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linux/include/net
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Eric Dumazet becb74f0ac net: increase sk_[max_]ack_backlog 
sk_ack_backlog & sk_max_ack_backlog were 16bit fields, meaning
listen() backlog was limited to 65535.

It is time to increase the width to allow much bigger backlog,
if admins change /proc/sys/net/core/somaxconn &
/proc/sys/net/ipv4/tcp_max_syn_backlog default values.

Tested:

echo 5000000 >/proc/sys/net/core/somaxconn
echo 5000000 >/proc/sys/net/ipv4/tcp_max_syn_backlog

Ran a SYNFLOOD test against a listener using listen(fd, 5000000)

myhost~# grep request_sock_TCP /proc/slabinfo
request_sock_TCP  4185642 4411940    304   13    1 : tunables   54   27    8 : slabdata 339380 339380      0

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-20 12:40:25 -04:00
..
9p
net/9p: remove a comment about pref member which doesn't exist
2014-11-06 14:59:19 -05:00
bluetooth
Bluetooth: Move generic mgmt command dispatcher to hci_sock.c
2015-03-17 18:03:08 +01:00
caif
caif: fix a signedness bug in cfpkt_iterate()
2015-02-20 17:35:14 -05:00
irda
irda: Convert function pointer arrays and uses to const
2014-12-10 15:33:16 -05:00
iucv
af_iucv: fix recvmsg by replacing skb_pull() function
2013-04-08 17:16:57 -04:00
netfilter
net: Introduce possible_net_t
2015-03-12 14:39:40 -04:00
netns
netns: constify net_hash_mix() and various callers
2015-03-18 22:00:34 -04:00
nfc
NFC: nci: Move logical connection structure allocation
2015-02-04 09:14:09 +01:00
phonet
net: remove my future former mail address
2012-06-17 16:29:38 -07:00
sctp
switch sctp_user_addto_chunk() and sctp_datamsg_from_user() to passing iov_iter
2014-11-24 05:16:40 -05:00
tc_act
net: sched: Introduce connmark action
2015-01-19 16:02:06 -05:00
6lowpan.h
ieee802154: 6lowpan: rename process_data and lowpan_process_data
2014-10-27 15:51:16 +01:00
act_api.h
net_sched: act: refuse to remove bound action outside
2014-02-12 19:23:32 -05:00
addrconf.h
net: ipv6: allow explicitly choosing optimistic addresses
2015-02-05 15:37:41 -08:00
af_ieee802154.h
ieee802154: mac802154: remove FSF address
2014-10-25 08:07:30 +02:00
af_rxrpc.h
af_rxrpc.h: Remove extern from function prototypes
2013-07-31 17:50:01 -07:00
af_unix.h
af_unix: improve STREAM behavior with fragmented memory
2013-08-10 01:16:44 -07:00
af_vsock.h
net: Remove iocb argument from sendmsg and recvmsg
2015-03-02 13:06:31 -05:00
ah.h
ipsec: Remove obsolete MAX_AH_AUTH_LEN
2014-09-18 10:54:36 +02:00
arp.h
neigh: Factor out ___neigh_lookup_noref
2015-03-04 00:23:23 -05:00
atmclip.h
…
ax25.h
ax25: Stop using magic neighbour cache operations.
2015-03-03 14:44:41 -05:00
ax88796.h
…
bond_3ad.h
bonding: Implement port churn-machine (AD standard 43.4.17).
2015-02-24 16:05:48 -05:00
bond_alb.h
net: Move bonding headers under include/net
2014-11-10 13:27:49 -05:00
bond_options.h
net: Move bonding headers under include/net
2014-11-10 13:27:49 -05:00
bonding.h
net/bonding: Fix potential bad memory access during bonding events
2015-02-09 14:03:53 -08:00
busy_poll.h
sched, net: Fixup busy_loop_us_clock()
2014-01-13 17:39:11 +01:00
cfg80211-wext.h
…
cfg80211.h
net: Introduce possible_net_t
2015-03-12 14:39:40 -04:00
cfg802154.h
nl802154: introduce support for cca settings
2014-12-19 00:19:23 +01:00
checksum.h
net: Fix remcsum in GRO path to not change packet
2015-02-11 15:12:09 -08:00
cipso_ipv4.h
cipso: don't use IPCB() to locate the CIPSO IP option
2015-02-11 14:46:37 -05:00
cls_cgroup.h
cgroup: clean up cgroup_subsys names and initialization
2014-02-08 10:36:58 -05:00
codel.h
net: use ktime_get_ns() and ktime_get_real_ns() helpers
2014-08-22 19:57:23 -07:00
compat.h
fold verify_iovec() into copy_msghdr_from_user()
2014-11-19 16:23:49 -05:00
datalink.h
net: Move prototype declaration to header file include/net/datalink.h from net/ipx/af_ipx.c
2014-02-09 17:32:50 -08:00
dcbevent.h
include/net/: Fix FSF address in file headers
2013-12-06 12:37:56 -05:00
dcbnl.h
net/dcb: Add IEEE QCN attribute
2015-03-06 21:50:02 -05:00
dn_dev.h
dn_dev: add support for IFA_FLAGS nl attribute
2013-12-10 21:50:00 -05:00
dn_fib.h
decnet (dn*.h): Remove extern from function prototypes
2013-09-20 14:49:32 -04:00
dn_neigh.h
DECnet: Only use neigh_ops for adding the link layer header
2015-03-06 14:54:22 -05:00
dn_nsp.h
decnet (dn*.h): Remove extern from function prototypes
2013-09-20 14:49:32 -04:00
dn_route.h
net: Move prototype declaration to appropriate header file from decnet/af_decnet.c
2014-02-09 17:32:49 -08:00
dn.h
net: Move prototype declaration to header file include/net/dn.h from net/decnet/af_decnet.c
2014-02-09 17:32:49 -08:00
dsa.h
net: dsa: utilize of_find_net_device_by_node
2015-03-09 23:50:21 -04:00
dsfield.h
ipv6: Optimize ipv6_change_dsfield().
2013-01-09 23:59:53 -08:00
dst_ops.h
net: Remove protocol from struct dst_ops
2015-03-09 16:06:10 -04:00
dst.h
xfrm: Generate queueing routes only from route lookup functions
2014-09-16 10:08:49 +02:00
esp.h
net: move pskb_put() to core code
2013-11-07 19:28:58 -05:00
ethoc.h
net: ethoc: set up MII management bus clock
2014-02-04 20:19:51 -08:00
fib_rules.h
net: Kill hold_net release_net
2015-03-12 14:39:40 -04:00
firewire.h
firewire net, ipv4 arp: Extend hardware address and remove driver-level packet inspection.
2013-03-26 12:32:13 -04:00
flow_keys.h
flow_keys: n_proto type should be __be16
2015-02-05 00:40:22 -08:00
flow.h
ipv4, fib: pass LOOPBACK_IFINDEX instead of 0 to flowi4_iif
2014-04-16 15:05:11 -04:00
flowcache.h
flowcache: Make flow cache name space aware
2014-02-12 07:02:11 +01:00
fou.h
ip_tunnel: Ops registration for secondary encap (fou, gue)
2014-11-12 15:01:35 -05:00
garp.h
garp.h: Remove extern from function prototypes
2013-09-20 14:49:33 -04:00
gen_stats.h
net: sched: enable per cpu qstats
2014-09-30 01:02:26 -04:00
genetlink.h
net: Introduce possible_net_t
2015-03-12 14:39:40 -04:00
geneve.h
openvswitch: Add support for checksums on UDP tunnels.
2015-01-28 23:04:15 -08:00
gre.h
gre: Call gso_make_checksum
2014-06-04 22:46:38 -07:00
gro_cells.h
ip_tunnel: Create percpu gro_cell
2015-01-18 01:56:32 -05:00
gue.h
gue: Protocol constants for remote checksum offload
2014-11-05 16:30:03 -05:00
icmp.h
icmp.h: Remove extern from function prototypes
2013-09-20 14:49:33 -04:00
ieee80211_radiotap.h
mac80211: propagate STBC / LDPC flags to radiotap
2014-02-06 09:34:58 +01:00
ieee802154_netdev.h
ieee802154: rework cca setting
2014-12-19 00:19:23 +01:00
if_inet6.h
ipv6: remove aca_lock spinlock from struct ifacaddr6
2014-10-14 13:15:15 -04:00
inet6_connection_sock.h
inet: get rid of central tcp/dccp listener timer
2015-03-20 12:40:25 -04:00
inet6_hashtables.h
ipv6: get rid of __inet6_hash()
2015-03-18 22:00:35 -04:00
inet_common.h
net: Remove iocb argument from sendmsg and recvmsg
2015-03-02 13:06:31 -05:00
inet_connection_sock.h
inet: get rid of central tcp/dccp listener timer
2015-03-20 12:40:25 -04:00
inet_ecn.h
tunnel: fix RFC number in comment for INET_ECN_decapsulate()
2014-05-07 15:30:52 -04:00
inet_frag.h
percpu_counter: add @gfp to percpu_counter_init()
2014-09-08 09:51:29 +09:00
inet_hashtables.h
inet: get rid of last __inet_hash_connect() argument
2015-03-18 22:00:35 -04:00
inet_sock.h
inet: fix request sock refcounting
2015-03-17 22:02:29 -04:00
inet_timewait_sock.h
net: add real socket cookies
2015-03-11 21:55:28 -04:00
inetpeer.h
inet: remove dead inetpeer sequence code
2014-09-08 16:42:42 -07:00
ip6_checksum.h
net: add gro_compute_pseudo functions
2014-08-24 18:09:23 -07:00
ip6_fib.h
net: fib6: convert cfg metric to u32 outside of table write lock
2015-01-05 22:55:24 -05:00
ip6_route.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2014-05-24 00:32:30 -04:00
ip6_tunnel.h
tunnels: advertise link netns via netlink
2015-01-19 14:32:03 -05:00
ip_fib.h
ipv4: FIB Local/MAIN table collapse
2015-03-11 16:22:14 -04:00
ip_tunnels.h
tunnels: advertise link netns via netlink
2015-01-19 14:32:03 -05:00
ip_vs.h
net: Introduce possible_net_t
2015-03-12 14:39:40 -04:00
ip.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2015-02-05 14:33:28 -08:00
ipcomp.h
…
ipconfig.h
…
ipv6.h
ipv4, ipv6: kill ip_mc_{join, leave}_group and ipv6_sock_mc_{join, drop}
2015-03-18 22:05:09 -04:00
ipx.h
switch ipxrtr_route_packet() from iovec to msghdr
2014-11-24 04:28:49 -05:00
iw_handler.h
iw_handler.h: Remove extern from function prototypes
2013-09-21 14:01:39 -04:00
lapb.h
lapb.h: Remove extern from function prototypes
2013-09-21 14:01:38 -04:00
lib80211.h
lib80211: remove unused print_ssid()
2014-10-14 02:18:27 +02:00
llc_c_ac.h
llc*.h: Remove extern from function prototypes
2013-09-21 14:01:38 -04:00
llc_c_ev.h
llc*.h: Remove extern from function prototypes
2013-09-21 14:01:38 -04:00
llc_c_st.h
llc: Make llc_conn_ev_qfyr_t function pointer arrays const
2014-12-10 15:21:24 -05:00
llc_conn.h
llc*.h: Remove extern from function prototypes
2013-09-21 14:01:38 -04:00
llc_if.h
llc*.h: Remove extern from function prototypes
2013-09-21 14:01:38 -04:00
llc_pdu.h
net: llc: fix order of evaluation in llc_conn_ac_inc_vr_by_1
2014-01-01 22:22:43 -05:00
llc_s_ac.h
llc*.h: Remove extern from function prototypes
2013-09-21 14:01:38 -04:00
llc_s_ev.h
llc*.h: Remove extern from function prototypes
2013-09-21 14:01:38 -04:00
llc_s_st.h
llc: Make llc_sap_action_t function pointer arrays const
2014-12-10 15:21:24 -05:00
llc_sap.h
llc*.h: Remove extern from function prototypes
2013-09-21 14:01:38 -04:00
llc.h
llc: make lock static
2014-01-03 20:56:48 -05:00
mac80211.h
mac80111: Add BIP-GMAC-128 and BIP-GMAC-256 ciphers
2015-01-27 11:10:13 +01:00
mac802154.h
ieee802154: cleanup ieee802154_le64_to_be64
2015-02-14 05:19:58 +01:00
mip6.h
include/net/: Fix FSF address in file headers
2013-12-06 12:37:56 -05:00
mld.h
ipv6: mld: answer mldv2 queries with mldv1 reports in mldv1 fallback
2014-09-22 16:23:15 -04:00
mpls.h
openvswitch: Add basic MPLS support to kernel
2014-11-05 23:52:33 -08:00
mrp.h
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2013-10-01 17:06:14 -04:00
ndisc.h
neigh: Factor out ___neigh_lookup_noref
2015-03-04 00:23:23 -05:00
neighbour.h
net: Introduce possible_net_t
2015-03-12 14:39:40 -04:00
net_namespace.h
net: Introduce possible_net_t
2015-03-12 14:39:40 -04:00
net_ratelimit.h
…
netevent.h
netevent/netlink.h: Remove extern from function prototypes
2013-09-21 14:01:39 -04:00
netlabel.h
netlabel: fix the netlbl_catmap_setlong() dummy function
2014-08-07 20:55:21 -04:00
netlink.h
netlink: make nlmsg_end() and genlmsg_end() void
2015-01-18 01:03:45 -05:00
netprio_cgroup.h
cgroup: clean up cgroup_subsys names and initialization
2014-02-08 10:36:58 -05:00
netrom.h
netrom.h: Remove extern from function prototypes
2013-09-21 14:01:39 -04:00
nexthop.h
…
nl802154.h
nl802154: introduce support for cca settings
2014-12-19 00:19:23 +01:00
p8022.h
p8022.h: Remove extern from function prototypes
2013-09-21 14:01:39 -04:00
ping.h
net: Remove iocb argument from sendmsg and recvmsg
2015-03-02 13:06:31 -05:00
pkt_cls.h
net: sched: remove tcf_proto from ematch calls
2014-10-06 18:02:32 -04:00
pkt_sched.h
net: rename vlan_tx_* helpers since "tx" is misleading there
2015-01-13 17:51:08 -05:00
protocol.h
net: Eliminate no_check from protosw
2014-05-23 16:28:53 -04:00
psnap.h
psnap.h: Remove extern from function prototypes
2013-09-23 01:51:08 -04:00
raw.h
raw/rawv6.h: Remove extern from function prototypes
2013-09-23 01:51:08 -04:00
rawv6.h
raw/rawv6.h: Remove extern from function prototypes
2013-09-23 01:51:08 -04:00
red.h
reciprocal_divide: update/correction of the algorithm
2014-01-21 23:17:20 -08:00
regulatory.h
cfg80211: allow wiphy specific regdomain management
2014-12-17 11:49:55 +01:00
request_sock.h
inet: get rid of central tcp/dccp listener timer
2015-03-20 12:40:25 -04:00
rose.h
rose.h: Remove extern from function prototypes
2013-09-23 01:51:08 -04:00
route.h
ipv4: per cpu uncached list
2015-01-15 18:26:16 -05:00
rtnetlink.h
rtnl: add link netns id to interface messages
2015-01-19 14:21:26 -05:00
sch_generic.h
net_sched: destroy proto tp when all filters are gone
2015-03-09 15:35:55 -04:00
scm.h
scm.h: Remove extern from function prototypes
2013-09-23 01:51:09 -04:00
secure_seq.h
inetpeer: get rid of ip_id_count
2014-06-02 11:00:41 -07:00
slhc_vj.h
…
snmp.h
Merge branch 'for-3.18-consistent-ops' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/percpu
2014-10-15 07:48:18 +02:00
sock.h
net: increase sk_[max_]ack_backlog
2015-03-20 12:40:25 -04:00
Space.h
drivers: net: Include new header file in sbni.c
2013-12-19 18:51:20 -05:00
stp.h
stp.h: Remove extern from function prototypes
2013-09-23 01:51:09 -04:00
switchdev.h
switchdev: add swdev ops
2015-03-16 00:14:42 -04:00
tcp_memcontrol.h
tcp_memcontrol: Kill struct tcp_memcontrol
2013-10-21 18:43:02 -04:00
tcp_states.h
inet: add TCP_NEW_SYN_RECV state
2015-03-12 22:58:12 -04:00
tcp.h
inet: drop prev pointer handling in request sock
2015-03-20 12:40:25 -04:00
timewait_sock.h
[PATCH] tcp: Cache inetpeer in timewait socket, and only when necessary.
2012-06-09 14:56:12 -07:00
transp_v6.h
ipv6: make IPV6_RECVPKTINFO work for ipv4 datagrams
2014-01-19 19:53:18 -08:00
tso.h
net: Add a software TSO helper API
2014-05-22 14:57:15 -04:00
udp_tunnel.h
udp: Do not require sock in udp_tunnel_xmit_skb
2015-01-24 23:15:40 -08:00
udp.h
net: Remove iocb argument from sendmsg and recvmsg
2015-03-02 13:06:31 -05:00
udplite.h
net: switch memcpy_fromiovec()/memcpy_fromiovecend() users to copy_from_iter()
2015-02-04 01:34:15 -05:00
vsock_addr.h
VSOCK: Move af_vsock.h and vsock_addr.h to include/net
2013-07-27 22:14:06 -07:00
vxlan.h
vxlan: Correct path typo in comment
2015-03-11 23:05:38 -04:00
wext.h
wext.h: Remove extern from function prototypes
2013-09-23 16:29:40 -04:00
wimax.h
net: treewide: Fix typo found in DocBook/networking.xml
2014-09-05 17:35:28 -07:00
x25.h
x25.h: Remove extern from function prototypes
2013-09-23 16:29:41 -04:00
x25device.h
…
xfrm.h
net: Introduce possible_net_t
2015-03-12 14:39:40 -04:00