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selftests: xsk: Validate tx stats on tx thread

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Validate the tx stats on the Tx thread instead of the Rx
thread. Depending on your settings, you might not be allowed to query
the statistics of a socket you do not own, so better to do this on the
correct thread to start with.

Signed-off-by: Magnus Karlsson <magnus.karlsson@intel.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20210825093722.10219-11-magnus.karlsson@gmail.com
This commit is contained in:
Magnus Karlsson 2021-08-25 11:37:16 +02:00 committed by Alexei Starovoitov
parent 0d41f59f45
commit b04fdc4ce3
1 changed files with 41 additions and 14 deletions
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55
tools/testing/selftests/bpf/xdpxceiver.c
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@ -642,23 +642,22 @@ static void tx_only_all(struct ifobject *ifobject)
complete_tx_only_all(ifobject);
}
static void stats_validate(struct ifobject *ifobject)
static bool rx_stats_are_valid(struct ifobject *ifobject)
{
u32 xsk_stat = 0, expected_stat = opt_pkt_count;
struct xsk_socket *xsk = ifobject->xsk->xsk;
int fd = xsk_socket__fd(xsk);
struct xdp_statistics stats;
socklen_t optlen;
int err;
struct xsk_socket *xsk = stat_test_type == STAT_TEST_TX_INVALID ?
ifdict[!ifobject->ifdict_index]->xsk->xsk :
ifobject->xsk->xsk;
int fd = xsk_socket__fd(xsk);
unsigned long xsk_stat = 0, expected_stat = opt_pkt_count;
sigvar = 0;
optlen = sizeof(stats);
err = getsockopt(fd, SOL_XDP, XDP_STATISTICS, &stats, &optlen);
if (err)
return;
if (err) {
ksft_test_result_fail("ERROR: [%s] getsockopt(XDP_STATISTICS) error %u %s\n",
__func__, -err, strerror(-err));
return true;
}
if (optlen == sizeof(struct xdp_statistics)) {
switch (stat_test_type) {
@ -666,8 +665,7 @@ static void stats_validate(struct ifobject *ifobject)
xsk_stat = stats.rx_dropped;
break;
case STAT_TEST_TX_INVALID:
xsk_stat = stats.tx_invalid_descs;
break;
return true;
case STAT_TEST_RX_FULL:
xsk_stat = stats.rx_ring_full;
expected_stat -= RX_FULL_RXQSIZE;
@ -680,8 +678,33 @@ static void stats_validate(struct ifobject *ifobject)
}
if (xsk_stat == expected_stat)
sigvar = 1;
return true;
}
return false;
}
static void tx_stats_validate(struct ifobject *ifobject)
{
struct xsk_socket *xsk = ifobject->xsk->xsk;
int fd = xsk_socket__fd(xsk);
struct xdp_statistics stats;
socklen_t optlen;
int err;
optlen = sizeof(stats);
err = getsockopt(fd, SOL_XDP, XDP_STATISTICS, &stats, &optlen);
if (err) {
ksft_test_result_fail("ERROR: [%s] getsockopt(XDP_STATISTICS) error %u %s\n",
__func__, -err, strerror(-err));
return;
}
if (stats.tx_invalid_descs == opt_pkt_count)
return;
ksft_test_result_fail("ERROR: [%s] tx_invalid_descs incorrect. Got [%u] expected [%u]\n",
__func__, stats.tx_invalid_descs, opt_pkt_count);
}
static void thread_common_ops(struct ifobject *ifobject, void *bufs)
@ -767,6 +790,9 @@ static void *worker_testapp_validate_tx(void *arg)
print_verbose("Sending %d packets on interface %s\n", opt_pkt_count, ifobject->ifname);
tx_only_all(ifobject);
if (stat_test_type == STAT_TEST_TX_INVALID)
tx_stats_validate(ifobject);
testapp_cleanup_xsk_res(ifobject);
pthread_exit(NULL);
}
@ -792,7 +818,8 @@ static void *worker_testapp_validate_rx(void *arg)
if (test_type != TEST_TYPE_STATS) {
rx_pkt(ifobject->xsk, fds);
} else {
stats_validate(ifobject);
if (rx_stats_are_valid(ifobject))
break;
}
if (sigvar)
break;