static void fc_lport_recv_logo_req(struct fc_seq *sp, struct fc_frame *fp,
struct fc_lport *lport)
{
lport->tt.seq_els_rsp_send(sp, ELS_LS_ACC, NULL);
fc_lport_enter_reset(lport);
fc_frame_free(fp);
}
/**
* 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)
{
unsigned int old_mfs;
int rc = -EINVAL;
mutex_lock(&lport->lp_mutex);
old_mfs = lport->mfs;
if (mfs >= FC_MIN_MAX_FRAME) {
mfs &= ~3;
if (mfs > FC_MAX_FRAME)
mfs = FC_MAX_FRAME;
mfs -= sizeof(struct fc_frame_header);
lport->mfs = mfs;
rc = 0;
}
if (!rc && mfs < old_mfs)
fc_lport_enter_reset(lport);
mutex_unlock(&lport->lp_mutex);
return rc;
}
/**
* fc_lport_error() - Handler for any errors
* @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
* after the e_d_tov time.
*/
static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp)
{
unsigned long delay = 0;
FC_LPORT_DBG(lport, "Error %ld in state %s, retries %d\n",
PTR_ERR(fp), fc_lport_state(lport),
lport->retry_count);
if (PTR_ERR(fp) == -FC_EX_CLOSED)
return;
/*
* Memory allocation failure, or the exchange timed out
* or we received LS_RJT.
* Retry after delay
*/
if (lport->retry_count < lport->max_retry_count) {
lport->retry_count++;
if (!fp)
delay = msecs_to_jiffies(500);
else
delay = msecs_to_jiffies(lport->e_d_tov);
schedule_delayed_work(&lport->retry_work, delay);
} else
fc_lport_enter_reset(lport);
}
static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp)
{
unsigned long delay = 0;
FC_LPORT_DBG(lport, "Error %ld in state %s, retries %d\n",
PTR_ERR(fp), fc_lport_state(lport),
lport->retry_count);
if (!fp || PTR_ERR(fp) == -FC_EX_TIMEOUT) {
if (lport->retry_count < lport->max_retry_count) {
lport->retry_count++;
if (!fp)
delay = msecs_to_jiffies(500);
else
delay = msecs_to_jiffies(lport->e_d_tov);
schedule_delayed_work(&lport->retry_work, delay);
} else {
switch (lport->state) {
case LPORT_ST_DISABLED:
case LPORT_ST_READY:
case LPORT_ST_RESET:
case LPORT_ST_RPN_ID:
case LPORT_ST_RFT_ID:
case LPORT_ST_SCR:
case LPORT_ST_DNS:
case LPORT_ST_FLOGI:
case LPORT_ST_LOGO:
fc_lport_enter_reset(lport);
break;
}
}
}
}
/**
* 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.
*/
int fc_lport_reset(struct fc_lport *lport)
{
cancel_delayed_work_sync(&lport->retry_work);
mutex_lock(&lport->lp_mutex);
fc_lport_enter_reset(lport);
mutex_unlock(&lport->lp_mutex);
return 0;
}
/**
* __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)
{
if (lport->link_up) {
lport->link_up = 0;
fc_lport_enter_reset(lport);
lport->tt.fcp_cleanup(lport);
}
}
/**
* fc_fabric_login() - Start the lport state machine
* @lport: The local port that should log into the fabric
*
* Locking Note: This function should not be called
* with the lport lock held.
*/
int fc_fabric_login(struct fc_lport *lport)
{
int rc = -1;
mutex_lock(&lport->lp_mutex);
if (lport->state == LPORT_ST_DISABLED) {
fc_lport_enter_reset(lport);
rc = 0;
}
mutex_unlock(&lport->lp_mutex);
return rc;
}
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);
}
mutex_unlock(&lport->lp_mutex);
}
void fc_lport_disc_callback(struct fc_lport *lport, enum fc_disc_event event)
{
switch (event) {
case DISC_EV_SUCCESS:
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));
mutex_lock(&lport->lp_mutex);
fc_lport_enter_reset(lport);
mutex_unlock(&lport->lp_mutex);
break;
case DISC_EV_NONE:
WARN_ON(1);
break;
}
}
static void fc_lport_error(struct fc_lport *lport, struct fc_frame *fp)
{
unsigned long delay = 0;
FC_LPORT_DBG(lport, "Error %ld in state %s, retries %d\n",
PTR_ERR(fp), fc_lport_state(lport),
lport->retry_count);
if (PTR_ERR(fp) == -FC_EX_CLOSED)
return;
if (lport->retry_count < lport->max_retry_count) {
lport->retry_count++;
if (!fp)
delay = msecs_to_jiffies(500);
else
delay = msecs_to_jiffies(lport->e_d_tov);
schedule_delayed_work(&lport->retry_work, delay);
} else
fc_lport_enter_reset(lport);
}
