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linux-stable/net
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Willem de Bruijn 908adce646 bpf: in bpf_skb_adjust_room avoid copy in tx fast path 
bpf_skb_adjust_room calls skb_cow on grow.

This expensive operation can be avoided in the fast path when the only
other clone has released the header. This is the common case for TCP,
where one headerless clone is kept on the retransmit queue.

It is safe to do so even when touching the gso fields in skb_shinfo.
Regular tunnel encap with iptunnel_handle_offloads takes the same
optimization.

The tcp stack unclones in the unlikely case that it accesses these
fields through headerless clones packets on the retransmit queue (see
__tcp_retransmit_skb).

If any other clones are present, e.g., from packet sockets,
skb_cow_head returns the same value as skb_cow().

Signed-off-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
 		2019-03-22 13:52:44 -07:00
..
6lowpan 6lowpan: fix debugfs_simple_attr.cocci warnings 2019-01-22 09:51:19 +01:00
9p 9p/net: put a lower bound on msize 2018-12-25 17:07:49 +09:00
802
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8021q net: Remove switchdev.h inclusion from team/bond/vlan 2019-02-24 17:40:46 -08:00
appletalk appletalk: Fix potential NULL pointer dereference in unregister_snap_client 2019-03-15 11:25:48 -07:00
atm net: atm: Add another IS_ENABLED(CONFIG_COMPAT) in atm_dev_ioctl 2019-03-07 10:14:50 -08:00
ax25 ax25: fix possible use-after-free 2019-01-23 11:18:00 -08:00
batman-adv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-02-15 12:38:38 -08:00
bluetooth Bluetooth: Add quirk for reading BD_ADDR from fwnode property 2019-02-26 10:08:26 +01:00
bpf bpf: fix warning about using plain integer as NULL 2019-03-08 21:17:07 +01:00
bpfilter bpfilter: re-add header search paths to tools include to fix build error 2019-02-23 13:34:40 -08:00
bridge net: bridge: use eth_broadcast_addr() to assign broadcast address 2019-03-20 11:02:47 -07:00
caif net: caif: use skb helpers instead of open-coding them 2019-02-17 11:01:17 -08:00
can can: bcm: check timer values before ktime conversion 2019-01-22 11:33:46 +01:00
ceph libceph: use struct_size() for kmalloc() in crush_decode() 2019-03-05 18:55:17 +01:00
core bpf: in bpf_skb_adjust_room avoid copy in tx fast path 2019-03-22 13:52:44 -07:00
dcb
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dccp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-02-08 15:00:17 -08:00
decnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-01-29 21:18:54 -08:00
dns_resolver
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dsa net: dsa: Use prepare/commit phase in dsa_slave_vlan_rx_add_vid() 2019-03-03 20:45:52 -08:00
ethernet net/ethernet: Add parse_protocol header_ops support 2019-02-22 12:55:31 -08:00
hsr net/hsr: fix possible crash in add_timer() 2019-03-07 11:02:08 -08:00
ieee802154 net: remove unused struct inet_frag_queue.fragments field 2019-02-26 08:27:05 -08:00
ife
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ipv4 tcp: free request sock directly upon TFO or syncookies error 2019-03-19 14:13:01 -07:00
ipv6 ipv6: Add icmp_echo_ignore_multicast support for ICMPv6 2019-03-19 14:29:51 -07:00
iucv
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kcm kcm: Remove unnecessary SLAB_PANIC for kmem_cache_create() in kcm_init 2019-02-23 13:46:24 -08:00
key af_key: unconditionally clone on broadcast 2019-02-12 10:36:42 +01:00
l2tp l2tp: fix infoleak in l2tp_ip6_recvmsg() 2019-03-13 14:19:35 -07:00
l3mdev l3mdev: add function to retreive upper master 2018-12-03 14:15:26 -08:00
lapb
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llc
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mac80211 net: remove 'fallback' argument from dev->ndo_select_queue() 2019-03-20 11:18:55 -07:00
mac802154
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mpls Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2019-03-02 12:54:35 -08:00
ncsi net: ncsi: fix a missing check for nla_nest_start 2019-03-16 11:44:33 -07:00
netfilter netfilter: nf_tables: return immediately on empty commit 2019-03-11 20:01:20 +01:00
netlabel netlabel: fix out-of-bounds memory accesses 2019-02-27 21:45:24 -08:00
netlink rhashtable: Remove obsolete rhashtable_walk_init function 2019-02-22 13:49:00 +01:00
netrom netrom: switch to sock timer API 2019-01-27 10:38:04 -08:00
nfc net: nfc: Fix NULL dereference on nfc_llcp_build_tlv fails 2019-02-27 12:47:08 -08:00
nsh
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openvswitch net: openvswitch: fix missing checks for nla_nest_start 2019-03-16 11:43:14 -07:00
packet net: remove 'fallback' argument from dev->ndo_select_queue() 2019-03-20 11:18:55 -07:00
phonet phonet: fix building with clang 2019-02-21 16:23:56 -08:00
psample
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qrtr mm: replace all open encodings for NUMA_NO_NODE 2019-03-05 21:07:14 -08:00
rds 5.1 Merge Window Pull Request 2019-03-09 15:53:03 -08:00
rfkill rfkill: gpio: Remove unused include 2018-12-18 13:13:56 +01:00
rose net: rose: fix a possible stack overflow 2019-03-18 16:53:22 -07:00
rxrpc rxrpc: Fix client call queueing, waiting for channel 2019-03-08 18:24:53 -08:00
sched sch_cake: Interpret fwmark parameter as a bitmask 2019-03-15 11:57:14 -07:00
sctp sctp: fix ignoring asoc_id for tcp-style sockets on SCTP_STREAM_SCHEDULER sockopt 2019-03-18 18:31:09 -07:00
smc Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-03-12 13:27:20 -07:00
strparser net: strparser: fix a missing check for create_singlethread_workqueue 2019-03-15 12:51:56 -07:00
sunrpc Miscellaneous NFS server fixes. Probably the most visible bug is one 2019-03-12 15:06:54 -07:00
switchdev switchdev: Remove unused transaction item queue 2019-03-01 21:35:19 -08:00
tipc tipc: smooth change between replicast and broadcast 2019-03-19 13:56:17 -07:00
tls net/tls: Add support of AES128-CCM based ciphers 2019-03-20 11:02:05 -07:00
unix io_uring-2019-03-06 2019-03-08 14:48:40 -08:00
vmw_vsock vsock/virtio: fix kernel panic from virtio_transport_reset_no_sock 2019-03-08 15:15:44 -08:00
wimax
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wireless Merge remote-tracking branch 'net-next/master' into mac80211-next 2019-02-22 13:48:13 +01:00
x25 net/x25: reset state in x25_connect() 2019-03-11 15:40:14 -07:00
xdp xsk: fix umem memory leak on cleanup 2019-03-16 01:27:51 +01:00
xfrm net: dev: rename queue selection helpers. 2019-03-20 11:18:54 -07:00
Kconfig net: devlink: turn devlink into a built-in 2019-02-26 08:49:05 -08:00
Makefile net: split out functions related to registering inflight socket files 2019-02-28 08:24:23 -07:00
compat.c Merge branch 'timers-2038-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2019-03-05 14:08:26 -08:00
socket.c net: add documentation to socket.c 2019-03-15 15:29:47 -07:00
sysctl_net.c
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