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Date: Sat, 27 Mar 2021 00:09:32 +0100
From: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
To: bpf@...r.kernel.org, netdev@...r.kernel.org, daniel@...earbox.net,
ast@...nel.org, andrii@...nel.org
Cc: bjorn.topel@...el.com, magnus.karlsson@...el.com,
ciara.loftus@...el.com, john.fastabend@...il.com, toke@...hat.com,
Maciej Fijalkowski <maciej.fijalkowski@...el.com>
Subject: [PATCH v4 bpf-next 11/17] selftests: xsk: refactor teardown/bidi test cases and testapp_validate
Currently, there is a testapp_sockets() that acts like a wrapper around
testapp_validate() and it is called for bidi and teardown test types.
Other test types call testapp_validate() directly.
Split testapp_sockets() onto two separate functions so a bunch of bidi
specific logic can be moved there and out of testapp_validate() itself.
Introduce function pointer to ifobject struct which will be used for
assigning the Rx/Tx function that is assigned to worker thread. Let's
also have a global ifobject Rx/Tx pointers so it's easier to swap the
vectors on a second run of a bi-directional test. Thread creation now is
easey to follow.
switching_notify variable is useless, info about vector switch can be
printed based on bidi_pass state.
Last but not least, init/destroy synchronization variables only once,
not per each test.
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@...el.com>
---
tools/testing/selftests/bpf/xdpxceiver.c | 117 ++++++++++++++---------
tools/testing/selftests/bpf/xdpxceiver.h | 14 +--
2 files changed, 78 insertions(+), 53 deletions(-)
diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 3db221e548cc..aeff5340be49 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -896,26 +896,10 @@ static void testapp_validate(void)
pthread_attr_init(&attr);
pthread_attr_setstacksize(&attr, THREAD_STACK);
- if ((test_type == TEST_TYPE_BIDI) && bidi_pass) {
- pthread_init_mutex();
- if (!switching_notify) {
- print_verbose("Switching Tx/Rx vectors\n");
- switching_notify++;
- }
- }
-
pthread_mutex_lock(&sync_mutex);
/*Spawn RX thread */
- if (!bidi || !bidi_pass) {
- if (pthread_create(&t0, &attr, worker_testapp_validate_rx, ifdict[1]))
- exit_with_error(errno);
- } else if (bidi && bidi_pass) {
- /*switch Tx/Rx vectors */
- ifdict[0]->fv.vector = rx;
- if (pthread_create(&t0, &attr, worker_testapp_validate_rx, ifdict[0]))
- exit_with_error(errno);
- }
+ pthread_create(&t0, &attr, ifdict_rx->func_ptr, ifdict_rx);
if (clock_gettime(CLOCK_REALTIME, &max_wait))
exit_with_error(errno);
@@ -927,15 +911,7 @@ static void testapp_validate(void)
pthread_mutex_unlock(&sync_mutex);
/*Spawn TX thread */
- if (!bidi || !bidi_pass) {
- if (pthread_create(&t1, &attr, worker_testapp_validate_tx, ifdict[0]))
- exit_with_error(errno);
- } else if (bidi && bidi_pass) {
- /*switch Tx/Rx vectors */
- ifdict[1]->fv.vector = tx;
- if (pthread_create(&t1, &attr, worker_testapp_validate_tx, ifdict[1]))
- exit_with_error(errno);
- }
+ pthread_create(&t1, &attr, ifdict_tx->func_ptr, ifdict_tx);
pthread_join(t1, NULL);
pthread_join(t0, NULL);
@@ -953,18 +929,53 @@ static void testapp_validate(void)
print_ksft_result();
}
-static void testapp_sockets(void)
+static void testapp_teardown(void)
+{
+ int i;
+
+ for (i = 0; i < MAX_TEARDOWN_ITER; i++) {
+ pkt_counter = 0;
+ prev_pkt = -1;
+ sigvar = 0;
+ print_verbose("Creating socket\n");
+ testapp_validate();
+ }
+
+ print_ksft_result();
+}
+
+static void swap_vectors(struct ifobject *ifobj1, struct ifobject *ifobj2)
+{
+ void *(*tmp_func_ptr)(void *) = ifobj1->func_ptr;
+ enum fvector tmp_vector = ifobj1->fv.vector;
+
+ ifobj1->func_ptr = ifobj2->func_ptr;
+ ifobj1->fv.vector = ifobj2->fv.vector;
+
+ ifobj2->func_ptr = tmp_func_ptr;
+ ifobj2->fv.vector = tmp_vector;
+
+ ifdict_tx = ifobj1;
+ ifdict_rx = ifobj2;
+}
+
+static void testapp_bidi(void)
{
- for (int i = 0; i < ((test_type == TEST_TYPE_TEARDOWN) ? MAX_TEARDOWN_ITER : MAX_BIDI_ITER);
- i++) {
+ for (int i = 0; i < MAX_BIDI_ITER; i++) {
pkt_counter = 0;
prev_pkt = -1;
sigvar = 0;
print_verbose("Creating socket\n");
testapp_validate();
- test_type == TEST_TYPE_BIDI ? bidi_pass++ : bidi_pass;
+ if (!bidi_pass) {
+ print_verbose("Switching Tx/Rx vectors\n");
+ swap_vectors(ifdict[1], ifdict[0]);
+ }
+ bidi_pass++;
}
+ swap_vectors(ifdict[0], ifdict[1]);
+
print_ksft_result();
}
@@ -997,7 +1008,7 @@ static void testapp_stats(void)
static void init_iface(struct ifobject *ifobj, const char *dst_mac,
const char *src_mac, const char *dst_ip,
const char *src_ip, const u16 dst_port,
- const u16 src_port)
+ const u16 src_port, enum fvector vector)
{
struct in_addr ip;
@@ -1012,6 +1023,16 @@ static void init_iface(struct ifobject *ifobj, const char *dst_mac,
ifobj->dst_port = dst_port;
ifobj->src_port = src_port;
+
+ if (vector == tx) {
+ ifobj->fv.vector = tx;
+ ifobj->func_ptr = worker_testapp_validate_tx;
+ ifdict_tx = ifobj;
+ } else {
+ ifobj->fv.vector = rx;
+ ifobj->func_ptr = worker_testapp_validate_rx;
+ ifdict_rx = ifobj;
+ }
}
static void run_pkt_test(int mode, int type)
@@ -1021,11 +1042,8 @@ static void run_pkt_test(int mode, int type)
/* reset defaults after potential previous test */
xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
pkt_counter = 0;
- switching_notify = 0;
bidi_pass = 0;
prev_pkt = -1;
- ifdict[0]->fv.vector = tx;
- ifdict[1]->fv.vector = rx;
sigvar = 0;
stat_test_type = -1;
rxqsize = XSK_RING_CONS__DEFAULT_NUM_DESCS;
@@ -1042,16 +1060,20 @@ static void run_pkt_test(int mode, int type)
break;
}
- pthread_init_mutex();
-
- if (test_type == TEST_TYPE_STATS)
+ switch (test_type) {
+ case TEST_TYPE_STATS:
testapp_stats();
- else if ((test_type != TEST_TYPE_TEARDOWN) && (test_type != TEST_TYPE_BIDI))
+ break;
+ case TEST_TYPE_TEARDOWN:
+ testapp_teardown();
+ break;
+ case TEST_TYPE_BIDI:
+ testapp_bidi();
+ break;
+ default:
testapp_validate();
- else
- testapp_sockets();
-
- pthread_destroy_mutex();
+ break;
+ }
}
int main(int argc, char **argv)
@@ -1076,14 +1098,13 @@ int main(int argc, char **argv)
num_frames = ++opt_pkt_count;
- ifdict[0]->fv.vector = tx;
- init_iface(ifdict[0], MAC1, MAC2, IP1, IP2, UDP_PORT1, UDP_PORT2);
-
- ifdict[1]->fv.vector = rx;
- init_iface(ifdict[1], MAC2, MAC1, IP2, IP1, UDP_PORT2, UDP_PORT1);
+ init_iface(ifdict[0], MAC1, MAC2, IP1, IP2, UDP_PORT1, UDP_PORT2, tx);
+ init_iface(ifdict[1], MAC2, MAC1, IP2, IP1, UDP_PORT2, UDP_PORT1, rx);
ksft_set_plan(TEST_MODE_MAX * TEST_TYPE_MAX);
+ pthread_init_mutex();
+
for (i = 0; i < TEST_MODE_MAX; i++) {
for (j = 0; j < TEST_TYPE_MAX; j++)
run_pkt_test(i, j);
@@ -1095,6 +1116,8 @@ int main(int argc, char **argv)
free(ifdict[i]);
}
+ pthread_destroy_mutex();
+
ksft_exit_pass();
return 0;
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 483be41229c6..3945746900af 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -77,7 +77,6 @@ enum STAT_TEST_TYPES {
static int configured_mode = TEST_MODE_UNCONFIGURED;
static u8 debug_pkt_dump;
static u32 num_frames;
-static u8 switching_notify;
static u8 bidi_pass;
static int test_type;
@@ -126,22 +125,25 @@ struct generic_data {
};
struct ifobject {
- int ns_fd;
- int ifdict_index;
char ifname[MAX_INTERFACE_NAME_CHARS];
char nsname[MAX_INTERFACES_NAMESPACE_CHARS];
- struct flow_vector fv;
struct xsk_socket_info *xsk;
struct xsk_umem_info *umem;
- u8 dst_mac[ETH_ALEN];
- u8 src_mac[ETH_ALEN];
+ void *(*func_ptr)(void *arg);
+ struct flow_vector fv;
+ int ns_fd;
+ int ifdict_index;
u32 dst_ip;
u32 src_ip;
u16 src_port;
u16 dst_port;
+ u8 dst_mac[ETH_ALEN];
+ u8 src_mac[ETH_ALEN];
};
static struct ifobject *ifdict[MAX_INTERFACES];
+static struct ifobject *ifdict_rx;
+static struct ifobject *ifdict_tx;
/*threads*/
atomic_int spinning_rx;
--
2.20.1
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