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Diffstat (limited to 'tools/testing/selftests/bpf/xskxceiver.c')
-rw-r--r--tools/testing/selftests/bpf/xskxceiver.c123
1 files changed, 113 insertions, 10 deletions
diff --git a/tools/testing/selftests/bpf/xskxceiver.c b/tools/testing/selftests/bpf/xskxceiver.c
index b1102ee13faa..2eac0895b0a1 100644
--- a/tools/testing/selftests/bpf/xskxceiver.c
+++ b/tools/testing/selftests/bpf/xskxceiver.c
@@ -81,6 +81,7 @@
#include <linux/mman.h>
#include <linux/netdev.h>
#include <linux/bitmap.h>
+#include <linux/ethtool.h>
#include <arpa/inet.h>
#include <net/if.h>
#include <locale.h>
@@ -105,11 +106,15 @@
#include "../kselftest.h"
#include "xsk_xdp_common.h"
+#include <network_helpers.h>
+
static bool opt_verbose;
static bool opt_print_tests;
static enum test_mode opt_mode = TEST_MODE_ALL;
static u32 opt_run_test = RUN_ALL_TESTS;
+void test__fail(void) { /* for network_helpers.c */ }
+
static void __exit_with_error(int error, const char *file, const char *func, int line)
{
ksft_test_result_fail("[%s:%s:%i]: ERROR: %d/\"%s\"\n", file, func, line, error,
@@ -239,7 +244,7 @@ static void enable_busy_poll(struct xsk_socket_info *xsk)
(void *)&sock_opt, sizeof(sock_opt)) < 0)
exit_with_error(errno);
- sock_opt = BATCH_SIZE;
+ sock_opt = xsk->batch_size;
if (setsockopt(xsk_socket__fd(xsk->xsk), SOL_SOCKET, SO_BUSY_POLL_BUDGET,
(void *)&sock_opt, sizeof(sock_opt)) < 0)
exit_with_error(errno);
@@ -409,6 +414,33 @@ static void parse_command_line(struct ifobject *ifobj_tx, struct ifobject *ifobj
}
}
+static int set_ring_size(struct ifobject *ifobj)
+{
+ int ret;
+ u32 ctr = 0;
+
+ while (ctr++ < SOCK_RECONF_CTR) {
+ ret = set_hw_ring_size(ifobj->ifname, &ifobj->ring);
+ if (!ret)
+ break;
+
+ /* Retry if it fails */
+ if (ctr >= SOCK_RECONF_CTR || errno != EBUSY)
+ return -errno;
+
+ usleep(USLEEP_MAX);
+ }
+
+ return ret;
+}
+
+static int hw_ring_size_reset(struct ifobject *ifobj)
+{
+ ifobj->ring.tx_pending = ifobj->set_ring.default_tx;
+ ifobj->ring.rx_pending = ifobj->set_ring.default_rx;
+ return set_ring_size(ifobj);
+}
+
static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
struct ifobject *ifobj_rx)
{
@@ -439,6 +471,7 @@ static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
for (j = 0; j < MAX_SOCKETS; j++) {
memset(&ifobj->xsk_arr[j], 0, sizeof(ifobj->xsk_arr[j]));
ifobj->xsk_arr[j].rxqsize = XSK_RING_CONS__DEFAULT_NUM_DESCS;
+ ifobj->xsk_arr[j].batch_size = DEFAULT_BATCH_SIZE;
if (i == 0)
ifobj->xsk_arr[j].pkt_stream = test->tx_pkt_stream_default;
else
@@ -451,12 +484,16 @@ static void __test_spec_init(struct test_spec *test, struct ifobject *ifobj_tx,
}
}
+ if (ifobj_tx->hw_ring_size_supp)
+ hw_ring_size_reset(ifobj_tx);
+
test->ifobj_tx = ifobj_tx;
test->ifobj_rx = ifobj_rx;
test->current_step = 0;
test->total_steps = 1;
test->nb_sockets = 1;
test->fail = false;
+ test->set_ring = false;
test->mtu = MAX_ETH_PKT_SIZE;
test->xdp_prog_rx = ifobj_rx->xdp_progs->progs.xsk_def_prog;
test->xskmap_rx = ifobj_rx->xdp_progs->maps.xsk;
@@ -1087,7 +1124,7 @@ static int __receive_pkts(struct test_spec *test, struct xsk_socket_info *xsk)
return TEST_CONTINUE;
}
- rcvd = xsk_ring_cons__peek(&xsk->rx, BATCH_SIZE, &idx_rx);
+ rcvd = xsk_ring_cons__peek(&xsk->rx, xsk->batch_size, &idx_rx);
if (!rcvd)
return TEST_CONTINUE;
@@ -1239,7 +1276,8 @@ static int __send_pkts(struct ifobject *ifobject, struct xsk_socket_info *xsk, b
buffer_len = pkt_get_buffer_len(umem, pkt_stream->max_pkt_len);
/* pkts_in_flight might be negative if many invalid packets are sent */
- if (pkts_in_flight >= (int)((umem_size(umem) - BATCH_SIZE * buffer_len) / buffer_len)) {
+ if (pkts_in_flight >= (int)((umem_size(umem) - xsk->batch_size * buffer_len) /
+ buffer_len)) {
ret = kick_tx(xsk);
if (ret)
return TEST_FAILURE;
@@ -1249,7 +1287,7 @@ static int __send_pkts(struct ifobject *ifobject, struct xsk_socket_info *xsk, b
fds.fd = xsk_socket__fd(xsk->xsk);
fds.events = POLLOUT;
- while (xsk_ring_prod__reserve(&xsk->tx, BATCH_SIZE, &idx) < BATCH_SIZE) {
+ while (xsk_ring_prod__reserve(&xsk->tx, xsk->batch_size, &idx) < xsk->batch_size) {
if (use_poll) {
ret = poll(&fds, 1, POLL_TMOUT);
if (timeout) {
@@ -1269,10 +1307,10 @@ static int __send_pkts(struct ifobject *ifobject, struct xsk_socket_info *xsk, b
}
}
- complete_pkts(xsk, BATCH_SIZE);
+ complete_pkts(xsk, xsk->batch_size);
}
- for (i = 0; i < BATCH_SIZE; i++) {
+ for (i = 0; i < xsk->batch_size; i++) {
struct pkt *pkt = pkt_stream_get_next_tx_pkt(pkt_stream);
u32 nb_frags_left, nb_frags, bytes_written = 0;
@@ -1280,9 +1318,9 @@ static int __send_pkts(struct ifobject *ifobject, struct xsk_socket_info *xsk, b
break;
nb_frags = pkt_nb_frags(umem->frame_size, pkt_stream, pkt);
- if (nb_frags > BATCH_SIZE - i) {
+ if (nb_frags > xsk->batch_size - i) {
pkt_stream_cancel(pkt_stream);
- xsk_ring_prod__cancel(&xsk->tx, BATCH_SIZE - i);
+ xsk_ring_prod__cancel(&xsk->tx, xsk->batch_size - i);
break;
}
nb_frags_left = nb_frags;
@@ -1370,7 +1408,7 @@ static int wait_for_tx_completion(struct xsk_socket_info *xsk)
return TEST_FAILURE;
}
- complete_pkts(xsk, BATCH_SIZE);
+ complete_pkts(xsk, xsk->batch_size);
}
return TEST_PASS;
@@ -1860,6 +1898,14 @@ static int testapp_validate_traffic(struct test_spec *test)
return TEST_SKIP;
}
+ if (test->set_ring) {
+ if (ifobj_tx->hw_ring_size_supp)
+ return set_ring_size(ifobj_tx);
+
+ ksft_test_result_skip("Changing HW ring size not supported.\n");
+ return TEST_SKIP;
+ }
+
xsk_attach_xdp_progs(test, ifobj_rx, ifobj_tx);
return __testapp_validate_traffic(test, ifobj_rx, ifobj_tx);
}
@@ -2373,6 +2419,50 @@ static int testapp_xdp_metadata_mb(struct test_spec *test)
return testapp_xdp_metadata_copy(test);
}
+static int testapp_hw_sw_min_ring_size(struct test_spec *test)
+{
+ int ret;
+
+ test->set_ring = true;
+ test->total_steps = 2;
+ test->ifobj_tx->ring.tx_pending = DEFAULT_BATCH_SIZE;
+ test->ifobj_tx->ring.rx_pending = DEFAULT_BATCH_SIZE * 2;
+ test->ifobj_tx->xsk->batch_size = 1;
+ test->ifobj_rx->xsk->batch_size = 1;
+ ret = testapp_validate_traffic(test);
+ if (ret)
+ return ret;
+
+ /* Set batch size to hw_ring_size - 1 */
+ test->ifobj_tx->xsk->batch_size = DEFAULT_BATCH_SIZE - 1;
+ test->ifobj_rx->xsk->batch_size = DEFAULT_BATCH_SIZE - 1;
+ return testapp_validate_traffic(test);
+}
+
+static int testapp_hw_sw_max_ring_size(struct test_spec *test)
+{
+ u32 max_descs = XSK_RING_PROD__DEFAULT_NUM_DESCS * 2;
+ int ret;
+
+ test->set_ring = true;
+ test->total_steps = 2;
+ test->ifobj_tx->ring.tx_pending = test->ifobj_tx->ring.tx_max_pending;
+ test->ifobj_tx->ring.rx_pending = test->ifobj_tx->ring.rx_max_pending;
+ test->ifobj_rx->umem->num_frames = max_descs;
+ test->ifobj_rx->xsk->rxqsize = max_descs;
+ test->ifobj_tx->xsk->batch_size = XSK_RING_PROD__DEFAULT_NUM_DESCS;
+ test->ifobj_rx->xsk->batch_size = XSK_RING_PROD__DEFAULT_NUM_DESCS;
+
+ ret = testapp_validate_traffic(test);
+ if (ret)
+ return ret;
+
+ /* Set batch_size to 4095 */
+ test->ifobj_tx->xsk->batch_size = max_descs - 1;
+ test->ifobj_rx->xsk->batch_size = max_descs - 1;
+ return testapp_validate_traffic(test);
+}
+
static void run_pkt_test(struct test_spec *test)
{
int ret;
@@ -2477,7 +2567,9 @@ static const struct test_spec tests[] = {
{.name = "ALIGNED_INV_DESC_MULTI_BUFF", .test_func = testapp_aligned_inv_desc_mb},
{.name = "UNALIGNED_INV_DESC_MULTI_BUFF", .test_func = testapp_unaligned_inv_desc_mb},
{.name = "TOO_MANY_FRAGS", .test_func = testapp_too_many_frags},
-};
+ {.name = "HW_SW_MIN_RING_SIZE", .test_func = testapp_hw_sw_min_ring_size},
+ {.name = "HW_SW_MAX_RING_SIZE", .test_func = testapp_hw_sw_max_ring_size},
+ };
static void print_tests(void)
{
@@ -2497,6 +2589,7 @@ int main(int argc, char **argv)
int modes = TEST_MODE_SKB + 1;
struct test_spec test;
bool shared_netdev;
+ int ret;
/* Use libbpf 1.0 API mode */
libbpf_set_strict_mode(LIBBPF_STRICT_ALL);
@@ -2534,6 +2627,13 @@ int main(int argc, char **argv)
modes++;
}
+ ret = get_hw_ring_size(ifobj_tx->ifname, &ifobj_tx->ring);
+ if (!ret) {
+ ifobj_tx->hw_ring_size_supp = true;
+ ifobj_tx->set_ring.default_tx = ifobj_tx->ring.tx_pending;
+ ifobj_tx->set_ring.default_rx = ifobj_tx->ring.rx_pending;
+ }
+
init_iface(ifobj_rx, worker_testapp_validate_rx);
init_iface(ifobj_tx, worker_testapp_validate_tx);
@@ -2581,6 +2681,9 @@ int main(int argc, char **argv)
}
}
+ if (ifobj_tx->hw_ring_size_supp)
+ hw_ring_size_reset(ifobj_tx);
+
pkt_stream_delete(tx_pkt_stream_default);
pkt_stream_delete(rx_pkt_stream_default);
xsk_unload_xdp_programs(ifobj_tx);
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-02 13:07:52 +0100