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 eeb82ab..03b6cc1 100644 (file)
--- 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;
        }