linux-toradex.git/include/linux/netlink.h, branch v2.6.25-rc2

[IPV4] fib_trie: rescan if key is lost during dump

2008-02-01T03:28:23+00:00

Normally during a dump the key of the last dumped entry is used for
continuation, but since lock is dropped it might be lost. In that case
fallback to the old counter based N^2 behaviour.  This means the dump
will end up skipping some routes which matches what FIB_HASH does.

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

[NETNS]: Consolidate kernel netlink socket destruction.

2008-01-28T23:08:07+00:00

Create a specific helper for netlink kernel socket disposal. This just
let the code look better and provides a ground for proper disposal
inside a namespace.

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

[NETLINK]: Mark attribute construction exception unlikely

2008-01-28T22:56:34+00:00

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

[NETLINK]: Fix unicast timeouts

2007-11-07T12:15:12+00:00

Commit ed6dcf4a in the history.git tree broke netlink_unicast timeouts
by moving the schedule_timeout() call to a new function that doesn't
propagate the remaining timeout back to the caller. This means on each
retry we start with the full timeout again.

ipc/mqueue.c seems to actually want to wait indefinitely so this
behaviour is retained.

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

[NET]: make netlink user -> kernel interface synchronious

2007-10-11T04:15:29+00:00

This patch make processing netlink user -> kernel messages synchronious.
This change was inspired by the talk with Alexey Kuznetsov about current
netlink messages processing. He says that he was badly wrong when introduced 
asynchronious user -> kernel communication.

The call netlink_unicast is the only path to send message to the kernel
netlink socket. But, unfortunately, it is also used to send data to the
user.

Before this change the user message has been attached to the socket queue
and sk->sk_data_ready was called. The process has been blocked until all
pending messages were processed. The bad thing is that this processing
may occur in the arbitrary process context.

This patch changes nlk->data_ready callback to get 1 skb and force packet
processing right in the netlink_unicast.

Kernel -> user path in netlink_unicast remains untouched.

EINTR processing for in netlink_run_queue was changed. It forces rtnl_lock
drop, but the process remains in the cycle until the message will be fully
processed. So, there is no need to use this kludges now.

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

[NET]: cleanup 3rd argument in netlink_sendskb

2007-10-11T04:14:03+00:00

netlink_sendskb does not use third argument. Clean it and save a couple of
bytes.

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

[NETLINK]: Introduce nested and byteorder flag to netlink attribute

2007-10-10T23:49:16+00:00

This change allows the generic attribute interface to be used within
the netfilter subsystem where this flag was initially introduced.

The byte-order flag is yet unused, it's intended use is to
allow automatic byte order convertions for all atomic types.

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

[NET]: Support multiple network namespaces with netlink

2007-10-10T23:49:09+00:00

Each netlink socket will live in exactly one network namespace,
this includes the controlling kernel sockets.

This patch updates all of the existing netlink protocols
to only support the initial network namespace.  Request
by clients in other namespaces will get -ECONREFUSED.
As they would if the kernel did not have the support for
that netlink protocol compiled in.

As each netlink protocol is updated to be multiple network
namespace safe it can register multiple kernel sockets
to acquire a presence in the rest of the network namespaces.

The implementation in af_netlink is a simple filter implementation
at hash table insertion and hash table look up time.

Signed-off-by: Eric W. Biederman 
Signed-off-by: David S. Miller

[NETLIKN]: Allow removing multicast groups.

2007-07-18T22:47:05+00:00

Allow kicking listeners out of a multicast group when necessary
(for example if that group is going to be removed.)

Signed-off-by: Johannes Berg 
Acked-by: Patrick McHardy 
Acked-by: Jamal Hadi Salim 
Signed-off-by: David S. Miller

[NETLINK]: allocate group bitmaps dynamically

2007-07-18T22:46:06+00:00

Allow changing the number of groups for a netlink family
after it has been created, use RCU to protect the listeners
bitmap keeping netlink_has_listeners() lock-free.

Signed-off-by: Johannes Berg 
Acked-by: Patrick McHardy 
Acked-by: Jamal Hadi Salim 
Signed-off-by: David S. Miller