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| author | Ariel Levkovich <lariel@mellanox.com> | 2020-07-23 00:03:00 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2020-07-25 00:23:31 +0200 |
| commit | 0cb09aff9d49d92305c3969fc84b785117412968 (patch) | |
| tree | 9073045e0a3fcf34e12feb1957d4ddfbb47db4bf /net/core | |
| parent | net: hyperv: dump TX indirection table to ethtool regs (diff) | |
| download | linux-0cb09aff9d49d92305c3969fc84b785117412968.tar.xz linux-0cb09aff9d49d92305c3969fc84b785117412968.zip | |
net/flow_dissector: add packet hash dissection
Retreive a hash value from the SKB and store it
in the dissector key for future matching.
Signed-off-by: Ariel Levkovich <lariel@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core')
| -rw-r--r-- | net/core/flow_dissector.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c index 142a8824f0a8..29806eb765cf 100644 --- a/net/core/flow_dissector.c +++ b/net/core/flow_dissector.c @@ -383,6 +383,23 @@ skb_flow_dissect_tunnel_info(const struct sk_buff *skb, } EXPORT_SYMBOL(skb_flow_dissect_tunnel_info); +void skb_flow_dissect_hash(const struct sk_buff *skb, + struct flow_dissector *flow_dissector, + void *target_container) +{ + struct flow_dissector_key_hash *key; + + if (!dissector_uses_key(flow_dissector, FLOW_DISSECTOR_KEY_HASH)) + return; + + key = skb_flow_dissector_target(flow_dissector, + FLOW_DISSECTOR_KEY_HASH, + target_container); + + key->hash = skb_get_hash_raw(skb); +} +EXPORT_SYMBOL(skb_flow_dissect_hash); + static enum flow_dissect_ret __skb_flow_dissect_mpls(const struct sk_buff *skb, struct flow_dissector *flow_dissector, |