diff options
| author | Neerav Parikh <Neerav.Parikh@intel.com> | 2012-09-24 11:52:45 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-10-07 11:49:34 +0100 |
| commit | 31c37a6f21d86e6bca095b71d603ed543ae070ad (patch) | |
| tree | 1f0bf61ad223ec6b59aae969f62001bae5c1437f /include/scsi | |
| parent | bd756ddea18e02ccea8b29496b2fe3bd91af8eb7 (diff) | |
| download | talos-op-linux-31c37a6f21d86e6bca095b71d603ed543ae070ad.tar.gz talos-op-linux-31c37a6f21d86e6bca095b71d603ed543ae070ad.zip | |
[SCSI] fcoe: Fix write errors on NPIV ports
SCSI errors were generated while writing to LUNs
connected via NPIV ports.
Debugging this it was found that the FCoE packets
transmitted via the NPIV ports were not tagged with
correct user priority as negotiated with peer by DCB
agent. This resulted in FCoE traffic going with priority
zero(0) that did not have priority flow control (PFC)
enabled for it. The initiator after transferring data
to the target never saw any reply indicating the transfer
was complete. This resulted in error recovery (ABTS) and
SCSI command retries by the scsi-mid layer; eventually
resulting in I/O errors.
This patch fixes this issue by keeping the FCoE user
priority information in the fcoe_interface instance
that is common for both the physical port as well as
NPIV ports connected to that physical port; instead
of storing it in fcoe_port structure that has a per
port instance.
Signed-off-by: Neerav Parikh <Neerav.Parikh@intel.com>
Acked-by: Yi Zou <yi.zou@intel.com>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Tested-by: Marcus Dennis <marcusx.e.dennis@intel.com>
Signed-off-by: Robert Love <robert.w.love@intel.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'include/scsi')
| -rw-r--r-- | include/scsi/libfcoe.h | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/include/scsi/libfcoe.h b/include/scsi/libfcoe.h index 22b07cc99808..8742d853a3b8 100644 --- a/include/scsi/libfcoe.h +++ b/include/scsi/libfcoe.h @@ -327,7 +327,6 @@ struct fcoe_percpu_s { * @lport: The associated local port * @fcoe_pending_queue: The pending Rx queue of skbs * @fcoe_pending_queue_active: Indicates if the pending queue is active - * @priority: Packet priority (DCB) * @max_queue_depth: Max queue depth of pending queue * @min_queue_depth: Min queue depth of pending queue * @timer: The queue timer @@ -343,7 +342,6 @@ struct fcoe_port { struct fc_lport *lport; struct sk_buff_head fcoe_pending_queue; u8 fcoe_pending_queue_active; - u8 priority; u32 max_queue_depth; u32 min_queue_depth; struct timer_list timer; |
