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| author | Tom Herbert <tom@herbertland.com> | 2015-09-01 16:24:30 (GMT) |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-09-01 22:06:23 (GMT) |
| commit | 8306b688f1a6621b9efe3b0d827e26750528b12a (patch) | |
| tree | 81725f39b3e3905ec73e817ccdeeda187a298325 /net/core | |
| parent | b840f28b908da0239c8c5d9c8cae362ad21cda97 (diff) | |
| download | linux-8306b688f1a6621b9efe3b0d827e26750528b12a.tar.xz | |
flow_dissector: Add flag to stop parsing at L3
Add an input flag to flow dissector on rather dissection should be
stopped when an L3 packet is encountered. This would be useful if a
caller just wanted to get IP addresses of the outermost header (e.g.
to do an L3 hash).
Signed-off-by: Tom Herbert <tom@herbertland.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/flow_dissector.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c index 907de2f..94fd841 100644 --- a/net/core/flow_dissector.c +++ b/net/core/flow_dissector.c @@ -200,6 +200,9 @@ ip: } } + if (flags & FLOW_DISSECTOR_F_STOP_AT_L3) + goto out_good; + break; } case htons(ETH_P_IPV6): { @@ -238,6 +241,9 @@ ipv6: } } + if (flags & FLOW_DISSECTOR_F_STOP_AT_L3) + goto out_good; + break; } case htons(ETH_P_8021AD): |