]> git.proxmox.com Git - mirror_ubuntu-eoan-kernel.git/commit
bpf: Fix IPv6 dport byte-order in bpf_sk_lookup
authorJoe Stringer <joe@wand.net.nz>
Mon, 15 Oct 2018 17:27:46 +0000 (10:27 -0700)
committerAlexei Starovoitov <ast@kernel.org>
Mon, 15 Oct 2018 23:08:39 +0000 (16:08 -0700)
commit5ef0ae84f02a4dbe0e09f89c6481ac13649cb19b
treec2c999f53cdc4e8cb346d825b2d64af9a4056dea
parent8a615c6b0352a9ec56151b6c95d68e0a2eef5cf0
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 <joe@wand.net.nz>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
net/core/filter.c