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Message-Id: <20201207215333.11586-5-weqaar.a.janjua@intel.com>
Date: Mon, 7 Dec 2020 21:53:32 +0000
From: Weqaar Janjua <weqaar.janjua@...il.com>
To: bpf@...r.kernel.org, netdev@...r.kernel.org, daniel@...earbox.net,
ast@...nel.org, yhs@...com, 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 v4 4/5] selftests/bpf: xsk selftests - Socket Teardown - SKB, DRV
Adds following tests:
1. AF_XDP SKB mode
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
2. AF_XDP DRV/Native mode
c. Socket Teardown
* 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/test_xsk.sh | 24 ++++++++++++++++
tools/testing/selftests/bpf/xdpxceiver.c | 35 +++++++++++++++++++++---
tools/testing/selftests/bpf/xdpxceiver.h | 2 ++
3 files changed, 57 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/bpf/test_xsk.sh b/tools/testing/selftests/bpf/test_xsk.sh
index aad8065637fd..9be9dff25560 100755
--- a/tools/testing/selftests/bpf/test_xsk.sh
+++ b/tools/testing/selftests/bpf/test_xsk.sh
@@ -197,6 +197,30 @@ retval=$?
test_status $retval "${TEST_NAME}"
statusList+=($retval)
+### TEST 6
+TEST_NAME="SKB SOCKET TEARDOWN"
+
+vethXDPgeneric ${VETH0} ${VETH1} ${NS1}
+
+params=("-S" "-T")
+execxdpxceiver params
+
+retval=$?
+test_status $retval "${TEST_NAME}"
+statusList+=($retval)
+
+### TEST 7
+TEST_NAME="DRV SOCKET TEARDOWN"
+
+vethXDPnative ${VETH0} ${VETH1} ${NS1}
+
+params=("-N" "-T")
+execxdpxceiver params
+
+retval=$?
+test_status $retval "${TEST_NAME}"
+statusList+=($retval)
+
## END TESTS
cleanup_exit ${VETH0} ${VETH1} ${NS1}
diff --git a/tools/testing/selftests/bpf/xdpxceiver.c b/tools/testing/selftests/bpf/xdpxceiver.c
index 9fcd80a38b07..e8907109782d 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.c
+++ b/tools/testing/selftests/bpf/xdpxceiver.c
@@ -26,6 +26,9 @@
* generic XDP path. XDP hook from netif_receive_skb().
* a. nopoll - soft-irq processing
* b. poll - using poll() syscall
+ * 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
*
* 2. AF_XDP DRV/Native mode
* Works on any netdevice with XDP_REDIRECT support, driver dependent. Processes
@@ -33,10 +36,11 @@
* hook available just after DMA of buffer descriptor.
* a. nopoll
* b. poll
+ * c. Socket Teardown
* - Only copy mode is supported because veth does not currently support
* zero-copy mode
*
- * Total tests: 4
+ * Total tests: 6
*
* Flow:
* -----
@@ -97,7 +101,8 @@ 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\n", uut ? "DRV" : "SKB", opt_poll ? "POLL" : "NOPOLL"))
+ (ksft_test_result_pass("PASS: %s %s %s\n", uut ? "DRV" : "SKB", opt_poll ? "POLL" :\
+ "NOPOLL", opt_teardown ? "Socket Teardown" : ""))
static void pthread_init_mutex(void)
{
@@ -322,6 +327,7 @@ static struct option long_options[] = {
{"xdp-skb", no_argument, 0, 'S'},
{"xdp-native", no_argument, 0, 'N'},
{"copy", no_argument, 0, 'c'},
+ {"tear-down", no_argument, 0, 'T'},
{"debug", optional_argument, 0, 'D'},
{"tx-pkt-count", optional_argument, 0, 'C'},
{0, 0, 0, 0}
@@ -338,6 +344,7 @@ static void usage(const char *prog)
" -S, --xdp-skb=n Use XDP SKB mode\n"
" -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"
" -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);
@@ -428,7 +435,7 @@ static void parse_command_line(int argc, char **argv)
opterr = 0;
for (;;) {
- c = getopt_long(argc, argv, "i:q:pSNcDC:", long_options, &option_index);
+ c = getopt_long(argc, argv, "i:q:pSNcTDC:", long_options, &option_index);
if (c == -1)
break;
@@ -467,6 +474,9 @@ static void parse_command_line(int argc, char **argv)
case 'c':
opt_xdp_bind_flags |= XDP_COPY;
break;
+ case 'T':
+ opt_teardown = 1;
+ break;
case 'D':
debug_pkt_dump = 1;
break;
@@ -871,6 +881,9 @@ static void *worker_testapp_validate(void *arg)
ksft_print_msg("Received %d packets on interface %s\n",
pkt_counter, ((struct ifobject *)arg)->ifname);
+
+ if (opt_teardown)
+ ksft_print_msg("Destroying socket\n");
}
xsk_socket__delete(((struct ifobject *)arg)->xsk->xsk);
@@ -916,6 +929,20 @@ static void testapp_validate(void)
free(pkt_buf);
}
+ if (!opt_teardown)
+ print_ksft_result();
+}
+
+static void testapp_sockets(void)
+{
+ for (int i = 0; i < MAX_TEARDOWN_ITER; i++) {
+ pkt_counter = 0;
+ prev_pkt = -1;
+ sigvar = 0;
+ ksft_print_msg("Creating socket\n");
+ testapp_validate();
+ }
+
print_ksft_result();
}
@@ -982,7 +1009,7 @@ int main(int argc, char **argv)
ksft_set_plan(1);
- testapp_validate();
+ opt_teardown ? testapp_sockets() : testapp_validate();
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 12070d66344b..58185b914f99 100644
--- a/tools/testing/selftests/bpf/xdpxceiver.h
+++ b/tools/testing/selftests/bpf/xdpxceiver.h
@@ -21,6 +21,7 @@
#define MAX_INTERFACE_NAME_CHARS 7
#define MAX_INTERFACES_NAMESPACE_CHARS 10
#define MAX_SOCKS 1
+#define MAX_TEARDOWN_ITER 10
#define PKT_HDR_SIZE (sizeof(struct ethhdr) + sizeof(struct iphdr) + \
sizeof(struct udphdr))
#define MIN_PKT_SIZE 64
@@ -57,6 +58,7 @@ 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 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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