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Geir Ola Vaagland 2347c80ff1 net: sctp: implement rfc6458, 5.3.6. SCTP_NXTINFO cmsg support 
This patch implements section 5.3.6. of RFC6458, that is, support
for 'SCTP Next Receive Information Structure' (SCTP_NXTINFO) which
is placed into ancillary data cmsghdr structure for each recvmsg()
call, if this information is already available when delivering the
current message.

This option can be enabled/disabled via setsockopt(2) on SOL_SCTP
level by setting an int value with 1/0 for SCTP_RECVNXTINFO in
user space applications as per RFC6458, section 8.1.30.

The sctp_nxtinfo structure is defined as per RFC as below ...

  struct sctp_nxtinfo {
    uint16_t nxt_sid;
    uint16_t nxt_flags;
    uint32_t nxt_ppid;
    uint32_t nxt_length;
    sctp_assoc_t nxt_assoc_id;
  };

... and provided under cmsg_level IPPROTO_SCTP, cmsg_type
SCTP_NXTINFO, while cmsg_data[] contains struct sctp_nxtinfo.

Joint work with Daniel Borkmann.

Signed-off-by: Geir Ola Vaagland <geirola@gmail.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-07-16 14:40:03 -07:00
..
9p 9P: remove unnecessary break after return 2014-07-15 16:27:00 -07:00
802 net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
8021q Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
appletalk Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
atm net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
ax25
batman-adv net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
bluetooth net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
bridge net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
caif caif: remove unnecessary break after goto 2014-07-15 16:27:01 -07:00
can
ceph Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2014-06-12 23:06:23 -07:00
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
dcb
dccp inet: move ipv6only in sock_common 2014-07-01 23:46:21 -07:00
decnet net: Split sk_no_check into sk_no_check_{rx,tx} 2014-05-23 16:28:53 -04:00
dns_resolver Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-06-11 16:02:55 -07:00
dsa net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
ethernet net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
hsr net/hsr: Remove left-over never-true conditional code. 2014-07-11 15:04:40 -07:00
ieee802154 ieee802154: remove unnecessary break after goto 2014-07-15 16:27:01 -07:00
ipv4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
ipv6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
ipx net: Split sk_no_check into sk_no_check_{rx,tx} 2014-05-23 16:28:53 -04:00
irda irda: remove unnecessary break after return 2014-07-15 16:27:01 -07:00
iucv af_iucv: remove unnecessary break after goto 2014-07-15 16:27:00 -07:00
key af_key: remove unnecessary break after return 2014-07-15 16:27:00 -07:00
l2tp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
lapb
llc
mac80211 mac80211: remove unnecessary break after return 2014-07-15 16:27:00 -07:00
mac802154 net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
mpls gre: Call gso_make_checksum 2014-06-04 22:46:38 -07:00
netfilter netfilter: nf_nat: fix oops on netns removal 2014-06-16 13:58:54 +02:00
netlabel netlabel: remove unnecessary break after goto 2014-07-15 16:27:00 -07:00
netlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
netrom net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
nfc NFC: remove unnecessary break after goto 2014-07-15 16:27:01 -07:00
openvswitch Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
packet packet: remove unnecessary break after return 2014-07-15 16:26:59 -07:00
phonet net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
rds Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-06-12 14:27:40 -07:00
rfkill Merge git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next 2014-05-22 13:58:36 -04:00
rose net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
rxrpc
sched net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
sctp net: sctp: implement rfc6458, 5.3.6. SCTP_NXTINFO cmsg support 2014-07-16 14:40:03 -07:00
sunrpc NFSv4: test SECINFO RPC_AUTH_GSS pseudoflavors for support 2014-06-24 18:46:58 -04:00
tipc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-07-16 14:09:34 -07:00
unix Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2014-06-12 14:27:40 -07:00
vmw_vsock
wimax
wireless Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless 2014-07-10 17:00:24 -04:00
x25
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-06-03 23:32:12 -07:00
compat.c
Kconfig
Makefile
nonet.c
socket.c
sysctl_net.c