* at the same time.
*
* When discovery succeeds or fails a callback is made to the lport as
- * notification. Currently, succesful discovery causes the lport to take no
+ * notification. Currently, successful discovery causes the lport to take no
* action. A failure will cause the lport to reset. There is likely a circular
* locking problem with this implementation.
*/
*/
#include <linux/timer.h>
+#include <linux/slab.h>
#include <asm/unaligned.h>
#include <scsi/fc/fc_gs.h>
#include <scsi/libfc.h>
#include <scsi/fc_encode.h>
+#include <linux/scatterlist.h>
+
+#include "fc_libfc.h"
/* Fabric IDs to use for point-to-point mode, chosen on whims. */
#define FC_LOCAL_PTP_FID_LO 0x010101
static void fc_lport_enter_reset(struct fc_lport *);
static void fc_lport_enter_flogi(struct fc_lport *);
static void fc_lport_enter_dns(struct fc_lport *);
-static void fc_lport_enter_rpn_id(struct fc_lport *);
-static void fc_lport_enter_rft_id(struct fc_lport *);
+static void fc_lport_enter_ns(struct fc_lport *, enum fc_lport_state);
static void fc_lport_enter_scr(struct fc_lport *);
static void fc_lport_enter_ready(struct fc_lport *);
static void fc_lport_enter_logo(struct fc_lport *);
[LPORT_ST_DISABLED] = "disabled",
[LPORT_ST_FLOGI] = "FLOGI",
[LPORT_ST_DNS] = "dNS",
- [LPORT_ST_RPN_ID] = "RPN_ID",
+ [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_RFF_ID] = "RFF_ID",
[LPORT_ST_SCR] = "SCR",
[LPORT_ST_READY] = "Ready",
[LPORT_ST_LOGO] = "LOGO",
[LPORT_ST_RESET] = "reset",
};
+/**
+ * struct fc_bsg_info - FC Passthrough managemet structure
+ * @job: The passthrough job
+ * @lport: The local port to pass through a command
+ * @rsp_code: The expected response code
+ * @sg: job->reply_payload.sg_list
+ * @nents: job->reply_payload.sg_cnt
+ * @offset: The offset into the response data
+ */
+struct fc_bsg_info {
+ struct fc_bsg_job *job;
+ struct fc_lport *lport;
+ u16 rsp_code;
+ struct scatterlist *sg;
+ u32 nents;
+ size_t offset;
+};
+
+/**
+ * fc_frame_drop() - Dummy frame handler
+ * @lport: The local port the frame was received on
+ * @fp: The received frame
+ */
static int fc_frame_drop(struct fc_lport *lport, struct fc_frame *fp)
{
fc_frame_free(fp);
struct fc_rport_priv *rdata,
enum fc_rport_event event)
{
- FC_LPORT_DBG(lport, "Received a %d event for port (%6x)\n", event,
+ FC_LPORT_DBG(lport, "Received a %d event for port (%6.6x)\n", event,
rdata->ids.port_id);
mutex_lock(&lport->lp_mutex);
switch (event) {
case RPORT_EV_READY:
if (lport->state == LPORT_ST_DNS) {
- lport->dns_rp = rdata;
- fc_lport_enter_rpn_id(lport);
+ lport->dns_rdata = rdata;
+ fc_lport_enter_ns(lport, LPORT_ST_RNN_ID);
} else {
FC_LPORT_DBG(lport, "Received an READY event "
- "on port (%6x) for the directory "
+ "on port (%6.6x) for the directory "
"server, but the lport is not "
"in the DNS state, it's in the "
"%d state", rdata->ids.port_id,
case RPORT_EV_LOGO:
case RPORT_EV_FAILED:
case RPORT_EV_STOP:
- lport->dns_rp = NULL;
+ lport->dns_rdata = NULL;
break;
case RPORT_EV_NONE:
break;
/**
* fc_lport_ptp_setup() - Create an rport for point-to-point mode
- * @lport: The lport to attach the ptp rport to
- * @fid: The FID of the ptp rport
+ * @lport: The lport to attach the ptp rport to
+ * @remote_fid: The FID of the ptp rport
* @remote_wwpn: The WWPN of the ptp rport
* @remote_wwnn: The WWNN of the ptp rport
*/
u64 remote_wwnn)
{
mutex_lock(&lport->disc.disc_mutex);
- if (lport->ptp_rp)
- lport->tt.rport_logoff(lport->ptp_rp);
- lport->ptp_rp = lport->tt.rport_create(lport, remote_fid);
- lport->ptp_rp->ids.port_name = remote_wwpn;
- lport->ptp_rp->ids.node_name = remote_wwnn;
+ if (lport->ptp_rdata) {
+ lport->tt.rport_logoff(lport->ptp_rdata);
+ kref_put(&lport->ptp_rdata->kref, lport->tt.rport_destroy);
+ }
+ lport->ptp_rdata = lport->tt.rport_create(lport, remote_fid);
+ kref_get(&lport->ptp_rdata->kref);
+ lport->ptp_rdata->ids.port_name = remote_wwpn;
+ lport->ptp_rdata->ids.node_name = remote_wwnn;
mutex_unlock(&lport->disc.disc_mutex);
- lport->tt.rport_login(lport->ptp_rp);
+ lport->tt.rport_login(lport->ptp_rdata);
fc_lport_enter_ready(lport);
}
-void fc_get_host_port_type(struct Scsi_Host *shost)
-{
- /* TODO - currently just NPORT */
- fc_host_port_type(shost) = FC_PORTTYPE_NPORT;
-}
-EXPORT_SYMBOL(fc_get_host_port_type);
-
+/**
+ * fc_get_host_port_state() - Return the port state of the given Scsi_Host
+ * @shost: The SCSI host whose port state is to be determined
+ */
void fc_get_host_port_state(struct Scsi_Host *shost)
{
- struct fc_lport *lp = shost_priv(shost);
+ struct fc_lport *lport = shost_priv(shost);
- if (lp->link_up)
- fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
+ mutex_lock(&lport->lp_mutex);
+ if (!lport->link_up)
+ fc_host_port_state(shost) = FC_PORTSTATE_LINKDOWN;
else
- fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
+ switch (lport->state) {
+ case LPORT_ST_READY:
+ fc_host_port_state(shost) = FC_PORTSTATE_ONLINE;
+ break;
+ default:
+ fc_host_port_state(shost) = FC_PORTSTATE_OFFLINE;
+ }
+ mutex_unlock(&lport->lp_mutex);
}
EXPORT_SYMBOL(fc_get_host_port_state);
+/**
+ * fc_get_host_speed() - Return the speed of the given Scsi_Host
+ * @shost: The SCSI host whose port speed is to be determined
+ */
void fc_get_host_speed(struct Scsi_Host *shost)
{
struct fc_lport *lport = shost_priv(shost);
}
EXPORT_SYMBOL(fc_get_host_speed);
+/**
+ * fc_get_host_stats() - Return the Scsi_Host's statistics
+ * @shost: The SCSI host whose statistics are to be returned
+ */
struct fc_host_statistics *fc_get_host_stats(struct Scsi_Host *shost)
{
struct fc_host_statistics *fcoe_stats;
- struct fc_lport *lp = shost_priv(shost);
+ struct fc_lport *lport = shost_priv(shost);
struct timespec v0, v1;
unsigned int cpu;
- fcoe_stats = &lp->host_stats;
+ fcoe_stats = &lport->host_stats;
memset(fcoe_stats, 0, sizeof(struct fc_host_statistics));
jiffies_to_timespec(jiffies, &v0);
- jiffies_to_timespec(lp->boot_time, &v1);
+ jiffies_to_timespec(lport->boot_time, &v1);
fcoe_stats->seconds_since_last_reset = (v0.tv_sec - v1.tv_sec);
for_each_possible_cpu(cpu) {
struct fcoe_dev_stats *stats;
- stats = per_cpu_ptr(lp->dev_stats, cpu);
+ stats = per_cpu_ptr(lport->dev_stats, cpu);
fcoe_stats->tx_frames += stats->TxFrames;
fcoe_stats->tx_words += stats->TxWords;
}
EXPORT_SYMBOL(fc_get_host_stats);
-/*
- * Fill in FLOGI command for request.
+/**
+ * fc_lport_flogi_fill() - Fill in FLOGI command for request
+ * @lport: The local port the FLOGI is for
+ * @flogi: The FLOGI command
+ * @op: The opcode
*/
-static void
-fc_lport_flogi_fill(struct fc_lport *lport, struct fc_els_flogi *flogi,
- unsigned int op)
+static void fc_lport_flogi_fill(struct fc_lport *lport,
+ struct fc_els_flogi *flogi,
+ unsigned int op)
{
struct fc_els_csp *sp;
struct fc_els_cssp *cp;
}
}
-/*
- * Add a supported FC-4 type.
+/**
+ * fc_lport_add_fc4_type() - Add a supported FC-4 type to a local port
+ * @lport: The local port to add a new FC-4 type to
+ * @type: The new FC-4 type
*/
static void fc_lport_add_fc4_type(struct fc_lport *lport, enum fc_fh_type type)
{
/**
* fc_lport_recv_rlir_req() - Handle received Registered Link Incident Report.
+ * @sp: The sequence in the RLIR exchange
+ * @fp: The RLIR request frame
* @lport: Fibre Channel local port recieving the RLIR
- * @sp: current sequence in the RLIR exchange
- * @fp: RLIR request frame
*
- * Locking Note: The lport lock is exected to be held before calling
+ * Locking Note: The lport lock is expected to be held before calling
* this function.
*/
static void fc_lport_recv_rlir_req(struct fc_seq *sp, struct fc_frame *fp,
/**
* fc_lport_recv_echo_req() - Handle received ECHO request
- * @lport: Fibre Channel local port recieving the ECHO
- * @sp: current sequence in the ECHO exchange
- * @fp: ECHO request frame
+ * @sp: The sequence in the ECHO exchange
+ * @fp: ECHO request frame
+ * @lport: The local port recieving the ECHO
*
- * Locking Note: The lport lock is exected to be held before calling
+ * Locking Note: The lport lock is expected to be held before calling
* this function.
*/
static void fc_lport_recv_echo_req(struct fc_seq *sp, struct fc_frame *in_fp,
void *dp;
u32 f_ctl;
- FC_LPORT_DBG(lport, "Received RLIR request while in state %s\n",
+ FC_LPORT_DBG(lport, "Received ECHO request while in state %s\n",
fc_lport_state(lport));
len = fr_len(in_fp) - sizeof(struct fc_frame_header);
if (fp) {
dp = fc_frame_payload_get(fp, len);
memcpy(dp, pp, len);
- *((u32 *)dp) = htonl(ELS_LS_ACC << 24);
+ *((__be32 *)dp) = htonl(ELS_LS_ACC << 24);
sp = lport->tt.seq_start_next(sp);
f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ;
fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid,
}
/**
- * fc_lport_recv_echo_req() - Handle received Request Node ID data request
- * @lport: Fibre Channel local port recieving the RNID
- * @sp: current sequence in the RNID exchange
- * @fp: RNID request frame
+ * fc_lport_recv_rnid_req() - Handle received Request Node ID data request
+ * @sp: The sequence in the RNID exchange
+ * @fp: The RNID request frame
+ * @lport: The local port recieving the RNID
*
- * Locking Note: The lport lock is exected to be held before calling
+ * Locking Note: The lport lock is expected to be held before calling
* this function.
*/
static void fc_lport_recv_rnid_req(struct fc_seq *sp, struct fc_frame *in_fp,
}
/**
- * fc_lport_recv_adisc_req() - Handle received Address Discovery Request
- * @lport: Fibre Channel local port recieving the ADISC
- * @sp: current sequence in the ADISC exchange
- * @fp: ADISC request frame
- *
- * Locking Note: The lport lock is expected to be held before calling
- * this function.
- */
-static void fc_lport_recv_adisc_req(struct fc_seq *sp, struct fc_frame *in_fp,
- struct fc_lport *lport)
-{
- struct fc_frame *fp;
- struct fc_exch *ep = fc_seq_exch(sp);
- struct fc_els_adisc *req, *rp;
- struct fc_seq_els_data rjt_data;
- size_t len;
- u32 f_ctl;
-
- FC_LPORT_DBG(lport, "Received ADISC request while in state %s\n",
- fc_lport_state(lport));
-
- req = fc_frame_payload_get(in_fp, sizeof(*req));
- if (!req) {
- rjt_data.fp = NULL;
- rjt_data.reason = ELS_RJT_LOGIC;
- rjt_data.explan = ELS_EXPL_NONE;
- lport->tt.seq_els_rsp_send(sp, ELS_LS_RJT, &rjt_data);
- } else {
- len = sizeof(*rp);
- fp = fc_frame_alloc(lport, len);
- if (fp) {
- rp = fc_frame_payload_get(fp, len);
- memset(rp, 0, len);
- rp->adisc_cmd = ELS_LS_ACC;
- rp->adisc_wwpn = htonll(lport->wwpn);
- rp->adisc_wwnn = htonll(lport->wwnn);
- hton24(rp->adisc_port_id,
- fc_host_port_id(lport->host));
- sp = lport->tt.seq_start_next(sp);
- f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ;
- f_ctl |= FC_FC_END_SEQ | FC_FC_SEQ_INIT;
- fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid,
- FC_TYPE_ELS, f_ctl, 0);
- lport->tt.seq_send(lport, sp, fp);
- }
- }
- fc_frame_free(in_fp);
-}
-
-/**
* fc_lport_recv_logo_req() - Handle received fabric LOGO request
- * @lport: Fibre Channel local port recieving the LOGO
- * @sp: current sequence in the LOGO exchange
- * @fp: LOGO request frame
+ * @sp: The sequence in the LOGO exchange
+ * @fp: The LOGO request frame
+ * @lport: The local port recieving the LOGO
*
* Locking Note: The lport lock is exected to be held before calling
* this function.
/**
* fc_fabric_login() - Start the lport state machine
- * @lport: The lport that should log into the fabric
+ * @lport: The local port that should log into the fabric
*
* Locking Note: This function should not be called
* with the lport lock held.
int rc = -1;
mutex_lock(&lport->lp_mutex);
- if (lport->state == LPORT_ST_DISABLED) {
+ if (lport->state == LPORT_ST_DISABLED ||
+ lport->state == LPORT_ST_LOGO) {
+ fc_lport_state_enter(lport, LPORT_ST_RESET);
fc_lport_enter_reset(lport);
rc = 0;
}
EXPORT_SYMBOL(fc_fabric_login);
/**
- * fc_linkup() - Handler for transport linkup events
+ * __fc_linkup() - Handler for transport linkup events
* @lport: The lport whose link is up
+ *
+ * Locking: must be called with the lp_mutex held
*/
-void fc_linkup(struct fc_lport *lport)
+void __fc_linkup(struct fc_lport *lport)
{
- printk(KERN_INFO "libfc: Link up on port (%6x)\n",
- fc_host_port_id(lport->host));
-
- mutex_lock(&lport->lp_mutex);
if (!lport->link_up) {
lport->link_up = 1;
if (lport->state == LPORT_ST_RESET)
fc_lport_enter_flogi(lport);
}
+}
+
+/**
+ * fc_linkup() - Handler for transport linkup events
+ * @lport: The local port whose link is up
+ */
+void fc_linkup(struct fc_lport *lport)
+{
+ printk(KERN_INFO "host%d: libfc: Link up on port (%6.6x)\n",
+ lport->host->host_no, lport->port_id);
+
+ mutex_lock(&lport->lp_mutex);
+ __fc_linkup(lport);
mutex_unlock(&lport->lp_mutex);
}
EXPORT_SYMBOL(fc_linkup);
/**
- * fc_linkdown() - Handler for transport linkdown events
+ * __fc_linkdown() - Handler for transport linkdown events
* @lport: The lport whose link is down
+ *
+ * Locking: must be called with the lp_mutex held
*/
-void fc_linkdown(struct fc_lport *lport)
+void __fc_linkdown(struct fc_lport *lport)
{
- mutex_lock(&lport->lp_mutex);
- printk(KERN_INFO "libfc: Link down on port (%6x)\n",
- fc_host_port_id(lport->host));
-
if (lport->link_up) {
lport->link_up = 0;
fc_lport_enter_reset(lport);
lport->tt.fcp_cleanup(lport);
}
+}
+
+/**
+ * fc_linkdown() - Handler for transport linkdown events
+ * @lport: The local port whose link is down
+ */
+void fc_linkdown(struct fc_lport *lport)
+{
+ printk(KERN_INFO "host%d: libfc: Link down on port (%6.6x)\n",
+ lport->host->host_no, lport->port_id);
+
+ mutex_lock(&lport->lp_mutex);
+ __fc_linkdown(lport);
mutex_unlock(&lport->lp_mutex);
}
EXPORT_SYMBOL(fc_linkdown);
/**
* fc_fabric_logoff() - Logout of the fabric
- * @lport: fc_lport pointer to logoff the fabric
+ * @lport: The local port to logoff the fabric
*
* Return value:
* 0 for success, -1 for failure
{
lport->tt.disc_stop_final(lport);
mutex_lock(&lport->lp_mutex);
- if (lport->dns_rp)
- lport->tt.rport_logoff(lport->dns_rp);
+ if (lport->dns_rdata)
+ lport->tt.rport_logoff(lport->dns_rdata);
mutex_unlock(&lport->lp_mutex);
lport->tt.rport_flush_queue();
mutex_lock(&lport->lp_mutex);
EXPORT_SYMBOL(fc_fabric_logoff);
/**
- * fc_lport_destroy() - unregister a fc_lport
- * @lport: fc_lport pointer to unregister
+ * fc_lport_destroy() - Unregister a fc_lport
+ * @lport: The local port to unregister
*
- * Return value:
- * None
* Note:
* exit routine for fc_lport instance
* clean-up all the allocated memory
EXPORT_SYMBOL(fc_lport_destroy);
/**
- * fc_set_mfs() - sets up the mfs for the corresponding fc_lport
- * @lport: fc_lport pointer to unregister
- * @mfs: the new mfs for fc_lport
- *
- * Set mfs for the given fc_lport to the new mfs.
- *
- * Return: 0 for success
+ * fc_set_mfs() - Set the maximum frame size for a local port
+ * @lport: The local port to set the MFS for
+ * @mfs: The new MFS
*/
int fc_set_mfs(struct fc_lport *lport, u32 mfs)
{
/**
* fc_lport_disc_callback() - Callback for discovery events
- * @lport: FC local port
+ * @lport: The local port receiving the event
* @event: The discovery event
*/
void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event)
FC_LPORT_DBG(lport, "Discovery succeeded\n");
break;
case DISC_EV_FAILED:
- printk(KERN_ERR "libfc: Discovery failed for port (%6x)\n",
- fc_host_port_id(lport->host));
+ printk(KERN_ERR "host%d: libfc: "
+ "Discovery failed for port (%6.6x)\n",
+ lport->host->host_no, lport->port_id);
mutex_lock(&lport->lp_mutex);
fc_lport_enter_reset(lport);
mutex_unlock(&lport->lp_mutex);
/**
* fc_rport_enter_ready() - Enter the ready state and start discovery
- * @lport: Fibre Channel local port that is ready
+ * @lport: The local port that is ready
*
* Locking Note: The lport lock is expected to be held before calling
* this routine.
fc_lport_state(lport));
fc_lport_state_enter(lport, LPORT_ST_READY);
+ if (lport->vport)
+ fc_vport_set_state(lport->vport, FC_VPORT_ACTIVE);
+ fc_vports_linkchange(lport);
- if (!lport->ptp_rp)
+ if (!lport->ptp_rdata)
lport->tt.disc_start(fc_lport_disc_callback, lport);
}
/**
+ * fc_lport_set_port_id() - set the local port Port ID
+ * @lport: The local port which will have its Port ID set.
+ * @port_id: The new port ID.
+ * @fp: The frame containing the incoming request, or NULL.
+ *
+ * Locking Note: The lport lock is expected to be held before calling
+ * this function.
+ */
+static void fc_lport_set_port_id(struct fc_lport *lport, u32 port_id,
+ struct fc_frame *fp)
+{
+ if (port_id)
+ printk(KERN_INFO "host%d: Assigned Port ID %6.6x\n",
+ lport->host->host_no, port_id);
+
+ lport->port_id = port_id;
+
+ /* Update the fc_host */
+ fc_host_port_id(lport->host) = port_id;
+
+ if (lport->tt.lport_set_port_id)
+ lport->tt.lport_set_port_id(lport, port_id, fp);
+}
+
+/**
* fc_lport_recv_flogi_req() - Receive a FLOGI request
* @sp_in: The sequence the FLOGI is on
- * @rx_fp: The frame the FLOGI is in
- * @lport: The lport that recieved the request
+ * @rx_fp: The FLOGI frame
+ * @lport: The local port that recieved the request
*
* A received FLOGI request indicates a point-to-point connection.
* Accept it with the common service parameters indicating our N port.
* Set up to do a PLOGI if we have the higher-number WWPN.
*
- * Locking Note: The lport lock is exected to be held before calling
+ * Locking Note: The lport lock is expected to be held before calling
* this function.
*/
static void fc_lport_recv_flogi_req(struct fc_seq *sp_in,
goto out;
remote_wwpn = get_unaligned_be64(&flp->fl_wwpn);
if (remote_wwpn == lport->wwpn) {
- printk(KERN_WARNING "libfc: Received FLOGI from port "
- "with same WWPN %llx\n", remote_wwpn);
+ printk(KERN_WARNING "host%d: libfc: Received FLOGI from port "
+ "with same WWPN %16.16llx\n",
+ lport->host->host_no, remote_wwpn);
goto out;
}
- FC_LPORT_DBG(lport, "FLOGI from port WWPN %llx\n", remote_wwpn);
+ FC_LPORT_DBG(lport, "FLOGI from port WWPN %16.16llx\n", remote_wwpn);
/*
* XXX what is the right thing to do for FIDs?
remote_fid = FC_LOCAL_PTP_FID_HI;
}
- fc_host_port_id(lport->host) = local_fid;
+ fc_lport_set_port_id(lport, local_fid, rx_fp);
fp = fc_frame_alloc(lport, sizeof(*flp));
if (fp) {
*/
f_ctl = FC_FC_EX_CTX | FC_FC_LAST_SEQ | FC_FC_END_SEQ;
ep = fc_seq_exch(sp);
- fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, ep->did, ep->sid,
+ fc_fill_fc_hdr(fp, FC_RCTL_ELS_REP, remote_fid, local_fid,
FC_TYPE_ELS, f_ctl, 0);
lport->tt.seq_send(lport, sp, fp);
/**
* fc_lport_recv_req() - The generic lport request handler
- * @lport: The lport that received the request
- * @sp: The sequence the request is on
- * @fp: The frame the request is in
+ * @lport: The local port that received the request
+ * @sp: The sequence the request is on
+ * @fp: The request frame
*
* This function will see if the lport handles the request or
* if an rport should handle the request.
{
struct fc_frame_header *fh = fc_frame_header_get(fp);
void (*recv) (struct fc_seq *, struct fc_frame *, struct fc_lport *);
- struct fc_rport_priv *rdata;
- u32 s_id;
- u32 d_id;
- struct fc_seq_els_data rjt_data;
mutex_lock(&lport->lp_mutex);
/*
* Check opcode.
*/
- recv = NULL;
+ recv = lport->tt.rport_recv_req;
switch (fc_frame_payload_op(fp)) {
case ELS_FLOGI:
recv = fc_lport_recv_flogi_req;
case ELS_RNID:
recv = fc_lport_recv_rnid_req;
break;
- case ELS_ADISC:
- recv = fc_lport_recv_adisc_req;
- break;
}
- if (recv)
- recv(sp, fp, lport);
- else {
- /*
- * Find session.
- * If this is a new incoming PLOGI, we won't find it.
- */
- s_id = ntoh24(fh->fh_s_id);
- d_id = ntoh24(fh->fh_d_id);
-
- rdata = lport->tt.rport_lookup(lport, s_id);
- if (rdata)
- lport->tt.rport_recv_req(sp, fp, rdata);
- else {
- rjt_data.fp = NULL;
- rjt_data.reason = ELS_RJT_UNAB;
- rjt_data.explan = ELS_EXPL_NONE;
- lport->tt.seq_els_rsp_send(sp,
- ELS_LS_RJT,
- &rjt_data);
- fc_frame_free(fp);
- }
- }
+ recv(sp, fp, lport);
} else {
FC_LPORT_DBG(lport, "dropping invalid frame (eof %x)\n",
fr_eof(fp));
}
/**
- * fc_lport_reset() - Reset an lport
- * @lport: The lport which should be reset
+ * fc_lport_reset() - Reset a local port
+ * @lport: The local port which should be reset
*
* Locking Note: This functions should not be called with the
* lport lock held.
EXPORT_SYMBOL(fc_lport_reset);
/**
- * fc_lport_reset_locked() - Reset the local port
- * @lport: Fibre Channel local port to be reset
+ * fc_lport_reset_locked() - Reset the local port w/ the lport lock held
+ * @lport: The local port to be reset
*
* Locking Note: The lport lock is expected to be held before calling
* this routine.
*/
static void fc_lport_reset_locked(struct fc_lport *lport)
{
- if (lport->dns_rp)
- lport->tt.rport_logoff(lport->dns_rp);
+ if (lport->dns_rdata)
+ lport->tt.rport_logoff(lport->dns_rdata);
- lport->ptp_rp = NULL;
+ if (lport->ptp_rdata) {
+ lport->tt.rport_logoff(lport->ptp_rdata);
+ kref_put(&lport->ptp_rdata->kref, lport->tt.rport_destroy);
+ lport->ptp_rdata = NULL;
+ }
lport->tt.disc_stop(lport);
lport->tt.exch_mgr_reset(lport, 0, 0);
fc_host_fabric_name(lport->host) = 0;
- fc_host_port_id(lport->host) = 0;
+
+ if (lport->port_id)
+ fc_lport_set_port_id(lport, 0, NULL);
}
/**
* fc_lport_enter_reset() - Reset the local port
- * @lport: Fibre Channel local port to be reset
+ * @lport: The local port to be reset
*
* Locking Note: The lport lock is expected to be held before calling
* this routine.
FC_LPORT_DBG(lport, "Entered RESET state from %s state\n",
fc_lport_state(lport));
+ if (lport->state == LPORT_ST_DISABLED || lport->state == LPORT_ST_LOGO)
+ return;
+
+ if (lport->vport) {
+ if (lport->link_up)
+ fc_vport_set_state(lport->vport, FC_VPORT_INITIALIZING);
+ else
+ fc_vport_set_state(lport->vport, FC_VPORT_LINKDOWN);
+ }
fc_lport_state_enter(lport, LPORT_ST_RESET);
+ fc_vports_linkchange(lport);
fc_lport_reset_locked(lport);
if (lport->link_up)
fc_lport_enter_flogi(lport);
}
/**
- * fc_lport_enter_disabled() - disable the local port
- * @lport: Fibre Channel local port to be reset
+ * fc_lport_enter_disabled() - Disable the local port
+ * @lport: The local port to be reset
*
* Locking Note: The lport lock is expected to be held before calling
* this routine.
fc_lport_state(lport));
fc_lport_state_enter(lport, LPORT_ST_DISABLED);
+ fc_vports_linkchange(lport);
fc_lport_reset_locked(lport);
}
/**
* fc_lport_error() - Handler for any errors
- * @lport: The fc_lport object
- * @fp: The frame pointer
+ * @lport: The local port that the error was on
+ * @fp: The error code encoded in a frame pointer
*
* If the error was caused by a resource allocation failure
* then wait for half a second and retry, otherwise retry
case LPORT_ST_DISABLED:
case LPORT_ST_READY:
case LPORT_ST_RESET:
- case LPORT_ST_RPN_ID:
+ case LPORT_ST_RNN_ID:
+ case LPORT_ST_RSNN_NN:
+ case LPORT_ST_RSPN_ID:
case LPORT_ST_RFT_ID:
+ case LPORT_ST_RFF_ID:
case LPORT_ST_SCR:
case LPORT_ST_DNS:
case LPORT_ST_FLOGI:
}
/**
- * fc_lport_rft_id_resp() - Handle response to Register Fibre
- * Channel Types by ID (RPN_ID) request
- * @sp: current sequence in RPN_ID exchange
- * @fp: response frame
+ * fc_lport_ns_resp() - Handle response to a name server
+ * registration exchange
+ * @sp: current sequence in 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
+ * held, but it will lock, call an _enter_* function or fc_lport_error()
* and then unlock the lport.
*/
-static void fc_lport_rft_id_resp(struct fc_seq *sp, struct fc_frame *fp,
- void *lp_arg)
+static void fc_lport_ns_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;
- if (fp == ERR_PTR(-FC_EX_CLOSED))
- return;
-
- mutex_lock(&lport->lp_mutex);
-
- FC_LPORT_DBG(lport, "Received a RFT_ID response\n");
-
- if (lport->state != LPORT_ST_RFT_ID) {
- FC_LPORT_DBG(lport, "Received a RFT_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_scr(lport);
- else
- fc_lport_error(lport, fp);
-out:
- fc_frame_free(fp);
-err:
- mutex_unlock(&lport->lp_mutex);
-}
-
-/**
- * fc_lport_rpn_id_resp() - Handle response to Register Port
- * Name by ID (RPN_ID) request
- * @sp: current sequence in RPN_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_rpn_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 ns %s\n", fc_els_resp_type(fp));
if (fp == ERR_PTR(-FC_EX_CLOSED))
return;
mutex_lock(&lport->lp_mutex);
- FC_LPORT_DBG(lport, "Received a RPN_ID response\n");
-
- if (lport->state != LPORT_ST_RPN_ID) {
- FC_LPORT_DBG(lport, "Received a RPN_ID response, but in state "
- "%s\n", fc_lport_state(lport));
+ if (lport->state < LPORT_ST_RNN_ID || lport->state > LPORT_ST_RFF_ID) {
+ FC_LPORT_DBG(lport, "Received a name server response, "
+ "but in state %s\n", fc_lport_state(lport));
if (IS_ERR(fp))
goto err;
goto out;
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_rft_id(lport);
+ switch (lport->state) {
+ case LPORT_ST_RNN_ID:
+ fc_lport_enter_ns(lport, LPORT_ST_RSNN_NN);
+ break;
+ case LPORT_ST_RSNN_NN:
+ fc_lport_enter_ns(lport, LPORT_ST_RSPN_ID);
+ break;
+ case LPORT_ST_RSPN_ID:
+ fc_lport_enter_ns(lport, LPORT_ST_RFT_ID);
+ break;
+ case LPORT_ST_RFT_ID:
+ fc_lport_enter_ns(lport, LPORT_ST_RFF_ID);
+ break;
+ case LPORT_ST_RFF_ID:
+ fc_lport_enter_scr(lport);
+ break;
+ default:
+ /* should have already been caught by state checks */
+ break;
+ }
else
fc_lport_error(lport, fp);
-
out:
fc_frame_free(fp);
err:
/**
* fc_lport_scr_resp() - Handle response to State Change Register (SCR) request
- * @sp: current sequence in SCR exchange
- * @fp: response frame
+ * @sp: current sequence in SCR exchange
+ * @fp: response frame
* @lp_arg: Fibre Channel lport port instance that sent the registration request
*
* Locking Note: This function will be called without the lport lock
struct fc_lport *lport = lp_arg;
u8 op;
+ FC_LPORT_DBG(lport, "Received a SCR %s\n", fc_els_resp_type(fp));
+
if (fp == ERR_PTR(-FC_EX_CLOSED))
return;
mutex_lock(&lport->lp_mutex);
- FC_LPORT_DBG(lport, "Received a SCR response\n");
-
if (lport->state != LPORT_ST_SCR) {
FC_LPORT_DBG(lport, "Received a SCR response, but in state "
"%s\n", fc_lport_state(lport));
}
/**
- * fc_lport_enter_scr() - Send a State Change Register (SCR) request
- * @lport: Fibre Channel local port to register for state changes
+ * fc_lport_enter_scr() - Send a SCR (State Change Register) request
+ * @lport: The local port to register for state changes
*
* Locking Note: The lport lock is expected to be held before calling
* this routine.
}
if (!lport->tt.elsct_send(lport, FC_FID_FCTRL, fp, ELS_SCR,
- fc_lport_scr_resp, lport, lport->e_d_tov))
- fc_lport_error(lport, fp);
+ fc_lport_scr_resp, lport,
+ 2 * lport->r_a_tov))
+ fc_lport_error(lport, NULL);
}
/**
- * fc_lport_enter_rft_id() - Register FC4-types with the name server
+ * fc_lport_enter_ns() - register some object 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_rft_id(struct fc_lport *lport)
+static void fc_lport_enter_ns(struct fc_lport *lport, enum fc_lport_state state)
{
struct fc_frame *fp;
- struct fc_ns_fts *lps;
- int i;
+ enum fc_ns_req cmd;
+ int size = sizeof(struct fc_ct_hdr);
+ size_t len;
- FC_LPORT_DBG(lport, "Entered RFT_ID state from %s state\n",
+ FC_LPORT_DBG(lport, "Entered %s state from %s state\n",
+ fc_lport_state_names[state],
fc_lport_state(lport));
- fc_lport_state_enter(lport, LPORT_ST_RFT_ID);
+ fc_lport_state_enter(lport, state);
- lps = &lport->fcts;
- i = sizeof(lps->ff_type_map) / sizeof(lps->ff_type_map[0]);
- while (--i >= 0)
- if (ntohl(lps->ff_type_map[i]) != 0)
- break;
- if (i < 0) {
- /* nothing to register, move on to SCR */
- fc_lport_enter_scr(lport);
- return;
- }
-
- fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) +
- sizeof(struct fc_ns_rft));
- if (!fp) {
- fc_lport_error(lport, fp);
+ switch (state) {
+ case LPORT_ST_RNN_ID:
+ cmd = FC_NS_RNN_ID;
+ size += sizeof(struct fc_ns_rn_id);
+ break;
+ case LPORT_ST_RSNN_NN:
+ len = strnlen(fc_host_symbolic_name(lport->host), 255);
+ /* if there is no symbolic name, skip to RFT_ID */
+ if (!len)
+ return fc_lport_enter_ns(lport, LPORT_ST_RFT_ID);
+ cmd = FC_NS_RSNN_NN;
+ size += sizeof(struct fc_ns_rsnn) + len;
+ break;
+ case LPORT_ST_RSPN_ID:
+ len = strnlen(fc_host_symbolic_name(lport->host), 255);
+ /* if there is no symbolic name, skip to RFT_ID */
+ if (!len)
+ return fc_lport_enter_ns(lport, LPORT_ST_RFT_ID);
+ cmd = FC_NS_RSPN_ID;
+ size += sizeof(struct fc_ns_rspn) + len;
+ break;
+ case LPORT_ST_RFT_ID:
+ cmd = FC_NS_RFT_ID;
+ size += sizeof(struct fc_ns_rft);
+ break;
+ case LPORT_ST_RFF_ID:
+ cmd = FC_NS_RFF_ID;
+ size += sizeof(struct fc_ns_rff_id);
+ break;
+ default:
+ fc_lport_error(lport, NULL);
return;
}
- if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RFT_ID,
- fc_lport_rft_id_resp,
- lport, lport->e_d_tov))
- fc_lport_error(lport, fp);
-}
-
-/**
- * fc_rport_enter_rft_id() - Register 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_rpn_id(struct fc_lport *lport)
-{
- struct fc_frame *fp;
-
- FC_LPORT_DBG(lport, "Entered RPN_ID state from %s state\n",
- fc_lport_state(lport));
-
- fc_lport_state_enter(lport, LPORT_ST_RPN_ID);
-
- fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) +
- sizeof(struct fc_ns_rn_id));
+ fp = fc_frame_alloc(lport, size);
if (!fp) {
fc_lport_error(lport, fp);
return;
}
- if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, FC_NS_RPN_ID,
- fc_lport_rpn_id_resp,
- lport, lport->e_d_tov))
+ if (!lport->tt.elsct_send(lport, FC_FID_DIR_SERV, fp, cmd,
+ fc_lport_ns_resp,
+ lport, 3 * lport->r_a_tov))
fc_lport_error(lport, fp);
}
};
/**
- * fc_rport_enter_dns() - Create a rport to the name server
- * @lport: Fibre Channel local port requesting a rport for the name server
+ * fc_rport_enter_dns() - Create a fc_rport for the name server
+ * @lport: The local port requesting a remote port for the name server
*
* Locking Note: The lport lock is expected to be held before calling
* this routine.
}
/**
- * fc_lport_timeout() - Handler for the retry_work timer.
- * @work: The work struct of the fc_lport
+ * fc_lport_timeout() - Handler for the retry_work timer
+ * @work: The work struct of the local port
*/
static void fc_lport_timeout(struct work_struct *work)
{
switch (lport->state) {
case LPORT_ST_DISABLED:
+ WARN_ON(1);
+ break;
case LPORT_ST_READY:
- case LPORT_ST_RESET:
WARN_ON(1);
break;
+ case LPORT_ST_RESET:
+ break;
case LPORT_ST_FLOGI:
fc_lport_enter_flogi(lport);
break;
case LPORT_ST_DNS:
fc_lport_enter_dns(lport);
break;
- case LPORT_ST_RPN_ID:
- fc_lport_enter_rpn_id(lport);
- break;
+ case LPORT_ST_RNN_ID:
+ case LPORT_ST_RSNN_NN:
+ case LPORT_ST_RSPN_ID:
case LPORT_ST_RFT_ID:
- fc_lport_enter_rft_id(lport);
+ case LPORT_ST_RFF_ID:
+ fc_lport_enter_ns(lport, lport->state);
break;
case LPORT_ST_SCR:
fc_lport_enter_scr(lport);
/**
* fc_lport_logo_resp() - Handle response to LOGO request
- * @sp: current sequence in LOGO exchange
- * @fp: response frame
- * @lp_arg: Fibre Channel lport port instance that sent the LOGO request
+ * @sp: The sequence that the LOGO was on
+ * @fp: The LOGO frame
+ * @lp_arg: The lport port that received the LOGO request
*
* Locking Note: This function will be called without the lport lock
- * held, but it will lock, call an _enter_* function or fc_lport_error
+ * held, but it will lock, call an _enter_* function or fc_lport_error()
* and then unlock the lport.
*/
-static void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp,
- void *lp_arg)
+void fc_lport_logo_resp(struct fc_seq *sp, struct fc_frame *fp,
+ void *lp_arg)
{
struct fc_lport *lport = lp_arg;
u8 op;
+ FC_LPORT_DBG(lport, "Received a LOGO %s\n", fc_els_resp_type(fp));
+
if (fp == ERR_PTR(-FC_EX_CLOSED))
return;
mutex_lock(&lport->lp_mutex);
- FC_LPORT_DBG(lport, "Received a LOGO response\n");
-
if (lport->state != LPORT_ST_LOGO) {
FC_LPORT_DBG(lport, "Received a LOGO response, but in state "
"%s\n", fc_lport_state(lport));
err:
mutex_unlock(&lport->lp_mutex);
}
+EXPORT_SYMBOL(fc_lport_logo_resp);
/**
* fc_rport_enter_logo() - Logout of the fabric
- * @lport: Fibre Channel local port to be logged out
+ * @lport: The local port to be logged out
*
* Locking Note: The lport lock is expected to be held before calling
* this routine.
fc_lport_state(lport));
fc_lport_state_enter(lport, LPORT_ST_LOGO);
+ fc_vports_linkchange(lport);
fp = fc_frame_alloc(lport, sizeof(*logo));
if (!fp) {
}
if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, ELS_LOGO,
- fc_lport_logo_resp, lport, lport->e_d_tov))
- fc_lport_error(lport, fp);
+ fc_lport_logo_resp, lport,
+ 2 * lport->r_a_tov))
+ fc_lport_error(lport, NULL);
}
/**
* fc_lport_flogi_resp() - Handle response to FLOGI request
- * @sp: current sequence in FLOGI exchange
- * @fp: response frame
- * @lp_arg: Fibre Channel lport port instance that sent the FLOGI request
+ * @sp: The sequence that the FLOGI was on
+ * @fp: The FLOGI response frame
+ * @lp_arg: The lport port that received the FLOGI response
*
* Locking Note: This function will be called without the lport lock
- * held, but it will lock, call an _enter_* function or fc_lport_error
+ * held, but it will lock, call an _enter_* function or fc_lport_error()
* and then unlock the lport.
*/
-static void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp,
- void *lp_arg)
+void fc_lport_flogi_resp(struct fc_seq *sp, struct fc_frame *fp,
+ void *lp_arg)
{
struct fc_lport *lport = lp_arg;
struct fc_frame_header *fh;
unsigned int e_d_tov;
u16 mfs;
+ FC_LPORT_DBG(lport, "Received a FLOGI %s\n", fc_els_resp_type(fp));
+
if (fp == ERR_PTR(-FC_EX_CLOSED))
return;
mutex_lock(&lport->lp_mutex);
- FC_LPORT_DBG(lport, "Received a FLOGI response\n");
-
if (lport->state != LPORT_ST_FLOGI) {
FC_LPORT_DBG(lport, "Received a FLOGI response, but in state "
"%s\n", fc_lport_state(lport));
fh = fc_frame_header_get(fp);
did = ntoh24(fh->fh_d_id);
if (fc_frame_payload_op(fp) == ELS_LS_ACC && did != 0) {
-
- printk(KERN_INFO "libfc: Assigned FID (%6x) in FLOGI response\n",
- did);
- fc_host_port_id(lport->host) = did;
-
flp = fc_frame_payload_get(fp, sizeof(*flp));
if (flp) {
mfs = ntohs(flp->fl_csp.sp_bb_data) &
e_d_tov = ntohl(flp->fl_csp.sp_e_d_tov);
if (csp_flags & FC_SP_FT_EDTR)
e_d_tov /= 1000000;
+
+ lport->npiv_enabled = !!(csp_flags & FC_SP_FT_NPIV_ACC);
+
if ((csp_flags & FC_SP_FT_FPORT) == 0) {
if (e_d_tov > lport->e_d_tov)
lport->e_d_tov = e_d_tov;
lport->r_a_tov = 2 * e_d_tov;
- printk(KERN_INFO "libfc: Port (%6x) entered "
- "point to point mode\n", did);
+ fc_lport_set_port_id(lport, did, fp);
+ printk(KERN_INFO "host%d: libfc: "
+ "Port (%6.6x) entered "
+ "point-to-point mode\n",
+ lport->host->host_no, did);
fc_lport_ptp_setup(lport, ntoh24(fh->fh_s_id),
get_unaligned_be64(
&flp->fl_wwpn),
lport->r_a_tov = r_a_tov;
fc_host_fabric_name(lport->host) =
get_unaligned_be64(&flp->fl_wwnn);
+ fc_lport_set_port_id(lport, did, fp);
fc_lport_enter_dns(lport);
}
}
err:
mutex_unlock(&lport->lp_mutex);
}
+EXPORT_SYMBOL(fc_lport_flogi_resp);
/**
* fc_rport_enter_flogi() - Send a FLOGI request to the fabric manager
if (!fp)
return fc_lport_error(lport, fp);
- if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp, ELS_FLOGI,
- fc_lport_flogi_resp, lport, lport->e_d_tov))
- fc_lport_error(lport, fp);
+ if (!lport->tt.elsct_send(lport, FC_FID_FLOGI, fp,
+ lport->vport ? ELS_FDISC : ELS_FLOGI,
+ fc_lport_flogi_resp, lport,
+ lport->vport ? 2 * lport->r_a_tov :
+ lport->e_d_tov))
+ fc_lport_error(lport, NULL);
}
-/* Configure a fc_lport */
+/**
+ * fc_lport_config() - Configure a fc_lport
+ * @lport: The local port to be configured
+ */
int fc_lport_config(struct fc_lport *lport)
{
INIT_DELAYED_WORK(&lport->retry_work, fc_lport_timeout);
}
EXPORT_SYMBOL(fc_lport_config);
+/**
+ * fc_lport_init() - Initialize the lport layer for a local port
+ * @lport: The local port to initialize the exchange layer for
+ */
int fc_lport_init(struct fc_lport *lport)
{
if (!lport->tt.lport_recv)
if (lport->link_supported_speeds & FC_PORTSPEED_10GBIT)
fc_host_supported_speeds(lport->host) |= FC_PORTSPEED_10GBIT;
- INIT_LIST_HEAD(&lport->ema_list);
return 0;
}
EXPORT_SYMBOL(fc_lport_init);
+
+/**
+ * fc_lport_bsg_resp() - The common response handler for FC Passthrough requests
+ * @sp: The sequence for the FC Passthrough response
+ * @fp: The response frame
+ * @info_arg: The BSG info that the response is for
+ */
+static void fc_lport_bsg_resp(struct fc_seq *sp, struct fc_frame *fp,
+ void *info_arg)
+{
+ struct fc_bsg_info *info = info_arg;
+ struct fc_bsg_job *job = info->job;
+ struct fc_lport *lport = info->lport;
+ struct fc_frame_header *fh;
+ size_t len;
+ void *buf;
+
+ if (IS_ERR(fp)) {
+ job->reply->result = (PTR_ERR(fp) == -FC_EX_CLOSED) ?
+ -ECONNABORTED : -ETIMEDOUT;
+ job->reply_len = sizeof(uint32_t);
+ job->state_flags |= FC_RQST_STATE_DONE;
+ job->job_done(job);
+ kfree(info);
+ return;
+ }
+
+ mutex_lock(&lport->lp_mutex);
+ fh = fc_frame_header_get(fp);
+ len = fr_len(fp) - sizeof(*fh);
+ buf = fc_frame_payload_get(fp, 0);
+
+ if (fr_sof(fp) == FC_SOF_I3 && !ntohs(fh->fh_seq_cnt)) {
+ /* Get the response code from the first frame payload */
+ unsigned short cmd = (info->rsp_code == FC_FS_ACC) ?
+ ntohs(((struct fc_ct_hdr *)buf)->ct_cmd) :
+ (unsigned short)fc_frame_payload_op(fp);
+
+ /* Save the reply status of the job */
+ job->reply->reply_data.ctels_reply.status =
+ (cmd == info->rsp_code) ?
+ FC_CTELS_STATUS_OK : FC_CTELS_STATUS_REJECT;
+ }
+
+ job->reply->reply_payload_rcv_len +=
+ fc_copy_buffer_to_sglist(buf, len, info->sg, &info->nents,
+ &info->offset, KM_BIO_SRC_IRQ, NULL);
+
+ if (fr_eof(fp) == FC_EOF_T &&
+ (ntoh24(fh->fh_f_ctl) & (FC_FC_LAST_SEQ | FC_FC_END_SEQ)) ==
+ (FC_FC_LAST_SEQ | FC_FC_END_SEQ)) {
+ if (job->reply->reply_payload_rcv_len >
+ job->reply_payload.payload_len)
+ job->reply->reply_payload_rcv_len =
+ job->reply_payload.payload_len;
+ job->reply->result = 0;
+ job->state_flags |= FC_RQST_STATE_DONE;
+ job->job_done(job);
+ kfree(info);
+ }
+ fc_frame_free(fp);
+ mutex_unlock(&lport->lp_mutex);
+}
+
+/**
+ * fc_lport_els_request() - Send ELS passthrough request
+ * @job: The BSG Passthrough job
+ * @lport: The local port sending the request
+ * @did: The destination port id
+ *
+ * Locking Note: The lport lock is expected to be held before calling
+ * this routine.
+ */
+static int fc_lport_els_request(struct fc_bsg_job *job,
+ struct fc_lport *lport,
+ u32 did, u32 tov)
+{
+ struct fc_bsg_info *info;
+ struct fc_frame *fp;
+ struct fc_frame_header *fh;
+ char *pp;
+ int len;
+
+ fp = fc_frame_alloc(lport, job->request_payload.payload_len);
+ if (!fp)
+ return -ENOMEM;
+
+ len = job->request_payload.payload_len;
+ pp = fc_frame_payload_get(fp, len);
+
+ sg_copy_to_buffer(job->request_payload.sg_list,
+ job->request_payload.sg_cnt,
+ pp, len);
+
+ fh = fc_frame_header_get(fp);
+ fh->fh_r_ctl = FC_RCTL_ELS_REQ;
+ hton24(fh->fh_d_id, did);
+ hton24(fh->fh_s_id, lport->port_id);
+ fh->fh_type = FC_TYPE_ELS;
+ hton24(fh->fh_f_ctl, FC_FC_FIRST_SEQ |
+ FC_FC_END_SEQ | FC_FC_SEQ_INIT);
+ fh->fh_cs_ctl = 0;
+ fh->fh_df_ctl = 0;
+ fh->fh_parm_offset = 0;
+
+ info = kzalloc(sizeof(struct fc_bsg_info), GFP_KERNEL);
+ if (!info) {
+ fc_frame_free(fp);
+ return -ENOMEM;
+ }
+
+ info->job = job;
+ info->lport = lport;
+ info->rsp_code = ELS_LS_ACC;
+ info->nents = job->reply_payload.sg_cnt;
+ info->sg = job->reply_payload.sg_list;
+
+ if (!lport->tt.exch_seq_send(lport, fp, fc_lport_bsg_resp,
+ NULL, info, tov))
+ return -ECOMM;
+ return 0;
+}
+
+/**
+ * fc_lport_ct_request() - Send CT Passthrough request
+ * @job: The BSG Passthrough job
+ * @lport: The local port sending the request
+ * @did: The destination FC-ID
+ * @tov: The timeout period to wait for the response
+ *
+ * Locking Note: The lport lock is expected to be held before calling
+ * this routine.
+ */
+static int fc_lport_ct_request(struct fc_bsg_job *job,
+ struct fc_lport *lport, u32 did, u32 tov)
+{
+ struct fc_bsg_info *info;
+ struct fc_frame *fp;
+ struct fc_frame_header *fh;
+ struct fc_ct_req *ct;
+ size_t len;
+
+ fp = fc_frame_alloc(lport, sizeof(struct fc_ct_hdr) +
+ job->request_payload.payload_len);
+ if (!fp)
+ return -ENOMEM;
+
+ len = job->request_payload.payload_len;
+ ct = fc_frame_payload_get(fp, len);
+
+ sg_copy_to_buffer(job->request_payload.sg_list,
+ job->request_payload.sg_cnt,
+ ct, len);
+
+ fh = fc_frame_header_get(fp);
+ fh->fh_r_ctl = FC_RCTL_DD_UNSOL_CTL;
+ hton24(fh->fh_d_id, did);
+ hton24(fh->fh_s_id, lport->port_id);
+ fh->fh_type = FC_TYPE_CT;
+ hton24(fh->fh_f_ctl, FC_FC_FIRST_SEQ |
+ FC_FC_END_SEQ | FC_FC_SEQ_INIT);
+ fh->fh_cs_ctl = 0;
+ fh->fh_df_ctl = 0;
+ fh->fh_parm_offset = 0;
+
+ info = kzalloc(sizeof(struct fc_bsg_info), GFP_KERNEL);
+ if (!info) {
+ fc_frame_free(fp);
+ return -ENOMEM;
+ }
+
+ info->job = job;
+ info->lport = lport;
+ info->rsp_code = FC_FS_ACC;
+ info->nents = job->reply_payload.sg_cnt;
+ info->sg = job->reply_payload.sg_list;
+
+ if (!lport->tt.exch_seq_send(lport, fp, fc_lport_bsg_resp,
+ NULL, info, tov))
+ return -ECOMM;
+ return 0;
+}
+
+/**
+ * fc_lport_bsg_request() - The common entry point for sending
+ * FC Passthrough requests
+ * @job: The BSG passthrough job
+ */
+int fc_lport_bsg_request(struct fc_bsg_job *job)
+{
+ struct request *rsp = job->req->next_rq;
+ struct Scsi_Host *shost = job->shost;
+ struct fc_lport *lport = shost_priv(shost);
+ struct fc_rport *rport;
+ struct fc_rport_priv *rdata;
+ int rc = -EINVAL;
+ u32 did;
+
+ job->reply->reply_payload_rcv_len = 0;
+ if (rsp)
+ rsp->resid_len = job->reply_payload.payload_len;
+
+ mutex_lock(&lport->lp_mutex);
+
+ switch (job->request->msgcode) {
+ case FC_BSG_RPT_ELS:
+ rport = job->rport;
+ if (!rport)
+ break;
+
+ rdata = rport->dd_data;
+ rc = fc_lport_els_request(job, lport, rport->port_id,
+ rdata->e_d_tov);
+ break;
+
+ case FC_BSG_RPT_CT:
+ rport = job->rport;
+ if (!rport)
+ break;
+
+ rdata = rport->dd_data;
+ rc = fc_lport_ct_request(job, lport, rport->port_id,
+ rdata->e_d_tov);
+ break;
+
+ case FC_BSG_HST_CT:
+ did = ntoh24(job->request->rqst_data.h_ct.port_id);
+ if (did == FC_FID_DIR_SERV)
+ rdata = lport->dns_rdata;
+ else
+ rdata = lport->tt.rport_lookup(lport, did);
+
+ if (!rdata)
+ break;
+
+ rc = fc_lport_ct_request(job, lport, did, rdata->e_d_tov);
+ break;
+
+ case FC_BSG_HST_ELS_NOLOGIN:
+ did = ntoh24(job->request->rqst_data.h_els.port_id);
+ rc = fc_lport_els_request(job, lport, did, lport->e_d_tov);
+ break;
+ }
+
+ mutex_unlock(&lport->lp_mutex);
+ return rc;
+}
+EXPORT_SYMBOL(fc_lport_bsg_request);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff