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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>
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1 changed files with 3 additions and 2 deletions
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@ -3026,10 +3026,11 @@ BPF_CALL_4(bpf_skb_set_tunnel_key, struct sk_buff *, skb,
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IPV6_FLOWLABEL_MASK;
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} else {
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info->key.u.ipv4.dst = cpu_to_be32(from->remote_ipv4);
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if (flags & BPF_F_ZERO_CSUM_TX)
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info->key.tun_flags &= ~TUNNEL_CSUM;
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}
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if (flags & BPF_F_ZERO_CSUM_TX)
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info->key.tun_flags &= ~TUNNEL_CSUM;
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return 0;
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}
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