summaryrefslogtreecommitdiffstats
path: root/src/plugins/af_xdp/api.c
diff options
context:
space:
mode:
authorBenoît Ganne <bganne@cisco.com>2020-06-12 08:47:34 +0200
committerDamjan Marion <dmarion@me.com>2020-08-31 17:16:56 +0000
commit4a76d6f6da035220917097bc047b08bc58254803 (patch)
tree10399485df66c0ebeeaa32edbb7a1022b8baa9b3 /src/plugins/af_xdp/api.c
parentbfed7c047d2807f835cd7b9ef0330d314ac0ebc5 (diff)
af_xdp: AF_XDP input plugin
Type: feature Change-Id: I85aa4ad6b68c1aa0e51938002dc691a4b11c545c Signed-off-by: Damjan Marion <damarion@cisco.com> Signed-off-by: Benoît Ganne <bganne@cisco.com>
Diffstat (limited to 'src/plugins/af_xdp/api.c')
-rw-r--r--src/plugins/af_xdp/api.c125
1 files changed, 125 insertions, 0 deletions
diff --git a/src/plugins/af_xdp/api.c b/src/plugins/af_xdp/api.c
new file mode 100644
index 00000000000..7592aa4ffda
--- /dev/null
+++ b/src/plugins/af_xdp/api.c
@@ -0,0 +1,125 @@
+/*
+ *------------------------------------------------------------------
+ * Copyright (c) 2020 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 <vlib/vlib.h>
+#include <vnet/vnet.h>
+
+#include <af_xdp/af_xdp.h>
+
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+
+/* define message IDs */
+#include <af_xdp/af_xdp.api_enum.h>
+#include <af_xdp/af_xdp.api_types.h>
+
+#include <vlibapi/api_helper_macros.h>
+
+static af_xdp_mode_t
+af_xdp_api_mode (vl_api_af_xdp_mode_t mode)
+{
+ switch (mode)
+ {
+ case AF_XDP_API_MODE_AUTO:
+ return AF_XDP_MODE_AUTO;
+ case AF_XDP_API_MODE_COPY:
+ return AF_XDP_MODE_COPY;
+ case AF_XDP_API_MODE_ZERO_COPY:
+ return AF_XDP_MODE_ZERO_COPY;
+ }
+ return AF_XDP_MODE_AUTO;
+}
+
+static void
+vl_api_af_xdp_create_t_handler (vl_api_af_xdp_create_t * mp)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ af_xdp_main_t *rm = &af_xdp_main;
+ vl_api_af_xdp_create_reply_t *rmp;
+ af_xdp_create_if_args_t args;
+ int rv;
+
+ clib_memset (&args, 0, sizeof (af_xdp_create_if_args_t));
+
+ args.linux_ifname = mp->host_if[0] ? (char *) mp->host_if : 0;
+ args.name = mp->name[0] ? (char *) mp->name : 0;
+ args.prog = mp->prog[0] ? (char *) mp->prog : 0;
+ args.mode = af_xdp_api_mode (mp->mode);
+ args.rxq_size = ntohs (mp->rxq_size);
+ args.txq_size = ntohs (mp->txq_size);
+ args.rxq_num = ntohs (mp->rxq_num);
+
+ af_xdp_create_if (vm, &args);
+ rv = args.rv;
+
+ /* *INDENT-OFF* */
+ REPLY_MACRO2 (VL_API_AF_XDP_CREATE_REPLY + rm->msg_id_base,
+ ({
+ rmp->sw_if_index = ntohl (args.sw_if_index);
+ }));
+ /* *INDENT-ON* */
+}
+
+static void
+vl_api_af_xdp_delete_t_handler (vl_api_af_xdp_delete_t * mp)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ vnet_main_t *vnm = vnet_get_main ();
+ af_xdp_main_t *rm = &af_xdp_main;
+ vl_api_af_xdp_delete_reply_t *rmp;
+ af_xdp_device_t *rd;
+ vnet_hw_interface_t *hw;
+ int rv = 0;
+
+ hw =
+ vnet_get_sup_hw_interface_api_visible_or_null (vnm,
+ htonl (mp->sw_if_index));
+ if (hw == NULL || af_xdp_device_class.index != hw->dev_class_index)
+ {
+ rv = VNET_API_ERROR_INVALID_INTERFACE;
+ goto reply;
+ }
+
+ rd = pool_elt_at_index (rm->devices, hw->dev_instance);
+
+ af_xdp_delete_if (vm, rd);
+
+reply:
+ REPLY_MACRO (VL_API_AF_XDP_DELETE_REPLY + rm->msg_id_base);
+}
+
+/* set tup the API message handling tables */
+#include <af_xdp/af_xdp.api.c>
+static clib_error_t *
+af_xdp_plugin_api_hookup (vlib_main_t * vm)
+{
+ af_xdp_main_t *rm = &af_xdp_main;
+
+ /* ask for a correctly-sized block of API message decode slots */
+ rm->msg_id_base = setup_message_id_table ();
+ return 0;
+}
+
+VLIB_API_INIT_FUNCTION (af_xdp_plugin_api_hookup);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */