From: Martin KaFai Lau Date: Fri, 25 Sep 2020 00:04:27 +0000 (-0700) Subject: bpf: selftest: Move sock_fields test into test_progs X-Git-Tag: io_uring-5.10-2020-10-20~32^2~96^2~41^2~5 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=6f521a2bd26870bcd14aac42ff2ce0b1a22ae477;p=linux-2.6-block.git bpf: selftest: Move sock_fields test into test_progs This is a mechanical change to 1. move test_sock_fields.c to prog_tests/sock_fields.c 2. rename progs/test_sock_fields_kern.c to progs/test_sock_fields.c Minimal change is made to the code itself. Next patch will make changes to use new ways of writing test, e.g. use skel and global variables. Signed-off-by: Martin KaFai Lau Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20200925000427.3857814-1-kafai@fb.com --- diff --git a/tools/testing/selftests/bpf/.gitignore b/tools/testing/selftests/bpf/.gitignore index e8fed558b8b8..3ab1200e172f 100644 --- a/tools/testing/selftests/bpf/.gitignore +++ b/tools/testing/selftests/bpf/.gitignore @@ -13,7 +13,6 @@ test_verifier_log feature test_sock test_sock_addr -test_sock_fields urandom_read test_sockmap test_lirc_mode2_user diff --git a/tools/testing/selftests/bpf/Makefile b/tools/testing/selftests/bpf/Makefile index 59a5fa5fe837..bdbeafec371b 100644 --- a/tools/testing/selftests/bpf/Makefile +++ b/tools/testing/selftests/bpf/Makefile @@ -35,7 +35,7 @@ TEST_GEN_PROGS = test_verifier test_tag test_maps test_lru_map test_lpm_map test test_verifier_log test_dev_cgroup test_tcpbpf_user \ test_sock test_sockmap get_cgroup_id_user test_socket_cookie \ test_cgroup_storage \ - test_netcnt test_tcpnotify_user test_sock_fields test_sysctl \ + test_netcnt test_tcpnotify_user test_sysctl \ test_progs-no_alu32 \ test_current_pid_tgid_new_ns diff --git a/tools/testing/selftests/bpf/prog_tests/sock_fields.c b/tools/testing/selftests/bpf/prog_tests/sock_fields.c new file mode 100644 index 000000000000..1138223780fc --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/sock_fields.c @@ -0,0 +1,480 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019 Facebook */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include + +#include "cgroup_helpers.h" +#include "bpf_rlimit.h" + +enum bpf_addr_array_idx { + ADDR_SRV_IDX, + ADDR_CLI_IDX, + __NR_BPF_ADDR_ARRAY_IDX, +}; + +enum bpf_result_array_idx { + EGRESS_SRV_IDX, + EGRESS_CLI_IDX, + INGRESS_LISTEN_IDX, + __NR_BPF_RESULT_ARRAY_IDX, +}; + +enum bpf_linum_array_idx { + EGRESS_LINUM_IDX, + INGRESS_LINUM_IDX, + __NR_BPF_LINUM_ARRAY_IDX, +}; + +struct bpf_spinlock_cnt { + struct bpf_spin_lock lock; + __u32 cnt; +}; + +#define CHECK(condition, tag, format...) ({ \ + int __ret = !!(condition); \ + if (__ret) { \ + printf("%s(%d):FAIL:%s ", __func__, __LINE__, tag); \ + printf(format); \ + printf("\n"); \ + exit(-1); \ + } \ +}) + +#define TEST_CGROUP "/test-bpf-sock-fields" +#define DATA "Hello BPF!" +#define DATA_LEN sizeof(DATA) + +static struct sockaddr_in6 srv_sa6, cli_sa6; +static int sk_pkt_out_cnt10_fd; +static int sk_pkt_out_cnt_fd; +static int linum_map_fd; +static int addr_map_fd; +static int tp_map_fd; +static int sk_map_fd; + +static __u32 addr_srv_idx = ADDR_SRV_IDX; +static __u32 addr_cli_idx = ADDR_CLI_IDX; + +static __u32 egress_srv_idx = EGRESS_SRV_IDX; +static __u32 egress_cli_idx = EGRESS_CLI_IDX; +static __u32 ingress_listen_idx = INGRESS_LISTEN_IDX; + +static __u32 egress_linum_idx = EGRESS_LINUM_IDX; +static __u32 ingress_linum_idx = INGRESS_LINUM_IDX; + +static void init_loopback6(struct sockaddr_in6 *sa6) +{ + memset(sa6, 0, sizeof(*sa6)); + sa6->sin6_family = AF_INET6; + sa6->sin6_addr = in6addr_loopback; +} + +static void print_sk(const struct bpf_sock *sk) +{ + char src_ip4[24], dst_ip4[24]; + char src_ip6[64], dst_ip6[64]; + + inet_ntop(AF_INET, &sk->src_ip4, src_ip4, sizeof(src_ip4)); + inet_ntop(AF_INET6, &sk->src_ip6, src_ip6, sizeof(src_ip6)); + inet_ntop(AF_INET, &sk->dst_ip4, dst_ip4, sizeof(dst_ip4)); + inet_ntop(AF_INET6, &sk->dst_ip6, dst_ip6, sizeof(dst_ip6)); + + printf("state:%u bound_dev_if:%u family:%u type:%u protocol:%u mark:%u priority:%u " + "src_ip4:%x(%s) src_ip6:%x:%x:%x:%x(%s) src_port:%u " + "dst_ip4:%x(%s) dst_ip6:%x:%x:%x:%x(%s) dst_port:%u\n", + sk->state, sk->bound_dev_if, sk->family, sk->type, sk->protocol, + sk->mark, sk->priority, + sk->src_ip4, src_ip4, + sk->src_ip6[0], sk->src_ip6[1], sk->src_ip6[2], sk->src_ip6[3], + src_ip6, sk->src_port, + sk->dst_ip4, dst_ip4, + sk->dst_ip6[0], sk->dst_ip6[1], sk->dst_ip6[2], sk->dst_ip6[3], + dst_ip6, ntohs(sk->dst_port)); +} + +static void print_tp(const struct bpf_tcp_sock *tp) +{ + printf("snd_cwnd:%u srtt_us:%u rtt_min:%u snd_ssthresh:%u rcv_nxt:%u " + "snd_nxt:%u snd:una:%u mss_cache:%u ecn_flags:%u " + "rate_delivered:%u rate_interval_us:%u packets_out:%u " + "retrans_out:%u total_retrans:%u segs_in:%u data_segs_in:%u " + "segs_out:%u data_segs_out:%u lost_out:%u sacked_out:%u " + "bytes_received:%llu bytes_acked:%llu\n", + tp->snd_cwnd, tp->srtt_us, tp->rtt_min, tp->snd_ssthresh, + tp->rcv_nxt, tp->snd_nxt, tp->snd_una, tp->mss_cache, + tp->ecn_flags, tp->rate_delivered, tp->rate_interval_us, + tp->packets_out, tp->retrans_out, tp->total_retrans, + tp->segs_in, tp->data_segs_in, tp->segs_out, + tp->data_segs_out, tp->lost_out, tp->sacked_out, + tp->bytes_received, tp->bytes_acked); +} + +static void check_result(void) +{ + struct bpf_tcp_sock srv_tp, cli_tp, listen_tp; + struct bpf_sock srv_sk, cli_sk, listen_sk; + __u32 ingress_linum, egress_linum; + int err; + + err = bpf_map_lookup_elem(linum_map_fd, &egress_linum_idx, + &egress_linum); + CHECK(err == -1, "bpf_map_lookup_elem(linum_map_fd)", + "err:%d errno:%d", err, errno); + + err = bpf_map_lookup_elem(linum_map_fd, &ingress_linum_idx, + &ingress_linum); + CHECK(err == -1, "bpf_map_lookup_elem(linum_map_fd)", + "err:%d errno:%d", err, errno); + + err = bpf_map_lookup_elem(sk_map_fd, &egress_srv_idx, &srv_sk); + CHECK(err == -1, "bpf_map_lookup_elem(sk_map_fd, &egress_srv_idx)", + "err:%d errno:%d", err, errno); + err = bpf_map_lookup_elem(tp_map_fd, &egress_srv_idx, &srv_tp); + CHECK(err == -1, "bpf_map_lookup_elem(tp_map_fd, &egress_srv_idx)", + "err:%d errno:%d", err, errno); + + err = bpf_map_lookup_elem(sk_map_fd, &egress_cli_idx, &cli_sk); + CHECK(err == -1, "bpf_map_lookup_elem(sk_map_fd, &egress_cli_idx)", + "err:%d errno:%d", err, errno); + err = bpf_map_lookup_elem(tp_map_fd, &egress_cli_idx, &cli_tp); + CHECK(err == -1, "bpf_map_lookup_elem(tp_map_fd, &egress_cli_idx)", + "err:%d errno:%d", err, errno); + + err = bpf_map_lookup_elem(sk_map_fd, &ingress_listen_idx, &listen_sk); + CHECK(err == -1, "bpf_map_lookup_elem(sk_map_fd, &ingress_listen_idx)", + "err:%d errno:%d", err, errno); + err = bpf_map_lookup_elem(tp_map_fd, &ingress_listen_idx, &listen_tp); + CHECK(err == -1, "bpf_map_lookup_elem(tp_map_fd, &ingress_listen_idx)", + "err:%d errno:%d", err, errno); + + printf("listen_sk: "); + print_sk(&listen_sk); + printf("\n"); + + printf("srv_sk: "); + print_sk(&srv_sk); + printf("\n"); + + printf("cli_sk: "); + print_sk(&cli_sk); + printf("\n"); + + printf("listen_tp: "); + print_tp(&listen_tp); + printf("\n"); + + printf("srv_tp: "); + print_tp(&srv_tp); + printf("\n"); + + printf("cli_tp: "); + print_tp(&cli_tp); + printf("\n"); + + CHECK(listen_sk.state != 10 || + listen_sk.family != AF_INET6 || + listen_sk.protocol != IPPROTO_TCP || + memcmp(listen_sk.src_ip6, &in6addr_loopback, + sizeof(listen_sk.src_ip6)) || + listen_sk.dst_ip6[0] || listen_sk.dst_ip6[1] || + listen_sk.dst_ip6[2] || listen_sk.dst_ip6[3] || + listen_sk.src_port != ntohs(srv_sa6.sin6_port) || + listen_sk.dst_port, + "Unexpected listen_sk", + "Check listen_sk output. ingress_linum:%u", + ingress_linum); + + CHECK(srv_sk.state == 10 || + !srv_sk.state || + srv_sk.family != AF_INET6 || + srv_sk.protocol != IPPROTO_TCP || + memcmp(srv_sk.src_ip6, &in6addr_loopback, + sizeof(srv_sk.src_ip6)) || + memcmp(srv_sk.dst_ip6, &in6addr_loopback, + sizeof(srv_sk.dst_ip6)) || + srv_sk.src_port != ntohs(srv_sa6.sin6_port) || + srv_sk.dst_port != cli_sa6.sin6_port, + "Unexpected srv_sk", "Check srv_sk output. egress_linum:%u", + egress_linum); + + CHECK(cli_sk.state == 10 || + !cli_sk.state || + cli_sk.family != AF_INET6 || + cli_sk.protocol != IPPROTO_TCP || + memcmp(cli_sk.src_ip6, &in6addr_loopback, + sizeof(cli_sk.src_ip6)) || + memcmp(cli_sk.dst_ip6, &in6addr_loopback, + sizeof(cli_sk.dst_ip6)) || + cli_sk.src_port != ntohs(cli_sa6.sin6_port) || + cli_sk.dst_port != srv_sa6.sin6_port, + "Unexpected cli_sk", "Check cli_sk output. egress_linum:%u", + egress_linum); + + CHECK(listen_tp.data_segs_out || + listen_tp.data_segs_in || + listen_tp.total_retrans || + listen_tp.bytes_acked, + "Unexpected listen_tp", "Check listen_tp output. ingress_linum:%u", + ingress_linum); + + CHECK(srv_tp.data_segs_out != 2 || + srv_tp.data_segs_in || + srv_tp.snd_cwnd != 10 || + srv_tp.total_retrans || + srv_tp.bytes_acked != 2 * DATA_LEN, + "Unexpected srv_tp", "Check srv_tp output. egress_linum:%u", + egress_linum); + + CHECK(cli_tp.data_segs_out || + cli_tp.data_segs_in != 2 || + cli_tp.snd_cwnd != 10 || + cli_tp.total_retrans || + cli_tp.bytes_received != 2 * DATA_LEN, + "Unexpected cli_tp", "Check cli_tp output. egress_linum:%u", + egress_linum); +} + +static void check_sk_pkt_out_cnt(int accept_fd, int cli_fd) +{ + struct bpf_spinlock_cnt pkt_out_cnt = {}, pkt_out_cnt10 = {}; + int err; + + pkt_out_cnt.cnt = ~0; + pkt_out_cnt10.cnt = ~0; + err = bpf_map_lookup_elem(sk_pkt_out_cnt_fd, &accept_fd, &pkt_out_cnt); + if (!err) + err = bpf_map_lookup_elem(sk_pkt_out_cnt10_fd, &accept_fd, + &pkt_out_cnt10); + + /* The bpf prog only counts for fullsock and + * passive conneciton did not become fullsock until 3WHS + * had been finished. + * The bpf prog only counted two data packet out but we + * specially init accept_fd's pkt_out_cnt by 2 in + * init_sk_storage(). Hence, 4 here. + */ + CHECK(err || pkt_out_cnt.cnt != 4 || pkt_out_cnt10.cnt != 40, + "bpf_map_lookup_elem(sk_pkt_out_cnt, &accept_fd)", + "err:%d errno:%d pkt_out_cnt:%u pkt_out_cnt10:%u", + err, errno, pkt_out_cnt.cnt, pkt_out_cnt10.cnt); + + pkt_out_cnt.cnt = ~0; + pkt_out_cnt10.cnt = ~0; + err = bpf_map_lookup_elem(sk_pkt_out_cnt_fd, &cli_fd, &pkt_out_cnt); + if (!err) + err = bpf_map_lookup_elem(sk_pkt_out_cnt10_fd, &cli_fd, + &pkt_out_cnt10); + /* Active connection is fullsock from the beginning. + * 1 SYN and 1 ACK during 3WHS + * 2 Acks on data packet. + * + * The bpf_prog initialized it to 0xeB9F. + */ + CHECK(err || pkt_out_cnt.cnt != 0xeB9F + 4 || + pkt_out_cnt10.cnt != 0xeB9F + 40, + "bpf_map_lookup_elem(sk_pkt_out_cnt, &cli_fd)", + "err:%d errno:%d pkt_out_cnt:%u pkt_out_cnt10:%u", + err, errno, pkt_out_cnt.cnt, pkt_out_cnt10.cnt); +} + +static void init_sk_storage(int sk_fd, __u32 pkt_out_cnt) +{ + struct bpf_spinlock_cnt scnt = {}; + int err; + + scnt.cnt = pkt_out_cnt; + err = bpf_map_update_elem(sk_pkt_out_cnt_fd, &sk_fd, &scnt, + BPF_NOEXIST); + CHECK(err, "bpf_map_update_elem(sk_pkt_out_cnt_fd)", + "err:%d errno:%d", err, errno); + + scnt.cnt *= 10; + err = bpf_map_update_elem(sk_pkt_out_cnt10_fd, &sk_fd, &scnt, + BPF_NOEXIST); + CHECK(err, "bpf_map_update_elem(sk_pkt_out_cnt10_fd)", + "err:%d errno:%d", err, errno); +} + +static void test(void) +{ + int listen_fd, cli_fd, accept_fd, epfd, err; + struct epoll_event ev; + socklen_t addrlen; + int i; + + addrlen = sizeof(struct sockaddr_in6); + ev.events = EPOLLIN; + + epfd = epoll_create(1); + CHECK(epfd == -1, "epoll_create()", "epfd:%d errno:%d", epfd, errno); + + /* Prepare listen_fd */ + listen_fd = socket(AF_INET6, SOCK_STREAM | SOCK_NONBLOCK, 0); + CHECK(listen_fd == -1, "socket()", "listen_fd:%d errno:%d", + listen_fd, errno); + + init_loopback6(&srv_sa6); + err = bind(listen_fd, (struct sockaddr *)&srv_sa6, sizeof(srv_sa6)); + CHECK(err, "bind(listen_fd)", "err:%d errno:%d", err, errno); + + err = getsockname(listen_fd, (struct sockaddr *)&srv_sa6, &addrlen); + CHECK(err, "getsockname(listen_fd)", "err:%d errno:%d", err, errno); + + err = listen(listen_fd, 1); + CHECK(err, "listen(listen_fd)", "err:%d errno:%d", err, errno); + + /* Prepare cli_fd */ + cli_fd = socket(AF_INET6, SOCK_STREAM | SOCK_NONBLOCK, 0); + CHECK(cli_fd == -1, "socket()", "cli_fd:%d errno:%d", cli_fd, errno); + + init_loopback6(&cli_sa6); + err = bind(cli_fd, (struct sockaddr *)&cli_sa6, sizeof(cli_sa6)); + CHECK(err, "bind(cli_fd)", "err:%d errno:%d", err, errno); + + err = getsockname(cli_fd, (struct sockaddr *)&cli_sa6, &addrlen); + CHECK(err, "getsockname(cli_fd)", "err:%d errno:%d", + err, errno); + + /* Update addr_map with srv_sa6 and cli_sa6 */ + err = bpf_map_update_elem(addr_map_fd, &addr_srv_idx, &srv_sa6, 0); + CHECK(err, "map_update", "err:%d errno:%d", err, errno); + + err = bpf_map_update_elem(addr_map_fd, &addr_cli_idx, &cli_sa6, 0); + CHECK(err, "map_update", "err:%d errno:%d", err, errno); + + /* Connect from cli_sa6 to srv_sa6 */ + err = connect(cli_fd, (struct sockaddr *)&srv_sa6, addrlen); + printf("srv_sa6.sin6_port:%u cli_sa6.sin6_port:%u\n\n", + ntohs(srv_sa6.sin6_port), ntohs(cli_sa6.sin6_port)); + CHECK(err && errno != EINPROGRESS, + "connect(cli_fd)", "err:%d errno:%d", err, errno); + + ev.data.fd = listen_fd; + err = epoll_ctl(epfd, EPOLL_CTL_ADD, listen_fd, &ev); + CHECK(err, "epoll_ctl(EPOLL_CTL_ADD, listen_fd)", "err:%d errno:%d", + err, errno); + + /* Accept the connection */ + /* Have some timeout in accept(listen_fd). Just in case. */ + err = epoll_wait(epfd, &ev, 1, 1000); + CHECK(err != 1 || ev.data.fd != listen_fd, + "epoll_wait(listen_fd)", + "err:%d errno:%d ev.data.fd:%d listen_fd:%d", + err, errno, ev.data.fd, listen_fd); + + accept_fd = accept(listen_fd, NULL, NULL); + CHECK(accept_fd == -1, "accept(listen_fd)", "accept_fd:%d errno:%d", + accept_fd, errno); + close(listen_fd); + + ev.data.fd = cli_fd; + err = epoll_ctl(epfd, EPOLL_CTL_ADD, cli_fd, &ev); + CHECK(err, "epoll_ctl(EPOLL_CTL_ADD, cli_fd)", "err:%d errno:%d", + err, errno); + + init_sk_storage(accept_fd, 2); + + for (i = 0; i < 2; i++) { + /* Send some data from accept_fd to cli_fd */ + err = send(accept_fd, DATA, DATA_LEN, 0); + CHECK(err != DATA_LEN, "send(accept_fd)", "err:%d errno:%d", + err, errno); + + /* Have some timeout in recv(cli_fd). Just in case. */ + err = epoll_wait(epfd, &ev, 1, 1000); + CHECK(err != 1 || ev.data.fd != cli_fd, + "epoll_wait(cli_fd)", "err:%d errno:%d ev.data.fd:%d cli_fd:%d", + err, errno, ev.data.fd, cli_fd); + + err = recv(cli_fd, NULL, 0, MSG_TRUNC); + CHECK(err, "recv(cli_fd)", "err:%d errno:%d", err, errno); + } + + check_sk_pkt_out_cnt(accept_fd, cli_fd); + + close(epfd); + close(accept_fd); + close(cli_fd); + + check_result(); +} + +void test_sock_fields(void) +{ + struct bpf_prog_load_attr attr = { + .file = "test_sock_fields.o", + .prog_type = BPF_PROG_TYPE_CGROUP_SKB, + .prog_flags = BPF_F_TEST_RND_HI32, + }; + int cgroup_fd, egress_fd, ingress_fd, err; + struct bpf_program *ingress_prog; + struct bpf_object *obj; + struct bpf_map *map; + + /* Create a cgroup, get fd, and join it */ + cgroup_fd = cgroup_setup_and_join(TEST_CGROUP); + CHECK(cgroup_fd < 0, "cgroup_setup_and_join()", + "cgroup_fd:%d errno:%d", cgroup_fd, errno); + atexit(cleanup_cgroup_environment); + + err = bpf_prog_load_xattr(&attr, &obj, &egress_fd); + CHECK(err, "bpf_prog_load_xattr()", "err:%d", err); + + ingress_prog = bpf_object__find_program_by_title(obj, + "cgroup_skb/ingress"); + CHECK(!ingress_prog, + "bpf_object__find_program_by_title(cgroup_skb/ingress)", + "not found"); + ingress_fd = bpf_program__fd(ingress_prog); + + err = bpf_prog_attach(egress_fd, cgroup_fd, BPF_CGROUP_INET_EGRESS, 0); + CHECK(err == -1, "bpf_prog_attach(CPF_CGROUP_INET_EGRESS)", + "err:%d errno%d", err, errno); + + err = bpf_prog_attach(ingress_fd, cgroup_fd, + BPF_CGROUP_INET_INGRESS, 0); + CHECK(err == -1, "bpf_prog_attach(CPF_CGROUP_INET_INGRESS)", + "err:%d errno%d", err, errno); + close(cgroup_fd); + + map = bpf_object__find_map_by_name(obj, "addr_map"); + CHECK(!map, "cannot find addr_map", "(null)"); + addr_map_fd = bpf_map__fd(map); + + map = bpf_object__find_map_by_name(obj, "sock_result_map"); + CHECK(!map, "cannot find sock_result_map", "(null)"); + sk_map_fd = bpf_map__fd(map); + + map = bpf_object__find_map_by_name(obj, "tcp_sock_result_map"); + CHECK(!map, "cannot find tcp_sock_result_map", "(null)"); + tp_map_fd = bpf_map__fd(map); + + map = bpf_object__find_map_by_name(obj, "linum_map"); + CHECK(!map, "cannot find linum_map", "(null)"); + linum_map_fd = bpf_map__fd(map); + + map = bpf_object__find_map_by_name(obj, "sk_pkt_out_cnt"); + CHECK(!map, "cannot find sk_pkt_out_cnt", "(null)"); + sk_pkt_out_cnt_fd = bpf_map__fd(map); + + map = bpf_object__find_map_by_name(obj, "sk_pkt_out_cnt10"); + CHECK(!map, "cannot find sk_pkt_out_cnt10", "(null)"); + sk_pkt_out_cnt10_fd = bpf_map__fd(map); + + test(); + + bpf_object__close(obj); + cleanup_cgroup_environment(); + + printf("PASS\n"); +} diff --git a/tools/testing/selftests/bpf/progs/test_sock_fields.c b/tools/testing/selftests/bpf/progs/test_sock_fields.c new file mode 100644 index 000000000000..9bcaa37f476a --- /dev/null +++ b/tools/testing/selftests/bpf/progs/test_sock_fields.c @@ -0,0 +1,255 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2019 Facebook */ + +#include +#include +#include + +#include +#include + +enum bpf_addr_array_idx { + ADDR_SRV_IDX, + ADDR_CLI_IDX, + __NR_BPF_ADDR_ARRAY_IDX, +}; + +enum bpf_result_array_idx { + EGRESS_SRV_IDX, + EGRESS_CLI_IDX, + INGRESS_LISTEN_IDX, + __NR_BPF_RESULT_ARRAY_IDX, +}; + +enum bpf_linum_array_idx { + EGRESS_LINUM_IDX, + INGRESS_LINUM_IDX, + __NR_BPF_LINUM_ARRAY_IDX, +}; + +struct { + __uint(type, BPF_MAP_TYPE_ARRAY); + __uint(max_entries, __NR_BPF_ADDR_ARRAY_IDX); + __type(key, __u32); + __type(value, struct sockaddr_in6); +} addr_map SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_ARRAY); + __uint(max_entries, __NR_BPF_RESULT_ARRAY_IDX); + __type(key, __u32); + __type(value, struct bpf_sock); +} sock_result_map SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_ARRAY); + __uint(max_entries, __NR_BPF_RESULT_ARRAY_IDX); + __type(key, __u32); + __type(value, struct bpf_tcp_sock); +} tcp_sock_result_map SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_ARRAY); + __uint(max_entries, __NR_BPF_LINUM_ARRAY_IDX); + __type(key, __u32); + __type(value, __u32); +} linum_map SEC(".maps"); + +struct bpf_spinlock_cnt { + struct bpf_spin_lock lock; + __u32 cnt; +}; + +struct { + __uint(type, BPF_MAP_TYPE_SK_STORAGE); + __uint(map_flags, BPF_F_NO_PREALLOC); + __type(key, int); + __type(value, struct bpf_spinlock_cnt); +} sk_pkt_out_cnt SEC(".maps"); + +struct { + __uint(type, BPF_MAP_TYPE_SK_STORAGE); + __uint(map_flags, BPF_F_NO_PREALLOC); + __type(key, int); + __type(value, struct bpf_spinlock_cnt); +} sk_pkt_out_cnt10 SEC(".maps"); + +static bool is_loopback6(__u32 *a6) +{ + return !a6[0] && !a6[1] && !a6[2] && a6[3] == bpf_htonl(1); +} + +static void skcpy(struct bpf_sock *dst, + const struct bpf_sock *src) +{ + dst->bound_dev_if = src->bound_dev_if; + dst->family = src->family; + dst->type = src->type; + dst->protocol = src->protocol; + dst->mark = src->mark; + dst->priority = src->priority; + dst->src_ip4 = src->src_ip4; + dst->src_ip6[0] = src->src_ip6[0]; + dst->src_ip6[1] = src->src_ip6[1]; + dst->src_ip6[2] = src->src_ip6[2]; + dst->src_ip6[3] = src->src_ip6[3]; + dst->src_port = src->src_port; + dst->dst_ip4 = src->dst_ip4; + dst->dst_ip6[0] = src->dst_ip6[0]; + dst->dst_ip6[1] = src->dst_ip6[1]; + dst->dst_ip6[2] = src->dst_ip6[2]; + dst->dst_ip6[3] = src->dst_ip6[3]; + dst->dst_port = src->dst_port; + dst->state = src->state; +} + +static void tpcpy(struct bpf_tcp_sock *dst, + const struct bpf_tcp_sock *src) +{ + dst->snd_cwnd = src->snd_cwnd; + dst->srtt_us = src->srtt_us; + dst->rtt_min = src->rtt_min; + dst->snd_ssthresh = src->snd_ssthresh; + dst->rcv_nxt = src->rcv_nxt; + dst->snd_nxt = src->snd_nxt; + dst->snd_una = src->snd_una; + dst->mss_cache = src->mss_cache; + dst->ecn_flags = src->ecn_flags; + dst->rate_delivered = src->rate_delivered; + dst->rate_interval_us = src->rate_interval_us; + dst->packets_out = src->packets_out; + dst->retrans_out = src->retrans_out; + dst->total_retrans = src->total_retrans; + dst->segs_in = src->segs_in; + dst->data_segs_in = src->data_segs_in; + dst->segs_out = src->segs_out; + dst->data_segs_out = src->data_segs_out; + dst->lost_out = src->lost_out; + dst->sacked_out = src->sacked_out; + dst->bytes_received = src->bytes_received; + dst->bytes_acked = src->bytes_acked; +} + +#define RETURN { \ + linum = __LINE__; \ + bpf_map_update_elem(&linum_map, &linum_idx, &linum, 0); \ + return 1; \ +} + +SEC("cgroup_skb/egress") +int egress_read_sock_fields(struct __sk_buff *skb) +{ + struct bpf_spinlock_cnt cli_cnt_init = { .lock = 0, .cnt = 0xeB9F }; + __u32 srv_idx = ADDR_SRV_IDX, cli_idx = ADDR_CLI_IDX, result_idx; + struct bpf_spinlock_cnt *pkt_out_cnt, *pkt_out_cnt10; + struct sockaddr_in6 *srv_sa6, *cli_sa6; + struct bpf_tcp_sock *tp, *tp_ret; + struct bpf_sock *sk, *sk_ret; + __u32 linum, linum_idx; + + linum_idx = EGRESS_LINUM_IDX; + + sk = skb->sk; + if (!sk || sk->state == 10) + RETURN; + + sk = bpf_sk_fullsock(sk); + if (!sk || sk->family != AF_INET6 || sk->protocol != IPPROTO_TCP || + !is_loopback6(sk->src_ip6)) + RETURN; + + tp = bpf_tcp_sock(sk); + if (!tp) + RETURN; + + srv_sa6 = bpf_map_lookup_elem(&addr_map, &srv_idx); + cli_sa6 = bpf_map_lookup_elem(&addr_map, &cli_idx); + if (!srv_sa6 || !cli_sa6) + RETURN; + + if (sk->src_port == bpf_ntohs(srv_sa6->sin6_port)) + result_idx = EGRESS_SRV_IDX; + else if (sk->src_port == bpf_ntohs(cli_sa6->sin6_port)) + result_idx = EGRESS_CLI_IDX; + else + RETURN; + + sk_ret = bpf_map_lookup_elem(&sock_result_map, &result_idx); + tp_ret = bpf_map_lookup_elem(&tcp_sock_result_map, &result_idx); + if (!sk_ret || !tp_ret) + RETURN; + + skcpy(sk_ret, sk); + tpcpy(tp_ret, tp); + + if (result_idx == EGRESS_SRV_IDX) { + /* The userspace has created it for srv sk */ + pkt_out_cnt = bpf_sk_storage_get(&sk_pkt_out_cnt, sk, 0, 0); + pkt_out_cnt10 = bpf_sk_storage_get(&sk_pkt_out_cnt10, sk, + 0, 0); + } else { + pkt_out_cnt = bpf_sk_storage_get(&sk_pkt_out_cnt, sk, + &cli_cnt_init, + BPF_SK_STORAGE_GET_F_CREATE); + pkt_out_cnt10 = bpf_sk_storage_get(&sk_pkt_out_cnt10, + sk, &cli_cnt_init, + BPF_SK_STORAGE_GET_F_CREATE); + } + + if (!pkt_out_cnt || !pkt_out_cnt10) + RETURN; + + /* Even both cnt and cnt10 have lock defined in their BTF, + * intentionally one cnt takes lock while one does not + * as a test for the spinlock support in BPF_MAP_TYPE_SK_STORAGE. + */ + pkt_out_cnt->cnt += 1; + bpf_spin_lock(&pkt_out_cnt10->lock); + pkt_out_cnt10->cnt += 10; + bpf_spin_unlock(&pkt_out_cnt10->lock); + + RETURN; +} + +SEC("cgroup_skb/ingress") +int ingress_read_sock_fields(struct __sk_buff *skb) +{ + __u32 srv_idx = ADDR_SRV_IDX, result_idx = INGRESS_LISTEN_IDX; + struct bpf_tcp_sock *tp, *tp_ret; + struct bpf_sock *sk, *sk_ret; + struct sockaddr_in6 *srv_sa6; + __u32 linum, linum_idx; + + linum_idx = INGRESS_LINUM_IDX; + + sk = skb->sk; + if (!sk || sk->family != AF_INET6 || !is_loopback6(sk->src_ip6)) + RETURN; + + srv_sa6 = bpf_map_lookup_elem(&addr_map, &srv_idx); + if (!srv_sa6 || sk->src_port != bpf_ntohs(srv_sa6->sin6_port)) + RETURN; + + if (sk->state != 10 && sk->state != 12) + RETURN; + + sk = bpf_get_listener_sock(sk); + if (!sk) + RETURN; + + tp = bpf_tcp_sock(sk); + if (!tp) + RETURN; + + sk_ret = bpf_map_lookup_elem(&sock_result_map, &result_idx); + tp_ret = bpf_map_lookup_elem(&tcp_sock_result_map, &result_idx); + if (!sk_ret || !tp_ret) + RETURN; + + skcpy(sk_ret, sk); + tpcpy(tp_ret, tp); + + RETURN; +} + +char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/progs/test_sock_fields_kern.c b/tools/testing/selftests/bpf/progs/test_sock_fields_kern.c deleted file mode 100644 index 9bcaa37f476a..000000000000 --- a/tools/testing/selftests/bpf/progs/test_sock_fields_kern.c +++ /dev/null @@ -1,255 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* Copyright (c) 2019 Facebook */ - -#include -#include -#include - -#include -#include - -enum bpf_addr_array_idx { - ADDR_SRV_IDX, - ADDR_CLI_IDX, - __NR_BPF_ADDR_ARRAY_IDX, -}; - -enum bpf_result_array_idx { - EGRESS_SRV_IDX, - EGRESS_CLI_IDX, - INGRESS_LISTEN_IDX, - __NR_BPF_RESULT_ARRAY_IDX, -}; - -enum bpf_linum_array_idx { - EGRESS_LINUM_IDX, - INGRESS_LINUM_IDX, - __NR_BPF_LINUM_ARRAY_IDX, -}; - -struct { - __uint(type, BPF_MAP_TYPE_ARRAY); - __uint(max_entries, __NR_BPF_ADDR_ARRAY_IDX); - __type(key, __u32); - __type(value, struct sockaddr_in6); -} addr_map SEC(".maps"); - -struct { - __uint(type, BPF_MAP_TYPE_ARRAY); - __uint(max_entries, __NR_BPF_RESULT_ARRAY_IDX); - __type(key, __u32); - __type(value, struct bpf_sock); -} sock_result_map SEC(".maps"); - -struct { - __uint(type, BPF_MAP_TYPE_ARRAY); - __uint(max_entries, __NR_BPF_RESULT_ARRAY_IDX); - __type(key, __u32); - __type(value, struct bpf_tcp_sock); -} tcp_sock_result_map SEC(".maps"); - -struct { - __uint(type, BPF_MAP_TYPE_ARRAY); - __uint(max_entries, __NR_BPF_LINUM_ARRAY_IDX); - __type(key, __u32); - __type(value, __u32); -} linum_map SEC(".maps"); - -struct bpf_spinlock_cnt { - struct bpf_spin_lock lock; - __u32 cnt; -}; - -struct { - __uint(type, BPF_MAP_TYPE_SK_STORAGE); - __uint(map_flags, BPF_F_NO_PREALLOC); - __type(key, int); - __type(value, struct bpf_spinlock_cnt); -} sk_pkt_out_cnt SEC(".maps"); - -struct { - __uint(type, BPF_MAP_TYPE_SK_STORAGE); - __uint(map_flags, BPF_F_NO_PREALLOC); - __type(key, int); - __type(value, struct bpf_spinlock_cnt); -} sk_pkt_out_cnt10 SEC(".maps"); - -static bool is_loopback6(__u32 *a6) -{ - return !a6[0] && !a6[1] && !a6[2] && a6[3] == bpf_htonl(1); -} - -static void skcpy(struct bpf_sock *dst, - const struct bpf_sock *src) -{ - dst->bound_dev_if = src->bound_dev_if; - dst->family = src->family; - dst->type = src->type; - dst->protocol = src->protocol; - dst->mark = src->mark; - dst->priority = src->priority; - dst->src_ip4 = src->src_ip4; - dst->src_ip6[0] = src->src_ip6[0]; - dst->src_ip6[1] = src->src_ip6[1]; - dst->src_ip6[2] = src->src_ip6[2]; - dst->src_ip6[3] = src->src_ip6[3]; - dst->src_port = src->src_port; - dst->dst_ip4 = src->dst_ip4; - dst->dst_ip6[0] = src->dst_ip6[0]; - dst->dst_ip6[1] = src->dst_ip6[1]; - dst->dst_ip6[2] = src->dst_ip6[2]; - dst->dst_ip6[3] = src->dst_ip6[3]; - dst->dst_port = src->dst_port; - dst->state = src->state; -} - -static void tpcpy(struct bpf_tcp_sock *dst, - const struct bpf_tcp_sock *src) -{ - dst->snd_cwnd = src->snd_cwnd; - dst->srtt_us = src->srtt_us; - dst->rtt_min = src->rtt_min; - dst->snd_ssthresh = src->snd_ssthresh; - dst->rcv_nxt = src->rcv_nxt; - dst->snd_nxt = src->snd_nxt; - dst->snd_una = src->snd_una; - dst->mss_cache = src->mss_cache; - dst->ecn_flags = src->ecn_flags; - dst->rate_delivered = src->rate_delivered; - dst->rate_interval_us = src->rate_interval_us; - dst->packets_out = src->packets_out; - dst->retrans_out = src->retrans_out; - dst->total_retrans = src->total_retrans; - dst->segs_in = src->segs_in; - dst->data_segs_in = src->data_segs_in; - dst->segs_out = src->segs_out; - dst->data_segs_out = src->data_segs_out; - dst->lost_out = src->lost_out; - dst->sacked_out = src->sacked_out; - dst->bytes_received = src->bytes_received; - dst->bytes_acked = src->bytes_acked; -} - -#define RETURN { \ - linum = __LINE__; \ - bpf_map_update_elem(&linum_map, &linum_idx, &linum, 0); \ - return 1; \ -} - -SEC("cgroup_skb/egress") -int egress_read_sock_fields(struct __sk_buff *skb) -{ - struct bpf_spinlock_cnt cli_cnt_init = { .lock = 0, .cnt = 0xeB9F }; - __u32 srv_idx = ADDR_SRV_IDX, cli_idx = ADDR_CLI_IDX, result_idx; - struct bpf_spinlock_cnt *pkt_out_cnt, *pkt_out_cnt10; - struct sockaddr_in6 *srv_sa6, *cli_sa6; - struct bpf_tcp_sock *tp, *tp_ret; - struct bpf_sock *sk, *sk_ret; - __u32 linum, linum_idx; - - linum_idx = EGRESS_LINUM_IDX; - - sk = skb->sk; - if (!sk || sk->state == 10) - RETURN; - - sk = bpf_sk_fullsock(sk); - if (!sk || sk->family != AF_INET6 || sk->protocol != IPPROTO_TCP || - !is_loopback6(sk->src_ip6)) - RETURN; - - tp = bpf_tcp_sock(sk); - if (!tp) - RETURN; - - srv_sa6 = bpf_map_lookup_elem(&addr_map, &srv_idx); - cli_sa6 = bpf_map_lookup_elem(&addr_map, &cli_idx); - if (!srv_sa6 || !cli_sa6) - RETURN; - - if (sk->src_port == bpf_ntohs(srv_sa6->sin6_port)) - result_idx = EGRESS_SRV_IDX; - else if (sk->src_port == bpf_ntohs(cli_sa6->sin6_port)) - result_idx = EGRESS_CLI_IDX; - else - RETURN; - - sk_ret = bpf_map_lookup_elem(&sock_result_map, &result_idx); - tp_ret = bpf_map_lookup_elem(&tcp_sock_result_map, &result_idx); - if (!sk_ret || !tp_ret) - RETURN; - - skcpy(sk_ret, sk); - tpcpy(tp_ret, tp); - - if (result_idx == EGRESS_SRV_IDX) { - /* The userspace has created it for srv sk */ - pkt_out_cnt = bpf_sk_storage_get(&sk_pkt_out_cnt, sk, 0, 0); - pkt_out_cnt10 = bpf_sk_storage_get(&sk_pkt_out_cnt10, sk, - 0, 0); - } else { - pkt_out_cnt = bpf_sk_storage_get(&sk_pkt_out_cnt, sk, - &cli_cnt_init, - BPF_SK_STORAGE_GET_F_CREATE); - pkt_out_cnt10 = bpf_sk_storage_get(&sk_pkt_out_cnt10, - sk, &cli_cnt_init, - BPF_SK_STORAGE_GET_F_CREATE); - } - - if (!pkt_out_cnt || !pkt_out_cnt10) - RETURN; - - /* Even both cnt and cnt10 have lock defined in their BTF, - * intentionally one cnt takes lock while one does not - * as a test for the spinlock support in BPF_MAP_TYPE_SK_STORAGE. - */ - pkt_out_cnt->cnt += 1; - bpf_spin_lock(&pkt_out_cnt10->lock); - pkt_out_cnt10->cnt += 10; - bpf_spin_unlock(&pkt_out_cnt10->lock); - - RETURN; -} - -SEC("cgroup_skb/ingress") -int ingress_read_sock_fields(struct __sk_buff *skb) -{ - __u32 srv_idx = ADDR_SRV_IDX, result_idx = INGRESS_LISTEN_IDX; - struct bpf_tcp_sock *tp, *tp_ret; - struct bpf_sock *sk, *sk_ret; - struct sockaddr_in6 *srv_sa6; - __u32 linum, linum_idx; - - linum_idx = INGRESS_LINUM_IDX; - - sk = skb->sk; - if (!sk || sk->family != AF_INET6 || !is_loopback6(sk->src_ip6)) - RETURN; - - srv_sa6 = bpf_map_lookup_elem(&addr_map, &srv_idx); - if (!srv_sa6 || sk->src_port != bpf_ntohs(srv_sa6->sin6_port)) - RETURN; - - if (sk->state != 10 && sk->state != 12) - RETURN; - - sk = bpf_get_listener_sock(sk); - if (!sk) - RETURN; - - tp = bpf_tcp_sock(sk); - if (!tp) - RETURN; - - sk_ret = bpf_map_lookup_elem(&sock_result_map, &result_idx); - tp_ret = bpf_map_lookup_elem(&tcp_sock_result_map, &result_idx); - if (!sk_ret || !tp_ret) - RETURN; - - skcpy(sk_ret, sk); - tpcpy(tp_ret, tp); - - RETURN; -} - -char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/test_sock_fields.c b/tools/testing/selftests/bpf/test_sock_fields.c deleted file mode 100644 index 6c9f269c396d..000000000000 --- a/tools/testing/selftests/bpf/test_sock_fields.c +++ /dev/null @@ -1,482 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* Copyright (c) 2019 Facebook */ - -#include -#include -#include -#include -#include -#include -#include -#include - -#include -#include - -#include "cgroup_helpers.h" -#include "bpf_rlimit.h" - -enum bpf_addr_array_idx { - ADDR_SRV_IDX, - ADDR_CLI_IDX, - __NR_BPF_ADDR_ARRAY_IDX, -}; - -enum bpf_result_array_idx { - EGRESS_SRV_IDX, - EGRESS_CLI_IDX, - INGRESS_LISTEN_IDX, - __NR_BPF_RESULT_ARRAY_IDX, -}; - -enum bpf_linum_array_idx { - EGRESS_LINUM_IDX, - INGRESS_LINUM_IDX, - __NR_BPF_LINUM_ARRAY_IDX, -}; - -struct bpf_spinlock_cnt { - struct bpf_spin_lock lock; - __u32 cnt; -}; - -#define CHECK(condition, tag, format...) ({ \ - int __ret = !!(condition); \ - if (__ret) { \ - printf("%s(%d):FAIL:%s ", __func__, __LINE__, tag); \ - printf(format); \ - printf("\n"); \ - exit(-1); \ - } \ -}) - -#define TEST_CGROUP "/test-bpf-sock-fields" -#define DATA "Hello BPF!" -#define DATA_LEN sizeof(DATA) - -static struct sockaddr_in6 srv_sa6, cli_sa6; -static int sk_pkt_out_cnt10_fd; -static int sk_pkt_out_cnt_fd; -static int linum_map_fd; -static int addr_map_fd; -static int tp_map_fd; -static int sk_map_fd; - -static __u32 addr_srv_idx = ADDR_SRV_IDX; -static __u32 addr_cli_idx = ADDR_CLI_IDX; - -static __u32 egress_srv_idx = EGRESS_SRV_IDX; -static __u32 egress_cli_idx = EGRESS_CLI_IDX; -static __u32 ingress_listen_idx = INGRESS_LISTEN_IDX; - -static __u32 egress_linum_idx = EGRESS_LINUM_IDX; -static __u32 ingress_linum_idx = INGRESS_LINUM_IDX; - -static void init_loopback6(struct sockaddr_in6 *sa6) -{ - memset(sa6, 0, sizeof(*sa6)); - sa6->sin6_family = AF_INET6; - sa6->sin6_addr = in6addr_loopback; -} - -static void print_sk(const struct bpf_sock *sk) -{ - char src_ip4[24], dst_ip4[24]; - char src_ip6[64], dst_ip6[64]; - - inet_ntop(AF_INET, &sk->src_ip4, src_ip4, sizeof(src_ip4)); - inet_ntop(AF_INET6, &sk->src_ip6, src_ip6, sizeof(src_ip6)); - inet_ntop(AF_INET, &sk->dst_ip4, dst_ip4, sizeof(dst_ip4)); - inet_ntop(AF_INET6, &sk->dst_ip6, dst_ip6, sizeof(dst_ip6)); - - printf("state:%u bound_dev_if:%u family:%u type:%u protocol:%u mark:%u priority:%u " - "src_ip4:%x(%s) src_ip6:%x:%x:%x:%x(%s) src_port:%u " - "dst_ip4:%x(%s) dst_ip6:%x:%x:%x:%x(%s) dst_port:%u\n", - sk->state, sk->bound_dev_if, sk->family, sk->type, sk->protocol, - sk->mark, sk->priority, - sk->src_ip4, src_ip4, - sk->src_ip6[0], sk->src_ip6[1], sk->src_ip6[2], sk->src_ip6[3], - src_ip6, sk->src_port, - sk->dst_ip4, dst_ip4, - sk->dst_ip6[0], sk->dst_ip6[1], sk->dst_ip6[2], sk->dst_ip6[3], - dst_ip6, ntohs(sk->dst_port)); -} - -static void print_tp(const struct bpf_tcp_sock *tp) -{ - printf("snd_cwnd:%u srtt_us:%u rtt_min:%u snd_ssthresh:%u rcv_nxt:%u " - "snd_nxt:%u snd:una:%u mss_cache:%u ecn_flags:%u " - "rate_delivered:%u rate_interval_us:%u packets_out:%u " - "retrans_out:%u total_retrans:%u segs_in:%u data_segs_in:%u " - "segs_out:%u data_segs_out:%u lost_out:%u sacked_out:%u " - "bytes_received:%llu bytes_acked:%llu\n", - tp->snd_cwnd, tp->srtt_us, tp->rtt_min, tp->snd_ssthresh, - tp->rcv_nxt, tp->snd_nxt, tp->snd_una, tp->mss_cache, - tp->ecn_flags, tp->rate_delivered, tp->rate_interval_us, - tp->packets_out, tp->retrans_out, tp->total_retrans, - tp->segs_in, tp->data_segs_in, tp->segs_out, - tp->data_segs_out, tp->lost_out, tp->sacked_out, - tp->bytes_received, tp->bytes_acked); -} - -static void check_result(void) -{ - struct bpf_tcp_sock srv_tp, cli_tp, listen_tp; - struct bpf_sock srv_sk, cli_sk, listen_sk; - __u32 ingress_linum, egress_linum; - int err; - - err = bpf_map_lookup_elem(linum_map_fd, &egress_linum_idx, - &egress_linum); - CHECK(err == -1, "bpf_map_lookup_elem(linum_map_fd)", - "err:%d errno:%d", err, errno); - - err = bpf_map_lookup_elem(linum_map_fd, &ingress_linum_idx, - &ingress_linum); - CHECK(err == -1, "bpf_map_lookup_elem(linum_map_fd)", - "err:%d errno:%d", err, errno); - - err = bpf_map_lookup_elem(sk_map_fd, &egress_srv_idx, &srv_sk); - CHECK(err == -1, "bpf_map_lookup_elem(sk_map_fd, &egress_srv_idx)", - "err:%d errno:%d", err, errno); - err = bpf_map_lookup_elem(tp_map_fd, &egress_srv_idx, &srv_tp); - CHECK(err == -1, "bpf_map_lookup_elem(tp_map_fd, &egress_srv_idx)", - "err:%d errno:%d", err, errno); - - err = bpf_map_lookup_elem(sk_map_fd, &egress_cli_idx, &cli_sk); - CHECK(err == -1, "bpf_map_lookup_elem(sk_map_fd, &egress_cli_idx)", - "err:%d errno:%d", err, errno); - err = bpf_map_lookup_elem(tp_map_fd, &egress_cli_idx, &cli_tp); - CHECK(err == -1, "bpf_map_lookup_elem(tp_map_fd, &egress_cli_idx)", - "err:%d errno:%d", err, errno); - - err = bpf_map_lookup_elem(sk_map_fd, &ingress_listen_idx, &listen_sk); - CHECK(err == -1, "bpf_map_lookup_elem(sk_map_fd, &ingress_listen_idx)", - "err:%d errno:%d", err, errno); - err = bpf_map_lookup_elem(tp_map_fd, &ingress_listen_idx, &listen_tp); - CHECK(err == -1, "bpf_map_lookup_elem(tp_map_fd, &ingress_listen_idx)", - "err:%d errno:%d", err, errno); - - printf("listen_sk: "); - print_sk(&listen_sk); - printf("\n"); - - printf("srv_sk: "); - print_sk(&srv_sk); - printf("\n"); - - printf("cli_sk: "); - print_sk(&cli_sk); - printf("\n"); - - printf("listen_tp: "); - print_tp(&listen_tp); - printf("\n"); - - printf("srv_tp: "); - print_tp(&srv_tp); - printf("\n"); - - printf("cli_tp: "); - print_tp(&cli_tp); - printf("\n"); - - CHECK(listen_sk.state != 10 || - listen_sk.family != AF_INET6 || - listen_sk.protocol != IPPROTO_TCP || - memcmp(listen_sk.src_ip6, &in6addr_loopback, - sizeof(listen_sk.src_ip6)) || - listen_sk.dst_ip6[0] || listen_sk.dst_ip6[1] || - listen_sk.dst_ip6[2] || listen_sk.dst_ip6[3] || - listen_sk.src_port != ntohs(srv_sa6.sin6_port) || - listen_sk.dst_port, - "Unexpected listen_sk", - "Check listen_sk output. ingress_linum:%u", - ingress_linum); - - CHECK(srv_sk.state == 10 || - !srv_sk.state || - srv_sk.family != AF_INET6 || - srv_sk.protocol != IPPROTO_TCP || - memcmp(srv_sk.src_ip6, &in6addr_loopback, - sizeof(srv_sk.src_ip6)) || - memcmp(srv_sk.dst_ip6, &in6addr_loopback, - sizeof(srv_sk.dst_ip6)) || - srv_sk.src_port != ntohs(srv_sa6.sin6_port) || - srv_sk.dst_port != cli_sa6.sin6_port, - "Unexpected srv_sk", "Check srv_sk output. egress_linum:%u", - egress_linum); - - CHECK(cli_sk.state == 10 || - !cli_sk.state || - cli_sk.family != AF_INET6 || - cli_sk.protocol != IPPROTO_TCP || - memcmp(cli_sk.src_ip6, &in6addr_loopback, - sizeof(cli_sk.src_ip6)) || - memcmp(cli_sk.dst_ip6, &in6addr_loopback, - sizeof(cli_sk.dst_ip6)) || - cli_sk.src_port != ntohs(cli_sa6.sin6_port) || - cli_sk.dst_port != srv_sa6.sin6_port, - "Unexpected cli_sk", "Check cli_sk output. egress_linum:%u", - egress_linum); - - CHECK(listen_tp.data_segs_out || - listen_tp.data_segs_in || - listen_tp.total_retrans || - listen_tp.bytes_acked, - "Unexpected listen_tp", "Check listen_tp output. ingress_linum:%u", - ingress_linum); - - CHECK(srv_tp.data_segs_out != 2 || - srv_tp.data_segs_in || - srv_tp.snd_cwnd != 10 || - srv_tp.total_retrans || - srv_tp.bytes_acked != 2 * DATA_LEN, - "Unexpected srv_tp", "Check srv_tp output. egress_linum:%u", - egress_linum); - - CHECK(cli_tp.data_segs_out || - cli_tp.data_segs_in != 2 || - cli_tp.snd_cwnd != 10 || - cli_tp.total_retrans || - cli_tp.bytes_received != 2 * DATA_LEN, - "Unexpected cli_tp", "Check cli_tp output. egress_linum:%u", - egress_linum); -} - -static void check_sk_pkt_out_cnt(int accept_fd, int cli_fd) -{ - struct bpf_spinlock_cnt pkt_out_cnt = {}, pkt_out_cnt10 = {}; - int err; - - pkt_out_cnt.cnt = ~0; - pkt_out_cnt10.cnt = ~0; - err = bpf_map_lookup_elem(sk_pkt_out_cnt_fd, &accept_fd, &pkt_out_cnt); - if (!err) - err = bpf_map_lookup_elem(sk_pkt_out_cnt10_fd, &accept_fd, - &pkt_out_cnt10); - - /* The bpf prog only counts for fullsock and - * passive conneciton did not become fullsock until 3WHS - * had been finished. - * The bpf prog only counted two data packet out but we - * specially init accept_fd's pkt_out_cnt by 2 in - * init_sk_storage(). Hence, 4 here. - */ - CHECK(err || pkt_out_cnt.cnt != 4 || pkt_out_cnt10.cnt != 40, - "bpf_map_lookup_elem(sk_pkt_out_cnt, &accept_fd)", - "err:%d errno:%d pkt_out_cnt:%u pkt_out_cnt10:%u", - err, errno, pkt_out_cnt.cnt, pkt_out_cnt10.cnt); - - pkt_out_cnt.cnt = ~0; - pkt_out_cnt10.cnt = ~0; - err = bpf_map_lookup_elem(sk_pkt_out_cnt_fd, &cli_fd, &pkt_out_cnt); - if (!err) - err = bpf_map_lookup_elem(sk_pkt_out_cnt10_fd, &cli_fd, - &pkt_out_cnt10); - /* Active connection is fullsock from the beginning. - * 1 SYN and 1 ACK during 3WHS - * 2 Acks on data packet. - * - * The bpf_prog initialized it to 0xeB9F. - */ - CHECK(err || pkt_out_cnt.cnt != 0xeB9F + 4 || - pkt_out_cnt10.cnt != 0xeB9F + 40, - "bpf_map_lookup_elem(sk_pkt_out_cnt, &cli_fd)", - "err:%d errno:%d pkt_out_cnt:%u pkt_out_cnt10:%u", - err, errno, pkt_out_cnt.cnt, pkt_out_cnt10.cnt); -} - -static void init_sk_storage(int sk_fd, __u32 pkt_out_cnt) -{ - struct bpf_spinlock_cnt scnt = {}; - int err; - - scnt.cnt = pkt_out_cnt; - err = bpf_map_update_elem(sk_pkt_out_cnt_fd, &sk_fd, &scnt, - BPF_NOEXIST); - CHECK(err, "bpf_map_update_elem(sk_pkt_out_cnt_fd)", - "err:%d errno:%d", err, errno); - - scnt.cnt *= 10; - err = bpf_map_update_elem(sk_pkt_out_cnt10_fd, &sk_fd, &scnt, - BPF_NOEXIST); - CHECK(err, "bpf_map_update_elem(sk_pkt_out_cnt10_fd)", - "err:%d errno:%d", err, errno); -} - -static void test(void) -{ - int listen_fd, cli_fd, accept_fd, epfd, err; - struct epoll_event ev; - socklen_t addrlen; - int i; - - addrlen = sizeof(struct sockaddr_in6); - ev.events = EPOLLIN; - - epfd = epoll_create(1); - CHECK(epfd == -1, "epoll_create()", "epfd:%d errno:%d", epfd, errno); - - /* Prepare listen_fd */ - listen_fd = socket(AF_INET6, SOCK_STREAM | SOCK_NONBLOCK, 0); - CHECK(listen_fd == -1, "socket()", "listen_fd:%d errno:%d", - listen_fd, errno); - - init_loopback6(&srv_sa6); - err = bind(listen_fd, (struct sockaddr *)&srv_sa6, sizeof(srv_sa6)); - CHECK(err, "bind(listen_fd)", "err:%d errno:%d", err, errno); - - err = getsockname(listen_fd, (struct sockaddr *)&srv_sa6, &addrlen); - CHECK(err, "getsockname(listen_fd)", "err:%d errno:%d", err, errno); - - err = listen(listen_fd, 1); - CHECK(err, "listen(listen_fd)", "err:%d errno:%d", err, errno); - - /* Prepare cli_fd */ - cli_fd = socket(AF_INET6, SOCK_STREAM | SOCK_NONBLOCK, 0); - CHECK(cli_fd == -1, "socket()", "cli_fd:%d errno:%d", cli_fd, errno); - - init_loopback6(&cli_sa6); - err = bind(cli_fd, (struct sockaddr *)&cli_sa6, sizeof(cli_sa6)); - CHECK(err, "bind(cli_fd)", "err:%d errno:%d", err, errno); - - err = getsockname(cli_fd, (struct sockaddr *)&cli_sa6, &addrlen); - CHECK(err, "getsockname(cli_fd)", "err:%d errno:%d", - err, errno); - - /* Update addr_map with srv_sa6 and cli_sa6 */ - err = bpf_map_update_elem(addr_map_fd, &addr_srv_idx, &srv_sa6, 0); - CHECK(err, "map_update", "err:%d errno:%d", err, errno); - - err = bpf_map_update_elem(addr_map_fd, &addr_cli_idx, &cli_sa6, 0); - CHECK(err, "map_update", "err:%d errno:%d", err, errno); - - /* Connect from cli_sa6 to srv_sa6 */ - err = connect(cli_fd, (struct sockaddr *)&srv_sa6, addrlen); - printf("srv_sa6.sin6_port:%u cli_sa6.sin6_port:%u\n\n", - ntohs(srv_sa6.sin6_port), ntohs(cli_sa6.sin6_port)); - CHECK(err && errno != EINPROGRESS, - "connect(cli_fd)", "err:%d errno:%d", err, errno); - - ev.data.fd = listen_fd; - err = epoll_ctl(epfd, EPOLL_CTL_ADD, listen_fd, &ev); - CHECK(err, "epoll_ctl(EPOLL_CTL_ADD, listen_fd)", "err:%d errno:%d", - err, errno); - - /* Accept the connection */ - /* Have some timeout in accept(listen_fd). Just in case. */ - err = epoll_wait(epfd, &ev, 1, 1000); - CHECK(err != 1 || ev.data.fd != listen_fd, - "epoll_wait(listen_fd)", - "err:%d errno:%d ev.data.fd:%d listen_fd:%d", - err, errno, ev.data.fd, listen_fd); - - accept_fd = accept(listen_fd, NULL, NULL); - CHECK(accept_fd == -1, "accept(listen_fd)", "accept_fd:%d errno:%d", - accept_fd, errno); - close(listen_fd); - - ev.data.fd = cli_fd; - err = epoll_ctl(epfd, EPOLL_CTL_ADD, cli_fd, &ev); - CHECK(err, "epoll_ctl(EPOLL_CTL_ADD, cli_fd)", "err:%d errno:%d", - err, errno); - - init_sk_storage(accept_fd, 2); - - for (i = 0; i < 2; i++) { - /* Send some data from accept_fd to cli_fd */ - err = send(accept_fd, DATA, DATA_LEN, 0); - CHECK(err != DATA_LEN, "send(accept_fd)", "err:%d errno:%d", - err, errno); - - /* Have some timeout in recv(cli_fd). Just in case. */ - err = epoll_wait(epfd, &ev, 1, 1000); - CHECK(err != 1 || ev.data.fd != cli_fd, - "epoll_wait(cli_fd)", "err:%d errno:%d ev.data.fd:%d cli_fd:%d", - err, errno, ev.data.fd, cli_fd); - - err = recv(cli_fd, NULL, 0, MSG_TRUNC); - CHECK(err, "recv(cli_fd)", "err:%d errno:%d", err, errno); - } - - check_sk_pkt_out_cnt(accept_fd, cli_fd); - - close(epfd); - close(accept_fd); - close(cli_fd); - - check_result(); -} - -int main(int argc, char **argv) -{ - struct bpf_prog_load_attr attr = { - .file = "test_sock_fields_kern.o", - .prog_type = BPF_PROG_TYPE_CGROUP_SKB, - .prog_flags = BPF_F_TEST_RND_HI32, - }; - int cgroup_fd, egress_fd, ingress_fd, err; - struct bpf_program *ingress_prog; - struct bpf_object *obj; - struct bpf_map *map; - - /* Create a cgroup, get fd, and join it */ - cgroup_fd = cgroup_setup_and_join(TEST_CGROUP); - CHECK(cgroup_fd < 0, "cgroup_setup_and_join()", - "cgroup_fd:%d errno:%d", cgroup_fd, errno); - atexit(cleanup_cgroup_environment); - - err = bpf_prog_load_xattr(&attr, &obj, &egress_fd); - CHECK(err, "bpf_prog_load_xattr()", "err:%d", err); - - ingress_prog = bpf_object__find_program_by_title(obj, - "cgroup_skb/ingress"); - CHECK(!ingress_prog, - "bpf_object__find_program_by_title(cgroup_skb/ingress)", - "not found"); - ingress_fd = bpf_program__fd(ingress_prog); - - err = bpf_prog_attach(egress_fd, cgroup_fd, BPF_CGROUP_INET_EGRESS, 0); - CHECK(err == -1, "bpf_prog_attach(CPF_CGROUP_INET_EGRESS)", - "err:%d errno%d", err, errno); - - err = bpf_prog_attach(ingress_fd, cgroup_fd, - BPF_CGROUP_INET_INGRESS, 0); - CHECK(err == -1, "bpf_prog_attach(CPF_CGROUP_INET_INGRESS)", - "err:%d errno%d", err, errno); - close(cgroup_fd); - - map = bpf_object__find_map_by_name(obj, "addr_map"); - CHECK(!map, "cannot find addr_map", "(null)"); - addr_map_fd = bpf_map__fd(map); - - map = bpf_object__find_map_by_name(obj, "sock_result_map"); - CHECK(!map, "cannot find sock_result_map", "(null)"); - sk_map_fd = bpf_map__fd(map); - - map = bpf_object__find_map_by_name(obj, "tcp_sock_result_map"); - CHECK(!map, "cannot find tcp_sock_result_map", "(null)"); - tp_map_fd = bpf_map__fd(map); - - map = bpf_object__find_map_by_name(obj, "linum_map"); - CHECK(!map, "cannot find linum_map", "(null)"); - linum_map_fd = bpf_map__fd(map); - - map = bpf_object__find_map_by_name(obj, "sk_pkt_out_cnt"); - CHECK(!map, "cannot find sk_pkt_out_cnt", "(null)"); - sk_pkt_out_cnt_fd = bpf_map__fd(map); - - map = bpf_object__find_map_by_name(obj, "sk_pkt_out_cnt10"); - CHECK(!map, "cannot find sk_pkt_out_cnt10", "(null)"); - sk_pkt_out_cnt10_fd = bpf_map__fd(map); - - test(); - - bpf_object__close(obj); - cleanup_cgroup_environment(); - - printf("PASS\n"); - - return 0; -}