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[SCSI] libfc: Honor LS_ACC response codes for PRLI

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As per FC-LS Rev 1.62 table 46, response codes are handled as follows:

1. If the Req executed is true, PRLI is accepted.
2. If Req executed is not set,  if resp code is 5,
   PRLI is not retried and port is logged out.
3. If resp code is anything apart from 1 or 5, PRLI is retired
   upto max retry count.

Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Bhanu Prakash Gollapudi 2010-06-11 16:43:54 -07:00 committed by James Bottomley
parent 292e40b956
commit 618461c02b
1 changed files with 19 additions and 4 deletions
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23
drivers/scsi/libfc/fc_rport.c
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@ -698,6 +698,7 @@ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp,
u32 roles = FC_RPORT_ROLE_UNKNOWN;
u32 fcp_parm = 0;
u8 op;
u8 resp_code = 0;
mutex_lock(&rdata->rp_mutex);
@ -722,11 +723,25 @@ static void fc_rport_prli_resp(struct fc_seq *sp, struct fc_frame *fp,
op = fc_frame_payload_op(fp);
if (op == ELS_LS_ACC) {
pp = fc_frame_payload_get(fp, sizeof(*pp));
if (pp && pp->prli.prli_spp_len >= sizeof(pp->spp)) {
fcp_parm = ntohl(pp->spp.spp_params);
if (fcp_parm & FCP_SPPF_RETRY)
rdata->flags |= FC_RP_FLAGS_RETRY;
if (!pp)
goto out;
resp_code = (pp->spp.spp_flags & FC_SPP_RESP_MASK);
FC_RPORT_DBG(rdata, "PRLI spp_flags = 0x%x\n",
pp->spp.spp_flags);
if (resp_code != FC_SPP_RESP_ACK) {
if (resp_code == FC_SPP_RESP_CONF)
fc_rport_error(rdata, fp);
else
fc_rport_error_retry(rdata, fp);
goto out;
}
if (pp->prli.prli_spp_len < sizeof(pp->spp))
goto out;
fcp_parm = ntohl(pp->spp.spp_params);
if (fcp_parm & FCP_SPPF_RETRY)
rdata->flags |= FC_RP_FLAGS_RETRY;
rdata->supported_classes = FC_COS_CLASS3;
if (fcp_parm & FCP_SPPF_INIT_FCN)