diff options
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/fib_lookup.c | 61 |
1 files changed, 53 insertions, 8 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/fib_lookup.c b/tools/testing/selftests/bpf/prog_tests/fib_lookup.c index a1e712105811..2fd05649bad1 100644 --- a/tools/testing/selftests/bpf/prog_tests/fib_lookup.c +++ b/tools/testing/selftests/bpf/prog_tests/fib_lookup.c @@ -1,6 +1,7 @@ // SPDX-License-Identifier: GPL-2.0 /* Copyright (c) 2023 Meta Platforms, Inc. and affiliates. */ +#include <linux/rtnetlink.h> #include <sys/types.h> #include <net/if.h> @@ -15,14 +16,23 @@ #define IPV4_IFACE_ADDR "10.0.0.254" #define IPV4_NUD_FAILED_ADDR "10.0.0.1" #define IPV4_NUD_STALE_ADDR "10.0.0.2" +#define IPV4_TBID_ADDR "172.0.0.254" +#define IPV4_TBID_NET "172.0.0.0" +#define IPV4_TBID_DST "172.0.0.2" +#define IPV6_TBID_ADDR "fd00::FFFF" +#define IPV6_TBID_NET "fd00::" +#define IPV6_TBID_DST "fd00::2" #define DMAC "11:11:11:11:11:11" #define DMAC_INIT { 0x11, 0x11, 0x11, 0x11, 0x11, 0x11, } +#define DMAC2 "01:01:01:01:01:01" +#define DMAC_INIT2 { 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, } struct fib_lookup_test { const char *desc; const char *daddr; int expected_ret; int lookup_flags; + __u32 tbid; __u8 dmac[6]; }; @@ -43,6 +53,22 @@ static const struct fib_lookup_test tests[] = { { .desc = "IPv4 skip neigh", .daddr = IPV4_NUD_FAILED_ADDR, .expected_ret = BPF_FIB_LKUP_RET_SUCCESS, .lookup_flags = BPF_FIB_LOOKUP_SKIP_NEIGH, }, + { .desc = "IPv4 TBID lookup failure", + .daddr = IPV4_TBID_DST, .expected_ret = BPF_FIB_LKUP_RET_NOT_FWDED, + .lookup_flags = BPF_FIB_LOOKUP_DIRECT | BPF_FIB_LOOKUP_TBID, + .tbid = RT_TABLE_MAIN, }, + { .desc = "IPv4 TBID lookup success", + .daddr = IPV4_TBID_DST, .expected_ret = BPF_FIB_LKUP_RET_SUCCESS, + .lookup_flags = BPF_FIB_LOOKUP_DIRECT | BPF_FIB_LOOKUP_TBID, .tbid = 100, + .dmac = DMAC_INIT2, }, + { .desc = "IPv6 TBID lookup failure", + .daddr = IPV6_TBID_DST, .expected_ret = BPF_FIB_LKUP_RET_NOT_FWDED, + .lookup_flags = BPF_FIB_LOOKUP_DIRECT | BPF_FIB_LOOKUP_TBID, + .tbid = RT_TABLE_MAIN, }, + { .desc = "IPv6 TBID lookup success", + .daddr = IPV6_TBID_DST, .expected_ret = BPF_FIB_LKUP_RET_SUCCESS, + .lookup_flags = BPF_FIB_LOOKUP_DIRECT | BPF_FIB_LOOKUP_TBID, .tbid = 100, + .dmac = DMAC_INIT2, }, }; static int ifindex; @@ -53,6 +79,7 @@ static int setup_netns(void) SYS(fail, "ip link add veth1 type veth peer name veth2"); SYS(fail, "ip link set dev veth1 up"); + SYS(fail, "ip link set dev veth2 up"); err = write_sysctl("/proc/sys/net/ipv4/neigh/veth1/gc_stale_time", "900"); if (!ASSERT_OK(err, "write_sysctl(net.ipv4.neigh.veth1.gc_stale_time)")) @@ -70,6 +97,17 @@ static int setup_netns(void) SYS(fail, "ip neigh add %s dev veth1 nud failed", IPV4_NUD_FAILED_ADDR); SYS(fail, "ip neigh add %s dev veth1 lladdr %s nud stale", IPV4_NUD_STALE_ADDR, DMAC); + /* Setup for tbid lookup tests */ + SYS(fail, "ip addr add %s/24 dev veth2", IPV4_TBID_ADDR); + SYS(fail, "ip route del %s/24 dev veth2", IPV4_TBID_NET); + SYS(fail, "ip route add table 100 %s/24 dev veth2", IPV4_TBID_NET); + SYS(fail, "ip neigh add %s dev veth2 lladdr %s nud stale", IPV4_TBID_DST, DMAC2); + + SYS(fail, "ip addr add %s/64 dev veth2", IPV6_TBID_ADDR); + SYS(fail, "ip -6 route del %s/64 dev veth2", IPV6_TBID_NET); + SYS(fail, "ip -6 route add table 100 %s/64 dev veth2", IPV6_TBID_NET); + SYS(fail, "ip neigh add %s dev veth2 lladdr %s nud stale", IPV6_TBID_DST, DMAC2); + err = write_sysctl("/proc/sys/net/ipv4/conf/veth1/forwarding", "1"); if (!ASSERT_OK(err, "write_sysctl(net.ipv4.conf.veth1.forwarding)")) goto fail; @@ -83,7 +121,7 @@ fail: return -1; } -static int set_lookup_params(struct bpf_fib_lookup *params, const char *daddr) +static int set_lookup_params(struct bpf_fib_lookup *params, const struct fib_lookup_test *test) { int ret; @@ -91,8 +129,9 @@ static int set_lookup_params(struct bpf_fib_lookup *params, const char *daddr) params->l4_protocol = IPPROTO_TCP; params->ifindex = ifindex; + params->tbid = test->tbid; - if (inet_pton(AF_INET6, daddr, params->ipv6_dst) == 1) { + if (inet_pton(AF_INET6, test->daddr, params->ipv6_dst) == 1) { params->family = AF_INET6; ret = inet_pton(AF_INET6, IPV6_IFACE_ADDR, params->ipv6_src); if (!ASSERT_EQ(ret, 1, "inet_pton(IPV6_IFACE_ADDR)")) @@ -100,7 +139,7 @@ static int set_lookup_params(struct bpf_fib_lookup *params, const char *daddr) return 0; } - ret = inet_pton(AF_INET, daddr, ¶ms->ipv4_dst); + ret = inet_pton(AF_INET, test->daddr, ¶ms->ipv4_dst); if (!ASSERT_EQ(ret, 1, "convert IP[46] address")) return -1; params->family = AF_INET; @@ -154,13 +193,12 @@ void test_fib_lookup(void) fib_params = &skel->bss->fib_params; for (i = 0; i < ARRAY_SIZE(tests); i++) { - printf("Testing %s\n", tests[i].desc); + printf("Testing %s ", tests[i].desc); - if (set_lookup_params(fib_params, tests[i].daddr)) + if (set_lookup_params(fib_params, &tests[i])) continue; skel->bss->fib_lookup_ret = -1; - skel->bss->lookup_flags = BPF_FIB_LOOKUP_OUTPUT | - tests[i].lookup_flags; + skel->bss->lookup_flags = tests[i].lookup_flags; err = bpf_prog_test_run_opts(prog_fd, &run_opts); if (!ASSERT_OK(err, "bpf_prog_test_run_opts")) @@ -175,7 +213,14 @@ void test_fib_lookup(void) mac_str(expected, tests[i].dmac); mac_str(actual, fib_params->dmac); - printf("dmac expected %s actual %s\n", expected, actual); + printf("dmac expected %s actual %s ", expected, actual); + } + + // ensure tbid is zero'd out after fib lookup. + if (tests[i].lookup_flags & BPF_FIB_LOOKUP_DIRECT) { + if (!ASSERT_EQ(skel->bss->fib_params.tbid, 0, + "expected fib_params.tbid to be zero")) + goto fail; } } |