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Date: Fri, 20 Nov 2020 13:00:26 +0000
From: Weqaar Janjua <weqaar.janjua@...il.com>
To: bpf@...r.kernel.org, netdev@...r.kernel.org, daniel@...earbox.net,
ast@...nel.org, magnus.karlsson@...il.com, bjorn.topel@...el.com
Cc: Weqaar Janjua <weqaar.a.janjua@...el.com>, shuah@...nel.org,
skhan@...uxfoundation.org, linux-kselftest@...r.kernel.org,
anders.roxell@...aro.org, jonathan.lemon@...il.com
Subject: [PATCH bpf-next v2 5/5] selftests/bpf: xsk selftests - Bi-directional Sockets - SKB, DRV
Adds following tests:
1. AF_XDP SKB mode
d. Bi-directional Sockets
Configure sockets as bi-directional tx/rx sockets, sets up fill
and completion rings on each socket, tx/rx in both directions.
Only nopoll mode is used
2. AF_XDP DRV/Native mode
d. Bi-directional Sockets
* Only copy mode is supported because veth does not currently support
zero-copy mode
Signed-off-by: Weqaar Janjua <weqaar.a.janjua@...el.com>
---
tools/testing/selftests/bpf/Makefile | 4 +-
.../bpf/test_xsk_drv_bidirectional.sh | 23 ++++
.../selftests/bpf/test_xsk_drv_teardown.sh | 3 -
.../bpf/test_xsk_skb_bidirectional.sh | 20 ++++
tools/testing/selftests/bpf/xdpxceiver.c | 100 +++++++++++++-----
tools/testing/selftests/bpf/xdpxceiver.h | 4 +
6 files changed, 126 insertions(+), 28 deletions(-)
create mode 100755 tools/testing/selftests/bpf/test_xsk_drv_bidirectional.sh
create mode 100755 tools/testing/selftests/bpf/test_xsk_skb_bidirectional.sh
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index 515b29d321d7..258bd72812e0 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -78,7 +78,9 @@ TEST_PROGS := test_kmod.sh \
test_xsk_drv_nopoll.sh \
test_xsk_drv_poll.sh \
test_xsk_skb_teardown.sh \
- test_xsk_drv_teardown.sh
+ test_xsk_drv_teardown.sh \
+ test_xsk_skb_bidirectional.sh \
+ test_xsk_drv_bidirectional.sh
TEST_PROGS_EXTENDED := with_addr.sh \
with_tunnels.sh \
diff --git a/tools/testing/selftests/bpf/test_xsk_drv_bidirectional.sh b/tools/testing/selftests/bpf/test_xsk_drv_bidirectional.sh
new file mode 100755
index 000000000000..d3a7e2934d83
--- /dev/null
+++ b/tools/testing/selftests/bpf/test_xsk_drv_bidirectional.sh
@@ -0,0 +1,23 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright(c) 2020 Intel Corporation.
+
+# See test_xsk_prerequisites.sh for detailed information on tests
+
+. xsk_prereqs.sh
+. xsk_env.sh
+
+TEST_NAME="DRV BIDIRECTIONAL SOCKETS"
+
+vethXDPnative ${VETH0} ${VETH1} ${NS1}
+
+params=("-N" "-B")
+execxdpxceiver params
+
+retval=$?
+test_status $retval "${TEST_NAME}"
+
+# Must be called in the last test to execute
+cleanup_exit ${VETH0} ${VETH1} ${NS1}
+
+test_exit $retval 0
diff --git a/tools/testing/selftests/bpf/test_xsk_drv_teardown.sh b/tools/testing/selftests/bpf/test_xsk_drv_teardown.sh
index 28bf730b589e..7f11033747ac 100755
--- a/tools/testing/selftests/bpf/test_xsk_drv_teardown.sh
+++ b/tools/testing/selftests/bpf/test_xsk_drv_teardown.sh
@@ -17,7 +17,4 @@ execxdpxceiver params
retval=$?
test_status $retval "${TEST_NAME}"
-# Must be called in the last test to execute
-cleanup_exit ${VETH0} ${VETH1} ${NS1}
-
test_exit $retval 0
diff --git a/tools/testing/selftests/bpf/test_xsk_skb_bidirectional.sh b/tools/testing/selftests/bpf/test_xsk_skb_bidirectional.sh
new file mode 100755
index 000000000000..8ae1b6694f02
--- /dev/null
+++ b/tools/testing/selftests/bpf/test_xsk_skb_bidirectional.sh
@@ -0,0 +1,20 @@
+#!/bin/bash
+# SPDX-License-Identifier: GPL-2.0
+# Copyright(c) 2020 Intel Corporation.
+
+# See test_xsk_prerequisites.sh for detailed information on tests
+
+. xsk_prereqs.sh
+. xsk_env.sh
+
+TEST_NAME="SKB BIDIRECTIONAL SOCKETS"
+
+vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
+
+params=("-S" "-B")
+execxdpxceiver params
+
+retval=$?
+test_status $retval "${TEST_NAME}"
+
+test_exit $retval 0
diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index ba5de1ef9f64..277d9344ce34 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -29,6 +29,10 @@
* c. Socket Teardown
* Create a Tx and a Rx socket, Tx from one socket, Rx on another. Destroy
* both sockets, then repeat multiple times. Only nopoll mode is used
+ * d. Bi-directional sockets
+ * Configure sockets as bi-directional tx/rx sockets, sets up fill and
+ * completion rings on each socket, tx/rx in both directions. Only nopoll
+ * mode is used
*
* 2. AF_XDP DRV/Native mode
* Works on any netdevice with XDP_REDIRECT support, driver dependent. Processes
@@ -37,10 +41,11 @@
* a. nopoll
* b. poll
* c. Socket Teardown
+ * d. Bi-directional sockets
* - Only copy mode is supported because veth does not currently support
* zero-copy mode
*
- * Total tests: 6
+ * Total tests: 8
*
* Flow:
* -----
@@ -100,8 +105,9 @@ static void __exit_with_error(int error, const char *file, const char *func, int
#define exit_with_error(error) __exit_with_error(error, __FILE__, __func__, __LINE__)
#define print_ksft_result(void)\
- (ksft_test_result_pass("PASS: %s %s %s\n", uut ? "DRV" : "SKB", opt_poll ? "POLL" :\
- "NOPOLL", opt_teardown ? "Socket Teardown" : ""))
+ (ksft_test_result_pass("PASS: %s %s %s%s\n", uut ? "DRV" : "SKB", opt_poll ? "POLL" :\
+ "NOPOLL", opt_teardown ? "Socket Teardown" : "",\
+ opt_bidi ? "Bi-directional Sockets" : ""))
static void pthread_init_mutex(void)
{
@@ -307,8 +313,13 @@ static int xsk_configure_socket(struct ifobject *ifobject)
cfg.xdp_flags = opt_xdp_flags;
cfg.bind_flags = opt_xdp_bind_flags;
- rxr = (ifobject->fv.vector == rx) ? &ifobject->xsk->rx : NULL;
- txr = (ifobject->fv.vector == tx) ? &ifobject->xsk->tx : NULL;
+ if (!opt_bidi) {
+ rxr = (ifobject->fv.vector == rx) ? &ifobject->xsk->rx : NULL;
+ txr = (ifobject->fv.vector == tx) ? &ifobject->xsk->tx : NULL;
+ } else {
+ rxr = &ifobject->xsk->rx;
+ txr = &ifobject->xsk->tx;
+ }
ret = xsk_socket__create(&ifobject->xsk->xsk, ifobject->ifname,
opt_queue, ifobject->umem->umem, rxr, txr, &cfg);
@@ -327,6 +338,7 @@ static struct option long_options[] = {
{"xdp-native", no_argument, 0, 'N'},
{"copy", no_argument, 0, 'c'},
{"tear-down", no_argument, 0, 'T'},
+ {"bidi", optional_argument, 0, 'B'},
{"debug", optional_argument, 0, 'D'},
{"tx-pkt-count", optional_argument, 0, 'C'},
{0, 0, 0, 0}
@@ -344,6 +356,7 @@ static void usage(const char *prog)
" -N, --xdp-native=n Enforce XDP DRV (native) mode\n"
" -c, --copy Force copy mode\n"
" -T, --tear-down Tear down sockets by repeatedly recreating them\n"
+ " -B, --bidi Bi-directional sockets test\n"
" -D, --debug Debug mode - dump packets L2 - L5\n"
" -C, --tx-pkt-count=n Number of packets to send\n";
ksft_print_msg(str, prog);
@@ -434,7 +447,7 @@ static void parse_command_line(int argc, char **argv)
opterr = 0;
for (;;) {
- c = getopt_long(argc, argv, "i:q:pSNcTDC:", long_options, &option_index);
+ c = getopt_long(argc, argv, "i:q:pSNcTBDC:", long_options, &option_index);
if (c == -1)
break;
@@ -475,6 +488,9 @@ static void parse_command_line(int argc, char **argv)
case 'T':
opt_teardown = 1;
break;
+ case 'B':
+ opt_bidi = 1;
+ break;
case 'D':
debug_pkt_dump = 1;
break;
@@ -784,22 +800,25 @@ static void *worker_testapp_validate(void *arg)
struct generic_data *data = (struct generic_data *)malloc(sizeof(struct generic_data));
struct iphdr *ip_hdr = (struct iphdr *)(pkt_data + sizeof(struct ethhdr));
struct ethhdr *eth_hdr = (struct ethhdr *)pkt_data;
- void *bufs;
+ void *bufs = NULL;
pthread_attr_setstacksize(&attr, THREAD_STACK);
- bufs = mmap(NULL, num_frames * XSK_UMEM__DEFAULT_FRAME_SIZE,
- PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
- if (bufs == MAP_FAILED)
- exit_with_error(errno);
+ if (!bidi_pass) {
+ bufs = mmap(NULL, num_frames * XSK_UMEM__DEFAULT_FRAME_SIZE,
+ PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+ if (bufs == MAP_FAILED)
+ exit_with_error(errno);
- if (strcmp(((struct ifobject *)arg)->nsname, ""))
- switch_namespace(((struct ifobject *)arg)->ifdict_index);
+ if (strcmp(((struct ifobject *)arg)->nsname, ""))
+ switch_namespace(((struct ifobject *)arg)->ifdict_index);
+ }
if (((struct ifobject *)arg)->fv.vector == tx) {
int spinningrxctr = 0;
- thread_common_ops(arg, bufs, &sync_mutex_tx, &spinning_tx);
+ if (!bidi_pass)
+ thread_common_ops(arg, bufs, &sync_mutex_tx, &spinning_tx);
while (atomic_load(&spinning_rx) && spinningrxctr < SOCK_RECONF_CTR) {
spinningrxctr++;
@@ -829,7 +848,8 @@ static void *worker_testapp_validate(void *arg)
struct pollfd fds[MAX_SOCKS] = { };
int ret;
- thread_common_ops(arg, bufs, &sync_mutex_tx, &spinning_rx);
+ if (!bidi_pass)
+ thread_common_ops(arg, bufs, &sync_mutex_tx, &spinning_rx);
ksft_print_msg("Interface [%s] vector [Rx]\n", ((struct ifobject *)arg)->ifname);
xsk_populate_fill_ring(((struct ifobject *)arg)->umem);
@@ -868,8 +888,10 @@ static void *worker_testapp_validate(void *arg)
ksft_print_msg("Destroying socket\n");
}
- xsk_socket__delete(((struct ifobject *)arg)->xsk->xsk);
- (void)xsk_umem__delete(((struct ifobject *)arg)->umem->umem);
+ if (!opt_bidi || (opt_bidi && bidi_pass)) {
+ xsk_socket__delete(((struct ifobject *)arg)->xsk->xsk);
+ (void)xsk_umem__delete(((struct ifobject *)arg)->umem->umem);
+ }
pthread_exit(NULL);
}
@@ -878,11 +900,26 @@ static void testapp_validate(void)
pthread_attr_init(&attr);
pthread_attr_setstacksize(&attr, THREAD_STACK);
+ if (opt_bidi && bidi_pass) {
+ pthread_init_mutex();
+ if (!switching_notify) {
+ ksft_print_msg("Switching Tx/Rx vectors\n");
+ switching_notify++;
+ }
+ }
+
pthread_mutex_lock(&sync_mutex);
/*Spawn RX thread */
- if (pthread_create(&t0, &attr, worker_testapp_validate, (void *)ifdict[1]))
- exit_with_error(errno);
+ if (!opt_bidi || (opt_bidi && !bidi_pass)) {
+ if (pthread_create(&t0, &attr, worker_testapp_validate, (void *)ifdict[1]))
+ exit_with_error(errno);
+ } else if (opt_bidi && bidi_pass) {
+ /*switch Tx/Rx vectors */
+ ifdict[0]->fv.vector = rx;
+ if (pthread_create(&t0, &attr, worker_testapp_validate, (void *)ifdict[0]))
+ exit_with_error(errno);
+ }
struct timespec max_wait = { 0, 0 };
@@ -896,8 +933,15 @@ static void testapp_validate(void)
pthread_mutex_unlock(&sync_mutex);
/*Spawn TX thread */
- if (pthread_create(&t1, &attr, worker_testapp_validate, (void *)ifdict[0]))
- exit_with_error(errno);
+ if (!opt_bidi || (opt_bidi && !bidi_pass)) {
+ if (pthread_create(&t1, &attr, worker_testapp_validate, (void *)ifdict[0]))
+ exit_with_error(errno);
+ } else if (opt_bidi && bidi_pass) {
+ /*switch Tx/Rx vectors */
+ ifdict[1]->fv.vector = tx;
+ if (pthread_create(&t1, &attr, worker_testapp_validate, (void *)ifdict[1]))
+ exit_with_error(errno);
+ }
pthread_join(t1, NULL);
pthread_join(t0, NULL);
@@ -911,18 +955,19 @@ static void testapp_validate(void)
free(pkt_buf);
}
- if (!opt_teardown)
+ if (!opt_teardown && !opt_bidi)
print_ksft_result();
}
static void testapp_sockets(void)
{
- for (int i = 0; i < MAX_TEARDOWN_ITER; i++) {
+ for (int i = 0; i < (opt_teardown ? MAX_TEARDOWN_ITER : MAX_BIDI_ITER); i++) {
pkt_counter = 0;
prev_pkt = -1;
sigvar = 0;
ksft_print_msg("Creating socket\n");
testapp_validate();
+ opt_bidi ? bidi_pass++ : bidi_pass;
}
print_ksft_result();
@@ -991,7 +1036,14 @@ int main(int argc, char **argv)
ksft_set_plan(1);
- opt_teardown ? testapp_sockets() : testapp_validate();
+ if (!opt_teardown && !opt_bidi) {
+ testapp_validate();
+ } else if (opt_teardown && opt_bidi) {
+ ksft_test_result_fail("ERROR: parameters -T and -B cannot be used together\n");
+ ksft_exit_xfail();
+ } else {
+ testapp_sockets();
+ }
for (int i = 0; i < MAX_INTERFACES; i++)
free(ifdict[i]);
diff --git a/tools/testing/selftests/bpf/xdpxceiver.h b/tools/testing/selftests/bpf/xdpxceiver.h
index 9d2670f28d86..d6630a19140b 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -22,6 +22,7 @@
#define MAX_INTERFACES_NAMESPACE_CHARS 10
#define MAX_SOCKS 1
#define MAX_TEARDOWN_ITER 10
+#define MAX_BIDI_ITER 2
#define PKT_HDR_SIZE (sizeof(struct ethhdr) + sizeof(struct iphdr) + \
sizeof(struct udphdr))
#define MIN_PKT_SIZE 64
@@ -51,12 +52,15 @@ enum TESTS {
u8 uut;
u8 debug_pkt_dump;
u32 num_frames;
+u8 switching_notify;
+u8 bidi_pass;
static u32 opt_xdp_flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
static int opt_queue;
static int opt_pkt_count;
static int opt_poll;
static int opt_teardown;
+static int opt_bidi;
static u32 opt_xdp_bind_flags = XDP_USE_NEED_WAKEUP;
static u8 pkt_data[XSK_UMEM__DEFAULT_FRAME_SIZE];
static u32 pkt_counter;
--
2.20.1
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