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author | John Fastabend <john.fastabend@gmail.com> | 2017-08-28 07:11:05 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2017-08-28 11:13:21 -0700 |
commit | 6fd28865c2a7e5ea12cb1f7ef3edee5a2042905e (patch) | |
tree | 94e1075e7705c812987453b5eb6b9ad230f20ffb /tools/testing/selftests/bpf | |
parent | d26e597d87635d90128fafb3f6bb0a14d972d952 (diff) | |
download | blackbird-op-linux-6fd28865c2a7e5ea12cb1f7ef3edee5a2042905e.tar.gz blackbird-op-linux-6fd28865c2a7e5ea12cb1f7ef3edee5a2042905e.zip |
bpf: additional sockmap self tests
Add some more sockmap tests to cover,
- forwarding to NULL entries
- more than two maps to test list ops
- forwarding to different map
Signed-off-by: John Fastabend <john.fastabend@gmail.com>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/testing/selftests/bpf')
-rw-r--r-- | tools/testing/selftests/bpf/sockmap_parse_prog.c | 6 | ||||
-rw-r--r-- | tools/testing/selftests/bpf/sockmap_verdict_prog.c | 23 | ||||
-rw-r--r-- | tools/testing/selftests/bpf/test_maps.c | 113 |
3 files changed, 96 insertions, 46 deletions
diff --git a/tools/testing/selftests/bpf/sockmap_parse_prog.c b/tools/testing/selftests/bpf/sockmap_parse_prog.c index 710f43f42dc4..fae3b96c3aa4 100644 --- a/tools/testing/selftests/bpf/sockmap_parse_prog.c +++ b/tools/testing/selftests/bpf/sockmap_parse_prog.c @@ -19,16 +19,16 @@ int bpf_prog1(struct __sk_buff *skb) void *data = (void *)(long) skb->data; __u32 lport = skb->local_port; __u32 rport = skb->remote_port; - char *d = data; + __u8 *d = data; - if (data + 8 > data_end) + if (data + 10 > data_end) return skb->len; /* This write/read is a bit pointless but tests the verifier and * strparser handler for read/write pkt data and access into sk * fields. */ - d[0] = 1; + d[7] = 1; bpf_printk("parse: data[0] = (%u): local_port %i remote %i\n", d[0], lport, bpf_ntohl(rport)); diff --git a/tools/testing/selftests/bpf/sockmap_verdict_prog.c b/tools/testing/selftests/bpf/sockmap_verdict_prog.c index 0573c1db2519..dada2072dec5 100644 --- a/tools/testing/selftests/bpf/sockmap_verdict_prog.c +++ b/tools/testing/selftests/bpf/sockmap_verdict_prog.c @@ -12,7 +12,14 @@ int _version SEC("version") = 1; ##__VA_ARGS__); \ }) -struct bpf_map_def SEC("maps") sock_map = { +struct bpf_map_def SEC("maps") sock_map_rx = { + .type = BPF_MAP_TYPE_SOCKMAP, + .key_size = sizeof(int), + .value_size = sizeof(int), + .max_entries = 20, +}; + +struct bpf_map_def SEC("maps") sock_map_tx = { .type = BPF_MAP_TYPE_SOCKMAP, .key_size = sizeof(int), .value_size = sizeof(int), @@ -26,11 +33,15 @@ int bpf_prog2(struct __sk_buff *skb) void *data = (void *)(long) skb->data; __u32 lport = skb->local_port; __u32 rport = skb->remote_port; - char *d = data; + __u8 *d = data; + __u8 sk, map; if (data + 8 > data_end) return SK_DROP; + map = d[0]; + sk = d[1]; + d[0] = 0xd; d[1] = 0xe; d[2] = 0xa; @@ -40,9 +51,11 @@ int bpf_prog2(struct __sk_buff *skb) d[6] = 0xe; d[7] = 0xf; - bpf_printk("verdict: data[0] = (%u): local_port %i remote %i redirect 5\n", - d[0], lport, bpf_ntohl(rport)); - return bpf_sk_redirect_map(&sock_map, 5, 0); + bpf_printk("verdict: data[0] = redir(%u:%u)\n", map, sk); + + if (!map) + return bpf_sk_redirect_map(&sock_map_rx, sk, 0); + return bpf_sk_redirect_map(&sock_map_tx, sk, 0); } char _license[] SEC("license") = "GPL"; diff --git a/tools/testing/selftests/bpf/test_maps.c b/tools/testing/selftests/bpf/test_maps.c index 6df6e6257424..0a7f45729f3e 100644 --- a/tools/testing/selftests/bpf/test_maps.c +++ b/tools/testing/selftests/bpf/test_maps.c @@ -465,10 +465,10 @@ static void test_sockmap(int task, void *data) { int ports[] = {50200, 50201, 50202, 50204}; int err, i, fd, sfd[6] = {0xdeadbeef}; - char buf[] = "hello sockmap user\n"; - int one = 1, map_fd, s, sc, rc; + u8 buf[20] = {0x0, 0x5, 0x3, 0x2, 0x1, 0x0}; + int one = 1, map_fd_rx, map_fd_tx, s, sc, rc; int parse_prog, verdict_prog; - struct bpf_map *bpf_map; + struct bpf_map *bpf_map_rx, *bpf_map_tx; struct sockaddr_in addr; struct bpf_object *obj; struct timeval to; @@ -585,26 +585,38 @@ static void test_sockmap(int task, void *data) goto out_sockmap; } - bpf_map = bpf_object__find_map_by_name(obj, "sock_map"); - if (IS_ERR(bpf_map)) { - printf("Failed to load map from verdict prog\n"); + bpf_map_rx = bpf_object__find_map_by_name(obj, "sock_map_rx"); + if (IS_ERR(bpf_map_rx)) { + printf("Failed to load map rx from verdict prog\n"); goto out_sockmap; } - map_fd = bpf_map__fd(bpf_map); - if (map_fd < 0) { + map_fd_rx = bpf_map__fd(bpf_map_rx); + if (map_fd_rx < 0) { printf("Failed to get map fd\n"); goto out_sockmap; } - err = bpf_prog_attach(parse_prog, map_fd, + bpf_map_tx = bpf_object__find_map_by_name(obj, "sock_map_tx"); + if (IS_ERR(bpf_map_tx)) { + printf("Failed to load map tx from verdict prog\n"); + goto out_sockmap; + } + + map_fd_tx = bpf_map__fd(bpf_map_tx); + if (map_fd_tx < 0) { + printf("Failed to get map tx fd\n"); + goto out_sockmap; + } + + err = bpf_prog_attach(parse_prog, map_fd_rx, BPF_SK_SKB_STREAM_PARSER, 0); if (err) { printf("Failed bpf prog attach\n"); goto out_sockmap; } - err = bpf_prog_attach(verdict_prog, map_fd, + err = bpf_prog_attach(verdict_prog, map_fd_rx, BPF_SK_SKB_STREAM_VERDICT, 0); if (err) { printf("Failed bpf prog attach\n"); @@ -613,9 +625,15 @@ static void test_sockmap(int task, void *data) /* Test map update elem afterwards fd lives in fd and map_fd */ for (i = 0; i < 6; i++) { - err = bpf_map_update_elem(map_fd, &i, &sfd[i], BPF_ANY); + err = bpf_map_update_elem(map_fd_rx, &i, &sfd[i], BPF_ANY); + if (err) { + printf("Failed map_fd_rx update sockmap %i '%i:%i'\n", + err, i, sfd[i]); + goto out_sockmap; + } + err = bpf_map_update_elem(map_fd_tx, &i, &sfd[i], BPF_ANY); if (err) { - printf("Failed map_fd update sockmap %i '%i:%i'\n", + printf("Failed map_fd_tx update sockmap %i '%i:%i'\n", err, i, sfd[i]); goto out_sockmap; } @@ -623,42 +641,61 @@ static void test_sockmap(int task, void *data) /* Test map delete elem and remove send/recv sockets */ for (i = 2; i < 4; i++) { - err = bpf_map_delete_elem(map_fd, &i); + err = bpf_map_delete_elem(map_fd_rx, &i); + if (err) { + printf("Failed delete sockmap rx %i '%i:%i'\n", + err, i, sfd[i]); + goto out_sockmap; + } + err = bpf_map_delete_elem(map_fd_tx, &i); if (err) { - printf("Failed delete sockmap %i '%i:%i'\n", + printf("Failed delete sockmap tx %i '%i:%i'\n", err, i, sfd[i]); goto out_sockmap; } } /* Test map send/recv */ - sc = send(sfd[2], buf, 10, 0); - if (sc < 0) { - printf("Failed sockmap send\n"); - goto out_sockmap; - } + for (i = 0; i < 2; i++) { + buf[0] = i; + buf[1] = 0x5; + sc = send(sfd[2], buf, 20, 0); + if (sc < 0) { + printf("Failed sockmap send\n"); + goto out_sockmap; + } - FD_ZERO(&w); - FD_SET(sfd[3], &w); - to.tv_sec = 1; - to.tv_usec = 0; - s = select(sfd[3] + 1, &w, NULL, NULL, &to); - if (s == -1) { - perror("Failed sockmap select()"); - goto out_sockmap; - } else if (!s) { - printf("Failed sockmap unexpected timeout\n"); - goto out_sockmap; - } + FD_ZERO(&w); + FD_SET(sfd[3], &w); + to.tv_sec = 1; + to.tv_usec = 0; + s = select(sfd[3] + 1, &w, NULL, NULL, &to); + if (s == -1) { + perror("Failed sockmap select()"); + goto out_sockmap; + } else if (!s) { + printf("Failed sockmap unexpected timeout\n"); + goto out_sockmap; + } - if (!FD_ISSET(sfd[3], &w)) { - printf("Failed sockmap select/recv\n"); - goto out_sockmap; + if (!FD_ISSET(sfd[3], &w)) { + printf("Failed sockmap select/recv\n"); + goto out_sockmap; + } + + rc = recv(sfd[3], buf, sizeof(buf), 0); + if (rc < 0) { + printf("Failed sockmap recv\n"); + goto out_sockmap; + } } - rc = recv(sfd[3], buf, sizeof(buf), 0); - if (rc < 0) { - printf("Failed sockmap recv\n"); + /* Negative null entry lookup from datapath should be dropped */ + buf[0] = 1; + buf[1] = 12; + sc = send(sfd[2], buf, 20, 0); + if (sc < 0) { + printf("Failed sockmap send\n"); goto out_sockmap; } @@ -730,7 +767,7 @@ static void test_sockmap(int task, void *data) for (i = 0; i < 6; i++) close(sfd[i]); close(fd); - close(map_fd); + close(map_fd_rx); bpf_object__close(obj); return; out: |