linux-toradex.git/include/linux/netlink.h, branch T20_LinuxImageV2.0Beta1_20121218

net: Make userland include of netlink.h more sane.

2011-08-08T05:48:07+00:00

Currently userland will barf when including linux/netlink.h unless it
precisely includes sys/socket.h first.  The issue is where the
definition of "sa_family_t" comes from.

We've been back and forth on how to fix this issue in the past, see:

http://thread.gmane.org/gmane.linux.debian.devel.bugs.general/622621
http://thread.gmane.org/gmane.linux.network/143380

Ben Hutchings suggested we take a hint from how we handle the
sockaddr_storage type.  First we define a "__kernel_sa_family_t"
to linux/socket.h that is always defined.

Then if __KERNEL__ is defined, we also define "sa_family_t" as
equal to "__kernel_sa_family_t".

Then in places like linux/netlink.h we use __kernel_sa_family_t
in user visible datastructures.

Reported-by: Michel Machado 
Signed-off-by: David S. Miller

Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem

2011-06-24T19:25:51+00:00

Conflicts:
	drivers/net/wireless/rtlwifi/pci.c
	include/linux/netlink.h

netlink: advertise incomplete dumps

2011-06-22T20:09:45+00:00

Consider the following situation:
 * a dump that would show 8 entries, four in the first
   round, and four in the second
 * between the first and second rounds, 6 entries are
   removed
 * now the second round will not show any entry, and
   even if there is a sequence/generation counter the
   application will not know

To solve this problem, add a new flag NLM_F_DUMP_INTR
to the netlink header that indicates the dump wasn't
consistent, this flag can also be set on the MSG_DONE
message that terminates the dump, and as such above
situation can be detected.

To achieve this, add a sequence counter to the netlink
callback struct. Of course, netlink code still needs
to use this new functionality. The correct way to do
that is to always set cb->seq when a dumpit callback
is invoked and call nl_dump_check_consistent() for
each new message. The core code will also call this
function for the final MSG_DONE message.

To make it usable with generic netlink, a new function
genlmsg_nlhdr() is needed to obtain the netlink header
from the genetlink user header.

Signed-off-by: Johannes Berg 
Acked-by: David S. Miller 
Signed-off-by: John W. Linville

rtnetlink: Compute and store minimum ifinfo dump size

2011-06-10T03:38:07+00:00

The message size allocated for rtnl ifinfo dumps was limited to
a single page.  This is not enough for additional interface info
available with devices that support SR-IOV and caused a bug in
which VF info would not be displayed if more than approximately
40 VFs were created per interface.

Implement a new function pointer for the rtnl_register service that will
calculate the amount of data required for the ifinfo dump and allocate
enough data to satisfy the request.

Signed-off-by: Greg Rose 
Signed-off-by: Jeff Kirsher

RDMA: Add netlink infrastructure

2011-05-20T18:46:11+00:00

Add basic RDMA netlink infrastructure that allows for registration of
RDMA clients for which data is to be exported and supplies message
construction callbacks.

Signed-off-by: Nir Muchtar 

[ Reorganize a few things, add CONFIG_NET dependency.  - Roland ]

Signed-off-by: Roland Dreier

netlink: kill eff_cap from struct netlink_skb_parms

2011-03-03T21:32:07+00:00

Netlink message processing in the kernel is synchronous these days,
capabilities can be checked directly in security_netlink_recv() from
the current process.

Signed-off-by: Patrick McHardy 
Reviewed-by: James Morris 
[chrisw: update to include pohmelfs and uvesafb]
Signed-off-by: Chris Wright 
Signed-off-by: David S. Miller

netlink: kill loginuid/sessionid/sid members from struct netlink_skb_parms

2011-03-03T18:55:40+00:00

Netlink message processing in the kernel is synchronous these days, the
session information can be collected when needed.

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

netlink: fix gcc -Wconversion compilation warning

2010-12-17T20:03:14+00:00

$ cat << EOF | gcc -Wconversion -xc -S -o/dev/null -
unsigned f(void) {return NLMSG_HDRLEN;}
EOF
: In function 'f':
:3:26: warning: negative integer implicitly converted to unsigned type

Signed-off-by: Dmitry V. Levin 
Signed-off-by: Kirill A. Shutemov 
Signed-off-by: David S. Miller

net: Move "struct net" declaration inside the KERNEL macro guard

2010-09-22T20:21:05+00:00

This patch reduces namespace pollution by moving the "struct net" declaration
out of the userspace-facing portion of linux/netlink.h.  It has no impact on
the kernel.

(This came up because we have several C++ applications which use "net" as a
namespace name.)

Signed-off-by: Ollie Wild 
Signed-off-by: David S. Miller

netlink: Implment netlink_broadcast_filtered

2010-05-21T16:37:32+00:00

When netlink sockets are used to convey data that is in a namespace
we need a way to select a subset of the listening sockets to deliver
the packet to.  For the network namespace we have been doing this
by only transmitting packets in the correct network namespace.

For data belonging to other namespaces netlink_bradcast_filtered
provides a mechanism that allows us to examine the destination
socket and to decide if we should transmit the specified packet
to it.

Signed-off-by: Eric W. Biederman 
Acked-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman