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| author | Tom Herbert <therbert@google.com> | 2014-11-04 09:06:56 -0800 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-11-05 16:30:03 -0500 |
| commit | b17f709a24013fcbb257f6f89b4d81ac9fdf0d18 (patch) | |
| tree | 2d279bf83c7bdbe770a90f784b6c3e2b78e7237d /include/net/fou.h | |
| parent | c1aa8347e73e4092411fbd96cc59531fb7e76d04 (diff) | |
| download | lwn-b17f709a24013fcbb257f6f89b4d81ac9fdf0d18.tar.gz lwn-b17f709a24013fcbb257f6f89b4d81ac9fdf0d18.zip | |
gue: TX support for using remote checksum offload option
Add if_tunnel flag TUNNEL_ENCAP_FLAG_REMCSUM to configure
remote checksum offload on an IP tunnel. Add logic in gue_build_header
to insert remote checksum offload option.
Signed-off-by: Tom Herbert <therbert@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/fou.h')
| -rw-r--r-- | include/net/fou.h | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/include/net/fou.h b/include/net/fou.h index cf4ce8874f92..25b26ffcf1df 100644 --- a/include/net/fou.h +++ b/include/net/fou.h @@ -20,7 +20,19 @@ static size_t fou_encap_hlen(struct ip_tunnel_encap *e) static size_t gue_encap_hlen(struct ip_tunnel_encap *e) { - return sizeof(struct udphdr) + sizeof(struct guehdr); + size_t len; + bool need_priv = false; + + len = sizeof(struct udphdr) + sizeof(struct guehdr); + + if (e->flags & TUNNEL_ENCAP_FLAG_REMCSUM) { + len += GUE_PLEN_REMCSUM; + need_priv = true; + } + + len += need_priv ? GUE_LEN_PRIV : 0; + + return len; } #endif |