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vppinfra: add mapped pcap file support

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Type: feature

Change-Id: Ic720d56a6f8901efde2a58519bc9aa553205a9a6
Signed-off-by: Gary Boon <gboon@cisco.com>
Signed-off-by: Dave Barach <dave@barachs.net>
This commit is contained in:
Gary Boon
2019-07-22 10:57:56 -04:00
committed by Dave Barach
parent 3940de3672
commit a9ed6f7020
6 changed files with 822 additions and 0 deletions
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1
src/plugins/unittest/CMakeLists.txt
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@ -28,6 +28,7 @@ add_vpp_plugin(unittest
lisp_cp_test.c
llist_test.c
mactime_test.c
mpcap_node.c
mfib_test.c
punt_test.c
rbtree_test.c

260
src/plugins/unittest/mpcap_node.c Normal file
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@ -0,0 +1,260 @@
/*
* mpcap_node.c - unit-test plugin mapped pcap test node
*
* 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 <vppinfra/mpcap.h>
#include <vnet/ethernet/ethernet.h>
static mpcap_main_t test_mpcap_main = {
.file_name = "/tmp/mpcap_unittest.pcap",
.n_packets_to_capture = 15,
.packet_type = MPCAP_PACKET_TYPE_ethernet,
};
typedef struct
{
u32 sw_if_index;
u32 next_index;
} mpcap_trace_t;
#ifndef CLIB_MARCH_VARIANT
/* packet trace format function */
static u8 *
format_mpcap_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 *);
mpcap_trace_t *t = va_arg (*args, mpcap_trace_t *);
s = format (s, "MPCAP: sw_if_index %d, next index %d\n",
t->sw_if_index, t->next_index);
return s;
}
vlib_node_registration_t mpcap_node;
#endif /* CLIB_MARCH_VARIANT */
#define foreach_mpcap_error \
_(PROCESSED, "Mapped pcap packets processed")
typedef enum
{
#define _(sym,str) MPCAP_ERROR_##sym,
foreach_mpcap_error
#undef _
MPCAP_N_ERROR,
} mpcap_error_t;
#ifndef CLIB_MARCH_VARIANT
static char *mpcap_error_strings[] = {
#define _(sym,string) string,
foreach_mpcap_error
#undef _
};
#endif /* CLIB_MARCH_VARIANT */
typedef enum
{
MPCAP_NEXT_DROP,
MPCAP_N_NEXT,
} mpcap_next_t;
always_inline uword
mpcap_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;
mpcap_main_t *mm = &test_mpcap_main;
int i = 0;
f64 now = vlib_time_now (vm);
u32 error_index = node->errors[MPCAP_ERROR_PROCESSED];
if (!(mm->flags & MPCAP_FLAG_INIT_DONE))
{
clib_error_t *error;
error = mpcap_init (mm);
if (error)
clib_error_report (error);
mm->flags |= MPCAP_FLAG_INIT_DONE;
}
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);
}
next[0] = 0;
next[1] = 0;
next[2] = 0;
next[3] = 0;
b[0]->error = error_index;
b[1]->error = error_index;
b[2]->error = error_index;
b[3]->error = error_index;
mpcap_add_buffer (mm, vm, now, from[i++],
vlib_buffer_length_in_chain (vm, b[0]));
mpcap_add_buffer (mm, vm, now, from[i++],
vlib_buffer_length_in_chain (vm, b[1]));
mpcap_add_buffer (mm, vm, now, from[i++],
vlib_buffer_length_in_chain (vm, b[2]));
mpcap_add_buffer (mm, vm, now, from[i++],
vlib_buffer_length_in_chain (vm, b[3]));
if (is_trace)
{
if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
{
mpcap_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)
{
mpcap_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)
{
mpcap_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)
{
mpcap_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)
{
mpcap_add_buffer (mm, vm, now, from[i++],
vlib_buffer_length_in_chain (vm, b[0]));
next[0] = 0;
b[0]->error = error_index;
if (is_trace)
{
if (b[0]->flags & VLIB_BUFFER_IS_TRACED)
{
mpcap_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 (mpcap_node) (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
if (PREDICT_FALSE (node->flags & VLIB_NODE_FLAG_TRACE))
return mpcap_inline (vm, node, frame, 1 /* is_ip4 */ ,
1 /* is_trace */ );
else
return mpcap_inline (vm, node, frame, 1 /* is_ip4 */ ,
0 /* is_trace */ );
}
/* *INDENT-OFF* */
#ifndef CLIB_MARCH_VARIANT
VLIB_REGISTER_NODE (mpcap_node) =
{
.name = "mpcap-unittest",
.vector_size = sizeof (u32),
.format_trace = format_mpcap_trace,
.format_buffer = format_ethernet_header_with_length,
.unformat_buffer = unformat_ethernet_header,
.type = VLIB_NODE_TYPE_INTERNAL,
.n_errors = ARRAY_LEN(mpcap_error_strings),
.error_strings = mpcap_error_strings,
.n_next_nodes = MPCAP_N_NEXT,
/* edit / add dispositions here */
.next_nodes =
{
[MPCAP_NEXT_DROP] = "error-drop",
},
};
static clib_error_t *
mpcap_node_init (vlib_main_t *vm)
{
/* So we can send ethernet/IP packets from the pg... */
ethernet_setup_node (vm, mpcap_node.index);
return 0;
}
VLIB_INIT_FUNCTION (mpcap_node_init);
#endif /* CLIB_MARCH_VARIANT */
/* *INDENT-ON* */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/

2
src/vppinfra/CMakeLists.txt
View File

@ -56,6 +56,7 @@ set(VPPINFRA_SRCS
macros.c
maplog.c
mhash.c
mpcap.c
pcap.c
pmalloc.c
pool.c
@ -136,6 +137,7 @@ set(VPPINFRA_HEADERS
mhash.h
mheap_bootstrap.h
mheap.h
mpcap.h
os.h
pcap.h
pcap_funcs.h

247
src/vppinfra/mpcap.c Normal file
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@ -0,0 +1,247 @@
/*
* Copyright (c) 2019 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 <sys/fcntl.h>
#include <vppinfra/mpcap.h>
/*
* Unfortunately, the "make test" infra won't work with mapped pcap files.
* Given enough work [mostly in .py code], one could fix that.
*/
/**
* @file
* @brief mapped pcap file support
*
* Usage:
*
* <code><pre>
* \#include <vnet/unix/mpcap.h>
*
* static mpcap_main_t mpcap = {
* .file_name = "/tmp/ip4",
* .n_packets_to_capture = 2,
* .packet_type = MPCAP_PACKET_TYPE_ip,
* };
* </pre></code>
*
* To add a buffer:
*
* <code><pre>mpcap_add_buffer (&mpcap, vm, pi0, 128);</pre></code>
*
* File will be written after @c n_packets_to_capture
* or call to mpcap_close
*
*/
/**
* @brief Close a mapped pcap file
* @param mpcap_main_t * pm
* @return rc - clib_error_t
*
*/
clib_error_t *
mpcap_close (mpcap_main_t * pm)
{
u64 actual_size = pm->current_va - pm->file_baseva;
/* Not open? Done... */
if ((pm->flags & MPCAP_FLAG_INIT_DONE) == 0)
return 0;
(void) munmap (pm->file_baseva, pm->max_file_size);
pm->file_baseva = 0;
pm->current_va = 0;
pm->flags &= ~MPCAP_FLAG_INIT_DONE;
if ((pm->flags & MPCAP_FLAG_WRITE_ENABLE) == 0)
return 0;
if (truncate (pm->file_name, actual_size) < 0)
clib_unix_warning ("setting file size to %llu", actual_size);
return 0;
}
/**
* @brief Initialize a mapped pcap file
* @param mpcap_main_t * pm
* @return rc - clib_error_t
*
*/
clib_error_t *
mpcap_init (mpcap_main_t * pm)
{
mpcap_file_header_t *fh;
u8 zero = 0;
int fd;
if (pm->flags & MPCAP_FLAG_INIT_DONE)
return 0;
if (!pm->file_name)
pm->file_name = "/tmp/vnet.mpcap";
if (pm->flags & MPCAP_FLAG_THREAD_SAFE)
clib_spinlock_init (&pm->lock);
fd = open (pm->file_name, O_CREAT | O_TRUNC | O_RDWR, 0664);
if (fd < 0)
{
return clib_error_return_unix (0, "failed to create `%s'",
pm->file_name);
}
if (pm->max_file_size == 0ULL)
pm->max_file_size = MPCAP_DEFAULT_FILE_SIZE;
/* Round to a multiple of the page size */
pm->max_file_size += (u64) clib_mem_get_page_size ();
pm->max_file_size &= ~(u64) clib_mem_get_page_size ();
/* Set file size. */
if (lseek (fd, pm->max_file_size - 1, SEEK_SET) == (off_t) - 1)
{
close (fd);
(void) unlink (pm->file_name);
return clib_error_return_unix (0, "file size seek");
}
if (write (fd, &zero, 1) != 1)
{
close (fd);
(void) unlink (pm->file_name);
return clib_error_return_unix (0, "file size write");
}
pm->file_baseva = mmap (0, pm->max_file_size,
PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
if (pm->file_baseva == (u8 *) MAP_FAILED)
{
clib_error_t *error = clib_error_return_unix (0, "mmap");
close (fd);
(void) unlink (pm->file_name);
return error;
}
(void) close (fd);
pm->flags |= MPCAP_FLAG_INIT_DONE | MPCAP_FLAG_WRITE_ENABLE;
pm->n_packets_captured = 0;
pm->n_mpcap_data_written = 0;
/* Initialize file header */
fh = pm->file_header = (mpcap_file_header_t *) pm->file_baseva;
pm->current_va = pm->file_baseva + sizeof (*fh);
fh->magic = 0xa1b2c3d4;
fh->major_version = 2;
fh->minor_version = 4;
fh->time_zone = 0;
fh->max_packet_size_in_bytes = 1 << 16;
fh->packet_type = pm->packet_type;
return 0;
}
/**
* @brief mmap a mapped pcap file, e.g. to read from another process
* @param pcap_main_t *pm
* @return rc - clib_error_t
*/
clib_error_t *
mpcap_map (mpcap_main_t * pm)
{
clib_error_t *error = 0;
int fd = -1;
mpcap_file_header_t *fh;
mpcap_packet_header_t *ph;
struct stat statb;
u64 packets_read = 0;
u32 min_packet_bytes = ~0;
u32 max_packet_bytes = 0;
if (stat (pm->file_name, &statb) < 0)
{
error = clib_error_return_unix (0, "stat `%s'", pm->file_name);
goto done;
}
fd = open (pm->file_name, O_RDONLY);
if (fd < 0)
{
error = clib_error_return_unix (0, "open `%s'", pm->file_name);
goto done;
}
if (statb.st_size < sizeof (*fh) + sizeof (*ph))
{
error = clib_error_return_unix (0, "`%s' is too short", pm->file_name);
goto done;
}
pm->max_file_size = statb.st_size;
pm->file_baseva = mmap (0, statb.st_size, PROT_READ, MAP_SHARED, fd, 0);
if (pm->file_baseva == (u8 *) MAP_FAILED)
{
error = clib_error_return_unix (0, "mmap");
goto done;
}
pm->flags |= MPCAP_FLAG_INIT_DONE;
fh = pm->file_header = (mpcap_file_header_t *) pm->file_baseva;
ph = (mpcap_packet_header_t *) (fh + 1);
if (fh->magic != 0xa1b2c3d4)
{
error = clib_error_return (0, "bad magic `%s'", pm->file_name);
goto done;
}
/* for the client's convenience, count packets; compute min/max sizes */
while (ph < (mpcap_packet_header_t *) pm->file_baseva + pm->max_file_size)
{
if (ph->n_packet_bytes_stored_in_file == 0)
break;
packets_read++;
min_packet_bytes =
ph->n_packet_bytes_stored_in_file <
min_packet_bytes ? ph->n_packet_bytes_stored_in_file :
min_packet_bytes;
max_packet_bytes =
ph->n_packet_bytes_stored_in_file >
max_packet_bytes ? ph->n_packet_bytes_stored_in_file :
max_packet_bytes;
ph = (mpcap_packet_header_t *)
(((u8 *) (ph)) + sizeof (*ph) + ph->n_packet_bytes_stored_in_file);
}
pm->packets_read = packets_read;
pm->min_packet_bytes = min_packet_bytes;
pm->max_packet_bytes = max_packet_bytes;
done:
if (fd >= 0)
close (fd);
return error;
}
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/

257
src/vppinfra/mpcap.h Normal file
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@ -0,0 +1,257 @@
/*
* Copyright (c) 2018 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.
*/
/**
* @file
* @brief MPCAP utility definitions
*/
#ifndef included_vnet_mpcap_h
#define included_vnet_mpcap_h
#include <vlib/vlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <vppinfra/time_range.h>
/**
* @brief Packet types supported by MPCAP
*
* null 0
* ethernet 1
* ppp 9
* ip 12
* hdlc 104
*/
#define foreach_vnet_mpcap_packet_type \
_ (null, 0) \
_ (ethernet, 1) \
_ (ppp, 9) \
_ (ip, 12) \
_ (hdlc, 104)
typedef enum
{
#define _(f,n) MPCAP_PACKET_TYPE_##f = (n),
foreach_vnet_mpcap_packet_type
#undef _
} mpcap_packet_type_t;
#define foreach_mpcap_file_header \
/** 0xa1b2c3d4 host byte order. \
0xd4c3b2a1 => need to byte swap everything. */ \
_ (u32, magic) \
\
/** Currently major 2 minor 4. */ \
_ (u16, major_version) \
_ (u16, minor_version) \
\
/** 0 for GMT. */ \
_ (u32, time_zone) \
\
/** Accuracy of timestamps. Typically set to 0. */ \
_ (u32, sigfigs) \
\
/** Size of largest packet in file. */ \
_ (u32, max_packet_size_in_bytes) \
\
/** One of vnet_mpcap_packet_type_t. */ \
_ (u32, packet_type)
/** File header struct */
typedef struct
{
#define _(t, f) t f;
foreach_mpcap_file_header
#undef _
} mpcap_file_header_t;
#define foreach_mpcap_packet_header \
/** Time stamp in seconds */ \
_ (u32, time_in_sec) \
/** Time stamp in microseconds. */ \
_ (u32, time_in_usec) \
\
/** Number of bytes stored in file. */ \
_ (u32, n_packet_bytes_stored_in_file) \
/** Number of bytes in actual packet. */ \
_ (u32, n_bytes_in_packet)
/** Packet header. */
typedef struct
{
#define _(t, f) t f;
foreach_mpcap_packet_header
#undef _
/** Packet data follows. */
u8 data[0];
} mpcap_packet_header_t;
/**
* @brief MPCAP main state data structure
*/
typedef struct
{
/** File name of mpcap output. */
char *file_name;
/** spinlock, initialized if flagged MPCAP_FLAG_THREAD_SAFE */
clib_spinlock_t lock;
/** Number of packets to capture. */
u32 n_packets_to_capture;
/** Packet type */
mpcap_packet_type_t packet_type;
/** Maximum file size */
u64 max_file_size;
/** Base address */
u8 *file_baseva;
/** current memory address */
u8 *current_va;
/** Number of packets currently captured. */
u32 n_packets_captured;
/** Pointer to file header in svm, for ease of updating */
mpcap_file_header_t *file_header;
/** flags */
u32 flags;
#define MPCAP_FLAG_INIT_DONE (1 << 0)
#define MPCAP_FLAG_THREAD_SAFE (1 << 1)
#define MPCAP_FLAG_WRITE_ENABLE (1 << 2)
/** Bytes written */
u32 n_mpcap_data_written;
/** Vector of mpcap data. */
u8 *mpcap_data;
/** Packets in mapped mpcap file. */
u64 packets_read;
/** Min/Max Packet bytes */
u32 min_packet_bytes, max_packet_bytes;
} mpcap_main_t;
/* Some sensible default size */
#define MPCAP_DEFAULT_FILE_SIZE (10<<20)
/** initialize a mpcap file (for writing) */
clib_error_t *mpcap_init (mpcap_main_t * pm);
/** Flush / unmap a mpcap file */
clib_error_t *mpcap_close (mpcap_main_t * pm);
/** mmap a mpcap data file. */
clib_error_t *mpcap_map (mpcap_main_t * pm);
/**
* @brief Add packet
*
* @param *pm - mpcap_main_t
* @param time_now - f64
* @param n_bytes_in_trace - u32
* @param n_bytes_in_packet - u32
*
* @return Packet Data
*
*/
static inline void *
mpcap_add_packet (mpcap_main_t * pm,
f64 time_now, u32 n_bytes_in_trace, u32 n_bytes_in_packet)
{
mpcap_packet_header_t *h;
u8 *d;
/* File already closed? */
if (PREDICT_FALSE (pm->flags & MPCAP_FLAG_INIT_DONE) == 0)
return 0;
d = pm->current_va;
pm->current_va += sizeof (h[0]) + n_bytes_in_trace;
/* Out of space? */
if (PREDICT_FALSE (pm->current_va >= pm->file_baseva + pm->max_file_size))
return 0;
h = (void *) (d);
h->time_in_sec = time_now;
h->time_in_usec = 1e6 * (time_now - h->time_in_sec);
h->n_packet_bytes_stored_in_file = n_bytes_in_trace;
h->n_bytes_in_packet = n_bytes_in_packet;
pm->n_packets_captured++;
return h->data;
}
/**
* @brief Add buffer (vlib_buffer_t) to the trace
*
* @param *pm - mpcap_main_t
* @param *vm - vlib_main_t
* @param time_now - f64
* @param buffer_index - u32
* @param n_bytes_in_trace - u32
*
*/
static inline void
mpcap_add_buffer (mpcap_main_t * pm,
vlib_main_t * vm,
f64 time_now, u32 buffer_index, u32 n_bytes_in_trace)
{
vlib_buffer_t *b = vlib_get_buffer (vm, buffer_index);
u32 n = vlib_buffer_length_in_chain (vm, b);
i32 n_left = clib_min (n_bytes_in_trace, n);
void *d;
clib_spinlock_lock_if_init (&pm->lock);
d = mpcap_add_packet (pm, time_now, n_left, n);
if (PREDICT_FALSE (d == 0))
{
mpcap_close (pm);
clib_spinlock_unlock_if_init (&pm->lock);
return;
}
while (1)
{
u32 copy_length = clib_min ((u32) n_left, b->current_length);
clib_memcpy (d, b->data + b->current_data, copy_length);
n_left -= b->current_length;
if (n_left <= 0)
break;
d += b->current_length;
ASSERT (b->flags & VLIB_BUFFER_NEXT_PRESENT);
b = vlib_get_buffer (vm, b->next_buffer);
}
if (pm->n_packets_captured >= pm->n_packets_to_capture)
mpcap_close (pm);
clib_spinlock_unlock_if_init (&pm->lock);
}
#endif /* included_vnet_mpcap_h */
/*
* fd.io coding-style-patch-verification: ON
*
* Local Variables:
* eval: (c-set-style "gnu")
* End:
*/

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test/test_mpcap.py Normal file
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#!/usr/bin/env python
import unittest
from framework import VppTestCase, VppTestRunner, running_extended_tests
from vpp_ip_route import VppIpTable, VppIpRoute, VppRoutePath
import os
class TestMpcap(VppTestCase):
""" Mpcap Unit Test Cases """
@classmethod
def setUpClass(cls):
super(TestMpcap, cls).setUpClass()
@classmethod
def tearDownClass(cls):
super(TestMpcap, cls).tearDownClass()
def setUp(self):
super(TestMpcap, self).setUp()
def tearDown(self):
super(TestMpcap, self).tearDown()
def test_mpcap_unittest(self):
""" Mapped pcap file test """
cmds = ["packet-generator new {\n"
" name mpcap\n"
" limit 15\n"
" size 128-128\n"
" interface local0\n"
" node mpcap-unittest\n"
" data {\n"
" IP6: 00:d0:2d:5e:86:85 -> 00:0d:ea:d0:00:00\n"
" ICMP: db00::1 -> db00::2\n"
" incrementing 30\n"
" }\n",
"trace add pg-input 15",
"pa en",
"show trace",
"show error"]
for cmd in cmds:
self.logger.info(self.vapi.cli(cmd))
size = os.path.getsize("/tmp/mpcap_unittest.pcap")
os.remove("/tmp/mpcap_unittest.pcap")
if size != 2184:
self.logger.critical("BUG: file size %d not 2184" % size)
self.assertNotIn('WrongMPCAPFileSize', 'WrongMPCAPFileSize')
if __name__ == '__main__':
unittest.main(testRunner=VppTestRunner)