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| author | Alexei Starovoitov <ast@plumgrid.com> | 2015-04-02 03:12:13 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-04-06 23:42:35 +0300 |
| commit | 91bc4822c3d61b9bb7ef66d3b77948a4f9177954 (patch) | |
| tree | ca92a811b501957c1e876290d305aaf81c8d9aff /samples/bpf/Makefile | |
| parent | 5888b93b750609680735d6b8b737703083ef40ff (diff) | |
| download | linux-91bc4822c3d61b9bb7ef66d3b77948a4f9177954.tar.xz | |
tc: bpf: add checksum helpers
Commit 608cd71a9c7c ("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>
Diffstat (limited to 'samples/bpf/Makefile')
| -rw-r--r-- | samples/bpf/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/samples/bpf/Makefile b/samples/bpf/Makefile index b5b3600dcdf5..d24f51bca465 100644 --- a/samples/bpf/Makefile +++ b/samples/bpf/Makefile @@ -17,6 +17,7 @@ sockex2-objs := bpf_load.o libbpf.o sockex2_user.o always := $(hostprogs-y) always += sockex1_kern.o always += sockex2_kern.o +always += tcbpf1_kern.o HOSTCFLAGS += -I$(objtree)/usr/include |