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scsi: libfc: Implement RTV responder 

The libfc stack generates an RTV request, so we should be implementing
an RTV responder, too.

Signed-off-by: Hannes Reinecke <hare@suse.com>
Acked-by: Johannes Thumshirn <jth@kernel.org>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Hannes Reinecke 2016-10-13 15:10:45 +02:00 committed by Martin K. Petersen
parent 9f9504a7cd
commit 7c5a51b8f8
1 changed files with 40 additions and 1 deletions
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41
drivers/scsi/libfc/fc_rport.c
View File

@ -1268,7 +1268,7 @@ static void fc_rport_enter_prli(struct fc_rport_priv *rdata)
}
/**
* fc_rport_els_rtv_resp() - Handler for Request Timeout Value (RTV) responses
* fc_rport_rtv_resp() - Handler for Request Timeout Value (RTV) responses
* @sp: The sequence the RTV was on
* @fp: The RTV response frame
* @rdata_arg: The remote port that sent the RTV response
@ -1373,6 +1373,41 @@ static void fc_rport_enter_rtv(struct fc_rport_priv *rdata)
}
}
/**
* fc_rport_recv_rtv_req() - Handler for Read Timeout Value (RTV) requests
* @rdata: The remote port that sent the RTV request
* @in_fp: The RTV request frame
*
* Locking Note: Called with the lport and rport locks held.
*/
static void fc_rport_recv_rtv_req(struct fc_rport_priv *rdata,
struct fc_frame *in_fp)
{
struct fc_lport *lport = rdata->local_port;
struct fc_frame *fp;
struct fc_els_rtv_acc *rtv;
struct fc_seq_els_data rjt_data;
FC_RPORT_DBG(rdata, "Received RTV request\n");
fp = fc_frame_alloc(lport, sizeof(*rtv));
if (!fp) {
rjt_data.reason = ELS_RJT_UNAB;
rjt_data.reason = ELS_EXPL_INSUF_RES;
lport->tt.seq_els_rsp_send(in_fp, ELS_LS_RJT, &rjt_data);
goto drop;
}
rtv = fc_frame_payload_get(fp, sizeof(*rtv));
rtv->rtv_cmd = ELS_LS_ACC;
rtv->rtv_r_a_tov = htonl(lport->r_a_tov);
rtv->rtv_e_d_tov = htonl(lport->e_d_tov);
rtv->rtv_toq = 0;
fc_fill_reply_hdr(fp, in_fp, FC_RCTL_ELS_REP, 0);
lport->tt.frame_send(lport, fp);
drop:
fc_frame_free(in_fp);
}
/**
* fc_rport_logo_resp() - Handler for logout (LOGO) responses
* @sp: The sequence the LOGO was on
@ -1678,6 +1713,9 @@ static void fc_rport_recv_els_req(struct fc_lport *lport, struct fc_frame *fp)
case ELS_RLS:
fc_rport_recv_rls_req(rdata, fp);
break;
case ELS_RTV:
fc_rport_recv_rtv_req(rdata, fp);
break;
default:
fc_frame_free(fp); /* can't happen */
break;
@ -1729,6 +1767,7 @@ static void fc_rport_recv_req(struct fc_lport *lport, struct fc_frame *fp)
case ELS_RRQ:
case ELS_REC:
case ELS_RLS:
case ELS_RTV:
fc_rport_recv_els_req(lport, fp);
break;
default: