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Alexei Starovoitov 91bc4822c3 tc: bpf: add checksum helpers 
Commit 608cd71a9c ("tc: bpf: generalize pedit action") has added the
possibility to mangle packet data to BPF programs in the tc pipeline.
This patch adds two helpers bpf_l3_csum_replace() and bpf_l4_csum_replace()
for fixing up the protocol checksums after the packet mangling.

It also adds 'flags' argument to bpf_skb_store_bytes() helper to avoid
unnecessary checksum recomputations when BPF programs adjusting l3/l4
checksums and documents all three helpers in uapi header.

Moreover, a sample program is added to show how BPF programs can make use
of the mangle and csum helpers.

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
 		2015-04-06 16:42:35 -04:00
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6lowpan
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9p Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-03-20 18:51:09 -04:00
802
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8021q vlan: implement ndo_get_iflink 2015-04-02 14:05:00 -04:00
appletalk
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atm
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ax25
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batman-adv dev: introduce dev_get_iflink() 2015-04-02 14:04:59 -04:00
bluetooth Bluetooth: Unify advertising data code paths 2015-03-26 03:30:29 +01:00
bridge netfilter: Pass nf_hook_state through nft_set_pktinfo*(). 2015-04-04 12:54:27 -04:00
caif Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-03-20 18:51:09 -04:00
can can: introduce new raw socket option to join the given CAN filters 2015-04-01 11:28:22 +02:00
ceph
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core tc: bpf: add checksum helpers 2015-04-06 16:42:35 -04:00
dcb
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dccp inet: fix double request socket freeing 2015-03-23 21:40:48 -04:00
decnet netfilter: Make nf_hookfn use nf_hook_state. 2015-04-04 12:31:38 -04:00
dns_resolver
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dsa dsa: implement ndo_get_iflink 2015-04-02 14:05:01 -04:00
ethernet
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hsr
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ieee802154
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ipv4 netfilter: Pass nf_hook_state through arpt_do_table(). 2015-04-04 13:26:52 -04:00
ipv6 netfilter: Pass nf_hook_state through nft_set_pktinfo*(). 2015-04-04 12:54:27 -04:00
ipx
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irda
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iucv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-04-02 16:16:53 -04:00
key xfrm: simplify xfrm_address_t use 2015-03-31 13:58:35 -04:00
l2tp netlink: implement nla_get_in_addr and nla_get_in6_addr 2015-03-31 13:58:35 -04:00
lapb
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llc
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mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-04-02 16:16:53 -04:00
mac802154 mac802154: cleanup concurrent check 2015-03-27 19:18:50 +01:00
mpls
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netfilter netfilter: Make nf_hookfn use nf_hook_state. 2015-04-04 12:31:38 -04:00
netlabel netlink: implement nla_put_in_addr and nla_put_in6_addr 2015-03-31 13:58:35 -04:00
netlink rhashtable: provide len to obj_hashfn 2015-03-25 17:18:33 +01:00
netrom
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nfc
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openvswitch Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-04-02 16:16:53 -04:00
packet af_packet: pass checksum validation status to the user 2015-03-23 22:01:28 -04:00
phonet
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rds Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-03-20 18:51:09 -04:00
rfkill
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rose
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rxrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2015-03-20 18:51:09 -04:00
sched pkt_sched: fq: correct spelling of locally 2015-04-01 22:52:29 -04:00
sctp sctp: avoid to repeatedly declare external variables 2015-03-25 11:40:16 -04:00
sunrpc sunrpc: make debugfs file creation failure non-fatal 2015-03-31 14:15:08 -04:00
switchdev switchdev: fix stp update API to work with layered netdevices 2015-03-23 16:44:56 -04:00
tipc tipc: simplify link mtu negotiation 2015-04-02 16:27:12 -04:00
unix
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vmw_vsock
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wimax
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wireless Lots of updates for net-next; along with the usual flurry 2015-03-31 16:39:04 -04:00
x25
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xfrm xfrm: simplify xfrm_address_t use 2015-03-31 13:58:35 -04:00
Kconfig
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Makefile
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compat.c net: socket: add support for async operations 2015-03-23 16:41:36 -04:00
socket.c net: socket: add support for async operations 2015-03-23 16:41:36 -04:00
sysctl_net.c
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