commit 462ce7cf70a565d9fd58421bb28a4bdcff9dfa6e
author Lorenzo Colitti <lorenzo@google.com> Mon Mar 31 16:23:51 2014 +0900
committer Gerrit - the friendly Code Review server <code-review@localhost> Wed Sep 17 03:26:12 2014 -0700
tree 08073040d1eeaa0b05e95fb9e7a78e162f4aab72
parent 1af043959e84f3e14fed7c9a965ce649217d2e42

net: core: Support UID-based routing.

This contains the following commits:

1. 0149763 net: core: Add a UID range to fib rules.
2. 1650474 net: core: Use the socket UID in routing lookups.
3. 0b16771 net: ipv4: Add the UID to the route cache.
4. ee058f1 net: core: Add a RTA_UID attribute to routes.
    This is so that userspace can do per-UID route lookups.

Bug: 15413527
Change-Id: I1285474c6734614d3bda6f61d88dfe89a4af7892
Signed-off-by: Lorenzo Colitti <lorenzo@google.com>
Git-commit: 0b428749ce5969bc06c73855e360141b4e7126e8
Git-repo: https://android.googlesource.com/kernel/common.git
Signed-off-by: Ian Maund <imaund@codeaurora.org>

net/ipv6/route.c

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index bc4888d..b503fed 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -2278,6 +2278,7 @@
 	[RTA_IIF]		= { .type = NLA_U32 },
 	[RTA_PRIORITY]          = { .type = NLA_U32 },
 	[RTA_METRICS]           = { .type = NLA_NESTED },
+	[RTA_UID]		= { .type = NLA_U32 },
 };
 
 static int rtm_to_fib6_config(struct sk_buff *skb, struct nlmsghdr *nlh,
@@ -2590,6 +2591,11 @@
 	if (tb[RTA_OIF])
 		oif = nla_get_u32(tb[RTA_OIF]);
 
+	if (tb[RTA_UID])
+		fl6.flowi6_uid = nla_get_u32(tb[RTA_UID]);
+	else
+		fl6.flowi6_uid = (iif ? (uid_t) -1 : current_uid());
+
 	if (iif) {
 		struct net_device *dev;
 		int flags = 0;