linux-toradex.git/include/net/tcp.h, branch v2.6.27.24

tcp: options clean up

2008-07-19T07:04:31+00:00

This should fix the following bugs:
  * Connections with MD5 signatures produce invalid packets whenever SACK
    options are included
  * MD5 signatures are counted twice in the MSS calculations

Behaviour changes:
  * A SYN with MD5 + SACK + TS elicits a SYNACK with MD5 + SACK

    This is because we can't fit any SACK blocks in a packet with MD5 + TS
    options. There was discussion about disabling SACK rather than TS in
    order to fit in better with old, buggy kernels, but that was deemed to
    be unnecessary.

  * SYNs with MD5 don't include a TS option

    See above.

Additionally, it removes a bunch of duplicated logic for calculating options,
which should help avoid these sort of issues in the future.

Signed-off-by: Adam Langley 
Signed-off-by: David S. Miller

tcp: Fix MD5 signatures for non-linear skbs

2008-07-19T07:01:42+00:00

Currently, the MD5 code assumes that the SKBs are linear and, in the case
that they aren't, happily goes off and hashes off the end of the SKB and
into random memory.

Reported by Stephen Hemminger in [1]. Advice thanks to Stephen and Evgeniy
Polyakov. Also includes a couple of missed route_caps from Stephen's patch
in [2].

[1] http://marc.info/?l=linux-netdev&m=121445989106145&w=2
[2] http://marc.info/?l=linux-netdev&m=121459157816964&w=2

Signed-off-by: Adam Langley 
Acked-by: Stephen Hemminger 
Signed-off-by: David S. Miller

mib: put tcp statistics on struct net

2008-07-18T11:02:08+00:00

Proc temporary uses stats from init_net.

BTW, TCP_XXX_STATS are beautiful (w/o do { } while (0) facing) again :)

Signed-off-by: Pavel Emelyanov 
Signed-off-by: David S. Miller

mib: add net to NET_INC_STATS_BH

2008-07-17T03:31:16+00:00

Signed-off-by: Pavel Emelyanov 
Signed-off-by: David S. Miller

sock: add net to prot->enter_memory_pressure callback

2008-07-17T03:28:10+00:00

The tcp_enter_memory_pressure calls NET_INC_STATS, but doesn't
have where to get the net from.

I decided to add a sk argument, not the net itself, only to factor
all the required sock_net(sk) calls inside the enter_memory_pressure 
callback itself.

Signed-off-by: Pavel Emelyanov 
Signed-off-by: David S. Miller

mib: add net to TCP_ADD_STATS_USER

2008-07-17T03:27:38+00:00

Now we're done with the TCP_XXX_STATS macros.

Signed-off-by: Pavel Emelyanov 
Signed-off-by: David S. Miller

mib: add net to TCP_DEC_STATS

2008-07-17T03:22:46+00:00

Signed-off-by: Pavel Emelyanov 
Signed-off-by: David S. Miller

mib: add net to TCP_INC_STATS_BH

2008-07-17T03:22:25+00:00

Same as before - the sock is always there to get the net from,
but there are also some places with the net already saved on 
the stack.

Signed-off-by: Pavel Emelyanov 
Signed-off-by: David S. Miller

mib: add net to TCP_INC_STATS

2008-07-17T03:22:04+00:00

Fortunately (almost) all the TCP code has a sock to get the net from :)

Signed-off-by: Pavel Emelyanov 
Signed-off-by: David S. Miller

tcp: add net to tcp_mib_init

2008-07-17T03:21:42+00:00

This one sets TCP MIBs after zeroing them, and thus requires
the net.

The existing single caller can use init_net (temporarily).

Signed-off-by: Pavel Emelyanov 
Signed-off-by: David S. Miller