X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fip%2Fip6_packet.h;h=8c0698440e36e709c6e71b762205c02f3231e8a5;hb=9534696b4;hp=b8f8d6e865778a9a49f85722edd3e2ce46813c3c;hpb=a35cc14d37466f0737fa928d25697fbfe6e7d657;p=vpp.git diff --git a/src/vnet/ip/ip6_packet.h b/src/vnet/ip/ip6_packet.h index b8f8d6e8657..8c0698440e3 100644 --- a/src/vnet/ip/ip6_packet.h +++ b/src/vnet/ip/ip6_packet.h @@ -67,8 +67,15 @@ typedef CLIB_PACKED (struct { }) ip6_address_fib_t; /* *INDENT-ON* */ +typedef enum +{ + IP46_TYPE_ANY, + IP46_TYPE_IP4, + IP46_TYPE_IP6 +} ip46_type_t; + /* *INDENT-OFF* */ -typedef CLIB_PACKED (union { +typedef CLIB_PACKED (union ip46_address_t_ { struct { u32 pad[3]; ip4_address_t ip4; @@ -88,6 +95,35 @@ typedef CLIB_PACKED (union { && ((a1)->as_u64[1] == (a2)->as_u64[1])) #define ip46_address_initializer {{{ 0 }}} +static_always_inline int +ip46_address_is_equal_v4 (const ip46_address_t * ip46, + const ip4_address_t * ip4) +{ + return (ip46->ip4.as_u32 == ip4->as_u32); +} + +static_always_inline int +ip46_address_is_equal_v6 (const ip46_address_t * ip46, + const ip6_address_t * ip6) +{ + return ((ip46->ip6.as_u64[0] == ip6->as_u64[0]) && + (ip46->ip6.as_u64[1] == ip6->as_u64[1])); +} + +static_always_inline void +ip46_address_copy (ip46_address_t * dst, const ip46_address_t * src) +{ + dst->as_u64[0] = src->as_u64[0]; + dst->as_u64[1] = src->as_u64[1]; +} + +static_always_inline void +ip46_address_set_ip6 (ip46_address_t * dst, const ip6_address_t * src) +{ + dst->as_u64[0] = src->as_u64[0]; + dst->as_u64[1] = src->as_u64[1]; +} + always_inline ip46_address_t to_ip46 (u32 is_ipv6, u8 * buf) { @@ -101,8 +137,8 @@ to_ip46 (u32 is_ipv6, u8 * buf) always_inline void -ip6_addr_fib_init (ip6_address_fib_t * addr_fib, ip6_address_t * address, - u32 fib_index) +ip6_addr_fib_init (ip6_address_fib_t * addr_fib, + const ip6_address_t * address, u32 fib_index) { addr_fib->ip6_addr = *address; addr_fib->fib_index = fib_index; @@ -148,18 +184,25 @@ typedef enum } ip6_multicast_link_local_group_id_t; always_inline uword -ip6_address_is_multicast (ip6_address_t * a) +ip6_address_is_multicast (const ip6_address_t * a) { return a->as_u8[0] == 0xff; } always_inline uword -ip46_address_is_multicast (ip46_address_t * a) +ip46_address_is_multicast (const ip46_address_t * a) { return ip46_address_is_ip4 (a) ? ip4_address_is_multicast (&a->ip4) : ip6_address_is_multicast (&a->ip6); } +always_inline void +ip6_address_copy (ip6_address_t * dst, const ip6_address_t * src) +{ + dst->as_u64[0] = src->as_u64[0]; + dst->as_u64[1] = src->as_u64[1]; +} + always_inline void ip6_set_reserved_multicast_address (ip6_address_t * a, ip6_multicast_address_scope_t scope, @@ -182,23 +225,6 @@ ip6_set_solicited_node_multicast_address (ip6_address_t * a, u32 id) a->as_u32[3] = clib_host_to_net_u32 (id); } -always_inline void -ip6_link_local_address_from_ethernet_address (ip6_address_t * a, - u8 * ethernet_address) -{ - a->as_u64[0] = a->as_u64[1] = 0; - a->as_u16[0] = clib_host_to_net_u16 (0xfe80); - /* Always set locally administered bit (6). */ - a->as_u8[0x8] = ethernet_address[0] | (1 << 6); - a->as_u8[0x9] = ethernet_address[1]; - a->as_u8[0xa] = ethernet_address[2]; - a->as_u8[0xb] = 0xff; - a->as_u8[0xc] = 0xfe; - a->as_u8[0xd] = ethernet_address[3]; - a->as_u8[0xe] = ethernet_address[4]; - a->as_u8[0xf] = ethernet_address[5]; -} - always_inline void ip6_multicast_ethernet_address (u8 * ethernet_address, u32 group_id) { @@ -211,7 +237,7 @@ ip6_multicast_ethernet_address (u8 * ethernet_address, u32 group_id) } always_inline uword -ip6_address_is_equal (ip6_address_t * a, ip6_address_t * b) +ip6_address_is_equal (const ip6_address_t * a, const ip6_address_t * b) { int i; for (i = 0; i < ARRAY_LEN (a->as_uword); i++) @@ -221,8 +247,9 @@ ip6_address_is_equal (ip6_address_t * a, ip6_address_t * b) } always_inline uword -ip6_address_is_equal_masked (ip6_address_t * a, ip6_address_t * b, - ip6_address_t * mask) +ip6_address_is_equal_masked (const ip6_address_t * a, + const ip6_address_t * b, + const ip6_address_t * mask) { int i; for (i = 0; i < ARRAY_LEN (a->as_uword); i++) @@ -238,7 +265,7 @@ ip6_address_is_equal_masked (ip6_address_t * a, ip6_address_t * b, } always_inline void -ip6_address_mask (ip6_address_t * a, ip6_address_t * mask) +ip6_address_mask (ip6_address_t * a, const ip6_address_t * mask) { int i; for (i = 0; i < ARRAY_LEN (a->as_uword); i++) @@ -258,7 +285,7 @@ ip6_address_mask_from_width (ip6_address_t * a, u32 width) { int i, byte, bit, bitnum; ASSERT (width <= 128); - memset (a, 0, sizeof (a[0])); + clib_memset (a, 0, sizeof (a[0])); for (i = 0; i < width; i++) { bitnum = (7 - (i & 7)); @@ -269,7 +296,7 @@ ip6_address_mask_from_width (ip6_address_t * a, u32 width) } always_inline uword -ip6_address_is_zero (ip6_address_t * a) +ip6_address_is_zero (const ip6_address_t * a) { int i; for (i = 0; i < ARRAY_LEN (a->as_uword); i++) @@ -280,21 +307,18 @@ ip6_address_is_zero (ip6_address_t * a) /* Check for unspecified address ::0 */ always_inline uword -ip6_address_is_unspecified (ip6_address_t * a) +ip6_address_is_unspecified (const ip6_address_t * a) { return ip6_address_is_zero (a); } /* Check for loopback address ::1 */ always_inline uword -ip6_address_is_loopback (ip6_address_t * a) +ip6_address_is_loopback (const ip6_address_t * a) { - uword is_loopback; - u8 save = a->as_u8[15]; - a->as_u8[15] = save ^ 1; - is_loopback = ip6_address_is_zero (a); - a->as_u8[15] = save; - return is_loopback; + return (a->as_u64[0] == 0 && + a->as_u32[2] == 0 && + a->as_u16[6] == 0 && a->as_u8[14] == 0 && a->as_u8[15] == 1); } /* Check for link local unicast fe80::/10. */ @@ -306,21 +330,21 @@ ip6_address_is_link_local_unicast (const ip6_address_t * a) /* Check for unique local unicast fc00::/7. */ always_inline uword -ip6_address_is_local_unicast (ip6_address_t * a) +ip6_address_is_local_unicast (const ip6_address_t * a) { return (a->as_u8[0] & 0xfe) == 0xfc; } /* Check for unique global unicast 2000::/3. */ always_inline uword -ip6_address_is_global_unicast (ip6_address_t * a) +ip6_address_is_global_unicast (const ip6_address_t * a) { return (a->as_u8[0] & 0xe0) == 0x20; } /* Check for solicited node multicast 0xff02::1:ff00:0/104 */ always_inline uword -ip6_is_solicited_node_multicast_address (ip6_address_t * a) +ip6_is_solicited_node_multicast_address (const ip6_address_t * a) { return (a->as_u32[0] == clib_host_to_net_u32 (0xff020000) && a->as_u32[1] == 0 @@ -328,6 +352,18 @@ ip6_is_solicited_node_multicast_address (ip6_address_t * a) && a->as_u8[12] == 0xff); } +always_inline u32 +ip6_address_hash_to_u32 (const ip6_address_t * a) +{ + return (a->as_u32[0] ^ a->as_u32[1] ^ a->as_u32[2] ^ a->as_u32[3]); +} + +always_inline u64 +ip6_address_hash_to_u64 (const ip6_address_t * a) +{ + return (a->as_u64[0] ^ a->as_u64[1]); +} + typedef struct { /* 4 bit version, 8 bit traffic class and 20 bit flow label. */ @@ -347,21 +383,35 @@ typedef struct ip6_address_t src_address, dst_address; } ip6_header_t; -always_inline u8 +always_inline ip_dscp_t ip6_traffic_class (const ip6_header_t * i) { return (i->ip_version_traffic_class_and_flow_label & 0x0FF00000) >> 20; } -static_always_inline u8 +static_always_inline ip_dscp_t ip6_traffic_class_network_order (const ip6_header_t * ip6) { return (clib_net_to_host_u32 (ip6->ip_version_traffic_class_and_flow_label) & 0x0ff00000) >> 20; } +static_always_inline ip_dscp_t +ip6_dscp_network_order (const ip6_header_t * ip6) +{ + return (clib_net_to_host_u32 (ip6->ip_version_traffic_class_and_flow_label) + & 0x0fc00000) >> 22; +} + +static_always_inline ip_ecn_t +ip6_ecn_network_order (const ip6_header_t * ip6) +{ + return (clib_net_to_host_u32 (ip6->ip_version_traffic_class_and_flow_label) + & 0x00300000) >> 20; +} + static_always_inline void -ip6_set_traffic_class_network_order (ip6_header_t * ip6, u8 dscp) +ip6_set_traffic_class_network_order (ip6_header_t * ip6, ip_dscp_t dscp) { u32 tmp = clib_net_to_host_u32 (ip6->ip_version_traffic_class_and_flow_label); @@ -370,6 +420,26 @@ ip6_set_traffic_class_network_order (ip6_header_t * ip6, u8 dscp) ip6->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 (tmp); } +static_always_inline void +ip6_set_dscp_network_order (ip6_header_t * ip6, ip_dscp_t dscp) +{ + u32 tmp = + clib_net_to_host_u32 (ip6->ip_version_traffic_class_and_flow_label); + tmp &= 0xf03fffff; + tmp |= (dscp << 22); + ip6->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 (tmp); +} + +static_always_inline void +ip6_set_ecn_network_order (ip6_header_t * ip6, ip_ecn_t ecn) +{ + u32 tmp = + clib_net_to_host_u32 (ip6->ip_version_traffic_class_and_flow_label); + tmp &= 0xffcfffff; + tmp |= (ecn << 20); + ip6->ip_version_traffic_class_and_flow_label = clib_host_to_net_u32 (tmp); +} + always_inline void * ip6_next_header (ip6_header_t * i) { @@ -474,54 +544,118 @@ typedef CLIB_PACKED (struct { /* Length of this header plus option data in 8 byte units. */ u8 n_data_u64s; }) ip6_ext_header_t; +/* *INDENT-ON* */ + +#define foreach_ext_hdr_type \ + _(IP6_HOP_BY_HOP_OPTIONS) \ + _(IPV6_ROUTE) \ + _(IPV6_FRAGMENTATION) \ + _(IPSEC_ESP) \ + _(IPSEC_AH) \ + _(IP6_DESTINATION_OPTIONS) \ + _(MOBILITY) \ + _(HIP) \ + _(SHIM6) -always_inline u8 ip6_ext_hdr(u8 nexthdr) +always_inline u8 +ip6_ext_hdr (u8 nexthdr) { +#ifdef CLIB_HAVE_VEC128 + static const u8x16 ext_hdr_types = { +#define _(x) IP_PROTOCOL_##x, + foreach_ext_hdr_type +#undef _ + }; + + return !u8x16_is_all_zero (ext_hdr_types == u8x16_splat (nexthdr)); +#else /* * find out if nexthdr is an extension header or a protocol */ - return (nexthdr == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS) || - (nexthdr == IP_PROTOCOL_IPV6_FRAGMENTATION) || - (nexthdr == IP_PROTOCOL_IPSEC_AH) || - (nexthdr == IP_PROTOCOL_IPV6_ROUTE) || - (nexthdr == IP_PROTOCOL_IP6_DESTINATION_OPTIONS); + return 0 +#define _(x) || (nexthdr == IP_PROTOCOL_##x) + foreach_ext_hdr_type; +#undef _ +#endif } #define ip6_ext_header_len(p) ((((ip6_ext_header_t *)(p))->n_data_u64s+1) << 3) #define ip6_ext_authhdr_len(p) ((((ip6_ext_header_t *)(p))->n_data_u64s+2) << 2) always_inline void * -ip6_ext_next_header (ip6_ext_header_t *ext_hdr ) -{ return (void *)((u8 *) ext_hdr + ip6_ext_header_len(ext_hdr)); } +ip6_ext_next_header (ip6_ext_header_t * ext_hdr) +{ + return (void *) ((u8 *) ext_hdr + ip6_ext_header_len (ext_hdr)); +} + +always_inline int +vlib_object_within_buffer_data (vlib_main_t * vm, vlib_buffer_t * b, + void *obj, size_t len) +{ + u8 *o = obj; + if (o < b->data || + o + len > b->data + vlib_buffer_get_default_data_size (vm)) + return 0; + return 1; +} /* - * Macro to find the IPv6 ext header of type t - * I is the IPv6 header - * P is the previous IPv6 ext header (NULL if none) - * M is the matched IPv6 ext header of type t + * find ipv6 extension header within ipv6 header within buffer b + * + * @param vm + * @param b buffer to limit search to + * @param ip6_header ipv6 header + * @param header_type extension header type to search for + * @param[out] prev_ext_header address of header preceding found header */ -#define ip6_ext_header_find_t(i, p, m, t) \ -if ((i)->protocol == t) \ -{ \ - (m) = (void *)((i)+1); \ - (p) = NULL; \ -} \ -else \ -{ \ - (m) = NULL; \ - (p) = (void *)((i)+1); \ - while (ip6_ext_hdr((p)->next_hdr) && \ - ((ip6_ext_header_t *)(p))->next_hdr != (t)) \ - { \ - (p) = ip6_ext_next_header((p)); \ - } \ - if ( ((p)->next_hdr) == (t)) \ - { \ - (m) = (void *)(ip6_ext_next_header((p))); \ - } \ +always_inline void * +ip6_ext_header_find (vlib_main_t * vm, vlib_buffer_t * b, + ip6_header_t * ip6_header, u8 header_type, + ip6_ext_header_t ** prev_ext_header) +{ + ip6_ext_header_t *prev = NULL; + ip6_ext_header_t *result = NULL; + if ((ip6_header)->protocol == header_type) + { + result = (void *) (ip6_header + 1); + if (!vlib_object_within_buffer_data (vm, b, result, + ip6_ext_header_len (result))) + { + result = NULL; + } + } + else + { + result = NULL; + prev = (void *) (ip6_header + 1); + while (ip6_ext_hdr (prev->next_hdr) && prev->next_hdr != header_type) + { + prev = ip6_ext_next_header (prev); + if (!vlib_object_within_buffer_data (vm, b, prev, + ip6_ext_header_len (prev))) + { + prev = NULL; + break; + } + } + if (prev && (prev->next_hdr == header_type)) + { + result = ip6_ext_next_header (prev); + if (!vlib_object_within_buffer_data (vm, b, result, + ip6_ext_header_len (result))) + { + result = NULL; + } + } + } + if (prev_ext_header) + { + *prev_ext_header = prev; + } + return result; } - +/* *INDENT-OFF* */ typedef CLIB_PACKED (struct { u8 next_hdr; /* Length of this header plus option data in 8 byte units. */