linux-toradex.git/include/net/tcp.h, branch v3.2-rt10

net: make the tcp and udp file_operations for the /proc stuff const

2011-11-01T21:56:14+00:00

the tcp and udp code creates a set of struct file_operations at runtime
while it can also be done at compile time, with the added benefit of then
having these file operations be const.

the trickiest part was to get the "THIS_MODULE" reference right; the naive
method of declaring a struct in the place of registration would not work
for this reason.

Signed-off-by: Arjan van de Ven 
Signed-off-by: David S. Miller

TCP: remove TCP_DEBUG

2011-10-24T21:36:08+00:00

It was enabled by default and the messages guarded
by the define are useful.

Signed-off-by: Flavio Leitner 
Signed-off-by: David S. Miller

tcp: md5: add more const attributes

2011-10-24T06:46:04+00:00

Now tcp_md5_hash_header() has a const tcphdr argument, we can add more
const attributes to callers.

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

tcp: md5: dont write skb head in tcp_md5_hash_header()

2011-10-24T05:52:35+00:00

tcp_md5_hash_header() writes into skb header a temporary zero value,
this might confuse other users of this area.

Since tcphdr is small (20 bytes), copy it in a temporary variable and
make the change in the copy.

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

tcp: add const qualifiers where possible

2011-10-21T09:22:42+00:00

Adding const qualifiers to pointers can ease code review, and spot some
bugs. It might allow compiler to optimize code further.

For example, is it legal to temporary write a null cksum into tcphdr
in tcp_md5_hash_header() ? I am afraid a sniffer could catch the
temporary null value...

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

tcp: rename tcp_skb_cb flags

2011-09-27T17:25:05+00:00

Rename struct tcp_skb_cb "flags" to "tcp_flags" to ease code review and
maintenance.

Its content is a combination of FIN/SYN/RST/PSH/ACK/URG/ECE/CWR flags

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

tcp: unalias tcp_skb_cb flags and ip_dsfield

2011-09-27T06:20:08+00:00

struct tcp_skb_cb contains a "flags" field containing either tcp flags
or IP dsfield depending on context (input or output path)

Introduce ip_dsfield to make the difference clear and ease maintenance.
If later we want to save space, we can union flags/ip_dsfield

Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller

tcp: ECN blackhole should not force quickack mode

2011-09-27T04:58:44+00:00

While playing with a new ADSL box at home, I discovered that ECN
blackhole can trigger suboptimal quickack mode on linux : We send one
ACK for each incoming data frame, without any delay and eventual
piggyback.

This is because TCP_ECN_check_ce() considers that if no ECT is seen on a
segment, this is because this segment was a retransmit.

Refine this heuristic and apply it only if we seen ECT in a previous
segment, to detect ECN blackhole at IP level.

Signed-off-by: Eric Dumazet 
CC: Jamal Hadi Salim 
CC: Jerry Chu 
CC: Ilpo Järvinen 
CC: Jim Gettys 
CC: Dave Taht 
Acked-by: Ilpo Järvinen 
Signed-off-by: David S. Miller

Merge branch 'master' of github.com:davem330/net

2011-09-22T07:23:13+00:00

Conflicts:
	MAINTAINERS
	drivers/net/Kconfig
	drivers/net/ethernet/broadcom/bnx2x/bnx2x_link.c
	drivers/net/ethernet/broadcom/tg3.c
	drivers/net/wireless/iwlwifi/iwl-pci.c
	drivers/net/wireless/iwlwifi/iwl-trans-tx-pcie.c
	drivers/net/wireless/rt2x00/rt2800usb.c
	drivers/net/wireless/wl12xx/main.c

tcp: fix build error if !CONFIG_SYN_COOKIES

2011-09-19T01:48:01+00:00

commit 946cedccbd7387 (tcp: Change possible SYN flooding messages)
added a build error if CONFIG_SYN_COOKIES=n

Reported-by: Markus Trippelsdorf 
Signed-off-by: Eric Dumazet 
Signed-off-by: David S. Miller