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linux/net/ipv6
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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
..
ila ila: autoload module 2016-02-21 22:00:28 -05:00
netfilter netfilter: x_tables: enforce nul-terminated table name from getsockopt GET_ENTRIES 2016-03-28 17:59:24 +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
addrconf.c netconf: add macro to represent all attributes 2016-03-13 21:54:44 -04:00
addrlabel.c ipv6/addrlabel: fix ip6addrlbl_get() 2015-12-22 15:57:54 -05:00
af_inet6.c udp: enable MSG_PEEK at non-zero offset 2016-04-05 16:29:37 -04:00
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: process socket-level control messages in IPv6 2016-04-04 15:50:30 -04:00
esp6.c esp6: Switch to new AEAD interface 2015-05-28 11:23:20 +08:00
exthdrs_core.c ipv6: re-enable fragment header matching in ipv6_find_hdr 2016-03-03 16:35:20 -05:00
exthdrs_offload.c ipv6: fix exthdrs offload registration in out_rt path 2015-09-02 15:31:00 -07:00
exthdrs.c ipv6: add complete rcu protection around np->opt 2015-12-02 23:37:16 -05:00
fib6_rules.c ipv6: fix the incorrect return value of throw route 2015-10-23 02:38:18 -07:00
icmp.c sock: enable timestamping using control messages 2016-04-04 15:50:30 -04:00
inet6_connection_sock.c soreuseport: fast reuseport TCP socket selection 2016-02-11 03:54:15 -05:00
inet6_hashtables.c tcp/dccp: do not touch listener sk_refcnt under synflood 2016-04-04 22:11:20 -04:00
ip6_checksum.c ipv6: Pass proto to csum_ipv6_magic as __u8 instead of unsigned short 2016-03-13 23:55:13 -04:00
ip6_fib.c ipv6: per netns FIB garbage collection 2016-03-08 15:16:51 -05:00
ip6_flowlabel.c ipv6: process socket-level control messages in IPv6 2016-04-04 15:50:30 -04:00
ip6_gre.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-03-08 12:34:12 -05:00
ip6_icmp.c ipv6: White-space cleansing : Line Layouts 2014-08-24 22:37:52 -07:00
ip6_input.c ipv4: namespacify ip_early_demux sysctl knob 2016-02-16 20:42:54 -05:00
ip6_offload.c tunnels: Don't apply GRO to multiple layers of encapsulation. 2016-03-20 16:33:40 -04:00
ip6_offload.h
ip6_output.c sock: enable timestamping using control messages 2016-04-04 15:50:30 -04:00
ip6_tunnel.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-03-08 12:34:12 -05:00
ip6_udp_tunnel.c ip_tunnel: add support for setting flow label via collect metadata 2016-03-11 15:14:26 -05:00
ip6_vti.c net: replace dst_cache ip6_tunnel implementation with the generic one 2016-02-16 20:21:48 -05:00
ip6mr.c net: ipmr, ip6mr: fix vif/tunnel failure race condition 2015-11-24 17:15:56 -05:00
ipcomp6.c ipv6: White-space cleansing : Structure layouts 2014-08-24 22:37:52 -07:00
ipv6_sockglue.c ipv6: process socket-level control messages in IPv6 2016-04-04 15:50:30 -04:00
Kconfig net: replace dst_cache ip6_tunnel implementation with the generic one 2016-02-16 20:21:48 -05:00
Makefile ila: Create net/ipv6/ila directory 2015-12-15 23:25:20 -05:00
mcast_snoop.c net: fix wrong skb_get() usage / crash in IGMP/MLD parsing code 2015-08-13 17:08:39 -07:00
mcast.c mld, igmp: Fix reserved tailroom calculation 2016-03-03 15:41:07 -05:00
mip6.c ipv6: use ktime_t for internal timestamps 2015-10-05 03:16:47 -07:00
ndisc.c ipv6: add option to drop unsolicited neighbor advertisements 2016-02-11 04:27:36 -05:00
netfilter.c ipv6: Pass struct net into ip6_route_me_harder 2015-09-29 20:21:32 +02:00
output_core.c ipv4, ipv6: Pass net into ip_local_out and ip6_local_out 2015-10-08 04:27:02 -07:00
ping.c sock: enable timestamping using control messages 2016-04-04 15:50:30 -04:00
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 sock: enable timestamping using control messages 2016-04-04 15:50:30 -04:00
reassembly.c net: use skb_postpush_rcsum instead of own implementations 2016-02-19 23:43:10 -05:00
route.c ipv6: enforce flowi6_oif usage in ip6_dst_lookup_tail() 2016-01-29 20:31:26 -08:00
sit.c tunnels: Remove encapsulation offloads on decap. 2016-03-20 16:33:40 -04:00
syncookies.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -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 tcp: increment sk_drops for listeners 2016-04-04 22:11:20 -04:00
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_impl.h net: Remove iocb argument from sendmsg and recvmsg 2015-03-02 13:06:31 -05:00
udp_offload.c GSO: Provide software checksum of tunneled UDP fragmentation offload 2016-02-26 14:23:35 -05:00
udp.c udp: enable MSG_PEEK at non-zero offset 2016-04-05 16:29:37 -04:00
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 ipv4/ipv6: Fix FSF address in file headers 2013-12-06 12:37:56 -05:00
xfrm6_mode_transport.c
xfrm6_mode_tunnel.c ipv6: update skb->csum when CE mark is propagated 2016-01-15 15:07:23 -05:00
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