linux.git/net/ipv4/ip_options.c, branch v2.6.26

[IPV4]: Convert do_gettimeofday() to getnstimeofday().

2008-04-21T09:34:08+00:00

What do_gettimeofday() does is to call getnstimeofday() and
to convert the result from timespec{} to timeval{}.
After that, these callers convert the result again to msec.
Use getnstimeofday() and convert the units at once.

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

[NET] NETNS: Omit net_device->nd_net without CONFIG_NET_NS.

2008-03-25T19:39:53+00:00

Introduce per-net_device inlines: dev_net(), dev_net_set().
Without CONFIG_NET_NS, no namespace other than &init_net exists.
Let's explicitly define them to help compiler optimizations.

Signed-off-by: YOSHIFUJI Hideaki

[NETNS]: Process IP layer in the context of the correct namespace.

2008-03-24T22:31:00+00:00

Replace all the rest of the init_net with a proper net on the IP layer.

Signed-off-by: Denis V. Lunev 
Signed-off-by: David S. Miller

[NETNS]: Add namespace parameter to ip_options_get(...).

2008-03-24T22:29:55+00:00

Pass the init_net there for now.

Signed-off-by: Denis V. Lunev 
Signed-off-by: David S. Miller

[NETNS]: Add namespace parameter to ip_options_compile.

2008-03-24T22:29:23+00:00

ip_options_compile uses inet_addr_type which requires a namespace. The
packet argument is optional, so parameter is the only way to obtain
it. Pass the init_net there for now.

Signed-off-by: Denis V. Lunev 
Signed-off-by: David S. Miller

[IPV4]: Always pass ip_options pointer into ip_options_compile.

2008-03-22T23:36:20+00:00

This makes code a bit more uniform and straigthforward.

Signed-off-by: Denis V. Lunev 
Signed-off-by: David S. Miller

[IPV4]: Remove unused ip_options->is_data.

2008-03-22T23:35:29+00:00

ip_options->is_data is assigned only and never checked. The structure is
not a part of kernel interface to the userspace. So, it is safe to remove
this field.

Signed-off-by: Denis V. Lunev 
Signed-off-by: David S. Miller

[IPV4]: Remove unnecessary check for opt->is_data in ip_options_compile.

2008-03-22T23:35:00+00:00

There is the only way to reach ip_options compile with opt != NULL:

ip_options_get_finish
    opt->is_data = 1;
    ip_options_compile(opt, NULL)

So, checking for is_data inside opt != NULL branch is not needed.

Signed-off-by: Denis V. Lunev 
Signed-off-by: David S. Miller

[IPV4]: Add 'rtable' field in struct sk_buff to alias 'dst' and avoid casts

2008-03-06T02:30:47+00:00

(Anonymous) unions can help us to avoid ugly casts.

A common cast it the (struct rtable *)skb->dst one.

Defining an union like  :
union {
     struct dst_entry *dst;
     struct rtable *rtable;
};
permits to use skb->rtable in place.

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

[IPV4]: skb->dst can't be NULL in ip_options_echo.

2008-03-03T19:50:10+00:00

ip_options_echo is called on the packet input path after the initial
routing. The dst entry on the packet is cleared only in the several
very specific places and immidiately assigned back (may be new).

Signed-off-by: Denis V. Lunev 
Signed-off-by: David S. Miller