Greg Rose 115c9b8192 rtnetlink: Fix problem with buffer allocation ... Implement a new netlink attribute type IFLA_EXT_MASK. The mask is a 32 bit value that can be used to indicate to the kernel that certain extended ifinfo values are requested by the user application. At this time the only mask value defined is RTEXT_FILTER_VF to indicate that the user wants the ifinfo dump to send information about the VFs belonging to the interface. This patch fixes a bug in which certain applications do not have large enough buffers to accommodate the extra information returned by the kernel with large numbers of SR-IOV virtual functions. Those applications will not send the new netlink attribute with the interface info dump request netlink messages so they will not get unexpectedly large request buffers returned by the kernel. Modifies the rtnl_calcit function to traverse the list of net devices and compute the minimum buffer size that can hold the info dumps of all matching devices based upon the filter passed in via the new netlink attribute filter mask. If no filter mask is sent then the buffer allocation defaults to NLMSG_GOODSIZE. With this change it is possible to add yet to be defined netlink attributes to the dump request which should make it fairly extensible in the future. Signed-off-by: Greg Rose <gregory.v.rose@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2012-02-21 16:56:45 -05:00
..
datagram.c	net: add skb frag size accessors	2011-10-19 03:10:46 -04:00
dev_addr_lists.c	net: introduce netif_addr_lock_nested() and call if when appropriate	2012-01-09 12:46:58 -08:00
dev.c	gro: more generic L2 header check	2012-02-08 18:26:54 -05:00
drop_monitor.c	net,rcu: convert call_rcu(free_dm_hw_stat) to kfree_rcu()	2011-05-07 22:50:59 -07:00
dst.c	net: Rename dst_get_neighbour{, _raw} to dst_get_neighbour_noref{, _raw}.	2011-12-05 15:20:19 -05:00
ethtool.c	ethtool: Null-terminate filename passed to ethtool_ops::flash_device	2012-02-01 14:47:17 -05:00
fib_rules.c	net: Fix files explicitly needing to include module.h	2011-10-31 19:30:28 -04:00
filter.c	filter: use unsigned int to silence static checker warning	2011-10-19 19:35:51 -04:00
flow_dissector.c	net: flow_dissector.c missing include linux/export.h	2012-01-24 16:03:33 -05:00
flow.c	net: Add a flow_cache_flush_deferred function	2011-12-21 16:48:08 -05:00
gen_estimator.c	net,rcu: convert call_rcu(__gen_kill_estimator) to kfree_rcu()	2011-05-07 22:50:57 -07:00
gen_stats.c	net/core: EXPORT_SYMBOL cleanups	2010-07-12 12:57:55 -07:00
iovec.c	net: Limit socket I/O iovec total length to INT_MAX.	2010-10-28 11:47:52 -07:00
kmap_skb.h	net: convert core to skb paged frag APIs	2011-08-24 17:52:11 -07:00
link_watch.c	net: linkwatch: allow vlans to get carrier changes faster	2011-09-15 15:36:34 -04:00
Makefile	sock_diag: Move the sock_ code to net/core/	2011-12-06 13:58:02 -05:00
neighbour.c	neighbour: Fixed race condition at tbl->nht	2012-02-21 16:28:10 -05:00
net_namespace.c	netns: fix net_alloc_generic()	2012-01-26 13:36:19 -05:00
net-sysfs.c	bql: Fix inconsistency between file mode and attr method.	2012-01-17 10:05:55 -05:00
net-sysfs.h	xps: Add CONFIG_XPS	2010-11-28 18:24:14 -08:00
net-traces.c	net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules	2011-10-31 19:30:30 -04:00
netevent.c	net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules	2011-10-31 19:30:30 -04:00
netpoll.c	netpoll: netpoll_poll_dev() should access dev->flags	2012-02-14 15:24:26 -05:00
netprio_cgroup.c	netprio_cgroup: don't allocate prio table when a device is registered	2012-02-10 15:08:57 -05:00
pktgen.c	pktgen: Fix unsigned function that is returning negative vals	2012-01-22 15:08:44 -05:00
request_sock.c	ipv4:correct description for tcp_max_syn_backlog	2011-12-06 13:02:28 -05:00
rtnetlink.c	rtnetlink: Fix problem with buffer allocation	2012-02-21 16:56:45 -05:00
scm.c	af_unix: dont send SCM_CREDENTIALS by default	2011-09-28 13:29:50 -04:00
secure_seq.c	net: fix some sparse errors	2012-01-17 10:31:12 -05:00
skbuff.c	net:core: use IS_ENABLED	2011-12-16 15:49:51 -05:00
sock_diag.c	sock_diag: Introduce the meminfo nla core (v2)	2011-12-30 16:42:19 -05:00
sock.c	netprio_cgroup: fix wrong memory access when NETPRIO_CGROUP=m	2012-02-10 15:08:57 -05:00
stream.c	net: Fix the condition passed to sk_wait_event()	2010-10-03 20:41:32 -07:00
sysctl_net_core.c	net: use jump_label to shortcut RPS if not setup	2011-11-17 17:06:08 -05:00
timestamping.c	net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules	2011-10-31 19:30:30 -04:00
user_dma.c	net: Add export.h for EXPORT_SYMBOL/THIS_MODULE to non-modules	2011-10-31 19:30:30 -04:00
utils.c	net: Kill ratelimit.h dependency in linux/net.h	2011-05-27 13:41:33 -04:00