Commit b8da518c authored Dec 01, 2017 by William Tu Committed by David S. Miller Dec 04, 2017

bpf: allow disabling tunnel csum for ipv6



Before the patch, BPF_F_ZERO_CSUM_TX can be used only for ipv4 tunnel.
With introduction of ip6gretap collect_md mode, the flag should be also
supported for ipv6.

Signed-off-by: William Tu <u9012063@gmail.com>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 6712abc1

net/core/filter.c

+3 −2

Original line number	Diff line number	Diff line
		@@ -3026,9 +3026,10 @@ BPF_CALL_4(bpf_skb_set_tunnel_key, struct sk_buff *, skb,
		IPV6_FLOWLABEL_MASK;
		} else {
		info->key.u.ipv4.dst = cpu_to_be32(from->remote_ipv4);
		}

		if (flags & BPF_F_ZERO_CSUM_TX)
		info->key.tun_flags &= ~TUNNEL_CSUM;
		}

		return 0;
		}

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