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-rw-r--r--src/plugins/af_packet/af_packet_api.c253
1 files changed, 253 insertions, 0 deletions
diff --git a/src/plugins/af_packet/af_packet_api.c b/src/plugins/af_packet/af_packet_api.c
new file mode 100644
index 00000000000..ede057659e8
--- /dev/null
+++ b/src/plugins/af_packet/af_packet_api.c
@@ -0,0 +1,253 @@
+/*
+ *------------------------------------------------------------------
+ * af_packet_api.c - af-packet 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/vnet.h>
+#include <vlibmemory/api.h>
+
+#include <vnet/interface.h>
+#include <vnet/api_errno.h>
+#include <af_packet/af_packet.h>
+
+#include <vnet/format_fns.h>
+#include <af_packet/af_packet.api_enum.h>
+#include <af_packet/af_packet.api_types.h>
+
+#define REPLY_MSG_ID_BASE msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+static u16 msg_id_base;
+
+static void
+vl_api_af_packet_create_t_handler (vl_api_af_packet_create_t * mp)
+{
+ af_packet_create_if_arg_t _arg, *arg = &_arg;
+ vl_api_af_packet_create_reply_t *rmp;
+ int rv = 0;
+
+ clib_memset (arg, 0, sizeof (*arg));
+
+ arg->host_if_name = format (0, "%s", mp->host_if_name);
+ vec_add1 (arg->host_if_name, 0);
+
+ arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr;
+ arg->mode = AF_PACKET_IF_MODE_ETHERNET;
+ // Default flags
+ arg->flags = AF_PACKET_IF_FLAGS_QDISC_BYPASS | AF_PACKET_IF_FLAGS_CKSUM_GSO;
+ rv = af_packet_create_if (arg);
+
+ vec_free (arg->host_if_name);
+
+ REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_REPLY, ({
+ rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index);
+ }));
+}
+
+static void
+vl_api_af_packet_create_v2_t_handler (vl_api_af_packet_create_v2_t *mp)
+{
+ af_packet_create_if_arg_t _arg, *arg = &_arg;
+ vl_api_af_packet_create_v2_reply_t *rmp;
+ int rv = 0;
+
+ clib_memset (arg, 0, sizeof (*arg));
+
+ arg->host_if_name = format (0, "%s", mp->host_if_name);
+ vec_add1 (arg->host_if_name, 0);
+
+ // Default number of rx/tx queue(s)
+ arg->num_rxqs = 1;
+ arg->num_txqs = 1;
+ arg->rx_frame_size = clib_net_to_host_u32 (mp->rx_frame_size);
+ arg->tx_frame_size = clib_net_to_host_u32 (mp->tx_frame_size);
+ arg->rx_frames_per_block = clib_net_to_host_u32 (mp->rx_frames_per_block);
+ arg->tx_frames_per_block = clib_net_to_host_u32 (mp->tx_frames_per_block);
+ arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr;
+ arg->mode = AF_PACKET_IF_MODE_ETHERNET;
+ // Default flags
+ arg->flags = AF_PACKET_IF_FLAGS_QDISC_BYPASS | AF_PACKET_IF_FLAGS_CKSUM_GSO;
+
+ if (mp->num_rx_queues > 1)
+ arg->num_rxqs = clib_net_to_host_u16 (mp->num_rx_queues);
+
+ rv = af_packet_create_if (arg);
+
+ vec_free (arg->host_if_name);
+ REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_V2_REPLY, ({
+ rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index);
+ }));
+}
+
+static void
+vl_api_af_packet_create_v3_t_handler (vl_api_af_packet_create_v3_t *mp)
+{
+ af_packet_create_if_arg_t _arg, *arg = &_arg;
+ vl_api_af_packet_create_v3_reply_t *rmp;
+ int rv = 0;
+
+ clib_memset (arg, 0, sizeof (*arg));
+
+ arg->host_if_name = format (0, "%s", mp->host_if_name);
+ vec_add1 (arg->host_if_name, 0);
+
+ // Default number of rx/tx queue(s)
+ arg->num_rxqs = 1;
+ arg->num_txqs = 1;
+ arg->rx_frame_size = clib_net_to_host_u32 (mp->rx_frame_size);
+ arg->tx_frame_size = clib_net_to_host_u32 (mp->tx_frame_size);
+ arg->rx_frames_per_block = clib_net_to_host_u32 (mp->rx_frames_per_block);
+ arg->tx_frames_per_block = clib_net_to_host_u32 (mp->tx_frames_per_block);
+ arg->hw_addr = mp->use_random_hw_addr ? 0 : mp->hw_addr;
+
+ switch (clib_net_to_host_u32 (mp->mode))
+ {
+ case AF_PACKET_API_MODE_ETHERNET:
+ arg->mode = AF_PACKET_IF_MODE_ETHERNET;
+ break;
+ case AF_PACKET_API_MODE_IP:
+ arg->mode = AF_PACKET_IF_MODE_IP;
+ break;
+ default:
+ arg->sw_if_index = ~0;
+ rv = VNET_ERR_INVALID_VALUE;
+ goto error;
+ }
+
+ STATIC_ASSERT (((int) AF_PACKET_API_FLAG_QDISC_BYPASS ==
+ (int) AF_PACKET_IF_FLAGS_QDISC_BYPASS),
+ "af-packet qdisc-bypass api flag mismatch");
+ STATIC_ASSERT (
+ ((int) AF_PACKET_API_FLAG_CKSUM_GSO == (int) AF_PACKET_IF_FLAGS_CKSUM_GSO),
+ "af-packet checksum/gso offload api flag mismatch");
+
+ STATIC_ASSERT (
+ ((int) AF_PACKET_API_FLAG_VERSION_2 == (int) AF_PACKET_IF_FLAGS_VERSION_2),
+ "af-packet version 2 api flag mismatch");
+
+ // Default flags
+ arg->flags = clib_net_to_host_u32 (mp->flags);
+
+ if (clib_net_to_host_u16 (mp->num_rx_queues) > 1)
+ arg->num_rxqs = clib_net_to_host_u16 (mp->num_rx_queues);
+
+ if (clib_net_to_host_u16 (mp->num_tx_queues) > 1)
+ arg->num_txqs = clib_net_to_host_u16 (mp->num_tx_queues);
+
+ arg->is_v2 = (arg->flags & AF_PACKET_API_FLAG_VERSION_2) ? 1 : 0;
+ rv = af_packet_create_if (arg);
+
+error:
+ vec_free (arg->host_if_name);
+ REPLY_MACRO2 (VL_API_AF_PACKET_CREATE_V3_REPLY, ({
+ rmp->sw_if_index = clib_host_to_net_u32 (arg->sw_if_index);
+ }));
+}
+
+static void
+vl_api_af_packet_delete_t_handler (vl_api_af_packet_delete_t * mp)
+{
+ vl_api_af_packet_delete_reply_t *rmp;
+ int rv = 0;
+ u8 *host_if_name = NULL;
+
+ host_if_name = format (0, "%s", mp->host_if_name);
+ vec_add1 (host_if_name, 0);
+
+ rv = af_packet_delete_if (host_if_name);
+
+ vec_free (host_if_name);
+
+ REPLY_MACRO (VL_API_AF_PACKET_DELETE_REPLY);
+}
+
+static void
+ vl_api_af_packet_set_l4_cksum_offload_t_handler
+ (vl_api_af_packet_set_l4_cksum_offload_t * mp)
+{
+ vl_api_af_packet_delete_reply_t *rmp;
+ int rv = 0;
+
+ rv = af_packet_set_l4_cksum_offload (ntohl (mp->sw_if_index), mp->set);
+ REPLY_MACRO (VL_API_AF_PACKET_SET_L4_CKSUM_OFFLOAD_REPLY);
+}
+
+static void
+af_packet_send_details (vpe_api_main_t * am,
+ vl_api_registration_t * reg,
+ af_packet_if_detail_t * af_packet_if, u32 context)
+{
+ vl_api_af_packet_details_t *mp;
+ mp = vl_msg_api_alloc (sizeof (*mp));
+ clib_memset (mp, 0, sizeof (*mp));
+ mp->_vl_msg_id = htons (REPLY_MSG_ID_BASE + VL_API_AF_PACKET_DETAILS);
+ mp->sw_if_index = htonl (af_packet_if->sw_if_index);
+ clib_memcpy (mp->host_if_name, af_packet_if->host_if_name,
+ MIN (ARRAY_LEN (mp->host_if_name) - 1,
+ strlen ((const char *) af_packet_if->host_if_name)));
+
+ mp->context = context;
+ vl_api_send_msg (reg, (u8 *) mp);
+}
+
+
+static void
+vl_api_af_packet_dump_t_handler (vl_api_af_packet_dump_t * mp)
+{
+ int rv;
+ vpe_api_main_t *am = &vpe_api_main;
+ vl_api_registration_t *reg;
+ af_packet_if_detail_t *out_af_packet_ifs = NULL;
+ af_packet_if_detail_t *af_packet_if = NULL;
+
+ reg = vl_api_client_index_to_registration (mp->client_index);
+ if (!reg)
+ return;
+
+ rv = af_packet_dump_ifs (&out_af_packet_ifs);
+ if (rv)
+ return;
+
+ vec_foreach (af_packet_if, out_af_packet_ifs)
+ {
+ af_packet_send_details (am, reg, af_packet_if, mp->context);
+ }
+
+ vec_free (out_af_packet_ifs);
+}
+
+#include <af_packet/af_packet.api.c>
+static clib_error_t *
+af_packet_api_hookup (vlib_main_t * vm)
+{
+ /*
+ * Set up the (msg_name, crc, message-id) table
+ */
+ REPLY_MSG_ID_BASE = setup_message_id_table ();
+
+ return 0;
+}
+
+VLIB_API_INIT_FUNCTION (af_packet_api_hookup);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */