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path: root/drivers/scsi/libfc/fc_elsct.c
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Diffstat (limited to 'drivers/scsi/libfc/fc_elsct.c')
-rw-r--r--drivers/scsi/libfc/fc_elsct.c79
1 files changed, 60 insertions, 19 deletions
diff --git a/drivers/scsi/libfc/fc_elsct.c b/drivers/scsi/libfc/fc_elsct.c
index 5cfa68732e9d..53748724f2c5 100644
--- a/drivers/scsi/libfc/fc_elsct.c
+++ b/drivers/scsi/libfc/fc_elsct.c
@@ -28,17 +28,22 @@
#include <scsi/libfc.h>
#include <scsi/fc_encode.h>
-/*
- * fc_elsct_send - sends ELS/CT frame
+/**
+ * fc_elsct_send() - Send an ELS or CT frame
+ * @lport: The local port to send the frame on
+ * @did: The destination ID for the frame
+ * @fp: The frame to be sent
+ * @op: The operational code
+ * @resp: The callback routine when the response is received
+ * @arg: The argument to pass to the response callback routine
+ * @timer_msec: The timeout period for the frame (in msecs)
*/
-static struct fc_seq *fc_elsct_send(struct fc_lport *lport,
- u32 did,
- struct fc_frame *fp,
- unsigned int op,
- void (*resp)(struct fc_seq *,
- struct fc_frame *fp,
- void *arg),
- void *arg, u32 timer_msec)
+struct fc_seq *fc_elsct_send(struct fc_lport *lport, u32 did,
+ struct fc_frame *fp, unsigned int op,
+ void (*resp)(struct fc_seq *,
+ struct fc_frame *,
+ void *),
+ void *arg, u32 timer_msec)
{
enum fc_rctl r_ctl;
enum fc_fh_type fh_type;
@@ -53,15 +58,22 @@ static struct fc_seq *fc_elsct_send(struct fc_lport *lport,
did = FC_FID_DIR_SERV;
}
- if (rc)
+ if (rc) {
+ fc_frame_free(fp);
return NULL;
+ }
fc_fill_fc_hdr(fp, r_ctl, did, fc_host_port_id(lport->host), fh_type,
FC_FC_FIRST_SEQ | FC_FC_END_SEQ | FC_FC_SEQ_INIT, 0);
return lport->tt.exch_seq_send(lport, fp, resp, NULL, arg, timer_msec);
}
+EXPORT_SYMBOL(fc_elsct_send);
+/**
+ * fc_elsct_init() - Initialize the ELS/CT layer
+ * @lport: The local port to initialize the ELS/CT layer for
+ */
int fc_elsct_init(struct fc_lport *lport)
{
if (!lport->tt.elsct_send)
@@ -72,12 +84,15 @@ int fc_elsct_init(struct fc_lport *lport)
EXPORT_SYMBOL(fc_elsct_init);
/**
- * fc_els_resp_type() - return string describing ELS response for debug.
- * @fp: frame pointer with possible error code.
+ * fc_els_resp_type() - Return a string describing the ELS response
+ * @fp: The frame pointer or possible error code
*/
const char *fc_els_resp_type(struct fc_frame *fp)
{
const char *msg;
+ struct fc_frame_header *fh;
+ struct fc_ct_hdr *ct;
+
if (IS_ERR(fp)) {
switch (-PTR_ERR(fp)) {
case FC_NO_ERR:
@@ -94,15 +109,41 @@ const char *fc_els_resp_type(struct fc_frame *fp)
break;
}
} else {
- switch (fc_frame_payload_op(fp)) {
- case ELS_LS_ACC:
- msg = "accept";
+ fh = fc_frame_header_get(fp);
+ switch (fh->fh_type) {
+ case FC_TYPE_ELS:
+ switch (fc_frame_payload_op(fp)) {
+ case ELS_LS_ACC:
+ msg = "accept";
+ break;
+ case ELS_LS_RJT:
+ msg = "reject";
+ break;
+ default:
+ msg = "response unknown ELS";
+ break;
+ }
break;
- case ELS_LS_RJT:
- msg = "reject";
+ case FC_TYPE_CT:
+ ct = fc_frame_payload_get(fp, sizeof(*ct));
+ if (ct) {
+ switch (ntohs(ct->ct_cmd)) {
+ case FC_FS_ACC:
+ msg = "CT accept";
+ break;
+ case FC_FS_RJT:
+ msg = "CT reject";
+ break;
+ default:
+ msg = "response unknown CT";
+ break;
+ }
+ } else {
+ msg = "short CT response";
+ }
break;
default:
- msg = "response unknown ELS";
+ msg = "response not ELS or CT";
break;
}
}