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1d4db589
编写于
8月 10, 2017
作者:
armink_ztl
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电子邮件补丁
差异文件
[Net] Add ping test app to LwIP 2.0.2.
上级
191f8476
变更
1
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1 changed file
with
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components/net/lwip-2.0.2/apps/ping.c
components/net/lwip-2.0.2/apps/ping.c
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components/net/lwip-2.0.2/apps/ping.c
0 → 100644
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1d4db589
/*
* netutils: ping implementation
*/
#include "lwip/opt.h"
#include "lwip/mem.h"
#include "lwip/icmp.h"
#include "lwip/netif.h"
#include "lwip/sys.h"
#include "lwip/sockets.h"
#include "lwip/inet.h"
#include "lwip/inet_chksum.h"
#include "lwip/ip.h"
/**
* PING_DEBUG: Enable debugging for PING.
*/
#ifndef PING_DEBUG
#define PING_DEBUG LWIP_DBG_ON
#endif
/** ping receive timeout - in milliseconds */
#define PING_RCV_TIMEO rt_tick_from_millisecond(2000)
/** ping delay - in milliseconds */
#define PING_DELAY rt_tick_from_millisecond(1000)
/** ping identifier - must fit on a u16_t */
#ifndef PING_ID
#define PING_ID 0xAFAF
#endif
/** ping additional data size to include in the packet */
#ifndef PING_DATA_SIZE
#define PING_DATA_SIZE 32
#endif
/* ping variables */
static
u16_t
ping_seq_num
;
struct
_ip_addr
{
rt_uint8_t
addr0
,
addr1
,
addr2
,
addr3
;
};
/** Prepare a echo ICMP request */
static
void
ping_prepare_echo
(
struct
icmp_echo_hdr
*
iecho
,
u16_t
len
)
{
size_t
i
;
size_t
data_len
=
len
-
sizeof
(
struct
icmp_echo_hdr
);
ICMPH_TYPE_SET
(
iecho
,
ICMP_ECHO
);
ICMPH_CODE_SET
(
iecho
,
0
);
iecho
->
chksum
=
0
;
iecho
->
id
=
PING_ID
;
iecho
->
seqno
=
htons
(
++
ping_seq_num
);
/* fill the additional data buffer with some data */
for
(
i
=
0
;
i
<
data_len
;
i
++
)
{
((
char
*
)
iecho
)[
sizeof
(
struct
icmp_echo_hdr
)
+
i
]
=
(
char
)
i
;
}
iecho
->
chksum
=
inet_chksum
(
iecho
,
len
);
}
/* Ping using the socket ip */
static
err_t
ping_send
(
int
s
,
ip_addr_t
*
addr
,
int
size
)
{
int
err
;
struct
icmp_echo_hdr
*
iecho
;
struct
sockaddr_in
to
;
size_t
ping_size
=
sizeof
(
struct
icmp_echo_hdr
)
+
size
;
LWIP_ASSERT
(
"ping_size is too big"
,
ping_size
<=
0xffff
);
iecho
=
rt_malloc
(
ping_size
);
if
(
iecho
==
RT_NULL
)
{
return
ERR_MEM
;
}
ping_prepare_echo
(
iecho
,
(
u16_t
)
ping_size
);
to
.
sin_len
=
sizeof
(
to
);
to
.
sin_family
=
AF_INET
;
to
.
sin_addr
.
s_addr
=
addr
->
addr
;
err
=
lwip_sendto
(
s
,
iecho
,
ping_size
,
0
,
(
struct
sockaddr
*
)
&
to
,
sizeof
(
to
));
rt_free
(
iecho
);
return
(
err
==
ping_size
?
ERR_OK
:
ERR_VAL
);
}
static
int
ping_recv
(
int
s
,
int
*
ttl
)
{
char
buf
[
64
];
int
fromlen
=
sizeof
(
struct
sockaddr_in
),
len
;
struct
sockaddr_in
from
;
struct
ip_hdr
*
iphdr
;
struct
icmp_echo_hdr
*
iecho
;
while
((
len
=
lwip_recvfrom
(
s
,
buf
,
sizeof
(
buf
),
0
,
(
struct
sockaddr
*
)
&
from
,
(
socklen_t
*
)
&
fromlen
))
>
0
)
{
if
(
len
>=
(
sizeof
(
struct
ip_hdr
)
+
sizeof
(
struct
icmp_echo_hdr
)))
{
iphdr
=
(
struct
ip_hdr
*
)
buf
;
iecho
=
(
struct
icmp_echo_hdr
*
)(
buf
+
(
IPH_HL
(
iphdr
)
*
4
));
if
((
iecho
->
id
==
PING_ID
)
&&
(
iecho
->
seqno
==
htons
(
ping_seq_num
)))
{
*
ttl
=
iphdr
->
_ttl
;
return
len
;
}
}
}
return
len
;
}
rt_err_t
ping
(
char
*
target
,
rt_uint32_t
times
,
rt_size_t
size
)
{
int
s
,
ttl
,
recv_len
;
struct
timeval
timeout
=
{
PING_RCV_TIMEO
/
RT_TICK_PER_SECOND
,
PING_RCV_TIMEO
%
RT_TICK_PER_SECOND
};
ip_addr_t
ping_target
;
rt_uint32_t
send_times
;
rt_tick_t
recv_start_tick
;
struct
_ip_addr
{
rt_uint8_t
addr0
,
addr1
,
addr2
,
addr3
;
}
*
addr
;
send_times
=
0
;
ping_seq_num
=
0
;
if
(
size
==
0
)
size
=
PING_DATA_SIZE
;
if
(
inet_aton
(
target
,
&
ping_target
)
==
0
)
{
rt_kprintf
(
"ping: unknown host %s
\n
"
,
target
);
return
-
RT_ERROR
;
}
addr
=
(
struct
_ip_addr
*
)
&
ping_target
;
if
((
s
=
lwip_socket
(
AF_INET
,
SOCK_RAW
,
IP_PROTO_ICMP
))
<
0
)
{
rt_kprintf
(
"ping: create socket failled
\n
"
);
return
-
RT_ERROR
;
}
lwip_setsockopt
(
s
,
SOL_SOCKET
,
SO_RCVTIMEO
,
&
timeout
,
sizeof
(
struct
timeval
));
while
(
1
)
{
if
(
ping_send
(
s
,
&
ping_target
,
size
)
==
ERR_OK
)
{
recv_start_tick
=
rt_tick_get
();
if
((
recv_len
=
ping_recv
(
s
,
&
ttl
))
>=
0
)
{
rt_kprintf
(
"%d bytes from %d.%d.%d.%d icmp_seq=%d ttl=%d time=%d ticks
\n
"
,
recv_len
,
addr
->
addr0
,
addr
->
addr1
,
addr
->
addr2
,
addr
->
addr3
,
send_times
,
ttl
,
rt_tick_get
()
-
recv_start_tick
);
}
else
{
rt_kprintf
(
"From %d.%d.%d.%d icmp_seq=%d timeout
\n
"
,
addr
->
addr0
,
addr
->
addr1
,
addr
->
addr2
,
addr
->
addr3
,
send_times
);
}
}
else
{
rt_kprintf
(
"Send %d.%d.%d.%d - error
\n
"
,
addr
->
addr0
,
addr
->
addr1
,
addr
->
addr2
,
addr
->
addr3
);
}
send_times
++
;
if
(
send_times
>=
times
)
break
;
/* send ping times reached, stop */
rt_thread_delay
(
PING_DELAY
);
/* take a delay */
}
lwip_close
(
s
);
return
RT_EOK
;
}
#ifdef RT_USING_FINSH
#include <finsh.h>
FINSH_FUNCTION_EXPORT
(
ping
,
ping
network
host
);
int
cmd_ping
(
int
argc
,
char
**
argv
)
{
if
(
argc
==
1
)
{
rt_kprintf
(
"Please input: ping <host address>
\n
"
);
}
else
{
ping
(
argv
[
1
],
4
,
0
);
}
return
0
;
}
FINSH_FUNCTION_EXPORT_ALIAS
(
cmd_ping
,
__cmd_ping
,
ping
network
host
);
#endif
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