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authorBhanu Prakash Gollapudi <bprakash@broadcom.com>2013-02-04 23:00:20 -0800
committerRobert Love <robert.w.love@intel.com>2013-02-11 17:38:35 -0800
commitb2593cbe18c4f50c9acacd88860b051f567654d7 (patch)
treeacd48e0b939a8d170e5beee00056c5cb4a430209 /drivers/scsi/fcoe
parent94aa743a2af455ee3bd9fc3410dff82f6abf4522 (diff)
downloadlinaro-lsk-b2593cbe18c4f50c9acacd88860b051f567654d7.tar.gz
libfcoe: Handle CVL while waiting to select an FCF
When a CVL is received while we wait to select best FCF, we drop it without handling it. This causes initiator and the switch to go out-of-sync. Initiator proceeds selecting one of the FCFs and tries to send FIP FLOGI. However the switch may reject the FLOGI, as it has cleared its internal state, and expects the initiator to start FIP discovery protocol. Fix this condition by resetting the fcoe controller. Signed-off-by: Bhanu Prakash Gollapudi <bprakash@broadcom.com> Reviewed-by: Yi Zou <yi.zou@intel.com> Signed-off-by: Robert Love <robert.w.love@intel.com>
Diffstat (limited to 'drivers/scsi/fcoe')
-rw-r--r--drivers/scsi/fcoe/fcoe_ctlr.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/scsi/fcoe/fcoe_ctlr.c b/drivers/scsi/fcoe/fcoe_ctlr.c
index 75834255bf0..aff3c44a1cd 100644
--- a/drivers/scsi/fcoe/fcoe_ctlr.c
+++ b/drivers/scsi/fcoe/fcoe_ctlr.c
@@ -1291,8 +1291,16 @@ static void fcoe_ctlr_recv_clr_vlink(struct fcoe_ctlr *fip,
LIBFCOE_FIP_DBG(fip, "Clear Virtual Link received\n");
- if (!fcf || !lport->port_id)
+ if (!fcf || !lport->port_id) {
+ /*
+ * We are yet to select best FCF, but we got CVL in the
+ * meantime. reset the ctlr and let it rediscover the FCF
+ */
+ mutex_lock(&fip->ctlr_mutex);
+ fcoe_ctlr_reset(fip);
+ mutex_unlock(&fip->ctlr_mutex);
return;
+ }
/*
* mask of required descriptors. Validating each one clears its bit.