linux-toradex.git/include/net/ipv6.h, branch v2.6.22.7

[XFRM]: Allow packet drops during larval state resolution.

2007-05-25T01:17:54+00:00

The current IPSEC rule resolution behavior we have does not work for a
lot of people, even though technically it's an improvement from the
-EAGAIN buisness we had before.

Right now we'll block until the key manager resolves the route.  That
works for simple cases, but many folks would rather packets get
silently dropped until the key manager resolves the IPSEC rules.

We can't tell these folks to "set the socket non-blocking" because
they don't have control over the non-block setting of things like the
sockets used to resolve DNS deep inside of the resolver libraries in
libc.

With that in mind I coded up the patch below with some help from
Herbert Xu which provides packet-drop behavior during larval state
resolution, controllable via sysctl and off by default.

This lays the framework to either:

1) Make this default at some point or...

2) Move this logic into xfrm{4,6}_policy.c and implement the
   ARP-like resolution queue we've all been dreaming of.
   The idea would be to queue packets to the policy, then
   once the larval state is resolved by the key manager we
   re-resolve the route and push the packets out.  The
   packets would timeout if the rule didn't get resolved
   in a certain amount of time.

Signed-off-by: David S. Miller

[IPV6]: Some cleanups in include/net/ipv6.h

2007-05-04T00:39:04+00:00

1) struct ip6_flowlabel : moves 'users' field to avoid two 32bits
   holes for 64bit arches. Shrinks by 8 bytes sizeof(struct
   ip6_flowlabel)

2) ipv6_addr_cmp() and ipv6_addr_copy() dont need (void *) casts :
   Compiler might take into account natural alignement of in6_addr
   structs to emit better code for memcpy()/memcmp() Casts to (void *)
   force byte accesses.

3) ipv6_addr_prefix() optimization :

Better to clear whole struct, as compiler can emit better code for
memset(addr, 0, 16) (2 stores on x86_64), and avoid some conditional
branches.

# size vmlinux.after vmlinux.before
   text    data     bss     dec     hex filename
5262262  647612  557432 6467306  62aeea vmlinux.after
5262550  647612  557432 6467594  62b00a vmlinux.before

thats 288 bytes saved.

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

[IPV6]: Get rid of __HAVE_ARCH_ADDR_SET.

2007-05-03T10:08:43+00:00

__HAVE_ARCH_ADDR_SET seems unused these days, just get rid of it.

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

[IPV6]: Consolidate common SNMP code

2007-04-26T05:29:52+00:00

This patch moves the non-proc SNMP code into addrconf.c and reuses
IPv4 SNMP code where applicable.

As a result we can skip proc.o if /proc is disabled.

Note that I've made a number of functions static since they're only
used by addrconf.c for now.  If they ever get used elsewhere we can
always remove the static.

Signed-off-by: Herbert Xu 
Acked-by: YOSHIFUJI Hideaki 
Signed-off-by: David S. Miller

[IPV6] SNMP: Use put_unaligned() instead of memcpy().

2007-04-26T05:29:37+00:00

Hint from David Miller .

Signed-off-by: YOSHIFUJI Hideaki 
Signed-off-by: David S. Miller

[IPV6] SNMP: Avoid unaligned accesses.

2007-04-26T05:29:35+00:00

Because stats pointer may not be aligned for u64, use memcpy
to fill u64 values.
Issue reported by David Miller .

Signed-off-by: YOSHIFUJI Hideaki

[IPV6] SNMP: Netlink interface.

2007-04-26T05:29:10+00:00

Signed-off-by: YOSHIFUJI Hideaki 
Signed-off-by: David S. Miller

[IPV6]: __ipv6_addr_diff() annotations and cleanup.

2006-12-03T05:22:53+00:00

Signed-off-by: Al Viro 
Signed-off-by: David S. Miller

[IPV6]: Misc endianness annotations.

2006-12-03T05:22:52+00:00

Signed-off-by: Al Viro 
Signed-off-by: David S. Miller

[NET]: Supporting UDP-Lite (RFC 3828) in Linux

2006-12-03T05:22:46+00:00

This is a revision of the previously submitted patch, which alters
the way files are organized and compiled in the following manner:

	* UDP and UDP-Lite now use separate object files
	* source file dependencies resolved via header files
	  net/ipv{4,6}/udp_impl.h
	* order of inclusion files in udp.c/udplite.c adapted
	  accordingly

[NET/IPv4]: Support for the UDP-Lite protocol (RFC 3828)

This patch adds support for UDP-Lite to the IPv4 stack, provided as an
extension to the existing UDPv4 code:
        * generic routines are all located in net/ipv4/udp.c
        * UDP-Lite specific routines are in net/ipv4/udplite.c
        * MIB/statistics support in /proc/net/snmp and /proc/net/udplite
        * shared API with extensions for partial checksum coverage

[NET/IPv6]: Extension for UDP-Lite over IPv6

It extends the existing UDPv6 code base with support for UDP-Lite
in the same manner as per UDPv4. In particular,
        * UDPv6 generic and shared code is in net/ipv6/udp.c
        * UDP-Litev6 specific extensions are in net/ipv6/udplite.c
        * MIB/statistics support in /proc/net/snmp6 and /proc/net/udplite6
        * support for IPV6_ADDRFORM
        * aligned the coding style of protocol initialisation with af_inet6.c
        * made the error handling in udpv6_queue_rcv_skb consistent;
          to return `-1' on error on all error cases
        * consolidation of shared code

[NET]: UDP-Lite Documentation and basic XFRM/Netfilter support

The UDP-Lite patch further provides
        * API documentation for UDP-Lite
        * basic xfrm support
        * basic netfilter support for IPv4 and IPv6 (LOG target)

Signed-off-by: Gerrit Renker 
Signed-off-by: David S. Miller