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

Cross-merge networking fixes after downstream PR (net-6.19-rc6).

No conflicts, or adjacent changes.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>

4 files changed, 31 insertions, 9 deletions

diff --git a/net/core/dev.c b/net/core/dev.c
index c711da335510..2661b68f5be3 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -477,15 +477,21 @@ static const unsigned short netdev_lock_type[] = {
 	 ARPHRD_IEEE1394, ARPHRD_EUI64, ARPHRD_INFINIBAND, ARPHRD_SLIP,
 	 ARPHRD_CSLIP, ARPHRD_SLIP6, ARPHRD_CSLIP6, ARPHRD_RSRVD,
 	 ARPHRD_ADAPT, ARPHRD_ROSE, ARPHRD_X25, ARPHRD_HWX25,
+	 ARPHRD_CAN, ARPHRD_MCTP,
 	 ARPHRD_PPP, ARPHRD_CISCO, ARPHRD_LAPB, ARPHRD_DDCMP,
-	 ARPHRD_RAWHDLC, ARPHRD_TUNNEL, ARPHRD_TUNNEL6, ARPHRD_FRAD,
+	 ARPHRD_RAWHDLC, ARPHRD_RAWIP,
+	 ARPHRD_TUNNEL, ARPHRD_TUNNEL6, ARPHRD_FRAD,
 	 ARPHRD_SKIP, ARPHRD_LOOPBACK, ARPHRD_LOCALTLK, ARPHRD_FDDI,
 	 ARPHRD_BIF, ARPHRD_SIT, ARPHRD_IPDDP, ARPHRD_IPGRE,
 	 ARPHRD_PIMREG, ARPHRD_HIPPI, ARPHRD_ASH, ARPHRD_ECONET,
 	 ARPHRD_IRDA, ARPHRD_FCPP, ARPHRD_FCAL, ARPHRD_FCPL,
 	 ARPHRD_FCFABRIC, ARPHRD_IEEE80211, ARPHRD_IEEE80211_PRISM,
-	 ARPHRD_IEEE80211_RADIOTAP, ARPHRD_PHONET, ARPHRD_PHONET_PIPE,
-	 ARPHRD_IEEE802154, ARPHRD_VOID, ARPHRD_NONE};
+	 ARPHRD_IEEE80211_RADIOTAP,
+	 ARPHRD_IEEE802154, ARPHRD_IEEE802154_MONITOR,
+	 ARPHRD_PHONET, ARPHRD_PHONET_PIPE,
+	 ARPHRD_CAIF, ARPHRD_IP6GRE, ARPHRD_NETLINK, ARPHRD_6LOWPAN,
+	 ARPHRD_VSOCKMON,
+	 ARPHRD_VOID, ARPHRD_NONE};
 
 static const char *const netdev_lock_name[] = {
 	"_xmit_NETROM", "_xmit_ETHER", "_xmit_EETHER", "_xmit_AX25",
@@ -494,15 +500,21 @@ static const char *const netdev_lock_name[] = {
 	"_xmit_IEEE1394", "_xmit_EUI64", "_xmit_INFINIBAND", "_xmit_SLIP",
 	"_xmit_CSLIP", "_xmit_SLIP6", "_xmit_CSLIP6", "_xmit_RSRVD",
 	"_xmit_ADAPT", "_xmit_ROSE", "_xmit_X25", "_xmit_HWX25",
+	"_xmit_CAN", "_xmit_MCTP",
 	"_xmit_PPP", "_xmit_CISCO", "_xmit_LAPB", "_xmit_DDCMP",
-	"_xmit_RAWHDLC", "_xmit_TUNNEL", "_xmit_TUNNEL6", "_xmit_FRAD",
+	"_xmit_RAWHDLC", "_xmit_RAWIP",
+	"_xmit_TUNNEL", "_xmit_TUNNEL6", "_xmit_FRAD",
 	"_xmit_SKIP", "_xmit_LOOPBACK", "_xmit_LOCALTLK", "_xmit_FDDI",
 	"_xmit_BIF", "_xmit_SIT", "_xmit_IPDDP", "_xmit_IPGRE",
 	"_xmit_PIMREG", "_xmit_HIPPI", "_xmit_ASH", "_xmit_ECONET",
 	"_xmit_IRDA", "_xmit_FCPP", "_xmit_FCAL", "_xmit_FCPL",
 	"_xmit_FCFABRIC", "_xmit_IEEE80211", "_xmit_IEEE80211_PRISM",
-	"_xmit_IEEE80211_RADIOTAP", "_xmit_PHONET", "_xmit_PHONET_PIPE",
-	"_xmit_IEEE802154", "_xmit_VOID", "_xmit_NONE"};
+	"_xmit_IEEE80211_RADIOTAP",
+	"_xmit_IEEE802154", "_xmit_IEEE802154_MONITOR",
+	"_xmit_PHONET", "_xmit_PHONET_PIPE",
+	"_xmit_CAIF", "_xmit_IP6GRE", "_xmit_NETLINK", "_xmit_6LOWPAN",
+	"_xmit_VSOCKMON",
+	"_xmit_VOID", "_xmit_NONE"};
 
 static struct lock_class_key netdev_xmit_lock_key[ARRAY_SIZE(netdev_lock_type)];
 static struct lock_class_key netdev_addr_lock_key[ARRAY_SIZE(netdev_lock_type)];
@@ -515,6 +527,7 @@ static inline unsigned short netdev_lock_pos(unsigned short dev_type)
 		if (netdev_lock_type[i] == dev_type)
 			return i;
 	/* the last key is used by default */
+	WARN_ONCE(1, "netdev_lock_pos() could not find dev_type=%u\n", dev_type);
 	return ARRAY_SIZE(netdev_lock_type) - 1;
 }
 
@@ -4189,8 +4202,8 @@ static inline int __dev_xmit_skb(struct sk_buff *skb, struct Qdisc *q,
 	do {
 		if (first_n && !defer_count) {
 			defer_count = atomic_long_inc_return(&q->defer_count);
-			if (unlikely(defer_count > READ_ONCE(q->limit))) {
-				kfree_skb_reason(skb, SKB_DROP_REASON_QDISC_DROP);
+			if (unlikely(defer_count > READ_ONCE(net_hotdata.qdisc_max_burst))) {
+				kfree_skb_reason(skb, SKB_DROP_REASON_QDISC_BURST_DROP);
 				return NET_XMIT_DROP;
 			}
 		}
@@ -4208,7 +4221,7 @@ static inline int __dev_xmit_skb(struct sk_buff *skb, struct Qdisc *q,
 	ll_list = llist_del_all(&q->defer_list);
 	/* There is a small race because we clear defer_count not atomically
 	 * with the prior llist_del_all(). This means defer_list could grow
-	 * over q->limit.
+	 * over qdisc_max_burst.
 	 */
 	atomic_long_set(&q->defer_count, 0);
 
diff --git a/net/core/dst.c b/net/core/dst.c
index e9d35f49c9e7..1dae26c51ebe 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -68,6 +68,7 @@ void dst_init(struct dst_entry *dst, struct dst_ops *ops,
 	dst->lwtstate = NULL;
 	rcuref_init(&dst->__rcuref, 1);
 	INIT_LIST_HEAD(&dst->rt_uncached);
+	dst->rt_uncached_list = NULL;
 	dst->__use = 0;
 	dst->lastuse = jiffies;
 	dst->flags = flags;
diff --git a/net/core/hotdata.c b/net/core/hotdata.c
index dddd5c287cf0..a6db36580817 100644
--- a/net/core/hotdata.c
+++ b/net/core/hotdata.c
@@ -17,6 +17,7 @@ struct net_hotdata net_hotdata __cacheline_aligned = {
 
 	.tstamp_prequeue = 1,
 	.max_backlog = 1000,
+	.qdisc_max_burst = 1000,
 	.dev_tx_weight = 64,
 	.dev_rx_weight = 64,
 	.sysctl_max_skb_frags = MAX_SKB_FRAGS,
diff --git a/net/core/sysctl_net_core.c b/net/core/sysctl_net_core.c
index 8d4decb2606f..05dd55cf8b58 100644
--- a/net/core/sysctl_net_core.c
+++ b/net/core/sysctl_net_core.c
@@ -430,6 +430,13 @@ static struct ctl_table net_core_table[] = {
 		.proc_handler	= proc_dointvec
 	},
 	{
+		.procname	= "qdisc_max_burst",
+		.data		= &net_hotdata.qdisc_max_burst,
+		.maxlen		= sizeof(int),
+		.mode		= 0644,
+		.proc_handler	= proc_dointvec
+	},
+	{
 		.procname	= "netdev_rss_key",
 		.data		= &netdev_rss_key,
 		.maxlen		= sizeof(int),