svn commit: r324524 - stable/11/sys/compat/linuxkpi/common/include/linux

[Hans Petter Selasky]

Author: hselasky
Date: Wed Oct 11 10:12:22 2017
New Revision: 324524
URL: https://svnweb.freebsd.org/changeset/base/324524

Log:
  MFC r315405, r323351 and r323364:
  Add helper function similar to ip_dev_find() to the LinuxKPI to lookup
  a network device by its IPv6 address in the given VNET.
  
  Sponsored by:		Mellanox Technologies

Modified:
  stable/11/sys/compat/linuxkpi/common/include/linux/inetdevice.h
Directory Properties:
  stable/11/   (props changed)

Modified: stable/11/sys/compat/linuxkpi/common/include/linux/inetdevice.h
==============================================================================
--- stable/11/sys/compat/linuxkpi/common/include/linux/inetdevice.h	Wed Oct 11 10:04:17 2017	(r324523)
+++ stable/11/sys/compat/linuxkpi/common/include/linux/inetdevice.h	Wed Oct 11 10:12:22 2017	(r324524)
@@ -2,7 +2,7 @@
  * Copyright (c) 2010 Isilon Systems, Inc.
  * Copyright (c) 2010 iX Systems, Inc.
  * Copyright (c) 2010 Panasas, Inc.
- * Copyright (c) 2013 Mellanox Technologies, Ltd.
+ * Copyright (c) 2013-2017 Mellanox Technologies, Ltd.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -52,6 +52,40 @@ ip_dev_find(struct net *net, uint32_t addr)
 		if_ref(ifp);
 		ifa_free(ifa);
 	}
+	return (ifp);
+}
+
+static inline struct net_device *
+ip6_dev_find(struct vnet *vnet, struct in6_addr addr)
+{
+	struct sockaddr_in6 sin6;
+	struct ifaddr *ifa = NULL;
+	struct ifnet *ifp = NULL;
+	int x;
+
+	memset(&sin6, 0, sizeof(sin6));
+	sin6.sin6_addr = addr;
+	sin6.sin6_len = sizeof(sin6);
+	sin6.sin6_family = AF_INET6;
+	CURVNET_SET_QUIET(vnet);
+	if (IN6_IS_SCOPE_LINKLOCAL(&addr) ||
+	    IN6_IS_ADDR_MC_INTFACELOCAL(&addr)) {
+		/* XXX need to search all scope ID's */
+		for (x = 0; x <= V_if_index && x < 65536; x++) {
+			sin6.sin6_addr.s6_addr16[1] = htons(x);
+			ifa = ifa_ifwithaddr((struct sockaddr *)&sin6);
+			if (ifa != NULL)
+				break;
+		}
+	} else {
+		ifa = ifa_ifwithaddr((struct sockaddr *)&sin6);
+	}
+	if (ifa != NULL) {
+		ifp = ifa->ifa_ifp;
+		if_ref(ifp);
+		ifa_free(ifa);
+	}
+	CURVNET_RESTORE();
 	return (ifp);
 }