diff options
Diffstat (limited to 'lib/ip.h')
| -rw-r--r-- | lib/ip.h | 161 |
1 files changed, 26 insertions, 135 deletions
@@ -30,6 +30,13 @@ #define IP4_NONE _MI4(0) #define IP6_NONE _MI6(0,0,0,0) +#define IP4_MAX_PREFIX_LENGTH 32 +#define IP6_MAX_PREFIX_LENGTH 128 + +#define IP4_MAX_TEXT_LENGTH 15 /* "255.255.255.255" */ +#define IP6_MAX_TEXT_LENGTH 39 /* "ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff" */ +#define IPA_MAX_TEXT_LENGTH 39 + #define IP4_MIN_MTU 576 #define IP6_MIN_MTU 1280 @@ -40,19 +47,6 @@ #define UDP_HEADER_LENGTH 8 -#ifdef IPV6 -#define MAX_PREFIX_LENGTH 128 -#define BITS_PER_IP_ADDRESS 128 -#define STD_ADDRESS_P_LENGTH 39 -#define SIZE_OF_IP_HEADER 40 -#else -#define MAX_PREFIX_LENGTH 32 -#define BITS_PER_IP_ADDRESS 32 -#define STD_ADDRESS_P_LENGTH 15 -#define SIZE_OF_IP_HEADER 24 -#endif - - #ifdef DEBUGGING typedef struct ip4_addr { @@ -83,8 +77,6 @@ typedef struct ip6_addr { #define _I3(a) ((a).addr[3]) -#ifdef IPV6 - /* Structure ip_addr may contain both IPv4 and IPv6 addresses */ typedef ip6_addr ip_addr; #define IPA_NONE IP6_NONE @@ -99,23 +91,8 @@ typedef ip6_addr ip_addr; #define ipa_is_ip4(a) ip6_is_v4mapped(a) -#else - -/* Provisionary ip_addr definition same as ip4_addr */ -typedef ip4_addr ip_addr; -#define IPA_NONE IP4_NONE - -#define ipa_from_ip4(x) x -#define ipa_from_ip6(x) IPA_NONE -#define ipa_from_u32(x) ipa_from_ip4(ip4_from_u32(x)) - -#define ipa_to_ip4(x) x -#define ipa_to_ip6(x) IP6_NONE -#define ipa_to_u32(x) ip4_to_u32(ipa_to_ip4(x)) - -#define ipa_is_ip4(a) 1 - -#endif +#define IPA_NONE4 ipa_from_ip4(IP4_NONE) +#define IPA_NONE6 ipa_from_ip6(IP6_NONE) /* @@ -180,7 +157,6 @@ static inline ip6_addr ip6_not(ip6_addr a) { return _MI6(~_I0(a), ~_I1(a), ~_I2(a), ~_I3(a)); } -#ifdef IPV6 #define ipa_equal(x,y) ip6_equal(x,y) #define ipa_zero(x) ip6_zero(x) #define ipa_nonzero(x) ip6_nonzero(x) @@ -188,19 +164,8 @@ static inline ip6_addr ip6_not(ip6_addr a) #define ipa_or(x,y) ip6_or(x,y) #define ipa_xor(x,y) ip6_xor(x,y) #define ipa_not(x) ip6_not(x) -#else -#define ipa_equal(x,y) ip4_equal(x,y) -#define ipa_zero(x) ip4_zero(x) -#define ipa_nonzero(x) ip4_nonzero(x) -#define ipa_and(x,y) ip4_and(x,y) -#define ipa_or(x,y) ip4_or(x,y) -#define ipa_xor(x,y) ip4_xor(x,y) -#define ipa_not(x) ip4_not(x) -#endif - -#ifdef IPV6 /* * A zero address is either a token for invalid/unused, or the prefix of default * routes. These functions should be used in the second case, where both IPv4 @@ -213,26 +178,12 @@ static inline int ipa_zero2(ip_addr a) static inline int ipa_nonzero2(ip_addr a) { return _I0(a) || _I1(a) || ((_I2(a) != 0) && (_I2(a) != 0xffff)) || _I3(a); } -#else -#define ipa_zero2(x) ip4_zero(x) -#define ipa_nonzero2(x) ip4_nonzero(x) -#endif - /* * Hash and compare functions */ -static inline uint ip4_hash(ip4_addr a) -{ - /* Returns a 16-bit value */ - u32 x = _I(a); - x ^= x >> 16; - x ^= x << 10; - return x & 0xffff; -} - -static inline u32 ip4_hash32(ip4_addr a) +static inline u32 ip4_hash(ip4_addr a) { /* Returns a 32-bit value, although low-order bits are not mixed */ u32 x = _I(a); @@ -241,14 +192,7 @@ static inline u32 ip4_hash32(ip4_addr a) return x; } -static inline uint ip6_hash(ip6_addr a) -{ - /* Returns a 16-bit hash key */ - u32 x = _I0(a) ^ _I1(a) ^ _I2(a) ^ _I3(a); - return (x ^ (x >> 16) ^ (x >> 8)) & 0xffff; -} - -static inline u32 ip6_hash32(ip6_addr a) +static inline u32 ip6_hash(ip6_addr a) { /* Returns a 32-bit hash key, although low-order bits are not mixed */ u32 x = _I0(a) ^ _I1(a) ^ _I2(a) ^ _I3(a); @@ -260,16 +204,8 @@ static inline int ip4_compare(ip4_addr a, ip4_addr b) int ip6_compare(ip6_addr a, ip6_addr b); - -#ifdef IPV6 #define ipa_hash(x) ip6_hash(x) -#define ipa_hash32(x) ip6_hash32(x) #define ipa_compare(x,y) ip6_compare(x,y) -#else -#define ipa_hash(x) ip4_hash(x) -#define ipa_hash32(x) ip4_hash32(x) -#define ipa_compare(x,y) ip4_compare(x,y) -#endif /* @@ -300,14 +236,10 @@ static inline int ip6_is_link_local(ip6_addr a) static inline int ip6_is_v4mapped(ip6_addr a) { return _I0(a) == 0 && _I1(a) == 0 && _I2(a) == 0xffff; } -#ifdef IPV6 #define ipa_classify(x) ip6_classify(&(x)) #define ipa_is_link_local(x) ip6_is_link_local(x) -#else -#define ipa_classify(x) ip4_classify(x) -#define ipa_is_link_local(x) 0 -#endif +/* XXXX remove */ static inline int ipa_classify_net(ip_addr a) { return ipa_zero2(a) ? (IADDR_HOST | SCOPE_UNIVERSE) : ipa_classify(a); } @@ -319,11 +251,11 @@ static inline int ipa_classify_net(ip_addr a) static inline ip4_addr ip4_mkmask(uint n) { return _MI4(u32_mkmask(n)); } -static inline int ip4_masklen(ip4_addr a) +static inline uint ip4_masklen(ip4_addr a) { return u32_masklen(_I(a)); } ip6_addr ip6_mkmask(uint n); -int ip6_masklen(ip6_addr *a); +uint ip6_masklen(ip6_addr *a); /* ipX_pxlen() requires that x != y */ static inline uint ip4_pxlen(ip4_addr a, ip4_addr b) @@ -345,6 +277,18 @@ static inline u32 ip4_getbit(ip4_addr a, uint pos) static inline u32 ip6_getbit(ip6_addr a, uint pos) { return a.addr[pos / 32] & (0x80000000 >> (pos % 32)); } +static inline u32 ip4_setbit(ip4_addr *a, uint pos) +{ return _I(*a) |= (0x80000000 >> pos); } + +static inline u32 ip6_setbit(ip6_addr *a, uint pos) +{ return a->addr[pos / 32] |= (0x80000000 >> (pos % 32)); } + +static inline u32 ip4_clrbit(ip4_addr *a, uint pos) +{ return _I(*a) &= ~(0x80000000 >> pos); } + +static inline u32 ip6_clrbit(ip6_addr *a, uint pos) +{ return a->addr[pos / 32] &= ~(0x80000000 >> (pos % 32)); } + static inline ip4_addr ip4_opposite_m1(ip4_addr a) { return _MI4(_I(a) ^ 1); } @@ -359,21 +303,8 @@ static inline ip6_addr ip6_opposite_m2(ip6_addr a) ip4_addr ip4_class_mask(ip4_addr ad); -#ifdef IPV6 -#define ipa_mkmask(x) ip6_mkmask(x) -#define ipa_masklen(x) ip6_masklen(&x) -#define ipa_pxlen(x,y) ip6_pxlen(x,y) -#define ipa_getbit(x,n) ip6_getbit(x,n) #define ipa_opposite_m1(x) ip6_opposite_m1(x) #define ipa_opposite_m2(x) ip6_opposite_m2(x) -#else -#define ipa_mkmask(x) ip4_mkmask(x) -#define ipa_masklen(x) ip4_masklen(x) -#define ipa_pxlen(x,y) ip4_pxlen(x,y) -#define ipa_getbit(x,n) ip4_getbit(x,n) -#define ipa_opposite_m1(x) ip4_opposite_m1(x) -#define ipa_opposite_m2(x) ip4_opposite_m2(x) -#endif /* @@ -392,14 +323,6 @@ static inline ip6_addr ip6_hton(ip6_addr a) static inline ip6_addr ip6_ntoh(ip6_addr a) { return _MI6(ntohl(_I0(a)), ntohl(_I1(a)), ntohl(_I2(a)), ntohl(_I3(a))); } -#ifdef IPV6 -#define ipa_hton(x) x = ip6_hton(x) -#define ipa_ntoh(x) x = ip6_ntoh(x) -#else -#define ipa_hton(x) x = ip4_hton(x) -#define ipa_ntoh(x) x = ip4_ntoh(x) -#endif - /* * Unaligned data access (in network order) @@ -430,15 +353,6 @@ static inline void * put_ip6(void *buf, ip6_addr a) return buf+16; } -// XXXX these functions must be redesigned or removed -#ifdef IPV6 -#define get_ipa(x) get_ip6(x) -#define put_ipa(x,y) put_ip6(x,y) -#else -#define get_ipa(x) get_ip4(x) -#define put_ipa(x,y) put_ip4(x,y) -#endif - /* * Binary/text form conversions @@ -456,34 +370,11 @@ static inline char * ip6_ntox(ip6_addr a, char *b) int ip4_pton(const char *a, ip4_addr *o); int ip6_pton(const char *a, ip6_addr *o); -// XXXX these functions must be redesigned or removed -#ifdef IPV6 -#define ipa_ntop(x,y) ip6_ntop(x,y) -#define ipa_ntox(x,y) ip6_ntox(x,y) -#define ipa_pton(x,y) ip6_pton(x,y) -#else -#define ipa_ntop(x,y) ip4_ntop(x,y) -#define ipa_ntox(x,y) ip4_ntox(x,y) -#define ipa_pton(x,y) ip4_pton(x,y) -#endif - /* * Miscellaneous */ -// XXXX review this - -#define ip_is_prefix(a,l) (!ipa_nonzero(ipa_and(a, ipa_not(ipa_mkmask(l))))) -#define ipa_in_net(x,n,p) (ipa_zero(ipa_and(ipa_xor((n),(x)),ipa_mkmask(p)))) -#define net_in_net(n1,l1,n2,l2) (((l1) >= (l2)) && (ipa_zero(ipa_and(ipa_xor((n1),(n2)),ipa_mkmask(l2))))) - char *ip_scope_text(uint); -struct prefix { - ip_addr addr; - uint len; -}; - - #endif |