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| author | Vasu Dev <vasu.dev@intel.com> | 2012-07-06 10:40:15 -0700 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2012-07-20 08:58:56 +0100 |
| commit | ac166d2fbd2d0c295454bcee7b3c930cb96e72cc (patch) | |
| tree | 24f6afbd1e88f2d0b32fb77a667a0f89e740af49 | |
| parent | db95fc004ea50f661a98c9f25585c0a734b5c238 (diff) | |
| download | linux-ac166d2fbd2d0c295454bcee7b3c930cb96e72cc.tar.gz linux-ac166d2fbd2d0c295454bcee7b3c930cb96e72cc.tar.bz2 linux-ac166d2fbd2d0c295454bcee7b3c930cb96e72cc.zip | |
[SCSI] libfc: fix retries with FDMI lport states
The FC-GS-3 sepc requires to wait for least 3 times R_A_TOV per
sec 4.6.1 "If the Requesting_CT does not receive a Response
CT_IU from the Responding_CT within three times R_A_TOV,
it shall consider this to be a protocol error."
This means added four new states with management server
could add significant delay with multiple retries
on default 12 second timeout(3 * R_A_TOV), so instead
just skip these states on very first timeout on any of
these states to not stuck with states for such longer
period.
Signed-off-by: Vasu Dev <vasu.dev@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>
| -rw-r--r-- | drivers/scsi/libfc/fc_lport.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/scsi/libfc/fc_lport.c b/drivers/scsi/libfc/fc_lport.c index d385d1147889..f04d15c67df3 100644 --- a/drivers/scsi/libfc/fc_lport.c +++ b/drivers/scsi/libfc/fc_lport.c @@ -1598,8 +1598,9 @@ static void fc_lport_timeout(struct work_struct *work) case LPORT_ST_RPA: case LPORT_ST_DHBA: case LPORT_ST_DPRT: - fc_lport_enter_ms(lport, lport->state); - break; + FC_LPORT_DBG(lport, "Skipping lport state %s to SCR\n", + fc_lport_state(lport)); + /* fall thru */ case LPORT_ST_SCR: fc_lport_enter_scr(lport); break; |