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tcp: Remove redundant checks when setting eff_sacks

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Remove redundant checks when setting eff_sacks and make the number of SACKs a
compile time constant. Now that the options code knows how many SACK blocks can
fit in the header, we don't need to have the SACK code guessing at it.

Signed-off-by: Adam Langley <agl@imperialviolet.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Adam Langley 2008-07-19 00:07:02 -07:00 • committed by David S. Miller
parent 33ad798c92
commit 4389dded77
2 changed files with 16 additions and 15 deletions
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6
include/linux/tcp.h
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@ -224,6 +224,12 @@ struct tcp_options_received {
u16 mss_clamp; /* Maximal mss, negotiated at connection setup */
};
/* This is the max number of SACKS that we'll generate and process. It's safe
* to increse this, although since:
* size = TCPOLEN_SACK_BASE_ALIGNED (4) + n * TCPOLEN_SACK_PERBLOCK (8)
* only four options will fit in a standard TCP header */
#define TCP_NUM_SACKS 4
struct tcp_request_sock {
struct inet_request_sock req;
#ifdef CONFIG_TCP_MD5SIG