2024-06-11 23:55:25

by Asbjørn Sloth Tønnesen

[permalink] [raw]
Subject: [RFC PATCH net-next 5/9] flow_dissector: set encapsulated control flags from tun_flags

Set the new FLOW_DIS_F_TUNNEL_* encapsulated control flags, based
on if their counter-part is set in tun_flags.

These flags are not userspace visible yet, as the code to dump
encapsulated control flags will first be added, and later activated
in the following patches.

Signed-off-by: Asbjørn Sloth Tønnesen <[email protected]>
---
net/core/flow_dissector.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index 86a11a01445ad..6e9bd4cecab66 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -396,6 +396,15 @@ skb_flow_dissect_tunnel_info(const struct sk_buff *skb,

key = &info->key;

+ if (test_bit(IP_TUNNEL_CSUM_BIT, key->tun_flags))
+ ctrl_flags |= FLOW_DIS_F_TUNNEL_CSUM;
+ if (test_bit(IP_TUNNEL_DONT_FRAGMENT_BIT, key->tun_flags))
+ ctrl_flags |= FLOW_DIS_F_TUNNEL_DONT_FRAGMENT;
+ if (test_bit(IP_TUNNEL_OAM_BIT, key->tun_flags))
+ ctrl_flags |= FLOW_DIS_F_TUNNEL_OAM;
+ if (test_bit(IP_TUNNEL_CRIT_OPT_BIT, key->tun_flags))
+ ctrl_flags |= FLOW_DIS_F_TUNNEL_CRIT_OPT;
+
switch (ip_tunnel_info_af(info)) {
case AF_INET:
skb_flow_dissect_set_enc_control(FLOW_DISSECTOR_KEY_IPV4_ADDRS,
--
2.45.1