linux-stable.git/net/core/rtnetlink.c, branch linux-4.8.y

rtnl: fix the loop index update error in rtnl_dump_ifinfo()

2016-12-10T18:09:38+00:00

[ Upstream commit 3f0ae05d6fea0ed5b19efdbc9c9f8e02685a3af3 ]

If the link is filtered out, loop index should also be updated. If not,
loop index will not be correct.

Fixes: dc599f76c22b0 ("net: Add support for filtering link dump by master device and kind")
Signed-off-by: Zhang Shengju 
Acked-by: David Ahern 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

rtnetlink: fix FDB size computation

2016-12-10T18:09:38+00:00

[ Upstream commit f82ef3e10a870acc19fa04f80ef5877eaa26f41e ]

Add missing NDA_VLAN attribute's size.

Fixes: 1e53d5bb8878 ("net: Pass VLAN ID to rtnl_fdb_notify.")
Signed-off-by: Sabrina Dubroca 
Signed-off-by: David S. Miller 
Signed-off-by: Greg Kroah-Hartman

rtnl: protect do_setlink from IFLA_XDP_ATTACHED

2016-07-21T05:07:23+00:00

The IFLA_XDP_ATTACHED nested attribute is meant for read-only, and while
do_setlink properly ignores it, it should be more paranoid and reject
commands that try to set it.

Signed-off-by: Brenden Blanco 
Acked-by: Alexei Starovoitov 
Signed-off-by: David S. Miller

rtnl: add option for setting link xdp prog

2016-07-20T04:46:32+00:00

Sets the bpf program represented by fd as an early filter in the rx path
of the netdev. The fd must have been created as BPF_PROG_TYPE_XDP.
Providing a negative value as fd clears the program. Getting the fd back
via rtnl is not possible, therefore reading of this value merely
provides a bool whether the program is valid on the link or not.

Signed-off-by: Brenden Blanco 
Signed-off-by: David S. Miller

net: introduce NETDEV_CHANGE_TX_QUEUE_LEN

2016-07-01T09:32:17+00:00

This patch introduces a new event - NETDEV_CHANGE_TX_QUEUE_LEN, this
will be triggered when tx_queue_len. It could be used by net device
who want to do some processing at that time. An example is tun who may
want to resize tx array when tx_queue_len is changed.

Cc: John Fastabend 
Signed-off-by: Jason Wang 
Acked-by: John Fastabend 
Signed-off-by: David S. Miller

net: rtnetlink: add support for the IFLA_STATS_LINK_XSTATS_SLAVE attribute

2016-06-30T10:15:04+00:00

This patch adds support for the IFLA_STATS_LINK_XSTATS_SLAVE attribute
which allows to export per-slave statistics if the master device supports
the linkxstats callback. The attribute is passed down to the linkxstats
callback and it is up to the callback user to use it (an example has been
added to the only current user - the bridge). This allows us to query only
specific slaves of master devices like bridge ports and export only what
we're interested in instead of having to dump all ports and searching only
for a single one. This will be used to export per-port IGMP/MLD stats and
also per-port vlan stats in the future, possibly other statistics as well.

Signed-off-by: Nikolay Aleksandrov 
Signed-off-by: David S. Miller

net_sched: add the ability to defer skb freeing

2016-06-15T21:08:34+00:00

qdisc are changed under RTNL protection and often
while blocking BH and root qdisc spinlock.

When lots of skbs need to be dropped, we free
them under these locks causing TX/RX freezes,
and more generally latency spikes.

This commit adds rtnl_kfree_skbs(), used to queue
skbs for deferred freeing.

Actual freeing happens right after RTNL is released,
with appropriate scheduling points.

rtnl_qdisc_drop() can also be used in place
of disc_drop() when RTNL is held.

qdisc_reset_queue() and __qdisc_reset_queue() get
the new behavior, so standard qdiscs like pfifo, pfifo_fast...
have their ->reset() method automatically handled.

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

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

2016-05-09T19:59:24+00:00

In netdevice.h we removed the structure in net-next that is being
changes in 'net'.  In macsec.c and rtnetlink.c we have overlaps
between fixes in 'net' and the u64 attribute changes in 'net-next'.

The mlx5 conflicts have to do with vxlan support dependencies.

Signed-off-by: David S. Miller

net: fix infoleak in rtnetlink

2016-05-04T20:19:42+00:00

The stack object “map” has a total size of 32 bytes. Its last 4
bytes are padding generated by compiler. These padding bytes are
not initialized and sent out via “nla_put”.

Signed-off-by: Kangjie Lu 
Signed-off-by: David S. Miller

net: rtnetlink: add linkxstats callbacks and attribute

2016-05-03T02:27:06+00:00

Add callbacks to calculate the size and fill link extended statistics
which can be split into multiple messages and are dumped via the new
rtnl stats API (RTM_GETSTATS) with the IFLA_STATS_LINK_XSTATS attribute.
Also add that attribute to the idx mask check since it is expected to
be able to save state and resume dumping (e.g. future bridge per-vlan
stats will be dumped via this attribute and callbacks).
Each link type should nest its private attributes under the per-link type
attribute. This allows to have any number of separated private attributes
and to avoid one call to get the dev link type.

Signed-off-by: Nikolay Aleksandrov 
Signed-off-by: David S. Miller