From: Long Li <longli@microsoft.com>
Date: Fri, 11 Dec 2020 20:48:21 +0000 (-0800)
Subject: net/netvsc: ignore unsupported packet on sync command
X-Git-Url: http://git.droids-corp.org/?a=commitdiff_plain;h=0a4533facb49b0ca0d7520fee09270a82017e8fe;p=dpdk.git

net/netvsc: ignore unsupported packet on sync command

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>
---

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;
 	}