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linux/net/ipv4
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Eric Dumazet eb9344781a tcp: add a force_schedule argument to sk_stream_alloc_skb() 
In commit 8e4d980ac215 ("tcp: fix behavior for epoll edge trigger")
we fixed a possible hang of TCP sockets under memory pressure,
by allowing sk_stream_alloc_skb() to use sk_forced_mem_schedule()
if no packet is in socket write queue.

It turns out there are other cases where we want to force memory
schedule :

tcp_fragment() & tso_fragment() need to split a big TSO packet into
two smaller ones. If we block here because of TCP memory pressure,
we can effectively block TCP socket from sending new data.
If no further ACK is coming, this hang would be definitive, and socket
has no chance to effectively reduce its memory usage.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-05-21 16:56:40 -04:00
..
netfilter
Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
2015-05-18 14:47:36 -04:00
af_inet.c
net: Modify sk_alloc to not reference count the netns of kernel sockets.
2015-05-11 10:50:18 -04:00
ah4.c
ipsec: Remove obsolete MAX_AH_AUTH_LEN
2014-09-18 10:54:36 +02:00
arp.c
netfilter: Pass socket pointer down through okfn().
2015-04-07 15:25:55 -04:00
cipso_ipv4.c
ipv4: coding style: comparison for inequality with NULL
2015-04-03 12:11:15 -04:00
datagram.c
net: Save TX flow hash in sock and set in skbuf on xmit
2014-07-07 21:14:21 -07:00
devinet.c
ipv4: coding style: comparison for inequality with NULL
2015-04-03 12:11:15 -04:00
esp4.c
ipv4: coding style: comparison for equality with NULL
2015-04-03 12:11:15 -04:00
fib_frontend.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2015-04-06 22:34:15 -04:00
fib_lookup.h
ipv4: FIB Local/MAIN table collapse
2015-03-11 16:22:14 -04:00
fib_rules.c
ipv4: coding style: comparison for equality with NULL
2015-04-03 12:11:15 -04:00
fib_semantics.c
ipv4: remove the unnecessary codes in fib_info_hash_move
2015-05-02 22:17:44 -04:00
fib_trie.c
switchdev: s/netdev_switch_/switchdev_/ and s/NETDEV_SWITCH_/SWITCHDEV_/
2015-05-12 18:43:52 -04:00
fou.c
fou: avoid missing unlock in failure path
2015-04-16 12:11:19 -04:00
geneve_core.c
geneve_core: identify as driver library in modules description
2015-05-13 15:59:13 -04:00
gre_demux.c
net: Fix GRE RX to use skb_transport_header for GRE header offset
2014-09-08 15:23:05 -07:00
gre_offload.c
ipv4: coding style: comparison for inequality with NULL
2015-04-03 12:11:15 -04:00
icmp.c
ipv4: coding style: comparison for equality with NULL
2015-04-03 12:11:15 -04:00
igmp.c
net: Export IGMP/MLD message validation code
2015-05-04 14:49:23 -04:00
inet_connection_sock.c
inet: fix possible panic in reqsk_queue_unlink()
2015-04-24 11:39:15 -04:00
inet_diag.c
tcp: prepare CC get_info() access from getsockopt()
2015-04-29 17:10:38 -04:00
inet_fragment.c
ipv4: coding style: comparison for equality with NULL
2015-04-03 12:11:15 -04:00
inet_hashtables.c
tcp/dccp: get rid of central timewait timer
2015-04-13 16:40:05 -04:00
inet_lro.c
lro: remove dead code
2013-12-29 16:34:25 -05:00
inet_timewait_sock.c
tcp/dccp: tw_timer_handler() is static
2015-05-13 15:21:33 -04:00
inetpeer.c
inet: remove dead inetpeer sequence code
2014-09-08 16:42:42 -07:00
ip_forward.c
ip_forward: Drop frames with attached skb->sk
2015-04-20 14:07:33 -04:00
ip_fragment.c
IPv4: skip ICMP for bridge contrack users when defrag expires
2015-05-19 00:15:27 -04:00
ip_gre.c
ipv4: coding style: comparison for equality with NULL
2015-04-03 12:11:15 -04:00
ip_input.c
netfilter: Pass socket pointer down through okfn().
2015-04-07 15:25:55 -04:00
ip_options.c
ipv4: coding style: comparison for inequality with NULL
2015-04-03 12:11:15 -04:00
ip_output.c
bridge_netfilter: No ICMP packet on IPv4 fragmentation error
2015-05-19 00:15:39 -04:00
ip_sockglue.c
ipv4: coding style: comparison for inequality with NULL
2015-04-03 12:11:15 -04:00
ip_tunnel_core.c
ip_tunnel: Report Rx dropped in ip_tunnel_get_stats64
2015-05-14 22:30:54 -04:00
ip_tunnel.c
udp_tunnel: Pass UDP socket down through udp_tunnel{, 6}_xmit_skb().
2015-04-07 15:29:08 -04:00
ip_vti.c
ipv4: coding style: comparison for inequality with NULL
2015-04-03 12:11:15 -04:00
ipcomp.c
ipv4: coding style: comparison for equality with NULL
2015-04-03 12:11:15 -04:00
ipconfig.c
ipv4: coding style: comparison for equality with NULL
2015-04-03 12:11:15 -04:00
ipip.c
ipip: fix one sparse error
2015-05-17 13:08:29 -04:00
ipmr.c
netfilter: Pass socket pointer down through okfn().
2015-04-07 15:25:55 -04:00
Kconfig
geneve: Rename support library as geneve_core
2015-05-13 15:59:13 -04:00
Makefile
geneve: Rename support library as geneve_core
2015-05-13 15:59:13 -04:00
netfilter.c
netfilter: Use nf_hook_state in nf_queue_entry.
2015-04-04 12:25:22 -04:00
ping.c
ipv4: Missing sk_nulls_node_init() in ping_unhash().
2015-05-01 22:02:47 -04:00
proc.c
tcp: add TCPWinProbe and TCPKeepAlive SNMP counters
2015-05-09 16:42:32 -04:00
protocol.c
net: Export inet_offloads and inet6_offloads
2014-09-19 17:15:31 -04:00
raw.c
Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
2015-04-13 18:18:05 -04:00
route.c
net: ipv4: route: Fix sending IGMP messages with link address
2015-05-04 00:04:08 -04:00
syncookies.c
tcp: fix ipv4 mapped request socks
2015-03-25 00:57:48 -04:00
sysctl_net_ipv4.c
tcp: add rfc3168, section 6.1.1.1. fallback
2015-05-19 16:53:37 -04:00
tcp_bic.c
tcp: stretch ACK fixes prep
2015-01-28 22:18:37 -08:00
tcp_cong.c
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
2015-03-20 18:51:09 -04:00
tcp_cubic.c
tcp: restore 1.5x per RTT limit to CUBIC cwnd growth in congestion avoidance
2015-03-11 16:51:51 -04:00
tcp_dctcp.c
tcp: prepare CC get_info() access from getsockopt()
2015-04-29 17:10:38 -04:00
tcp_diag.c
ipv4: coding style: comparison for inequality with NULL
2015-04-03 12:11:15 -04:00
tcp_fastopen.c
tcp: add tcpi_bytes_received to tcp_info
2015-04-29 17:10:37 -04:00
tcp_highspeed.c
tcp: whitespace fixes
2014-09-01 18:12:45 -07:00
tcp_htcp.c
tcp: whitespace fixes
2014-09-01 18:12:45 -07:00
tcp_hybla.c
tcp: whitespace fixes
2014-09-01 18:12:45 -07:00
tcp_illinois.c
tcp: prepare CC get_info() access from getsockopt()
2015-04-29 17:10:38 -04:00
tcp_input.c
tcp: allow one skb to be received per socket under memory pressure
2015-05-17 22:45:49 -04:00
tcp_ipv4.c
tcp: add rfc3168, section 6.1.1.1. fallback
2015-05-19 16:53:37 -04:00
tcp_lp.c
tcp: remove in_flight parameter from cong_avoid() methods
2014-05-03 19:23:07 -04:00
tcp_memcontrol.c
memcg: cleanup static keys decrement
2015-02-12 18:54:10 -08:00
tcp_metrics.c
tcp: RFC7413 option support for Fast Open client
2015-04-07 18:36:39 -04:00
tcp_minisocks.c
tcp: provide SYN headers for passive connections
2015-05-05 16:02:34 -04:00
tcp_offload.c
tcp: cleanup static functions
2015-02-28 16:56:51 -05:00
tcp_output.c
tcp: add a force_schedule argument to sk_stream_alloc_skb()
2015-05-21 16:56:40 -04:00
tcp_probe.c
tcp: whitespace fixes
2014-09-01 18:12:45 -07:00
tcp_scalable.c
tcp: stretch ACK fixes prep
2015-01-28 22:18:37 -08:00
tcp_timer.c
tcp: introduce tcp_under_memory_pressure()
2015-05-17 22:45:48 -04:00
tcp_vegas.c
tcp: prepare CC get_info() access from getsockopt()
2015-04-29 17:10:38 -04:00
tcp_vegas.h
tcp: prepare CC get_info() access from getsockopt()
2015-04-29 17:10:38 -04:00
tcp_veno.c
tcp: stretch ACK fixes prep
2015-01-28 22:18:37 -08:00
tcp_westwood.c
tcp_westwood: fix tcp_westwood_info()
2015-04-30 00:27:44 -04:00
tcp_yeah.c
tcp: stretch ACK fixes prep
2015-01-28 22:18:37 -08:00
tcp.c
tcp: add a force_schedule argument to sk_stream_alloc_skb()
2015-05-21 16:56:40 -04:00
tunnel4.c
net: Convert printks to pr_<level>
2012-03-11 23:42:51 -07:00
udp_diag.c
ipv4: coding style: comparison for equality with NULL
2015-04-03 12:11:15 -04:00
udp_impl.h
net: Remove iocb argument from sendmsg and recvmsg
2015-03-02 13:06:31 -05:00
udp_offload.c
ipv4: coding style: comparison for inequality with NULL
2015-04-03 12:11:15 -04:00
udp_tunnel.c
net: Modify sk_alloc to not reference count the netns of kernel sockets.
2015-05-11 10:50:18 -04:00
udp.c
net: remove extra newlines
2015-04-07 22:24:37 -04:00
udplite.c
net: Eliminate no_check from protosw
2014-05-23 16:28:53 -04:00
xfrm4_input.c
netfilter: Pass socket pointer down through okfn().
2015-04-07 15:25:55 -04:00
xfrm4_mode_beet.c
ipv4: ERROR: code indent should use tabs where possible
2013-12-26 13:43:21 -05:00
xfrm4_mode_transport.c
…
xfrm4_mode_tunnel.c
ipv4: hash net ptr into fragmentation bucket selection
2015-03-25 14:07:04 -04:00
xfrm4_output.c
netfilter: Pass socket pointer down through okfn().
2015-04-07 15:25:55 -04:00
xfrm4_policy.c
ipv4: coding style: comparison for equality with NULL
2015-04-03 12:11:15 -04:00
xfrm4_protocol.c
xfrm4: Remove duplicate semicolon
2014-06-30 07:49:47 +02:00
xfrm4_state.c
inet: make no_pmtu_disc per namespace and kill ipv4_config
2013-12-18 16:58:20 -05:00
xfrm4_tunnel.c
sit: add IPv4 over IPv4 support
2013-05-31 17:19:05 -07:00