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-rw-r--r--drivers/net/hyperv/netvsc.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/net/hyperv/netvsc.c b/drivers/net/hyperv/netvsc.c
index 02bab9a7c9ff..059fc5231601 100644
--- a/drivers/net/hyperv/netvsc.c
+++ b/drivers/net/hyperv/netvsc.c
@@ -867,6 +867,14 @@ int netvsc_send(struct hv_device *device,
packet->send_buf_index = NETVSC_INVALID_INDEX;
packet->cp_partial = false;
+ /* Send control message directly without accessing msd (Multi-Send
+ * Data) field which may be changed during data packet processing.
+ */
+ if (!skb) {
+ cur_send = packet;
+ goto send_now;
+ }
+
msdp = &net_device->msd[q_idx];
/* batch packets in send buffer if possible */
@@ -939,6 +947,7 @@ int netvsc_send(struct hv_device *device,
}
}
+send_now:
if (cur_send)
ret = netvsc_send_pkt(cur_send, net_device, pb, skb);