linux.git/net/ipv4/ip_output.c, branch v2.6.24

[INET]: Fix truesize setting in ip_append_data

2008-01-23T11:11:43+00:00

As it is ip_append_data only counts page fragments to the skb that
allocated it.  As such it means that the first skb gets hit with a
4K charge even though it might have only used a fraction of it while
all subsequent skb's that use the same page gets away with no charge
at all.

This bug was exposed by the UDP accounting patch.

[ The wmem_alloc bumping needs to be moved with the truesize,
  noticed by Takahiro Yasui.  -DaveM ]

Signed-off-by: Herbert Xu 
Signed-off-by: David S. Miller

[IPV4]: Add missing skb->truesize increment in ip_append_page().

2008-01-23T11:11:40+00:00

And as noted by Takahiro Yasui, we thus need to bump the
sk->sk_wmem_alloc at this spot as well.

Signed-off-by: David S. Miller

[IPV4]: Consolidate the ip cork destruction in ip_output.c

2007-11-07T12:08:25+00:00

The ip_push_pending_frames and ip_flush_pending_frames do the
same things to flush the sock's cork. Move this into a separate
function and save ~80 bytes from the .text

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

[NET]: Treat the sign of the result of skb_headroom() consistently

2007-10-24T04:27:55+00:00

In some places, the result of skb_headroom() is compared to an unsigned
integer, and in others, the result is compared to a signed integer.  Make
the comparisons consistent and correct.

Signed-off-by: Chuck Lever 
Signed-off-by: David S. Miller

[IPV4]: Uninline netfilter okfns

2007-10-15T19:26:35+00:00

Now that we don't pass double skb pointers to nf_hook_slow anymore, gcc
can generate tail calls for some of the netfilter hook okfn invocations,
so there is no need to inline the functions anymore. This caused huge
code bloat since we ended up with one inlined version and one out-of-line
version since we pass the address to nf_hook_slow.

Before:
   text    data     bss     dec     hex filename
8997385 1016524  524652 10538561         a0ce41 vmlinux

After:
   text    data     bss     dec     hex filename
8994009 1016524  524652 10535185         a0c111 vmlinux
-------------------------------------------------------
  -3376

All cases have been verified to generate tail-calls with and without
netfilter. The okfns in ipmr and xfrm4_input still remain inline because
gcc can't generate tail-calls for them.

Signed-off-by: Patrick McHardy 
Signed-off-by: David S. Miller

[NET]: Move hardware header operations out of netdevice.

2007-10-10T23:52:52+00:00

Since hardware header operations are part of the protocol class
not the device instance, make them into a separate object and
save memory.

Signed-off-by: Stephen Hemminger 
Signed-off-by: David S. Miller

[IPV4]: Add ICMPMsgStats MIB (RFC 4293)

2007-10-10T23:51:28+00:00

Background: RFC 4293 deprecates existing individual, named ICMP
type counters to be replaced with the ICMPMsgStatsTable. This table
includes entries for both IPv4 and IPv6, and requires counting of all
ICMP types, whether or not the machine implements the type.

These patches "remove" (but not really) the existing counters, and
replace them with the ICMPMsgStats tables for v4 and v6.
It includes the named counters in the /proc places they were, but gets the
values for them from the new tables. It also counts packets generated
from raw socket output (e.g., OutEchoes, MLD queries, RA's from
radvd, etc).

Changes:
1) create icmpmsg_statistics mib
2) create icmpv6msg_statistics mib
3) modify existing counters to use these
4) modify /proc/net/snmp to add "IcmpMsg" with all ICMP types
        listed by number for easy SNMP parsing
5) modify /proc/net/snmp printing for "Icmp" to get the named data
        from new counters.

Signed-off-by: David L Stevens 
Signed-off-by: David S. Miller

[IPV4]: Clean up duplicate includes in net/ipv4/

2007-08-14T05:52:02+00:00

This patch cleans up duplicate includes in
	net/ipv4/

Signed-off-by: Jesper Juhl 
Signed-off-by: Andrew Morton 
Signed-off-by: David S. Miller

[NETFILTER]: x_tables: add TRACE target

2007-07-11T05:17:14+00:00

The TRACE target can be used to follow IP and IPv6 packets through
the ruleset.

Signed-off-by: Jozsef Kadlecsik 
Signed-off-by: Patrick NcHardy 
Signed-off-by: David S. Miller

[NET]: IPV6 checksum offloading in network devices

2007-07-11T05:15:52+00:00

The existing model for checksum offload does not correctly handle
devices that can offload IPV4 and IPV6 only. The NETIF_F_HW_CSUM flag
implies device can do any arbitrary protocol.

This patch:
 * adds NETIF_F_IPV6_CSUM for those devices
 * fixes bnx2 and tg3 devices that need it
 * add NETIF_F_IPV6_CSUM to ipv6 output (incl GSO)
 * fixes assumptions about NETIF_F_ALL_CSUM in nat
 * adjusts bridge union of checksumming computation

Signed-off-by: David S. Miller