Re: [PATCH v1 bpf-next 11/11] bpf: Test BPF_SK_REUSEPORT_SELECT_OR_MIGRATE.
I'm sending this mail just for logging because I failed to send mails only to LKML, netdev, and bpf yesterday. From: Martin KaFai Lau Date: Fri, 4 Dec 2020 17:50:00 -0800 > On Tue, Dec 01, 2020 at 11:44:18PM +0900, Kuniyuki Iwashima wrote: > > This patch adds a test for BPF_SK_REUSEPORT_SELECT_OR_MIGRATE. > > > > Reviewed-by: Benjamin Herrenschmidt > > Signed-off-by: Kuniyuki Iwashima > > --- > > .../bpf/prog_tests/migrate_reuseport.c| 164 ++ > > .../bpf/progs/test_migrate_reuseport_kern.c | 54 ++ > > 2 files changed, 218 insertions(+) > > create mode 100644 > > tools/testing/selftests/bpf/prog_tests/migrate_reuseport.c > > create mode 100644 > > tools/testing/selftests/bpf/progs/test_migrate_reuseport_kern.c > > > > diff --git a/tools/testing/selftests/bpf/prog_tests/migrate_reuseport.c > > b/tools/testing/selftests/bpf/prog_tests/migrate_reuseport.c > > new file mode 100644 > > index ..87c72d9ccadd > > --- /dev/null > > +++ b/tools/testing/selftests/bpf/prog_tests/migrate_reuseport.c > > @@ -0,0 +1,164 @@ > > +// SPDX-License-Identifier: GPL-2.0 > > +/* > > + * Check if we can migrate child sockets. > > + * > > + * 1. call listen() for 5 server sockets. > > + * 2. update a map to migrate all child socket > > + *to the last server socket (migrate_map[cookie] = 4) > > + * 3. call connect() for 25 client sockets. > > + * 4. call close() for first 4 server sockets. > > + * 5. call accept() for the last server socket. > > + * > > + * Author: Kuniyuki Iwashima > > + */ > > + > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > +#include > > + > > +#define NUM_SOCKS 5 > > +#define LOCALHOST "127.0.0.1" > > +#define err_exit(condition, message) \ > > + do { \ > > + if (condition) { \ > > + perror("ERROR: " message " ");\ > > + exit(1); \ > > + } \ > > + } while (0) > > + > > +__u64 server_fds[NUM_SOCKS]; > > +int prog_fd, reuseport_map_fd, migrate_map_fd; > > + > > + > > +void setup_bpf(void) > > +{ > > + struct bpf_object *obj; > > + struct bpf_program *prog; > > + struct bpf_map *reuseport_map, *migrate_map; > > + int err; > > + > > + obj = bpf_object__open("test_migrate_reuseport_kern.o"); > > + err_exit(libbpf_get_error(obj), "opening BPF object file failed"); > > + > > + err = bpf_object__load(obj); > > + err_exit(err, "loading BPF object failed"); > > + > > + prog = bpf_program__next(NULL, obj); > > + err_exit(!prog, "loading BPF program failed"); > > + > > + reuseport_map = bpf_object__find_map_by_name(obj, "reuseport_map"); > > + err_exit(!reuseport_map, "loading BPF reuseport_map failed"); > > + > > + migrate_map = bpf_object__find_map_by_name(obj, "migrate_map"); > > + err_exit(!migrate_map, "loading BPF migrate_map failed"); > > + > > + prog_fd = bpf_program__fd(prog); > > + reuseport_map_fd = bpf_map__fd(reuseport_map); > > + migrate_map_fd = bpf_map__fd(migrate_map); > > +} > > + > > +void test_listen(void) > > +{ > > + struct sockaddr_in addr; > > + socklen_t addr_len = sizeof(addr); > > + int i, err, optval = 1, migrated_to = NUM_SOCKS - 1; > > + __u64 value; > > + > > + addr.sin_family = AF_INET; > > + addr.sin_port = htons(80); > > + inet_pton(AF_INET, LOCALHOST, _addr.s_addr); > > + > > + for (i = 0; i < NUM_SOCKS; i++) { > > + server_fds[i] = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); > > + err_exit(server_fds[i] == -1, "socket() for listener sockets > > failed"); > > + > > + err = setsockopt(server_fds[i], SOL_SOCKET, SO_REUSEPORT, > > +, sizeof(optval)); > > + err_exit(err == -1, "setsockopt() for SO_REUSEPORT failed"); > > + > > + if (i == 0) { > > + err = setsockopt(server_fds[i], SOL_SOCKET, > > SO_ATTACH_REUSEPORT_EBPF, > > +_fd, sizeof(prog_fd)); > > + err_exit(err == -1, "setsockopt() for > > SO_ATTACH_REUSEPORT_EBPF failed"); > > + } > > + > > + err = bind(server_fds[i], (struct sockaddr *), addr_len); > > + err_exit(err == -1, "bind() failed"); > > + > > + err = listen(server_fds[i], 32); > > + err_exit(err == -1, "listen() failed"); > > + > > + err = bpf_map_update_elem(reuseport_map_fd, , _fds[i], > > BPF_NOEXIST); > > + err_exit(err == -1, "updating BPF reuseport_map failed"); > > + > > + err = bpf_map_lookup_elem(reuseport_map_fd, , ); > > + err_exit(err == -1, "looking up BPF reuseport_map failed"); > > + > > + printf("fd[%d] (cookie: %llu) -> fd[%d]\n", i, value, > >
Re: [PATCH v1 bpf-next 11/11] bpf: Test BPF_SK_REUSEPORT_SELECT_OR_MIGRATE.
On Tue, Dec 01, 2020 at 11:44:18PM +0900, Kuniyuki Iwashima wrote: > This patch adds a test for BPF_SK_REUSEPORT_SELECT_OR_MIGRATE. > > Reviewed-by: Benjamin Herrenschmidt > Signed-off-by: Kuniyuki Iwashima > --- > .../bpf/prog_tests/migrate_reuseport.c| 164 ++ > .../bpf/progs/test_migrate_reuseport_kern.c | 54 ++ > 2 files changed, 218 insertions(+) > create mode 100644 tools/testing/selftests/bpf/prog_tests/migrate_reuseport.c > create mode 100644 > tools/testing/selftests/bpf/progs/test_migrate_reuseport_kern.c > > diff --git a/tools/testing/selftests/bpf/prog_tests/migrate_reuseport.c > b/tools/testing/selftests/bpf/prog_tests/migrate_reuseport.c > new file mode 100644 > index ..87c72d9ccadd > --- /dev/null > +++ b/tools/testing/selftests/bpf/prog_tests/migrate_reuseport.c > @@ -0,0 +1,164 @@ > +// SPDX-License-Identifier: GPL-2.0 > +/* > + * Check if we can migrate child sockets. > + * > + * 1. call listen() for 5 server sockets. > + * 2. update a map to migrate all child socket > + *to the last server socket (migrate_map[cookie] = 4) > + * 3. call connect() for 25 client sockets. > + * 4. call close() for first 4 server sockets. > + * 5. call accept() for the last server socket. > + * > + * Author: Kuniyuki Iwashima > + */ > + > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > +#include > + > +#define NUM_SOCKS 5 > +#define LOCALHOST "127.0.0.1" > +#define err_exit(condition, message) \ > + do { \ > + if (condition) { \ > + perror("ERROR: " message " ");\ > + exit(1); \ > + } \ > + } while (0) > + > +__u64 server_fds[NUM_SOCKS]; > +int prog_fd, reuseport_map_fd, migrate_map_fd; > + > + > +void setup_bpf(void) > +{ > + struct bpf_object *obj; > + struct bpf_program *prog; > + struct bpf_map *reuseport_map, *migrate_map; > + int err; > + > + obj = bpf_object__open("test_migrate_reuseport_kern.o"); > + err_exit(libbpf_get_error(obj), "opening BPF object file failed"); > + > + err = bpf_object__load(obj); > + err_exit(err, "loading BPF object failed"); > + > + prog = bpf_program__next(NULL, obj); > + err_exit(!prog, "loading BPF program failed"); > + > + reuseport_map = bpf_object__find_map_by_name(obj, "reuseport_map"); > + err_exit(!reuseport_map, "loading BPF reuseport_map failed"); > + > + migrate_map = bpf_object__find_map_by_name(obj, "migrate_map"); > + err_exit(!migrate_map, "loading BPF migrate_map failed"); > + > + prog_fd = bpf_program__fd(prog); > + reuseport_map_fd = bpf_map__fd(reuseport_map); > + migrate_map_fd = bpf_map__fd(migrate_map); > +} > + > +void test_listen(void) > +{ > + struct sockaddr_in addr; > + socklen_t addr_len = sizeof(addr); > + int i, err, optval = 1, migrated_to = NUM_SOCKS - 1; > + __u64 value; > + > + addr.sin_family = AF_INET; > + addr.sin_port = htons(80); > + inet_pton(AF_INET, LOCALHOST, _addr.s_addr); > + > + for (i = 0; i < NUM_SOCKS; i++) { > + server_fds[i] = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP); > + err_exit(server_fds[i] == -1, "socket() for listener sockets > failed"); > + > + err = setsockopt(server_fds[i], SOL_SOCKET, SO_REUSEPORT, > + , sizeof(optval)); > + err_exit(err == -1, "setsockopt() for SO_REUSEPORT failed"); > + > + if (i == 0) { > + err = setsockopt(server_fds[i], SOL_SOCKET, > SO_ATTACH_REUSEPORT_EBPF, > + _fd, sizeof(prog_fd)); > + err_exit(err == -1, "setsockopt() for > SO_ATTACH_REUSEPORT_EBPF failed"); > + } > + > + err = bind(server_fds[i], (struct sockaddr *), addr_len); > + err_exit(err == -1, "bind() failed"); > + > + err = listen(server_fds[i], 32); > + err_exit(err == -1, "listen() failed"); > + > + err = bpf_map_update_elem(reuseport_map_fd, , _fds[i], > BPF_NOEXIST); > + err_exit(err == -1, "updating BPF reuseport_map failed"); > + > + err = bpf_map_lookup_elem(reuseport_map_fd, , ); > + err_exit(err == -1, "looking up BPF reuseport_map failed"); > + > + printf("fd[%d] (cookie: %llu) -> fd[%d]\n", i, value, > migrated_to); > + err = bpf_map_update_elem(migrate_map_fd, , _to, > BPF_NOEXIST); > + err_exit(err == -1, "updating BPF migrate_map failed"); > + } > +} > + > +void test_connect(void) > +{ > + struct sockaddr_in addr; > + socklen_t addr_len = sizeof(addr); > + int i, err, client_fd; > + > +