ct keys can match on network and tranasport header protocol
elements, such as port numbers or ip addresses.
Store this base type so a followup commit can store and kill
dependencies, e.g. if bsae is network header we might be able
to kill an earlier expression because the dependency is implicit.
Signed-off-by: Florian Westphal <fw@xxxxxxxxx>
---
include/expression.h | 1 +
src/ct.c | 13 +++++++++++++
2 files changed, 14 insertions(+)
diff --git a/include/expression.h b/include/expression.h
index 90caaf51c36a..5b34d13d8527 100644
--- a/include/expression.h
+++ b/include/expression.h
@@ -300,6 +300,7 @@ struct expr {
struct {
/* EXPR_CT */
enum nft_ct_keys key;
+ enum proto_bases base;
int8_t direction;
uint8_t nfproto;
} ct;
diff --git a/src/ct.c b/src/ct.c
index 2b2578732066..99e4430bf173 100644
--- a/src/ct.c
+++ b/src/ct.c
@@ -347,8 +347,21 @@ struct expr *ct_expr_alloc(const struct location *loc, enum nft_ct_keys key,
expr->ct.nfproto = nfproto;
switch (key) {
+ case NFT_CT_SRC:
+ case NFT_CT_DST:
+ expr->ct.base = PROTO_BASE_NETWORK_HDR;
+ break;
+ case NFT_CT_PROTO_SRC:
+ case NFT_CT_PROTO_DST:
+ expr->ct.base = PROTO_BASE_TRANSPORT_HDR;
+ break;
case NFT_CT_PROTOCOL:
expr->flags = EXPR_F_PROTOCOL;
+ expr->ct.base = PROTO_BASE_NETWORK_HDR;
+ break;
+ case NFT_CT_L3PROTOCOL:
+ expr->flags = EXPR_F_PROTOCOL;
+ expr->ct.base = PROTO_BASE_LL_HDR;
break;
default:
break;
--
2.13.5
--
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