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From: Andrew Rybchenko <arybchenko@solarflare.com>
To: <dev@dpdk.org>
Cc: Mark Spender <mspender@solarflare.com>
Subject: [dpdk-dev] [PATCH 28/53] net/sfc/base: ignore error in completion event on MCDIv2 HW
Date: Thu, 16 Nov 2017 08:04:16 +0000	[thread overview]
Message-ID: <1510819481-6809-29-git-send-email-arybchenko@solarflare.com> (raw)
In-Reply-To: <1510819481-6809-1-git-send-email-arybchenko@solarflare.com>

From: Mark Spender <mspender@solarflare.com>

With MCDIv2, the reponse length can be to big to fit into the
CMDDONE_DATALEN field in the MCDI completion event. But rather that
the length being truncated, it can overflow into the CMDDONE_ERRNO
field (this is a longstanding firmware bug). Hence the CMDDONE_ERRNO
field may not be valid.

It isn't necessary to use the value in the CMDDONE_ERRNO field though,
so it can be ignored. The actual error code is already read from the
response header on MCDIv2 capable hardware and stored in emr_rc, so
that can be used instead.

Signed-off-by: Mark Spender <mspender@solarflare.com>
Signed-off-by: Andrew Rybchenko <arybchenko@solarflare.com>
---
 drivers/net/sfc/base/efx_mcdi.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/net/sfc/base/efx_mcdi.c b/drivers/net/sfc/base/efx_mcdi.c
index 888a47b..936ad25 100644
--- a/drivers/net/sfc/base/efx_mcdi.c
+++ b/drivers/net/sfc/base/efx_mcdi.c
@@ -793,9 +793,8 @@ efx_mcdi_ev_cpl(
 			emrp->emr_rc = 0;
 		}
 	}
-	if (errcode == 0) {
+	if (emrp->emr_rc == 0)
 		efx_mcdi_finish_response(enp, emrp);
-	}
 
 	emtp->emt_ev_cpl(emtp->emt_context);
 }
-- 
2.7.4

  parent reply	other threads:[~2017-11-16  8:05 UTC|newest]

Thread overview: 71+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-11-16  8:03 [dpdk-dev] [PATCH 00/53] net/sfc: base driver update Andrew Rybchenko
2017-11-16  8:03 ` [dpdk-dev] [PATCH 01/53] net/sfc/base: copy new header from firmwaresrc Andrew Rybchenko
2017-11-27 19:58   ` Ferruh Yigit
2017-11-29  9:49     ` Andrew Rybchenko
2017-11-27 19:58   ` Ferruh Yigit
2017-11-16  8:03 ` [dpdk-dev] [PATCH 02/53] net/sfc/base: do not use Tx desc push with TSO descriptors Andrew Rybchenko
2017-11-16  8:03 ` [dpdk-dev] [PATCH 03/53] net/sfc/base: fix result code in MCDI NVRAM update finish Andrew Rybchenko
2017-11-16  8:03 ` [dpdk-dev] [PATCH 04/53] net/sfc/base: simplify verify result handling Andrew Rybchenko
2017-11-16  8:03 ` [dpdk-dev] [PATCH 05/53] net/sfc/base: report verify result from RW finish callback Andrew Rybchenko
2017-11-16  8:03 ` [dpdk-dev] [PATCH 06/53] net/sfc/base: extend NVRAM RW finish to return verify result Andrew Rybchenko
2017-11-16  8:03 ` [dpdk-dev] [PATCH 07/53] net/sfc/base: rename firmware update verify result cap field Andrew Rybchenko
2017-11-16  8:03 ` [dpdk-dev] [PATCH 08/53] net/sfc/base: simplify NVRAM type to partition mappings Andrew Rybchenko
2017-11-16  8:03 ` [dpdk-dev] [PATCH 09/53] net/sfc/base: check NVRAM locking by partition ID Andrew Rybchenko
2017-11-16  8:03 ` [dpdk-dev] [PATCH 10/53] net/sfc/base: report correct partition write chunk size Andrew Rybchenko
2017-11-16  8:03 ` [dpdk-dev] [PATCH 11/53] net/sfc/base: fix check in NVRAM validate Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 12/53] net/sfc/base: precheck and verify flash writes Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 13/53] net/sfc/base: remove duplicate NVRAM asserts Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 14/53] net/sfc/base: quieten get version methods Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 15/53] net/sfc/base: fix PreFAST issues Andrew Rybchenko
2017-11-27 19:58   ` [dpdk-dev] [dpdk-stable] " Ferruh Yigit
2017-11-28 11:49     ` Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 16/53] net/sfc/base: add support for MUM/SUC firmware partitions Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 17/53] net/sfc/base: improve PS credits push function name Andrew Rybchenko
2017-11-27 19:59   ` Ferruh Yigit
2017-11-28  9:20     ` Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 18/53] net/sfc/base: improve RxQ label init prototype Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 19/53] net/sfc/base: add description of the PS packets layout Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 20/53] net/sfc/base: clarify meaning of Rx desc lbits in PS mode Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 21/53] net/sfc/base: optimize credits overflow check Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 22/53] net/sfc/base: provide simple access to RxQ state in EvQ Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 23/53] net/sfc/base: enforce packed stream fake buffer size Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 24/53] net/sfc/base: more accurately calculate number of PS credits Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 25/53] net/sfc/base: make MAC naming consistent with other modules Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 26/53] net/sfc/base: support inner checksum offload on transmit Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 27/53] net/sfc/base: use MCDIv2 for requests with too long response Andrew Rybchenko
2017-11-16  8:04 ` Andrew Rybchenko [this message]
2017-11-16  8:04 ` [dpdk-dev] [PATCH 29/53] net/sfc/base: request info about outer frame in Rx events Andrew Rybchenko
2017-11-27 19:57   ` Ferruh Yigit
2017-11-28 10:48     ` Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 30/53] net/sfc/base: remove assertion on no longer used define Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 31/53] net/sfc/base: improve names for EVQ descriptor counts Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 32/53] net/sfc/base: improve names for RXQ " Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 33/53] net/sfc/base: improve names for TXQ " Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 34/53] net/sfc/base: fix build issue with PHY LED control enabled Andrew Rybchenko
2017-11-27 19:59   ` [dpdk-dev] [dpdk-stable] " Ferruh Yigit
2017-11-16  8:04 ` [dpdk-dev] [PATCH 35/53] net/sfc/base: move Siena-specific defs to right header Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 36/53] net/sfc/base: run mkconfig.py to add a new sensors Andrew Rybchenko
2017-11-27 19:58   ` Ferruh Yigit
2017-11-28 12:01     ` Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 37/53] net/sfc/base: add support for " Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 38/53] net/sfc/base: remove unused defined for WPTR alignment Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 39/53] net/sfc/base: cstyle fixes Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 40/53] net/sfc/base: allow to use PHY stats on Huntington/Medford Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 41/53] net/sfc/base: fix diagnostics support build without Siena Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 42/53] net/sfc/base: fix probes in licensing support Andrew Rybchenko
2017-11-27 19:58   ` [dpdk-dev] [dpdk-stable] " Ferruh Yigit
2017-11-28 10:17     ` Andrew Rybchenko
2017-11-28 21:38       ` Ferruh Yigit
2017-11-29  9:51         ` Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 43/53] net/sfc/base: fix warnings from VS2015 C compiler (C4310) Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 44/53] net/sfc/base: fix warnings from VS2015 C compiler (C4244) Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 45/53] net/sfc/base: fix warnings from VS2015 C compiler (C4245) Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 46/53] net/sfc/base: fix warnings from VS2015 C compiler (C4100) Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 47/53] net/sfc/base: fix warnings from VS2015 C compiler (C4189) Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 48/53] net/sfc/base: fix warnings from VS2015 C compiler (C4057) Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 49/53] net/sfc/base: fix warnings from VS2015 C compiler (C4214) Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 50/53] net/sfc/base: remove obsolete check for pre-Siena hardware Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 51/53] net/sfc/base: expand on comment on number of queues field Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 52/53] net/sfc/base: fix PreFAST static analysis warning (C6001) Andrew Rybchenko
2017-11-16  8:04 ` [dpdk-dev] [PATCH 53/53] net/sfc/base: move BIU test code into Siena-specific file Andrew Rybchenko
2017-11-27 19:59 ` [dpdk-dev] [PATCH 00/53] net/sfc: base driver update Ferruh Yigit

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