icmp6-util: several cleanups for icmp6_receive()

- Rename the argument for storing the sender address,
- allow to call it with NULL for ret_xyz,
- reduce needless copy of timestamp when the message does not have
  timestamp.

1 files changed, 6 insertions, 2 deletions

diff --git a/src/libsystemd-network/icmp6-util.h b/src/libsystemd-network/icmp6-util.h
index f7ad26b5e6..0a9ecb4c44 100644
--- a/src/libsystemd-network/icmp6-util.h
+++ b/src/libsystemd-network/icmp6-util.h
@@ -20,5 +20,9 @@
 int icmp6_bind_router_solicitation(int ifindex);
 int icmp6_bind_router_advertisement(int ifindex);
 int icmp6_send_router_solicitation(int s, const struct ether_addr *ether_addr);
-int icmp6_receive(int fd, void *buffer, size_t size, struct in6_addr *ret_dst,
-                  triple_timestamp *ret_timestamp);
+int icmp6_receive(
+                int fd,
+                void *buffer,
+                size_t size,
+                struct in6_addr *ret_sender,
+                triple_timestamp *ret_timestamp);