Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Cross-merge networking fixes after downstream PR (net-6.12-rc4).

Conflicts:

107a034d5c1e ("net/mlx5: qos: Store rate groups in a qos domain")
1da9cfd6c41c ("net/mlx5: Unregister notifier on eswitch init failure")

Signed-off-by: Paolo Abeni <pabeni@redhat.com>

3 files changed, 44 insertions, 16 deletions

diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c
index d81fff93d208..ec29ead83e74 100644
--- a/net/ipv4/devinet.c
+++ b/net/ipv4/devinet.c
@@ -295,17 +295,19 @@ static struct in_device *inetdev_init(struct net_device *dev)
 	/* Account for reference dev->ip_ptr (below) */
 	refcount_set(&in_dev->refcnt, 1);
 
-	err = devinet_sysctl_register(in_dev);
-	if (err) {
-		in_dev->dead = 1;
-		neigh_parms_release(&arp_tbl, in_dev->arp_parms);
-		in_dev_put(in_dev);
-		in_dev = NULL;
-		goto out;
+	if (dev != blackhole_netdev) {
+		err = devinet_sysctl_register(in_dev);
+		if (err) {
+			in_dev->dead = 1;
+			neigh_parms_release(&arp_tbl, in_dev->arp_parms);
+			in_dev_put(in_dev);
+			in_dev = NULL;
+			goto out;
+		}
+		ip_mc_init_dev(in_dev);
+		if (dev->flags & IFF_UP)
+			ip_mc_up(in_dev);
 	}
-	ip_mc_init_dev(in_dev);
-	if (dev->flags & IFF_UP)
-		ip_mc_up(in_dev);
 
 	/* we can receive as soon as ip_ptr is set -- do this last */
 	rcu_assign_pointer(dev->ip_ptr, in_dev);
@@ -344,6 +346,19 @@ static void inetdev_destroy(struct in_device *in_dev)
 	in_dev_put(in_dev);
 }
 
+static int __init inet_blackhole_dev_init(void)
+{
+	int err = 0;
+
+	rtnl_lock();
+	if (!inetdev_init(blackhole_netdev))
+		err = -ENOMEM;
+	rtnl_unlock();
+
+	return err;
+}
+late_initcall(inet_blackhole_dev_init);
+
 int inet_addr_onlink(struct in_device *in_dev, __be32 a, __be32 b)
 {
 	const struct in_ifaddr *ifa;
diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index 12e975ed4910..491c2c6b683e 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -1047,21 +1047,31 @@ static bool reqsk_queue_unlink(struct request_sock *req)
 		found = __sk_nulls_del_node_init_rcu(sk);
 		spin_unlock(lock);
 	}
-	if (timer_pending(&req->rsk_timer) && del_timer_sync(&req->rsk_timer))
-		reqsk_put(req);
+
 	return found;
 }
 
-bool inet_csk_reqsk_queue_drop(struct sock *sk, struct request_sock *req)
+static bool __inet_csk_reqsk_queue_drop(struct sock *sk,
+					struct request_sock *req,
+					bool from_timer)
 {
 	bool unlinked = reqsk_queue_unlink(req);
 
+	if (!from_timer && timer_delete_sync(&req->rsk_timer))
+		reqsk_put(req);
+
 	if (unlinked) {
 		reqsk_queue_removed(&inet_csk(sk)->icsk_accept_queue, req);
 		reqsk_put(req);
 	}
+
 	return unlinked;
 }
+
+bool inet_csk_reqsk_queue_drop(struct sock *sk, struct request_sock *req)
+{
+	return __inet_csk_reqsk_queue_drop(sk, req, false);
+}
 EXPORT_SYMBOL(inet_csk_reqsk_queue_drop);
 
 void inet_csk_reqsk_queue_drop_and_put(struct sock *sk, struct request_sock *req)
@@ -1154,7 +1164,7 @@ static void reqsk_timer_handler(struct timer_list *t)
 
 		if (!inet_ehash_insert(req_to_sk(nreq), req_to_sk(oreq), NULL)) {
 			/* delete timer */
-			inet_csk_reqsk_queue_drop(sk_listener, nreq);
+			__inet_csk_reqsk_queue_drop(sk_listener, nreq, true);
 			goto no_ownership;
 		}
 
@@ -1180,7 +1190,8 @@ no_ownership:
 	}
 
 drop:
-	inet_csk_reqsk_queue_drop_and_put(oreq->rsk_listener, oreq);
+	__inet_csk_reqsk_queue_drop(sk_listener, oreq, true);
+	reqsk_put(req);
 }
 
 static bool reqsk_queue_hash_req(struct request_sock *req,
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 4b74a25d0b6e..0e24916b39d4 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -951,8 +951,10 @@ static int udp_send_skb(struct sk_buff *skb, struct flowi4 *fl4,
 			skb_shinfo(skb)->gso_type = SKB_GSO_UDP_L4;
 			skb_shinfo(skb)->gso_segs = DIV_ROUND_UP(datalen,
 								 cork->gso_size);
+
+			/* Don't checksum the payload, skb will get segmented */
+			goto csum_partial;
 		}
-		goto csum_partial;
 	}
 
 	if (is_udplite)  				 /*     UDP-Lite      */