Eric Dumazet
be9f4a44e7
ipv4: tcp: remove per net tcp_sock ...
tcp_v4_send_reset() and tcp_v4_send_ack() use a single socket
per network namespace.
This leads to bad behavior on multiqueue NICS, because many cpus
contend for the socket lock and once socket lock is acquired, extra
false sharing on various socket fields slow down the operations.
To better resist to attacks, we use a percpu socket. Each cpu can
run without contention, using appropriate memory (local node)
Additional features :
1) We also mirror the queue_mapping of the incoming skb, so that
answers use the same queue if possible.
2) Setting SOCK_USE_WRITE_QUEUE socket flag speedup sock_wfree()
3) We now limit the number of in-flight RST/ACK [1] packets
per cpu, instead of per namespace, and we honor the sysctl_wmem_default
limit dynamically. (Prior to this patch, sysctl_wmem_default value was
copied at boot time, so any further change would not affect tcp_sock
limit)
[1] These packets are only generated when no socket was matched for
the incoming packet.
Reported-by: Bill Sommerfeld <wsommerfeld@google.com>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-19 10:35:30 -07:00
9p: Reduce object size with CONFIG_NET_9P_DEBUG
2012-01-05 10:51:44 -06:00
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
2012-06-13 15:35:35 -04:00
caif-hsi: Remove use of module parameters
2012-06-25 16:44:12 -07:00
af_iucv: add shutdown for HS transport
2012-03-07 22:52:24 -08:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2012-07-10 23:56:33 -07:00
ipv4: tcp: remove per net tcp_sock
2012-07-19 10:35:30 -07:00
NFC: Allow HCI driver to pre-open pipes to some gates
2012-07-09 16:42:12 -04:00
net: remove my future former mail address
2012-06-17 16:29:38 -07:00
sctp: Adjust PMTU updates to accomodate route invalidation.
2012-07-16 03:57:14 -07:00
net: sched: constify tcf_proto and tc_action
2011-07-06 02:52:16 -07:00
ipv6: add ipv6_addr_hash() helper
2012-07-18 11:28:46 -07:00
af_unix: speedup /proc/net/unix
2012-06-08 14:27:23 -07:00
ipv4: Make neigh lookups directly in output packet path.
2012-07-05 01:02:12 -07:00
atm: clip: Use device neigh support on top of "arp_tbl".
2011-11-30 18:51:03 -05:00
net ax25: Fix the build when sysctl support is disabled.
2012-04-23 22:14:47 -04:00
cfg80211: remove unused wext handler exports
2011-08-08 14:26:29 -04:00
cfg80211: bitrate calculation for 60g
2012-07-05 15:18:32 +02:00
cipso: handle CIPSO options correctly when NetLabel is disabled
2012-06-01 14:18:29 -04:00
fq_codel: should use qdisc backlog as threshold
2012-05-16 15:30:26 -04:00
net: cleanup unsigned to unsigned int
2012-04-15 12:44:40 -04:00
dcb: Add stub routines for !CONFIG_DCB
2011-10-06 15:49:51 -04:00
net/dcb: Add an optional max rate attribute
2012-04-05 05:08:04 -04:00
net: cleanup unsigned to unsigned int
2012-04-15 12:44:40 -04:00
net: cleanup unsigned to unsigned int
2012-04-15 12:44:40 -04:00
decnet: Use neighbours privately in dn_route struct.
2012-07-05 01:12:14 -07:00
dsa: Include linux/if_ether.h to fix build error
2011-12-01 11:41:06 -05:00
net: Kill set_dst_metric_rtt().
2012-07-10 22:40:07 -07:00
net: Pass optional SKB and SK arguments to dst_ops->{update_pmtu,redirect}()
2012-07-17 03:29:28 -07:00
ipv4: Elide fib_validate_source() completely when possible.
2012-06-29 01:36:36 -07:00
inet: Kill FLOWI_FLAG_PRECOW_METRICS.
2012-07-10 22:40:12 -07:00
flow_dissector: use a 64bit load/store
2011-11-29 13:17:03 -05:00
net: Use NLMSG_DEFAULT_SIZE in combination with nlmsg_new()
2012-06-28 17:56:43 -07:00
net: cleanup unsigned to unsigned int
2012-04-15 12:44:40 -04:00
wireless: move ieee80211chan2mhz macro
2011-11-11 12:32:50 -05:00
6LoWPAN: add fragmentation support
2011-11-14 00:19:42 -05:00
mac802154: declare reduced mlme operations
2012-05-16 15:16:56 -04:00
net: delete all instances of special processing for token ring
2012-05-15 20:14:35 -04:00
ipv6: Add helper inet6_csk_update_pmtu().
2012-07-16 03:44:56 -07:00
net: use IS_ENABLED(CONFIG_IPV6)
2011-12-11 18:25:16 -05:00
ipv4: Add helper inet_csk_update_pmtu().
2012-07-16 03:28:06 -07:00
inet: add rfc 3168 extract in front of INET_ECN_encapsulate()
2011-10-22 01:25:23 -04:00
ip_frag: struct inet_frags match() method returns a bool
2012-05-18 01:40:27 -04:00
ipv4: Early TCP socket demux.
2012-06-19 21:22:05 -07:00
inet: Kill FLOWI_FLAG_PRECOW_METRICS.
2012-07-10 22:40:12 -07:00
inet: remove rcu protection on tw_net
2011-12-14 13:34:55 -05:00
ipv4: Maintain redirect and PMTU info in struct rtable again.
2012-07-10 22:40:14 -07:00
ipv4: tcp: remove per net tcp_sock
2012-07-19 10:35:30 -07:00
ipv6: Store route neighbour in rt6_info struct.
2012-07-05 02:41:58 -07:00
ipv6: fix inet6_csk_xmit()
2012-07-18 08:59:58 -07:00
ipv6_tunnel: Allow receiving packets on the fallback tunnel if they pass sanity checks
2012-06-29 00:52:32 -07:00
ipv4: use seqlock for nh_exceptions
2012-07-19 10:30:14 -07:00
ipvs: add support for sync threads
2012-05-08 19:40:33 +02:00
tunnel: implement 64 bits statistics
2012-04-14 14:47:05 -04:00
ipv6: add ipv6_addr_hash() helper
2012-07-18 11:28:46 -07:00
lapb: Neaten debugging
2012-05-17 18:45:20 -04:00
include: replace linux/module.h with "struct module" wherever possible
2011-10-31 19:32:32 -04:00
atomic: use <linux/atomic.h>
2011-07-26 16:49:47 -07:00
net: cleanup unsigned to unsigned int
2012-04-15 12:44:40 -04:00
net: delete all instances of special processing for token ring
2012-05-15 20:14:35 -04:00
mac80211: add TX prepare API
2012-07-03 13:50:34 +02:00
mac802154: add wpan device-class support
2012-06-26 21:06:11 -07:00
ipv6: Export ndisc option parsing from ndisc.c
2012-07-11 23:39:11 -07:00
net: Do delayed neigh confirmation.
2012-07-05 01:03:06 -07:00
net: make sock diag per-namespace
2012-07-16 22:31:34 -07:00
net: Pass neighbours and dest address into NETEVENT_REDIRECT events.
2012-07-05 02:21:55 -07:00
doc: Update the email address for Paul Moore in various source files
2011-08-01 17:58:33 -07:00
netlink: Delete all NLA_PUT*() macros.
2012-04-02 04:33:45 -04:00
netprio_cgroup: fix wrong memory access when NETPRIO_CGROUP=m
2012-02-10 15:08:57 -05:00
net: cleanup unsigned to unsigned int
2012-04-15 12:44:40 -04:00
ipv4: Kill early demux method return value.
2012-06-27 22:01:22 -07:00
ipv6: bool/const conversions phase2
2012-05-19 01:08:16 -04:00
net_sched: red: Make minor corrections to comments
2012-04-16 23:53:11 -04:00
cfg80211: pass DFS region to drivers through reg_notifier()
2011-11-21 16:20:41 -05:00
tcp: Change possible SYN flooding messages
2011-09-15 14:49:43 -04:00
ipv4: Kill ip_rt_redirect().
2012-07-11 21:30:08 -07:00
rtnetlink: ops->get_tx_queue() cannot take a const 'tb'.
2012-04-13 14:21:04 -04:00
bonding: Fix corrupted queue_mapping
2012-06-12 15:29:21 -07:00
af_unix: dont send SCM_CREDENTIALS by default
2011-09-28 13:29:50 -04:00
tcp: add const qualifiers where possible
2011-10-21 05:22:42 -04:00
Merge branch 'for-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2012-01-09 13:08:28 -08:00
tcp: TCP Small Queues
2012-07-11 18:12:59 -07:00
tcp: implement RFC 5961 3.2
2012-07-17 01:36:20 -07:00
cgroup: pass struct mem_cgroup instead of struct cgroup to socket memcg
2012-04-10 10:04:07 -07:00
[PATCH] tcp: Cache inetpeer in timewait socket, and only when necessary.
2012-06-09 14:56:12 -07:00
net: relax PKTINFO non local ipv6 udp xmit check
2011-08-30 17:39:01 -04:00
net/ipv6/udp: UDP encapsulation: introduce encap_rcv hook into IPv6
2012-04-28 22:21:51 -04:00
net: ipv4: Standardize prefixes for message logging
2012-03-12 17:05:21 -07:00
net: cleanup unsigned to unsigned int
2012-04-15 12:44:40 -04:00
mac802154: monitor device support
2012-05-16 15:17:08 -04:00
net: cleanup unsigned to unsigned int
2012-04-15 12:44:40 -04:00
net/ipv4: VTI support rx-path hook in xfrm4_mode_tunnel.
2012-07-18 09:36:12 -07:00
be9f4a44e7