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authorHongjun Ni <hongjun.ni@intel.com>2017-07-04 20:11:57 +0800
committerNeale Ranns <nranns@cisco.com>2017-08-09 07:41:11 +0000
commit62f9cdd82c52dc05cb89a742d21aba013ce526d4 (patch)
tree76fcde5125faf02ae21724598786e72acc568769 /src/plugins/pppoe/pppoe_api.c
parentf73d0e2ea6bf4e0dc9c69ec4f1d0c7b9b41d2fa3 (diff)
Add PPPoE Plugin
Supports 64K PPPoE sessions This plugin adds three graph nodes: 1) pppoe-input for PPPoE decapsulation 2) pppoe-encap for PPPoE encapsulation 3) pppoe-tap-dispatch for control plane process Below is the configuration to make PPPoE CP and DP work: vim /etc/vpp/startup.conf tuntap { enable ethernet name newtap } create pppoe tap tap-if-index 1 //Configure it after a subscriber's PPPoE discovery and PPP link establishment succeeds: create pppoe session client-ip 100.1.2.1 session-id 1 client-mac 00:11:01:00:00:01 show pppoe fib show pppoe session Change-Id: I73e724b6bf7c3e4181a9914c5752da1fa72d7e60 Signed-off-by: Hongjun Ni <hongjun.ni@intel.com>
Diffstat (limited to 'src/plugins/pppoe/pppoe_api.c')
-rw-r--r--src/plugins/pppoe/pppoe_api.c224
1 files changed, 224 insertions, 0 deletions
diff --git a/src/plugins/pppoe/pppoe_api.c b/src/plugins/pppoe/pppoe_api.c
new file mode 100644
index 00000000000..9b7584606a2
--- /dev/null
+++ b/src/plugins/pppoe/pppoe_api.c
@@ -0,0 +1,224 @@
+/*
+ *------------------------------------------------------------------
+ * pppoe_api.c - pppoe api
+ *
+ * Copyright (c) 2017 Intel 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 <pppoe/pppoe.h>
+
+
+#define vl_msg_id(n,h) n,
+typedef enum
+{
+#include <pppoe/pppoe.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 <pppoe/pppoe.api.h>
+#undef vl_typedefs
+
+/* define generated endian-swappers */
+#define vl_endianfun
+#include <pppoe/pppoe.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 <pppoe/pppoe.api.h>
+#undef vl_printfun
+
+/* Get the API version number */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <pppoe/pppoe.api.h>
+#undef vl_api_version
+
+#define vl_msg_name_crc_list
+#include <pppoe/pppoe.api.h>
+#undef vl_msg_name_crc_list
+
+#define REPLY_MSG_ID_BASE pem->msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+static void
+setup_message_id_table (pppoe_main_t * pem, api_main_t * am)
+{
+#define _(id,n,crc) \
+ vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + pem->msg_id_base);
+ foreach_vl_msg_name_crc_pppoe;
+#undef _
+}
+
+#define foreach_pppoe_plugin_api_msg \
+_(PPPOE_ADD_DEL_SESSION, pppoe_add_del_session) \
+_(PPPOE_SESSION_DUMP, pppoe_session_dump)
+
+static void vl_api_pppoe_add_del_session_t_handler
+ (vl_api_pppoe_add_del_session_t * mp)
+{
+ vl_api_pppoe_add_del_session_reply_t *rmp;
+ int rv = 0;
+ u32 decap_fib_index;
+ ip4_main_t *im = &ip4_main;
+ pppoe_main_t *pem = &pppoe_main;
+
+ uword *p = hash_get (im->fib_index_by_table_id, ntohl (mp->decap_vrf_id));
+ if (!p)
+ {
+ rv = VNET_API_ERROR_NO_SUCH_INNER_FIB;
+ goto out;
+ }
+ decap_fib_index = p[0];
+
+ vnet_pppoe_add_del_session_args_t a = {
+ .is_add = mp->is_add,
+ .is_ip6 = mp->is_ipv6,
+ .decap_fib_index = decap_fib_index,
+ .session_id = ntohs (mp->session_id),
+ .client_ip = to_ip46 (mp->is_ipv6, mp->client_ip),
+ };
+ clib_memcpy (a.client_mac, mp->client_mac, 6);
+
+ u32 sw_if_index = ~0;
+ rv = vnet_pppoe_add_del_session (&a, &sw_if_index);
+
+out:
+ /* *INDENT-OFF* */
+ REPLY_MACRO2(VL_API_PPPOE_ADD_DEL_SESSION_REPLY,
+ ({
+ rmp->sw_if_index = ntohl (sw_if_index);
+ }));
+ /* *INDENT-ON* */
+}
+
+static void send_pppoe_session_details
+ (pppoe_session_t * t, unix_shared_memory_queue_t * q, u32 context)
+{
+ vl_api_pppoe_session_details_t *rmp;
+ ip4_main_t *im4 = &ip4_main;
+ ip6_main_t *im6 = &ip6_main;
+ u8 is_ipv6 = !ip46_address_is_ip4 (&t->client_ip);
+
+ rmp = vl_msg_api_alloc (sizeof (*rmp));
+ memset (rmp, 0, sizeof (*rmp));
+ rmp->_vl_msg_id = ntohs (VL_API_PPPOE_SESSION_DETAILS);
+ if (is_ipv6)
+ {
+ memcpy (rmp->client_ip, t->client_ip.ip6.as_u8, 16);
+ rmp->decap_vrf_id = htonl (im6->fibs[t->decap_fib_index].ft_table_id);
+ }
+ else
+ {
+ memcpy (rmp->client_ip, t->client_ip.ip4.as_u8, 4);
+ rmp->decap_vrf_id = htonl (im4->fibs[t->decap_fib_index].ft_table_id);
+ }
+ rmp->session_id = htons (t->session_id);
+ rmp->encap_if_index = htonl (t->encap_if_index);
+ clib_memcpy (rmp->local_mac, t->local_mac, 6);
+ clib_memcpy (rmp->client_mac, t->client_mac, 6);
+ 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_pppoe_session_dump_t_handler (vl_api_pppoe_session_dump_t * mp)
+{
+ unix_shared_memory_queue_t *q;
+ pppoe_main_t *pem = &pppoe_main;
+ pppoe_session_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, pem->sessions,
+ ({
+ send_pppoe_session_details(t, q, mp->context);
+ }));
+ /* *INDENT-ON* */
+ }
+ else
+ {
+ if ((sw_if_index >= vec_len (pem->session_index_by_sw_if_index)) ||
+ (~0 == pem->session_index_by_sw_if_index[sw_if_index]))
+ {
+ return;
+ }
+ t = &pem->sessions[pem->session_index_by_sw_if_index[sw_if_index]];
+ send_pppoe_session_details (t, q, mp->context);
+ }
+}
+
+
+static clib_error_t *
+pppoe_api_hookup (vlib_main_t * vm)
+{
+ pppoe_main_t *pem = &pppoe_main;
+
+ u8 *name = format (0, "pppoe_%08x%c", api_version, 0);
+ pem->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 + pem->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_pppoe_plugin_api_msg;
+#undef _
+
+ /* Add our API messages to the global name_crc hash table */
+ setup_message_id_table (pem, &api_main);
+
+ return 0;
+}
+
+VLIB_API_INIT_FUNCTION (pppoe_api_hookup);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */