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Wei Wang ac8f1710c1 tcp: reflect tos value received in SYN to the socket 
This commit adds a new TCP feature to reflect the tos value received in
SYN, and send it out on the SYN-ACK, and eventually set the tos value of
the established socket with this reflected tos value. This provides a
way to set the traffic class/QoS level for all traffic in the same
connection to be the same as the incoming SYN request. It could be
useful in data centers to provide equivalent QoS according to the
incoming request.
This feature is guarded by /proc/sys/net/ipv4/tcp_reflect_tos, and is by
default turned off.

Signed-off-by: Wei Wang <weiwan@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-10 13:15:40 -07:00
..
bpfilter
net: Revert "net: optimize the sockptr_t for unified kernel/user address spaces"
2020-08-10 12:06:44 -07:00
netfilter
netfilter: delete repeated words
2020-08-28 20:11:38 +02:00
af_inet.c
io_uring: allow tcp ancillary data for __sys_recvmsg_sock()
2020-08-24 16:16:06 -07:00
ah4.c
inet: Use fallthrough;
2020-03-12 15:55:00 -07:00
arp.c
inet: Use fallthrough;
2020-03-12 15:55:00 -07:00
bpf_tcp_ca.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next
2020-03-30 19:52:37 -07:00
cipso_ipv4.c
cipso: fix 'audit_secid' kernel-doc warning in cipso_ipv4.c
2020-09-08 20:03:36 -07:00
datagram.c
inet: stop leaking jiffies on the wire
2019-11-01 14:57:52 -07:00
devinet.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-05-31 17:48:46 -07:00
esp4_offload.c
net: Add MODULE_DESCRIPTION entries to network modules
2020-06-20 21:33:57 -07:00
esp4.c
ESP: Export esp_output_fill_trailer function
2020-02-19 13:52:32 +01:00
fib_frontend.c
ipv4: nexthop version of fib_info_nh_uses_dev
2020-05-26 16:06:07 -07:00
fib_lookup.h
net: add net available in build_state
2020-03-29 22:30:57 -07:00
fib_notifier.c
net: fib_notifier: propagate extack down to the notifier block callback
2019-10-04 11:10:56 -07:00
fib_rules.c
fib: use indirect call wrappers in the most common fib_rules_ops
2020-07-28 17:42:31 -07:00
fib_semantics.c
net: Fix the arp error in some cases
2020-06-18 20:21:51 -07:00
fib_trie.c
ipv4: Silence suspicious RCU usage warning
2020-08-26 15:58:48 -07:00
fou.c
net: ipv4: delete repeated words
2020-08-24 17:31:20 -07:00
gre_demux.c
gre: fix uninit-value in __iptunnel_pull_header
2020-03-08 21:25:37 -07:00
gre_offload.c
net: gre: recompute gre csum for sctp over gre tunnels
2020-08-03 15:29:44 -07:00
icmp.c
net: clean up codestyle
2020-08-31 12:33:34 -07:00
igmp.c
ip*_mc_gsfget(): lift copyout of struct group_filter into callers
2020-05-20 20:31:27 -04:00
inet_connection_sock.c
net: refactor bind_bucket fastreuse into helper
2020-08-11 15:49:08 -07:00
inet_diag.c
ip: expose inet sockopts through inet_diag
2020-09-03 15:17:28 -07:00
inet_fragment.c
inet: frags: re-introduce skb coalescing for local delivery
2019-08-08 15:55:10 -07:00
inet_hashtables.c
net: ipv4: remove unused arg exact_dif in compute_score
2020-08-31 13:08:29 -07:00
inet_timewait_sock.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
inetpeer.c
inetpeer: fix data-race in inet_putpeer / inet_putpeer
2019-11-07 16:15:56 -08:00
ip_forward.c
ipv4: Revert removal of rt_uses_gateway
2019-09-20 18:23:33 -07:00
ip_fragment.c
inet: frags: re-introduce skb coalescing for local delivery
2019-08-08 15:55:10 -07:00
ip_gre.c
net: add a new ndo_tunnel_ioctl method
2020-05-19 15:45:11 -07:00
ip_input.c
bpf: Add socket assign support
2020-03-30 13:45:04 -07:00
ip_options.c
net: clean up codestyle for net/ipv4
2020-08-25 06:28:02 -07:00
ip_output.c
ip: pass tos into ip_build_and_send_pkt()
2020-09-10 13:15:40 -07:00
ip_sockglue.c
net: Remove duplicated midx check against 0
2020-08-25 06:23:59 -07:00
ip_tunnel_core.c
Revert "ipv4: tunnel: fix compilation on ARCH=um"
2020-08-12 13:26:37 -07:00
ip_tunnel.c
ip_tunnel: fix use-after-free in ip_tunnel_lookup()
2020-06-18 20:12:34 -07:00
ip_vti.c
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next
2020-07-30 14:39:31 -07:00
ipcomp.c
ipcomp: assign if_id to child tunnel from parent tunnel
2020-07-09 12:55:37 +02:00
ipconfig.c
Documentation: nfsroot.rst: Fix references to nfsroot.rst
2020-03-02 13:11:46 -07:00
ipip.c
net: ipip: implement header_ops->parse_protocol for AF_PACKET
2020-06-30 12:29:39 -07:00
ipmr_base.c
net: fib_notifier: propagate extack down to the notifier block callback
2019-10-04 11:10:56 -07:00
ipmr.c
ipmr: Use full VIF ID in netlink cache reports
2020-09-10 12:25:51 -07:00
Kconfig
net: ipv4: remove duplicate "the the" phrase in Kconfig text
2020-08-18 16:02:16 -07:00
Makefile
udp_tunnel: add central NIC RX port offload infrastructure
2020-07-10 13:54:00 -07:00
metrics.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
netfilter.c
…
netlink.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
nexthop.c
ipv4: nexthop: Correctly update nexthop group when replacing a nexthop
2020-08-26 16:00:51 -07:00
ping.c
net: clean up codestyle
2020-08-31 12:33:34 -07:00
proc.c
tcp: add SNMP counter for no. of duplicate segments reported by DSACK
2020-07-17 12:54:30 -07:00
protocol.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
raw_diag.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-03-12 22:34:48 -07:00
raw.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-09-04 21:28:59 -07:00
route.c
net: clean up codestyle
2020-08-31 12:33:34 -07:00
syncookies.c
tcp: record received TOS value in the request socket
2020-09-10 13:15:40 -07:00
sysctl_net_ipv4.c
tcp: reflect tos value received in SYN to the socket
2020-09-10 13:15:40 -07:00
tcp_bbr.c
tcp_bbr: improve arithmetic division in bbr_update_bw()
2020-01-21 10:45:49 +01:00
tcp_bic.c
tcp: fix stretch ACK bugs in BIC
2020-03-16 18:26:54 -07:00
tcp_bpf.c
net: sk_msg: Simplify sk_psock initialization
2020-08-21 15:16:11 -07:00
tcp_cdg.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_cong.c
tcp: make sure listeners don't initialize congestion-control state
2020-07-09 13:07:45 -07:00
tcp_cubic.c
tcp_cubic: fix spurious HYSTART_DELAY exit upon drop in min RTT
2020-06-25 16:08:47 -07:00
tcp_dctcp.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
tcp_dctcp.h
…
tcp_diag.c
inet_diag: Move the INET_DIAG_REQ_BYTECODE nlattr to cb->data
2020-02-27 18:50:19 -08:00
tcp_fastopen.c
bpf: tcp: Add bpf_skops_established()
2020-08-24 14:35:00 -07:00
tcp_highspeed.c
Replace HTTP links with HTTPS ones: IPv*
2020-07-06 13:23:03 -07:00
tcp_htcp.c
Replace HTTP links with HTTPS ones: IPv*
2020-07-06 13:23:03 -07:00
tcp_hybla.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_illinois.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_input.c
tcp: record received TOS value in the request socket
2020-09-10 13:15:40 -07:00
tcp_ipv4.c
tcp: reflect tos value received in SYN to the socket
2020-09-10 13:15:40 -07:00
tcp_lp.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_metrics.c
net-tcp: Disable TCP ssthresh metrics cache by default
2019-12-09 20:17:48 -08:00
tcp_minisocks.c
bpf: tcp: Allow bpf prog to write and parse TCP header option
2020-08-24 14:35:00 -07:00
tcp_nv.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_offload.c
treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152
2019-05-30 11:26:32 -07:00
tcp_output.c
bpf: tcp: Allow bpf prog to write and parse TCP header option
2020-08-24 14:35:00 -07:00
tcp_rate.c
treewide: Add SPDX license identifier for missed files
2019-05-21 10:50:45 +02:00
tcp_recovery.c
…
tcp_scalable.c
net: ipv4: delete repeated words
2020-08-24 17:31:20 -07:00
tcp_timer.c
net: ipv4: kerneldoc fixes
2020-07-13 17:20:39 -07:00
tcp_ulp.c
bpf: sockmap: Only check ULP for TCP sockets
2020-03-09 22:34:58 +01:00
tcp_vegas.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_vegas.h
…
tcp_veno.c
Replace HTTP links with HTTPS ones: IPv*
2020-07-06 13:23:03 -07:00
tcp_westwood.c
treewide: Add SPDX license identifier for more missed files
2019-05-21 10:50:45 +02:00
tcp_yeah.c
tcp: fix stretch ACK bugs in Yeah
2020-03-16 18:26:55 -07:00
tcp.c
tcp: bpf: Optionally store mac header in TCP_SAVE_SYN
2020-08-24 14:35:00 -07:00
tunnel4.c
tunnel4: add cb_handler to struct xfrm_tunnel
2020-07-09 12:51:36 +02:00
udp_bpf.c
net: sk_msg: Simplify sk_psock initialization
2020-08-21 15:16:11 -07:00
udp_diag.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
2020-03-12 22:34:48 -07:00
udp_impl.h
net: pass a sockptr_t into ->setsockopt
2020-07-24 15:41:54 -07:00
udp_offload.c
udp: initialize is_flist with 0 in udp_gro_receive
2020-03-30 10:35:03 -07:00
udp_tunnel_core.c
udp_tunnel: add central NIC RX port offload infrastructure
2020-07-10 13:54:00 -07:00
udp_tunnel_nic.c
udp_tunnel: add the ability to hard-code IANA VXLAN
2020-08-03 10:13:54 -07:00
udp_tunnel_stub.c
udp_tunnel: add central NIC RX port offload infrastructure
2020-07-10 13:54:00 -07:00
udp.c
net: ipv4: delete repeated words
2020-08-24 17:31:20 -07:00
udplite.c
net/ipv4: remove compat_ip_{get,set}sockopt
2020-07-19 18:16:41 -07:00
xfrm4_input.c
xfrm: state: remove extract_input indirection from xfrm_state_afinfo
2020-05-06 09:40:08 +02:00
xfrm4_output.c
xfrm: fix unused variable warning if CONFIG_NETFILTER=n
2020-05-11 15:12:27 +02:00
xfrm4_policy.c
net: add bool confirm_neigh parameter for dst_ops.update_pmtu
2019-12-24 22:28:54 -08:00
xfrm4_protocol.c
xfrm: add route lookup to xfrm4_rcv_encap
2019-12-09 09:59:07 +01:00
xfrm4_state.c
xfrm: remove output_finish indirection from xfrm_state_afinfo
2020-05-06 09:40:08 +02:00
xfrm4_tunnel.c
xfrm: remove type and offload_type map from xfrm_state_afinfo
2019-06-06 08:34:50 +02:00