From 7c5a51b8f82fcfba1925fa64f08413c8258590d2 Mon Sep 17 00:00:00 2001 From: Hannes Reinecke Date: Thu, 13 Oct 2016 15:10:45 +0200 Subject: 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 Acked-by: Johannes Thumshirn Signed-off-by: Martin K. Petersen --- drivers/scsi/libfc/fc_rport.c | 41 ++++++++++++++++++++++++++++++++++++++++- 1 file changed, 40 insertions(+), 1 deletion(-) (limited to 'drivers/scsi/libfc') diff --git a/drivers/scsi/libfc/fc_rport.c b/drivers/scsi/libfc/fc_rport.c index d2d8607ff6a0..426c39989952 100644 --- a/drivers/scsi/libfc/fc_rport.c +++ b/drivers/scsi/libfc/fc_rport.c @@ -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: -- cgit v1.2.3