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84e14fe353
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Maciej Żenczykowski 84e14fe353 net-ipv6: add support for sockopt(SOL_IPV6, IPV6_FREEBIND) 
So far we've been relying on sockopt(SOL_IP, IP_FREEBIND) being usable
even on IPv6 sockets.

However, it turns out it is perfectly reasonable to want to set freebind
on an AF_INET6 SOCK_RAW socket - but there is no way to set any SOL_IP
socket option on such a socket (they're all blindly errored out).

One use case for this is to allow spoofing src ip on a raw socket
via sendmsg cmsg.

Tested:
  built, and booted
  # python
  >>> import socket
  >>> SOL_IP = socket.SOL_IP
  >>> SOL_IPV6 = socket.IPPROTO_IPV6
  >>> IP_FREEBIND = 15
  >>> IPV6_FREEBIND = 78
  >>> s = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM, 0)
  >>> s.getsockopt(SOL_IP, IP_FREEBIND)
  0
  >>> s.getsockopt(SOL_IPV6, IPV6_FREEBIND)
  0
  >>> s.setsockopt(SOL_IPV6, IPV6_FREEBIND, 1)
  >>> s.getsockopt(SOL_IP, IP_FREEBIND)
  1
  >>> s.getsockopt(SOL_IPV6, IPV6_FREEBIND)
  1

Signed-off-by: Maciej Żenczykowski <maze@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2017-09-30 05:30:52 +01:00
..
6lowpan
9p net/9p: switch p9_fd_read to kernel_write 2017-09-04 19:05:16 -04:00
802 net: introduce __skb_put_[zero, data, u8] 2017-06-20 13:30:14 -04:00
8021q net: add netlink_ext_ack argument to rtnl_link_ops.validate 2017-06-26 23:13:22 -04:00
appletalk
atm net: atm: make atmdev_ops const 2017-08-09 22:43:50 -07:00
ax25 net, ax25: convert ax25_cb.refcount from atomic_t to refcount_t 2017-07-04 22:35:19 +01:00
batman-adv net: Remove useless function skb_header_release 2017-09-22 20:43:13 -07:00
bluetooth Bluetooth: Properly check L2CAP config option output buffer length 2017-09-09 17:56:05 -07:00
bpf bpf: add meta pointer for direct access 2017-09-26 13:36:44 -07:00
bridge net: bridge: add per-port group_fwd_mask with less restrictions 2017-09-29 06:02:55 +01:00
caif net: convert sock.sk_wmem_alloc from atomic_t to refcount_t 2017-07-01 07:39:08 -07:00
can rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
ceph libceph: don't allow bidirectional swap of pg-upmap-items 2017-09-19 20:34:29 +02:00
core rtnetlink: rtnl_have_link_slave_info doesn't need rtnl 2017-09-28 10:20:49 -07:00
dcb rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
dccp net: dccp: Add handling of IPV6_PKTOPTIONS to dccp_v6_do_rcv() 2017-08-31 11:43:47 -07:00
decnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next 2017-09-03 17:08:42 -07:00
dns_resolver
dsa net: dsa: use phy_ethtool_nway_reset 2017-09-26 20:06:34 -07:00
ethernet
hsr net/hsr: Check skb_put_padto() return value 2017-08-22 13:40:23 -07:00
ieee802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-09-05 20:03:35 -07:00
ife
ipv4 net: ipv4: remove fib_info arg to fib_check_nh 2017-09-29 06:19:32 +01:00
ipv6 net-ipv6: add support for sockopt(SOL_IPV6, IPV6_FREEBIND) 2017-09-30 05:30:52 +01:00
ipx net, ipx: convert ipx_route.refcnt from atomic_t to refcount_t 2017-07-04 22:35:17 +01:00
iucv iucv: Convert sk_wmem_alloc accesses to refcount_t. 2017-07-03 02:31:22 -07:00
kcm kcm: Remove redundant unlikely() 2017-09-26 09:54:06 -07:00
key Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-08-15 20:23:23 -07:00
l2tp l2tp: pass tunnel pointer to ->session_create() 2017-09-03 11:04:21 -07:00
l3mdev
lapb net, lapb: convert lapb_cb.refcnt from atomic_t to refcount_t 2017-07-04 22:35:16 +01:00
llc net, llc: convert llc_sap.refcnt from atomic_t to refcount_t 2017-07-04 22:35:15 +01:00
mac80211 mac80211: fix deadlock in driver-managed RX BA session start 2017-09-06 15:22:02 +02:00
mac802154 mac802154: Fix MAC header and payload encrypted 2017-09-20 13:37:16 +02:00
mpls rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
ncsi net/ncsi: fix ncsi_vlan_rx_{add,kill}_vid references 2017-09-05 09:11:45 -07:00
netfilter netfilter: ipset: ipset list may return wrong member count for set with timeout 2017-09-18 17:35:32 +02:00
netlabel
netlink netlink: access nlk groups safely in netlink bind and getname 2017-09-06 21:22:54 -07:00
netrom net, netrom: convert nr_node.refcount from atomic_t to refcount_t 2017-07-04 22:35:17 +01:00
nfc net: nfc: llcp_core: use setup_timer() helper. 2017-09-25 13:19:20 -07:00
nsh nsh: add GSO support 2017-08-29 15:16:52 -07:00
openvswitch openvswitch: Fix an error handling path in 'ovs_nla_init_match_and_action()' 2017-09-12 20:37:31 -07:00
packet net: af_packet: use setup_timer() helper. 2017-09-25 13:19:19 -07:00
phonet rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
psample
qrtr rtnetlink: make rtnl_register accept a flags parameter 2017-08-09 16:57:38 -07:00
rds rds: Fix incorrect statistics counting 2017-09-07 20:07:13 -07:00
rfkill
rose
rxrpc rxrpc: Make service connection lookup always check for retry 2017-09-05 14:39:17 -07:00
sched net_sched: use idr to allocate u32 filter handles 2017-09-28 09:43:41 -07:00
sctp sctp: do not mark sk dumped when inet_sctp_diag_fill returns err 2017-09-15 14:51:15 -07:00
smc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-09-23 10:16:53 -07:00
strparser strparser: initialize all callbacks 2017-08-24 21:57:50 -07:00
sunrpc NFS client updates for Linux 4.14 2017-09-11 22:01:44 -07:00
switchdev net: switchdev: Remove bridge bypass support from switchdev 2017-08-07 14:48:48 -07:00
tipc tipc: remove unnecessary call to dev_net() 2017-09-06 21:25:52 -07:00
tls tls: make tls_sw_free_resources static 2017-09-14 09:55:21 -07:00
unix Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-08-21 17:06:42 -07:00
vmw_vsock vsock: vmci: Remove unneeded linux/miscdevice.h include 2017-09-19 13:51:57 -07:00
wimax
wireless nl80211: fix null-ptr dereference on invalid mesh configuration 2017-09-18 22:51:07 +02:00
x25 X25: constify null_x25_address 2017-08-03 09:13:51 -07:00
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-09-01 17:42:05 -07:00
compat.c net: compat: assert the size of cmsg copied in is as expected 2017-09-20 15:36:18 -07:00
Kconfig net: Remove CONFIG_NETFILTER_DEBUG and _ASSERT() macros. 2017-09-04 13:25:20 +02:00
Makefile nsh: add GSO support 2017-08-29 15:16:52 -07:00
socket.c net: fixes for skb_send_sock 2017-08-16 11:27:52 -07:00
sysctl_net.c