[netdrvr] via-velocity: misc. cleanups

[linux-2.6] / net / ipv4 / tcp.c

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 804458712d881dee4065f2e4cbd7e7c99296d545..f6a2d9223d07ca1503aecfdaa9124e09b8e22247 100644 (file)
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2170,8 +2170,19 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb, int features)
 
        if (skb_gso_ok(skb, features | NETIF_F_GSO_ROBUST)) {
                /* Packet is from an untrusted source, reset gso_segs. */
-               int mss = skb_shinfo(skb)->gso_size;
+               int type = skb_shinfo(skb)->gso_type;
+               int mss;
+
+               if (unlikely(type &
+                            ~(SKB_GSO_TCPV4 |
+                              SKB_GSO_DODGY |
+                              SKB_GSO_TCP_ECN |
+                              SKB_GSO_TCPV6 |
+                              0) ||
+                            !(type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6))))
+                       goto out;
 
+               mss = skb_shinfo(skb)->gso_size;
                skb_shinfo(skb)->gso_segs = (skb->len + mss - 1) / mss;
 
                segs = NULL;