linux/samples
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
..
bpf tc: bpf: add checksum helpers 2015-04-06 16:42:35 -04:00
hidraw
hw_breakpoint
kdb
kfifo
kobject
kprobes
livepatch livepatch: rename config to CONFIG_LIVEPATCH 2015-02-04 11:25:51 +01:00
pktgen samples/pktgen: Show the results rather than just commenting where they are 2015-02-23 22:04:25 -05:00
rpmsg
seccomp samples/seccomp: improve label helper 2015-02-17 14:34:55 -08:00
trace_events tracing: Add samples of DECLARE_EVENT_CLASS() and DEFINE_EVENT() 2015-02-09 18:05:51 -05:00
uhid
Kconfig livepatch: rename config to CONFIG_LIVEPATCH 2015-02-04 11:25:51 +01:00
Makefile livepatch: samples: add sample live patching module 2014-12-22 15:40:49 +01:00