diff mbox series

[v2] net/netvsc: ignore NVS_TYPE_TXTBL_NOTE while executing a sync command

Message ID 1607719701-3646-1-git-send-email-longli@linuxonhyperv.com (mailing list archive)
State Accepted, archived
Delegated to: Ferruh Yigit
Headers show
Series [v2] net/netvsc: ignore NVS_TYPE_TXTBL_NOTE while executing a sync command | expand

Checks

Context Check Description
ci/Intel-compilation success Compilation OK
ci/iol-testing success Testing PASS
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-intel-Functional success Functional Testing PASS
ci/travis-robot success Travis build: passed
ci/iol-broadcom-Functional success Functional Testing PASS
ci/iol-broadcom-Performance success Performance Testing PASS
ci/checkpatch warning coding style issues

Commit Message

Long Li Dec. 11, 2020, 8:48 p.m. UTC
From: Long Li <longli@microsoft.com>

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.

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

Comments

Ferruh Yigit Dec. 15, 2020, 5:47 p.m. UTC | #1
On 12/11/2020 8:48 PM, Long Li wrote:
> From: Long Li <longli@microsoft.com>
> 
> 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.
> 
> Cc: stable@dpdk.org
> Signed-off-by: Long Li <longli@microsoft.com>

Applied to dpdk-next-net/main, thanks.
diff mbox series

Patch

diff --git a/drivers/net/netvsc/hn_nvs.c b/drivers/net/netvsc/hn_nvs.c
index a0ee7d8bfa..a97591d16b 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;
 	}