linux.git/net/netfilter/nfnetlink_queue.c, branch v2.6.23

[NET]: Make all initialized struct seq_operations const.

2007-07-11T06:07:31+00:00

Make all initialized struct seq_operations in net/ const

Signed-off-by: Philippe De Muyter 
Signed-off-by: David S. Miller

[NETFILTER]: nfnetlink_queue: don't unregister handler of other subsystem

2007-07-11T05:18:21+00:00

The queue handlers registered by ip[6]_queue.ko at initialization should
not be unregistered according to requests from userland program
using nfnetlink_queue. If we allow that, there is no way to register
the handlers of built-in ip[6]_queue again.

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

[SK_BUFF]: Introduce skb_copy_to_linear_data{_offset}

2007-04-26T05:28:29+00:00

To clearly state the intent of copying to linear sk_buffs, _offset being a
overly long variant but interesting for the sake of saving some bytes.

Signed-off-by: Arnaldo Carvalho de Melo

[NETLINK]: Remove error pointer from netlink message handler

2007-04-26T05:27:30+00:00

The error pointer argument in netlink message handlers is used
to signal the special case where processing has to be interrupted
because a dump was started but no error happened. Instead it is
simpler and more clear to return -EINTR and have netlink_run_queue()
deal with getting the queue right.

nfnetlink passed on this error pointer to its subsystem handlers
but only uses it to signal the start of a netlink dump. Therefore
it can be removed there as well.

This patch also cleans up the error handling in the affected
message handlers to be consistent since it had to be touched anyway.

Signed-off-by: Thomas Graf 
Signed-off-by: David S. Miller

[SK_BUFF]: Convert skb->tail to sk_buff_data_t

2007-04-26T05:26:28+00:00

So that it is also an offset from skb->head, reduces its size from 8 to 4 bytes
on 64bit architectures, allowing us to combine the 4 bytes hole left by the
layer headers conversion, reducing struct sk_buff size to 256 bytes, i.e. 4
64byte cachelines, and since the sk_buff slab cache is SLAB_HWCACHE_ALIGN...
:-)

Many calculations that previously required that skb->{transport,network,
mac}_header be first converted to a pointer now can be done directly, being
meaningful as offsets or pointers.

Signed-off-by: Arnaldo Carvalho de Melo 
Signed-off-by: David S. Miller

[NET]: convert network timestamps to ktime_t

2007-04-26T05:23:34+00:00

We currently use a special structure (struct skb_timeval) and plain
'struct timeval' to store packet timestamps in sk_buffs and struct
sock.

This has some drawbacks :
- Fixed resolution of micro second.
- Waste of space on 64bit platforms where sizeof(struct timeval)=16

I suggest using ktime_t that is a nice abstraction of high resolution
time services, currently capable of nanosecond resolution.

As sizeof(ktime_t) is 8 bytes, using ktime_t in 'struct sock' permits
a 8 byte shrink of this structure on 64bit architectures. Some other
structures also benefit from this size reduction (struct ipq in
ipv4/ip_fragment.c, struct frag_queue in ipv6/reassembly.c, ...)

Once this ktime infrastructure adopted, we can more easily provide
nanosecond resolution on top of it. (ioctl SIOCGSTAMPNS and/or
SO_TIMESTAMPNS/SCM_TIMESTAMPNS)

Note : this patch includes a bug correction in
compat_sock_get_timestamp() where a "err = 0;" was missing (so this
syscall returned -ENOENT instead of 0)

Signed-off-by: Eric Dumazet 
CC: Stephen Hemminger 
CC: John find 
Signed-off-by: David S. Miller

[NETFILTER]: Fix whitespace errors

2007-02-12T19:15:49+00:00

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

[PATCH] mark struct file_operations const 8

2007-02-12T17:48:46+00:00

Many struct file_operations in the kernel can be "const".  Marking them const
moves these to the .rodata section, which avoids false sharing with potential
dirty data.  In addition it'll catch accidental writes at compile time to
these shared resources.

Signed-off-by: Arjan van de Ven 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

[NETFILTER]: nfnetlink_queue: allow changing queue length through netlink

2006-12-03T05:31:29+00:00

Signed-off-by: Eric Leblond 
Signed-off-by: Patrick McHardy

[NET]: Turn nfmark into generic mark

2006-12-03T05:21:38+00:00

nfmark is being used in various subsystems and has become
the defacto mark field for all kinds of packets. Therefore
it makes sense to rename it to `mark' and remove the
dependency on CONFIG_NETFILTER.

Signed-off-by: Thomas Graf 
Signed-off-by: David S. Miller