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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.
*/
#ifndef __MAC_ADDRESS_H__
#define __MAC_ADDRESS_H__
#include <vnet/ethernet/ethernet.h>
typedef struct mac_address_t_
{
union
{
u8 bytes[6];
struct
{
u32 first_4;
u16 last_2;
} __clib_packed u;
};
} mac_address_t;
STATIC_ASSERT ((sizeof (mac_address_t) == 6),
"MAC address must represent the on wire format");
extern const mac_address_t ZERO_MAC_ADDRESS;
static_always_inline void
mac_address_from_bytes (mac_address_t * mac, const u8 * bytes)
{
/* zero out the last 2 bytes, then copy over only 6 */
clib_memcpy (mac->bytes, bytes, 6);
}
static_always_inline void
mac_address_to_bytes (const mac_address_t * mac, u8 * bytes)
{
/* zero out the last 2 bytes, then copy over only 6 */
clib_memcpy (bytes, mac->bytes, 6);
}
static_always_inline int
mac_address_is_zero (const mac_address_t * mac)
{
return (0 == mac->u.first_4 && 0 == mac->u.last_2);
}
static_always_inline u64
mac_address_as_u64 (const mac_address_t * mac)
{
u64 *as_u64;
as_u64 = (u64 *) mac->bytes;
return (*as_u64);
}
static_always_inline void
mac_address_from_u64 (u64 u, mac_address_t * mac)
{
clib_memcpy (mac->bytes, &u, 6);
}
static_always_inline void
mac_address_copy (mac_address_t * dst, const mac_address_t * src)
{
mac_address_from_bytes (dst, src->bytes);
}
extern uword unformat_mac_address_t (unformat_input_t * input,
va_list * args);
extern u8 *format_mac_address_t (u8 * s, va_list * args);
#endif
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/
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