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

Pull networking updates from David Miller:
 "Highlights:

   1) Support TX_RING in AF_PACKET TPACKET_V3 mode, from Sowmini
      Varadhan.

   2) Simplify classifier state on sk_buff in order to shrink it a bit.
      From Willem de Bruijn.

   3) Introduce SIPHASH and it's usage for secure sequence numbers and
      syncookies. From Jason A. Donenfeld.

   4) Reduce CPU usage for ICMP replies we are going to limit or
      suppress, from Jesper Dangaard Brouer.

   5) Introduce Shared Memory Communications socket layer, from Ursula
      Braun.

   6) Add RACK loss detection and allow it to actually trigger fast
      recovery instead of just assisting after other algorithms have
      triggered it. From Yuchung Cheng.

   7) Add xmit_more and BQL support to mvneta driver, from Simon Guinot.

   8) skb_cow_data avoidance in esp4 and esp6, from Steffen Klassert.

   9) Export MPLS packet stats via netlink, from Robert Shearman.

  10) Significantly improve inet port bind conflict handling, especially
      when an application is restarted and changes it's setting of
      reuseport. From Josef Bacik.

  11) Implement TX batching in vhost_net, from Jason Wang.

  12) Extend the dummy device so that VF (virtual function) features,
      such as configuration, can be more easily tested. From Phil
      Sutter.

  13) Avoid two atomic ops per page on x86 in bnx2x driver, from Eric
      Dumazet.

  14) Add new bpf MAP, implementing a longest prefix match trie. From
      Daniel Mack.

  15) Packet sample offloading support in mlxsw driver, from Yotam Gigi.

  16) Add new aquantia driver, from David VomLehn.

  17) Add bpf tracepoints, from Daniel Borkmann.

  18) Add support for port mirroring to b53 and bcm_sf2 drivers, from
      Florian Fainelli.

  19) Remove custom busy polling in many drivers, it is done in the core
      networking since 4.5 times. From Eric Dumazet.

  20) Support XDP adjust_head in virtio_net, from John Fastabend.

  21) Fix several major holes in neighbour entry confirmation, from
      Julian Anastasov.

  22) Add XDP support to bnxt_en driver, from Michael Chan.

  23) VXLAN offloads for enic driver, from Govindarajulu Varadarajan.

  24) Add IPVTAP driver (IP-VLAN based tap driver) from Sainath Grandhi.

  25) Support GRO in IPSEC protocols, from Steffen Klassert"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1764 commits)
  Revert "ath10k: Search SMBIOS for OEM board file extension"
  net: socket: fix recvmmsg not returning error from sock_error
  bnxt_en: use eth_hw_addr_random()
  bpf: fix unlocking of jited image when module ronx not set
  arch: add ARCH_HAS_SET_MEMORY config
  net: napi_watchdog() can use napi_schedule_irqoff()
  tcp: Revert "tcp: tcp_probe: use spin_lock_bh()"
  net/hsr: use eth_hw_addr_random()
  net: mvpp2: enable building on 64-bit platforms
  net: mvpp2: switch to build_skb() in the RX path
  net: mvpp2: simplify MVPP2_PRS_RI_* definitions
  net: mvpp2: fix indentation of MVPP2_EXT_GLOBAL_CTRL_DEFAULT
  net: mvpp2: remove unused register definitions
  net: mvpp2: simplify mvpp2_bm_bufs_add()
  net: mvpp2: drop useless fields in mvpp2_bm_pool and related code
  net: mvpp2: remove unused 'tx_skb' field of 'struct mvpp2_tx_queue'
  net: mvpp2: release reference to txq_cpu[] entry after unmapping
  net: mvpp2: handle too large value in mvpp2_rx_time_coal_set()
  net: mvpp2: handle too large value handling in mvpp2_rx_pkts_coal_set()
  net: mvpp2: remove useless arguments in mvpp2_rx_{pkts, time}_coal_set
  ...

1 files changed, 294 insertions, 0 deletions

diff --git a/net/bridge/br_netlink_tunnel.c b/net/bridge/br_netlink_tunnel.c
new file mode 100644
index 000000000000..c913491495ab
--- /dev/null
+++ b/net/bridge/br_netlink_tunnel.c
@@ -0,0 +1,294 @@
+/*
+ *	Bridge per vlan tunnel port dst_metadata netlink control interface
+ *
+ *	Authors:
+ *	Roopa Prabhu		<roopa@cumulusnetworks.com>
+ *
+ *	This program is free software; you can redistribute it and/or
+ *	modify it under the terms of the GNU General Public License
+ *	as published by the Free Software Foundation; either version
+ *	2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/etherdevice.h>
+#include <net/rtnetlink.h>
+#include <net/net_namespace.h>
+#include <net/sock.h>
+#include <uapi/linux/if_bridge.h>
+#include <net/dst_metadata.h>
+
+#include "br_private.h"
+#include "br_private_tunnel.h"
+
+static size_t __get_vlan_tinfo_size(void)
+{
+	return nla_total_size(0) + /* nest IFLA_BRIDGE_VLAN_TUNNEL_INFO */
+		  nla_total_size(sizeof(u32)) + /* IFLA_BRIDGE_VLAN_TUNNEL_ID */
+		  nla_total_size(sizeof(u16)) + /* IFLA_BRIDGE_VLAN_TUNNEL_VID */
+		  nla_total_size(sizeof(u16)); /* IFLA_BRIDGE_VLAN_TUNNEL_FLAGS */
+}
+
+static bool vlan_tunid_inrange(struct net_bridge_vlan *v_curr,
+			       struct net_bridge_vlan *v_last)
+{
+	__be32 tunid_curr = tunnel_id_to_key32(v_curr->tinfo.tunnel_id);
+	__be32 tunid_last = tunnel_id_to_key32(v_last->tinfo.tunnel_id);
+
+	return (be32_to_cpu(tunid_curr) - be32_to_cpu(tunid_last)) == 1;
+}
+
+static int __get_num_vlan_tunnel_infos(struct net_bridge_vlan_group *vg)
+{
+	struct net_bridge_vlan *v, *vtbegin = NULL, *vtend = NULL;
+	int num_tinfos = 0;
+
+	/* Count number of vlan infos */
+	list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
+		/* only a context, bridge vlan not activated */
+		if (!br_vlan_should_use(v) || !v->tinfo.tunnel_id)
+			continue;
+
+		if (!vtbegin) {
+			goto initvars;
+		} else if ((v->vid - vtend->vid) == 1 &&
+			   vlan_tunid_inrange(v, vtend)) {
+			vtend = v;
+			continue;
+		} else {
+			if ((vtend->vid - vtbegin->vid) > 0)
+				num_tinfos += 2;
+			else
+				num_tinfos += 1;
+		}
+initvars:
+		vtbegin = v;
+		vtend = v;
+	}
+
+	if (vtbegin && vtend) {
+		if ((vtend->vid - vtbegin->vid) > 0)
+			num_tinfos += 2;
+		else
+			num_tinfos += 1;
+	}
+
+	return num_tinfos;
+}
+
+int br_get_vlan_tunnel_info_size(struct net_bridge_vlan_group *vg)
+{
+	int num_tinfos;
+
+	if (!vg)
+		return 0;
+
+	rcu_read_lock();
+	num_tinfos = __get_num_vlan_tunnel_infos(vg);
+	rcu_read_unlock();
+
+	return num_tinfos * __get_vlan_tinfo_size();
+}
+
+static int br_fill_vlan_tinfo(struct sk_buff *skb, u16 vid,
+			      __be64 tunnel_id, u16 flags)
+{
+	__be32 tid = tunnel_id_to_key32(tunnel_id);
+	struct nlattr *tmap;
+
+	tmap = nla_nest_start(skb, IFLA_BRIDGE_VLAN_TUNNEL_INFO);
+	if (!tmap)
+		return -EMSGSIZE;
+	if (nla_put_u32(skb, IFLA_BRIDGE_VLAN_TUNNEL_ID,
+			be32_to_cpu(tid)))
+		goto nla_put_failure;
+	if (nla_put_u16(skb, IFLA_BRIDGE_VLAN_TUNNEL_VID,
+			vid))
+		goto nla_put_failure;
+	if (nla_put_u16(skb, IFLA_BRIDGE_VLAN_TUNNEL_FLAGS,
+			flags))
+		goto nla_put_failure;
+	nla_nest_end(skb, tmap);
+
+	return 0;
+
+nla_put_failure:
+	nla_nest_cancel(skb, tmap);
+
+	return -EMSGSIZE;
+}
+
+static int br_fill_vlan_tinfo_range(struct sk_buff *skb,
+				    struct net_bridge_vlan *vtbegin,
+				    struct net_bridge_vlan *vtend)
+{
+	int err;
+
+	if (vtend && (vtend->vid - vtbegin->vid) > 0) {
+		/* add range to skb */
+		err = br_fill_vlan_tinfo(skb, vtbegin->vid,
+					 vtbegin->tinfo.tunnel_id,
+					 BRIDGE_VLAN_INFO_RANGE_BEGIN);
+		if (err)
+			return err;
+
+		err = br_fill_vlan_tinfo(skb, vtend->vid,
+					 vtend->tinfo.tunnel_id,
+					 BRIDGE_VLAN_INFO_RANGE_END);
+		if (err)
+			return err;
+	} else {
+		err = br_fill_vlan_tinfo(skb, vtbegin->vid,
+					 vtbegin->tinfo.tunnel_id,
+					 0);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+int br_fill_vlan_tunnel_info(struct sk_buff *skb,
+			     struct net_bridge_vlan_group *vg)
+{
+	struct net_bridge_vlan *vtbegin = NULL;
+	struct net_bridge_vlan *vtend = NULL;
+	struct net_bridge_vlan *v;
+	int err;
+
+	/* Count number of vlan infos */
+	list_for_each_entry_rcu(v, &vg->vlan_list, vlist) {
+		/* only a context, bridge vlan not activated */
+		if (!br_vlan_should_use(v))
+			continue;
+
+		if (!v->tinfo.tunnel_dst)
+			continue;
+
+		if (!vtbegin) {
+			goto initvars;
+		} else if ((v->vid - vtend->vid) == 1 &&
+			    vlan_tunid_inrange(v, vtend)) {
+			vtend = v;
+			continue;
+		} else {
+			err = br_fill_vlan_tinfo_range(skb, vtbegin, vtend);
+			if (err)
+				return err;
+		}
+initvars:
+		vtbegin = v;
+		vtend = v;
+	}
+
+	if (vtbegin) {
+		err = br_fill_vlan_tinfo_range(skb, vtbegin, vtend);
+		if (err)
+			return err;
+	}
+
+	return 0;
+}
+
+static const struct nla_policy vlan_tunnel_policy[IFLA_BRIDGE_VLAN_TUNNEL_MAX + 1] = {
+	[IFLA_BRIDGE_VLAN_TUNNEL_ID] = { .type = NLA_U32 },
+	[IFLA_BRIDGE_VLAN_TUNNEL_VID] = { .type = NLA_U16 },
+	[IFLA_BRIDGE_VLAN_TUNNEL_FLAGS] = { .type = NLA_U16 },
+};
+
+static int br_vlan_tunnel_info(struct net_bridge_port *p, int cmd,
+			       u16 vid, u32 tun_id)
+{
+	int err = 0;
+
+	if (!p)
+		return -EINVAL;
+
+	switch (cmd) {
+	case RTM_SETLINK:
+		err = nbp_vlan_tunnel_info_add(p, vid, tun_id);
+		break;
+	case RTM_DELLINK:
+		nbp_vlan_tunnel_info_delete(p, vid);
+		break;
+	}
+
+	return err;
+}
+
+int br_parse_vlan_tunnel_info(struct nlattr *attr,
+			      struct vtunnel_info *tinfo)
+{
+	struct nlattr *tb[IFLA_BRIDGE_VLAN_TUNNEL_MAX + 1];
+	u32 tun_id;
+	u16 vid, flags = 0;
+	int err;
+
+	memset(tinfo, 0, sizeof(*tinfo));
+
+	err = nla_parse_nested(tb, IFLA_BRIDGE_VLAN_TUNNEL_MAX,
+			       attr, vlan_tunnel_policy);
+	if (err < 0)
+		return err;
+
+	if (!tb[IFLA_BRIDGE_VLAN_TUNNEL_ID] ||
+	    !tb[IFLA_BRIDGE_VLAN_TUNNEL_VID])
+		return -EINVAL;
+
+	tun_id = nla_get_u32(tb[IFLA_BRIDGE_VLAN_TUNNEL_ID]);
+	vid = nla_get_u16(tb[IFLA_BRIDGE_VLAN_TUNNEL_VID]);
+	if (vid >= VLAN_VID_MASK)
+		return -ERANGE;
+
+	if (tb[IFLA_BRIDGE_VLAN_TUNNEL_FLAGS])
+		flags = nla_get_u16(tb[IFLA_BRIDGE_VLAN_TUNNEL_FLAGS]);
+
+	tinfo->tunid = tun_id;
+	tinfo->vid = vid;
+	tinfo->flags = flags;
+
+	return 0;
+}
+
+int br_process_vlan_tunnel_info(struct net_bridge *br,
+				struct net_bridge_port *p, int cmd,
+				struct vtunnel_info *tinfo_curr,
+				struct vtunnel_info *tinfo_last)
+{
+	int err;
+
+	if (tinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN) {
+		if (tinfo_last->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN)
+			return -EINVAL;
+		memcpy(tinfo_last, tinfo_curr, sizeof(struct vtunnel_info));
+	} else if (tinfo_curr->flags & BRIDGE_VLAN_INFO_RANGE_END) {
+		int t, v;
+
+		if (!(tinfo_last->flags & BRIDGE_VLAN_INFO_RANGE_BEGIN))
+			return -EINVAL;
+		if ((tinfo_curr->vid - tinfo_last->vid) !=
+		    (tinfo_curr->tunid - tinfo_last->tunid))
+			return -EINVAL;
+		t = tinfo_last->tunid;
+		for (v = tinfo_last->vid; v <= tinfo_curr->vid; v++) {
+			err = br_vlan_tunnel_info(p, cmd, v, t);
+			if (err)
+				return err;
+			t++;
+		}
+		memset(tinfo_last, 0, sizeof(struct vtunnel_info));
+		memset(tinfo_curr, 0, sizeof(struct vtunnel_info));
+	} else {
+		if (tinfo_last->flags)
+			return -EINVAL;
+		err = br_vlan_tunnel_info(p, cmd, tinfo_curr->vid,
+					  tinfo_curr->tunid);
+		if (err)
+			return err;
+		memset(tinfo_last, 0, sizeof(struct vtunnel_info));
+		memset(tinfo_curr, 0, sizeof(struct vtunnel_info));
+	}
+
+	return 0;
+}