Remove unused struct ifnet's *if_afdata[] and struct domain's dom_if{at,de}tach()

Both made obsolete through struct ifnet's previous *if_nd addition.

IPv6 Neighbour Discovery handles per-interface data directly, nothing
else uses this generic domain API anymore.

Outside of _KERNEL, but nothing in base uses them, either.

OK bluhm mvs claudio

3 files changed, 3 insertions, 34 deletions

diff --git a/sys/net/if.c b/sys/net/if.c
index 36ac89ceb46..70f873b447d 100644
--- a/sys/net/if.c
+++ b/sys/net/if.c
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if.c,v 1.681 2022/11/23 14:48:27 kn Exp $	*/
+/*	$OpenBSD: if.c,v 1.682 2022/11/23 14:50:59 kn Exp $	*/
 /*	$NetBSD: if.c,v 1.35 1996/05/07 05:26:04 thorpej Exp $	*/
 
 /*
@@ -133,7 +133,6 @@
 #include <sys/device.h>
 
 void	if_attachsetup(struct ifnet *);
-void	if_attachdomain(struct ifnet *);
 void	if_attach_common(struct ifnet *);
 void	if_remove(struct ifnet *);
 int	if_createrdomain(int, struct ifnet *);
@@ -460,7 +459,6 @@ if_attachsetup(struct ifnet *ifp)
 
 	if_addgroup(ifp, IFG_ALL);
 
-	if_attachdomain(ifp);
 #ifdef INET6
 	ifp->if_nd = nd6_ifattach(ifp);
 #endif
@@ -538,25 +536,6 @@ if_free_sadl(struct ifnet *ifp)
 }
 
 void
-if_attachdomain(struct ifnet *ifp)
-{
-	const struct domain *dp;
-	int i, s;
-
-	s = splnet();
-
-	/* address family dependent data region */
-	bzero(ifp->if_afdata, sizeof(ifp->if_afdata));
-	for (i = 0; (dp = domains[i]) != NULL; i++) {
-		if (dp->dom_ifattach)
-			ifp->if_afdata[dp->dom_family] =
-			    (*dp->dom_ifattach)(ifp);
-	}
-
-	splx(s);
-}
-
-void
 if_attachhead(struct ifnet *ifp)
 {
 	if_attach_common(ifp);
@@ -1058,7 +1037,6 @@ if_detach(struct ifnet *ifp)
 {
 	struct ifaddr *ifa;
 	struct ifg_list *ifg;
-	const struct domain *dp;
 	int i, s;
 
 	/* Undo pseudo-driver changes. */
@@ -1126,11 +1104,6 @@ if_detach(struct ifnet *ifp)
 	KASSERT(TAILQ_EMPTY(&ifp->if_linkstatehooks));
 	KASSERT(TAILQ_EMPTY(&ifp->if_detachhooks));
 
-	for (i = 0; (dp = domains[i]) != NULL; i++) {
-		if (dp->dom_ifdetach && ifp->if_afdata[dp->dom_family])
-			(*dp->dom_ifdetach)(ifp,
-			    ifp->if_afdata[dp->dom_family]);
-	}
 #ifdef INET6
 	nd6_ifdetach(ifp->if_nd);
 #endif
diff --git a/sys/net/if_var.h b/sys/net/if_var.h
index eeb2aa8ba4a..fc7512c0974 100644
--- a/sys/net/if_var.h
+++ b/sys/net/if_var.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: if_var.h,v 1.121 2022/11/23 14:48:27 kn Exp $	*/
+/*	$OpenBSD: if_var.h,v 1.122 2022/11/23 14:50:59 kn Exp $	*/
 /*	$NetBSD: if.h,v 1.23 1996/05/07 02:40:27 thorpej Exp $	*/
 
 /*
@@ -186,7 +186,6 @@ struct ifnet {				/* and the entries */
 
 	struct sockaddr_dl *if_sadl;	/* [N] pointer to our sockaddr_dl */
 
-	void	*if_afdata[AF_MAX];
 	struct	nd_ifinfo *if_nd;	/* [I] IPv6 Neighour Discovery info */
 };
 #define	if_mtu		if_data.ifi_mtu
diff --git a/sys/sys/domain.h b/sys/sys/domain.h
index d8758fb8b9c..478bc193d7a 100644
--- a/sys/sys/domain.h
+++ b/sys/sys/domain.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: domain.h,v 1.22 2021/05/25 22:45:10 bluhm Exp $	*/
+/*	$OpenBSD: domain.h,v 1.23 2022/11/23 14:50:59 kn Exp $	*/
 /*	$NetBSD: domain.h,v 1.10 1996/02/09 18:25:07 christos Exp $	*/
 
 /*
@@ -60,9 +60,6 @@ struct domain {
 	unsigned int	dom_sasize;	/* size of sockaddr structure */
 	unsigned int	dom_rtoffset;	/* offset of the key, in bytes */
 	unsigned int	dom_maxplen;	/* maximum prefix length, in bits */
-	void	*(*dom_ifattach)(struct ifnet *);
-	void	(*dom_ifdetach)(struct ifnet *, void *);
-					/* af-dependent data on ifnet */
 };
 
 #ifdef _KERNEL