctlr *fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2646) struct fcoe_rport *new)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2647) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2648) struct fc_lport *lport = fip->lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2649) struct fc_rport_priv *rdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2650) struct fcoe_rport *frport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2651)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2652) if (new->flags & FIP_FL_REC_OR_P2P) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2653) LIBFCOE_FIP_DBG(fip, "p2p beacon while in vn2vn mode\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2654) fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REQ, fcoe_all_vn2vn, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2655) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2656) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2657) rdata = fc_rport_lookup(lport, new->rdata.ids.port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2658) if (rdata) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2659) if (rdata->ids.node_name == new->rdata.ids.node_name &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2660) rdata->ids.port_name == new->rdata.ids.port_name) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2661) frport = fcoe_ctlr_rport(rdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2662)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2663) LIBFCOE_FIP_DBG(fip, "beacon from rport %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2664) rdata->ids.port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2665) if (!frport->time && fip->state == FIP_ST_VNMP_UP) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2666) LIBFCOE_FIP_DBG(fip, "beacon expired "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2667) "for rport %x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2668) rdata->ids.port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2669) fc_rport_login(rdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2670) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2671) frport->time = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2672) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2673) kref_put(&rdata->kref, fc_rport_destroy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2674) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2675) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2676) if (fip->state != FIP_ST_VNMP_UP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2677) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2679) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2680) * Beacon from a new neighbor.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2681) * Send a claim notify if one hasn't been sent recently.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2682) * Don't add the neighbor yet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2683) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2684) LIBFCOE_FIP_DBG(fip, "beacon from new rport %x. sending claim notify\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2685) new->rdata.ids.port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2686) if (time_after(jiffies,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2687) fip->sol_time + msecs_to_jiffies(FIP_VN_ANN_WAIT)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2688) fcoe_ctlr_vn_send_claim(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2689) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2691) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2692) * fcoe_ctlr_vn_age() - Check for VN_ports without recent beacons
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2693) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2694) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2695) * Called with ctlr_mutex held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2696) * Called only in state FIP_ST_VNMP_UP.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2697) * Returns the soonest time for next age-out or a time far in the future.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2698) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2699) static unsigned long fcoe_ctlr_vn_age(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2700) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2701) struct fc_lport *lport = fip->lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2702) struct fc_rport_priv *rdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2703) struct fcoe_rport *frport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2704) unsigned long next_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2705) unsigned long deadline;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2706)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2707) next_time = jiffies + msecs_to_jiffies(FIP_VN_BEACON_INT * 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2708) mutex_lock(&lport->disc.disc_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2709) list_for_each_entry_rcu(rdata, &lport->disc.rports, peers) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2710) if (!kref_get_unless_zero(&rdata->kref))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2711) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2712) frport = fcoe_ctlr_rport(rdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2713) if (!frport->time) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2714) kref_put(&rdata->kref, fc_rport_destroy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2715) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2716) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2717) deadline = frport->time +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2718) msecs_to_jiffies(FIP_VN_BEACON_INT * 25 / 10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2719) if (time_after_eq(jiffies, deadline)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2720) frport->time = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2721) LIBFCOE_FIP_DBG(fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2722) "port %16.16llx fc_id %6.6x beacon expired\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2723) rdata->ids.port_name, rdata->ids.port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2724) fc_rport_logoff(rdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2725) } else if (time_before(deadline, next_time))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2726) next_time = deadline;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2727) kref_put(&rdata->kref, fc_rport_destroy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2728) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2729) mutex_unlock(&lport->disc.disc_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2730) return next_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2731) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2732)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2733) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2734) * fcoe_ctlr_vn_recv() - Receive a FIP frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2735) * @fip: The FCoE controller that received the frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2736) * @skb: The received FIP frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2737) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2738) * Returns non-zero if the frame is dropped.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2739) * Always consumes the frame.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2740) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2741) static int fcoe_ctlr_vn_recv(struct fcoe_ctlr *fip, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2742) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2743) struct fip_header *fiph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2744) enum fip_vn2vn_subcode sub;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2745) struct fcoe_rport frport = { };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2746) int rc, vlan_id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2748) fiph = (struct fip_header *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2749) sub = fiph->fip_subcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2751) if (fip->lp->vlan)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2752) vlan_id = skb_vlan_tag_get_id(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2753)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2754) if (vlan_id && vlan_id != fip->lp->vlan) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2755) LIBFCOE_FIP_DBG(fip, "vn_recv drop frame sub %x vlan %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2756) sub, vlan_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2757) rc = -EAGAIN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2758) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2759) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2761) rc = fcoe_ctlr_vn_parse(fip, skb, &frport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2762) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2763) LIBFCOE_FIP_DBG(fip, "vn_recv vn_parse error %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2764) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2765) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2767) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2768) switch (sub) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2769) case FIP_SC_VN_PROBE_REQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2770) fcoe_ctlr_vn_probe_req(fip, &frport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2771) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2772) case FIP_SC_VN_PROBE_REP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2773) fcoe_ctlr_vn_probe_reply(fip, &frport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2774) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2775) case FIP_SC_VN_CLAIM_NOTIFY:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2776) fcoe_ctlr_vn_claim_notify(fip, &frport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2777) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2778) case FIP_SC_VN_CLAIM_REP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2779) fcoe_ctlr_vn_claim_resp(fip, &frport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2780) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2781) case FIP_SC_VN_BEACON:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2782) fcoe_ctlr_vn_beacon(fip, &frport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2783) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2784) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2785) LIBFCOE_FIP_DBG(fip, "vn_recv unknown subcode %d\n", sub);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2786) rc = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2787) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2788) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2789) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2790) drop:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2791) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2792) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2793) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2794)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2795) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2796) * fcoe_ctlr_vlan_parse - parse vlan discovery request or response
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2797) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2798) * @skb: incoming packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2799) * @frport: parsed FCoE rport from the probe request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2800) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2801) * Returns non-zero error number on error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2802) * Does not consume the packet.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2803) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2804) static int fcoe_ctlr_vlan_parse(struct fcoe_ctlr *fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2805) struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2806) struct fcoe_rport *frport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2807) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2808) struct fip_header *fiph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2809) struct fip_desc *desc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2810) struct fip_mac_desc *macd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2811) struct fip_wwn_desc *wwn = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2812) size_t rlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2813) size_t dlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2814) u32 desc_mask = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2815) u32 dtype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2816) u8 sub;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2817)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2818) fiph = (struct fip_header *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2819) frport->flags = ntohs(fiph->fip_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2820)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2821) sub = fiph->fip_subcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2822) switch (sub) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2823) case FIP_SC_VL_REQ:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2824) desc_mask = BIT(FIP_DT_MAC) | BIT(FIP_DT_NAME);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2825) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2826) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2827) LIBFCOE_FIP_DBG(fip, "vn_parse unknown subcode %u\n", sub);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2828) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2829) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2830)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2831) rlen = ntohs(fiph->fip_dl_len) * 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2832) if (rlen + sizeof(*fiph) > skb->len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2833) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2835) desc = (struct fip_desc *)(fiph + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2836) while (rlen > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2837) dlen = desc->fip_dlen * FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2838) if (dlen < sizeof(*desc) || dlen > rlen)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2839) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2840)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2841) dtype = desc->fip_dtype;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2842) if (dtype < 32) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2843) if (!(desc_mask & BIT(dtype))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2844) LIBFCOE_FIP_DBG(fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2845) "unexpected or duplicated desc "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2846) "desc type %u in "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2847) "FIP VN2VN subtype %u\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2848) dtype, sub);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2849) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2850) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2851) desc_mask &= ~BIT(dtype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2852) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2854) switch (dtype) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2855) case FIP_DT_MAC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2856) if (dlen != sizeof(struct fip_mac_desc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2857) goto len_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2858) macd = (struct fip_mac_desc *)desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2859) if (!is_valid_ether_addr(macd->fd_mac)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2860) LIBFCOE_FIP_DBG(fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2861) "Invalid MAC addr %pM in FIP VN2VN\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2862) macd->fd_mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2863) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2864) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2865) memcpy(frport->enode_mac, macd->fd_mac, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2866) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2867) case FIP_DT_NAME:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2868) if (dlen != sizeof(struct fip_wwn_desc))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2869) goto len_err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2870) wwn = (struct fip_wwn_desc *)desc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2871) frport->rdata.ids.node_name =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2872) get_unaligned_be64(&wwn->fd_wwn);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2873) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2874) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2875) LIBFCOE_FIP_DBG(fip, "unexpected descriptor type %x "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2876) "in FIP probe\n", dtype);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2877) /* standard says ignore unknown descriptors >= 128 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2878) if (dtype < FIP_DT_NON_CRITICAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2879) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2880) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2881) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2882) desc = (struct fip_desc *)((char *)desc + dlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2883) rlen -= dlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2884) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2885) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2886)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2887) len_err:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2888) LIBFCOE_FIP_DBG(fip, "FIP length error in descriptor type %x len %zu\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2889) dtype, dlen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2890) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2891) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2892)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2893) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2894) * fcoe_ctlr_vlan_send() - Send a FIP VLAN Notification
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2895) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2896) * @sub: sub-opcode for vlan notification or vn2vn vlan notification
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2897) * @dest: The destination Ethernet MAC address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2898) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2899) static void fcoe_ctlr_vlan_send(struct fcoe_ctlr *fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2900) enum fip_vlan_subcode sub,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2901) const u8 *dest)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2902) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2903) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2904) struct fip_vlan_notify_frame {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2905) struct ethhdr eth;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2906) struct fip_header fip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2907) struct fip_mac_desc mac;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2908) struct fip_vlan_desc vlan;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2909) } __packed * frame;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2910) size_t len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2911) size_t dlen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2912)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2913) len = sizeof(*frame);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2914) dlen = sizeof(frame->mac) + sizeof(frame->vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2915) len = max(len, sizeof(struct ethhdr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2916)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2917) skb = dev_alloc_skb(len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2918) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2919) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2921) LIBFCOE_FIP_DBG(fip, "fip %s vlan notification, vlan %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2922) fip->mode == FIP_MODE_VN2VN ? "vn2vn" : "fcf",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2923) fip->lp->vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2924)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2925) frame = (struct fip_vlan_notify_frame *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2926) memset(frame, 0, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2927) memcpy(frame->eth.h_dest, dest, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2929) memcpy(frame->eth.h_source, fip->ctl_src_addr, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2930) frame->eth.h_proto = htons(ETH_P_FIP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2932) frame->fip.fip_ver = FIP_VER_ENCAPS(FIP_VER);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2933) frame->fip.fip_op = htons(FIP_OP_VLAN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2934) frame->fip.fip_subcode = sub;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2935) frame->fip.fip_dl_len = htons(dlen / FIP_BPW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2936)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2937) frame->mac.fd_desc.fip_dtype = FIP_DT_MAC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2938) frame->mac.fd_desc.fip_dlen = sizeof(frame->mac) / FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2939) memcpy(frame->mac.fd_mac, fip->ctl_src_addr, ETH_ALEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2941) frame->vlan.fd_desc.fip_dtype = FIP_DT_VLAN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2942) frame->vlan.fd_desc.fip_dlen = sizeof(frame->vlan) / FIP_BPW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2943) put_unaligned_be16(fip->lp->vlan, &frame->vlan.fd_vlan);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2944)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2945) skb_put(skb, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2946) skb->protocol = htons(ETH_P_FIP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2947) skb->priority = fip->priority;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2948) skb_reset_mac_header(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2949) skb_reset_network_header(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2950)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2951) fip->send(fip, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2952) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2953)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2954) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2955) * fcoe_ctlr_vlan_disk_reply() - send FIP VLAN Discovery Notification.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2956) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2957) * @frport: The newly-parsed FCoE rport from the Discovery Request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2958) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2959) * Called with ctlr_mutex held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2960) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2961) static void fcoe_ctlr_vlan_disc_reply(struct fcoe_ctlr *fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2962) struct fcoe_rport *frport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2963) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2964) enum fip_vlan_subcode sub = FIP_SC_VL_NOTE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2965)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2966) if (fip->mode == FIP_MODE_VN2VN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2967) sub = FIP_SC_VL_VN2VN_NOTE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2968)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2969) fcoe_ctlr_vlan_send(fip, sub, frport->enode_mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2970) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2971)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2972) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2973) * fcoe_ctlr_vlan_recv - vlan request receive handler for VN2VN mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2974) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2975) * @skb: The received FIP packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2976) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2977) static int fcoe_ctlr_vlan_recv(struct fcoe_ctlr *fip, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2978) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2979) struct fip_header *fiph;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2980) enum fip_vlan_subcode sub;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2981) struct fcoe_rport frport = { };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2982) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2983)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2984) fiph = (struct fip_header *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2985) sub = fiph->fip_subcode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2986) rc = fcoe_ctlr_vlan_parse(fip, skb, &frport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2987) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2988) LIBFCOE_FIP_DBG(fip, "vlan_recv vlan_parse error %d\n", rc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2989) goto drop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2990) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2991) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2992) if (sub == FIP_SC_VL_REQ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2993) fcoe_ctlr_vlan_disc_reply(fip, &frport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2994) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2995)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2996) drop:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2997) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2998) return rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2999) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3001) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3002) * fcoe_ctlr_disc_recv - discovery receive handler for VN2VN mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3003) * @lport: The local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3004) * @fp: The received frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3005) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3006) * This should never be called since we don't see RSCNs or other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3007) * fabric-generated ELSes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3008) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3009) static void fcoe_ctlr_disc_recv(struct fc_lport *lport, struct fc_frame *fp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3010) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3011) struct fc_seq_els_data rjt_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3013) rjt_data.reason = ELS_RJT_UNSUP;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3014) rjt_data.explan = ELS_EXPL_NONE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3015) fc_seq_els_rsp_send(fp, ELS_LS_RJT, &rjt_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3016) fc_frame_free(fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3017) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3018)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3019) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3020) * fcoe_ctlr_disc_start - start discovery for VN2VN mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3021) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3022) * This sets a flag indicating that remote ports should be created
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3023) * and started for the peers we discover. We use the disc_callback
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3024) * pointer as that flag. Peers already discovered are created here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3025) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3026) * The lport lock is held during this call. The callback must be done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3027) * later, without holding either the lport or discovery locks.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3028) * The fcoe_ctlr lock may also be held during this call.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3029) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3030) static void fcoe_ctlr_disc_start(void (*callback)(struct fc_lport *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3031) enum fc_disc_event),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3032) struct fc_lport *lport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3033) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3034) struct fc_disc *disc = &lport->disc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3035) struct fcoe_ctlr *fip = disc->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3036)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3037) mutex_lock(&disc->disc_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3038) disc->disc_callback = callback;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3039) disc->disc_id = (disc->disc_id + 2) | 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3040) disc->pending = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3041) schedule_work(&fip->timer_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3042) mutex_unlock(&disc->disc_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3043) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3044)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3045) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3046) * fcoe_ctlr_vn_disc() - report FIP VN_port discovery results after claim state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3047) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3048) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3049) * Starts the FLOGI and PLOGI login process to each discovered rport for which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3050) * we've received at least one beacon.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3051) * Performs the discovery complete callback.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3052) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3053) static void fcoe_ctlr_vn_disc(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3054) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3055) struct fc_lport *lport = fip->lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3056) struct fc_disc *disc = &lport->disc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3057) struct fc_rport_priv *rdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3058) struct fcoe_rport *frport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3059) void (*callback)(struct fc_lport *, enum fc_disc_event);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3060)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3061) mutex_lock(&disc->disc_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3062) callback = disc->pending ? disc->disc_callback : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3063) disc->pending = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3064) list_for_each_entry_rcu(rdata, &disc->rports, peers) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3065) if (!kref_get_unless_zero(&rdata->kref))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3066) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3067) frport = fcoe_ctlr_rport(rdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3068) if (frport->time)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3069) fc_rport_login(rdata);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3070) kref_put(&rdata->kref, fc_rport_destroy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3071) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3072) mutex_unlock(&disc->disc_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3073) if (callback)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3074) callback(lport, DISC_EV_SUCCESS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3075) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3076)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3077) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3078) * fcoe_ctlr_vn_timeout - timer work function for VN2VN mode.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3079) * @fip: The FCoE controller
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3080) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3081) static void fcoe_ctlr_vn_timeout(struct fcoe_ctlr *fip)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3082) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3083) unsigned long next_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3084) u8 mac[ETH_ALEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3085) u32 new_port_id = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3086)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3087) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3088) switch (fip->state) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3089) case FIP_ST_VNMP_START:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3090) fcoe_ctlr_set_state(fip, FIP_ST_VNMP_PROBE1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3091) LIBFCOE_FIP_DBG(fip, "vn_timeout: send 1st probe request\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3092) fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REQ, fcoe_all_vn2vn, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3093) next_time = jiffies + msecs_to_jiffies(FIP_VN_PROBE_WAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3094) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3095) case FIP_ST_VNMP_PROBE1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3096) fcoe_ctlr_set_state(fip, FIP_ST_VNMP_PROBE2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3097) LIBFCOE_FIP_DBG(fip, "vn_timeout: send 2nd probe request\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3098) fcoe_ctlr_vn_send(fip, FIP_SC_VN_PROBE_REQ, fcoe_all_vn2vn, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3099) next_time = jiffies + msecs_to_jiffies(FIP_VN_ANN_WAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3100) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3101) case FIP_ST_VNMP_PROBE2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3102) fcoe_ctlr_set_state(fip, FIP_ST_VNMP_CLAIM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3103) new_port_id = fip->port_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3104) hton24(mac, FIP_VN_FC_MAP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3105) hton24(mac + 3, new_port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3106) fcoe_ctlr_map_dest(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3107) fip->update_mac(fip->lp, mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3108) LIBFCOE_FIP_DBG(fip, "vn_timeout: send claim notify\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3109) fcoe_ctlr_vn_send_claim(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3110) next_time = jiffies + msecs_to_jiffies(FIP_VN_ANN_WAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3111) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3112) case FIP_ST_VNMP_CLAIM:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3113) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3114) * This may be invoked either by starting discovery so don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3115) * go to the next state unless it's been long enough.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3116) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3117) next_time = fip->sol_time + msecs_to_jiffies(FIP_VN_ANN_WAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3118) if (time_after_eq(jiffies, next_time)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3119) fcoe_ctlr_set_state(fip, FIP_ST_VNMP_UP);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3120) LIBFCOE_FIP_DBG(fip, "vn_timeout: send vn2vn beacon\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3121) fcoe_ctlr_vn_send(fip, FIP_SC_VN_BEACON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3122) fcoe_all_vn2vn, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3123) next_time = jiffies + msecs_to_jiffies(FIP_VN_ANN_WAIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3124) fip->port_ka_time = next_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3125) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3126) fcoe_ctlr_vn_disc(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3127) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3128) case FIP_ST_VNMP_UP:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3129) next_time = fcoe_ctlr_vn_age(fip);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3130) if (time_after_eq(jiffies, fip->port_ka_time)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3131) LIBFCOE_FIP_DBG(fip, "vn_timeout: send vn2vn beacon\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3132) fcoe_ctlr_vn_send(fip, FIP_SC_VN_BEACON,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3133) fcoe_all_vn2vn, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3134) fip->port_ka_time = jiffies +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3135) msecs_to_jiffies(FIP_VN_BEACON_INT +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3136) (prandom_u32() % FIP_VN_BEACON_FUZZ));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3138) if (time_before(fip->port_ka_time, next_time))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3139) next_time = fip->port_ka_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3140) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3141) case FIP_ST_LINK_WAIT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3142) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3143) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3144) WARN(1, "unexpected state %d\n", fip->state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3145) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3147) mod_timer(&fip->timer, next_time);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3148) unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3149) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3150)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3151) /* If port ID is new, notify local port after dropping ctlr_mutex */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3152) if (new_port_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3153) fc_lport_set_local_id(fip->lp, new_port_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3154) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3155)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3156) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3157) * fcoe_ctlr_mode_set() - Set or reset the ctlr's mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3158) * @lport: The local port to be (re)configured
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3159) * @fip: The FCoE controller whose mode is changing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3160) * @fip_mode: The new fip mode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3161) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3162) * Note that the we shouldn't be changing the libfc discovery settings
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3163) * (fc_disc_config) while an lport is going through the libfc state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3164) * machine. The mode can only be changed when a fcoe_ctlr device is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3165) * disabled, so that should ensure that this routine is only called
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3166) * when nothing is happening.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3167) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3168) static void fcoe_ctlr_mode_set(struct fc_lport *lport, struct fcoe_ctlr *fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3169) enum fip_mode fip_mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3170) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3171) void *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3173) WARN_ON(lport->state != LPORT_ST_RESET &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3174) lport->state != LPORT_ST_DISABLED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3176) if (fip_mode == FIP_MODE_VN2VN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3177) lport->rport_priv_size = sizeof(struct fcoe_rport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3178) lport->point_to_multipoint = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3179) lport->tt.disc_recv_req = fcoe_ctlr_disc_recv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3180) lport->tt.disc_start = fcoe_ctlr_disc_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3181) lport->tt.disc_stop = fcoe_ctlr_disc_stop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3182) lport->tt.disc_stop_final = fcoe_ctlr_disc_stop_final;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3183) priv = fip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3184) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3185) lport->rport_priv_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3186) lport->point_to_multipoint = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3187) lport->tt.disc_recv_req = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3188) lport->tt.disc_start = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3189) lport->tt.disc_stop = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3190) lport->tt.disc_stop_final = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3191) priv = lport;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3192) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3193)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3194) fc_disc_config(lport, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3197) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3198) * fcoe_libfc_config() - Sets up libfc related properties for local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3199) * @lport: The local port to configure libfc for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3200) * @fip: The FCoE controller in use by the local port
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3201) * @tt: The libfc function template
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3202) * @init_fcp: If non-zero, the FCP portion of libfc should be initialized
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3203) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3204) * Returns : 0 for success
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3205) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3206) int fcoe_libfc_config(struct fc_lport *lport, struct fcoe_ctlr *fip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3207) const struct libfc_function_template *tt, int init_fcp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3208) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3209) /* Set the function pointers set by the LLDD */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3210) memcpy(&lport->tt, tt, sizeof(*tt));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3211) if (init_fcp && fc_fcp_init(lport))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3212) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3213) fc_exch_init(lport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3214) fc_elsct_init(lport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3215) fc_lport_init(lport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3216) fc_disc_init(lport);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3217) fcoe_ctlr_mode_set(lport, fip, fip->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3218) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3219) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3220) EXPORT_SYMBOL_GPL(fcoe_libfc_config);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3221)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3222) void fcoe_fcf_get_selected(struct fcoe_fcf_device *fcf_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3223) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3224) struct fcoe_ctlr_device *ctlr_dev = fcoe_fcf_dev_to_ctlr_dev(fcf_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3225) struct fcoe_ctlr *fip = fcoe_ctlr_device_priv(ctlr_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3226) struct fcoe_fcf *fcf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3228) mutex_lock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3229) mutex_lock(&ctlr_dev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3231) fcf = fcoe_fcf_device_priv(fcf_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3232) if (fcf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3233) fcf_dev->selected = (fcf == fip->sel_fcf) ? 1 : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3234) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3235) fcf_dev->selected = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3236)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3237) mutex_unlock(&ctlr_dev->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3238) mutex_unlock(&fip->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3240) EXPORT_SYMBOL(fcoe_fcf_get_selected);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3241)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3242) void fcoe_ctlr_set_fip_mode(struct fcoe_ctlr_device *ctlr_dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3243) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3244) struct fcoe_ctlr *ctlr = fcoe_ctlr_device_priv(ctlr_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3245) struct fc_lport *lport = ctlr->lp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3247) mutex_lock(&ctlr->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3248) switch (ctlr_dev->mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3249) case FIP_CONN_TYPE_VN2VN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3250) ctlr->mode = FIP_MODE_VN2VN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3251) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3252) case FIP_CONN_TYPE_FABRIC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3253) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3254) ctlr->mode = FIP_MODE_FABRIC;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3255) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3258) mutex_unlock(&ctlr->ctlr_mutex);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3260) fcoe_ctlr_mode_set(lport, ctlr, ctlr->mode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3262) EXPORT_SYMBOL(fcoe_ctlr_set_fip_mode);
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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