David Ahern d7c3d5333e net: Allow IP_MULTICAST_IF to set index to L3 slave ... [ Upstream commit 7bb387c5ab12aeac3d5eea28686489ff46b53ca9 ] IP_MULTICAST_IF fails if sk_bound_dev_if is already set and the new index does not match it. e.g., ntpd[15381]: setsockopt IP_MULTICAST_IF 192.168.1.23 fails: Invalid argument Relax the check in setsockopt to allow setting mc_index to an L3 slave if sk_bound_dev_if points to an L3 master. Make a similar change for IPv6. In this case change the device lookup to take the rcu_read_lock avoiding a refcnt. The rcu lock is also needed for the lookup of a potential L3 master device. This really only silences a setsockopt failure since uses of mc_index are secondary to sk_bound_dev_if if it is set. In both cases, if either index is an L3 slave or master, lookups are directed to the same FIB table so relaxing the check at setsockopt time causes no harm. Patch is based on a suggested change by Darwin for a problem noted in their code base. Suggested-by: Darwin Dingel <darwin.dingel@alliedtelesis.co.nz> Signed-off-by: David Ahern <dsa@cumulusnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2017-11-30 08:37:26 +00:00
..
netfilter	netfilter: invoke synchronize_rcu after set the _hook_ to NULL	2017-10-08 10:14:19 +02:00
af_inet.c	net: ping: do not abuse udp_poll()	2017-06-14 13:16:19 +02:00
ah4.c	IPsec: do not ignore crypto err in ah4 input	2017-11-15 17:13:10 +01:00
arp.c	NET: Fix /proc/net/arp for AX.25	2017-06-17 06:39:35 +02:00
cipso_ipv4.c	tcp/dccp: fix ireq->opt races	2017-11-18 11:11:06 +01:00
datagram.c	net: Set sk_txhash from a random number	2015-07-29 22:44:04 -07:00
devinet.c	ipv4: Don't do expensive useless work during inetdev destroy.	2016-04-20 15:42:03 +09:00
esp4.c	esp4: Fix integrity verification when ESN are used	2016-12-10 19:07:26 +01:00
fib_frontend.c	ipv4: initialize fib_trie prior to register_netdev_notifier call.	2017-08-11 09:08:52 -07:00
fib_lookup.h	ipv4: consider TOS in fib_select_default	2015-07-24 22:46:11 -07:00
fib_rules.c	net: ipv6: use common fib_default_rule_pref	2015-09-09 14:19:50 -07:00
fib_semantics.c	ipv4: fix NULL dereference in free_fib_info_rcu()	2017-08-30 10:19:18 +02:00
fib_trie.c	net: Improve handling of failures on link and route dumps	2017-06-07 12:05:58 +02:00
fou.c	net: add recursion limit to GRO	2016-11-15 07:46:38 +01:00
gre_demux.c	gre: Remove support for sharing GRE protocol hook.	2015-08-10 14:03:54 -07:00
gre_offload.c	net: add recursion limit to GRO	2016-11-15 07:46:38 +01:00
icmp.c	Revert "ipv4/icmp: redirect messages can use the ingress daddr as source"	2015-10-14 06:01:07 -07:00
igmp.c	igmp: add a missing spin_lock_init()	2017-07-05 14:37:14 +02:00
inet_connection_sock.c	tcp/dccp: fix other lockdep splats accessing ireq_opt	2017-11-18 11:11:07 +01:00
inet_diag.c	tcp/dccp: install syn_recv requests into ehash table	2015-10-03 04:32:41 -07:00
inet_fragment.c	Revert "net: use lib/percpu_counter API for fragmentation mem accounting"	2017-09-27 11:00:11 +02:00
inet_hashtables.c	tcp/dccp: fix hashdance race for passive sessions	2015-10-23 05:42:21 -07:00
inet_lro.c	lro: remove dead code	2013-12-29 16:34:25 -05:00
inet_timewait_sock.c	tcp/dccp: fix timewait races in timer handling	2015-09-21 16:32:29 -07:00
inetpeer.c	net: Add helper function to compare inetpeer addresses	2015-08-28 13:32:36 -07:00
ip_forward.c	net: Pass net into dst_output and remove dst_output_okfn	2015-10-08 04:26:54 -07:00
ip_fragment.c	Revert "net: fix percpu memory leaks"	2017-09-27 11:00:11 +02:00
ip_gre.c	vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices	2016-06-24 10:18:18 -07:00
ip_input.c	ipv4: Pass struct net into ip_defrag and ip_check_defrag	2015-10-12 19:44:16 -07:00
ip_options.c	ipv4: coding style: comparison for inequality with NULL	2015-04-03 12:11:15 -04:00
ip_output.c	net: account for current skb length when deciding about UFO	2017-08-12 19:29:09 -07:00
ip_sockglue.c	net: Allow IP_MULTICAST_IF to set index to L3 slave	2017-11-30 08:37:26 +00:00
ip_tunnel.c	vxlan, gre, geneve: Set a large MTU on ovs-created tunnel devices	2016-06-24 10:18:18 -07:00
ip_tunnel_core.c	tunnels: Remove encapsulation offloads on decap.	2016-10-31 04:13:59 -06:00
ip_vti.c	vti: fix use after free in vti_tunnel_xmit/vti6_tnl_xmit	2017-10-21 17:09:02 +02:00
ipcomp.c	ipv4: coding style: comparison for equality with NULL	2015-04-03 12:11:15 -04:00
ipconfig.c	ipconfig: send Client-identifier in DHCP requests	2015-10-18 19:23:52 -07:00
ipip.c	ipip: only increase err_count for some certain type icmp in ipip_err	2017-11-18 11:11:06 +01:00
ipmr.c	ipmr, ip6mr: fix scheduling while atomic and a deadlock with ipmr_get_route	2016-11-15 07:46:37 +01:00
Kconfig	geneve: Consolidate Geneve functionality in single module.	2015-08-27 15:42:48 -07:00
Makefile	tcp: track the packet timings in RACK	2015-10-21 07:00:48 -07:00
netfilter.c	ipv4: Pass struct net into ip_route_me_harder	2015-09-29 20:21:32 +02:00
ping.c	ping: implement proper locking	2017-04-30 05:49:29 +02:00
proc.c	net: track success and failure of TCP PMTU probing	2015-07-21 22:36:33 -07:00
protocol.c	net: Export inet_offloads and inet6_offloads	2014-09-19 17:15:31 -04:00
raw.c	ipv4, ipv6: ensure raw socket message is big enough to hold an IP header	2017-05-14 13:32:58 +02:00
route.c	ipv4: better IP_MAX_MTU enforcement	2017-08-30 10:19:19 +02:00
syncookies.c	tcp/dccp: fix ireq->opt races	2017-11-18 11:11:06 +01:00
sysctl_net_ipv4.c	ipv4: use the right lock for ping_group_range	2016-11-15 07:46:38 +01:00
tcp.c	tcp: initialize rcv_mss to TCP_MIN_MSS instead of 0	2017-09-27 11:00:11 +02:00
tcp_bic.c	tcp: add tcp_in_slow_start helper	2015-07-09 14:22:52 -07:00
tcp_cdg.c	tcp: do not slow start when cwnd equals ssthresh	2015-07-09 14:22:52 -07:00
tcp_cong.c	tcp: disallow cwnd undo when switching congestion control	2017-06-14 13:16:19 +02:00
tcp_cubic.c	tcp_cubic: do not set epoch_start in the future	2015-09-17 22:35:07 -07:00
tcp_dctcp.c	dctcp: avoid bogus doubling of cwnd after loss	2016-11-21 10:06:39 +01:00
tcp_diag.c	tcp: ensure proper barriers in lockless contexts	2015-11-15 18:36:38 -05:00
tcp_fastopen.c	tcp: initialize max window for a new fastopen socket	2017-02-04 09:45:09 +01:00
tcp_highspeed.c	tcp: add tcp_in_slow_start helper	2015-07-09 14:22:52 -07:00
tcp_htcp.c	tcp: add tcp_in_slow_start helper	2015-07-09 14:22:52 -07:00
tcp_hybla.c	tcp: do not slow start when cwnd equals ssthresh	2015-07-09 14:22:52 -07:00
tcp_illinois.c	tcp: add tcp_in_slow_start helper	2015-07-09 14:22:52 -07:00
tcp_input.c	tcp/dccp: fix ireq->opt races	2017-11-18 11:11:06 +01:00
tcp_ipv4.c	tcp/dccp: fix other lockdep splats accessing ireq_opt	2017-11-18 11:11:07 +01:00
tcp_lp.c	tcp: fix wraparound issue in tcp_lp	2017-05-14 13:32:58 +02:00
tcp_memcontrol.c	memcg: cleanup static keys decrement	2015-02-12 18:54:10 -08:00
tcp_metrics.c	tcp: convert cached rtt from usec to jiffies when feeding initial rto	2016-04-20 15:41:56 +09:00
tcp_minisocks.c	tcp: do not inherit fastopen_req from parent	2017-05-14 13:32:58 +02:00
tcp_offload.c	tcp: reserve tcp_skb_mss() to tcp stack	2015-06-11 16:33:10 -07:00
tcp_output.c	tcp: do not mangle skb->cb[] in tcp_make_synack()	2017-11-24 08:32:23 +01:00
tcp_probe.c	tcp: whitespace fixes	2014-09-01 18:12:45 -07:00
tcp_recovery.c	tcp: use RACK to detect losses	2015-10-21 07:00:53 -07:00
tcp_scalable.c	tcp: add tcp_in_slow_start helper	2015-07-09 14:22:52 -07:00
tcp_timer.c	net: fix keepalive code vs TCP_FASTOPEN_CONNECT	2017-08-12 19:29:08 -07:00
tcp_vegas.c	tcp: add tcp_in_slow_start helper	2015-07-09 14:22:52 -07:00
tcp_vegas.h	tcp: prepare CC get_info() access from getsockopt()	2015-04-29 17:10:38 -04:00
tcp_veno.c	tcp: add tcp_in_slow_start helper	2015-07-09 14:22:52 -07:00
tcp_westwood.c	tcp_westwood: fix tcp_westwood_info()	2015-05-05 19:50:09 -04:00
tcp_yeah.c	tcp: cwnd does not increase in TCP YeAH	2016-09-30 10:18:34 +02:00
tunnel4.c	net: Convert printks to pr_<level>	2012-03-11 23:42:51 -07:00
udp.c	udp: consistently apply ufo or fragmentation	2017-08-12 19:29:09 -07:00
udp_diag.c	sock_diag: specify info_size per inet protocol	2015-06-15 19:49:22 -07:00
udp_impl.h	net: Remove iocb argument from sendmsg and recvmsg	2015-03-02 13:06:31 -05:00
udp_offload.c	net: avoid skb_warn_bad_offload false positives on UFO	2017-08-12 19:29:08 -07:00
udp_tunnel.c	tunnel: Clear IPCB(skb)->opt before dst_link_failure called	2016-04-20 15:41:56 +09:00
udplite.c	net: Eliminate no_check from protosw	2014-05-23 16:28:53 -04:00
xfrm4_input.c	netfilter: Pass net into okfn	2015-09-17 17:18:37 -07:00
xfrm4_mode_beet.c	ipv4: ERROR: code indent should use tabs where possible	2013-12-26 13:43:21 -05:00
xfrm4_mode_transport.c
xfrm4_mode_tunnel.c	ipv4: hash net ptr into fragmentation bucket selection	2015-03-25 14:07:04 -04:00
xfrm4_output.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-24 06:54:12 -07:00
xfrm4_policy.c	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec	2015-12-22 16:26:31 -05:00
xfrm4_protocol.c	xfrm4: Remove duplicate semicolon	2014-06-30 07:49:47 +02:00
xfrm4_state.c	inet: make no_pmtu_disc per namespace and kill ipv4_config	2013-12-18 16:58:20 -05:00
xfrm4_tunnel.c	sit: add IPv4 over IPv4 support	2013-05-31 17:19:05 -07:00