X-Git-Url: https://git.subgeniuskitty.com/unix-history/.git/blobdiff_plain/8af3ca7cbf958446bd2336f89b1b5320bebb20fe..0b33b6b5cfae94a2537efa3d6777c55c11955bf1:/usr/src/sys/net/if.c

diff --git a/usr/src/sys/net/if.c b/usr/src/sys/net/if.c
index 7c548bdec8..947edfe151 100644
--- a/usr/src/sys/net/if.c
+++ b/usr/src/sys/net/if.c
@@ -1,9 +1,15 @@
-/*	if.c	4.23	82/10/31	*/
+/*	if.c	6.2	83/09/27	*/
 
 #include "../h/param.h"
 #include "../h/systm.h"
 #include "../h/socket.h"
 #include "../h/protosw.h"
+#include "../h/dir.h"
+#include "../h/user.h"
+#include "../h/kernel.h"
+#include "../h/ioctl.h"
+#include "../h/errno.h"
+
 #include "../net/if.h"
 #include "../net/af.h"
 
@@ -30,7 +36,7 @@ ifinit()
 	if_slowtimo();
 }
 
-#if vax
+#ifdef vax
 /*
  * Call each interface on a Unibus reset.
  */
@@ -41,7 +47,7 @@ ifubareset(uban)
 
 	for (ifp = ifnet; ifp; ifp = ifp->if_next)
 		if (ifp->if_reset)
-			(*ifp->if_reset)(uban);
+			(*ifp->if_reset)(ifp->if_unit, uban);
 }
 #endif
 
@@ -140,6 +146,7 @@ if_ifwithaf(af)
 /*
  * Mark an interface down and notify protocols of
  * the transition.
+ * NOTE: must be called at splnet or eqivalent.
  */
 if_down(ifp)
 	register struct ifnet *ifp;
@@ -158,14 +165,131 @@ if_slowtimo()
 {
 	register struct ifnet *ifp;
 
-	for (ifp = ifnet; ifp; ifp = ifp->if_next)
-		if (ifp->if_timer && --ifp->if_timer == 0) {
-			if (ifp->if_watchdog == 0) {
-				printf("%s%d: no watchdog routine\n", 
-					ifp->if_name, ifp->if_unit);
-				continue;
-			}
+	for (ifp = ifnet; ifp; ifp = ifp->if_next) {
+		if (ifp->if_timer == 0 || --ifp->if_timer)
+			continue;
+		if (ifp->if_watchdog)
 			(*ifp->if_watchdog)(ifp->if_unit);
-		}
+	}
 	timeout(if_slowtimo, (caddr_t)0, hz / IFNET_SLOWHZ);
 }
+
+/*
+ * Map interface name to
+ * interface structure pointer.
+ */
+struct ifnet *
+ifunit(name)
+	register char *name;
+{
+	register char *cp;
+	register struct ifnet *ifp;
+	int unit;
+
+	for (cp = name; cp < name + IFNAMSIZ && *cp; cp++)
+		if (*cp >= '0' && *cp <= '9')
+			break;
+	if (*cp == '\0' || cp == name + IFNAMSIZ)
+		return ((struct ifnet *)0);
+	unit = *cp - '0', *cp = 0;
+	for (ifp = ifnet; ifp; ifp = ifp->if_next) {
+		if (bcmp(ifp->if_name, name, (unsigned)(cp - name)))
+			continue;
+		if (unit == ifp->if_unit)
+			break;
+	}
+	return (ifp);
+}
+
+/*
+ * Interface ioctls.
+ */
+ifioctl(cmd, data)
+	int cmd;
+	caddr_t data;
+{
+	register struct ifnet *ifp;
+	register struct ifreq *ifr;
+
+	switch (cmd) {
+
+	case SIOCGIFCONF:
+		return (ifconf(cmd, data));
+
+	case SIOCSIFADDR:
+	case SIOCSIFFLAGS:
+	case SIOCSIFDSTADDR:
+		if (!suser())
+			return (u.u_error);
+		break;
+	}
+	ifr = (struct ifreq *)data;
+	ifp = ifunit(ifr->ifr_name);
+	if (ifp == 0)
+		return (ENXIO);
+	switch (cmd) {
+
+	case SIOCGIFADDR:
+		ifr->ifr_addr = ifp->if_addr;
+		break;
+
+	case SIOCGIFDSTADDR:
+		if ((ifp->if_flags & IFF_POINTOPOINT) == 0)
+			return (EINVAL);
+		ifr->ifr_dstaddr = ifp->if_dstaddr;
+		break;
+
+	case SIOCGIFFLAGS:
+		ifr->ifr_flags = ifp->if_flags;
+		break;
+
+	case SIOCSIFFLAGS:
+		if (ifp->if_flags & IFF_UP && (ifr->ifr_flags & IFF_UP) == 0) {
+			int s = splimp();
+			if_down(ifp);
+			splx(s);
+		}
+		ifp->if_flags = ifr->ifr_flags;
+		break;
+
+	default:
+		if (ifp->if_ioctl == 0)
+			return (EOPNOTSUPP);
+		return ((*ifp->if_ioctl)(ifp, cmd, data));
+	}
+	return (0);
+}
+
+/*
+ * Return interface configuration
+ * of system.  List may be used
+ * in later ioctl's (above) to get
+ * other information.
+ */
+/*ARGSUSED*/
+ifconf(cmd, data)
+	int cmd;
+	caddr_t data;
+{
+	register struct ifconf *ifc = (struct ifconf *)data;
+	register struct ifnet *ifp = ifnet;
+	register char *cp, *ep;
+	struct ifreq ifr, *ifrp;
+	int space = ifc->ifc_len, error = 0;
+
+	ifrp = ifc->ifc_req;
+	ep = ifr.ifr_name + sizeof (ifr.ifr_name) - 2;
+	for (; space > sizeof (ifr) && ifp; ifp = ifp->if_next) {
+		bcopy(ifp->if_name, ifr.ifr_name, sizeof (ifr.ifr_name) - 2);
+		for (cp = ifr.ifr_name; cp < ep && *cp; cp++)
+			;
+		*cp++ = '0' + ifp->if_unit; *cp = '\0';
+		ifr.ifr_addr = ifp->if_addr;
+		error = copyout((caddr_t)&ifr, (caddr_t)ifrp, sizeof (ifr));
+		if (error)
+			break;
+		space -= sizeof (ifr), ifrp++;
+	}
+	ifc->ifc_len -= space;
+	return (error);
+}