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path: root/src/vnet/ethernet/mac_address.c
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/*
 * Copyright (c) 2018 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.
 */

#include <vnet/ethernet/mac_address.h>

/* *INDENT-OFF* */
const mac_address_t ZERO_MAC_ADDRESS = {
  .bytes = {
    0, 0, 0, 0, 0, 0,
  },
};
/* *INDENT-ON* */

u8 *
format_mac_address_t (u8 * s, va_list * args)
{
  const mac_address_t *mac = va_arg (*args, mac_address_t *);

  return format (s, "%02x:%02x:%02x:%02x:%02x:%02x",
		 mac->bytes[0], mac->bytes[1], mac->bytes[2],
		 mac->bytes[3], mac->bytes[4], mac->bytes[5]);
}

uword
unformat_mac_address_t (unformat_input_t * input, va_list * args)
{
  mac_address_t *mac = va_arg (*args, mac_address_t *);
  u32 i, a[3];

  if (unformat (input, "%_%X:%X:%X:%X:%X:%X%_",
		1, &mac->bytes[0], 1, &mac->bytes[1], 1, &mac->bytes[2],
		1, &mac->bytes[3], 1, &mac->bytes[4], 1, &mac->bytes[5]))
    return (1);
  else if (unformat (input, "%_%x.%x.%x%_", &a[0], &a[1], &a[2]))
    {
      for (i = 0; i < ARRAY_LEN (a); i++)
	if (a[i] >= (1 << 16))
	  return 0;

      mac->bytes[0] = (a[0] >> 8) & 0xff;
      mac->bytes[1] = (a[0] >> 0) & 0xff;
      mac->bytes[2] = (a[1] >> 8) & 0xff;
      mac->bytes[3] = (a[1] >> 0) & 0xff;
      mac->bytes[4] = (a[2] >> 8) & 0xff;
      mac->bytes[5] = (a[2] >> 0) & 0xff;

      return (1);
    }
  return (0);
}

void
mac_address_increment (mac_address_t * mac)
{
  u64 a;

  a = mac_address_as_u64 (mac);
  a++;
  mac_address_from_u64 (mac, a);
}

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