^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) * lec.c: Lan Emulation driver
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Marko Kiiskila <mkiiskila@yahoo.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #define pr_fmt(fmt) KBUILD_MODNAME ":%s: " fmt, __func__
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/slab.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/bitops.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/capability.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) /* We are ethernet device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/if_ether.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/netdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/etherdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <net/sock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/skbuff.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include <linux/ip.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include <asm/byteorder.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include <linux/uaccess.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include <net/arp.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include <net/dst.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #include <linux/proc_fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) #include <linux/spinlock.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #include <linux/seq_file.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) /* And atm device */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #include <linux/atmdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #include <linux/atmlec.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /* Proxy LEC knows about bridging */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #if IS_ENABLED(CONFIG_BRIDGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) #include "../bridge/br_private.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) static unsigned char bridge_ula_lec[] = { 0x01, 0x80, 0xc2, 0x00, 0x00 };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) /* Modular too */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) /* Hardening for Spectre-v1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) #include <linux/nospec.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) #include "lec.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) #include "lec_arpc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) #include "resources.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) #define DUMP_PACKETS 0 /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) * 0 = None,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) * 1 = 30 first bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) * 2 = Whole packet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) #define LEC_UNRES_QUE_LEN 8 /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) * number of tx packets to queue for a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) * single destination while waiting for SVC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) static int lec_open(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) static netdev_tx_t lec_start_xmit(struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) static int lec_close(struct net_device *dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) static struct lec_arp_table *lec_arp_find(struct lec_priv *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) const unsigned char *mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static int lec_arp_remove(struct lec_priv *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct lec_arp_table *to_remove);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) /* LANE2 functions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) static void lane2_associate_ind(struct net_device *dev, const u8 *mac_address,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) const u8 *tlvs, u32 sizeoftlvs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) static int lane2_resolve(struct net_device *dev, const u8 *dst_mac, int force,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) u8 **tlvs, u32 *sizeoftlvs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) static int lane2_associate_req(struct net_device *dev, const u8 *lan_dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) const u8 *tlvs, u32 sizeoftlvs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) static int lec_addr_delete(struct lec_priv *priv, const unsigned char *atm_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) unsigned long permanent);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) static void lec_arp_check_empties(struct lec_priv *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct atm_vcc *vcc, struct sk_buff *skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) static void lec_arp_destroy(struct lec_priv *priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) static void lec_arp_init(struct lec_priv *priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) static struct atm_vcc *lec_arp_resolve(struct lec_priv *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) const unsigned char *mac_to_find,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) int is_rdesc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) struct lec_arp_table **ret_entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) static void lec_arp_update(struct lec_priv *priv, const unsigned char *mac_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) const unsigned char *atm_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) unsigned long remoteflag,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) unsigned int targetless_le_arp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) static int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) static void lec_set_flush_tran_id(struct lec_priv *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) const unsigned char *atm_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) unsigned long tran_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) static void lec_vcc_added(struct lec_priv *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) const struct atmlec_ioc *ioc_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct atm_vcc *vcc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) void (*old_push)(struct atm_vcc *vcc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) struct sk_buff *skb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) /* must be done under lec_arp_lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) static inline void lec_arp_hold(struct lec_arp_table *entry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) refcount_inc(&entry->usage);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) static inline void lec_arp_put(struct lec_arp_table *entry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) if (refcount_dec_and_test(&entry->usage))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) kfree(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) static struct lane2_ops lane2_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) .resolve = lane2_resolve, /* spec 3.1.3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) .associate_req = lane2_associate_req, /* spec 3.1.4 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) .associate_indicator = NULL /* spec 3.1.5 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static unsigned char bus_mac[ETH_ALEN] = { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) /* Device structures */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) static struct net_device *dev_lec[MAX_LEC_ITF];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) #if IS_ENABLED(CONFIG_BRIDGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) static void lec_handle_bridge(struct sk_buff *skb, struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) char *buff;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) struct lec_priv *priv;
^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) * Check if this is a BPDU. If so, ask zeppelin to send
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * LE_TOPOLOGY_REQUEST with the same value of Topology Change bit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) * as the Config BPDU has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) buff = skb->data + skb->dev->hard_header_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) if (*buff++ == 0x42 && *buff++ == 0x42 && *buff++ == 0x03) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) struct sock *sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) struct sk_buff *skb2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) struct atmlec_msg *mesg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) skb2 = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) if (skb2 == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) skb2->len = sizeof(struct atmlec_msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) mesg = (struct atmlec_msg *)skb2->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) mesg->type = l_topology_change;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) buff += 4;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) mesg->content.normal.flag = *buff & 0x01;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) /* 0x01 is topology change */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) atm_force_charge(priv->lecd, skb2->truesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) sk = sk_atm(priv->lecd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) skb_queue_tail(&sk->sk_receive_queue, skb2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) sk->sk_data_ready(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) #endif /* IS_ENABLED(CONFIG_BRIDGE) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) * Open/initialize the netdevice. This is called (in the current kernel)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) * sometime after booting when the 'ifconfig' program is run.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) * This routine should set everything up anew at each open, even
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * registers that "should" only need to be set once at boot, so that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) * there is non-reboot way to recover if something goes wrong.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) static int lec_open(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) netif_start_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) lec_send(struct atm_vcc *vcc, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) struct net_device *dev = skb->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) ATM_SKB(skb)->vcc = vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) atm_account_tx(vcc, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) if (vcc->send(vcc, skb) < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) dev->stats.tx_dropped++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) dev->stats.tx_packets++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) dev->stats.tx_bytes += skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) static void lec_tx_timeout(struct net_device *dev, unsigned int txqueue)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) pr_info("%s\n", dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) netif_trans_update(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) netif_wake_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) static netdev_tx_t lec_start_xmit(struct sk_buff *skb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) struct sk_buff *skb2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) struct lec_priv *priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) struct lecdatahdr_8023 *lec_h;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) struct atm_vcc *vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) struct lec_arp_table *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) unsigned char *dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) int min_frame_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) int is_rdesc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) pr_debug("called\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) if (!priv->lecd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) pr_info("%s:No lecd attached\n", dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) dev->stats.tx_errors++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) netif_stop_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) return NETDEV_TX_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) pr_debug("skbuff head:%lx data:%lx tail:%lx end:%lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) (long)skb->head, (long)skb->data, (long)skb_tail_pointer(skb),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) (long)skb_end_pointer(skb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) #if IS_ENABLED(CONFIG_BRIDGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) if (memcmp(skb->data, bridge_ula_lec, sizeof(bridge_ula_lec)) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) lec_handle_bridge(skb, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) /* Make sure we have room for lec_id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) if (skb_headroom(skb) < 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) pr_debug("reallocating skb\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) skb2 = skb_realloc_headroom(skb, LEC_HEADER_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) if (unlikely(!skb2)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) return NETDEV_TX_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) consume_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) skb = skb2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) skb_push(skb, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) /* Put le header to place */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) lec_h = (struct lecdatahdr_8023 *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) lec_h->le_header = htons(priv->lecid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) #if DUMP_PACKETS >= 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) #define MAX_DUMP_SKB 99
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) #elif DUMP_PACKETS >= 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) #define MAX_DUMP_SKB 30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) #if DUMP_PACKETS >= 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) printk(KERN_DEBUG "%s: send datalen:%ld lecid:%4.4x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) dev->name, skb->len, priv->lecid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) print_hex_dump(KERN_DEBUG, "", DUMP_OFFSET, 16, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) skb->data, min(skb->len, MAX_DUMP_SKB), true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) #endif /* DUMP_PACKETS >= 1 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) /* Minimum ethernet-frame size */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) min_frame_size = LEC_MINIMUM_8023_SIZE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) if (skb->len < min_frame_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) if ((skb->len + skb_tailroom(skb)) < min_frame_size) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) skb2 = skb_copy_expand(skb, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) min_frame_size - skb->truesize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) dev_kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (skb2 == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) dev->stats.tx_dropped++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) return NETDEV_TX_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) skb = skb2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276) skb_put(skb, min_frame_size - skb->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) /* Send to right vcc */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) is_rdesc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) dst = lec_h->h_dest;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) entry = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) vcc = lec_arp_resolve(priv, dst, is_rdesc, &entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284) pr_debug("%s:vcc:%p vcc_flags:%lx, entry:%p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) dev->name, vcc, vcc ? vcc->flags : 0, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) if (!vcc || !test_bit(ATM_VF_READY, &vcc->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) if (entry && (entry->tx_wait.qlen < LEC_UNRES_QUE_LEN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) pr_debug("%s:queuing packet, MAC address %pM\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) dev->name, lec_h->h_dest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) skb_queue_tail(&entry->tx_wait, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) pr_debug("%s:tx queue full or no arp entry, dropping, MAC address: %pM\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) dev->name, lec_h->h_dest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) dev->stats.tx_dropped++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) dev_kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) #if DUMP_PACKETS > 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) printk(KERN_DEBUG "%s:sending to vpi:%d vci:%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) dev->name, vcc->vpi, vcc->vci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) #endif /* DUMP_PACKETS > 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) while (entry && (skb2 = skb_dequeue(&entry->tx_wait))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) pr_debug("emptying tx queue, MAC address %pM\n", lec_h->h_dest);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) lec_send(vcc, skb2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) lec_send(vcc, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) if (!atm_may_send(vcc, 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) vpriv->xoff = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) netif_stop_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) * vcc->pop() might have occurred in between, making
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) * the vcc usuable again. Since xmit is serialized,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) * this is the only situation we have to re-test.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323) if (atm_may_send(vcc, 0))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) netif_wake_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) if (entry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) lec_arp_put(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) netif_trans_update(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) return NETDEV_TX_OK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) /* The inverse routine to net_open(). */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) static int lec_close(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) netif_stop_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) static int lec_atm_send(struct atm_vcc *vcc, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) struct net_device *dev = (struct net_device *)vcc->proto_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) struct lec_priv *priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) struct atmlec_msg *mesg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) struct lec_arp_table *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) char *tmp; /* FIXME */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) WARN_ON(refcount_sub_and_test(skb->truesize, &sk_atm(vcc)->sk_wmem_alloc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) mesg = (struct atmlec_msg *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) tmp = skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) tmp += sizeof(struct atmlec_msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) pr_debug("%s: msg from zeppelin:%d\n", dev->name, mesg->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) switch (mesg->type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) case l_set_mac_addr:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) for (i = 0; i < 6; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) dev->dev_addr[i] = mesg->content.normal.mac_addr[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) case l_del_mac_addr:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) for (i = 0; i < 6; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) dev->dev_addr[i] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) case l_addr_delete:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) lec_addr_delete(priv, mesg->content.normal.atm_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) mesg->content.normal.flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) case l_topology_change:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370) priv->topology_change = mesg->content.normal.flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) case l_flush_complete:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) lec_flush_complete(priv, mesg->content.normal.flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) case l_narp_req: /* LANE2: see 7.1.35 in the lane2 spec */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) spin_lock_irqsave(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) entry = lec_arp_find(priv, mesg->content.normal.mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) lec_arp_remove(priv, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) if (mesg->content.normal.no_source_le_narp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) fallthrough;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) case l_arp_update:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) lec_arp_update(priv, mesg->content.normal.mac_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) mesg->content.normal.atm_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) mesg->content.normal.flag,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) mesg->content.normal.targetless_le_arp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) pr_debug("in l_arp_update\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) if (mesg->sizeoftlvs != 0) { /* LANE2 3.1.5 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) pr_debug("LANE2 3.1.5, got tlvs, size %d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) mesg->sizeoftlvs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) lane2_associate_ind(dev, mesg->content.normal.mac_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) tmp, mesg->sizeoftlvs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) case l_config:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) priv->maximum_unknown_frame_count =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) mesg->content.config.maximum_unknown_frame_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) priv->max_unknown_frame_time =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) (mesg->content.config.max_unknown_frame_time * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) priv->max_retry_count = mesg->content.config.max_retry_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) priv->aging_time = (mesg->content.config.aging_time * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) priv->forward_delay_time =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) (mesg->content.config.forward_delay_time * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) priv->arp_response_time =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) (mesg->content.config.arp_response_time * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) priv->flush_timeout = (mesg->content.config.flush_timeout * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) priv->path_switching_delay =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) (mesg->content.config.path_switching_delay * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) priv->lane_version = mesg->content.config.lane_version;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) /* LANE2 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) priv->lane2_ops = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (priv->lane_version > 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) priv->lane2_ops = &lane2_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) rtnl_lock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) if (dev_set_mtu(dev, mesg->content.config.mtu))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) pr_info("%s: change_mtu to %d failed\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) dev->name, mesg->content.config.mtu);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) rtnl_unlock();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) priv->is_proxy = mesg->content.config.is_proxy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) case l_flush_tran_id:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) lec_set_flush_tran_id(priv, mesg->content.normal.atm_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) mesg->content.normal.flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) case l_set_lecid:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) priv->lecid =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) (unsigned short)(0xffff & mesg->content.normal.flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) case l_should_bridge:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) #if IS_ENABLED(CONFIG_BRIDGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) pr_debug("%s: bridge zeppelin asks about %pM\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) dev->name, mesg->content.proxy.mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) if (br_fdb_test_addr_hook == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) if (br_fdb_test_addr_hook(dev, mesg->content.proxy.mac_addr)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) /* hit from bridge table, send LE_ARP_RESPONSE */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) struct sk_buff *skb2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) struct sock *sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) pr_debug("%s: entry found, responding to zeppelin\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) skb2 = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) if (skb2 == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) skb2->len = sizeof(struct atmlec_msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) skb_copy_to_linear_data(skb2, mesg, sizeof(*mesg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) atm_force_charge(priv->lecd, skb2->truesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) sk = sk_atm(priv->lecd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) skb_queue_tail(&sk->sk_receive_queue, skb2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) sk->sk_data_ready(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) #endif /* IS_ENABLED(CONFIG_BRIDGE) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) pr_info("%s: Unknown message type %d\n", dev->name, mesg->type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) dev_kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) dev_kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) static void lec_atm_close(struct atm_vcc *vcc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) struct net_device *dev = (struct net_device *)vcc->proto_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) struct lec_priv *priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) priv->lecd = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) /* Do something needful? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) netif_stop_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) lec_arp_destroy(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) if (skb_peek(&sk_atm(vcc)->sk_receive_queue))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) pr_info("%s closing with messages pending\n", dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) while ((skb = skb_dequeue(&sk_atm(vcc)->sk_receive_queue))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) atm_return(vcc, skb->truesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) dev_kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) pr_info("%s: Shut down!\n", dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) module_put(THIS_MODULE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) static const struct atmdev_ops lecdev_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) .close = lec_atm_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) .send = lec_atm_send
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) static struct atm_dev lecatm_dev = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) .ops = &lecdev_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) .type = "lec",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) .number = 999, /* dummy device number */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) .lock = __SPIN_LOCK_UNLOCKED(lecatm_dev.lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) * LANE2: new argument struct sk_buff *data contains
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506) * the LE_ARP based TLVs introduced in the LANE2 spec
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) send_to_lecd(struct lec_priv *priv, atmlec_msg_type type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) const unsigned char *mac_addr, const unsigned char *atm_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) struct sk_buff *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) struct sock *sk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) struct atmlec_msg *mesg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) if (!priv || !priv->lecd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) skb = alloc_skb(sizeof(struct atmlec_msg), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) if (!skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) skb->len = sizeof(struct atmlec_msg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) mesg = (struct atmlec_msg *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) memset(mesg, 0, sizeof(struct atmlec_msg));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) mesg->type = type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) if (data != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) mesg->sizeoftlvs = data->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) if (mac_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) ether_addr_copy(mesg->content.normal.mac_addr, mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) mesg->content.normal.targetless_le_arp = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) if (atm_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) memcpy(&mesg->content.normal.atm_addr, atm_addr, ATM_ESA_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) atm_force_charge(priv->lecd, skb->truesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) sk = sk_atm(priv->lecd);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) skb_queue_tail(&sk->sk_receive_queue, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) sk->sk_data_ready(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) if (data != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) pr_debug("about to send %d bytes of data\n", data->len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) atm_force_charge(priv->lecd, data->truesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) skb_queue_tail(&sk->sk_receive_queue, data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) sk->sk_data_ready(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) static void lec_set_multicast_list(struct net_device *dev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) * by default, all multicast frames arrive over the bus.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) * eventually support selective multicast service
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) static const struct net_device_ops lec_netdev_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) .ndo_open = lec_open,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) .ndo_stop = lec_close,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) .ndo_start_xmit = lec_start_xmit,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) .ndo_tx_timeout = lec_tx_timeout,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) .ndo_set_rx_mode = lec_set_multicast_list,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) static const unsigned char lec_ctrl_magic[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) 0xff,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) 0x00,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) 0x01,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) #define LEC_DATA_DIRECT_8023 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) #define LEC_DATA_DIRECT_8025 3
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) static int lec_is_data_direct(struct atm_vcc *vcc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) return ((vcc->sap.blli[0].l3.tr9577.snap[4] == LEC_DATA_DIRECT_8023) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) (vcc->sap.blli[0].l3.tr9577.snap[4] == LEC_DATA_DIRECT_8025));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582) static void lec_push(struct atm_vcc *vcc, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) struct net_device *dev = (struct net_device *)vcc->proto_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) struct lec_priv *priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) #if DUMP_PACKETS > 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) printk(KERN_DEBUG "%s: vcc vpi:%d vci:%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) dev->name, vcc->vpi, vcc->vci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) if (!skb) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) pr_debug("%s: null skb\n", dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) lec_vcc_close(priv, vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) #if DUMP_PACKETS >= 2
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) #define MAX_SKB_DUMP 99
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) #elif DUMP_PACKETS >= 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) #define MAX_SKB_DUMP 30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) #if DUMP_PACKETS > 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) printk(KERN_DEBUG "%s: rcv datalen:%ld lecid:%4.4x\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) dev->name, skb->len, priv->lecid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) print_hex_dump(KERN_DEBUG, "", DUMP_OFFSET, 16, 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) skb->data, min(MAX_SKB_DUMP, skb->len), true);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) #endif /* DUMP_PACKETS > 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) if (memcmp(skb->data, lec_ctrl_magic, 4) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) /* Control frame, to daemon */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) struct sock *sk = sk_atm(vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) pr_debug("%s: To daemon\n", dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) skb_queue_tail(&sk->sk_receive_queue, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) sk->sk_data_ready(sk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) } else { /* Data frame, queue to protocol handlers */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) struct lec_arp_table *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) unsigned char *src, *dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) atm_return(vcc, skb->truesize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) if (*(__be16 *) skb->data == htons(priv->lecid) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) !priv->lecd || !(dev->flags & IFF_UP)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) * Probably looping back, or if lecd is missing,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) * lecd has gone down
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626) pr_debug("Ignoring frame...\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) dev_kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) dst = ((struct lecdatahdr_8023 *)skb->data)->h_dest;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) * If this is a Data Direct VCC, and the VCC does not match
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) * the LE_ARP cache entry, delete the LE_ARP cache entry.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) spin_lock_irqsave(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) if (lec_is_data_direct(vcc)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) src = ((struct lecdatahdr_8023 *)skb->data)->h_source;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) entry = lec_arp_find(priv, src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) if (entry && entry->vcc != vcc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) lec_arp_remove(priv, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) lec_arp_put(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) if (!(dst[0] & 0x01) && /* Never filter Multi/Broadcast */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) !priv->is_proxy && /* Proxy wants all the packets */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) memcmp(dst, dev->dev_addr, dev->addr_len)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) dev_kfree_skb(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) if (!hlist_empty(&priv->lec_arp_empty_ones))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) lec_arp_check_empties(priv, vcc, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) skb_pull(skb, 2); /* skip lec_id */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) skb->protocol = eth_type_trans(skb, dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) dev->stats.rx_packets++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) dev->stats.rx_bytes += skb->len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) memset(ATM_SKB(skb), 0, sizeof(struct atm_skb_data));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) netif_rx(skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) static void lec_pop(struct atm_vcc *vcc, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) struct net_device *dev = skb->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669) if (vpriv == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) pr_info("vpriv = NULL!?!?!?\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) vpriv->old_pop(vcc, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) if (vpriv->xoff && atm_may_send(vcc, 0)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) vpriv->xoff = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) if (netif_running(dev) && netif_queue_stopped(dev))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) netif_wake_queue(dev);
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) static int lec_vcc_attach(struct atm_vcc *vcc, void __user *arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) struct lec_vcc_priv *vpriv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) int bytes_left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) struct atmlec_ioc ioc_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) /* Lecd must be up in this case */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) bytes_left = copy_from_user(&ioc_data, arg, sizeof(struct atmlec_ioc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) if (bytes_left != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) pr_info("copy from user failed for %d bytes\n", bytes_left);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) if (ioc_data.dev_num < 0 || ioc_data.dev_num >= MAX_LEC_ITF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) ioc_data.dev_num = array_index_nospec(ioc_data.dev_num, MAX_LEC_ITF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) if (!dev_lec[ioc_data.dev_num])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) if (!vpriv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) vpriv->xoff = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) vpriv->old_pop = vcc->pop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) vcc->user_back = vpriv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) vcc->pop = lec_pop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) lec_vcc_added(netdev_priv(dev_lec[ioc_data.dev_num]),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) &ioc_data, vcc, vcc->push);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) vcc->proto_data = dev_lec[ioc_data.dev_num];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) vcc->push = lec_push;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) static int lec_mcast_attach(struct atm_vcc *vcc, int arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) if (arg < 0 || arg >= MAX_LEC_ITF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) arg = array_index_nospec(arg, MAX_LEC_ITF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) if (!dev_lec[arg])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) vcc->proto_data = dev_lec[arg];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) return lec_mcast_make(netdev_priv(dev_lec[arg]), vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) /* Initialize device. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) static int lecd_attach(struct atm_vcc *vcc, int arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) struct lec_priv *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) if (arg < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) arg = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) if (arg >= MAX_LEC_ITF)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) i = array_index_nospec(arg, MAX_LEC_ITF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) if (!dev_lec[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) int size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) size = sizeof(struct lec_priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) dev_lec[i] = alloc_etherdev(size);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) if (!dev_lec[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) dev_lec[i]->netdev_ops = &lec_netdev_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) dev_lec[i]->max_mtu = 18190;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) snprintf(dev_lec[i]->name, IFNAMSIZ, "lec%d", i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) if (register_netdev(dev_lec[i])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) free_netdev(dev_lec[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) priv = netdev_priv(dev_lec[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) priv = netdev_priv(dev_lec[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) if (priv->lecd)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) return -EADDRINUSE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) lec_arp_init(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) priv->itfnum = i; /* LANE2 addition */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) priv->lecd = vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) vcc->dev = &lecatm_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) vcc_insert_socket(sk_atm(vcc));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) vcc->proto_data = dev_lec[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) set_bit(ATM_VF_META, &vcc->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) set_bit(ATM_VF_READY, &vcc->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) /* Set default values to these variables */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) priv->maximum_unknown_frame_count = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) priv->max_unknown_frame_time = (1 * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) priv->vcc_timeout_period = (1200 * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) priv->max_retry_count = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) priv->aging_time = (300 * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) priv->forward_delay_time = (15 * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) priv->topology_change = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) priv->arp_response_time = (1 * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) priv->flush_timeout = (4 * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) priv->path_switching_delay = (6 * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) if (dev_lec[i]->flags & IFF_UP)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) netif_start_queue(dev_lec[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) __module_get(THIS_MODULE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) return i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) #ifdef CONFIG_PROC_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) static const char *lec_arp_get_status_string(unsigned char status)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786) static const char *const lec_arp_status_string[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) "ESI_UNKNOWN ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788) "ESI_ARP_PENDING ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) "ESI_VC_PENDING ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) "<Undefined> ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) "ESI_FLUSH_PENDING ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) "ESI_FORWARD_DIRECT"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) if (status > ESI_FORWARD_DIRECT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) status = 3; /* ESI_UNDEFINED */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) return lec_arp_status_string[status];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) static void lec_info(struct seq_file *seq, struct lec_arp_table *entry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) seq_printf(seq, "%pM ", entry->mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) seq_printf(seq, "%*phN ", ATM_ESA_LEN, entry->atm_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) seq_printf(seq, "%s %4.4x", lec_arp_get_status_string(entry->status),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) entry->flags & 0xffff);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) if (entry->vcc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) seq_printf(seq, "%3d %3d ", entry->vcc->vpi, entry->vcc->vci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) seq_printf(seq, " ");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) if (entry->recv_vcc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) seq_printf(seq, " %3d %3d", entry->recv_vcc->vpi,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) entry->recv_vcc->vci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) seq_putc(seq, '\n');
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) struct lec_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) struct lec_priv *locked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) struct hlist_node *node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) int itf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) int arp_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) int misc_table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) static void *lec_tbl_walk(struct lec_state *state, struct hlist_head *tbl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) loff_t *l)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) struct hlist_node *e = state->node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) if (!e)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) e = tbl->first;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834) if (e == SEQ_START_TOKEN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) e = tbl->first;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) --*l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) for (; e; e = e->next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) if (--*l < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) state->node = e;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) return (*l < 0) ? state : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) static void *lec_arp_walk(struct lec_state *state, loff_t *l,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) struct lec_priv *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) void *v = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) int p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) for (p = state->arp_table; p < LEC_ARP_TABLE_SIZE; p++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) v = lec_tbl_walk(state, &priv->lec_arp_tables[p], l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) if (v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) state->arp_table = p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) return v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) static void *lec_misc_walk(struct lec_state *state, loff_t *l,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) struct lec_priv *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) struct hlist_head *lec_misc_tables[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) &priv->lec_arp_empty_ones,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) &priv->lec_no_forward,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) &priv->mcast_fwds
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) void *v = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) int q;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) for (q = state->misc_table; q < ARRAY_SIZE(lec_misc_tables); q++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) v = lec_tbl_walk(state, lec_misc_tables[q], l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) if (v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) state->misc_table = q;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880) return v;
^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) static void *lec_priv_walk(struct lec_state *state, loff_t *l,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) struct lec_priv *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) if (!state->locked) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) state->locked = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) spin_lock_irqsave(&priv->lec_arp_lock, state->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) if (!lec_arp_walk(state, l, priv) && !lec_misc_walk(state, l, priv)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) spin_unlock_irqrestore(&priv->lec_arp_lock, state->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) state->locked = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) /* Partial state reset for the next time we get called */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) state->arp_table = state->misc_table = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) return state->locked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) static void *lec_itf_walk(struct lec_state *state, loff_t *l)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) struct net_device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) void *v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) dev = state->dev ? state->dev : dev_lec[state->itf];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) v = (dev && netdev_priv(dev)) ?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) lec_priv_walk(state, l, netdev_priv(dev)) : NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) if (!v && dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) dev_put(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) /* Partial state reset for the next time we get called */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) state->dev = dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) return v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) static void *lec_get_idx(struct lec_state *state, loff_t l)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) void *v = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) for (; state->itf < MAX_LEC_ITF; state->itf++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) v = lec_itf_walk(state, &l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) if (v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) return v;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) static void *lec_seq_start(struct seq_file *seq, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) struct lec_state *state = seq->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) state->itf = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) state->dev = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) state->locked = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) state->arp_table = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) state->misc_table = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) state->node = SEQ_START_TOKEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) return *pos ? lec_get_idx(state, *pos) : SEQ_START_TOKEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) static void lec_seq_stop(struct seq_file *seq, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) struct lec_state *state = seq->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) if (state->dev) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) spin_unlock_irqrestore(&state->locked->lec_arp_lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) state->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) dev_put(state->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) static void *lec_seq_next(struct seq_file *seq, void *v, loff_t *pos)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) struct lec_state *state = seq->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) ++*pos;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) return lec_get_idx(state, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) static int lec_seq_show(struct seq_file *seq, void *v)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) static const char lec_banner[] =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) "Itf MAC ATM destination"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) " Status Flags "
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) "VPI/VCI Recv VPI/VCI\n";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) if (v == SEQ_START_TOKEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) seq_puts(seq, lec_banner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) struct lec_state *state = seq->private;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) struct net_device *dev = state->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) struct lec_arp_table *entry = hlist_entry(state->node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) struct lec_arp_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) seq_printf(seq, "%s ", dev->name);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) lec_info(seq, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) static const struct seq_operations lec_seq_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) .start = lec_seq_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) .next = lec_seq_next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) .stop = lec_seq_stop,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) .show = lec_seq_show,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) static int lane_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) struct atm_vcc *vcc = ATM_SD(sock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) case ATMLEC_CTRL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) case ATMLEC_MCAST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) case ATMLEC_DATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) if (!capable(CAP_NET_ADMIN))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) return -EPERM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) return -ENOIOCTLCMD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) switch (cmd) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) case ATMLEC_CTRL:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) err = lecd_attach(vcc, (int)arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) if (err >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) sock->state = SS_CONNECTED;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) case ATMLEC_MCAST:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) err = lec_mcast_attach(vcc, (int)arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) case ATMLEC_DATA:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) err = lec_vcc_attach(vcc, (void __user *)arg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024) static struct atm_ioctl lane_ioctl_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) .owner = THIS_MODULE,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) .ioctl = lane_ioctl,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) static int __init lane_module_init(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) #ifdef CONFIG_PROC_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) struct proc_dir_entry *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) p = proc_create_seq_private("lec", 0444, atm_proc_root, &lec_seq_ops,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) sizeof(struct lec_state), NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) if (!p) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) pr_err("Unable to initialize /proc/net/atm/lec\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) register_atm_ioctl(&lane_ioctl_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) pr_info("lec.c: initialized\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) static void __exit lane_module_cleanup(void)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) #ifdef CONFIG_PROC_FS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) remove_proc_entry("lec", atm_proc_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) deregister_atm_ioctl(&lane_ioctl_ops);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) for (i = 0; i < MAX_LEC_ITF; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) if (dev_lec[i] != NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) unregister_netdev(dev_lec[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) free_netdev(dev_lec[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) dev_lec[i] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066) module_init(lane_module_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) module_exit(lane_module_cleanup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) * LANE2: 3.1.3, LE_RESOLVE.request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) * Non force allocates memory and fills in *tlvs, fills in *sizeoftlvs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) * If sizeoftlvs == NULL the default TLVs associated with this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) * lec will be used.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) * If dst_mac == NULL, targetless LE_ARP will be sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) static int lane2_resolve(struct net_device *dev, const u8 *dst_mac, int force,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) u8 **tlvs, u32 *sizeoftlvs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) struct lec_priv *priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) struct lec_arp_table *table;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) if (force == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) spin_lock_irqsave(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) table = lec_arp_find(priv, dst_mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) if (table == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) *tlvs = kmemdup(table->tlvs, table->sizeoftlvs, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) if (*tlvs == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) *sizeoftlvs = table->sizeoftlvs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) if (sizeoftlvs == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) skb = alloc_skb(*sizeoftlvs, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) if (skb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) skb->len = *sizeoftlvs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) skb_copy_to_linear_data(skb, *tlvs, *sizeoftlvs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) retval = send_to_lecd(priv, l_arp_xmt, dst_mac, NULL, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) return retval;
^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) * LANE2: 3.1.4, LE_ASSOCIATE.request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) * Associate the *tlvs with the *lan_dst address.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) * Will overwrite any previous association
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) * Returns 1 for success, 0 for failure (out of memory)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) static int lane2_associate_req(struct net_device *dev, const u8 *lan_dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) const u8 *tlvs, u32 sizeoftlvs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) int retval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) struct lec_priv *priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) if (!ether_addr_equal(lan_dst, dev->dev_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) return 0; /* not our mac address */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) kfree(priv->tlvs); /* NULL if there was no previous association */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) priv->tlvs = kmemdup(tlvs, sizeoftlvs, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) if (priv->tlvs == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) priv->sizeoftlvs = sizeoftlvs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) skb = alloc_skb(sizeoftlvs, GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) if (skb == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) skb->len = sizeoftlvs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) skb_copy_to_linear_data(skb, tlvs, sizeoftlvs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144) retval = send_to_lecd(priv, l_associate_req, NULL, NULL, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) if (retval != 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) pr_info("lec.c: lane2_associate_req() failed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) * If the previous association has changed we must
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) * somehow notify other LANE entities about the change
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) * LANE2: 3.1.5, LE_ASSOCIATE.indication
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) static void lane2_associate_ind(struct net_device *dev, const u8 *mac_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) const u8 *tlvs, u32 sizeoftlvs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162) int i = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) struct lec_priv *priv = netdev_priv(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) #if 0 /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) * Why have the TLVs in LE_ARP entries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) * since we do not use them? When you
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) * uncomment this code, make sure the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) * TLVs get freed when entry is killed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) struct lec_arp_table *entry = lec_arp_find(priv, mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) if (entry == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) return; /* should not happen */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) kfree(entry->tlvs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) entry->tlvs = kmemdup(tlvs, sizeoftlvs, GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) if (entry->tlvs == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) entry->sizeoftlvs = sizeoftlvs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) pr_info("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) pr_info("dump of tlvs, sizeoftlvs=%d\n", sizeoftlvs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) while (i < sizeoftlvs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) pr_cont("%02x ", tlvs[i++]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) pr_cont("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) /* tell MPOA about the TLVs we saw */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) if (priv->lane2_ops && priv->lane2_ops->associate_indicator) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) priv->lane2_ops->associate_indicator(dev, mac_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195) tlvs, sizeoftlvs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) * Here starts what used to lec_arpc.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) * lec_arpc.c was added here when making
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) * lane client modular. October 1997
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207) #include <linux/timer.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) #include <linux/param.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) #include <linux/atomic.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) #include <linux/inetdevice.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) #include <net/route.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) #define pr_debug(format, args...)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) #define pr_debug printk
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) #define DEBUG_ARP_TABLE 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) #define LEC_ARP_REFRESH_INTERVAL (3*HZ)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) static void lec_arp_check_expire(struct work_struct *work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) static void lec_arp_expire_arp(struct timer_list *t);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) * Arp table funcs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) #define HASH(ch) (ch & (LEC_ARP_TABLE_SIZE - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) * Initialization of arp-cache
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) static void lec_arp_init(struct lec_priv *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237) unsigned short i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) for (i = 0; i < LEC_ARP_TABLE_SIZE; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) INIT_HLIST_HEAD(&priv->lec_arp_tables[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) INIT_HLIST_HEAD(&priv->lec_arp_empty_ones);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) INIT_HLIST_HEAD(&priv->lec_no_forward);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243) INIT_HLIST_HEAD(&priv->mcast_fwds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) spin_lock_init(&priv->lec_arp_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245) INIT_DELAYED_WORK(&priv->lec_arp_work, lec_arp_check_expire);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) schedule_delayed_work(&priv->lec_arp_work, LEC_ARP_REFRESH_INTERVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) static void lec_arp_clear_vccs(struct lec_arp_table *entry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251) if (entry->vcc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) struct atm_vcc *vcc = entry->vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) struct net_device *dev = (struct net_device *)vcc->proto_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) vcc->pop = vpriv->old_pop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257) if (vpriv->xoff)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) netif_wake_queue(dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259) kfree(vpriv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) vcc->user_back = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) vcc->push = entry->old_push;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) vcc_release_async(vcc, -EPIPE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) entry->vcc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) if (entry->recv_vcc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266) struct atm_vcc *vcc = entry->recv_vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) struct lec_vcc_priv *vpriv = LEC_VCC_PRIV(vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) kfree(vpriv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) vcc->user_back = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) entry->recv_vcc->push = entry->old_recv_push;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273) vcc_release_async(entry->recv_vcc, -EPIPE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) entry->recv_vcc = NULL;
^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) * Insert entry to lec_arp_table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) * LANE2: Add to the end of the list to satisfy 8.1.13
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) static inline void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283) lec_arp_add(struct lec_priv *priv, struct lec_arp_table *entry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) struct hlist_head *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) tmp = &priv->lec_arp_tables[HASH(entry->mac_addr[ETH_ALEN - 1])];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) hlist_add_head(&entry->next, tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) pr_debug("Added entry:%pM\n", entry->mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) * Remove entry from lec_arp_table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) lec_arp_remove(struct lec_priv *priv, struct lec_arp_table *to_remove)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) struct lec_arp_table *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) int i, remove_vcc = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) if (!to_remove)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) hlist_del(&to_remove->next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) del_timer(&to_remove->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) * If this is the only MAC connected to this VCC,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) * also tear down the VCC
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312) if (to_remove->status >= ESI_FLUSH_PENDING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) * ESI_FLUSH_PENDING, ESI_FORWARD_DIRECT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) hlist_for_each_entry(entry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) &priv->lec_arp_tables[i], next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319) if (memcmp(to_remove->atm_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) entry->atm_addr, ATM_ESA_LEN) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) remove_vcc = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326) if (remove_vcc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) lec_arp_clear_vccs(to_remove);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) skb_queue_purge(&to_remove->tx_wait); /* FIXME: good place for this? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) pr_debug("Removed entry:%pM\n", to_remove->mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) #if DEBUG_ARP_TABLE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) static const char *get_status_string(unsigned char st)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) switch (st) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) case ESI_UNKNOWN:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) return "ESI_UNKNOWN";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) case ESI_ARP_PENDING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) return "ESI_ARP_PENDING";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) case ESI_VC_PENDING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) return "ESI_VC_PENDING";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) case ESI_FLUSH_PENDING:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) return "ESI_FLUSH_PENDING";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) case ESI_FORWARD_DIRECT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) return "ESI_FORWARD_DIRECT";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) return "<UNKNOWN>";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) static void dump_arp_table(struct lec_priv *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) struct lec_arp_table *rulla;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) char buf[256];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) int i, offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) pr_info("Dump %p:\n", priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) hlist_for_each_entry(rulla,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362) &priv->lec_arp_tables[i], next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363) offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) offset += sprintf(buf, "%d: %p\n", i, rulla);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) offset += sprintf(buf + offset, "Mac: %pM ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) rulla->mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) offset += sprintf(buf + offset, "Atm: %*ph ", ATM_ESA_LEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) rulla->atm_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) offset += sprintf(buf + offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) rulla->vcc ? rulla->vcc->vpi : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) rulla->vcc ? rulla->vcc->vci : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) rulla->recv_vcc ? rulla->recv_vcc->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) vpi : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) rulla->recv_vcc ? rulla->recv_vcc->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) vci : 0, rulla->last_used,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) rulla->timestamp, rulla->no_tries);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) offset +=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) sprintf(buf + offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) "Flags:%x, Packets_flooded:%x, Status: %s ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) rulla->flags, rulla->packets_flooded,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382) get_status_string(rulla->status));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) pr_info("%s\n", buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) if (!hlist_empty(&priv->lec_no_forward))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) pr_info("No forward\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) hlist_for_each_entry(rulla, &priv->lec_no_forward, next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) offset += sprintf(buf + offset, "Mac: %pM ", rulla->mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) offset += sprintf(buf + offset, "Atm: %*ph ", ATM_ESA_LEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) rulla->atm_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) offset += sprintf(buf + offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) rulla->vcc ? rulla->vcc->vpi : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) rulla->vcc ? rulla->vcc->vci : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) rulla->recv_vcc ? rulla->recv_vcc->vpi : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) rulla->recv_vcc ? rulla->recv_vcc->vci : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400) rulla->last_used,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) rulla->timestamp, rulla->no_tries);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) offset += sprintf(buf + offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) "Flags:%x, Packets_flooded:%x, Status: %s ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) rulla->flags, rulla->packets_flooded,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) get_status_string(rulla->status));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) pr_info("%s\n", buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) if (!hlist_empty(&priv->lec_arp_empty_ones))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) pr_info("Empty ones\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411) hlist_for_each_entry(rulla, &priv->lec_arp_empty_ones, next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) offset += sprintf(buf + offset, "Mac: %pM ", rulla->mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) offset += sprintf(buf + offset, "Atm: %*ph ", ATM_ESA_LEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415) rulla->atm_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) offset += sprintf(buf + offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) rulla->vcc ? rulla->vcc->vpi : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) rulla->vcc ? rulla->vcc->vci : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) rulla->recv_vcc ? rulla->recv_vcc->vpi : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) rulla->recv_vcc ? rulla->recv_vcc->vci : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422) rulla->last_used,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) rulla->timestamp, rulla->no_tries);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) offset += sprintf(buf + offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) "Flags:%x, Packets_flooded:%x, Status: %s ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) rulla->flags, rulla->packets_flooded,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) get_status_string(rulla->status));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) pr_info("%s", buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) if (!hlist_empty(&priv->mcast_fwds))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) pr_info("Multicast Forward VCCs\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) hlist_for_each_entry(rulla, &priv->mcast_fwds, next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434) offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) offset += sprintf(buf + offset, "Mac: %pM ", rulla->mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) offset += sprintf(buf + offset, "Atm: %*ph ", ATM_ESA_LEN,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) rulla->atm_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) offset += sprintf(buf + offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) "Vcc vpi:%d vci:%d, Recv_vcc vpi:%d vci:%d Last_used:%lx, Timestamp:%lx, No_tries:%d ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) rulla->vcc ? rulla->vcc->vpi : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) rulla->vcc ? rulla->vcc->vci : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442) rulla->recv_vcc ? rulla->recv_vcc->vpi : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) rulla->recv_vcc ? rulla->recv_vcc->vci : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) rulla->last_used,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) rulla->timestamp, rulla->no_tries);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446) offset += sprintf(buf + offset,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) "Flags:%x, Packets_flooded:%x, Status: %s ",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) rulla->flags, rulla->packets_flooded,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) get_status_string(rulla->status));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) pr_info("%s\n", buf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) #define dump_arp_table(priv) do { } while (0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) * Destruction of arp-cache
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) static void lec_arp_destroy(struct lec_priv *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) struct hlist_node *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) struct lec_arp_table *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) cancel_delayed_work_sync(&priv->lec_arp_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) * Remove all entries
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) spin_lock_irqsave(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) hlist_for_each_entry_safe(entry, next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) &priv->lec_arp_tables[i], next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) lec_arp_remove(priv, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479) lec_arp_put(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) INIT_HLIST_HEAD(&priv->lec_arp_tables[i]);
^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) hlist_for_each_entry_safe(entry, next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) &priv->lec_arp_empty_ones, next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486) del_timer_sync(&entry->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) lec_arp_clear_vccs(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) hlist_del(&entry->next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) lec_arp_put(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491) INIT_HLIST_HEAD(&priv->lec_arp_empty_ones);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) hlist_for_each_entry_safe(entry, next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) &priv->lec_no_forward, next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) del_timer_sync(&entry->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) lec_arp_clear_vccs(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) hlist_del(&entry->next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) lec_arp_put(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500) INIT_HLIST_HEAD(&priv->lec_no_forward);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) hlist_for_each_entry_safe(entry, next, &priv->mcast_fwds, next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) /* No timer, LANEv2 7.1.20 and 2.3.5.3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) lec_arp_clear_vccs(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) hlist_del(&entry->next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) lec_arp_put(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508) INIT_HLIST_HEAD(&priv->mcast_fwds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) priv->mcast_vcc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
^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) * Find entry by mac_address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516) static struct lec_arp_table *lec_arp_find(struct lec_priv *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) const unsigned char *mac_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) struct hlist_head *head;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520) struct lec_arp_table *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) pr_debug("%pM\n", mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) head = &priv->lec_arp_tables[HASH(mac_addr[ETH_ALEN - 1])];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) hlist_for_each_entry(entry, head, next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) if (ether_addr_equal(mac_addr, entry->mac_addr))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) return entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) static struct lec_arp_table *make_entry(struct lec_priv *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) const unsigned char *mac_addr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) struct lec_arp_table *to_return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537) to_return = kzalloc(sizeof(struct lec_arp_table), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) if (!to_return)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) ether_addr_copy(to_return->mac_addr, mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541) INIT_HLIST_NODE(&to_return->next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) timer_setup(&to_return->timer, lec_arp_expire_arp, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) to_return->last_used = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544) to_return->priv = priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) skb_queue_head_init(&to_return->tx_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) refcount_set(&to_return->usage, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) return to_return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) /* Arp sent timer expired */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551) static void lec_arp_expire_arp(struct timer_list *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) struct lec_arp_table *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) entry = from_timer(entry, t, timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) pr_debug("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) if (entry->status == ESI_ARP_PENDING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) if (entry->no_tries <= entry->priv->max_retry_count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) if (entry->is_rdesc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) send_to_lecd(entry->priv, l_rdesc_arp_xmt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) entry->mac_addr, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) send_to_lecd(entry->priv, l_arp_xmt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) entry->mac_addr, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) entry->no_tries++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) mod_timer(&entry->timer, jiffies + (1 * HZ));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) /* Unknown/unused vcc expire, remove associated entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) static void lec_arp_expire_vcc(struct timer_list *t)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) struct lec_arp_table *to_remove = from_timer(to_remove, t, timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) struct lec_priv *priv = to_remove->priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) del_timer(&to_remove->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581) pr_debug("%p %p: vpi:%d vci:%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) to_remove, priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) to_remove->vcc ? to_remove->recv_vcc->vpi : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) to_remove->vcc ? to_remove->recv_vcc->vci : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) spin_lock_irqsave(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) hlist_del(&to_remove->next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588) spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) lec_arp_clear_vccs(to_remove);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) lec_arp_put(to_remove);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594) static bool __lec_arp_check_expire(struct lec_arp_table *entry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) unsigned long now,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) struct lec_priv *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) unsigned long time_to_check;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600) if ((entry->flags) & LEC_REMOTE_FLAG && priv->topology_change)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) time_to_check = priv->forward_delay_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) time_to_check = priv->aging_time;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) pr_debug("About to expire: %lx - %lx > %lx\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606) now, entry->last_used, time_to_check);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) if (time_after(now, entry->last_used + time_to_check) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) !(entry->flags & LEC_PERMANENT_FLAG) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) !(entry->mac_addr[0] & 0x01)) { /* LANE2: 7.1.20 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610) /* Remove entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) pr_debug("Entry timed out\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) lec_arp_remove(priv, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) lec_arp_put(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) /* Something else */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) if ((entry->status == ESI_VC_PENDING ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) entry->status == ESI_ARP_PENDING) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) time_after_eq(now, entry->timestamp +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619) priv->max_unknown_frame_time)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) entry->timestamp = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) entry->packets_flooded = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) if (entry->status == ESI_VC_PENDING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623) send_to_lecd(priv, l_svc_setup,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) entry->mac_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) entry->atm_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) if (entry->status == ESI_FLUSH_PENDING &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) time_after_eq(now, entry->timestamp +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) priv->path_switching_delay)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) lec_arp_hold(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) * Expire entries.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) * 1. Re-set timer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) * 2. For each entry, delete entries that have aged past the age limit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) * 3. For each entry, depending on the status of the entry, perform
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) * the following maintenance.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) * a. If status is ESI_VC_PENDING or ESI_ARP_PENDING then if the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) * tick_count is above the max_unknown_frame_time, clear
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) * the tick_count to zero and clear the packets_flooded counter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647) * to zero. This supports the packet rate limit per address
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) * while flooding unknowns.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) * b. If the status is ESI_FLUSH_PENDING and the tick_count is greater
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) * than or equal to the path_switching_delay, change the status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) * to ESI_FORWARD_DIRECT. This causes the flush period to end
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) * regardless of the progress of the flush protocol.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) static void lec_arp_check_expire(struct work_struct *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) struct lec_priv *priv =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) container_of(work, struct lec_priv, lec_arp_work.work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659) struct hlist_node *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) struct lec_arp_table *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) unsigned long now;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) pr_debug("%p\n", priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) now = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) restart:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) spin_lock_irqsave(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) hlist_for_each_entry_safe(entry, next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) &priv->lec_arp_tables[i], next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) if (__lec_arp_check_expire(entry, now, priv)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) struct atm_vcc *vcc = entry->vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) spin_unlock_irqrestore(&priv->lec_arp_lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) while ((skb = skb_dequeue(&entry->tx_wait)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) lec_send(vcc, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) entry->last_used = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) entry->status = ESI_FORWARD_DIRECT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) lec_arp_put(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) goto restart;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) }
^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) spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) schedule_delayed_work(&priv->lec_arp_work, LEC_ARP_REFRESH_INTERVAL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) * Try to find vcc where mac_address is attached.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) static struct atm_vcc *lec_arp_resolve(struct lec_priv *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) const unsigned char *mac_to_find,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698) int is_rdesc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) struct lec_arp_table **ret_entry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) struct lec_arp_table *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) struct atm_vcc *found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) if (mac_to_find[0] & 0x01) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) switch (priv->lane_version) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707) case 1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) return priv->mcast_vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) case 2: /* LANE2 wants arp for multicast addresses */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) if (ether_addr_equal(mac_to_find, bus_mac))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) return priv->mcast_vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) spin_lock_irqsave(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) entry = lec_arp_find(priv, mac_to_find);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721) if (entry) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) if (entry->status == ESI_FORWARD_DIRECT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) /* Connection Ok */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724) entry->last_used = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) lec_arp_hold(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) *ret_entry = entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) found = entry->vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) * If the LE_ARP cache entry is still pending, reset count to 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) * so another LE_ARP request can be made for this frame.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) if (entry->status == ESI_ARP_PENDING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) entry->no_tries = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) * Data direct VC not yet set up, check to see if the unknown
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) * frame count is greater than the limit. If the limit has
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) * not been reached, allow the caller to send packet to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) * BUS.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742) if (entry->status != ESI_FLUSH_PENDING &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) entry->packets_flooded <
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) priv->maximum_unknown_frame_count) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) entry->packets_flooded++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) pr_debug("Flooding..\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747) found = priv->mcast_vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) * We got here because entry->status == ESI_FLUSH_PENDING
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) * or BUS flood limit was reached for an entry which is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) * in ESI_ARP_PENDING or ESI_VC_PENDING state.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) lec_arp_hold(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) *ret_entry = entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) pr_debug("entry->status %d entry->vcc %p\n", entry->status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) entry->vcc);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) found = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) /* No matching entry was found */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) entry = make_entry(priv, mac_to_find);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763) pr_debug("Making entry\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) if (!entry) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) found = priv->mcast_vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) lec_arp_add(priv, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) /* We want arp-request(s) to be sent */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) entry->packets_flooded = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) entry->status = ESI_ARP_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) entry->no_tries = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) entry->last_used = entry->timestamp = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774) entry->is_rdesc = is_rdesc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) if (entry->is_rdesc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) send_to_lecd(priv, l_rdesc_arp_xmt, mac_to_find, NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) send_to_lecd(priv, l_arp_xmt, mac_to_find, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) entry->timer.expires = jiffies + (1 * HZ);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) entry->timer.function = lec_arp_expire_arp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782) add_timer(&entry->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) found = priv->mcast_vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) return found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) lec_addr_delete(struct lec_priv *priv, const unsigned char *atm_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) unsigned long permanent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) struct hlist_node *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) struct lec_arp_table *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) pr_debug("\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) spin_lock_irqsave(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802) for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) hlist_for_each_entry_safe(entry, next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804) &priv->lec_arp_tables[i], next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) (permanent ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) !(entry->flags & LEC_PERMANENT_FLAG))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) lec_arp_remove(priv, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) lec_arp_put(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) return -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) * Notifies: Response to arp_request (atm_addr != NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) lec_arp_update(struct lec_priv *priv, const unsigned char *mac_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824) const unsigned char *atm_addr, unsigned long remoteflag,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) unsigned int targetless_le_arp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828) struct hlist_node *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829) struct lec_arp_table *entry, *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) pr_debug("%smac:%pM\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) (targetless_le_arp) ? "targetless " : "", mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835) spin_lock_irqsave(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) entry = lec_arp_find(priv, mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837) if (entry == NULL && targetless_le_arp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) goto out; /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839) * LANE2: ignore targetless LE_ARPs for which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) * we have no entry in the cache. 7.1.30
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) if (!hlist_empty(&priv->lec_arp_empty_ones)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) hlist_for_each_entry_safe(entry, next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) &priv->lec_arp_empty_ones, next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) if (memcmp(entry->atm_addr, atm_addr, ATM_ESA_LEN) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846) hlist_del(&entry->next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) del_timer(&entry->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) tmp = lec_arp_find(priv, mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) if (tmp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) del_timer(&tmp->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) tmp->status = ESI_FORWARD_DIRECT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) memcpy(tmp->atm_addr, atm_addr, ATM_ESA_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853) tmp->vcc = entry->vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) tmp->old_push = entry->old_push;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) tmp->last_used = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) del_timer(&entry->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857) lec_arp_put(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) entry = tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) entry->status = ESI_FORWARD_DIRECT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861) ether_addr_copy(entry->mac_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863) entry->last_used = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) lec_arp_add(priv, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866) if (remoteflag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) entry->flags |= LEC_REMOTE_FLAG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869) entry->flags &= ~LEC_REMOTE_FLAG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) pr_debug("After update\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) dump_arp_table(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) goto out;
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877) entry = lec_arp_find(priv, mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) if (!entry) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) entry = make_entry(priv, mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) if (!entry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) entry->status = ESI_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883) lec_arp_add(priv, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884) /* Temporary, changes before end of function */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) memcpy(entry->atm_addr, atm_addr, ATM_ESA_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) del_timer(&entry->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889) hlist_for_each_entry(tmp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890) &priv->lec_arp_tables[i], next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) if (entry != tmp &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892) !memcmp(tmp->atm_addr, atm_addr, ATM_ESA_LEN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) /* Vcc to this host exists */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894) if (tmp->status > ESI_VC_PENDING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) * ESI_FLUSH_PENDING,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897) * ESI_FORWARD_DIRECT
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) entry->vcc = tmp->vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900) entry->old_push = tmp->old_push;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) entry->status = tmp->status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907) if (remoteflag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908) entry->flags |= LEC_REMOTE_FLAG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) entry->flags &= ~LEC_REMOTE_FLAG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911) if (entry->status == ESI_ARP_PENDING || entry->status == ESI_UNKNOWN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) entry->status = ESI_VC_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) send_to_lecd(priv, l_svc_setup, entry->mac_addr, atm_addr, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) pr_debug("After update2\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916) dump_arp_table(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) * Notifies: Vcc setup ready
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) lec_vcc_added(struct lec_priv *priv, const struct atmlec_ioc *ioc_data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) struct atm_vcc *vcc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) void (*old_push) (struct atm_vcc *vcc, struct sk_buff *skb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) struct lec_arp_table *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931) int i, found_entry = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933) spin_lock_irqsave(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) /* Vcc for Multicast Forward. No timer, LANEv2 7.1.20 and 2.3.5.3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) if (ioc_data->receive == 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) pr_debug("LEC_ARP: Attaching mcast forward\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938) entry = lec_arp_find(priv, bus_mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939) if (!entry) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) pr_info("LEC_ARP: Multicast entry not found!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) entry->recv_vcc = vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) entry->old_recv_push = old_push;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) entry = make_entry(priv, bus_mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948) if (entry == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) del_timer(&entry->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951) memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) entry->recv_vcc = vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) entry->old_recv_push = old_push;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) hlist_add_head(&entry->next, &priv->mcast_fwds);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956) } else if (ioc_data->receive == 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) * Vcc which we don't want to make default vcc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) * attach it anyway.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961) pr_debug("LEC_ARP:Attaching data direct, not default: %*phN\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962) ATM_ESA_LEN, ioc_data->atm_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963) entry = make_entry(priv, bus_mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) if (entry == NULL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966) memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967) eth_zero_addr(entry->mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968) entry->recv_vcc = vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) entry->old_recv_push = old_push;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970) entry->status = ESI_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971) entry->timer.expires = jiffies + priv->vcc_timeout_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972) entry->timer.function = lec_arp_expire_vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973) hlist_add_head(&entry->next, &priv->lec_no_forward);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974) add_timer(&entry->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) dump_arp_table(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978) pr_debug("LEC_ARP:Attaching data direct, default: %*phN\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979) ATM_ESA_LEN, ioc_data->atm_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) hlist_for_each_entry(entry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982) &priv->lec_arp_tables[i], next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983) if (memcmp
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) (ioc_data->atm_addr, entry->atm_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985) ATM_ESA_LEN) == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986) pr_debug("LEC_ARP: Attaching data direct\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) pr_debug("Currently -> Vcc: %d, Rvcc:%d\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988) entry->vcc ? entry->vcc->vci : 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989) entry->recv_vcc ? entry->recv_vcc->
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990) vci : 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991) found_entry = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) del_timer(&entry->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993) entry->vcc = vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) entry->old_push = old_push;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) if (entry->status == ESI_VC_PENDING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996) if (priv->maximum_unknown_frame_count
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997) == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998) entry->status =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999) ESI_FORWARD_DIRECT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001) entry->timestamp = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002) entry->status =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003) ESI_FLUSH_PENDING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004) #if 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) send_to_lecd(priv, l_flush_xmt,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006) NULL,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007) entry->atm_addr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013) * They were forming a connection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014) * to us, and we to them. Our
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015) * ATM address is numerically lower
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016) * than theirs, so we make connection
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017) * we formed into default VCC (8.1.11).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018) * Connection they made gets torn
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019) * down. This might confuse some
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) * clients. Can be changed if
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021) * someone reports trouble...
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023) ;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) if (found_entry) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029) pr_debug("After vcc was added\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030) dump_arp_table(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034) * Not found, snatch address from first data packet that arrives
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035) * from this vcc
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037) entry = make_entry(priv, bus_mac);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038) if (!entry)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040) entry->vcc = vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041) entry->old_push = old_push;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042) memcpy(entry->atm_addr, ioc_data->atm_addr, ATM_ESA_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) eth_zero_addr(entry->mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044) entry->status = ESI_UNKNOWN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045) hlist_add_head(&entry->next, &priv->lec_arp_empty_ones);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) entry->timer.expires = jiffies + priv->vcc_timeout_period;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) entry->timer.function = lec_arp_expire_vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048) add_timer(&entry->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049) pr_debug("After vcc was added\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050) dump_arp_table(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055) static void lec_flush_complete(struct lec_priv *priv, unsigned long tran_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058) struct lec_arp_table *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) pr_debug("%lx\n", tran_id);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062) restart:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063) spin_lock_irqsave(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064) for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) hlist_for_each_entry(entry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066) &priv->lec_arp_tables[i], next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) if (entry->flush_tran_id == tran_id &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068) entry->status == ESI_FLUSH_PENDING) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) struct sk_buff *skb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070) struct atm_vcc *vcc = entry->vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072) lec_arp_hold(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073) spin_unlock_irqrestore(&priv->lec_arp_lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074) flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) while ((skb = skb_dequeue(&entry->tx_wait)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) lec_send(vcc, skb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077) entry->last_used = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078) entry->status = ESI_FORWARD_DIRECT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079) lec_arp_put(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) pr_debug("LEC_ARP: Flushed\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081) goto restart;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085) spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086) dump_arp_table(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) lec_set_flush_tran_id(struct lec_priv *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091) const unsigned char *atm_addr, unsigned long tran_id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094) struct lec_arp_table *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097) spin_lock_irqsave(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098) for (i = 0; i < LEC_ARP_TABLE_SIZE; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099) hlist_for_each_entry(entry,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100) &priv->lec_arp_tables[i], next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101) if (!memcmp(atm_addr, entry->atm_addr, ATM_ESA_LEN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102) entry->flush_tran_id = tran_id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103) pr_debug("Set flush transaction id to %lx for %p\n",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104) tran_id, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107) spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110) static int lec_mcast_make(struct lec_priv *priv, struct atm_vcc *vcc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113) unsigned char mac_addr[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114) 0xff, 0xff, 0xff, 0xff, 0xff, 0xff
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2115) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2116) struct lec_arp_table *to_add;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2117) struct lec_vcc_priv *vpriv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2118) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2119)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2120) vpriv = kmalloc(sizeof(struct lec_vcc_priv), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2121) if (!vpriv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2122) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2123) vpriv->xoff = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2124) vpriv->old_pop = vcc->pop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2125) vcc->user_back = vpriv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2126) vcc->pop = lec_pop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2127) spin_lock_irqsave(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2128) to_add = make_entry(priv, mac_addr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2129) if (!to_add) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2130) vcc->pop = vpriv->old_pop;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2131) kfree(vpriv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2132) err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2133) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2134) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2135) memcpy(to_add->atm_addr, vcc->remote.sas_addr.prv, ATM_ESA_LEN);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2136) to_add->status = ESI_FORWARD_DIRECT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2137) to_add->flags |= LEC_PERMANENT_FLAG;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2138) to_add->vcc = vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2139) to_add->old_push = vcc->push;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2140) vcc->push = lec_push;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2141) priv->mcast_vcc = vcc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2142) lec_arp_add(priv, to_add);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2143) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2144) spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2145) return err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2146) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2147)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2148) static void lec_vcc_close(struct lec_priv *priv, struct atm_vcc *vcc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2149) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2150) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2151) struct hlist_node *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2152) struct lec_arp_table *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2153) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2155) pr_debug("LEC_ARP: lec_vcc_close vpi:%d vci:%d\n", vcc->vpi, vcc->vci);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2156) dump_arp_table(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2158) spin_lock_irqsave(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2160) for (i = 0; i < LEC_ARP_TABLE_SIZE; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2161) hlist_for_each_entry_safe(entry, next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2162) &priv->lec_arp_tables[i], next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2163) if (vcc == entry->vcc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2164) lec_arp_remove(priv, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2165) lec_arp_put(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2166) if (priv->mcast_vcc == vcc)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2167) priv->mcast_vcc = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2168) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2169) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2172) hlist_for_each_entry_safe(entry, next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2173) &priv->lec_arp_empty_ones, next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2174) if (entry->vcc == vcc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2175) lec_arp_clear_vccs(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2176) del_timer(&entry->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2177) hlist_del(&entry->next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2178) lec_arp_put(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2179) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2180) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2181)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2182) hlist_for_each_entry_safe(entry, next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2183) &priv->lec_no_forward, next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2184) if (entry->recv_vcc == vcc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2185) lec_arp_clear_vccs(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2186) del_timer(&entry->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2187) hlist_del(&entry->next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2188) lec_arp_put(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2192) hlist_for_each_entry_safe(entry, next, &priv->mcast_fwds, next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2193) if (entry->recv_vcc == vcc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2194) lec_arp_clear_vccs(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2195) /* No timer, LANEv2 7.1.20 and 2.3.5.3 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2196) hlist_del(&entry->next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2197) lec_arp_put(entry);
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2201) spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2202) dump_arp_table(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2203) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2204)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2205) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2206) lec_arp_check_empties(struct lec_priv *priv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2207) struct atm_vcc *vcc, struct sk_buff *skb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2208) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2209) unsigned long flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2210) struct hlist_node *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2211) struct lec_arp_table *entry, *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2212) struct lecdatahdr_8023 *hdr = (struct lecdatahdr_8023 *)skb->data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2213) unsigned char *src = hdr->h_source;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2214)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2215) spin_lock_irqsave(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2216) hlist_for_each_entry_safe(entry, next,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2217) &priv->lec_arp_empty_ones, next) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2218) if (vcc == entry->vcc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2219) del_timer(&entry->timer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2220) ether_addr_copy(entry->mac_addr, src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2221) entry->status = ESI_FORWARD_DIRECT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2222) entry->last_used = jiffies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2223) /* We might have got an entry */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2224) tmp = lec_arp_find(priv, src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2225) if (tmp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2226) lec_arp_remove(priv, tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2227) lec_arp_put(tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2228) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2229) hlist_del(&entry->next);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2230) lec_arp_add(priv, entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2231) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2232) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2234) pr_debug("LEC_ARP: Arp_check_empties: entry not found!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2235) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2236) spin_unlock_irqrestore(&priv->lec_arp_lock, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2237) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2239) MODULE_LICENSE("GPL");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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