Merge struct route and struct route_in6.

Use a common struct route for both inet and inet6.  Unfortunately
struct sockaddr is shorter than sockaddr_in6, so netinet/in.h has
to be exposed from net/route.h.  Struct route has to be bsd visible
for userland as netstat kvm code inspects inp_route.  Internet PCB
and TCP SYN cache can use a plain struct route now.  All specific
sockaddr types for inet and inet6 are embeded there.

OK claudio@

1 files changed, 12 insertions, 13 deletions

diff --git a/sys/net/route.c b/sys/net/route.c
index bb9c7b05099..f9915cdf7c1 100644
--- a/sys/net/route.c
+++ b/sys/net/route.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: route.c,v 1.431 2024/02/09 14:02:11 bluhm Exp $	*/
+/*	$OpenBSD: route.c,v 1.432 2024/02/13 12:22:09 bluhm Exp $	*/
 /*	$NetBSD: route.c,v 1.14 1996/02/13 22:00:46 christos Exp $	*/
 
 /*
@@ -212,8 +212,8 @@ route_cache(struct route *ro, struct in_addr addr, u_int rtableid)
 	if (rtisvalid(ro->ro_rt) &&
 	    ro->ro_generation == gen &&
 	    ro->ro_tableid == rtableid &&
-	    ro->ro_dst.sa_family == AF_INET &&
-	    satosin(&ro->ro_dst)->sin_addr.s_addr == addr.s_addr) {
+	    ro->ro_dstsa.sa_family == AF_INET &&
+	    ro->ro_dstsin.sin_addr.s_addr == addr.s_addr) {
 		ipstat_inc(ips_rtcachehit);
 		return (0);
 	}
@@ -225,17 +225,16 @@ route_cache(struct route *ro, struct in_addr addr, u_int rtableid)
 	ro->ro_tableid = rtableid;
 
 	memset(&ro->ro_dst, 0, sizeof(ro->ro_dst));
-	satosin(&ro->ro_dst)->sin_family = AF_INET;
-	satosin(&ro->ro_dst)->sin_len = sizeof(struct sockaddr_in);
-	satosin(&ro->ro_dst)->sin_addr = addr;
+	ro->ro_dstsin.sin_family = AF_INET;
+	ro->ro_dstsin.sin_len = sizeof(struct sockaddr_in);
+	ro->ro_dstsin.sin_addr = addr;
 
 	return (ESRCH);
 }
 
 #ifdef INET6
 int
-route6_cache(struct route_in6 *ro, const struct in6_addr *addr,
-    u_int rtableid)
+route6_cache(struct route *ro, const struct in6_addr *addr, u_int rtableid)
 {
 	u_long gen;
 
@@ -245,8 +244,8 @@ route6_cache(struct route_in6 *ro, const struct in6_addr *addr,
 	if (rtisvalid(ro->ro_rt) &&
 	    ro->ro_generation == gen &&
 	    ro->ro_tableid == rtableid &&
-	    ro->ro_dst.sin6_family == AF_INET6 &&
-	    IN6_ARE_ADDR_EQUAL(&ro->ro_dst.sin6_addr, addr)) {
+	    ro->ro_dstsa.sa_family == AF_INET6 &&
+	    IN6_ARE_ADDR_EQUAL(&ro->ro_dstsin6.sin6_addr, addr)) {
 		ip6stat_inc(ip6s_rtcachehit);
 		return (0);
 	}
@@ -258,9 +257,9 @@ route6_cache(struct route_in6 *ro, const struct in6_addr *addr,
 	ro->ro_tableid = rtableid;
 
 	memset(&ro->ro_dst, 0, sizeof(ro->ro_dst));
-	ro->ro_dst.sin6_family = AF_INET6;
-	ro->ro_dst.sin6_len = sizeof(struct sockaddr_in6);
-	ro->ro_dst.sin6_addr = *addr;
+	ro->ro_dstsin6.sin6_family = AF_INET6;
+	ro->ro_dstsin6.sin6_len = sizeof(struct sockaddr_in6);
+	ro->ro_dstsin6.sin6_addr = *addr;
 
 	return (ESRCH);
 }