^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright(c) 2008 Intel Corporation. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Maintained at www.Open-FCoE.org
^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) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) * Provide interface to send ELS/CT FC frames
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/export.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <asm/unaligned.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <scsi/fc/fc_gs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <scsi/fc/fc_ns.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <scsi/fc/fc_els.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <scsi/libfc.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <scsi/fc_encode.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "fc_libfc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) * fc_elsct_send() - Send an ELS or CT frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) * @lport: The local port to send the frame on
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) * @did: The destination ID for the frame
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) * @fp: The frame to be sent
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) * @op: The operational code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) * @resp: The callback routine when the response is received
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * @arg: The argument to pass to the response callback routine
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * @timer_msec: The timeout period for the frame (in msecs)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) struct fc_seq *fc_elsct_send(struct fc_lport *lport, u32 did,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct fc_frame *fp, unsigned int op,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) void (*resp)(struct fc_seq *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct fc_frame *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) void *),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) void *arg, u32 timer_msec)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) enum fc_rctl r_ctl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) enum fc_fh_type fh_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) int rc;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) /* ELS requests */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) if ((op >= ELS_LS_RJT) && (op <= ELS_AUTH_ELS))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) rc = fc_els_fill(lport, did, fp, op, &r_ctl, &fh_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) /* CT requests */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) rc = fc_ct_fill(lport, did, fp, op, &r_ctl, &fh_type, &did);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) if (rc) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) fc_frame_free(fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) fc_fill_fc_hdr(fp, r_ctl, did, lport->port_id, fh_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) FC_FCTL_REQ, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) return fc_exch_seq_send(lport, fp, resp, NULL, arg, timer_msec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) EXPORT_SYMBOL(fc_elsct_send);
^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) * fc_elsct_init() - Initialize the ELS/CT layer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) * @lport: The local port to initialize the ELS/CT layer for
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) int fc_elsct_init(struct fc_lport *lport)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) if (!lport->tt.elsct_send)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) lport->tt.elsct_send = fc_elsct_send;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) EXPORT_SYMBOL(fc_elsct_init);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) * fc_els_resp_type() - Return a string describing the ELS response
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) * @fp: The frame pointer or possible error code
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) const char *fc_els_resp_type(struct fc_frame *fp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) const char *msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) struct fc_frame_header *fh;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) struct fc_ct_hdr *ct;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) if (IS_ERR(fp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) switch (-PTR_ERR(fp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) case FC_NO_ERR:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) msg = "response no error";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) case FC_EX_TIMEOUT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) msg = "response timeout";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) case FC_EX_CLOSED:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) msg = "response closed";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) msg = "response unknown error";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) fh = fc_frame_header_get(fp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) switch (fh->fh_type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) case FC_TYPE_ELS:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) switch (fc_frame_payload_op(fp)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) case ELS_LS_ACC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) msg = "accept";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) case ELS_LS_RJT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) msg = "reject";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) msg = "response unknown ELS";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) case FC_TYPE_CT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) ct = fc_frame_payload_get(fp, sizeof(*ct));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (ct) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) switch (ntohs(ct->ct_cmd)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) case FC_FS_ACC:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) msg = "CT accept";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) case FC_FS_RJT:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) msg = "CT reject";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) msg = "response unknown CT";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) msg = "short CT response";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) default:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) msg = "response not ELS or CT";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) return msg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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