[PATCH 1/6] ndp: Remove redundant update to addr_seen

[David Gibson <david@gibson.dropbear.id.au>]

ndp() updates addr_seen or addr_ll_seen based on the source address of the
received packet.  This is redundant since tap6_handler() has already
updated addr_seen for any type of packet, not just NDP.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
---
 ndp.c | 9 ++-------
 ndp.h | 4 ++--
 2 files changed, 4 insertions(+), 9 deletions(-)

diff --git a/ndp.c b/ndp.c
index faae408..ab80898 100644
--- a/ndp.c
+++ b/ndp.c
@@ -179,8 +179,8 @@ struct ndp_ns {
  *
  * Return: 0 if not handled here, 1 if handled, -1 on failure
  */
-int ndp(struct ctx *c, const struct icmp6hdr *ih, const struct in6_addr *saddr,
-	const struct pool *p)
+int ndp(const struct ctx *c, const struct icmp6hdr *ih,
+	const struct in6_addr *saddr, const struct pool *p)
 {
 	struct ndp_na na = {
 		.ih = {
@@ -336,11 +336,6 @@ dns_done:
 		return 1;
 	}
 
-	if (IN6_IS_ADDR_LINKLOCAL(saddr))
-		c->ip6.addr_ll_seen = *saddr;
-	else
-		c->ip6.addr_seen = *saddr;
-
 	rsaddr = &c->ip6.our_tap_ll;
 
 	if (ih->icmp6_type == NS) {
diff --git a/ndp.h b/ndp.h
index a786441..abe6d02 100644
--- a/ndp.h
+++ b/ndp.h
@@ -6,7 +6,7 @@
 #ifndef NDP_H
 #define NDP_H
 
-int ndp(struct ctx *c, const struct icmp6hdr *ih, const struct in6_addr *saddr,
-	const struct pool *p);
+int ndp(const struct ctx *c, const struct icmp6hdr *ih,
+	const struct in6_addr *saddr, const struct pool *p);
 
 #endif /* NDP_H */
-- 
@@ -6,7 +6,7 @@
 #ifndef NDP_H
 #define NDP_H
 
-int ndp(struct ctx *c, const struct icmp6hdr *ih, const struct in6_addr *saddr,
-	const struct pool *p);
+int ndp(const struct ctx *c, const struct icmp6hdr *ih,
+	const struct in6_addr *saddr, const struct pool *p);
 
 #endif /* NDP_H */
-- 
2.47.0