tap_v2: include host-side parameters in the dump binary API - vpp

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author	Milan Lenco <milan.lenco@pantheon.tech>	2017-12-14 10:04:25 +0100
committer	Damjan Marion <dmarion.lists@gmail.com>	2017-12-14 11:08:49 +0000
commit	73e7f427e8865b0af71740c5ecfa55c7ee78dbd1 (patch)
tree	dfd02ef5ad15eda2143d5a092bfd9d5628d47ef6 /src/vpp-api/lua
parent	545d9eaeff62af74b6c1d2c27e6067f40685af93 (diff)

tap_v2: include host-side parameters in the dump binary API

Change-Id: I097a738b96a304621520f1842dcac7dbf61a8e3f Signed-off-by: Milan Lenco <milan.lenco@pantheon.tech>

Diffstat (limited to 'src/vpp-api/lua')

0 files changed, 0 insertions, 0 deletions

/* * Copyright (c) 2015 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ /* * ip6/packet.h: ip6 packet format * * Copyright (c) 2008 Eliot Dresselhaus * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ #ifndef included_ip6_packet_h #define included_ip6_packet_h #include <vnet/tcp/tcp_packet.h> #include <vnet/ip/ip4_packet.h> typedef union { u8 as_u8[16]; u16 as_u16[8]; u32 as_u32[4]; u64 as_u64[2]; u64x2 as_u128; uword as_uword[16 / sizeof (uword)]; } __clib_packed ip6_address_t; STATIC_ASSERT_SIZEOF (ip6_address_t, 16); typedef struct { ip6_address_t addr, mask; } ip6_address_and_mask_t; /* Packed so that the mhash key doesn't include uninitialized pad bytes */ /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { /* IP address must be first for ip_interface_address_get_address() to work */ ip6_address_t ip6_addr; u32 fib_index; }) ip6_address_fib_t; /* *INDENT-ON* */ always_inline void 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; } /* Special addresses: unspecified ::/128 loopback ::1/128 global unicast 2000::/3 unique local unicast fc00::/7 link local unicast fe80::/10 multicast ff00::/8 ietf reserved everything else. */ #define foreach_ip6_multicast_address_scope \ _ (loopback, 0x1) \ _ (link_local, 0x2) \ _ (admin_local, 0x4) \ _ (site_local, 0x5) \ _ (organization_local, 0x8) \ _ (global, 0xe) #define foreach_ip6_multicast_link_local_group_id \ _ (all_hosts, 0x1) \ _ (all_routers, 0x2) \ _ (rip_routers, 0x9) \ _ (eigrp_routers, 0xa) \ _ (pim_routers, 0xd) \ _ (mldv2_routers, 0x16) typedef enum { #define _(f,n) IP6_MULTICAST_SCOPE_##f = n, foreach_ip6_multicast_address_scope #undef _ } ip6_multicast_address_scope_t; typedef enum { #define _(f,n) IP6_MULTICAST_GROUP_ID_##f = n, foreach_ip6_multicast_link_local_group_id #undef _ } ip6_multicast_link_local_group_id_t; always_inline uword ip6_address_is_multicast (const ip6_address_t * a) { return a->as_u8[0] == 0xff; } 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, u16 id) { a->as_u64[0] = a->as_u64[1] = 0; a->as_u16[0] = clib_host_to_net_u16 (0xff00 | scope); a->as_u16[7] = clib_host_to_net_u16 (id); } always_inline void ip6_set_solicited_node_multicast_address (ip6_address_t * a, u32 id) { /* 0xff02::1:ffXX:XXXX. */ a->as_u64[0] = a->as_u64[1] = 0; a->as_u16[0] = clib_host_to_net_u16 (0xff02); a->as_u8[11] = 1; ASSERT ((id >> 24) == 0); id |= 0xff << 24; a->as_u32[3] = clib_host_to_net_u32 (id); } always_inline void ip6_multicast_ethernet_address (u8 * ethernet_address, u32 group_id) { ethernet_address[0] = 0x33; ethernet_address[1] = 0x33; ethernet_address[2] = ((group_id >> 24) & 0xff); ethernet_address[3] = ((group_id >> 16) & 0xff); ethernet_address[4] = ((group_id >> 8) & 0xff); ethernet_address[5] = ((group_id >> 0) & 0xff); } always_inline uword 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++) if (a->as_uword[i] != b->as_uword[i]) return 0; return 1; } always_inline uword 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++) { uword a_masked, b_masked; a_masked = a->as_uword[i] & mask->as_uword[i]; b_masked = b->as_uword[i] & mask->as_uword[i]; if (a_masked != b_masked) return 0; } return 1; } always_inline void ip6_address_mask (ip6_address_t * a, const ip6_address_t * mask) { int i; for (i = 0; i < ARRAY_LEN (a->as_uword); i++) a->as_uword[i] &= mask->as_uword[i]; } always_inline void ip6_address_set_zero (ip6_address_t * a) { int i; for (i = 0; i < ARRAY_LEN (a->as_uword); i++) a->as_uword[i] = 0; } always_inline void ip6_address_mask_from_width (ip6_address_t * a, u32 width) { int i, byte, bit, bitnum; ASSERT (width <= 128); clib_memset (a, 0, sizeof (a[0])); for (i = 0; i < width; i++) { bitnum = (7 - (i & 7)); byte = i / 8; bit = 1 << bitnum; a->as_u8[byte] |= bit; } } always_inline uword ip6_address_is_zero (const ip6_address_t * a) { int i; for (i = 0; i < ARRAY_LEN (a->as_uword); i++) if (a->as_uword[i] != 0) return 0; return 1; } /* Check for unspecified address ::0 */ always_inline uword 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 (const ip6_address_t * a) { 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. */ always_inline uword ip6_address_is_link_local_unicast (const ip6_address_t * a) { return a->as_u8[0] == 0xfe && (a->as_u8[1] & 0xc0) == 0x80; } /* Check for unique local unicast fc00::/7. */ always_inline uword 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 (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 (const ip6_address_t * a) { return (a->as_u32[0] == clib_host_to_net_u32 (0xff020000) && a->as_u32[1] == 0 && a->as_u32[2] == clib_host_to_net_u32 (1) && 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. */ u32 ip_version_traffic_class_and_flow_label; /* Total packet length not including this header (but including any extension headers if present). */ u16 payload_length; /* Protocol for next header. */ u8 protocol; /* Hop limit decremented by router at each hop. */ u8 hop_limit; /* Source and destination address. */ ip6_address_t src_address, dst_address; } ip6_header_t; #define IP6_PACKET_TC_MASK 0x0FF00000 #define IP6_PACKET_DSCP_MASK 0x0FC00000 #define IP6_PACKET_ECN_MASK 0x00300000 always_inline ip_dscp_t ip6_traffic_class (const ip6_header_t * i) { return (i->ip_version_traffic_class_and_flow_label & IP6_PACKET_TC_MASK) >> 20; } 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) & IP6_PACKET_TC_MASK) >> 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) & IP6_PACKET_DSCP_MASK) >> 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) & IP6_PACKET_ECN_MASK) >> 20; } static_always_inline void 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); tmp &= 0xf00fffff; tmp |= (dscp << 20); 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) { return (void *) (i + 1); } always_inline void ip6_copy_header (ip6_header_t * dst, const ip6_header_t * src) { dst->ip_version_traffic_class_and_flow_label = src->ip_version_traffic_class_and_flow_label; dst->payload_length = src->payload_length; dst->protocol = src->protocol; dst->hop_limit = src->hop_limit; dst->src_address.as_uword[0] = src->src_address.as_uword[0]; dst->src_address.as_uword[1] = src->src_address.as_uword[1]; dst->dst_address.as_uword[0] = src->dst_address.as_uword[0]; dst->dst_address.as_uword[1] = src->dst_address.as_uword[1]; } always_inline void ip6_tcp_reply_x1 (ip6_header_t * ip0, tcp_header_t * tcp0) { { ip6_address_t src0, dst0; src0 = ip0->src_address; dst0 = ip0->dst_address; ip0->src_address = dst0; ip0->dst_address = src0; } { u16 src0, dst0; src0 = tcp0->src; dst0 = tcp0->dst; tcp0->src = dst0; tcp0->dst = src0; } } always_inline void ip6_tcp_reply_x2 (ip6_header_t * ip0, ip6_header_t * ip1, tcp_header_t * tcp0, tcp_header_t * tcp1) { { ip6_address_t src0, dst0, src1, dst1; src0 = ip0->src_address; src1 = ip1->src_address; dst0 = ip0->dst_address; dst1 = ip1->dst_address; ip0->src_address = dst0; ip1->src_address = dst1; ip0->dst_address = src0; ip1->dst_address = src1; } { u16 src0, dst0, src1, dst1; src0 = tcp0->src; src1 = tcp1->src; dst0 = tcp0->dst; dst1 = tcp1->dst; tcp0->src = dst0; tcp1->src = dst1; tcp0->dst = src0; tcp1->dst = src1; } } /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { u8 data; }) ip6_pad1_option_t; /* *INDENT-ON* */ /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { u8 type; u8 len; u8 data[0]; }) ip6_padN_option_t; /* *INDENT-ON* */ /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { #define IP6_MLDP_ALERT_TYPE 0x5 u8 type; u8 len; u16 value; }) ip6_router_alert_option_t; /* *INDENT-ON* */ /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { u8 next_hdr; /* 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) { #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 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)); } 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; } /* * 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 */ 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; } /* * walk extension headers, looking for a specific extension header and last * extension header, calculating length of all extension headers * * @param vm * @param b buffer to limit search to * @param ip6_header ipv6 header * @param find_hdr extension header to look for (ignored if ext_hdr is NULL) * @param length[out] length of all extension headers * @param ext_hdr[out] extension header of type find_hdr (may be NULL) * @param last_ext_hdr[out] last extension header (may be NULL) * * @return 0 on success, -1 on failure (ext headers crossing buffer boundary) */ always_inline int ip6_walk_ext_hdr (vlib_main_t * vm, vlib_buffer_t * b, const ip6_header_t * ip6_header, u8 find_hdr, u32 * length, ip6_ext_header_t ** ext_hdr, ip6_ext_header_t ** last_ext_hdr) { if (!ip6_ext_hdr (ip6_header->protocol)) { *length = 0; *ext_hdr = NULL; *last_ext_hdr = NULL; return 0; } *length = 0; ip6_ext_header_t *h = (void *) (ip6_header + 1); if (!vlib_object_within_buffer_data (vm, b, h, ip6_ext_header_len (h))) { return -1; } *length += ip6_ext_header_len (h); *last_ext_hdr = h; *ext_hdr = NULL; if (ip6_header->protocol == find_hdr) { *ext_hdr = h; } while (ip6_ext_hdr (h->next_hdr)) { if (h->next_hdr == find_hdr) { h = ip6_ext_next_header (h); *ext_hdr = h; } else { h = ip6_ext_next_header (h); } if (!vlib_object_within_buffer_data (vm, b, h, ip6_ext_header_len (h))) { return -1; } *length += ip6_ext_header_len (h); *last_ext_hdr = h; } return 0; } /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { u8 next_hdr; /* Length of this header plus option data in 8 byte units. */ u8 n_data_u64s; u8 data[0]; }) ip6_hop_by_hop_ext_t; /* *INDENT-ON* */ /* *INDENT-OFF* */ typedef CLIB_PACKED (struct { u8 next_hdr; u8 rsv; u16 fragment_offset_and_more; u32 identification; }) ip6_frag_hdr_t; /* *INDENT-ON* */ #define ip6_frag_hdr_offset(hdr) \ (clib_net_to_host_u16((hdr)->fragment_offset_and_more) >> 3) #define ip6_frag_hdr_offset_bytes(hdr) \ (8 * ip6_frag_hdr_offset(hdr)) #define ip6_frag_hdr_more(hdr) \ (clib_net_to_host_u16((hdr)->fragment_offset_and_more) & 0x1) #define ip6_frag_hdr_offset_and_more(offset, more) \ clib_host_to_net_u16(((offset) << 3) + !!(more)) #endif /* included_ip6_packet_h */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */


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