linux-stable/net/core
samanthakumar 627d2d6b55 udp: enable MSG_PEEK at non-zero offset
Enable peeking at UDP datagrams at the offset specified with socket
option SOL_SOCKET/SO_PEEK_OFF. Peek at any datagram in the queue, up
to the end of the given datagram.

Implement the SO_PEEK_OFF semantics introduced in commit ef64a54f6e
("sock: Introduce the SO_PEEK_OFF sock option"). Increase the offset
on peek, decrease it on regular reads.

When peeking, always checksum the packet immediately, to avoid
recomputation on subsequent peeks and final read.

The socket lock is not held for the duration of udp_recvmsg, so
peek and read operations can run concurrently. Only the last store
to sk_peek_off is preserved.

Signed-off-by: Sam Kumar <samanthakumar@google.com>
Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-04-05 16:29:37 -04:00
..
datagram.c udp: enable MSG_PEEK at non-zero offset 2016-04-05 16:29:37 -04:00
dev.c net: add description for len argument of dev_get_phys_port_name 2016-03-21 13:28:31 -04:00
dev_addr_lists.c
dev_ioctl.c
devlink.c Introduce devlink infrastructure 2016-03-01 16:07:29 -05:00
drop_monitor.c
dst.c net: add dst_cache to ovs vxlan lwtunnel 2016-02-16 20:21:48 -05:00
dst_cache.c net: dst_cache_per_cpu_dst_set() can be static 2016-03-18 17:45:08 -04:00
ethtool.c ethtool: Set cmd field in ETHTOOL_GLINKSETTINGS response to wrong nwords 2016-03-16 19:26:04 -04:00
fib_rules.c fib_rules: fix fib rule dumps across multiple skbs 2015-09-24 15:21:54 -07:00
filter.c tun, bpf: fix suspicious RCU usage in tun_{attach, detach}_filter 2016-04-01 14:33:46 -04:00
flow.c flow: Move __get_hash_from_flowi{4,6} into flow_dissector.c 2015-09-01 17:00:24 -07:00
flow_dissector.c net/flow_dissector: Make dissector_uses_key() and skb_flow_dissector_target() public 2016-03-10 16:24:02 -05:00
gen_estimator.c net: sched: Add description for cpu_bstats argument 2016-03-20 16:48:07 -04:00
gen_stats.c gen_stats.c: Add description for cpu argument 2016-03-20 16:48:06 -04:00
hwbm.c net: add a hardware buffer management helper API 2016-03-14 12:19:46 -04:00
link_watch.c
lwtunnel.c lwtunnel: autoload of lwt modules 2016-02-21 22:00:28 -05:00
Makefile net: add a hardware buffer management helper API 2016-03-14 12:19:46 -04:00
neighbour.c net/neighbour: fix crash at dumping device-agnostic proxy entries 2015-12-03 00:07:51 -05:00
net-procfs.c
net-sysfs.c net: core: use __ethtool_get_ksettings 2016-02-25 22:06:47 -05:00
net-sysfs.h
net-traces.c net: IPv6 fib lookup tracepoint 2015-11-22 11:54:10 -05:00
net_namespace.c netns: make nsid_lock per net 2015-05-17 23:41:11 -04:00
netclassid_cgroup.c core: remove unneded headers for net cgroup controllers. 2016-02-17 15:31:27 -05:00
netevent.c netevent: remove automatic variable in register_netevent_notifier() 2015-05-31 00:03:21 -07:00
netpoll.c netpoll: Fix extra refcount release in netpoll_cleanup() 2016-03-25 11:23:14 -04:00
netprio_cgroup.c core: remove unneded headers for net cgroup controllers. 2016-02-17 15:31:27 -05:00
pktgen.c net: pktgen: use reset to set mac header 2016-03-01 17:46:54 -05:00
ptp_classifier.c ptp: Change ptp_class to a proper bitmask 2015-11-03 11:08:22 -05:00
request_sock.c tcp: restore fastopen operations 2015-10-05 03:19:06 -07:00
rtnetlink.c rtnl: fix msg size calculation in if_nlmsg_size() 2016-03-31 16:49:54 -04:00
scm.c unix: correctly track in-flight fds in sending process user_struct 2016-02-08 10:30:42 -05:00
secure_seq.c net: remove a sparse error in secure_dccpv6_sequence_number() 2015-05-25 22:55:37 -04:00
skbuff.c net: remove a dubious unlikely() clause 2016-03-20 16:24:07 -04:00
sock.c udp: enable MSG_PEEK at non-zero offset 2016-04-05 16:29:37 -04:00
sock_diag.c sock_diag: add SK_MEMINFO_DROPS 2016-04-04 22:11:20 -04:00
sock_reuseport.c soreuseport: fix NULL ptr dereference SO_REUSEPORT after bind 2016-01-19 14:44:23 -05:00
stream.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-12-03 21:09:12 -05:00
sysctl_net_core.c net:Add sysctl_max_skb_frags 2016-02-09 04:28:06 -05:00
timestamping.c net: skb_defer_rx_timestamp should check for phydev before setting up classify 2015-07-09 14:17:15 -07:00
tso.c net: tso: add support for IPv6 2015-10-26 22:24:22 -07:00
utils.c net: move net_get_random_once to lib 2015-10-08 05:26:35 -07:00