Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next

Pull networking updates from David Miller:

 1) Platform regulatory domain support for ath10k, from Bartosz
    Markowski.

 2) Centralize min/max MTU checking, thus removing tons of duplicated
    code all of the the various drivers. From Jarod Wilson.

 3) Support ingress actions in act_mirred, from Shmulik Ladkani.

 4) Improve device adjacency tracking, from David Ahern.

 5) Add support for LED triggers on PHY link state changes, from Zach
    Brown.

 6) Improve UDP socket memory accounting, from Paolo Abeni.

 7) Set SK_MEM_QUANTUM to a fixed size of 4096, instead of PAGE_SIZE.
    From Eric Dumazet.

 8) Collapse TCP SKBs at retransmit time even if the right side SKB has
    frags. Also from Eric Dumazet.

 9) Add IP_RECVFRAGSIZE and IPV6_RECVFRAGSIZE cmsgs, from Willem de
    Bruijn.

10) Support routing by UID, from Lorenzo Colitti.

11) Handle L3 domain binding (ie. VRF) for RAW sockets, from David
    Ahern.

12) tcp_get_info() can run lockless, from Eric Dumazet.

13) 4-tuple UDP hashing in SFC driver, from Edward Cree.

14) Avoid reorders in GRO code, from Eric Dumazet.

15) IPV6 Segment Routing support, from David Lebrun.

16) Support MPLS push and pop for L3 packets in openvswitch, from Jiri
    Benc.

17) Add LRU datastructure support for BPF, Martin KaFai Lau.

18) VF support in liquidio driver, from Raghu Vatsavayi.

19) Multiqueue support in alx driver, from Tobias Regnery.

20) Networking cgroup BPF support, from Daniel Mack.

21) TCP chronograph measurements, from Francis Yan.

22) XDP support for qed driver, from Yuval Mintz.

23) BPF based lwtunnels, from Thomas Graf.

24) Consistent FIB dumping to offloading drivers, from Ido Schimmel.

25) Many optimizations for UDP under high load, from Eric Dumazet.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1522 commits)
  netfilter: nft_counter: rework atomic dump and reset
  e1000: use disable_hardirq() for e1000_netpoll()
  i40e: don't truncate match_method assignment
  net: ethernet: ti: netcp: add support of cpts
  net: phy: phy drivers should not set SUPPORTED_[Asym_]Pause
  net: l2tp: ppp: change PPPOL2TP_MSG_* => L2TP_MSG_*
  net: l2tp: deprecate PPPOL2TP_MSG_* in favour of L2TP_MSG_*
  net: l2tp: export debug flags to UAPI
  net: ethernet: stmmac: remove private tx queue lock
  net: ethernet: sxgbe: remove private tx queue lock
  net: bridge: shorten ageing time on topology change
  net: bridge: add helper to set topology change
  net: bridge: add helper to offload ageing time
  net: nicvf: use new api ethtool_{get|set}_link_ksettings
  net: ethernet: ti: cpsw: sync rates for channels in dual emac mode
  net: ethernet: ti: cpsw: re-split res only when speed is changed
  net: ethernet: ti: cpsw: combine budget and weight split and check
  net: ethernet: ti: cpsw: don't start queue twice
  net: ethernet: ti: cpsw: use same macros to get active slave
  net: mvneta: select GENERIC_ALLOCATOR
  ...

1 files changed, 25 insertions, 18 deletions

diff --git a/net/batman-adv/network-coding.c b/net/batman-adv/network-coding.c
index e3baf697a35c..ab5a3bf0765f 100644
--- a/net/batman-adv/network-coding.c
+++ b/net/batman-adv/network-coding.c
@@ -44,7 +44,6 @@
 #include <linux/skbuff.h>
 #include <linux/slab.h>
 #include <linux/spinlock.h>
-#include <linux/stat.h>
 #include <linux/stddef.h>
 #include <linux/string.h>
 #include <linux/workqueue.h>
@@ -261,10 +260,16 @@ static void batadv_nc_path_put(struct batadv_nc_path *nc_path)
 /**
  * batadv_nc_packet_free - frees nc packet
  * @nc_packet: the nc packet to free
+ * @dropped: whether the packet is freed because is is dropped
  */
-static void batadv_nc_packet_free(struct batadv_nc_packet *nc_packet)
+static void batadv_nc_packet_free(struct batadv_nc_packet *nc_packet,
+				  bool dropped)
 {
-	kfree_skb(nc_packet->skb);
+	if (dropped)
+		kfree_skb(nc_packet->skb);
+	else
+		consume_skb(nc_packet->skb);
+
 	batadv_nc_path_put(nc_packet->nc_path);
 	kfree(nc_packet);
 }
@@ -577,7 +582,7 @@ static void batadv_nc_send_packet(struct batadv_nc_packet *nc_packet)
 {
 	batadv_send_unicast_skb(nc_packet->skb, nc_packet->neigh_node);
 	nc_packet->skb = NULL;
-	batadv_nc_packet_free(nc_packet);
+	batadv_nc_packet_free(nc_packet, false);
 }
 
 /**
@@ -611,7 +616,7 @@ static bool batadv_nc_sniffed_purge(struct batadv_priv *bat_priv,
 
 	/* purge nc packet */
 	list_del(&nc_packet->list);
-	batadv_nc_packet_free(nc_packet);
+	batadv_nc_packet_free(nc_packet, true);
 
 	res = true;
 
@@ -1209,11 +1214,11 @@ static bool batadv_nc_code_packets(struct batadv_priv *bat_priv,
 	}
 
 	/* skb_src is now coded into skb_dest, so free it */
-	kfree_skb(skb_src);
+	consume_skb(skb_src);
 
 	/* avoid duplicate free of skb from nc_packet */
 	nc_packet->skb = NULL;
-	batadv_nc_packet_free(nc_packet);
+	batadv_nc_packet_free(nc_packet, false);
 
 	/* Send the coded packet and return true */
 	batadv_send_unicast_skb(skb_dest, first_dest);
@@ -1400,7 +1405,7 @@ static void batadv_nc_skb_store_before_coding(struct batadv_priv *bat_priv,
 	/* batadv_nc_skb_store_for_decoding() clones the skb, so we must free
 	 * our ref
 	 */
-	kfree_skb(skb);
+	consume_skb(skb);
 }
 
 /**
@@ -1724,7 +1729,7 @@ batadv_nc_skb_decode_packet(struct batadv_priv *bat_priv, struct sk_buff *skb,
 	ether_addr_copy(unicast_packet->dest, orig_dest);
 	unicast_packet->ttvn = ttvn;
 
-	batadv_nc_packet_free(nc_packet);
+	batadv_nc_packet_free(nc_packet, false);
 	return unicast_packet;
 }
 
@@ -1814,11 +1819,11 @@ static int batadv_nc_recv_coded_packet(struct sk_buff *skb,
 
 	/* Check if network coding is enabled */
 	if (!atomic_read(&bat_priv->network_coding))
-		return NET_RX_DROP;
+		goto free_skb;
 
 	/* Make sure we can access (and remove) header */
 	if (unlikely(!pskb_may_pull(skb, hdr_size)))
-		return NET_RX_DROP;
+		goto free_skb;
 
 	coded_packet = (struct batadv_coded_packet *)skb->data;
 	ethhdr = eth_hdr(skb);
@@ -1826,7 +1831,7 @@ static int batadv_nc_recv_coded_packet(struct sk_buff *skb,
 	/* Verify frame is destined for us */
 	if (!batadv_is_my_mac(bat_priv, ethhdr->h_dest) &&
 	    !batadv_is_my_mac(bat_priv, coded_packet->second_dest))
-		return NET_RX_DROP;
+		goto free_skb;
 
 	/* Update stat counter */
 	if (batadv_is_my_mac(bat_priv, coded_packet->second_dest))
@@ -1836,7 +1841,7 @@ static int batadv_nc_recv_coded_packet(struct sk_buff *skb,
 						   coded_packet);
 	if (!nc_packet) {
 		batadv_inc_counter(bat_priv, BATADV_CNT_NC_DECODE_FAILED);
-		return NET_RX_DROP;
+		goto free_skb;
 	}
 
 	/* Make skb's linear, because decoding accesses the entire buffer */
@@ -1861,7 +1866,10 @@ static int batadv_nc_recv_coded_packet(struct sk_buff *skb,
 	return batadv_recv_unicast_packet(skb, recv_if);
 
 free_nc_packet:
-	batadv_nc_packet_free(nc_packet);
+	batadv_nc_packet_free(nc_packet, true);
+free_skb:
+	kfree_skb(skb);
+
 	return NET_RX_DROP;
 }
 
@@ -1961,17 +1969,16 @@ int batadv_nc_init_debugfs(struct batadv_priv *bat_priv)
 	if (!nc_dir)
 		goto out;
 
-	file = debugfs_create_u8("min_tq", S_IRUGO | S_IWUSR, nc_dir,
-				 &bat_priv->nc.min_tq);
+	file = debugfs_create_u8("min_tq", 0644, nc_dir, &bat_priv->nc.min_tq);
 	if (!file)
 		goto out;
 
-	file = debugfs_create_u32("max_fwd_delay", S_IRUGO | S_IWUSR, nc_dir,
+	file = debugfs_create_u32("max_fwd_delay", 0644, nc_dir,
 				  &bat_priv->nc.max_fwd_delay);
 	if (!file)
 		goto out;
 
-	file = debugfs_create_u32("max_buffer_time", S_IRUGO | S_IWUSR, nc_dir,
+	file = debugfs_create_u32("max_buffer_time", 0644, nc_dir,
 				  &bat_priv->nc.max_buffer_time);
 	if (!file)
 		goto out;