Commit 7c5a51b8 authored by Hannes Reinecke's avatar Hannes Reinecke Committed by Martin K. Petersen
Browse files

scsi: libfc: Implement RTV responder 



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

Signed-off-by: default avatarHannes Reinecke <hare@suse.com>
Acked-by: default avatarJohannes Thumshirn <jth@kernel.org>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 9f9504a7

drivers/scsi/libfc/fc_rport.c

+40 −1
Original line number Diff line number Diff line
@@ -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: