[dpdk-stable] patch 'net/iavf: fix TSO max segment size' has been queued to stable release 19.11.9

[Christian Ehrhardt]

Hi,

FYI, your patch has been queued to stable release 19.11.9

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 05/19/21. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://github.com/cpaelzer/dpdk-stable-queue

This queued commit can be viewed at:
https://github.com/cpaelzer/dpdk-stable-queue/commit/bd99b278f18e6957d2b0cb2fe6ae15c74f0772f8

Thanks.

Christian Ehrhardt <christian.ehrhardt at canonical.com>

---
>From bd99b278f18e6957d2b0cb2fe6ae15c74f0772f8 Mon Sep 17 00:00:00 2001
From: Qi Zhang <qi.z.zhang at intel.com>
Date: Mon, 1 Mar 2021 15:57:14 +0800
Subject: [PATCH] net/iavf: fix TSO max segment size
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
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[ upstream commit 6d05fc905df216b78e4e3db935927a53a638c6d0 ]

According to Intel® AVF spec
(https://www.intel.com/content/dam/
www/public/us/en/documents/product-specifications/
ethernet-adaptive-virtual-function-hardware-spec.pdf)
section 2.2.2.3:
The max segment size(MSS) of TSO should not be set lower than 88.

Fixes: a2b29a7733ef ("net/avf: enable basic Rx Tx")

Signed-off-by: Qi Zhang <qi.z.zhang at intel.com>
Acked-by: Beilei Xing <beilei.xing at intel.com>
---
 drivers/net/iavf/iavf_rxtx.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/iavf/iavf_rxtx.h b/drivers/net/iavf/iavf_rxtx.h
index 60d02c521f..c3baf93861 100644
--- a/drivers/net/iavf/iavf_rxtx.h
+++ b/drivers/net/iavf/iavf_rxtx.h
@@ -34,7 +34,7 @@
 #define DEFAULT_TX_RS_THRESH     32
 #define DEFAULT_TX_FREE_THRESH   32
 
-#define IAVF_MIN_TSO_MSS          256
+#define IAVF_MIN_TSO_MSS          88
 #define IAVF_MAX_TSO_MSS          9668
 #define IAVF_TSO_MAX_SEG          UINT8_MAX
 #define IAVF_TX_MAX_MTU_SEG       8
-- 
2.31.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-05-17 17:40:32.236328788 +0200
+++ 0069-net-iavf-fix-TSO-max-segment-size.patch	2021-05-17 17:40:29.235809979 +0200
@@ -1 +1 @@
-From 6d05fc905df216b78e4e3db935927a53a638c6d0 Mon Sep 17 00:00:00 2001
+From bd99b278f18e6957d2b0cb2fe6ae15c74f0772f8 Mon Sep 17 00:00:00 2001
@@ -8,0 +9,2 @@
+[ upstream commit 6d05fc905df216b78e4e3db935927a53a638c6d0 ]
+
@@ -17 +18,0 @@
-Cc: stable at dpdk.org
@@ -26 +27 @@
-index 5377459eae..4fbd847034 100644
+index 60d02c521f..c3baf93861 100644