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authorNeale Ranns <nranns@cisco.com>2016-11-22 17:07:28 +0000
committerDamjan Marion <dmarion.lists@gmail.com>2017-01-27 19:53:46 +0000
commit32e1c010b0c34fd0984f7fc45fae648a182025c5 (patch)
tree06a440bdc9dc039ad0dcf866acc9e10a6ea5e2e7 /src/vnet/ip/ip_api.c
parent6f692d6e5a8ffc920a728372ef773199bc5466c0 (diff)
IP Multicast FIB (mfib)
- IPv[46] mfib tables with support for (*,G/m), (*,G) and (S,G) exact and longest prefix match - Replication represented via a new replicate DPO. - RPF configuration and data-plane checking - data-plane signals sent to listening control planes. The functions of multicast forwarding entries differ from their unicast conterparts, so we introduce a new mfib_table_t and mfib_entry_t objects. However, we re-use the fib_path_list to resolve and build the entry's output list. the fib_path_list provides the service to construct a replicate DPO for multicast. 'make tests' is added to with two new suites; TEST=mfib, this is invocation of the CLI command 'test mfib' which deals with many path add/remove, flag set/unset scenarios, TEST=ip-mcast, data-plane forwarding tests. Updated applications to use the new MIFB functions; - IPv6 NS/RA. - DHCPv6 unit tests for these are undated accordingly. Change-Id: I49ec37b01f1b170335a5697541c8fd30e6d3a961 Signed-off-by: Neale Ranns <nranns@cisco.com>
Diffstat (limited to 'src/vnet/ip/ip_api.c')
-rw-r--r--src/vnet/ip/ip_api.c210
1 files changed, 210 insertions, 0 deletions
diff --git a/src/vnet/ip/ip_api.c b/src/vnet/ip/ip_api.c
index aafde464445..437d26749cd 100644
--- a/src/vnet/ip/ip_api.c
+++ b/src/vnet/ip/ip_api.c
@@ -33,6 +33,9 @@
#include <vnet/dpo/classify_dpo.h>
#include <vnet/dpo/ip_null_dpo.h>
#include <vnet/ethernet/arp_packet.h>
+//#include <vnet/mfib/ip6_mfib.h>
+#include <vnet/mfib/ip4_mfib.h>
+#include <vnet/mfib/mfib_signal.h>
#include <vnet/vnet_msg_enum.h>
@@ -58,6 +61,8 @@ _(IP_FIB_DETAILS, ip_fib_details) \
_(IP6_FIB_DUMP, ip6_fib_dump) \
_(IP6_FIB_DETAILS, ip6_fib_details) \
_(IP_NEIGHBOR_DUMP, ip_neighbor_dump) \
+_(IP_MROUTE_ADD_DEL, ip_mroute_add_del) \
+_(MFIB_SIGNAL_DUMP, mfib_signal_dump) \
_(IP_NEIGHBOR_DETAILS, ip_neighbor_details) \
_(IP_ADDRESS_DUMP, ip_address_dump) \
_(IP_DUMP, ip_dump) \
@@ -845,6 +850,144 @@ vl_api_ip_add_del_route_t_handler (vl_api_ip_add_del_route_t * mp)
REPLY_MACRO (VL_API_IP_ADD_DEL_ROUTE_REPLY);
}
+static int
+add_del_mroute_check (fib_protocol_t table_proto,
+ u32 table_id,
+ u32 next_hop_sw_if_index,
+ u8 is_local, u8 create_missing_tables, u32 * fib_index)
+{
+ vnet_main_t *vnm = vnet_get_main ();
+
+ *fib_index = mfib_table_find (table_proto, ntohl (table_id));
+ if (~0 == *fib_index)
+ {
+ if (create_missing_tables)
+ {
+ *fib_index = mfib_table_find_or_create_and_lock (table_proto,
+ ntohl (table_id));
+ }
+ else
+ {
+ /* No such VRF, and we weren't asked to create one */
+ return VNET_API_ERROR_NO_SUCH_FIB;
+ }
+ }
+
+ if (~0 != ntohl (next_hop_sw_if_index))
+ {
+ if (pool_is_free_index (vnm->interface_main.sw_interfaces,
+ ntohl (next_hop_sw_if_index)))
+ {
+ return VNET_API_ERROR_NO_MATCHING_INTERFACE;
+ }
+ }
+
+ return (0);
+}
+
+static int
+mroute_add_del_handler (u8 is_add,
+ u8 is_local,
+ u32 fib_index,
+ const mfib_prefix_t * prefix,
+ u32 entry_flags,
+ u32 next_hop_sw_if_index, u32 itf_flags)
+{
+ stats_dslock_with_hint (1 /* release hint */ , 2 /* tag */ );
+
+ fib_route_path_t path = {
+ .frp_sw_if_index = next_hop_sw_if_index,
+ .frp_proto = prefix->fp_proto,
+ };
+
+ if (is_local)
+ path.frp_flags |= FIB_ROUTE_PATH_LOCAL;
+
+
+ if (!is_local && ~0 == next_hop_sw_if_index)
+ {
+ mfib_table_entry_update (fib_index, prefix,
+ MFIB_SOURCE_API, entry_flags);
+ }
+ else
+ {
+ if (is_add)
+ {
+ mfib_table_entry_path_update (fib_index, prefix,
+ MFIB_SOURCE_API, &path, itf_flags);
+ }
+ else
+ {
+ mfib_table_entry_path_remove (fib_index, prefix,
+ MFIB_SOURCE_API, &path);
+ }
+ }
+
+ stats_dsunlock ();
+ return (0);
+}
+
+static int
+api_mroute_add_del_t_handler (vl_api_ip_mroute_add_del_t * mp)
+{
+ fib_protocol_t fproto;
+ u32 fib_index;
+ int rv;
+
+ fproto = (mp->is_ipv6 ? FIB_PROTOCOL_IP6 : FIB_PROTOCOL_IP4);
+ rv = add_del_mroute_check (fproto,
+ mp->table_id,
+ mp->next_hop_sw_if_index,
+ mp->is_local,
+ mp->create_vrf_if_needed, &fib_index);
+
+ if (0 != rv)
+ return (rv);
+
+ mfib_prefix_t pfx = {
+ .fp_len = ntohs (mp->grp_address_length),
+ .fp_proto = fproto,
+ };
+
+ if (FIB_PROTOCOL_IP4 == fproto)
+ {
+ clib_memcpy (&pfx.fp_grp_addr.ip4, mp->grp_address,
+ sizeof (pfx.fp_grp_addr.ip4));
+ clib_memcpy (&pfx.fp_src_addr.ip4, mp->src_address,
+ sizeof (pfx.fp_src_addr.ip4));
+ }
+ else
+ {
+ clib_memcpy (&pfx.fp_grp_addr.ip6, mp->grp_address,
+ sizeof (pfx.fp_grp_addr.ip6));
+ clib_memcpy (&pfx.fp_src_addr.ip6, mp->src_address,
+ sizeof (pfx.fp_src_addr.ip6));
+ }
+
+ return (mroute_add_del_handler (mp->is_add,
+ mp->is_local,
+ fib_index, &pfx,
+ ntohl (mp->entry_flags),
+ ntohl (mp->next_hop_sw_if_index),
+ ntohl (mp->itf_flags)));
+}
+
+void
+vl_api_ip_mroute_add_del_t_handler (vl_api_ip_mroute_add_del_t * mp)
+{
+ vl_api_ip_mroute_add_del_reply_t *rmp;
+ int rv;
+ vnet_main_t *vnm = vnet_get_main ();
+
+ vnm->api_errno = 0;
+
+ rv = api_mroute_add_del_t_handler (mp);
+
+ rv = (rv == 0) ? vnm->api_errno : rv;
+
+ REPLY_MACRO (VL_API_IP_MROUTE_ADD_DEL_REPLY);
+}
+
static void
send_ip_details (vpe_api_main_t * am,
unix_shared_memory_queue_t * q, u32 sw_if_index, u32 context)
@@ -1148,6 +1291,73 @@ static void
REPLY_MACRO (VL_API_SW_INTERFACE_IP6_SET_LINK_LOCAL_ADDRESS_REPLY);
}
+void
+vl_mfib_signal_send_one (unix_shared_memory_queue_t * q,
+ u32 context, const mfib_signal_t * mfs)
+{
+ vl_api_mfib_signal_details_t *mp;
+ mfib_prefix_t prefix;
+ mfib_table_t *mfib;
+ mfib_itf_t *mfi;
+
+ mp = vl_msg_api_alloc (sizeof (*mp));
+
+ memset (mp, 0, sizeof (*mp));
+ mp->_vl_msg_id = ntohs (VL_API_MFIB_SIGNAL_DETAILS);
+ mp->context = context;
+
+ mfi = mfib_itf_get (mfs->mfs_itf);
+ mfib_entry_get_prefix (mfs->mfs_entry, &prefix);
+ mfib = mfib_table_get (mfib_entry_get_fib_index (mfs->mfs_entry),
+ prefix.fp_proto);
+ mp->table_id = ntohl (mfib->mft_table_id);
+ mp->sw_if_index = ntohl (mfi->mfi_sw_if_index);
+
+ if (FIB_PROTOCOL_IP4 == prefix.fp_proto)
+ {
+ mp->grp_address_len = ntohs (prefix.fp_len);
+
+ memcpy (mp->grp_address, &prefix.fp_grp_addr.ip4, 4);
+ if (prefix.fp_len > 32)
+ {
+ memcpy (mp->src_address, &prefix.fp_src_addr.ip4, 4);
+ }
+ }
+ else
+ {
+ mp->grp_address_len = ntohs (prefix.fp_len);
+
+ ASSERT (0);
+ }
+
+ if (0 != mfs->mfs_buffer_len)
+ {
+ mp->ip_packet_len = ntohs (mfs->mfs_buffer_len);
+
+ memcpy (mp->ip_packet_data, mfs->mfs_buffer, mfs->mfs_buffer_len);
+ }
+ else
+ {
+ mp->ip_packet_len = 0;
+ }
+
+ vl_msg_api_send_shmem (q, (u8 *) & mp);
+}
+
+static void
+vl_api_mfib_signal_dump_t_handler (vl_api_mfib_signal_dump_t * mp)
+{
+ unix_shared_memory_queue_t *q;
+
+ q = vl_api_client_index_to_input_queue (mp->client_index);
+ if (q == 0)
+ {
+ return;
+ }
+
+ while (q->cursize < q->maxsize && mfib_signal_send_one (q, mp->context))
+ ;
+}
#define vl_msg_name_crc_list
#include <vnet/ip/ip.api.h>