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Diffstat (limited to 'src/vnet/ip/igmp_packet.h')
| -rw-r--r-- | src/vnet/ip/igmp_packet.h | 155 |
1 files changed, 155 insertions, 0 deletions
diff --git a/src/vnet/ip/igmp_packet.h b/src/vnet/ip/igmp_packet.h new file mode 100644 index 00000000000..503259ece7c --- /dev/null +++ b/src/vnet/ip/igmp_packet.h @@ -0,0 +1,155 @@ +/* + * 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. + */ +/* + * igmp_packet.h: igmp packet format + * + * Copyright (c) 2011 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_vnet_igmp_packet_h +#define included_vnet_igmp_packet_h + +#include <vnet/ip/ip4_packet.h> +#include <vnet/ip/ip6_packet.h> + +#define foreach_igmp_type \ + _ (0x11, membership_query) \ + _ (0x12, membership_report_v1) \ + _ (0x13, dvmrp) \ + _ (0x14, pim_v1) \ + _ (0x15, cisco_trace) \ + _ (0x16, membership_report_v2) \ + _ (0x17, leave_group_v2) \ + _ (0x1e, traceroute_response) \ + _ (0x1f, traceroute_request) \ + _ (0x22, membership_report_v3) \ + _ (0x30, router_advertisement) \ + _ (0x31, router_solicitation) \ + _ (0x32, router_termination) + +typedef enum +{ +#define _(n,f) IGMP_TYPE_##f = n, + foreach_igmp_type +#undef _ +} igmp_type_t; + +typedef struct +{ + igmp_type_t type:8; + + u8 code; + + u16 checksum; +} igmp_header_t; + +typedef struct +{ + /* membership_query, version <= 2 reports. */ + igmp_header_t header; + + /* Multicast destination address. */ + ip4_address_t dst; +} igmp_message_t; + +#define foreach_igmp_membership_group_v3_type \ + _ (1, mode_is_filter_include) \ + _ (2, mode_is_filter_exclude) \ + _ (3, change_to_filter_include) \ + _ (4, change_to_filter_exclude) \ + _ (5, allow_new_sources) \ + _ (6, block_old_sources) + +typedef enum +{ +#define _(n,f) IGMP_MEMBERSHIP_GROUP_##f = n, + foreach_igmp_membership_group_v3_type +#undef _ +} igmp_membership_group_v3_type_t; + +typedef struct +{ + igmp_membership_group_v3_type_t type:8; + + /* Number of 32 bit words of aux data after source addresses. */ + u8 n_aux_u32s; + + /* Number of source addresses that follow. */ + u16 n_src_addresses; + + /* Destination multicast address. */ + ip4_address_t dst_address; + + ip4_address_t src_addresses[0]; +} igmp_membership_group_v3_t; + +always_inline igmp_membership_group_v3_t * +igmp_membership_group_v3_next (igmp_membership_group_v3_t * g) +{ + return ((void *) g + + g->n_src_addresses * sizeof (g->src_addresses[0]) + + g->n_aux_u32s * sizeof (u32)); +} + +typedef struct +{ + /* Type 0x22. */ + igmp_header_t header; + + u16 unused; + + /* Number of groups which follow. */ + u16 n_groups; + + igmp_membership_group_v3_t groups[0]; +} igmp_membership_report_v3_t; + +/* IP6 flavor of IGMP is called MLD which is embedded in ICMP6. */ +typedef struct +{ + /* Preceeded by ICMP v6 header. */ + u16 max_response_delay_in_milliseconds; + u16 reserved; + ip6_address_t dst; +} mld_header_t; + +#endif /* included_vnet_igmp_packet_h */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |