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in-addr-util: introduce PTR_TO_IN4_ADDR() and IN4_ADDR_TO_PTR()

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These should be useful when an IPv4 address is used as a key of a
hashmap.
This commit is contained in:
Yu Watanabe
2023-07-08 12:23:27 +09:00
parent 626d653a90
commit 9701be563a
1 changed files with 10 additions and 0 deletions
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10
src/basic/in-addr-util.h
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@@ -195,6 +195,16 @@ extern const struct hash_ops in_addr_data_hash_ops_free;
extern const struct hash_ops in6_addr_hash_ops;
extern const struct hash_ops in6_addr_hash_ops_free;
static inline void PTR_TO_IN4_ADDR(const void *p, struct in_addr *ret) {
assert(ret);
ret->s_addr = (uint32_t) ((uintptr_t) p);
}
static inline void* IN4_ADDR_TO_PTR(const struct in_addr *a) {
assert(a);
return (void*) ((uintptr_t) a->s_addr);
}
#define IPV4_ADDRESS_FMT_STR "%u.%u.%u.%u"
#define IPV4_ADDRESS_FMT_VAL(address) \
be32toh((address).s_addr) >> 24, \