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2c8c56e15d
linux/net/ipv6
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Eric Dumazet 2c8c56e15d net: introduce SO_INCOMING_CPU 
Alternative to RPS/RFS is to use hardware support for multiple
queues.

Then split a set of million of sockets into worker threads, each
one using epoll() to manage events on its own socket pool.

Ideally, we want one thread per RX/TX queue/cpu, but we have no way to
know after accept() or connect() on which queue/cpu a socket is managed.

We normally use one cpu per RX queue (IRQ smp_affinity being properly
set), so remembering on socket structure which cpu delivered last packet
is enough to solve the problem.

After accept(), connect(), or even file descriptor passing around
processes, applications can use :

 int cpu;
 socklen_t len = sizeof(cpu);

 getsockopt(fd, SOL_SOCKET, SO_INCOMING_CPU, &cpu, &len);

And use this information to put the socket into the right silo
for optimal performance, as all networking stack should run
on the appropriate cpu, without need to send IPI (RPS/RFS).

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-11-11 13:00:06 -05:00
..
netfilter netfilter: nf_reject_ipv6: split nf_send_reset6() in smaller functions 2014-10-31 12:49:57 +01:00
addrconf_core.c ipv6: remove rt6i_genid 2014-09-30 14:00:48 -04:00
addrconf.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-11-01 14:53:27 -04:00
addrlabel.c list: fix order of arguments for hlist_add_after(_rcu) 2014-08-06 18:01:24 -07:00
af_inet6.c ipv6: make fib6 serial number per namespace 2014-10-07 00:02:30 -04:00
ah6.c ipsec: Remove obsolete MAX_AH_AUTH_LEN 2014-09-18 10:54:36 +02:00
anycast.c ipv6: remove aca_lock spinlock from struct ifacaddr6 2014-10-14 13:15:15 -04:00
datagram.c net: Add and use skb_copy_datagram_msg() helper. 2014-11-05 16:46:40 -05:00
esp6.c net: esp: Convert NETDEBUG to pr_info 2014-11-06 15:11:10 -05:00
exthdrs_core.c ipv6: ipv6_find_hdr restore prev functionality 2014-02-27 18:27:26 -05:00
exthdrs_offload.c ipv6: Fix exthdrs offload registration. 2014-03-06 16:35:55 -05:00
exthdrs.c ipv6: include linux/uaccess.h instead of asm/uaccess.h 2014-10-27 16:03:52 -04:00
fib6_rules.c ipv6: move IPV6_TCLASS_SHIFT into ipv6.h and define a helper 2014-01-15 15:53:18 -08:00
icmp.c net: Remove trailing whitespace in tcp.h icmp.c syncookies.c 2014-10-24 00:13:10 -04:00
inet6_connection_sock.c ipv6: White-space cleansing : gaps between function and symbol export 2014-08-24 22:37:52 -07:00
inet6_hashtables.c ipv6: White-space cleansing : gaps between function and symbol export 2014-08-24 22:37:52 -07:00
ip6_checksum.c udp: Generic functions to set checksum 2014-06-04 22:46:38 -07:00
ip6_fib.c ipv6: don't walk node's leaf during serial number update 2014-10-07 00:02:30 -04:00
ip6_flowlabel.c net: Convert SEQ_START_TOKEN/seq_printf to seq_puts 2014-11-05 22:04:55 -05:00
ip6_gre.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-11-06 22:01:18 -05:00
ip6_icmp.c ipv6: White-space cleansing : Line Layouts 2014-08-24 22:37:52 -07:00
ip6_input.c ipv6: White-space cleansing : Line Layouts 2014-08-24 22:37:52 -07:00
ip6_offload.c net: Remove MPLS GSO feature. 2014-11-05 23:52:33 -08:00
ip6_offload.h ipv6: Pull IPv6 GSO registration out of the module 2012-11-15 17:39:24 -05:00
ip6_output.c net; ipv[46] - Remove 2 unnecessary NETDEBUG OOM messages 2014-11-06 15:11:10 -05:00
ip6_tunnel.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-11-06 22:01:18 -05:00
ip6_udp_tunnel.c udp: Need to make ip6_udp_tunnel.c have GPL license 2014-09-22 15:08:25 -04:00
ip6_vti.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-11-06 22:01:18 -05:00
ip6mr.c ipv6: spelling s/incomming/incoming 2014-10-30 15:51:43 -04:00
ipcomp6.c ipv6: White-space cleansing : Structure layouts 2014-08-24 22:37:52 -07:00
ipv6_sockglue.c ipv6: White-space cleansing : gaps between function and symbol export 2014-08-24 22:37:52 -07:00
Kconfig ip6_vti: Fix build when NET_IP_TUNNEL is not set. 2014-02-20 14:29:49 +01:00
Makefile udp_tunnel: Only build ip6_udp_tunnel.c when IPV6 is selected 2014-09-19 22:05:28 -04:00
mcast.c ipv6: mld: fix add_grhead skb_over_panic for devs with large MTUs 2014-11-05 22:12:30 -05:00
mip6.c ipv6: White-space cleansing : Structure layouts 2014-08-24 22:37:52 -07:00
ndisc.c ipv6: White-space cleansing : gaps between function and symbol export 2014-08-24 22:37:52 -07:00
netfilter.c netfilter: Fix potential use after free in ip6_route_me_harder() 2014-05-09 02:36:39 +02:00
output_core.c drivers/net, ipv6: Select IPv6 fragment idents for virtio UFO packets 2014-10-30 20:01:18 -04:00
ping.c net: Eliminate no_check from protosw 2014-05-23 16:28:53 -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 net: Add and use skb_copy_datagram_msg() helper. 2014-11-05 16:46:40 -05:00
reassembly.c ipv6: remove inline on static in c file 2014-10-30 15:51:43 -04:00
route.c ipv6: Avoid redoing fib6_lookup() with reachable = 0 by saving fn 2014-10-24 00:14:39 -04:00
sit.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-11-06 22:01:18 -05:00
syncookies.c net: allow setting ecn via routing table 2014-11-04 16:06:09 -05:00
sysctl_net_ipv6.c ipv6: add sysctl_mld_qrv to configure query robustness variable 2014-09-04 22:26:14 -07:00
tcp_ipv6.c net: introduce SO_INCOMING_CPU 2014-11-11 13:00:06 -05:00
tcpv6_offload.c net: Remove gso_send_check as an offload callback 2014-09-26 00:22:47 -04:00
tunnel6.c ipv6: White-space cleansing : gaps between function and symbol export 2014-08-24 22:37:52 -07:00
udp_impl.h net: ipv4/ipv6: Remove extern from function prototypes 2013-10-19 19:12:11 -04:00
udp_offload.c net: Remove MPLS GSO feature. 2014-11-05 23:52:33 -08:00
udp.c net: introduce SO_INCOMING_CPU 2014-11-11 13:00:06 -05:00
udplite.c net: Eliminate no_check from protosw 2014-05-23 16:28:53 -04:00
xfrm6_input.c ipv6: White-space cleansing : gaps between function and symbol export 2014-08-24 22:37:52 -07:00
xfrm6_mode_beet.c
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 xfrm6: Remove xfrm_tunnel_notifier 2014-03-14 07:28:08 +01:00
xfrm6_output.c ipv6: White-space cleansing : gaps between function and symbol export 2014-08-24 22:37:52 -07:00
xfrm6_policy.c xfrm6: fix a potential use after free in xfrm6_policy.c 2014-10-22 15:38:48 -04:00
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