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	Revert "net: fix percpu memory leaks"	2017-09-27 11:00:11 +02:00
addrconf.c	ipv6: fix sparse warning on rt6i_node	2017-09-27 11:00:10 +02:00
addrconf_core.c	ipv6: change ipv6_stub_impl.ipv6_dst_lookup to take net argument	2015-07-31 15:21:30 -07:00
addrlabel.c	ipv6/addrlabel: fix ip6addrlbl_get()	2015-12-22 15:57:54 -05:00
af_inet6.c	net: add validation for the socket syscall protocol argument	2015-12-14 16:09:30 -05:00
ah6.c	ah6: fix error return code	2015-08-25 13:37:31 -07:00
anycast.c	ipv6: coding style: comparison for equality with NULL	2015-03-31 13:51:54 -04:00
datagram.c	ipv6: Handle IPv4-mapped src to in6addr_any dst.	2017-06-17 06:39:35 +02:00
esp6.c	esp6: Fix integrity verification when ESN are used	2016-12-10 19:07:26 +01:00
exthdrs.c	ipv6: add complete rcu protection around np->opt	2015-12-02 23:37:16 -05:00
exthdrs_core.c	ipv6: re-enable fragment header matching in ipv6_find_hdr	2016-04-20 15:41:59 +09:00
exthdrs_offload.c	ipv6: fix exthdrs offload registration in out_rt path	2015-09-02 15:31:00 -07:00
fib6_rules.c	ipv6: Do not leak throw route references	2017-07-05 14:37:14 +02:00
icmp.c	ipv6: kill sk_dst_lock	2015-12-03 11:32:06 -05:00
ila.c	dst: Pass net into dst->output	2015-10-08 04:27:03 -07:00
inet6_connection_sock.c	ipv6: kill sk_dst_lock	2015-12-03 11:32:06 -05:00
inet6_hashtables.c	net: SO_INCOMING_CPU setsockopt() support	2015-10-12 19:28:20 -07:00
ip6_checksum.c	udp: Generic functions to set checksum	2014-06-04 22:46:38 -07:00
ip6_fib.c	ipv6: fix typo in fib6_net_exit()	2017-09-27 11:00:12 +02:00
ip6_flowlabel.c	ipv6: flowlabel: do not leave opt->tot_len with garbage	2017-11-18 11:11:06 +01:00
ip6_gre.c	ip6_gre: only increase err_count for some certain type icmpv6 in ip6gre_err	2017-11-18 11:11:06 +01:00
ip6_icmp.c	ipv6: White-space cleansing : Line Layouts	2014-08-24 22:37:52 -07:00
ip6_input.c	netfilter: Pass net into okfn	2015-09-17 17:18:37 -07:00
ip6_offload.c	ipv6: Fix leak in ipv6_gso_segment().	2017-06-14 13:16:19 +02:00
ip6_offload.h	ipv6: Pull IPv6 GSO registration out of the module	2012-11-15 17:39:24 -05:00
ip6_output.c	ipv6: flowlabel: do not leave opt->tot_len with garbage	2017-11-18 11:11:06 +01:00
ip6_tunnel.c	ipv6: check skb->protocol before lookup for nexthop	2017-05-02 21:19:54 -07:00
ip6_udp_tunnel.c	vxlan: do not receive IPv4 packets on IPv6 socket	2015-08-29 13:07:54 -07:00
ip6_vti.c	vti: fix use after free in vti_tunnel_xmit/vti6_tnl_xmit	2017-10-21 17:09:02 +02:00
ip6mr.c	ip6mr: fix notification device destruction	2017-05-02 21:19:54 -07:00
ipcomp6.c	ipv6: White-space cleansing : Structure layouts	2014-08-24 22:37:52 -07:00
ipv6_sockglue.c	net: Allow IP_MULTICAST_IF to set index to L3 slave	2017-11-30 08:37:26 +00:00
Kconfig	net: Identifier Locator Addressing module	2015-08-17 21:33:06 -07:00
Makefile	net: Identifier Locator Addressing module	2015-08-17 21:33:06 -07:00
mcast.c	mld, igmp: Fix reserved tailroom calculation	2016-04-20 15:41:58 +09:00
mcast_snoop.c	net: fix wrong skb_get() usage / crash in IGMP/MLD parsing code	2015-08-13 17:08:39 -07:00
mip6.c	ipv6: use ktime_t for internal timestamps	2015-10-05 03:16:47 -07:00
ndisc.c	ipv6: honor ifindex in case we receive ll addresses in router advertisements	2015-12-23 22:03:54 -05:00
netfilter.c	ipv6: Pass struct net into ip6_route_me_harder	2015-09-29 20:21:32 +02:00
output_core.c	ipv6: accept 64k - 1 packet length in ip6_find_1stfragopt()	2017-09-27 11:00:10 +02:00
ping.c	net: ping: do not abuse udp_poll()	2017-06-14 13:16:19 +02:00
proc.c	udp: Increment UDP_MIB_IGNOREDMULTI for arriving unmatched multicasts	2014-11-07 15:45:50 -05:00
protocol.c	net: Export inet_offloads and inet6_offloads	2014-09-19 17:15:31 -04:00
raw.c	net: ping: do not abuse udp_poll()	2017-06-14 13:16:19 +02:00
reassembly.c	Revert "net: fix percpu memory leaks"	2017-09-27 11:00:11 +02:00
route.c	ipv6: only call ip6_route_dev_notify() once for NETDEV_UNREGISTER	2017-11-30 08:37:18 +00:00
sit.c	sit: fix a double free on error path	2017-02-18 16:39:27 +01:00
syncookies.c	ipv4: ipv6: initialize treq->txhash in cookie_v[46]_check()	2017-08-11 09:08:51 -07:00
sysctl_net_ipv6.c	ipv6: Implement different admin modes for automatic flow labels	2015-07-31 17:07:11 -07:00
tcp_ipv6.c	ipv6: Handle IPv4-mapped src to in6addr_any dst.	2017-06-17 06:39:35 +02:00
tcpv6_offload.c	tcp: cleanup static functions	2015-02-28 16:56:51 -05:00
tunnel6.c	ipv6: fix tunnel error handling	2015-11-03 10:52:13 -05:00
udp.c	udpv6: Fix the checksum computation when HW checksum does not apply	2017-10-21 17:09:02 +02:00
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
udplite.c	net: Eliminate no_check from protosw	2014-05-23 16:28:53 -04:00
xfrm6_input.c	netfilter: Pass struct net into the netfilter hooks	2015-09-17 17:18:37 -07:00
xfrm6_mode_beet.c	xfrm: simplify xfrm_address_t use	2015-03-31 13:58:35 -04:00
xfrm6_mode_ro.c	ipv6: xfrm: Handle errors reported by xfrm6_find_1stfragopt()	2017-06-14 13:16:19 +02:00
xfrm6_mode_transport.c	ipv6: xfrm: Handle errors reported by xfrm6_find_1stfragopt()	2017-06-14 13:16:19 +02:00
xfrm6_mode_tunnel.c	ipv6: update skb->csum when CE mark is propagated	2016-01-31 11:29:01 -08:00
xfrm6_output.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2015-10-24 06:54:12 -07:00
xfrm6_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
xfrm6_protocol.c	xfrm6: Properly handle unsupported protocols	2014-05-06 07:08:38 +02:00
xfrm6_state.c	ipv6: White-space cleansing : Line Layouts	2014-08-24 22:37:52 -07:00
xfrm6_tunnel.c	ipv6: White-space cleansing : gaps between function and symbol export	2014-08-24 22:37:52 -07:00