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

Pull networking updates from David Miller:

 1) Significantly shrink the core networking routing structures. Result
    of http://vger.kernel.org/~davem/seoul2017_netdev_keynote.pdf

 2) Add netdevsim driver for testing various offloads, from Jakub
    Kicinski.

 3) Support cross-chip FDB operations in DSA, from Vivien Didelot.

 4) Add a 2nd listener hash table for TCP, similar to what was done for
    UDP. From Martin KaFai Lau.

 5) Add eBPF based queue selection to tun, from Jason Wang.

 6) Lockless qdisc support, from John Fastabend.

 7) SCTP stream interleave support, from Xin Long.

 8) Smoother TCP receive autotuning, from Eric Dumazet.

 9) Lots of erspan tunneling enhancements, from William Tu.

10) Add true function call support to BPF, from Alexei Starovoitov.

11) Add explicit support for GRO HW offloading, from Michael Chan.

12) Support extack generation in more netlink subsystems. From Alexander
    Aring, Quentin Monnet, and Jakub Kicinski.

13) Add 1000BaseX, flow control, and EEE support to mvneta driver. From
    Russell King.

14) Add flow table abstraction to netfilter, from Pablo Neira Ayuso.

15) Many improvements and simplifications to the NFP driver bpf JIT,
    from Jakub Kicinski.

16) Support for ipv6 non-equal cost multipath routing, from Ido
    Schimmel.

17) Add resource abstration to devlink, from Arkadi Sharshevsky.

18) Packet scheduler classifier shared filter block support, from Jiri
    Pirko.

19) Avoid locking in act_csum, from Davide Caratti.

20) devinet_ioctl() simplifications from Al viro.

21) More TCP bpf improvements from Lawrence Brakmo.

22) Add support for onlink ipv6 route flag, similar to ipv4, from David
    Ahern.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1925 commits)
  tls: Add support for encryption using async offload accelerator
  ip6mr: fix stale iterator
  net/sched: kconfig: Remove blank help texts
  openvswitch: meter: Use 64-bit arithmetic instead of 32-bit
  tcp_nv: fix potential integer overflow in tcpnv_acked
  r8169: fix RTL8168EP take too long to complete driver initialization.
  qmi_wwan: Add support for Quectel EP06
  rtnetlink: enable IFLA_IF_NETNSID for RTM_NEWLINK
  ipmr: Fix ptrdiff_t print formatting
  ibmvnic: Wait for device response when changing MAC
  qlcnic: fix deadlock bug
  tcp: release sk_frag.page in tcp_disconnect
  ipv4: Get the address of interface correctly.
  net_sched: gen_estimator: fix lockdep splat
  net: macb: Handle HRESP error
  net/mlx5e: IPoIB, Fix copy-paste bug in flow steering refactoring
  ipv6: addrconf: break critical section in addrconf_verify_rtnl()
  ipv6: change route cache aging logic
  i40e/i40evf: Update DESC_NEEDED value to reflect larger value
  bnxt_en: cleanup DIM work on device shutdown
  ...

1 files changed, 43 insertions, 23 deletions

diff --git a/net/batman-adv/send.c b/net/batman-adv/send.c
index 7895323fd2a7..2a5ab6f1076d 100644
--- a/net/batman-adv/send.c
+++ b/net/batman-adv/send.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0
 /* Copyright (C) 2007-2017  B.A.T.M.A.N. contributors:
  *
  * Marek Lindner, Simon Wunderlich
@@ -23,7 +24,7 @@
 #include <linux/byteorder/generic.h>
 #include <linux/errno.h>
 #include <linux/etherdevice.h>
-#include <linux/fs.h>
+#include <linux/gfp.h>
 #include <linux/if.h>
 #include <linux/if_ether.h>
 #include <linux/jiffies.h>
@@ -54,7 +55,7 @@
 static void batadv_send_outstanding_bcast_packet(struct work_struct *work);
 
 /**
- * batadv_send_skb_packet - send an already prepared packet
+ * batadv_send_skb_packet() - send an already prepared packet
  * @skb: the packet to send
  * @hard_iface: the interface to use to send the broadcast packet
  * @dst_addr: the payload destination
@@ -123,12 +124,30 @@ send_skb_err:
 	return NET_XMIT_DROP;
 }
 
+/**
+ * batadv_send_broadcast_skb() - Send broadcast packet via hard interface
+ * @skb: packet to be transmitted (with batadv header and no outer eth header)
+ * @hard_iface: outgoing interface
+ *
+ * Return: A negative errno code is returned on a failure. A success does not
+ * guarantee the frame will be transmitted as it may be dropped due
+ * to congestion or traffic shaping.
+ */
 int batadv_send_broadcast_skb(struct sk_buff *skb,
 			      struct batadv_hard_iface *hard_iface)
 {
 	return batadv_send_skb_packet(skb, hard_iface, batadv_broadcast_addr);
 }
 
+/**
+ * batadv_send_unicast_skb() - Send unicast packet to neighbor
+ * @skb: packet to be transmitted (with batadv header and no outer eth header)
+ * @neigh: neighbor which is used as next hop to destination
+ *
+ * Return: A negative errno code is returned on a failure. A success does not
+ * guarantee the frame will be transmitted as it may be dropped due
+ * to congestion or traffic shaping.
+ */
 int batadv_send_unicast_skb(struct sk_buff *skb,
 			    struct batadv_neigh_node *neigh)
 {
@@ -153,7 +172,7 @@ int batadv_send_unicast_skb(struct sk_buff *skb,
 }
 
 /**
- * batadv_send_skb_to_orig - Lookup next-hop and transmit skb.
+ * batadv_send_skb_to_orig() - Lookup next-hop and transmit skb.
  * @skb: Packet to be transmitted.
  * @orig_node: Final destination of the packet.
  * @recv_if: Interface used when receiving the packet (can be NULL).
@@ -216,7 +235,7 @@ free_skb:
 }
 
 /**
- * batadv_send_skb_push_fill_unicast - extend the buffer and initialize the
+ * batadv_send_skb_push_fill_unicast() - extend the buffer and initialize the
  *  common fields for unicast packets
  * @skb: the skb carrying the unicast header to initialize
  * @hdr_size: amount of bytes to push at the beginning of the skb
@@ -249,7 +268,7 @@ batadv_send_skb_push_fill_unicast(struct sk_buff *skb, int hdr_size,
 }
 
 /**
- * batadv_send_skb_prepare_unicast - encapsulate an skb with a unicast header
+ * batadv_send_skb_prepare_unicast() - encapsulate an skb with a unicast header
  * @skb: the skb containing the payload to encapsulate
  * @orig_node: the destination node
  *
@@ -264,7 +283,7 @@ static bool batadv_send_skb_prepare_unicast(struct sk_buff *skb,
 }
 
 /**
- * batadv_send_skb_prepare_unicast_4addr - encapsulate an skb with a
+ * batadv_send_skb_prepare_unicast_4addr() - encapsulate an skb with a
  *  unicast 4addr header
  * @bat_priv: the bat priv with all the soft interface information
  * @skb: the skb containing the payload to encapsulate
@@ -308,7 +327,7 @@ out:
 }
 
 /**
- * batadv_send_skb_unicast - encapsulate and send an skb via unicast
+ * batadv_send_skb_unicast() - encapsulate and send an skb via unicast
  * @bat_priv: the bat priv with all the soft interface information
  * @skb: payload to send
  * @packet_type: the batman unicast packet type to use
@@ -378,7 +397,7 @@ out:
 }
 
 /**
- * batadv_send_skb_via_tt_generic - send an skb via TT lookup
+ * batadv_send_skb_via_tt_generic() - send an skb via TT lookup
  * @bat_priv: the bat priv with all the soft interface information
  * @skb: payload to send
  * @packet_type: the batman unicast packet type to use
@@ -425,7 +444,7 @@ int batadv_send_skb_via_tt_generic(struct batadv_priv *bat_priv,
 }
 
 /**
- * batadv_send_skb_via_gw - send an skb via gateway lookup
+ * batadv_send_skb_via_gw() - send an skb via gateway lookup
  * @bat_priv: the bat priv with all the soft interface information
  * @skb: payload to send
  * @vid: the vid to be used to search the translation table
@@ -452,7 +471,7 @@ int batadv_send_skb_via_gw(struct batadv_priv *bat_priv, struct sk_buff *skb,
 }
 
 /**
- * batadv_forw_packet_free - free a forwarding packet
+ * batadv_forw_packet_free() - free a forwarding packet
  * @forw_packet: The packet to free
  * @dropped: whether the packet is freed because is is dropped
  *
@@ -477,7 +496,7 @@ void batadv_forw_packet_free(struct batadv_forw_packet *forw_packet,
 }
 
 /**
- * batadv_forw_packet_alloc - allocate a forwarding packet
+ * batadv_forw_packet_alloc() - allocate a forwarding packet
  * @if_incoming: The (optional) if_incoming to be grabbed
  * @if_outgoing: The (optional) if_outgoing to be grabbed
  * @queue_left: The (optional) queue counter to decrease
@@ -543,7 +562,7 @@ err:
 }
 
 /**
- * batadv_forw_packet_was_stolen - check whether someone stole this packet
+ * batadv_forw_packet_was_stolen() - check whether someone stole this packet
  * @forw_packet: the forwarding packet to check
  *
  * This function checks whether the given forwarding packet was claimed by
@@ -558,7 +577,7 @@ batadv_forw_packet_was_stolen(struct batadv_forw_packet *forw_packet)
 }
 
 /**
- * batadv_forw_packet_steal - claim a forw_packet for free()
+ * batadv_forw_packet_steal() - claim a forw_packet for free()
  * @forw_packet: the forwarding packet to steal
  * @lock: a key to the store to steal from (e.g. forw_{bat,bcast}_list_lock)
  *
@@ -589,7 +608,7 @@ bool batadv_forw_packet_steal(struct batadv_forw_packet *forw_packet,
 }
 
 /**
- * batadv_forw_packet_list_steal - claim a list of forward packets for free()
+ * batadv_forw_packet_list_steal() - claim a list of forward packets for free()
  * @forw_list: the to be stolen forward packets
  * @cleanup_list: a backup pointer, to be able to dispose the packet later
  * @hard_iface: the interface to steal forward packets from
@@ -625,7 +644,7 @@ batadv_forw_packet_list_steal(struct hlist_head *forw_list,
 }
 
 /**
- * batadv_forw_packet_list_free - free a list of forward packets
+ * batadv_forw_packet_list_free() - free a list of forward packets
  * @head: a list of to be freed forw_packets
  *
  * This function cancels the scheduling of any packet in the provided list,
@@ -649,7 +668,7 @@ static void batadv_forw_packet_list_free(struct hlist_head *head)
 }
 
 /**
- * batadv_forw_packet_queue - try to queue a forwarding packet
+ * batadv_forw_packet_queue() - try to queue a forwarding packet
  * @forw_packet: the forwarding packet to queue
  * @lock: a key to the store (e.g. forw_{bat,bcast}_list_lock)
  * @head: the shelve to queue it on (e.g. forw_{bat,bcast}_list)
@@ -693,7 +712,7 @@ static void batadv_forw_packet_queue(struct batadv_forw_packet *forw_packet,
 }
 
 /**
- * batadv_forw_packet_bcast_queue - try to queue a broadcast packet
+ * batadv_forw_packet_bcast_queue() - try to queue a broadcast packet
  * @bat_priv: the bat priv with all the soft interface information
  * @forw_packet: the forwarding packet to queue
  * @send_time: timestamp (jiffies) when the packet is to be sent
@@ -712,7 +731,7 @@ batadv_forw_packet_bcast_queue(struct batadv_priv *bat_priv,
 }
 
 /**
- * batadv_forw_packet_ogmv1_queue - try to queue an OGMv1 packet
+ * batadv_forw_packet_ogmv1_queue() - try to queue an OGMv1 packet
  * @bat_priv: the bat priv with all the soft interface information
  * @forw_packet: the forwarding packet to queue
  * @send_time: timestamp (jiffies) when the packet is to be sent
@@ -730,7 +749,7 @@ void batadv_forw_packet_ogmv1_queue(struct batadv_priv *bat_priv,
 }
 
 /**
- * batadv_add_bcast_packet_to_list - queue broadcast packet for multiple sends
+ * batadv_add_bcast_packet_to_list() - queue broadcast packet for multiple sends
  * @bat_priv: the bat priv with all the soft interface information
  * @skb: broadcast packet to add
  * @delay: number of jiffies to wait before sending
@@ -790,7 +809,7 @@ err:
 }
 
 /**
- * batadv_forw_packet_bcasts_left - check if a retransmission is necessary
+ * batadv_forw_packet_bcasts_left() - check if a retransmission is necessary
  * @forw_packet: the forwarding packet to check
  * @hard_iface: the interface to check on
  *
@@ -818,7 +837,8 @@ batadv_forw_packet_bcasts_left(struct batadv_forw_packet *forw_packet,
 }
 
 /**
- * batadv_forw_packet_bcasts_inc - increment retransmission counter of a packet
+ * batadv_forw_packet_bcasts_inc() - increment retransmission counter of a
+ *  packet
  * @forw_packet: the packet to increase the counter for
  */
 static void
@@ -828,7 +848,7 @@ batadv_forw_packet_bcasts_inc(struct batadv_forw_packet *forw_packet)
 }
 
 /**
- * batadv_forw_packet_is_rebroadcast - check packet for previous transmissions
+ * batadv_forw_packet_is_rebroadcast() - check packet for previous transmissions
  * @forw_packet: the packet to check
  *
  * Return: True if this packet was transmitted before, false otherwise.
@@ -953,7 +973,7 @@ out:
 }
 
 /**
- * batadv_purge_outstanding_packets - stop/purge scheduled bcast/OGMv1 packets
+ * batadv_purge_outstanding_packets() - stop/purge scheduled bcast/OGMv1 packets
  * @bat_priv: the bat priv with all the soft interface information
  * @hard_iface: the hard interface to cancel and purge bcast/ogm packets on
  *