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[ping] Allow termination after a specified number of packets

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Add the "-c <count>" option to the "ping" command, allowing for
automatic termination after a specified number of packets.

When a number of packets is specified:

  - if a serious error (i.e. length mismatch or content mismatch)
    occurs, then the ping will be immediately terminated with the relevant
    status code;

  - if at least one response is received successfully, and all errors
    are non-serious (i.e. timeouts or out-of-sequence responses), then
    the ping will be terminated after the final response (or timeout)
    with a success status;

  - if no responses are received successfully, then the ping will be
    terminated after the final timeout with ETIMEDOUT.

If no number of packets is specified, then the ping will continue
until manually interrupted.

Originally-implemented-by: Cedric Levasseur <cyr-ius@ipocus.net>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
This commit is contained in:
Michael Brown
2014-10-23 16:30:58 +01:00
parent d1afe731ea
commit 1c34ca70d1
5 changed files with 51 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
src/hci/commands/ping_cmd.c
View File

@@ -48,6 +48,8 @@ struct ping_options {
unsigned int size;
/** Timeout (in ms) */
unsigned long timeout;
/** Number of packets to send (or zero for no limit) */
unsigned int count;
};
/** "ping" option list */
@@ -56,6 +58,8 @@ static struct option_descriptor ping_opts[] = {
struct ping_options, size, parse_integer ),
OPTION_DESC ( "timeout", 't', required_argument,
struct ping_options, timeout, parse_timeout ),
OPTION_DESC ( "count", 'c', required_argument,
struct ping_options, count, parse_integer ),
};
/** "ping" command descriptor */
@@ -87,7 +91,8 @@ static int ping_exec ( int argc, char **argv ) {
hostname = argv[optind];
/* Ping */
if ( ( rc = ping ( hostname, opts.timeout, opts.size ) ) != 0 )
if ( ( rc = ping ( hostname, opts.timeout, opts.size,
opts.count ) ) != 0 )
return rc;
return 0;