Merge tag 'net-7.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from Bluetooth, wireless and netfilter.

  Craziness continues with no end in sight. Even discounting the driver
  revert this is a pretty huge PR for standards of the previous era. I'd
  speculate - we haven't seen the worst of it, yet. Good news, I guess,
  is that so far we haven't seen many (any?) cases of "AI reported a
  bug, we fixed it and a real user regressed".

  Current release - fix to a fix:

   - Bluetooth: btmtk: accept too short WMT FUNC_CTRL events

   - vsock/virtio: relax the recently added memory limit a little

  Current release - regressions:

   - IB/IPoIB: make sure IB drivers always use async set_rx_mode since
     some (mlx5) are now required to use it due to locking changes

  Previous releases - regressions:

   - udp: fix UDP length on last GSO_PARTIAL segment

   - af_unix: fix UAF read of tail->len in unix_stream_data_wait()

   - tcp: fix stale per-CPU tcp_tw_isn leak enabling ISN prediction

   - mlx5e: fix unlocked writing to ICOSQ, breaking AF_XDP

  Previous releases - always broken:

   - tap: fix stack info leak in tap_ioctl() SIOCGIFHWADDR

   - ipv4: raw: reject IP_HDRINCL packets with ihl < 5

   - Bluetooth: a lot of locking and concurrency fixes (as always)

   - batman-adv (mesh wireless networking): a lot of random fixes for
     issues reported by security researchers and Sashiko

   - netfilter: same thing, a lot of small security-ish fixes all over
     the place, nothing really stands out

  Misc:

   - bring back the old 3c509 driver, Maciej wants to maintain it"

* tag 'net-7.1-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (187 commits)
  net: enetc: avoid VF->PF mailbox timeout during SR-IOV teardown
  net: enetc: fix init and teardown order to prevent use of unsafe resources
  net: enetc: fix unbounded loop and interrupt handling in VF-to-PF messaging
  net: enetc: fix DMA write to freed memory in enetc_msg_free_mbx()
  net: enetc: fix race condition in VF MAC address configuration
  net: enetc: fix TOCTOU race and validate VF MAC address
  net: enetc: add ratelimiting to VF mailbox error messages
  net: enetc: fix missing error code when pf->vf_state allocation fails
  net: enetc: fix incorrect mailbox message status returned to VFs
  net: bridge: prevent too big nested attributes in br_fill_linkxstats()
  l2tp: use list_del_rcu in l2tp_session_unhash
  net: bcmgenet: keep RBUF EEE/PM disabled
  ethernet: 3c509: Fix most coding style issues
  ethernet: 3c509: Update documentation to match MAINTAINERS
  ethernet: 3c509: Add GPL 2.0 SPDX license identifier
  ethernet: 3c509: Fix AUI transceiver type selection
  Revert "drivers: net: 3com: 3c509: Remove this driver"
  tools: ynl: support listening on all nsids
  net: gro: don't merge zcopy skbs
  pds_core: ensure null-termination for firmware version strings
  ...

6 files changed, 15 insertions, 6 deletions

diff --git a/include/net/bluetooth/bluetooth.h b/include/net/bluetooth/bluetooth.h
index 69eed69f7f26..3faea66b1979 100644
--- a/include/net/bluetooth/bluetooth.h
+++ b/include/net/bluetooth/bluetooth.h
@@ -398,6 +398,7 @@ void baswap(bdaddr_t *dst, const bdaddr_t *src);
 struct bt_sock {
 	struct sock sk;
 	struct list_head accept_q;
+	spinlock_t accept_q_lock; /* protects accept_q */
 	struct sock *parent;
 	unsigned long flags;
 	void (*skb_msg_name)(struct sk_buff *, void *, int *);
diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index 02762ce73a0c..a02e569813d2 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -1186,8 +1186,9 @@ struct netns_ipvs {
 	struct timer_list	dest_trash_timer; /* expiration timer */
 	struct mutex		service_mutex;    /* service reconfig */
 	struct rw_semaphore	svc_resize_sem;   /* svc_table resizing */
+	struct rw_semaphore	svc_replace_sem;  /* svc_table replace */
 	struct delayed_work	svc_resize_work;  /* resize svc_table */
-	atomic_t		svc_table_changes;/* ++ on new table */
+	atomic_t		svc_table_changes;/* ++ on table changes */
 	/* Service counters */
 	atomic_t		num_services[IP_VS_AF_MAX];   /* Services */
 	atomic_t		fwm_services[IP_VS_AF_MAX];   /* Services */
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 2dfee6d4258a..8860cc2175fc 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -489,11 +489,15 @@ static inline int neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
 static inline int neigh_hh_bridge(struct hh_cache *hh, struct sk_buff *skb)
 {
-	unsigned int seq, hh_alen;
+	unsigned int seq, hh_alen = HH_DATA_ALIGN(ETH_HLEN);
+	int err;
+
+	err = skb_cow_head(skb, hh_alen);
+	if (err)
+		return err;
 
 	do {
 		seq = read_seqbegin(&hh->hh_lock);
-		hh_alen = HH_DATA_ALIGN(ETH_HLEN);
 		memcpy(skb->data - hh_alen, hh->hh_data, ETH_ALEN + hh_alen - ETH_HLEN);
 	} while (read_seqretry(&hh->hh_lock, seq));
 	return 0;
diff --git a/include/net/net_shaper.h b/include/net/net_shaper.h
index 5c3f49b52fe9..3939b816b001 100644
--- a/include/net/net_shaper.h
+++ b/include/net/net_shaper.h
@@ -53,6 +53,7 @@ struct net_shaper {
 
 	/* private: */
 	u32 leaves; /* accounted only for NODE scope */
+	bool valid;
 	struct rcu_head rcu;
 };
 
diff --git a/include/net/netfilter/nf_queue.h b/include/net/netfilter/nf_queue.h
index d17035d14d96..3978c3174cdb 100644
--- a/include/net/netfilter/nf_queue.h
+++ b/include/net/netfilter/nf_queue.h
@@ -14,6 +14,7 @@ struct nf_queue_entry {
 	struct list_head	list;
 	struct rhash_head	hash_node;
 	struct sk_buff		*skb;
+	struct net_device	*skb_dev;
 	unsigned int		id;
 	unsigned int		hook_index;	/* index in hook_entries->hook[] */
 #if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
diff --git a/include/net/tcp.h b/include/net/tcp.h
index ecbadcb3a744..98848db62894 100644
--- a/include/net/tcp.h
+++ b/include/net/tcp.h
@@ -65,8 +65,6 @@ static inline void tcp_orphan_count_dec(void)
 	this_cpu_dec(tcp_orphan_count);
 }
 
-DECLARE_PER_CPU(u32, tcp_tw_isn);
-
 void tcp_time_wait(struct sock *sk, int state, int timeo);
 
 #define MAX_TCP_HEADER	L1_CACHE_ALIGN(128 + MAX_HEADER)
@@ -1102,10 +1100,13 @@ struct tcp_skb_cb {
 	__u32		seq;		/* Starting sequence number	*/
 	__u32		end_seq;	/* SEQ + FIN + SYN + datalen	*/
 	union {
-		/* Note :
+		/* Notes :
+		 *	tcp_tw_isn is used in input path only
+		 *	(isn chosen by tcp_timewait_state_process())
 		 * 	  tcp_gso_segs/size are used in write queue only,
 		 *	  cf tcp_skb_pcount()/tcp_skb_mss()
 		 */
+		u32		tcp_tw_isn;
 		struct {
 			u16	tcp_gso_segs;
 			u16	tcp_gso_size;