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authorHongjun Ni <hongjun.ni@intel.com>2017-04-12 19:21:16 +0800
committerNeale Ranns <nranns@cisco.com>2017-05-15 19:34:00 +0000
commitef486b1545d892f9f0e0d35e7e57cb0ca04d7ff7 (patch)
treeb3515744ed55a55b76c805a0cb4c6cf552efd0df /src/plugins/gtpu/gtpu_api.c
parente50ed1de1e22dfa04de26fa2a471a703c1b6ed8f (diff)
Add GTP-U plugin. VPP-694
Basic GTP-U feature Change-Id: I31226f890a92c5303ac06e112ed7820cae52d9bd Signed-off-by: Hongjun Ni <hongjun.ni@intel.com>
Diffstat (limited to 'src/plugins/gtpu/gtpu_api.c')
-rw-r--r--src/plugins/gtpu/gtpu_api.c256
1 files changed, 256 insertions, 0 deletions
diff --git a/src/plugins/gtpu/gtpu_api.c b/src/plugins/gtpu/gtpu_api.c
new file mode 100644
index 00000000000..58f48c71e0d
--- /dev/null
+++ b/src/plugins/gtpu/gtpu_api.c
@@ -0,0 +1,256 @@
+/*
+ *------------------------------------------------------------------
+ * gtpu_api.c - gtpu api
+ *
+ * Copyright (c) 2016 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.
+ *------------------------------------------------------------------
+ */
+
+#include <vnet/interface.h>
+#include <vnet/api_errno.h>
+#include <vnet/feature/feature.h>
+#include <vnet/fib/fib_table.h>
+
+#include <vppinfra/byte_order.h>
+#include <vlibmemory/api.h>
+#include <vlibsocket/api.h>
+
+#include <gtpu/gtpu.h>
+
+
+#define vl_msg_id(n,h) n,
+typedef enum
+{
+#include <gtpu/gtpu.api.h>
+ /* We'll want to know how many messages IDs we need... */
+ VL_MSG_FIRST_AVAILABLE,
+} vl_msg_id_t;
+#undef vl_msg_id
+
+/* define message structures */
+#define vl_typedefs
+#include <gtpu/gtpu.api.h>
+#undef vl_typedefs
+
+/* define generated endian-swappers */
+#define vl_endianfun
+#include <gtpu/gtpu.api.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+#define vl_printfun
+#include <gtpu/gtpu.api.h>
+#undef vl_printfun
+
+/* Get the API version number */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <gtpu/gtpu.api.h>
+#undef vl_api_version
+
+#define vl_msg_name_crc_list
+#include <gtpu/gtpu.api.h>
+#undef vl_msg_name_crc_list
+
+#define REPLY_MSG_ID_BASE gtm->msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+static void
+setup_message_id_table (gtpu_main_t * gtm, api_main_t * am)
+{
+#define _(id,n,crc) \
+ vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + gtm->msg_id_base);
+ foreach_vl_msg_name_crc_gtpu;
+#undef _
+}
+
+#define foreach_gtpu_plugin_api_msg \
+_(SW_INTERFACE_SET_GTPU_BYPASS, sw_interface_set_gtpu_bypass) \
+_(GTPU_ADD_DEL_TUNNEL, gtpu_add_del_tunnel) \
+_(GTPU_TUNNEL_DUMP, gtpu_tunnel_dump)
+
+static void
+ vl_api_sw_interface_set_gtpu_bypass_t_handler
+ (vl_api_sw_interface_set_gtpu_bypass_t * mp)
+{
+ vl_api_sw_interface_set_gtpu_bypass_reply_t *rmp;
+ int rv = 0;
+ u32 sw_if_index = ntohl (mp->sw_if_index);
+ gtpu_main_t *gtm = &gtpu_main;
+
+ VALIDATE_SW_IF_INDEX (mp);
+
+ vnet_int_gtpu_bypass_mode (sw_if_index, mp->is_ipv6, mp->enable);
+ BAD_SW_IF_INDEX_LABEL;
+
+ REPLY_MACRO (VL_API_SW_INTERFACE_SET_GTPU_BYPASS_REPLY);
+}
+
+static void vl_api_gtpu_add_del_tunnel_t_handler
+ (vl_api_gtpu_add_del_tunnel_t * mp)
+{
+ vl_api_gtpu_add_del_tunnel_reply_t *rmp;
+ int rv = 0;
+ ip4_main_t *im = &ip4_main;
+ gtpu_main_t *gtm = &gtpu_main;
+
+ uword *p = hash_get (im->fib_index_by_table_id, ntohl (mp->encap_vrf_id));
+ if (!p)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_FIB;
+ goto out;
+ }
+
+ vnet_gtpu_add_del_tunnel_args_t a = {
+ .is_add = mp->is_add,
+ .is_ip6 = mp->is_ipv6,
+ .mcast_sw_if_index = ntohl (mp->mcast_sw_if_index),
+ .encap_fib_index = p[0],
+ .decap_next_index = ntohl (mp->decap_next_index),
+ .teid = ntohl (mp->teid),
+ .dst = to_ip46 (mp->is_ipv6, mp->dst_address),
+ .src = to_ip46 (mp->is_ipv6, mp->src_address),
+ };
+
+ /* Check src & dst are different */
+ if (ip46_address_cmp (&a.dst, &a.src) == 0)
+ {
+ rv = VNET_API_ERROR_SAME_SRC_DST;
+ goto out;
+ }
+ if (ip46_address_is_multicast (&a.dst) &&
+ !vnet_sw_if_index_is_api_valid (a.mcast_sw_if_index))
+ {
+ rv = VNET_API_ERROR_INVALID_SW_IF_INDEX;
+ goto out;
+ }
+
+ u32 sw_if_index = ~0;
+ rv = vnet_gtpu_add_del_tunnel (&a, &sw_if_index);
+
+out:
+ /* *INDENT-OFF* */
+ REPLY_MACRO2(VL_API_GTPU_ADD_DEL_TUNNEL_REPLY,
+ ({
+ rmp->sw_if_index = ntohl (sw_if_index);
+ }));
+ /* *INDENT-ON* */
+}
+
+static void send_gtpu_tunnel_details
+ (gtpu_tunnel_t * t, unix_shared_memory_queue_t * q, u32 context)
+{
+ vl_api_gtpu_tunnel_details_t *rmp;
+ ip4_main_t *im4 = &ip4_main;
+ ip6_main_t *im6 = &ip6_main;
+ u8 is_ipv6 = !ip46_address_is_ip4 (&t->dst);
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_GTPU_TUNNEL_DETAILS);
+ if (is_ipv6)
+ {
+ memcpy (rmp->src_address, t->src.ip6.as_u8, 16);
+ memcpy (rmp->dst_address, t->dst.ip6.as_u8, 16);
+ rmp->encap_vrf_id = htonl (im6->fibs[t->encap_fib_index].ft_table_id);
+ }
+ else
+ {
+ memcpy (rmp->src_address, t->src.ip4.as_u8, 4);
+ memcpy (rmp->dst_address, t->dst.ip4.as_u8, 4);
+ rmp->encap_vrf_id = htonl (im4->fibs[t->encap_fib_index].ft_table_id);
+ }
+ rmp->mcast_sw_if_index = htonl (t->mcast_sw_if_index);
+ rmp->teid = htonl (t->teid);
+ rmp->decap_next_index = htonl (t->decap_next_index);
+ rmp->sw_if_index = htonl (t->sw_if_index);
+ rmp->is_ipv6 = is_ipv6;
+ rmp->context = context;
+
+ vl_msg_api_send_shmem (q, (u8 *) & rmp);
+}
+
+static void
+vl_api_gtpu_tunnel_dump_t_handler (vl_api_gtpu_tunnel_dump_t * mp)
+{
+ unix_shared_memory_queue_t *q;
+ gtpu_main_t *gtm = &gtpu_main;
+ gtpu_tunnel_t *t;
+ u32 sw_if_index;
+
+ q = vl_api_client_index_to_input_queue (mp->client_index);
+ if (q == 0)
+ {
+ return;
+ }
+
+ sw_if_index = ntohl (mp->sw_if_index);
+
+ if (~0 == sw_if_index)
+ {
+ /* *INDENT-OFF* */
+ pool_foreach (t, gtm->tunnels,
+ ({
+ send_gtpu_tunnel_details(t, q, mp->context);
+ }));
+ /* *INDENT-ON* */
+ }
+ else
+ {
+ if ((sw_if_index >= vec_len (gtm->tunnel_index_by_sw_if_index)) ||
+ (~0 == gtm->tunnel_index_by_sw_if_index[sw_if_index]))
+ {
+ return;
+ }
+ t = &gtm->tunnels[gtm->tunnel_index_by_sw_if_index[sw_if_index]];
+ send_gtpu_tunnel_details (t, q, mp->context);
+ }
+}
+
+
+static clib_error_t *
+gtpu_api_hookup (vlib_main_t * vm)
+{
+ gtpu_main_t *gtm = &gtpu_main;
+
+ u8 *name = format (0, "gtpu_%08x%c", api_version, 0);
+ gtm->msg_id_base = vl_msg_api_get_msg_ids
+ ((char *) name, VL_MSG_FIRST_AVAILABLE);
+
+#define _(N,n) \
+ vl_msg_api_set_handlers((VL_API_##N + gtm->msg_id_base), \
+ #n, \
+ vl_api_##n##_t_handler, \
+ vl_noop_handler, \
+ vl_api_##n##_t_endian, \
+ vl_api_##n##_t_print, \
+ sizeof(vl_api_##n##_t), 1);
+ foreach_gtpu_plugin_api_msg;
+#undef _
+
+ /* Add our API messages to the global name_crc hash table */
+ setup_message_id_table (gtm, &api_main);
+
+ return 0;
+}
+
+VLIB_API_INIT_FUNCTION (gtpu_api_hookup);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */