hyperv: Add comments for the extended buffer after RNDIS message

Reported-by: Olaf Hering <olaf@aepfle.de>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/hyperv/rndis_filter.c b/drivers/net/hyperv/rndis_filter.c
index 1e88a1095934a6d7b62c84cf1fff0e083f088881..06f8601f32fcb8eb82ce6429e08438f451e05e7d 100644 (file)
--- a/drivers/net/hyperv/rndis_filter.c
+++ b/drivers/net/hyperv/rndis_filter.c
@@ -46,8 +46,14 @@ struct rndis_request {
        /* Simplify allocation by having a netvsc packet inline */
        struct hv_netvsc_packet pkt;
        struct hv_page_buffer buf;
-       /* FIXME: We assumed a fixed size request here. */
+
        struct rndis_message request_msg;
+       /*
+        * The buffer for the extended info after the RNDIS message. It's
+        * referenced based on the data offset in the RNDIS message. Its size
+        * is enough for current needs, and should be sufficient for the near
+        * future.
+        */
        u8 ext[100];
 };