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linux/include/net
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Jesse Gross a09a4c8dd1 tunnels: Remove encapsulation offloads on decap. 
If a packet is either locally encapsulated or processed through GRO
it is marked with the offloads that it requires. However, when it is
decapsulated these tunnel offload indications are not removed. This
means that if we receive an encapsulated TCP packet, aggregate it with
GRO, decapsulate, and retransmit the resulting frame on a NIC that does
not support encapsulation, we won't be able to take advantage of hardware
offloads even though it is just a simple TCP packet at this point.

This fixes the problem by stripping off encapsulation offload indications
when packets are decapsulated.

The performance impacts of this bug are significant. In a test where a
Geneve encapsulated TCP stream is sent to a hypervisor, GRO'ed, decapsulated,
and bridged to a VM performance is improved by 60% (5Gbps->8Gbps) as a
result of avoiding unnecessary segmentation at the VM tap interface.

Reported-by: Ramu Ramamurthy <sramamur@linux.vnet.ibm.com>
Fixes: 68c33163 ("v4 GRE: Add TCP segmentation offload for GRE")
Signed-off-by: Jesse Gross <jesse@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-03-20 16:33:40 -04:00
..
9p
bluetooth Bluetooth: Add support for limited privacy mode 2016-03-10 19:51:30 +01:00
caif
irda
iucv s390/iucv: do not use arrays as argument 2015-09-21 16:03:04 -07:00
netfilter netfilter: nft_masq: support port range 2016-03-02 20:05:27 +01:00
netns ipv6: per netns FIB garbage collection 2016-03-08 15:16:51 -05:00
nfc nfc: netlink: HCI event connectivity implementation 2015-12-29 19:06:20 +01:00
phonet sock: struct proto hash function may error 2016-02-11 03:54:14 -05:00
sctp sctp: keep fragmentation point aligned to word size 2016-03-20 16:31:12 -04:00
tc_act net/act_skbedit: Utility functions for mark action 2016-03-10 16:24:02 -05:00
6lowpan.h 6lowpan: iphc: add support for stateful compression 2016-02-23 20:29:40 +01:00
act_api.h net/sched: Macro instead of CONFIG_NET_CLS_ACT ifdef 2016-03-10 16:24:02 -05:00
addrconf.h inet: refactor inet[6]_lookup functions to take skb 2016-02-11 03:54:14 -05:00
af_ieee802154.h ieee802154: af_ieee802154: fix typo in comment. 2015-09-17 13:20:05 +02:00
af_rxrpc.h
af_unix.h unix: correctly track in-flight fds in sending process user_struct 2016-02-08 10:30:42 -05:00
af_vsock.h Revert "Merge branch 'vsock-virtio'" 2015-12-08 21:55:49 -05:00
ah.h
arp.h
atmclip.h
ax25.h
ax88796.h
bond_3ad.h bonding: 3ad: apply ad_actor settings changes immediately 2016-02-09 04:45:49 -05:00
bond_alb.h
bond_options.h bonding: convert num_grat_arp to the new bonding option API 2015-07-27 01:05:24 -07:00
bonding.h bonding: fix bond_get_stats() 2016-03-18 23:14:15 -04:00
busy_poll.h net: un-inline sk_busy_loop() 2015-11-18 16:17:38 -05:00
cfg80211-wext.h
cfg80211.h cfg80211: basic support for PBSS network type 2016-02-24 09:04:34 +01:00
cfg802154.h nl802154: add support for security layer 2015-09-30 13:16:44 +02:00
checksum.h csum: Update csum_block_add to use rotate instead of byteswap 2016-03-13 15:01:00 -04:00
cipso_ipv4.h
cls_cgroup.h net: wrap sock->sk_cgrp_prioidx and ->sk_classid inside a struct 2015-12-08 22:02:33 -05:00
codel.h net_sched: update hierarchical backlog too 2016-02-29 17:02:33 -05:00
compat.h
datalink.h
dcbevent.h
dcbnl.h
devlink.h Introduce devlink infrastructure 2016-03-01 16:07:29 -05:00
dn_dev.h
dn_fib.h
dn_neigh.h netfilter: Pass net into okfn 2015-09-17 17:18:37 -07:00
dn_nsp.h
dn_route.h
dn.h
dsa.h net: dsa: make port_bridge_leave return void 2016-03-14 16:05:31 -04:00
dsfield.h
dst_cache.h net: add dst_cache support 2016-02-16 20:21:48 -05:00
dst_metadata.h ip_tunnel: add support for setting flow label via collect metadata 2016-03-11 15:14:26 -05:00
dst_ops.h ipv4, ipv6: Pass net into __ip_local_out and __ip6_local_out 2015-10-08 04:27:02 -07:00
dst.h bpf, dst: add and use dst_tclassid helper 2016-03-18 19:38:46 -04:00
esp.h
ethoc.h net/ethoc: support big-endian register layout 2015-09-23 15:33:15 -07:00
fib_rules.h net: ipv6: use common fib_default_rule_pref 2015-09-09 14:19:50 -07:00
firewire.h
flow_dissector.h net/flow_dissector: Make dissector_uses_key() and skb_flow_dissector_target() public 2016-03-10 16:24:02 -05:00
flow.h ipv6, trace: fix tos reporting on fib6_table_lookup 2016-03-20 13:44:34 -04:00
flowcache.h
fou.h
garp.h
gen_stats.h
genetlink.h Revert "genl: Add genlmsg_new_unicast() for unicast message allocation" 2016-02-18 11:42:19 -05:00
geneve.h geneve: Add geneve_get_rx_port support 2015-12-16 10:58:56 -05:00
gre.h gre: Remove support for sharing GRE protocol hook. 2015-08-10 14:03:54 -07:00
gro_cells.h gro_cells: remove spinlock protecting receive queues 2015-08-31 15:17:17 -07:00
gue.h
hwbm.h net: add a hardware buffer management helper API 2016-03-14 12:19:46 -04:00
icmp.h
ieee80211_radiotap.h
ieee802154_netdev.h mac802154: constify ieee802154_llsec_ops structure 2016-01-04 20:40:41 +01:00
if_inet6.h
ila.h ila: Add generic ILA translation facility 2015-12-15 23:25:20 -05:00
inet6_connection_sock.h ipv6: remove obsolete inet6 functions 2015-10-03 04:32:42 -07:00
inet6_hashtables.h inet: refactor inet[6]_lookup functions to take skb 2016-02-11 03:54:14 -05:00
inet_common.h net: avoid NULL deref in inet_ctl_sock_destroy() 2015-11-02 22:46:09 -05:00
inet_connection_sock.h tcp/dccp: fix another race at listener dismantle 2016-02-18 11:35:51 -05:00
inet_ecn.h ipv6: update skb->csum when CE mark is propagated 2016-01-15 15:07:23 -05:00
inet_frag.h ipv4: namespacify ip fragment max dist sysctl knob 2016-02-16 20:42:54 -05:00
inet_hashtables.h soreuseport: fast reuseport TCP socket selection 2016-02-11 03:54:15 -05:00
inet_sock.h net: Allow accepted sockets to be bound to l3mdev domain 2015-12-18 14:43:38 -05:00
inet_timewait_sock.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-10-20 06:08:27 -07:00
inetpeer.h inet: tcp: fix inetpeer_set_addr_v4() 2015-12-16 00:14:12 -05:00
ip6_checksum.h ipv6: Pass proto to csum_ipv6_magic as __u8 instead of unsigned short 2016-03-13 23:55:13 -04:00
ip6_fib.h ipv6: Check rt->dst.from for the DST_NOCACHE route 2015-11-15 17:12:37 -05:00
ip6_route.h ipv6: enforce flowi6_oif usage in ip6_dst_lookup_tail() 2016-01-29 20:31:26 -08:00
ip6_tunnel.h net: replace dst_cache ip6_tunnel implementation with the generic one 2016-02-16 20:21:48 -05:00
ip_fib.h route: check and remove route cache when we get route 2016-02-18 11:31:36 -05:00
ip_tunnels.h tunnels: Remove encapsulation offloads on decap. 2016-03-20 16:33:40 -04:00
ip_vs.h ipvs: drop first packet to redirect conntrack 2016-03-07 11:53:30 +09:00
ip.h net: ipv4: Convert IP network timestamps to be y2038 safe 2016-03-01 17:18:44 -05:00
ipcomp.h
ipconfig.h
ipv6.h vxlan: fix populating tclass in vxlan6_get_route 2016-03-20 13:44:34 -04:00
ipx.h
iw_handler.h cfg80211/wext: fix message ordering 2016-01-29 17:13:43 +01:00
kcm.h kcm: mark helper functions inline 2016-03-10 14:42:03 -05:00
l3mdev.h net: l3mdev: address selection should only consider devices in L3 domain 2016-02-26 14:22:26 -05:00
lapb.h
lib80211.h
llc_c_ac.h
llc_c_ev.h
llc_c_st.h
llc_conn.h
llc_if.h
llc_pdu.h
llc_s_ac.h
llc_s_ev.h
llc_s_st.h
llc_sap.h
llc.h
lwtunnel.h lwtunnel: autoload of lwt modules 2016-02-21 22:00:28 -05:00
mac80211.h mac80211: move MU_MIMO_OWNER flag to ieee80211_vif 2016-02-24 09:04:40 +01:00
mac802154.h mac802154: use put and get unaligned functions 2016-03-10 19:51:28 +01:00
mip6.h
mld.h
mpls_iptunnel.h mpls: multipath route support 2015-10-23 06:26:42 -07:00
mpls.h
mrp.h
ndisc.h Revert "ipv6: ndisc: inherit metadata dst when creating ndisc requests" 2015-12-01 15:07:59 -05:00
neighbour.h net: add explicit logging and stat for neighbour table overflow 2015-08-10 13:46:21 -07:00
net_namespace.h netfilter: cttimeout: add netns support 2015-12-14 12:48:58 +01:00
net_ratelimit.h
netevent.h
netlabel.h
netlink.h netlink: add nla_get for le32 and le64 2015-09-30 13:16:44 +02:00
netprio_cgroup.h net: wrap sock->sk_cgrp_prioidx and ->sk_classid inside a struct 2015-12-08 22:02:33 -05:00
netrom.h
nexthop.h
nl802154.h nl802154: add support for security layer 2015-09-30 13:16:44 +02:00
p8022.h
ping.h sock: struct proto hash function may error 2016-02-11 03:54:14 -05:00
pkt_cls.h net/flower: Fix pointer cast 2016-03-11 12:04:37 -05:00
pkt_sched.h net: sched: consolidate tc_classify{,_compat} 2015-08-27 14:18:48 -07:00
protocol.h udp: restrict offloads to one namespace 2016-01-10 17:28:24 -05:00
psnap.h
raw.h sock: struct proto hash function may error 2016-02-11 03:54:14 -05:00
rawv6.h
red.h
regulatory.h
request_sock.h net: add inet_sk_transparent() helper 2015-12-22 17:03:05 -05:00
rose.h
route.h ipv4: Namespaceify ip_default_ttl sysctl knob 2016-02-16 20:42:54 -05:00
rtnetlink.h netlink: Rightsize IFLA_AF_SPEC size calculation 2015-10-21 19:15:20 -07:00
sch_generic.h net: sched: use pfifo_fast for non real queues 2016-03-03 17:38:46 -05:00
scm.h unix: correctly track in-flight fds in sending process user_struct 2016-02-08 10:30:42 -05:00
secure_seq.h
slhc_vj.h
snmp.h
sock_reuseport.h soreuseport: fix NULL ptr dereference SO_REUSEPORT after bind 2016-01-19 14:44:23 -05:00
sock.h sock: struct proto hash function may error 2016-02-11 03:54:14 -05:00
Space.h
stp.h
switchdev.h switchdev: Adding MDB entry offload 2016-01-10 16:50:20 -05:00
tcp_states.h
tcp.h Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2016-03-19 10:05:34 -07:00
timewait_sock.h
transp_v6.h
tso.h net: tso: add support for IPv6 2015-10-26 22:24:22 -07:00
udp_tunnel.h ip_tunnel: add support for setting flow label via collect metadata 2016-03-11 15:14:26 -05:00
udp.h sock: struct proto hash function may error 2016-02-11 03:54:14 -05:00
udplite.h
vsock_addr.h
vxlan.h vxlan: support setting IPv6 flow label 2016-03-11 15:14:26 -05:00
wext.h
wimax.h
x25.h
x25device.h
xfrm.h xfrm: add rcu protection to sk->sk_policy[] 2015-12-11 19:22:06 -05:00