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selftests: ncdevmem: Run selftest when none of the -s or -c has been provided

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This will be used as a 'probe' mode in the selftest to check whether
the device supports the devmem or not. Use hard-coded queue layout
(two last queues) and prevent user from passing custom -q and/or -t.

Reviewed-by: Mina Almasry <almasrymina@google.com>
Reviewed-by: Joe Damato <jdamato@fastly.com>
Signed-off-by: Stanislav Fomichev <sdf@fomichev.me>
Link: https://patch.msgid.link/20241107181211.3934153-11-sdf@fomichev.me
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Stanislav Fomichev 2024-11-07 10:12:09 -08:00 committed by Jakub Kicinski
parent d4ef05d211
commit 77f870a000
1 changed files with 39 additions and 10 deletions
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49
tools/testing/selftests/net/ncdevmem.c
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@ -76,7 +76,7 @@ static char *client_ip;
static char *port;
static size_t do_validation;
static int start_queue = -1;
static int num_queues = 1;
static int num_queues = -1;
static char *ifname;
static unsigned int ifindex;
static unsigned int dmabuf_id;
@ -727,19 +727,38 @@ int main(int argc, char *argv[])
}
}
if (!server_ip)
error(1, 0, "Missing -s argument\n");
if (!port)
error(1, 0, "Missing -p argument\n");
if (!ifname)
error(1, 0, "Missing -f argument\n");
ifindex = if_nametoindex(ifname);
if (start_queue < 0) {
start_queue = rxq_num(ifindex) - 1;
if (!server_ip && !client_ip) {
if (start_queue < 0 && num_queues < 0) {
num_queues = rxq_num(ifindex);
if (num_queues < 0)
error(1, 0, "couldn't detect number of queues\n");
if (num_queues < 2)
error(1, 0,
"number of device queues is too low\n");
/* make sure can bind to multiple queues */
start_queue = num_queues / 2;
num_queues /= 2;
}
if (start_queue < 0 || num_queues < 0)
error(1, 0, "Both -t and -q are required\n");
run_devmem_tests();
return 0;
}
if (start_queue < 0 && num_queues < 0) {
num_queues = rxq_num(ifindex);
if (num_queues < 2)
error(1, 0, "number of device queues is too low\n");
num_queues = 1;
start_queue = rxq_num(ifindex) - num_queues;
if (start_queue < 0)
error(1, 0, "couldn't detect number of queues\n");
@ -750,7 +769,17 @@ int main(int argc, char *argv[])
for (; optind < argc; optind++)
fprintf(stderr, "extra arguments: %s\n", argv[optind]);
run_devmem_tests();
if (start_queue < 0)
error(1, 0, "Missing -t argument\n");
if (num_queues < 0)
error(1, 0, "Missing -q argument\n");
if (!server_ip)
error(1, 0, "Missing -s argument\n");
if (!port)
error(1, 0, "Missing -p argument\n");
mem = provider->alloc(getpagesize() * NUM_PAGES);
ret = is_server ? do_server(mem) : 1;