[dpdk-stable] patch 'net/netvsc: ignore unsupported packet on sync command' has been queued to stable release 20.11.1

[luca.boccassi at gmail.com]

Hi,

FYI, your patch has been queued to stable release 20.11.1

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 02/07/21. 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/bluca/dpdk-stable

This queued commit can be viewed at:
https://github.com/bluca/dpdk-stable/commit/e97bb2a91151415c939cfeb9eff73c5724625408

Thanks.

Luca Boccassi

---
>From e97bb2a91151415c939cfeb9eff73c5724625408 Mon Sep 17 00:00:00 2001
From: Long Li <longli at microsoft.com>
Date: Fri, 11 Dec 2020 12:48:21 -0800
Subject: [PATCH] net/netvsc: ignore unsupported packet on sync command

[ upstream commit 0a4533facb49b0ca0d7520fee09270a82017e8fe ]

On netvsc initialization, the host VSP may send a NVS_TYPE_TXTBL_NOTE
packet while executing a VSP command synchronously.

Instead of returning an error, ignore this packet as we don't use it for
DPDK.

Signed-off-by: Long Li <longli at microsoft.com>
---
 drivers/net/netvsc/hn_nvs.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/netvsc/hn_nvs.c b/drivers/net/netvsc/hn_nvs.c
index eeb82ab9ee..03b6cc1551 100644
--- a/drivers/net/netvsc/hn_nvs.c
+++ b/drivers/net/netvsc/hn_nvs.c
@@ -97,8 +97,13 @@ __hn_nvs_execute(struct hn_data *hv,
 	hdr = (struct hn_nvs_hdr *)buffer;
 
 	/* Silently drop received packets while waiting for response */
-	if (hdr->type == NVS_TYPE_RNDIS) {
+	switch (hdr->type) {
+	case NVS_TYPE_RNDIS:
 		hn_nvs_ack_rxbuf(chan, xactid);
+		/* fallthrough */
+
+	case NVS_TYPE_TXTBL_NOTE:
+		PMD_DRV_LOG(DEBUG, "discard packet type 0x%x", hdr->type);
 		goto retry;
 	}
 
-- 
2.29.2

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2021-02-05 11:18:31.579464106 +0000
+++ 0051-net-netvsc-ignore-unsupported-packet-on-sync-command.patch	2021-02-05 11:18:28.774690503 +0000
@@ -1 +1 @@
-From 0a4533facb49b0ca0d7520fee09270a82017e8fe Mon Sep 17 00:00:00 2001
+From e97bb2a91151415c939cfeb9eff73c5724625408 Mon Sep 17 00:00:00 2001
@@ -5,0 +6,2 @@
+[ upstream commit 0a4533facb49b0ca0d7520fee09270a82017e8fe ]
+
@@ -11,2 +12,0 @@
-
-Cc: stable at dpdk.org