diff options
author | Chris Leech <christopher.leech@intel.com> | 2009-11-03 11:47:01 -0800 |
---|---|---|
committer | James Bottomley <James.Bottomley@suse.de> | 2009-12-04 12:01:02 -0600 |
commit | c9866a548024c33e30f35a14bbcb71ba78266383 (patch) | |
tree | 99c68b4f8292ccffd39645424cdd0965a867e161 /drivers/scsi/libfc/fc_lport.c | |
parent | 5baa17c3e66fc2e414f501b2dd59b962dfc64919 (diff) |
[SCSI] libfc: Register Symbolic Port Name (RSPN_ID)
Register the fc_host symbolic name as the symbolic port name
with the fabric name server.
Signed-off-by: Chris Leech <christopher.leech@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/scsi/libfc/fc_lport.c')
-rw-r--r-- | drivers/scsi/libfc/fc_lport.c | 90 |
1 files changed, 90 insertions, 0 deletions
diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c index cc389c03f69..28a35da1493 100644 --- a/drivers/scsi/libfc/fc_lport.c +++ b/drivers/scsi/libfc/fc_lport.c @@ -110,6 +110,7 @@ static void fc_lport_enter_flogi(struct fc_lport *); static void fc_lport_enter_dns(struct fc_lport *); static void fc_lport_enter_rnn_id(struct fc_lport *); static void fc_lport_enter_rsnn_nn(struct fc_lport *); +static void fc_lport_enter_rspn_id(struct fc_lport *); static void fc_lport_enter_rft_id(struct fc_lport *); static void fc_lport_enter_scr(struct fc_lport *); static void fc_lport_enter_ready(struct fc_lport *); @@ -121,6 +122,7 @@ static const char *fc_lport_state_names[] = { [LPORT_ST_DNS] = "dNS", [LPORT_ST_RNN_ID] = "RNN_ID", [LPORT_ST_RSNN_NN] = "RSNN_NN", + [LPORT_ST_RSPN_ID] = "RSPN_ID", [LPORT_ST_RFT_ID] = "RFT_ID", [LPORT_ST_SCR] = "SCR", [LPORT_ST_READY] = "Ready", @@ -969,6 +971,7 @@ static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp) case LPORT_ST_RESET: case LPORT_ST_RNN_ID: case LPORT_ST_RSNN_NN: + case LPORT_ST_RSPN_ID: case LPORT_ST_RFT_ID: case LPORT_ST_SCR: case LPORT_ST_DNS: @@ -1036,6 +1039,59 @@ err: } /** + * fc_lport_rspn_id_resp() - Handle response to Register Symbolic Port Name + * by ID (RSPN_ID) request + * @sp: current sequence in RSPN_ID exchange + * @fp: response frame + * @lp_arg: Fibre Channel host port instance + * + * Locking Note: This function will be called without the lport lock + * held, but it will lock, call an _enter_* function or fc_lport_error + * and then unlock the lport. + */ +static void fc_lport_rspn_id_resp(struct fc_seq *sp, struct fc_frame *fp, + void *lp_arg) +{ + struct fc_lport *lport = lp_arg; + struct fc_frame_header *fh; + struct fc_ct_hdr *ct; + + FC_LPORT_DBG(lport, "Received a RSPN_ID %s\n", fc_els_resp_type(fp)); + + if (fp == ERR_PTR(-FC_EX_CLOSED)) + return; + + mutex_lock(&lport->lp_mutex); + + if (lport->state != LPORT_ST_RSPN_ID) { + FC_LPORT_DBG(lport, "Received a RSPN_ID response, but in state " + "%s\n", fc_lport_state(lport)); + if (IS_ERR(fp)) + goto err; + goto out; + } + + if (IS_ERR(fp)) { + fc_lport_error(lport, fp); + goto err; + } + + fh = fc_frame_header_get(fp); + ct = fc_frame_payload_get(fp, sizeof(*ct)); + if (fh && ct && fh->fh_type == FC_TYPE_CT && + ct->ct_fs_type == FC_FST_DIR && + ct->ct_fs_subtype == FC_NS_SUBTYPE && + ntohs(ct->ct_cmd) == FC_FS_ACC) + fc_lport_enter_rspn_id(lport); + else + fc_lport_error(lport, fp); + +out: + fc_frame_free(fp); +err: + mutex_unlock(&lport->lp_mutex); +} +/** * fc_lport_rsnn_nn_resp() - Handle response to Register Symbolic Node Name * by Node Name (RSNN_NN) request * @sp: current sequence in RSNN_NN exchange @@ -1261,6 +1317,37 @@ static void fc_lport_enter_rft_id(struct fc_lport *lport) } /** + * fc_rport_enter_rspn_id() - Register symbolic port name with the name server + * @lport: Fibre Channel local port to register + * + * Locking Note: The lport lock is expected to be held before calling + * this routine. + */ +static void fc_lport_enter_rspn_id(struct fc_lport *lport) +{ + struct fc_frame *fp; + size_t len; + + FC_LPORT_DBG(lport, "Entered RSPN_ID state from %s state\n", + fc_lport_state(lport)); + + fc_lport_state_enter(lport, LPORT_ST_RSPN_ID); + + len = strnlen(fc_host_symbolic_name(lport->host), 255); + fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) + + sizeof(struct fc_ns_rspn) + len); + if (!fp) { + fc_lport_error(lport, fp); + return; + } + + if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RSPN_ID, + fc_lport_rspn_id_resp, + lport, lport->e_d_tov)) + fc_lport_error(lport, fp); +} + +/** * fc_rport_enter_rsnn_nn() - Register symbolic node name with the name server * @lport: Fibre Channel local port to register * @@ -1387,6 +1474,9 @@ static void fc_lport_timeout(struct work_struct *work) case LPORT_ST_RSNN_NN: fc_lport_enter_rsnn_nn(lport); break; + case LPORT_ST_RSPN_ID: + fc_lport_enter_rspn_id(lport); + break; case LPORT_ST_RFT_ID: fc_lport_enter_rft_id(lport); break; |