[TCP]: Update comment about highest_sack validity

[linux-2.6-omap-h63xx.git] / include / linux / tcp.h

diff --git a/include/linux/tcp.h b/include/linux/tcp.h
index 1f12fa0b67d7074add85604fee70a85ace330efb..f8cf090e8f4924c2d683879fe12164522dbda3f4 100644 (file)
--- a/include/linux/tcp.h
+++ b/include/linux/tcp.h
@@ -332,7 +332,8 @@ struct tcp_sock {
 
        struct tcp_sack_block_wire recv_sack_cache[4];
 
-       u32     highest_sack;   /* Start seq of globally highest revd SACK (valid only in slowpath) */
+       u32     highest_sack;   /* Start seq of globally highest revd SACK
+                                * (validity guaranteed only if sacked_out > 0) */
 
        /* from STCP, retrans queue hinting */
        struct sk_buff* lost_skb_hint;