diff options
| author | Saurav Kashyap <skashyap@marvell.com> | 2019-03-26 00:38:42 -0700 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2019-03-27 21:54:52 -0400 |
| commit | 76dbf4ff068c730bf6927193a481b692e87f9f3e (patch) | |
| tree | 35e6fd89bc69b3b1ab00bef2e492044e0f9310f8 /drivers/scsi/qedf | |
| parent | 0cbd0075390db67324cfd33a50fa4998b605a085 (diff) | |
scsi: qedf: Check for link state before processing LL2 packets and send fipvlan retries
- Check if link is UP before sending and processing any packets on wire.
Signed-off-by: Saurav Kashyap <skashyap@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qedf')
| -rw-r--r-- | drivers/scsi/qedf/qedf_fip.c | 6 | ||||
| -rw-r--r-- | drivers/scsi/qedf/qedf_main.c | 28 |
2 files changed, 28 insertions, 6 deletions
diff --git a/drivers/scsi/qedf/qedf_fip.c b/drivers/scsi/qedf/qedf_fip.c index 3fd3af799b3d..e669679e6a3b 100644 --- a/drivers/scsi/qedf/qedf_fip.c +++ b/drivers/scsi/qedf/qedf_fip.c @@ -95,6 +95,12 @@ static void qedf_fcoe_process_vlan_resp(struct qedf_ctx *qedf, rlen -= dlen; } + if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { + QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_DISC, + "Dropping VLAN response as link is down.\n"); + return; + } + QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "VLAN response, " "vid=0x%x.\n", vid); diff --git a/drivers/scsi/qedf/qedf_main.c b/drivers/scsi/qedf/qedf_main.c index e5d644f6e098..9e186d762d63 100644 --- a/drivers/scsi/qedf/qedf_main.c +++ b/drivers/scsi/qedf/qedf_main.c @@ -124,21 +124,24 @@ static bool qedf_initiate_fipvlan_req(struct qedf_ctx *qedf) { int rc; - if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { - QEDF_ERR(&(qedf->dbg_ctx), "Link not up.\n"); - return false; - } - while (qedf->fipvlan_retries--) { + /* This is to catch if link goes down during fipvlan retries */ + if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { + QEDF_ERR(&qedf->dbg_ctx, "Link not up.\n"); + return false; + } + if (qedf->vlan_id > 0) return true; + QEDF_INFO(&(qedf->dbg_ctx), QEDF_LOG_DISC, "Retry %d.\n", qedf->fipvlan_retries); init_completion(&qedf->fipvlan_compl); qedf_fcoe_send_vlan_req(qedf); rc = wait_for_completion_timeout(&qedf->fipvlan_compl, 1 * HZ); - if (rc > 0) { + if (rc > 0 && + (atomic_read(&qedf->link_state) == QEDF_LINK_UP)) { fcoe_ctlr_link_up(&qedf->ctlr); return true; } @@ -159,6 +162,12 @@ static void qedf_handle_link_update(struct work_struct *work) rc = qedf_initiate_fipvlan_req(qedf); if (rc) return; + + if (atomic_read(&qedf->link_state) != QEDF_LINK_UP) { + qedf->vlan_id = 0; + return; + } + /* * If we get here then we never received a repsonse to our * fip vlan request so set the vlan_id to the default and @@ -2413,6 +2422,13 @@ static int qedf_ll2_rx(void *cookie, struct sk_buff *skb, struct qedf_ctx *qedf = (struct qedf_ctx *)cookie; struct qedf_skb_work *skb_work; + if (atomic_read(&qedf->link_state) == QEDF_LINK_DOWN) { + QEDF_INFO(&qedf->dbg_ctx, QEDF_LOG_LL2, + "Dropping frame as link state is down.\n"); + kfree_skb(skb); + return 0; + } + skb_work = kzalloc(sizeof(struct qedf_skb_work), GFP_ATOMIC); if (!skb_work) { QEDF_WARN(&(qedf->dbg_ctx), "Could not allocate skb_work so " |