Further fixes related to the interface renaming. Now that we

properly translate the interface name passed to us, make sure
we also translate correctly before we return the list of
interfaces with the SIOCGIFCONF ioctl. It is common to use
the interface names returned by that ioctl in further ioctls,
such as SIOCGIFFLAGS.

Remove linux_ifname as it is no longer used. Also remove
ifname_bsd_to_linux as it cannot be used anymore now that
linux_ifname is removed (was deadcode anyway).

Reported and tested by: Andrew Atrens <atrens@nortelnetworks.com>

1 files changed, 12 insertions, 52 deletions

diff --git a/sys/compat/linux/linux_ioctl.c b/sys/compat/linux/linux_ioctl.c
index b81c45982572..f5ab820f6db9 100644
--- a/sys/compat/linux/linux_ioctl.c
+++ b/sys/compat/linux/linux_ioctl.c
@@ -1733,54 +1733,6 @@ linux_ioctl_console(struct thread *td, struct linux_ioctl_args *args)
 #define IFP_IS_ETH(ifp) (ifp->if_type == IFT_ETHER)
 
 /*
- * Construct the Linux name for an interface
- */
-
-int
-linux_ifname(struct ifnet *ifp, char *name, size_t size)
-{
-	if (IFP_IS_ETH(ifp))
-		return snprintf(name, LINUX_IFNAMSIZ,
-		    "eth%d", ifp->if_index);
-	return snprintf(name, LINUX_IFNAMSIZ,
-	    "%s%d", ifp->if_name, ifp->if_unit);
-}
-
-/*
- * Translate a FreeBSD interface name to a Linux interface name,
- * and return the associated ifnet structure.
- * bsdname and lxname need to be least IFNAMSIZ bytes long, but
- * can point to the same buffer.
- */
-#if 0
-static struct ifnet *
-ifname_bsd_to_linux(const char *bsdname, char *lxname)
-{
-	struct ifnet *ifp;
-	int len, unit;
-	char *ep;
-
-	for (len = 0; len < IFNAMSIZ; ++len)
-		if (!isalpha(bsdname[len]))
-			break;
-	if (len == 0 || len == IFNAMSIZ)
-		return (NULL);
-	unit = (int)strtoul(bsdname + len, &ep, 10);
-	if (ep == NULL || ep == bsdname + len || ep >= bsdname + IFNAMSIZ)
-		return (NULL);
-	TAILQ_FOREACH(ifp, &ifnet, if_link) {
-		if (ifp->if_unit == unit && ifp->if_name[len] == '\0' &&
-		    strncmp(ifp->if_name, bsdname, len) == 0)
-			break;
-	}
-	if (ifp != NULL)
-		linux_ifname(ifp, lxname, LINUX_IFNAMSIZ);
-	
-	return (ifp);
-}
-#endif
-
-/*
  * Translate a Linux interface name to a FreeBSD interface name,
  * and return the associated ifnet structure
  * bsdname and lxname need to be least IFNAMSIZ bytes long, but
@@ -1834,8 +1786,8 @@ linux_ifconf(struct thread *td, struct ifconf *uifc)
 	struct ifnet *ifp;
 	struct iovec iov;
 	struct uio uio;
-	int error;
-	
+	int error, ethno;
+
 	error = copyin(uifc, &ifc, sizeof ifc);
 	if (error != 0)
 		return (error);
@@ -1851,12 +1803,20 @@ linux_ifconf(struct thread *td, struct ifconf *uifc)
 	uio.uio_rw = UIO_READ;
 	uio.uio_td = td;
 
+	/* Keep track of eth interfaces */
+	ethno = 0;
+
 	/* return interface names but no addresses. */
 	TAILQ_FOREACH(ifp, &ifnet, if_link) {
 		if (uio.uio_resid <= 0)
 			break;
 		bzero(&ifr, sizeof ifr);
-		linux_ifname(ifp, ifr.ifr_name, LINUX_IFNAMSIZ);
+		if (IFP_IS_ETH(ifp))
+			snprintf(ifr.ifr_name, LINUX_IFNAMSIZ, "eth%d",
+			    ethno++);
+		else
+			snprintf(ifr.ifr_name, LINUX_IFNAMSIZ, "%s%d",
+			    ifp->if_name, ifp->if_unit);
 		error = uiomove((caddr_t)&ifr, sizeof ifr, &uio);
 		if (error != 0)
 			return (error);
@@ -1864,7 +1824,7 @@ linux_ifconf(struct thread *td, struct ifconf *uifc)
 
 	ifc.ifc_len -= uio.uio_resid;
 	error = copyout(&ifc, uifc, sizeof ifc);
-	
+
 	return (error);
 }