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;;; plugin-node-skel.el - vpp engine plug-in "node.c" skeleton
;;;
;;; 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.
(require 'skeleton)
(define-skeleton skel-plugin-qsnode
"Insert a plug-in 'node.c' skeleton "
nil
'(if (not (boundp 'plugin-name))
(setq plugin-name (read-string "Plugin name: ")))
'(setq PLUGIN-NAME (upcase plugin-name))
'(setq capital-oh-en "ON")
"/*
* node.c - skeleton vpp engine plug-in dual-loop node skeleton
*
* Copyright (c) <current-year> <your-organization>
* 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 <vnet/pg/pg.h>
#include <vppinfra/error.h>
#include <" plugin-name "/" plugin-name ".h>
typedef struct
{
u32 sw_if_index;
u32 next_index;
} " plugin-name "_trace_t;
#ifndef CLIB_MARCH_VARIANT
/* packet trace format function */
static u8 * format_" plugin-name "_trace (u8 * s, va_list * args)
{
CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
" plugin-name "_trace_t * t = va_arg (*args, " plugin-name "_trace_t *);
s = format (s, \"" PLUGIN-NAME ": sw_if_index %d, next index %d\\n\",
t->sw_if_index, t->next_index);
return s;
}
vlib_node_registration_t " plugin-name "_node;
#endif /* CLIB_MARCH_VARIANT */
#define foreach_" plugin-name "_error \\
_(SWAPPED, \"Mac swap packets processed\")
typedef enum
{
#define _(sym,str) " PLUGIN-NAME "_ERROR_##sym,
foreach_" plugin-name "_error
#undef _
" PLUGIN-NAME "_N_ERROR,
} " plugin-name "_error_t;
#ifndef CLIB_MARCH_VARIANT
static char * " plugin-name "_error_strings[] =
{
#define _(sym,string) string,
foreach_" plugin-name "_error
#undef _
};
#endif /* CLIB_MARCH_VARIANT */
typedef enum
{
" PLUGIN-NAME "_NEXT_DROP,
" PLUGIN-NAME "_N_NEXT,
} " plugin-name "_next_t;
always_inline uword
"plugin-name"_inline (vlib_main_t * vm,
vlib_node_runtime_t * node, vlib_frame_t * frame,
int is_ip4, int is_trace)
{
u32 n_left_from, *from;
vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b;
u16 nexts[VLIB_FRAME_SIZE], *next;
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
vlib_get_buffers (vm, from, bufs, n_left_from);
b = bufs;
next = nexts;
while (n_left_from >= 4)
{
/* Prefetch next iteration. */
if (PREDICT_TRUE (n_left_from >= 8))
{
vlib_prefetch_buffer_header (b[4], STORE);
vlib_prefetch_buffer_header (b[5], STORE);
vlib_prefetch_buffer_header (b[6], STORE);
vlib_prefetch_buffer_header (b[7], STORE);
CLIB_PREFETCH (b[4]->data, CLIB_CACHE_LINE_BYTES, STORE);
CLIB_PREFETCH (b[5]->data, CLIB_CACHE_LINE_BYTES, STORE);
CLIB_PREFETCH (b[6]->data, CLIB_CACHE_LINE_BYTES, STORE);
CLIB_PREFETCH (b[7]->data, CLIB_CACHE_LINE_BYTES, STORE);
}
/* $$$$ process 4x pkts right here */
next[0] = 0;
next[1] = 0;
next[2] = 0;
next[3] = 0;
if (is_trace)
{
if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
{
"plugin-name"_trace_t *t =
vlib_add_trace (vm, node, b[0], sizeof (*t));
t->next_index = next[0];
t->sw_if_index = vnet_buffer(b[0])->sw_if_index[VLIB_RX];
}
if (b[1]->flags & VLIB_BUFFER_IS_TRACED)
{
"plugin-name"_trace_t *t =
vlib_add_trace (vm, node, b[1], sizeof (*t));
t->next_index = next[1];
t->sw_if_index = vnet_buffer(b[1])->sw_if_index[VLIB_RX];
}
if (b[2]->flags & VLIB_BUFFER_IS_TRACED)
{
"plugin-name"_trace_t *t =
vlib_add_trace (vm, node, b[2], sizeof (*t));
t->next_index = next[2];
t->sw_if_index = vnet_buffer(b[2])->sw_if_index[VLIB_RX];
}
if (b[3]->flags & VLIB_BUFFER_IS_TRACED)
{
"plugin-name"_trace_t *t =
vlib_add_trace (vm, node, b[3], sizeof (*t));
t->next_index = next[3];
t->sw_if_index = vnet_buffer(b[3])->sw_if_index[VLIB_RX];
}
}
b += 4;
next += 4;
n_left_from -= 4;
}
while (n_left_from > 0)
{
/* $$$$ process 1 pkt right here */
next[0] = 0;
if (is_trace)
{
if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
{
"plugin-name"_trace_t *t =
vlib_add_trace (vm, node, b[0], sizeof (*t));
t->next_index = next[0];
t->sw_if_index = vnet_buffer(b[0])->sw_if_index[VLIB_RX];
}
}
b += 1;
next += 1;
n_left_from -= 1;
}
vlib_buffer_enqueue_to_next (vm, node, from, nexts, frame->n_vectors);
return frame->n_vectors;
}
VLIB_NODE_FN ("plugin-name"_node) (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE))
return " plugin-name "_inline (vm, node, frame, 1 /* is_ip4 */ ,
1 /* is_trace */ );
else
return " plugin-name "_inline (vm, node, frame, 1 /* is_ip4 */ ,
0 /* is_trace */ );
}
/* *INDENT-OFF* */
#ifndef CLIB_MARCH_VARIANT
VLIB_REGISTER_NODE (" plugin-name "_node) =
{
.name = \"" plugin-name "\",
.vector_size = sizeof (u32),
.format_trace = format_" plugin-name "_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN(" plugin-name "_error_strings),
.error_strings = " plugin-name "_error_strings,
.n_next_nodes = " PLUGIN-NAME "_N_NEXT,
/* edit / add dispositions here */
.next_nodes = {
[" PLUGIN-NAME "_NEXT_DROP] = \"error-drop\",
},
};
#endif /* CLIB_MARCH_VARIANT */
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: " capital-oh-en "
*
* Local Variables:
* eval: (c-set-style \"gnu\")
* End:
*/
")
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