diff options
| author | Davide Caratti <dcaratti@redhat.com> | 2024-05-30 19:08:34 +0200 |
|---|---|---|
| committer | Paolo Abeni <pabeni@redhat.com> | 2024-06-04 11:16:38 +0200 |
| commit | 668b6a2ef832a878494cc1b12a881c8ec0494b25 (patch) | |
| tree | 951e6848215c70fc3352442acdb13bf8997423f9 /net/core/flow_dissector.c | |
| parent | 4fdb6b6063f07d959a1c52a2ee580afc4da34e2d (diff) | |
flow_dissector: add support for tunnel control flags
Dissect [no]csum, [no]dontfrag, [no]oam, [no]crit flags from skb metadata.
This is a prerequisite for matching these control flags using TC flower.
Suggested-by: Ilya Maximets <i.maximets@ovn.org>
Signed-off-by: Davide Caratti <dcaratti@redhat.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'net/core/flow_dissector.c')
| -rw-r--r-- | net/core/flow_dissector.c | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c index f82e9a7d3b37..59fe46077b3c 100644 --- a/net/core/flow_dissector.c +++ b/net/core/flow_dissector.c @@ -382,7 +382,9 @@ skb_flow_dissect_tunnel_info(const struct sk_buff *skb, !dissector_uses_key(flow_dissector, FLOW_DISSECTOR_KEY_ENC_IP) && !dissector_uses_key(flow_dissector, - FLOW_DISSECTOR_KEY_ENC_OPTS)) + FLOW_DISSECTOR_KEY_ENC_OPTS) && + !dissector_uses_key(flow_dissector, + FLOW_DISSECTOR_KEY_ENC_FLAGS)) return; info = skb_tunnel_info(skb); @@ -475,6 +477,18 @@ skb_flow_dissect_tunnel_info(const struct sk_buff *skb, IP_TUNNEL_GENEVE_OPT_BIT); enc_opt->dst_opt_type = val < __IP_TUNNEL_FLAG_NUM ? val : 0; } + + if (dissector_uses_key(flow_dissector, FLOW_DISSECTOR_KEY_ENC_FLAGS)) { + struct flow_dissector_key_enc_flags *enc_flags; + IP_TUNNEL_DECLARE_FLAGS(flags) = {}; + + enc_flags = skb_flow_dissector_target(flow_dissector, + FLOW_DISSECTOR_KEY_ENC_FLAGS, + target_container); + ip_tunnel_set_encflags_present(flags); + ip_tunnel_flags_and(flags, flags, info->key.tun_flags); + enc_flags->flags = bitmap_read(flags, IP_TUNNEL_CSUM_BIT, 32); + } } EXPORT_SYMBOL(skb_flow_dissect_tunnel_info); |