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tcp: fix comment for tp->highest_sack 

There was an off-by-one error in the comments describing the
highest_sack field in struct tcp_sock. The comments previously claimed
that it was the "start sequence of the highest skb with SACKed
bit". This commit fixes the comments to note that it is the "start
sequence of the skb just *after* the highest skb with SACKed bit".

Signed-off-by: Neal Cardwell <ncardwell@google.com>
Acked-by: Ilpo Järvinen <ilpo.jarvinen@helsinki.fi>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Neal Cardwell 2012-02-27 17:52:52 -05:00 committed by David S. Miller
parent eea79e0713
commit ecb9719236
2 changed files with 5 additions and 3 deletions
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3
include/linux/tcp.h
View File

@ -412,7 +412,8 @@ struct tcp_sock {
struct tcp_sack_block recv_sack_cache[4];
struct sk_buff *highest_sack; /* highest skb with SACK received
struct sk_buff *highest_sack; /* skb just after the highest
* skb with SACKed bit set
* (validity guaranteed only if
* sacked_out > 0)
*/

5
include/net/tcp.h
View File

@ -1364,8 +1364,9 @@ static inline void tcp_push_pending_frames(struct sock *sk)
}
}
/* Start sequence of the highest skb with SACKed bit, valid only if
* sacked > 0 or when the caller has ensured validity by itself.
/* Start sequence of the skb just after the highest skb with SACKed
* bit, valid only if sacked_out > 0 or when the caller has ensured
* validity by itself.
*/
static inline u32 tcp_highest_sack_seq(struct tcp_sock *tp)
{