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+/*
+ * 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:
+ */