[PATCH libnftnl 2/5] sets: add and use incomplete tag

[Florian Westphal <fw@strlen.de>]

Like previous patch:

Extend data and set representation to indicate an incomplete
dissection.

Signed-off-by: Florian Westphal <fw@strlen.de>
---
 include/data_reg.h  | 1 +
 include/set.h       | 1 +
 src/expr/data_reg.c | 6 ++++++
 src/set_elem.c      | 5 +++++
 4 files changed, 13 insertions(+)

diff --git a/include/data_reg.h b/include/data_reg.h
index 946354dc9881..982e7a5bf2ea 100644
--- a/include/data_reg.h
+++ b/include/data_reg.h
@@ -27,6 +27,7 @@ union nftnl_data_reg {
 		const char	*chain;
 		uint32_t	chain_id;
 	};
+	bool incomplete;
 };
 
 int nftnl_data_reg_snprintf(char *buf, size_t size,
diff --git a/include/set.h b/include/set.h
index 55018b6b9ba9..ea84e511f1f9 100644
--- a/include/set.h
+++ b/include/set.h
@@ -34,6 +34,7 @@ struct nftnl_set {
 	uint32_t		gc_interval;
 	uint64_t		timeout;
 	struct list_head	expr_list;
+	bool			incomplete;
 };
 
 struct nftnl_set_list;
diff --git a/src/expr/data_reg.c b/src/expr/data_reg.c
index 149d52aea9b4..dbd7b3660c13 100644
--- a/src/expr/data_reg.c
+++ b/src/expr/data_reg.c
@@ -135,6 +135,9 @@ nftnl_parse_verdict(union nftnl_data_reg *data, const struct nlattr *attr, int *
 	if (!tb[NFTA_VERDICT_CODE])
 		return -1;
 
+	if (tb[NFTA_VERDICT_UNSPEC])
+		data->incomplete = true;
+
 	data->verdict = ntohl(mnl_attr_get_u32(tb[NFTA_VERDICT_CODE]));
 
 	switch(data->verdict) {
@@ -193,6 +196,9 @@ int nftnl_parse_data(union nftnl_data_reg *data, struct nlattr *attr, int *type)
 	if (mnl_attr_parse_nested(attr, nftnl_data_parse_cb, tb) < 0)
 		return -1;
 
+	if (tb[NFTA_DATA_UNSPEC])
+		data->incomplete = true;
+
 	if (tb[NFTA_DATA_VALUE]) {
 		if (type)
 			*type = DATA_VALUE;
diff --git a/src/set_elem.c b/src/set_elem.c
index 9207a0dbd689..3531c0767e16 100644
--- a/src/set_elem.c
+++ b/src/set_elem.c
@@ -589,6 +589,11 @@ static int nftnl_set_elems_parse2(struct nftnl_set *s, const struct nlattr *nest
 		e->flags |= (1 << NFTNL_SET_ELEM_OBJREF);
 	}
 
+	if (!s->incomplete)
+		s->incomplete = e->key.incomplete ||
+				e->key_end.incomplete ||
+				e->data.incomplete;
+
 	/* Add this new element to this set */
 	list_add_tail(&e->head, &s->element_list);
 
-- 
2.45.2