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/*
* 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 <vlib/vlib.h>
#include <vnet/vnet.h>
#include <vnet/pg/pg.h>
#include <vppinfra/error.h>
#include <vnet/ip/ip.h>
#include <vnet/ip/ip6_hop_by_hop.h>
#include <ioam/export-common/ioam_export.h>
typedef struct
{
u32 next_index;
u32 flow_label;
} export_trace_t;
/* packet trace format function */
static u8 *
format_export_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 *);
export_trace_t *t = va_arg (*args, export_trace_t *);
s = format (s, "EXPORT: flow_label %d, next index %d",
t->flow_label, t->next_index);
return s;
}
vlib_node_registration_t export_node;
extern ioam_export_main_t ioam_export_main;
#define foreach_export_error \
_(RECORDED, "Packets recorded for export")
typedef enum
{
#define _(sym,str) EXPORT_ERROR_##sym,
foreach_export_error
#undef _
EXPORT_N_ERROR,
} export_error_t;
static char *export_error_strings[] = {
#define _(sym,string) string,
foreach_export_error
#undef _
};
typedef enum
{
EXPORT_NEXT_POP_HBYH,
EXPORT_N_NEXT,
} export_next_t;
always_inline void
copy3cachelines (void *dst, const void *src, size_t n)
{
#if 0
if (PREDICT_FALSE (n < DEFAULT_EXPORT_SIZE))
{
/* Copy only the first 1/2 cache lines whatever is available */
if (n >= 64)
clib_mov64 ((u8 *) dst, (const u8 *) src);
if (n >= 128)
clib_mov64 ((u8 *) dst + 64, (const u8 *) src + 64);
return;
}
clib_mov64 ((u8 *) dst, (const u8 *) src);
clib_mov64 ((u8 *) dst + 64, (const u8 *) src + 64);
clib_mov64 ((u8 *) dst + 128, (const u8 *) src + 128);
#endif
#if 1
u64 *copy_dst, *copy_src;
int i;
copy_dst = (u64 *) dst;
copy_src = (u64 *) src;
if (PREDICT_FALSE (n < DEFAULT_EXPORT_SIZE))
{
for (i = 0; i < n / 64; i++)
{
copy_dst[0] = copy_src[0];
copy_dst[1] = copy_src[1];
copy_dst[2] = copy_src[2];
copy_dst[3] = copy_src[3];
copy_dst[4] = copy_src[4];
copy_dst[5] = copy_src[5];
copy_dst[6] = copy_src[6];
copy_dst[7] = copy_src[7];
copy_dst += 8;
copy_src += 8;
}
return;
}
for (i = 0; i < 3; i++)
{
copy_dst[0] = copy_src[0];
copy_dst[1] = copy_src[1];
copy_dst[2] = copy_src[2];
copy_dst[3] = copy_src[3];
copy_dst[4] = copy_src[4];
copy_dst[5] = copy_src[5];
copy_dst[6] = copy_src[6];
copy_dst[7] = copy_src[7];
copy_dst += 8;
copy_src += 8;
}
#endif
}
static void
ip6_export_fixup_func (vlib_buffer_t * export_buf, vlib_buffer_t * pak_buf)
{
ip6_header_t *ip6_temp =
(ip6_header_t *) (export_buf->data + export_buf->current_length);
u32 flow_label_temp =
clib_net_to_host_u32(ip6_temp->ip_version_traffic_class_and_flow_label)
& 0xFFF00000;
flow_label_temp |=
IOAM_MASK_DECAP_BIT((vnet_buffer(pak_buf)->l2_classify.opaque_index));
ip6_temp->ip_version_traffic_class_and_flow_label =
clib_host_to_net_u32(flow_label_temp);
}
static uword
ip6_export_node_fn (vlib_main_t * vm,
vlib_node_runtime_t * node, vlib_frame_t * frame)
{
ioam_export_main_t *em = &ioam_export_main;
ioam_export_node_common(em, vm, node, frame, ip6_header_t, payload_length,
ip_version_traffic_class_and_flow_label,
EXPORT_NEXT_POP_HBYH, ip6_export_fixup_func);
return frame->n_vectors;
}
/*
* Node for IP6 export
*/
VLIB_REGISTER_NODE (export_node) =
{
.function = ip6_export_node_fn,
.name = "ip6-export",
.vector_size = sizeof (u32),
.format_trace = format_export_trace,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN (export_error_strings),
.error_strings = export_error_strings,
.n_next_nodes = EXPORT_N_NEXT,
/* edit / add dispositions here */
.next_nodes =
{
[EXPORT_NEXT_POP_HBYH] = "ip6-pop-hop-by-hop"
},
};
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