diff mbox series

[5.15,169/207] mctp: Dont let RTM_DELROUTE delete local routes

Message ID 20211206145616.122165208@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Dec. 6, 2021, 2:57 p.m. UTC 
From: Matt Johnston <matt@codeconstruct.com.au>

[ Upstream commit 76d001603c509562181f3787a7065b8e163bc7b9 ]

We need to test against the existing route type, not
the rtm_type in the netlink request.

Fixes: 83f0a0b7285b ("mctp: Specify route types, require rtm_type in RTM_*ROUTE messages")
Signed-off-by: Matt Johnston <matt@codeconstruct.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 net/mctp/route.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/net/mctp/route.c b/net/mctp/route.c
index 5ca186d53cb0f..fb1bf4ec85296 100644
--- a/net/mctp/route.c
+++ b/net/mctp/route.c
@@ -760,7 +760,7 @@  static int mctp_route_add(struct mctp_dev *mdev, mctp_eid_t daddr_start,
 }
 
 static int mctp_route_remove(struct mctp_dev *mdev, mctp_eid_t daddr_start,
-			     unsigned int daddr_extent)
+			     unsigned int daddr_extent, unsigned char type)
 {
 	struct net *net = dev_net(mdev->dev);
 	struct mctp_route *rt, *tmp;
@@ -777,7 +777,8 @@  static int mctp_route_remove(struct mctp_dev *mdev, mctp_eid_t daddr_start,
 
 	list_for_each_entry_safe(rt, tmp, &net->mctp.routes, list) {
 		if (rt->dev == mdev &&
-		    rt->min == daddr_start && rt->max == daddr_end) {
+		    rt->min == daddr_start && rt->max == daddr_end &&
+		    rt->type == type) {
 			list_del_rcu(&rt->list);
 			/* TODO: immediate RTM_DELROUTE */
 			mctp_route_release(rt);
@@ -795,7 +796,7 @@  int mctp_route_add_local(struct mctp_dev *mdev, mctp_eid_t addr)
 
 int mctp_route_remove_local(struct mctp_dev *mdev, mctp_eid_t addr)
 {
-	return mctp_route_remove(mdev, addr, 0);
+	return mctp_route_remove(mdev, addr, 0, RTN_LOCAL);
 }
 
 /* removes all entries for a given device */
@@ -975,7 +976,7 @@  static int mctp_delroute(struct sk_buff *skb, struct nlmsghdr *nlh,
 	if (rtm->rtm_type != RTN_UNICAST)
 		return -EINVAL;
 
-	rc = mctp_route_remove(mdev, daddr_start, rtm->rtm_dst_len);
+	rc = mctp_route_remove(mdev, daddr_start, rtm->rtm_dst_len, RTN_UNICAST);
 	return rc;
 }