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-rw-r--r--tools/bpf/bpftool/link.c2
-rw-r--r--tools/testing/selftests/bpf/Makefile12
-rw-r--r--tools/testing/selftests/bpf/prog_tests/bpf_obj_pinning.c5
-rw-r--r--tools/testing/selftests/bpf/prog_tests/d_path.c19
-rw-r--r--tools/testing/selftests/bpf/prog_tests/sk_storage_omem_uncharge.c56
-rw-r--r--tools/testing/selftests/bpf/prog_tests/sockmap_helpers.h26
-rw-r--r--tools/testing/selftests/bpf/prog_tests/sockmap_listen.c7
-rw-r--r--tools/testing/selftests/bpf/progs/bpf_tracing_net.h1
-rw-r--r--tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c61
-rwxr-xr-xtools/testing/selftests/net/fib_tests.sh155
10 files changed, 339 insertions, 5 deletions
diff --git a/tools/bpf/bpftool/link.c b/tools/bpf/bpftool/link.c
index 0b214f6ab5c8..2e5c231e08ac 100644
--- a/tools/bpf/bpftool/link.c
+++ b/tools/bpf/bpftool/link.c
@@ -83,7 +83,7 @@ const char *evsel__hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX] = {
#define perf_event_name(array, id) ({ \
const char *event_str = NULL; \
\
- if ((id) >= 0 && (id) < ARRAY_SIZE(array)) \
+ if ((id) < ARRAY_SIZE(array)) \
event_str = array[id]; \
event_str; \
})
diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile
index edef49fcd23e..caede9b574cb 100644
--- a/tools/testing/selftests/bpf/Makefile
+++ b/tools/testing/selftests/bpf/Makefile
@@ -50,14 +50,17 @@ TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test
test_cgroup_storage \
test_tcpnotify_user test_sysctl \
test_progs-no_alu32
+TEST_INST_SUBDIRS := no_alu32
# Also test bpf-gcc, if present
ifneq ($(BPF_GCC),)
TEST_GEN_PROGS += test_progs-bpf_gcc
+TEST_INST_SUBDIRS += bpf_gcc
endif
ifneq ($(CLANG_CPUV4),)
TEST_GEN_PROGS += test_progs-cpuv4
+TEST_INST_SUBDIRS += cpuv4
endif
TEST_GEN_FILES = test_lwt_ip_encap.bpf.o test_tc_edt.bpf.o
@@ -714,3 +717,12 @@ EXTRA_CLEAN := $(TEST_CUSTOM_PROGS) $(SCRATCH_DIR) $(HOST_SCRATCH_DIR) \
# Delete partially updated (corrupted) files on error
.DELETE_ON_ERROR:
+
+DEFAULT_INSTALL_RULE := $(INSTALL_RULE)
+override define INSTALL_RULE
+ $(DEFAULT_INSTALL_RULE)
+ @for DIR in $(TEST_INST_SUBDIRS); do \
+ mkdir -p $(INSTALL_PATH)/$$DIR; \
+ rsync -a $(OUTPUT)/$$DIR/*.bpf.o $(INSTALL_PATH)/$$DIR;\
+ done
+endef
diff --git a/tools/testing/selftests/bpf/prog_tests/bpf_obj_pinning.c b/tools/testing/selftests/bpf/prog_tests/bpf_obj_pinning.c
index 31f1e815f671..ee0458a5ce78 100644
--- a/tools/testing/selftests/bpf/prog_tests/bpf_obj_pinning.c
+++ b/tools/testing/selftests/bpf/prog_tests/bpf_obj_pinning.c
@@ -8,6 +8,7 @@
#include <linux/unistd.h>
#include <linux/mount.h>
#include <sys/syscall.h>
+#include "bpf/libbpf_internal.h"
static inline int sys_fsopen(const char *fsname, unsigned flags)
{
@@ -155,7 +156,7 @@ static void validate_pin(int map_fd, const char *map_name, int src_value,
ASSERT_OK(err, "obj_pin");
/* cleanup */
- if (pin_opts.path_fd >= 0)
+ if (path_kind == PATH_FD_REL && pin_opts.path_fd >= 0)
close(pin_opts.path_fd);
if (old_cwd[0])
ASSERT_OK(chdir(old_cwd), "restore_cwd");
@@ -220,7 +221,7 @@ static void validate_get(int map_fd, const char *map_name, int src_value,
goto cleanup;
/* cleanup */
- if (get_opts.path_fd >= 0)
+ if (path_kind == PATH_FD_REL && get_opts.path_fd >= 0)
close(get_opts.path_fd);
if (old_cwd[0])
ASSERT_OK(chdir(old_cwd), "restore_cwd");
diff --git a/tools/testing/selftests/bpf/prog_tests/d_path.c b/tools/testing/selftests/bpf/prog_tests/d_path.c
index 911345c526e6..ccc768592e66 100644
--- a/tools/testing/selftests/bpf/prog_tests/d_path.c
+++ b/tools/testing/selftests/bpf/prog_tests/d_path.c
@@ -12,6 +12,17 @@
#include "test_d_path_check_rdonly_mem.skel.h"
#include "test_d_path_check_types.skel.h"
+/* sys_close_range is not around for long time, so let's
+ * make sure we can call it on systems with older glibc
+ */
+#ifndef __NR_close_range
+#ifdef __alpha__
+#define __NR_close_range 546
+#else
+#define __NR_close_range 436
+#endif
+#endif
+
static int duration;
static struct {
@@ -90,7 +101,11 @@ static int trigger_fstat_events(pid_t pid)
fstat(indicatorfd, &fileStat);
out_close:
- /* triggers filp_close */
+ /* sys_close no longer triggers filp_close, but we can
+ * call sys_close_range instead which still does
+ */
+#define close(fd) syscall(__NR_close_range, fd, fd, 0)
+
close(pipefd[0]);
close(pipefd[1]);
close(sockfd);
@@ -98,6 +113,8 @@ out_close:
close(devfd);
close(localfd);
close(indicatorfd);
+
+#undef close
return ret;
}
diff --git a/tools/testing/selftests/bpf/prog_tests/sk_storage_omem_uncharge.c b/tools/testing/selftests/bpf/prog_tests/sk_storage_omem_uncharge.c
new file mode 100644
index 000000000000..f35852d245e3
--- /dev/null
+++ b/tools/testing/selftests/bpf/prog_tests/sk_storage_omem_uncharge.c
@@ -0,0 +1,56 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2023 Facebook */
+#include <test_progs.h>
+#include <bpf/libbpf.h>
+#include <sys/types.h>
+#include <sys/socket.h>
+#include "sk_storage_omem_uncharge.skel.h"
+
+void test_sk_storage_omem_uncharge(void)
+{
+ struct sk_storage_omem_uncharge *skel;
+ int sk_fd = -1, map_fd, err, value;
+ socklen_t optlen;
+
+ skel = sk_storage_omem_uncharge__open_and_load();
+ if (!ASSERT_OK_PTR(skel, "skel open_and_load"))
+ return;
+ map_fd = bpf_map__fd(skel->maps.sk_storage);
+
+ /* A standalone socket not binding to addr:port,
+ * so nentns is not needed.
+ */
+ sk_fd = socket(AF_INET6, SOCK_STREAM, 0);
+ if (!ASSERT_GE(sk_fd, 0, "socket"))
+ goto done;
+
+ optlen = sizeof(skel->bss->cookie);
+ err = getsockopt(sk_fd, SOL_SOCKET, SO_COOKIE, &skel->bss->cookie, &optlen);
+ if (!ASSERT_OK(err, "getsockopt(SO_COOKIE)"))
+ goto done;
+
+ value = 0;
+ err = bpf_map_update_elem(map_fd, &sk_fd, &value, 0);
+ if (!ASSERT_OK(err, "bpf_map_update_elem(value=0)"))
+ goto done;
+
+ value = 0xdeadbeef;
+ err = bpf_map_update_elem(map_fd, &sk_fd, &value, 0);
+ if (!ASSERT_OK(err, "bpf_map_update_elem(value=0xdeadbeef)"))
+ goto done;
+
+ err = sk_storage_omem_uncharge__attach(skel);
+ if (!ASSERT_OK(err, "attach"))
+ goto done;
+
+ close(sk_fd);
+ sk_fd = -1;
+
+ ASSERT_EQ(skel->bss->cookie_found, 2, "cookie_found");
+ ASSERT_EQ(skel->bss->omem, 0, "omem");
+
+done:
+ sk_storage_omem_uncharge__destroy(skel);
+ if (sk_fd != -1)
+ close(sk_fd);
+}
diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_helpers.h b/tools/testing/selftests/bpf/prog_tests/sockmap_helpers.h
index d12665490a90..36d829a65aa4 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockmap_helpers.h
+++ b/tools/testing/selftests/bpf/prog_tests/sockmap_helpers.h
@@ -179,6 +179,32 @@
__ret; \
})
+static inline int poll_connect(int fd, unsigned int timeout_sec)
+{
+ struct timeval timeout = { .tv_sec = timeout_sec };
+ fd_set wfds;
+ int r, eval;
+ socklen_t esize = sizeof(eval);
+
+ FD_ZERO(&wfds);
+ FD_SET(fd, &wfds);
+
+ r = select(fd + 1, NULL, &wfds, NULL, &timeout);
+ if (r == 0)
+ errno = ETIME;
+ if (r != 1)
+ return -1;
+
+ if (getsockopt(fd, SOL_SOCKET, SO_ERROR, &eval, &esize) < 0)
+ return -1;
+ if (eval != 0) {
+ errno = eval;
+ return -1;
+ }
+
+ return 0;
+}
+
static inline int poll_read(int fd, unsigned int timeout_sec)
{
struct timeval timeout = { .tv_sec = timeout_sec };
diff --git a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
index 5674a9d0cacf..8df8cbb447f1 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockmap_listen.c
@@ -1452,11 +1452,18 @@ static int vsock_socketpair_connectible(int sotype, int *v0, int *v1)
if (p < 0)
goto close_cli;
+ if (poll_connect(c, IO_TIMEOUT_SEC) < 0) {
+ FAIL_ERRNO("poll_connect");
+ goto close_acc;
+ }
+
*v0 = p;
*v1 = c;
return 0;
+close_acc:
+ close(p);
close_cli:
close(c);
close_srv:
diff --git a/tools/testing/selftests/bpf/progs/bpf_tracing_net.h b/tools/testing/selftests/bpf/progs/bpf_tracing_net.h
index cfed4df490f3..0b793a102791 100644
--- a/tools/testing/selftests/bpf/progs/bpf_tracing_net.h
+++ b/tools/testing/selftests/bpf/progs/bpf_tracing_net.h
@@ -88,6 +88,7 @@
#define sk_v6_rcv_saddr __sk_common.skc_v6_rcv_saddr
#define sk_flags __sk_common.skc_flags
#define sk_reuse __sk_common.skc_reuse
+#define sk_cookie __sk_common.skc_cookie
#define s6_addr32 in6_u.u6_addr32
diff --git a/tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c b/tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c
new file mode 100644
index 000000000000..3e745793b27a
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/sk_storage_omem_uncharge.c
@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (c) 2023 Facebook */
+#include "vmlinux.h"
+#include "bpf_tracing_net.h"
+#include <bpf/bpf_helpers.h>
+#include <bpf/bpf_tracing.h>
+#include <bpf/bpf_core_read.h>
+
+void *local_storage_ptr = NULL;
+void *sk_ptr = NULL;
+int cookie_found = 0;
+__u64 cookie = 0;
+__u32 omem = 0;
+
+void *bpf_rdonly_cast(void *, __u32) __ksym;
+
+struct {
+ __uint(type, BPF_MAP_TYPE_SK_STORAGE);
+ __uint(map_flags, BPF_F_NO_PREALLOC);
+ __type(key, int);
+ __type(value, int);
+} sk_storage SEC(".maps");
+
+SEC("fexit/bpf_local_storage_destroy")
+int BPF_PROG(bpf_local_storage_destroy, struct bpf_local_storage *local_storage)
+{
+ struct sock *sk;
+
+ if (local_storage_ptr != local_storage)
+ return 0;
+
+ sk = bpf_rdonly_cast(sk_ptr, bpf_core_type_id_kernel(struct sock));
+ if (sk->sk_cookie.counter != cookie)
+ return 0;
+
+ cookie_found++;
+ omem = sk->sk_omem_alloc.counter;
+ local_storage_ptr = NULL;
+
+ return 0;
+}
+
+SEC("fentry/inet6_sock_destruct")
+int BPF_PROG(inet6_sock_destruct, struct sock *sk)
+{
+ int *value;
+
+ if (!cookie || sk->sk_cookie.counter != cookie)
+ return 0;
+
+ value = bpf_sk_storage_get(&sk_storage, sk, 0, 0);
+ if (value && *value == 0xdeadbeef) {
+ cookie_found++;
+ sk_ptr = sk;
+ local_storage_ptr = sk->sk_bpf_storage;
+ }
+
+ return 0;
+}
+
+char _license[] SEC("license") = "GPL";
diff --git a/tools/testing/selftests/net/fib_tests.sh b/tools/testing/selftests/net/fib_tests.sh
index d328af4a149c..e7d2a530618a 100755
--- a/tools/testing/selftests/net/fib_tests.sh
+++ b/tools/testing/selftests/net/fib_tests.sh
@@ -12,7 +12,8 @@ ksft_skip=4
TESTS="unregister down carrier nexthop suppress ipv6_notify ipv4_notify \
ipv6_rt ipv4_rt ipv6_addr_metric ipv4_addr_metric ipv6_route_metrics \
ipv4_route_metrics ipv4_route_v6_gw rp_filter ipv4_del_addr \
- ipv6_del_addr ipv4_mangle ipv6_mangle ipv4_bcast_neigh fib6_gc_test"
+ ipv6_del_addr ipv4_mangle ipv6_mangle ipv4_bcast_neigh fib6_gc_test \
+ ipv4_mpath_list ipv6_mpath_list"
VERBOSE=0
PAUSE_ON_FAIL=no
@@ -2352,6 +2353,156 @@ ipv4_bcast_neigh_test()
cleanup
}
+mpath_dep_check()
+{
+ if [ ! -x "$(command -v mausezahn)" ]; then
+ echo "mausezahn command not found. Skipping test"
+ return 1
+ fi
+
+ if [ ! -x "$(command -v jq)" ]; then
+ echo "jq command not found. Skipping test"
+ return 1
+ fi
+
+ if [ ! -x "$(command -v bc)" ]; then
+ echo "bc command not found. Skipping test"
+ return 1
+ fi
+
+ if [ ! -x "$(command -v perf)" ]; then
+ echo "perf command not found. Skipping test"
+ return 1
+ fi
+
+ perf list fib:* | grep -q fib_table_lookup
+ if [ $? -ne 0 ]; then
+ echo "IPv4 FIB tracepoint not found. Skipping test"
+ return 1
+ fi
+
+ perf list fib6:* | grep -q fib6_table_lookup
+ if [ $? -ne 0 ]; then
+ echo "IPv6 FIB tracepoint not found. Skipping test"
+ return 1
+ fi
+
+ return 0
+}
+
+link_stats_get()
+{
+ local ns=$1; shift
+ local dev=$1; shift
+ local dir=$1; shift
+ local stat=$1; shift
+
+ ip -n $ns -j -s link show dev $dev \
+ | jq '.[]["stats64"]["'$dir'"]["'$stat'"]'
+}
+
+list_rcv_eval()
+{
+ local file=$1; shift
+ local expected=$1; shift
+
+ local count=$(tail -n 1 $file | jq '.["counter-value"] | tonumber | floor')
+ local ratio=$(echo "scale=2; $count / $expected" | bc -l)
+ local res=$(echo "$ratio >= 0.95" | bc)
+ [[ $res -eq 1 ]]
+ log_test $? 0 "Multipath route hit ratio ($ratio)"
+}
+
+ipv4_mpath_list_test()
+{
+ echo
+ echo "IPv4 multipath list receive tests"
+
+ mpath_dep_check || return 1
+
+ route_setup
+
+ set -e
+ run_cmd "ip netns exec ns1 ethtool -K veth1 tcp-segmentation-offload off"
+
+ run_cmd "ip netns exec ns2 bash -c \"echo 20000 > /sys/class/net/veth2/gro_flush_timeout\""
+ run_cmd "ip netns exec ns2 bash -c \"echo 1 > /sys/class/net/veth2/napi_defer_hard_irqs\""
+ run_cmd "ip netns exec ns2 ethtool -K veth2 generic-receive-offload on"
+ run_cmd "ip -n ns2 link add name nh1 up type dummy"
+ run_cmd "ip -n ns2 link add name nh2 up type dummy"
+ run_cmd "ip -n ns2 address add 172.16.201.1/24 dev nh1"
+ run_cmd "ip -n ns2 address add 172.16.202.1/24 dev nh2"
+ run_cmd "ip -n ns2 neigh add 172.16.201.2 lladdr 00:11:22:33:44:55 nud perm dev nh1"
+ run_cmd "ip -n ns2 neigh add 172.16.202.2 lladdr 00:aa:bb:cc:dd:ee nud perm dev nh2"
+ run_cmd "ip -n ns2 route add 203.0.113.0/24
+ nexthop via 172.16.201.2 nexthop via 172.16.202.2"
+ run_cmd "ip netns exec ns2 sysctl -qw net.ipv4.fib_multipath_hash_policy=1"
+ set +e
+
+ local dmac=$(ip -n ns2 -j link show dev veth2 | jq -r '.[]["address"]')
+ local tmp_file=$(mktemp)
+ local cmd="ip netns exec ns1 mausezahn veth1 -a own -b $dmac
+ -A 172.16.101.1 -B 203.0.113.1 -t udp 'sp=12345,dp=0-65535' -q"
+
+ # Packets forwarded in a list using a multipath route must not reuse a
+ # cached result so that a flow always hits the same nexthop. In other
+ # words, the FIB lookup tracepoint needs to be triggered for every
+ # packet.
+ local t0_rx_pkts=$(link_stats_get ns2 veth2 rx packets)
+ run_cmd "perf stat -e fib:fib_table_lookup --filter 'err == 0' -j -o $tmp_file -- $cmd"
+ local t1_rx_pkts=$(link_stats_get ns2 veth2 rx packets)
+ local diff=$(echo $t1_rx_pkts - $t0_rx_pkts | bc -l)
+ list_rcv_eval $tmp_file $diff
+
+ rm $tmp_file
+ route_cleanup
+}
+
+ipv6_mpath_list_test()
+{
+ echo
+ echo "IPv6 multipath list receive tests"
+
+ mpath_dep_check || return 1
+
+ route_setup
+
+ set -e
+ run_cmd "ip netns exec ns1 ethtool -K veth1 tcp-segmentation-offload off"
+
+ run_cmd "ip netns exec ns2 bash -c \"echo 20000 > /sys/class/net/veth2/gro_flush_timeout\""
+ run_cmd "ip netns exec ns2 bash -c \"echo 1 > /sys/class/net/veth2/napi_defer_hard_irqs\""
+ run_cmd "ip netns exec ns2 ethtool -K veth2 generic-receive-offload on"
+ run_cmd "ip -n ns2 link add name nh1 up type dummy"
+ run_cmd "ip -n ns2 link add name nh2 up type dummy"
+ run_cmd "ip -n ns2 -6 address add 2001:db8:201::1/64 dev nh1"
+ run_cmd "ip -n ns2 -6 address add 2001:db8:202::1/64 dev nh2"
+ run_cmd "ip -n ns2 -6 neigh add 2001:db8:201::2 lladdr 00:11:22:33:44:55 nud perm dev nh1"
+ run_cmd "ip -n ns2 -6 neigh add 2001:db8:202::2 lladdr 00:aa:bb:cc:dd:ee nud perm dev nh2"
+ run_cmd "ip -n ns2 -6 route add 2001:db8:301::/64
+ nexthop via 2001:db8:201::2 nexthop via 2001:db8:202::2"
+ run_cmd "ip netns exec ns2 sysctl -qw net.ipv6.fib_multipath_hash_policy=1"
+ set +e
+
+ local dmac=$(ip -n ns2 -j link show dev veth2 | jq -r '.[]["address"]')
+ local tmp_file=$(mktemp)
+ local cmd="ip netns exec ns1 mausezahn -6 veth1 -a own -b $dmac
+ -A 2001:db8:101::1 -B 2001:db8:301::1 -t udp 'sp=12345,dp=0-65535' -q"
+
+ # Packets forwarded in a list using a multipath route must not reuse a
+ # cached result so that a flow always hits the same nexthop. In other
+ # words, the FIB lookup tracepoint needs to be triggered for every
+ # packet.
+ local t0_rx_pkts=$(link_stats_get ns2 veth2 rx packets)
+ run_cmd "perf stat -e fib6:fib6_table_lookup --filter 'err == 0' -j -o $tmp_file -- $cmd"
+ local t1_rx_pkts=$(link_stats_get ns2 veth2 rx packets)
+ local diff=$(echo $t1_rx_pkts - $t0_rx_pkts | bc -l)
+ list_rcv_eval $tmp_file $diff
+
+ rm $tmp_file
+ route_cleanup
+}
+
################################################################################
# usage
@@ -2433,6 +2584,8 @@ do
ipv6_mangle) ipv6_mangle_test;;
ipv4_bcast_neigh) ipv4_bcast_neigh_test;;
fib6_gc_test|ipv6_gc) fib6_gc_test;;
+ ipv4_mpath_list) ipv4_mpath_list_test;;
+ ipv6_mpath_list) ipv6_mpath_list_test;;
help) echo "Test names: $TESTS"; exit 0;;
esac
generated by cgit v1.2.3 (git 2.39.0) at 2024-12-23 14:53:55 +0300