Martin Casado
42 lines
1.0 KiB
C
42 lines
1.0 KiB
C
#ifndef MAC_H
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#define MAC_H 1
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#include <string.h>
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#include <inttypes.h>
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#include <stdbool.h>
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#include "packets.h"
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static inline bool mac_is_multicast(const uint8_t mac[ETH_ADDR_LEN])
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{
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return mac[0] & 0x80;
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}
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static inline bool mac_is_private(const uint8_t mac[ETH_ADDR_LEN])
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{
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return mac[0] & 0x40;
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}
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static inline bool mac_is_broadcast(const uint8_t mac[ETH_ADDR_LEN])
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{
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return (mac[0] & mac[1] & mac[2] & mac[3] & mac[4] & mac[5]) == 0xff;
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}
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static inline bool mac_is_zero(const uint8_t mac[ETH_ADDR_LEN])
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{
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return (mac[0] | mac[1] | mac[2] | mac[3] | mac[4] | mac[5]) == 0;
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}
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static inline bool mac_equals(const uint8_t a[ETH_ADDR_LEN],
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const uint8_t b[ETH_ADDR_LEN])
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{
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return !memcmp(a, b, ETH_ADDR_LEN);
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}
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#define MAC_FMT \
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"%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8":%02"PRIx8
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#define MAC_ARGS(mac) \
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(mac)[0], (mac)[1], (mac)[2], (mac)[3], (mac)[4], (mac)[5]
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#endif /* mac.h */
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