diff options
| -rw-r--r-- | drivers/scsi/fcoe/libfcoe.c | 48 |
1 files changed, 41 insertions, 7 deletions
diff --git a/drivers/scsi/fcoe/libfcoe.c b/drivers/scsi/fcoe/libfcoe.c index 76056e4c9297..11f3db5e506b 100644 --- a/drivers/scsi/fcoe/libfcoe.c +++ b/drivers/scsi/fcoe/libfcoe.c @@ -80,6 +80,40 @@ do { \ printk(KERN_INFO "host%d: fip: " fmt, \ (fip)->lp->host->host_no, ##args);) +static const char *fcoe_ctlr_states[] = { + [FIP_ST_DISABLED] = "DISABLED", + [FIP_ST_LINK_WAIT] = "LINK_WAIT", + [FIP_ST_AUTO] = "AUTO", + [FIP_ST_NON_FIP] = "NON_FIP", + [FIP_ST_ENABLED] = "ENABLED", +}; + +static const char *fcoe_ctlr_state(enum fip_state state) +{ + const char *cp = "unknown"; + + if (state < ARRAY_SIZE(fcoe_ctlr_states)) + cp = fcoe_ctlr_states[state]; + if (!cp) + cp = "unknown"; + return cp; +} + +/** + * fcoe_ctlr_set_state() - Set and do debug printing for the new FIP state. + * @fip: The FCoE controller + * @state: The new state + */ +static void fcoe_ctlr_set_state(struct fcoe_ctlr *fip, enum fip_state state) +{ + if (state == fip->state) + return; + if (fip->lp) + LIBFCOE_FIP_DBG(fip, "state %s -> %s\n", + fcoe_ctlr_state(fip->state), fcoe_ctlr_state(state)); + fip->state = state; +} + /** * fcoe_ctlr_mtu_valid() - Check if a FCF's MTU is valid * @fcf: The FCF to check @@ -110,7 +144,7 @@ static inline int fcoe_ctlr_fcf_usable(struct fcoe_fcf *fcf) */ void fcoe_ctlr_init(struct fcoe_ctlr *fip, enum fip_state mode) { - fip->state = FIP_ST_LINK_WAIT; + fcoe_ctlr_set_state(fip, FIP_ST_LINK_WAIT); fip->mode = mode; INIT_LIST_HEAD(&fip->fcfs); mutex_init(&fip->ctlr_mutex); @@ -160,7 +194,7 @@ void fcoe_ctlr_destroy(struct fcoe_ctlr *fip) skb_queue_purge(&fip->fip_recv_list); mutex_lock(&fip->ctlr_mutex); - fip->state = FIP_ST_DISABLED; + fcoe_ctlr_set_state(fip, FIP_ST_DISABLED); fcoe_ctlr_reset_fcfs(fip); mutex_unlock(&fip->ctlr_mutex); del_timer_sync(&fip->timer); @@ -260,7 +294,7 @@ void fcoe_ctlr_link_up(struct fcoe_ctlr *fip) mutex_unlock(&fip->ctlr_mutex); fc_linkup(fip->lp); } else if (fip->state == FIP_ST_LINK_WAIT) { - fip->state = fip->mode; + fcoe_ctlr_set_state(fip, fip->mode); mutex_unlock(&fip->ctlr_mutex); if (fip->state == FIP_ST_AUTO) LIBFCOE_FIP_DBG(fip, "%s", "setting AUTO mode.\n"); @@ -303,7 +337,7 @@ int fcoe_ctlr_link_down(struct fcoe_ctlr *fip) mutex_lock(&fip->ctlr_mutex); fcoe_ctlr_reset(fip); link_dropped = fip->state != FIP_ST_LINK_WAIT; - fip->state = FIP_ST_LINK_WAIT; + fcoe_ctlr_set_state(fip, FIP_ST_LINK_WAIT); mutex_unlock(&fip->ctlr_mutex); if (link_dropped) @@ -1170,7 +1204,7 @@ static int fcoe_ctlr_recv_handler(struct fcoe_ctlr *fip, struct sk_buff *skb) state = fip->state; if (state == FIP_ST_AUTO) { fip->map_dest = 0; - fip->state = FIP_ST_ENABLED; + fcoe_ctlr_set_state(fip, FIP_ST_ENABLED); state = FIP_ST_ENABLED; LIBFCOE_FIP_DBG(fip, "Using FIP mode\n"); } @@ -1401,7 +1435,7 @@ int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *fip, struct fc_lport *lport, mutex_unlock(&fip->ctlr_mutex); return -EINVAL; } - fip->state = FIP_ST_NON_FIP; + fcoe_ctlr_set_state(fip, FIP_ST_NON_FIP); LIBFCOE_FIP_DBG(fip, "received FLOGI LS_ACC using non-FIP mode\n"); @@ -1431,7 +1465,7 @@ int fcoe_ctlr_recv_flogi(struct fcoe_ctlr *fip, struct fc_lport *lport, if (fip->state == FIP_ST_AUTO) LIBFCOE_FIP_DBG(fip, "received non-FIP FLOGI. " "Setting non-FIP mode\n"); - fip->state = FIP_ST_NON_FIP; + fcoe_ctlr_set_state(fip, FIP_ST_NON_FIP); } mutex_unlock(&fip->ctlr_mutex); } |