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#!/bin/bash

set -eu

cd ../../build-root
echo "make distclean..."
make distclean > /dev/null 2>&1
# make sure we don't trip over a symbolic link later
rm -f .ccache
cd ../
echo "construct source tarball..."
tar -zcf extras/snap/vpp.tgz --exclude=extras/snap/vpp.tgz .
exit 0
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/*
 * Copyright (c) 2016 Cisco and/or its affiliates.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at:
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef included_vnet_handoff_h
#define included_vnet_handoff_h

#include <vlib/vlib.h>
#include <vnet/ethernet/ethernet.h>
#include <vnet/ip/ip4_packet.h>
#include <vnet/ip/ip6_packet.h>
#include <vnet/mpls/packet.h>

static inline u64
ipv4_get_key (ip4_header_t * ip)
{
  u64 hash_key;

  hash_key = *((u64 *) (&ip->address_pair)) ^ ip->protocol;

  return hash_key;
}

static inline u64
ipv6_get_key (ip6_header_t * ip)
{
  u64 hash_key;

  hash_key = ip->src_address.as_u64[0] ^
    rotate_left (ip->src_address.as_u64[1], 13) ^
    rotate_left (ip->dst_address.as_u64[0], 26) ^
    rotate_left (ip->dst_address.as_u64[1], 39) ^ ip->protocol;

  return hash_key;
}

#define MPLS_BOTTOM_OF_STACK_BIT_MASK   0x00000100U
#define MPLS_LABEL_MASK                 0xFFFFF000U

static inline u64
mpls_get_key (mpls_unicast_header_t * m)
{
  u64 hash_key;
  u8 ip_ver;


  /* find the bottom of the MPLS label stack. */
  if (PREDICT_TRUE (m->label_exp_s_ttl &
		    clib_net_to_host_u32 (MPLS_BOTTOM_OF_STACK_BIT_MASK)))
    {
      goto bottom_lbl_found;
    }
  m++;

  if (PREDICT_TRUE (m->label_exp_s_ttl &
		    clib_net_to_host_u32 (MPLS_BOTTOM_OF_STACK_BIT_MASK)))
    {
      goto bottom_lbl_found;
    }
  m++;

  if (m->label_exp_s_ttl &
      clib_net_to_host_u32 (MPLS_BOTTOM_OF_STACK_BIT_MASK))
    {
      goto bottom_lbl_found;
    }
  m++;

  if (m->label_exp_s_ttl &
      clib_net_to_host_u32 (MPLS_BOTTOM_OF_STACK_BIT_MASK))
    {
      goto bottom_lbl_found;
    }
  m++;

  if (m->label_exp_s_ttl &
      clib_net_to_host_u32 (MPLS_BOTTOM_OF_STACK_BIT_MASK))
    {
      goto bottom_lbl_found;
    }

  /* the bottom label was not found - use the last label */
  hash_key = m->label_exp_s_ttl & clib_net_to_host_u32 (MPLS_LABEL_MASK);

  return hash_key;

bottom_lbl_found:
  m++;
  ip_ver = (*((u8 *) m) >> 4);

  /* find out if it is IPV4 or IPV6 header */
  if (PREDICT_TRUE (ip_ver == 4))
    {
      hash_key = ipv4_get_key ((ip4_header_t *) m);
    }
  else if (PREDICT_TRUE (ip_ver == 6))
    {
      hash_key = ipv6_get_key ((ip6_header_t *) m);
    }
  else
    {
      /* use the bottom label */
      hash_key =
	(m - 1)->label_exp_s_ttl & clib_net_to_host_u32 (MPLS_LABEL_MASK);
    }

  return hash_key;

}

static inline u64
eth_get_sym_key (ethernet_header_t * h0)
{
  u64 hash_key;

  if (PREDICT_TRUE (h0->type) == clib_host_to_net_u16 (ETHERNET_TYPE_IP4))
    {
      ip4_header_t *ip = (ip4_header_t *) (h0 + 1);
      hash_key =
	(u64) (ip->src_address.as_u32 ^
	       ip->dst_address.as_u32 ^ ip->protocol);
    }
  else if (h0->type == clib_host_to_net_u16 (ETHERNET_TYPE_IP6))
    {
      ip6_header_t *ip = (ip6_header_t *) (h0 + 1);
      hash_key = (u64) (ip->src_address.as_u64[0] ^
			ip->src_address.as_u64[1] ^
			ip->dst_address.as_u64[0] ^
			ip->dst_address.as_u64[1] ^ ip->protocol);
    }
  else if (h0->type == clib_host_to_net_u16 (ETHERNET_TYPE_MPLS))
    {
      hash_key = mpls_get_key ((mpls_unicast_header_t *) (h0 + 1));
    }
  else
    if (PREDICT_FALSE
	((h0->type == clib_host_to_net_u16 (ETHERNET_TYPE_VLAN))
	 || (h0->type == clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD))))
    {
      ethernet_vlan_header_t *outer = (ethernet_vlan_header_t *) (h0 + 1);

      outer = (outer->type == clib_host_to_net_u16 (ETHERNET_TYPE_VLAN)) ?
	outer + 1 : outer;
      if (PREDICT_TRUE (outer->type) ==
	  clib_host_to_net_u16 (ETHERNET_TYPE_IP4))
	{
	  ip4_header_t *ip = (ip4_header_t *) (outer + 1);
	  hash_key =
	    (u64) (ip->src_address.as_u32 ^
		   ip->dst_address.as_u32 ^ ip->protocol);
	}
      else if (outer->type == clib_host_to_net_u16 (ETHERNET_TYPE_IP6))
	{
	  ip6_header_t *ip = (ip6_header_t *) (outer + 1);
	  hash_key =
	    (u64) (ip->src_address.as_u64[0] ^ ip->src_address.as_u64[1] ^
		   ip->dst_address.as_u64[0] ^
		   ip->dst_address.as_u64[1] ^ ip->protocol);
	}
      else if (outer->type == clib_host_to_net_u16 (ETHERNET_TYPE_MPLS))
	{
	  hash_key = mpls_get_key ((mpls_unicast_header_t *) (outer + 1));
	}
      else
	{
	  hash_key = outer->type;
	}
    }
  else
    {
      hash_key = 0;
    }

  return hash_key;
}

static inline u64
eth_get_key (ethernet_header_t * h0)
{
  u64 hash_key;

  if (PREDICT_TRUE (h0->type) == clib_host_to_net_u16 (ETHERNET_TYPE_IP4))
    {
      hash_key = ipv4_get_key ((ip4_header_t *) (h0 + 1));
    }
  else if (h0->type == clib_host_to_net_u16 (ETHERNET_TYPE_IP6))
    {
      hash_key = ipv6_get_key ((ip6_header_t *) (h0 + 1));
    }
  else if (h0->type == clib_host_to_net_u16 (ETHERNET_TYPE_MPLS))
    {
      hash_key = mpls_get_key ((mpls_unicast_header_t *) (h0 + 1));
    }
  else if ((h0->type == clib_host_to_net_u16 (ETHERNET_TYPE_VLAN)) ||
	   (h0->type == clib_host_to_net_u16 (ETHERNET_TYPE_DOT1AD)))
    {
      ethernet_vlan_header_t *outer = (ethernet_vlan_header_t *) (h0 + 1);

      outer = (outer->type == clib_host_to_net_u16 (ETHERNET_TYPE_VLAN)) ?
	outer + 1 : outer;
      if (PREDICT_TRUE (outer->type) ==
	  clib_host_to_net_u16 (ETHERNET_TYPE_IP4))
	{
	  hash_key = ipv4_get_key ((ip4_header_t *) (outer + 1));
	}
      else if (outer->type == clib_host_to_net_u16 (ETHERNET_TYPE_IP6))
	{
	  hash_key = ipv6_get_key ((ip6_header_t *) (outer + 1));
	}
      else if (outer->type == clib_host_to_net_u16 (ETHERNET_TYPE_MPLS))
	{
	  hash_key = mpls_get_key ((mpls_unicast_header_t *) (outer + 1));
	}
      else
	{
	  hash_key = outer->type;
	}
    }
  else
    {
      hash_key = 0;
    }

  return hash_key;
}

#endif /* included_vnet_handoff_h */

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */