This will be used in an upcoming commit.
---
lib/flow.c | 26 ++++++++++++++++++++++++++
lib/flow.h | 1 +
2 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/lib/flow.c b/lib/flow.c
index 66cc223..e41aec0 100644
--- a/lib/flow.c
+++ b/lib/flow.c
@@ -625,6 +625,32 @@ flow_wildcards_is_exact(const struct flow_wildcards *wc)
return true;
}
+/* Returns true if 'wc' matches every packet, false if 'wc' fixes any bits or
+ * fields. */
+bool
+flow_wildcards_is_catchall(const struct flow_wildcards *wc)
+{
+ int i;
+
+ if (wc->wildcards != FWW_ALL
+ || wc->tun_id_mask != htonll(0)
+ || wc->nw_src_mask != htonl(0)
+ || wc->nw_dst_mask != htonl(0)
+ || wc->vlan_tci_mask != htons(0)
+ || !ipv6_mask_is_any(&wc->ipv6_src_mask)
+ || !ipv6_mask_is_any(&wc->ipv6_dst_mask)) {
+ return false;
+ }
+
+ for (i = 0; i < FLOW_N_REGS; i++) {
+ if (wc->reg_masks[i] != 0) {
+ return false;
+ }
+ }
+
+ return true;
+}
+
/* Initializes 'dst' as the combination of wildcards in 'src1' and 'src2'.
* That is, a bit or a field is wildcarded in 'dst' if it is wildcarded in
* 'src1' or 'src2' or both. */
diff --git a/lib/flow.h b/lib/flow.h
index e7b49a8..6212f84 100644
--- a/lib/flow.h
+++ b/lib/flow.h
@@ -164,6 +164,7 @@ void flow_wildcards_init_catchall(struct flow_wildcards *);
void flow_wildcards_init_exact(struct flow_wildcards *);
bool flow_wildcards_is_exact(const struct flow_wildcards *);
+bool flow_wildcards_is_catchall(const struct flow_wildcards *);
bool flow_wildcards_set_nw_src_mask(struct flow_wildcards *, ovs_be32);
bool flow_wildcards_set_nw_dst_mask(struct flow_wildcards *, ovs_be32);
--
1.7.4.4
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