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

Pull networking changes from David Miller:
 "Noteworthy changes this time around:

   1) Multicast rejoin support for team driver, from Jiri Pirko.

   2) Centralize and simplify TCP RTT measurement handling in order to
      reduce the impact of bad RTO seeding from SYN/ACKs.  Also, when
      both timestamps and local RTT measurements are available prefer
      the later because there are broken middleware devices which
      scramble the timestamp.

      From Yuchung Cheng.

   3) Add TCP_NOTSENT_LOWAT socket option to limit the amount of kernel
      memory consumed to queue up unsend user data.  From Eric Dumazet.

   4) Add a "physical port ID" abstraction for network devices, from
      Jiri Pirko.

   5) Add a "suppress" operation to influence fib_rules lookups, from
      Stefan Tomanek.

   6) Add a networking development FAQ, from Paul Gortmaker.

   7) Extend the information provided by tcp_probe and add ipv6 support,
      from Daniel Borkmann.

   8) Use RCU locking more extensively in openvswitch data paths, from
      Pravin B Shelar.

   9) Add SCTP support to openvswitch, from Joe Stringer.

  10) Add EF10 chip support to SFC driver, from Ben Hutchings.

  11) Add new SYNPROXY netfilter target, from Patrick McHardy.

  12) Compute a rate approximation for sending in TCP sockets, and use
      this to more intelligently coalesce TSO frames.  Furthermore, add
      a new packet scheduler which takes advantage of this estimate when
      available.  From Eric Dumazet.

  13) Allow AF_PACKET fanouts with random selection, from Daniel
      Borkmann.

  14) Add ipv6 support to vxlan driver, from Cong Wang"

Resolved conflicts as per discussion.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1218 commits)
  openvswitch: Fix alignment of struct sw_flow_key.
  netfilter: Fix build errors with xt_socket.c
  tcp: Add missing braces to do_tcp_setsockopt
  caif: Add missing braces to multiline if in cfctrl_linkup_request
  bnx2x: Add missing braces in bnx2x:bnx2x_link_initialize
  vxlan: Fix kernel panic on device delete.
  net: mvneta: implement ->ndo_do_ioctl() to support PHY ioctls
  net: mvneta: properly disable HW PHY polling and ensure adjust_link() works
  icplus: Use netif_running to determine device state
  ethernet/arc/arc_emac: Fix huge delays in large file copies
  tuntap: orphan frags before trying to set tx timestamp
  tuntap: purge socket error queue on detach
  qlcnic: use standard NAPI weights
  ipv6:introduce function to find route for redirect
  bnx2x: VF RSS support - VF side
  bnx2x: VF RSS support - PF side
  vxlan: Notify drivers for listening UDP port changes
  net: usbnet: update addr_assign_type if appropriate
  driver/net: enic: update enic maintainers and driver
  driver/net: enic: Exposing symbols for Cisco's low latency driver
  ...

1 files changed, 58 insertions, 0 deletions

diff --git a/net/batman-adv/main.c b/net/batman-adv/main.c
index 08125f3f6064..c72d1bcdcf49 100644
--- a/net/batman-adv/main.c
+++ b/net/batman-adv/main.c
@@ -19,6 +19,10 @@
 
 #include <linux/crc32c.h>
 #include <linux/highmem.h>
+#include <linux/if_vlan.h>
+#include <net/ip.h>
+#include <net/ipv6.h>
+#include <net/dsfield.h>
 #include "main.h"
 #include "sysfs.h"
 #include "debugfs.h"
@@ -249,6 +253,60 @@ out:
 	return primary_if;
 }
 
+/**
+ * batadv_skb_set_priority - sets skb priority according to packet content
+ * @skb: the packet to be sent
+ * @offset: offset to the packet content
+ *
+ * This function sets a value between 256 and 263 (802.1d priority), which
+ * can be interpreted by the cfg80211 or other drivers.
+ */
+void batadv_skb_set_priority(struct sk_buff *skb, int offset)
+{
+	struct iphdr ip_hdr_tmp, *ip_hdr;
+	struct ipv6hdr ip6_hdr_tmp, *ip6_hdr;
+	struct ethhdr ethhdr_tmp, *ethhdr;
+	struct vlan_ethhdr *vhdr, vhdr_tmp;
+	u32 prio;
+
+	/* already set, do nothing */
+	if (skb->priority >= 256 && skb->priority <= 263)
+		return;
+
+	ethhdr = skb_header_pointer(skb, offset, sizeof(*ethhdr), &ethhdr_tmp);
+	if (!ethhdr)
+		return;
+
+	switch (ethhdr->h_proto) {
+	case htons(ETH_P_8021Q):
+		vhdr = skb_header_pointer(skb, offset + sizeof(*vhdr),
+					  sizeof(*vhdr), &vhdr_tmp);
+		if (!vhdr)
+			return;
+		prio = ntohs(vhdr->h_vlan_TCI) & VLAN_PRIO_MASK;
+		prio = prio >> VLAN_PRIO_SHIFT;
+		break;
+	case htons(ETH_P_IP):
+		ip_hdr = skb_header_pointer(skb, offset + sizeof(*ethhdr),
+					    sizeof(*ip_hdr), &ip_hdr_tmp);
+		if (!ip_hdr)
+			return;
+		prio = (ipv4_get_dsfield(ip_hdr) & 0xfc) >> 5;
+		break;
+	case htons(ETH_P_IPV6):
+		ip6_hdr = skb_header_pointer(skb, offset + sizeof(*ethhdr),
+					     sizeof(*ip6_hdr), &ip6_hdr_tmp);
+		if (!ip6_hdr)
+			return;
+		prio = (ipv6_get_dsfield(ip6_hdr) & 0xfc) >> 5;
+		break;
+	default:
+		return;
+	}
+
+	skb->priority = prio + 256;
+}
+
 static int batadv_recv_unhandled_packet(struct sk_buff *skb,
 					struct batadv_hard_iface *recv_if)
 {