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authorJoe Stringer <[email protected]>2018-10-15 17:27:46 +0000
committerAlexei Starovoitov <[email protected]>2018-10-15 23:08:39 +0000
commit5ef0ae84f02a4dbe0e09f89c6481ac13649cb19b (patch)
treec2c999f53cdc4e8cb346d825b2d64af9a4056dea /tools/bpf/bpftool/prog.c
parentbpf: Allow sk_lookup with IPv6 module (diff)
downloadkernel-5ef0ae84f02a4dbe0e09f89c6481ac13649cb19b.tar.gz
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bpf: Fix IPv6 dport byte-order in bpf_sk_lookup
Commit 6acc9b432e67 ("bpf: Add helper to retrieve socket in BPF") mistakenly passed the destination port in network byte-order to the IPv6 TCP/UDP socket lookup functions, which meant that BPF writers would need to either manually swap the byte-order of this field or otherwise IPv6 sockets could not be located via this helper. Fix the issue by swapping the byte-order appropriately in the helper. This also makes the API more consistent with the IPv4 version. Fixes: 6acc9b432e67 ("bpf: Add helper to retrieve socket in BPF") Signed-off-by: Joe Stringer <[email protected]> Signed-off-by: Alexei Starovoitov <[email protected]>
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