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https://github.com/zephyrproject-rtos/zephyr
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4aad767328
- Introduce NET_LINK_ADDR_MAX_LENGTH which is either 6 or 8 depending on whether CONFIG_NET_L2_IEEE802154 is used - Instead of being a placeholder single index array of uint8_t, let's use NET_LINK_ADDR_MAX_LENGTH to assign the size of the "addr" array field in the net_linkaddr_storage structure. - Now that the "addr" field of net_linkaddr_storage contains the true size of the link address, we can remove "storage" field which was hard coded to 8 bytes (2 uint32_t's). - Fix 2 references to the "storage" field of the net_linkaddr_storage structure. Change-Id: I2ea12058280b289f65085964eb7d503d4fd260c2 Signed-off-by: Michael Scott <michael.scott@linaro.org>
86 lines
1.7 KiB
C
86 lines
1.7 KiB
C
/*
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* Copyright (c) 2016 Intel Corporation.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief Public API for network link address
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*/
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#ifndef __NET_LINKADDR_H__
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#define __NET_LINKADDR_H__
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#include <stdint.h>
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#include <stdbool.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef CONFIG_NET_L2_IEEE802154
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#define NET_LINK_ADDR_MAX_LENGTH 8
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#else
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#define NET_LINK_ADDR_MAX_LENGTH 6
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#endif
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/**
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* @brief Hardware link address structure
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*
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* Used to hold the link address information
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*/
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struct net_linkaddr {
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/** The array of byte representing the address */
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uint8_t *addr;
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/** Length of that address array */
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uint8_t len;
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};
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/**
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* @brief Hardware link address structure
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*
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* Used to hold the link address information. This variant is needed
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* when we have to store the link layer address.
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*
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* Note that you cannot cast this to net_linkaddr as uint8_t * is
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* handled differently than uint8_t addr[] and the fields are purposely
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* in a different order.
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*/
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struct net_linkaddr_storage {
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/** The real length of the ll address. */
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uint8_t len;
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/** The array of bytes representing the address */
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uint8_t addr[NET_LINK_ADDR_MAX_LENGTH];
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};
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/**
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* @brief Compare two link layer addresses.
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*
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* @param lladdr1 Pointer to a link layer address
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* @param lladdr2 Pointer to a link layer address
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*
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* @return True if the addresses are the same, false otherwise.
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*/
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static inline bool net_linkaddr_cmp(struct net_linkaddr *lladdr1,
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struct net_linkaddr *lladdr2)
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{
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if (!lladdr1 || !lladdr2) {
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return false;
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}
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if (lladdr1->len != lladdr2->len) {
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return false;
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}
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return !memcmp(lladdr1->addr, lladdr2->addr, lladdr1->len);
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* __NET_LINKADDR_H__ */
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