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6ae23ad362
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Tom Herbert 6ae23ad362 net: Add driver helper functions to determine checksum offloadability 
Add skb_csum_offload_chk driver helper function to determine if a
device with limited checksum offload capabilities is able to offload the
checksum for a given packet.

This patch includes:
  - The skb_csum_offload_chk function. Returns true if checksum is
    offloadable, else false. Optionally, in the case that the checksum
    is not offloable, the function can call skb_checksum_help to resolve
    the checksum. skb_csum_offload_chk also returns whether the checksum
    refers to an encapsulated checksum.
  - Definition of skb_csum_offl_spec structure that caller uses to
    indicate rules about what it can offload (e.g. IPv4/v6, TCP/UDP only,
    whether encapsulated checksums can be offloaded, whether checksum with
    IPv6 extension headers can be offloaded).
  - Ancilary functions called skb_csum_offload_chk_help,
    skb_csum_off_chk_help_cmn, skb_csum_off_chk_help_cmn_v4_only.

Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-12-15 16:50:21 -05:00
..
6lowpan 6lowpan: add debugfs support 2015-12-10 01:25:25 +01:00
9p IB/cma: Add support for network namespaces 2015-10-28 12:32:48 -04:00
802
8021q net: Rename NETIF_F_ALL_CSUM to NETIF_F_CSUM_MASK 2015-12-15 16:50:08 -05:00
appletalk
atm net: Generalise wq_has_sleeper helper 2015-11-30 14:47:33 -05:00
ax25
batman-adv batman-adv: Act on NETDEV_*_TYPE_CHANGE events 2015-12-05 17:41:42 -05:00
bluetooth Bluetooth: Do not filter multicast addresses by default 2015-12-11 10:46:16 +01:00
bridge switchdev: Pass original device to port netdev driver 2015-12-15 11:58:20 -05:00
caif net: rename SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA 2015-12-01 15:45:05 -05:00
can can: avoid using timeval for uapi 2015-10-13 17:42:34 +02:00
ceph Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client 2015-11-13 09:24:40 -08:00
core net: Add driver helper functions to determine checksum offloadability 2015-12-15 16:50:21 -05:00
dcb net/dcb: make dcbnl.c explicitly non-modular 2015-10-09 07:52:27 -07:00
dccp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-12-03 21:09:12 -05:00
decnet net: rename SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA 2015-12-01 15:45:05 -05:00
dns_resolver net: dns_resolver: convert time_t to time64_t 2015-11-18 16:27:46 -05:00
dsa net: dsa: move dsa slave destroy code to slave.c 2015-12-07 16:35:50 -05:00
ethernet net: help compiler generate better code in eth_get_headlen 2015-09-28 22:51:15 -07:00
hsr net/hsr: fix a warning message 2015-11-23 14:56:15 -05:00
ieee802154 6lowpan: add lowpan dev register helpers 2015-12-10 01:25:25 +01:00
ipv4 tcp: Fix conditions to determine checksum offload 2015-12-15 16:50:20 -05:00
ipv6 net: Eliminate NETIF_F_GEN_CSUM and NETIF_F_V[46]_CSUM 2015-12-15 16:50:20 -05:00
ipx
irda TTY/Serial driver patches for 4.4-rc1 2015-11-04 21:35:12 -08:00
iucv iucv: call skb_linearize() when needed 2015-12-14 16:16:44 -05:00
key af_key: fix two typos 2015-10-23 03:05:19 -07:00
l2tp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-12-03 21:09:12 -05:00
l3mdev net: Add netif_is_l3_slave 2015-10-07 04:27:43 -07:00
lapb
llc tcp: fix recv with flags MSG_WAITALL | MSG_PEEK 2015-07-27 01:06:53 -07:00
mac80211 mac80211: handle HW ROC expired properly 2015-12-07 11:06:37 +01:00
mac802154 mac802154: tx: fix synced xmit deadlock 2015-12-10 19:17:11 +01:00
mpls mpls_iptunnel: add static qualifier to mpls_output 2015-12-11 20:17:43 -05:00
netfilter sctp: Rename NETIF_F_SCTP_CSUM to NETIF_F_SCTP_CRC 2015-12-15 16:49:58 -05:00
netlabel
netlink mm, page_alloc: distinguish between being unable to sleep, unwilling to sleep and avoiding waking kswapd 2015-11-06 17:50:42 -08:00
netrom
nfc net: rename SOCK_ASYNC_NOSPACE and SOCK_ASYNC_WAITDATA 2015-12-01 15:45:05 -05:00
openvswitch Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-12-03 21:09:12 -05:00
packet packet: Allow packets with only a header (but no payload) 2015-11-29 22:17:17 -05:00
phonet
rds RDS: fix race condition when sending a message on unbound socket 2015-11-24 17:20:09 -05:00
rfkill rfkill: Copy "all" global state to other types 2015-09-04 14:26:56 +02:00
rose
rxrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-12-03 21:09:12 -05:00
sched net_sched: fix qdisc_tree_decrease_qlen() races 2015-12-03 14:59:05 -05:00
sctp sctp: Rename NETIF_F_SCTP_CSUM to NETIF_F_SCTP_CRC 2015-12-15 16:49:58 -05:00
sunrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-12-03 16:02:46 -08:00
switchdev switchdev: Pass original device to port netdev driver 2015-12-15 11:58:20 -05:00
tipc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-12-03 21:09:12 -05:00
unix af_unix: fix unix_dgram_recvmsg entry locking 2015-12-06 23:31:54 -05:00
vmw_vsock Revert "Merge branch 'vsock-virtio'" 2015-12-08 21:55:49 -05:00
wimax net:wimax: Fix doucble word "the the" in networking.xml 2015-08-09 22:43:52 -07:00
wireless cfg80211: reg: Refactor calculation of bandwidth flags 2015-12-04 14:43:32 +01:00
x25
xfrm Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2015-10-30 20:51:56 +09:00
compat.c
Kconfig net: wrap sock->sk_cgrp_prioidx and ->sk_classid inside a struct 2015-12-08 22:02:33 -05:00
Makefile net: Introduce L3 Master device abstraction 2015-09-29 20:40:32 -07:00
socket.c net: fix sock_wake_async() rcu protection 2015-12-01 15:45:05 -05:00
sysctl_net.c net: sysctl: fix a kmemleak warning 2015-10-23 06:22:08 -07:00