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Commit | Line | Data |
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db9ecf05 | 1 | /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
d8500c53 TG |
2 | #pragma once |
3 | ||
4fc8a29a | 4 | #include <linux/if_infiniband.h> |
d8500c53 | 5 | #include <net/ethernet.h> |
b553a6b1 | 6 | #include <stdbool.h> |
d8500c53 | 7 | |
583706ab | 8 | #include "hash-funcs.h" |
76a5d3de | 9 | #include "in-addr-util.h" |
1f86a3fe YW |
10 | #include "macro.h" |
11 | #include "memory-util.h" | |
583706ab | 12 | |
4fc8a29a TR |
13 | /* This is MAX_ADDR_LEN as defined in linux/netdevice.h, but net/if_arp.h |
14 | * defines a macro of the same name with a much lower size. */ | |
15 | #define HW_ADDR_MAX_SIZE 32 | |
16 | ||
ca2b7cd8 | 17 | struct hw_addr_data { |
4fc8a29a | 18 | size_t length; |
ca2b7cd8 YW |
19 | union { |
20 | struct ether_addr ether; | |
21 | uint8_t infiniband[INFINIBAND_ALEN]; | |
76a5d3de YW |
22 | struct in_addr in; |
23 | struct in6_addr in6; | |
ca2b7cd8 YW |
24 | uint8_t bytes[HW_ADDR_MAX_SIZE]; |
25 | }; | |
26 | }; | |
4fc8a29a | 27 | |
76a5d3de YW |
28 | int parse_hw_addr_full(const char *s, size_t expected_len, struct hw_addr_data *ret); |
29 | static inline int parse_hw_addr(const char *s, struct hw_addr_data *ret) { | |
30 | return parse_hw_addr_full(s, 0, ret); | |
31 | } | |
02160bc9 | 32 | int parse_ether_addr(const char *s, struct ether_addr *ret); |
76a5d3de | 33 | |
4fc8a29a | 34 | #define HW_ADDR_TO_STRING_MAX (3*HW_ADDR_MAX_SIZE) |
ca2b7cd8 | 35 | char* hw_addr_to_string(const struct hw_addr_data *addr, char buffer[HW_ADDR_TO_STRING_MAX]); |
4fc8a29a | 36 | |
e265fa81 ZJS |
37 | /* Note: the lifetime of the compound literal is the immediately surrounding block, |
38 | * see C11 §6.5.2.5, and | |
39 | * https://stackoverflow.com/questions/34880638/compound-literal-lifetime-and-if-blocks */ | |
4fc8a29a TR |
40 | #define HW_ADDR_TO_STR(hw_addr) hw_addr_to_string((hw_addr), (char[HW_ADDR_TO_STRING_MAX]){}) |
41 | ||
ca2b7cd8 | 42 | #define HW_ADDR_NULL ((const struct hw_addr_data){}) |
4fc8a29a | 43 | |
30b97725 YW |
44 | int hw_addr_compare(const struct hw_addr_data *a, const struct hw_addr_data *b); |
45 | static inline bool hw_addr_equal(const struct hw_addr_data *a, const struct hw_addr_data *b) { | |
46 | return hw_addr_compare(a, b) == 0; | |
47 | } | |
48 | static inline bool hw_addr_is_null(const struct hw_addr_data *addr) { | |
de0f1579 YW |
49 | assert(addr); |
50 | return addr->length == 0 || memeqzero(addr->bytes, addr->length); | |
30b97725 YW |
51 | } |
52 | ||
907d5ce4 | 53 | extern const struct hash_ops hw_addr_hash_ops; |
c6df73ca | 54 | extern const struct hash_ops hw_addr_hash_ops_free; |
907d5ce4 | 55 | |
d8500c53 TG |
56 | #define ETHER_ADDR_FORMAT_STR "%02X%02X%02X%02X%02X%02X" |
57 | #define ETHER_ADDR_FORMAT_VAL(x) (x).ether_addr_octet[0], (x).ether_addr_octet[1], (x).ether_addr_octet[2], (x).ether_addr_octet[3], (x).ether_addr_octet[4], (x).ether_addr_octet[5] | |
81a56d6f LP |
58 | |
59 | #define ETHER_ADDR_TO_STRING_MAX (3*6) | |
81a56d6f | 60 | char* ether_addr_to_string(const struct ether_addr *addr, char buffer[ETHER_ADDR_TO_STRING_MAX]); |
ae8e3c2b | 61 | int ether_addr_to_string_alloc(const struct ether_addr *addr, char **ret); |
4b574fd8 YW |
62 | /* Use only as function argument, never stand-alone! */ |
63 | #define ETHER_ADDR_TO_STR(addr) ether_addr_to_string((addr), (char[ETHER_ADDR_TO_STRING_MAX]){}) | |
b553a6b1 | 64 | |
7a08d314 | 65 | int ether_addr_compare(const struct ether_addr *a, const struct ether_addr *b); |
583706ab YW |
66 | static inline bool ether_addr_equal(const struct ether_addr *a, const struct ether_addr *b) { |
67 | return ether_addr_compare(a, b) == 0; | |
68 | } | |
6b0132e4 ZJS |
69 | |
70 | #define ETHER_ADDR_NULL ((const struct ether_addr){}) | |
71 | ||
72 | static inline bool ether_addr_is_null(const struct ether_addr *addr) { | |
73 | return ether_addr_equal(addr, ÐER_ADDR_NULL); | |
74 | } | |
dd4d201a | 75 | |
1f86a3fe YW |
76 | static inline bool ether_addr_is_broadcast(const struct ether_addr *addr) { |
77 | assert(addr); | |
78 | return memeqbyte(0xff, addr->ether_addr_octet, ETH_ALEN); | |
79 | } | |
80 | ||
81 | static inline bool ether_addr_is_multicast(const struct ether_addr *addr) { | |
82 | assert(addr); | |
83 | return FLAGS_SET(addr->ether_addr_octet[0], 0x01); | |
84 | } | |
85 | ||
86 | static inline bool ether_addr_is_unicast(const struct ether_addr *addr) { | |
87 | return !ether_addr_is_multicast(addr); | |
88 | } | |
89 | ||
90 | static inline bool ether_addr_is_local(const struct ether_addr *addr) { | |
91 | /* Determine if the Ethernet address is locally-assigned one (IEEE 802) */ | |
92 | assert(addr); | |
93 | return !FLAGS_SET(addr->ether_addr_octet[0], 0x02); | |
94 | } | |
95 | ||
583706ab | 96 | extern const struct hash_ops ether_addr_hash_ops; |
c6df73ca | 97 | extern const struct hash_ops ether_addr_hash_ops_free; |