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selftests: drivers: net: hw: Modify toeplitz.c to poll for packets

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Prior to this the receiver would sleep for the configured timeout,
then attempt to receive as many packets as possible. This would result
in a large burst of packets, and we don't necessarily need that many samples.

The tests now run faster.

Before

 ok 12 toeplitz.test.rps_udp_ipv6
 # Totals: pass:12 fail:0 xfail:0 xpass:0 skip:0 error:0

 real	0m54.792s
 user	0m12.486s
 sys	0m10.887s

After

 ok 12 toeplitz.test.rps_udp_ipv6
 # Totals: pass:12 fail:0 xfail:0 xpass:0 skip:0 error:0

 real	0m36.892s
 user	0m4.203s
 sys	0m8.314s

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Dimitri Daskalakis <dimitri.daskalakis1@gmail.com>
Link: https://patch.msgid.link/20260207013018.551347-1-dimitri.daskalakis1@gmail.com
[pabeni@redhat.com: whitespaces fixes]
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Dimitri Daskalakis 2026-02-06 17:30:18 -08:00 committed by Paolo Abeni
parent 70f1fbee85
commit ccb3272666
1 changed files with 22 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
tools/testing/selftests/drivers/net/hw/toeplitz.c
View File

@ -72,6 +72,8 @@
#define RPS_MAX_CPUS 16UL /* must be a power of 2 */
#define MIN_PKT_SAMPLES 40 /* minimum number of packets to receive */
/* configuration options (cmdline arguments) */
static uint16_t cfg_dport = 8000;
static int cfg_family = AF_INET6;
@ -251,15 +253,31 @@ static bool recv_block(struct ring_state *ring)
return true;
}
/* simple test: sleep once unconditionally and then process all rings */
/* simple test: process all rings until MIN_PKT_SAMPLES packets are received,
* or the test times out.
*/
static void process_rings(void)
{
struct timeval start, now;
bool pkts_found = true;
long elapsed_usec;
int i;
usleep(1000 * cfg_timeout_msec);
gettimeofday(&start, NULL);
for (i = 0; i < num_cpus; i++)
do {} while (recv_block(&rings[i]));
do {
if (!pkts_found)
usleep(100);
pkts_found = false;
for (i = 0; i < num_cpus; i++)
pkts_found |= recv_block(&rings[i]);
gettimeofday(&now, NULL);
elapsed_usec = (now.tv_sec - start.tv_sec) * 1000000 +
(now.tv_usec - start.tv_usec);
} while (frames_received - frames_nohash < MIN_PKT_SAMPLES &&
elapsed_usec < cfg_timeout_msec * 1000);
fprintf(stderr, "count: pass=%u nohash=%u fail=%u\n",
frames_received - frames_nohash - frames_error,