[RFC PATCH net-next 4/9] flow_dissector: prepare for encapsulated control flags

From: Asbjørn Sloth Tønnesen
Date: Tue Jun 11 2024 - 19:55:00 EST


Rename skb_flow_dissect_set_enc_addr_type() to
skb_flow_dissect_set_enc_control(), and make it set both
addr_type and flags in FLOW_DISSECTOR_KEY_ENC_CONTROL.

Signed-off-by: Asbjørn Sloth Tønnesen <ast@xxxxxxxxxxx>
---
net/core/flow_dissector.c | 21 ++++++++++++---------
1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index 59fe46077b3ca..86a11a01445ad 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -299,9 +299,10 @@ void skb_flow_dissect_meta(const struct sk_buff *skb,
EXPORT_SYMBOL(skb_flow_dissect_meta);

static void
-skb_flow_dissect_set_enc_addr_type(enum flow_dissector_key_id type,
- struct flow_dissector *flow_dissector,
- void *target_container)
+skb_flow_dissect_set_enc_control(enum flow_dissector_key_id type,
+ u32 ctrl_flags,
+ struct flow_dissector *flow_dissector,
+ void *target_container)
{
struct flow_dissector_key_control *ctrl;

@@ -312,6 +313,7 @@ skb_flow_dissect_set_enc_addr_type(enum flow_dissector_key_id type,
FLOW_DISSECTOR_KEY_ENC_CONTROL,
target_container);
ctrl->addr_type = type;
+ ctrl->flags = ctrl_flags;
}

void
@@ -367,6 +369,7 @@ skb_flow_dissect_tunnel_info(const struct sk_buff *skb,
{
struct ip_tunnel_info *info;
struct ip_tunnel_key *key;
+ u32 ctrl_flags = 0;

/* A quick check to see if there might be something to do. */
if (!dissector_uses_key(flow_dissector,
@@ -395,9 +398,9 @@ skb_flow_dissect_tunnel_info(const struct sk_buff *skb,

switch (ip_tunnel_info_af(info)) {
case AF_INET:
- skb_flow_dissect_set_enc_addr_type(FLOW_DISSECTOR_KEY_IPV4_ADDRS,
- flow_dissector,
- target_container);
+ skb_flow_dissect_set_enc_control(FLOW_DISSECTOR_KEY_IPV4_ADDRS,
+ ctrl_flags, flow_dissector,
+ target_container);
if (dissector_uses_key(flow_dissector,
FLOW_DISSECTOR_KEY_ENC_IPV4_ADDRS)) {
struct flow_dissector_key_ipv4_addrs *ipv4;
@@ -410,9 +413,9 @@ skb_flow_dissect_tunnel_info(const struct sk_buff *skb,
}
break;
case AF_INET6:
- skb_flow_dissect_set_enc_addr_type(FLOW_DISSECTOR_KEY_IPV6_ADDRS,
- flow_dissector,
- target_container);
+ skb_flow_dissect_set_enc_control(FLOW_DISSECTOR_KEY_IPV6_ADDRS,
+ ctrl_flags, flow_dissector,
+ target_container);
if (dissector_uses_key(flow_dissector,
FLOW_DISSECTOR_KEY_ENC_IPV6_ADDRS)) {
struct flow_dissector_key_ipv6_addrs *ipv6;
--
2.45.1