Merge tag 'net-6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

Pull networking fixes from Paolo Abeni:
 "Including fixes from bluetooth, bpf and wireless.

  Current release - regressions:

   - bpf:
      - fix wrong last sg check in sk_msg_recvmsg()
      - fix kernel BUG in purge_effective_progs()

   - mac80211:
      - fix possible leak in ieee80211_tx_control_port()
      - potential NULL dereference in ieee80211_tx_control_port()

  Current release - new code bugs:

   - nfp: fix the access to management firmware hanging

  Previous releases - regressions:

   - ip: fix triggering of 'icmp redirect'

   - sched: tbf: don't call qdisc_put() while holding tree lock

   - bpf: fix corrupted packets for XDP_SHARED_UMEM

   - bluetooth: hci_sync: fix suspend performance regression

   - micrel: fix probe failure

  Previous releases - always broken:

   - tcp: make global challenge ack rate limitation per net-ns and
     default disabled

   - tg3: fix potential hang-up on system reboot

   - mac802154: fix reception for no-daddr packets

  Misc:

   - r8152: add PID for the lenovo onelink+ dock"

* tag 'net-6.0-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (56 commits)
  net/smc: Remove redundant refcount increase
  Revert "sch_cake: Return __NET_XMIT_STOLEN when consuming enqueued skb"
  tcp: make global challenge ack rate limitation per net-ns and default disabled
  tcp: annotate data-race around challenge_timestamp
  net: dsa: hellcreek: Print warning only once
  ip: fix triggering of 'icmp redirect'
  sch_cake: Return __NET_XMIT_STOLEN when consuming enqueued skb
  selftests: net: sort .gitignore file
  Documentation: networking: correct possessive "its"
  kcm: fix strp_init() order and cleanup
  mlxbf_gige: compute MDIO period based on i1clk
  ethernet: rocker: fix sleep in atomic context bug in neigh_timer_handler
  net: lan966x: improve error handle in lan966x_fdma_rx_get_frame()
  nfp: fix the access to management firmware hanging
  net: phy: micrel: Make the GPIO to be non-exclusive
  net: virtio_net: fix notification coalescing comments
  net/sched: fix netdevice reference leaks in attach_default_qdiscs()
  net: sched: tbf: don't call qdisc_put() while holding tree lock
  net: Use u64_stats_fetch_begin_irq() for stats fetch.
  net: dsa: xrs700x: Use irqsave variant for u64 stats update
  ...

4 files changed, 13 insertions, 9 deletions

diff --git a/include/net/ip_tunnels.h b/include/net/ip_tunnels.h
index 63fac94f9ace..ced80e2f8b58 100644
--- a/include/net/ip_tunnels.h
+++ b/include/net/ip_tunnels.h
@@ -246,7 +246,8 @@ static inline void ip_tunnel_init_flow(struct flowi4 *fl4,
 				       __be32 daddr, __be32 saddr,
 				       __be32 key, __u8 tos,
 				       struct net *net, int oif,
-				       __u32 mark, __u32 tun_inner_hash)
+				       __u32 mark, __u32 tun_inner_hash,
+				       __u8 flow_flags)
 {
 	memset(fl4, 0, sizeof(*fl4));
 
@@ -263,6 +264,7 @@ static inline void ip_tunnel_init_flow(struct flowi4 *fl4,
 	fl4->fl4_gre_key = key;
 	fl4->flowi4_mark = mark;
 	fl4->flowi4_multipath_hash = tun_inner_hash;
+	fl4->flowi4_flags = flow_flags;
 }
 
 int ip_tunnel_init(struct net_device *dev);
diff --git a/include/net/netns/ipv4.h b/include/net/netns/ipv4.h
index c7320ef356d9..6320a76cefdc 100644
--- a/include/net/netns/ipv4.h
+++ b/include/net/netns/ipv4.h
@@ -179,6 +179,8 @@ struct netns_ipv4 {
 	unsigned int sysctl_tcp_fastopen_blackhole_timeout;
 	atomic_t tfo_active_disable_times;
 	unsigned long tfo_active_disable_stamp;
+	u32 tcp_challenge_timestamp;
+	u32 tcp_challenge_count;
 
 	int sysctl_udp_wmem_min;
 	int sysctl_udp_rmem_min;
diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 7bf9ba1329be..59a217ca2dfd 100644
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -79,7 +79,7 @@ struct bpf_insn {
 /* Key of an a BPF_MAP_TYPE_LPM_TRIE entry */
 struct bpf_lpm_trie_key {
 	__u32	prefixlen;	/* up to 32 for AF_INET, 128 for AF_INET6 */
-	__u8	data[];	/* Arbitrary size */
+	__u8	data[0];	/* Arbitrary size */
 };
 
 struct bpf_cgroup_storage_key {
diff --git a/include/uapi/linux/virtio_net.h b/include/uapi/linux/virtio_net.h
index 29ced55514d4..6cb842ea8979 100644
--- a/include/uapi/linux/virtio_net.h
+++ b/include/uapi/linux/virtio_net.h
@@ -56,7 +56,7 @@
 #define VIRTIO_NET_F_MQ	22	/* Device supports Receive Flow
 					 * Steering */
 #define VIRTIO_NET_F_CTRL_MAC_ADDR 23	/* Set MAC address */
-#define VIRTIO_NET_F_NOTF_COAL	53	/* Guest can handle notifications coalescing */
+#define VIRTIO_NET_F_NOTF_COAL	53	/* Device supports notifications coalescing */
 #define VIRTIO_NET_F_HASH_REPORT  57	/* Supports hash report */
 #define VIRTIO_NET_F_RSS	  60	/* Supports RSS RX steering */
 #define VIRTIO_NET_F_RSC_EXT	  61	/* extended coalescing info */
@@ -364,24 +364,24 @@ struct virtio_net_hash_config {
  */
 #define VIRTIO_NET_CTRL_NOTF_COAL		6
 /*
- * Set the tx-usecs/tx-max-packets patameters.
- * tx-usecs - Maximum number of usecs to delay a TX notification.
- * tx-max-packets - Maximum number of packets to send before a TX notification.
+ * Set the tx-usecs/tx-max-packets parameters.
  */
 struct virtio_net_ctrl_coal_tx {
+	/* Maximum number of packets to send before a TX notification */
 	__le32 tx_max_packets;
+	/* Maximum number of usecs to delay a TX notification */
 	__le32 tx_usecs;
 };
 
 #define VIRTIO_NET_CTRL_NOTF_COAL_TX_SET		0
 
 /*
- * Set the rx-usecs/rx-max-packets patameters.
- * rx-usecs - Maximum number of usecs to delay a RX notification.
- * rx-max-frames - Maximum number of packets to receive before a RX notification.
+ * Set the rx-usecs/rx-max-packets parameters.
  */
 struct virtio_net_ctrl_coal_rx {
+	/* Maximum number of packets to receive before a RX notification */
 	__le32 rx_max_packets;
+	/* Maximum number of usecs to delay a RX notification */
 	__le32 rx_usecs;
 };