diff options
Diffstat (limited to 'tools/testing/selftests/net/psock_fanout.c')
| -rw-r--r-- | tools/testing/selftests/net/psock_fanout.c | 35 |
1 files changed, 28 insertions, 7 deletions
diff --git a/tools/testing/selftests/net/psock_fanout.c b/tools/testing/selftests/net/psock_fanout.c index 989f917..bd9b963 100644 --- a/tools/testing/selftests/net/psock_fanout.c +++ b/tools/testing/selftests/net/psock_fanout.c @@ -50,6 +50,7 @@ #include <linux/filter.h> #include <linux/bpf.h> #include <linux/if_packet.h> +#include <net/if.h> #include <net/ethernet.h> #include <netinet/ip.h> #include <netinet/udp.h> @@ -73,14 +74,29 @@ * @return -1 if mode is bad, a valid socket otherwise */ static int sock_fanout_open(uint16_t typeflags, uint16_t group_id) { + struct sockaddr_ll addr = {0}; int fd, val; - fd = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_IP)); + fd = socket(PF_PACKET, SOCK_RAW, 0); if (fd < 0) { perror("socket packet"); exit(1); } + pair_udp_setfilter(fd); + + addr.sll_family = AF_PACKET; + addr.sll_protocol = htons(ETH_P_IP); + addr.sll_ifindex = if_nametoindex("lo"); + if (addr.sll_ifindex == 0) { + perror("if_nametoindex"); + exit(1); + } + if (bind(fd, (void *) &addr, sizeof(addr))) { + perror("bind packet"); + exit(1); + } + val = (((int) typeflags) << 16) | group_id; if (setsockopt(fd, SOL_PACKET, PACKET_FANOUT, &val, sizeof(val))) { if (close(fd)) { @@ -90,7 +106,6 @@ static int sock_fanout_open(uint16_t typeflags, uint16_t group_id) return -1; } - pair_udp_setfilter(fd); return fd; } @@ -128,6 +143,8 @@ static void sock_fanout_getopts(int fd, uint16_t *typeflags, uint16_t *group_id) static void sock_fanout_set_ebpf(int fd) { + static char log_buf[65536]; + const int len_off = __builtin_offsetof(struct __sk_buff, len); struct bpf_insn prog[] = { { BPF_ALU64 | BPF_MOV | BPF_X, 6, 1, 0, 0 }, @@ -140,7 +157,6 @@ static void sock_fanout_set_ebpf(int fd) { BPF_ALU | BPF_MOV | BPF_K, 0, 0, 0, 0 }, { BPF_JMP | BPF_EXIT, 0, 0, 0, 0 } }; - char log_buf[512]; union bpf_attr attr; int pfd; @@ -228,7 +244,7 @@ static int sock_fanout_read(int fds[], char *rings[], const int expect[]) if ((!(ret[0] == expect[0] && ret[1] == expect[1])) && (!(ret[0] == expect[1] && ret[1] == expect[0]))) { - fprintf(stderr, "ERROR: incorrect queue lengths\n"); + fprintf(stderr, "warning: incorrect queue lengths\n"); return 1; } @@ -347,7 +363,8 @@ static int test_datapath(uint16_t typeflags, int port_off, uint8_t type = typeflags & 0xFF; int fds[2], fds_udp[2][2], ret; - fprintf(stderr, "test: datapath 0x%hx\n", typeflags); + fprintf(stderr, "\ntest: datapath 0x%hx ports %hu,%hu\n", + typeflags, PORT_BASE, PORT_BASE + port_off); fds[0] = sock_fanout_open(typeflags, 0); fds[1] = sock_fanout_open(typeflags, 0); @@ -418,7 +435,7 @@ int main(int argc, char **argv) const int expect_cpu1[2][2] = { { 0, 20 }, { 0, 20 } }; const int expect_bpf[2][2] = { { 15, 5 }, { 15, 20 } }; const int expect_uniqueid[2][2] = { { 20, 20}, { 20, 20 } }; - int port_off = 2, tries = 5, ret; + int port_off = 2, tries = 20, ret; test_control_single(); test_control_group(); @@ -427,10 +444,14 @@ int main(int argc, char **argv) /* find a set of ports that do not collide onto the same socket */ ret = test_datapath(PACKET_FANOUT_HASH, port_off, expect_hash[0], expect_hash[1]); - while (ret && tries--) { + while (ret) { fprintf(stderr, "info: trying alternate ports (%d)\n", tries); ret = test_datapath(PACKET_FANOUT_HASH, ++port_off, expect_hash[0], expect_hash[1]); + if (!--tries) { + fprintf(stderr, "too many collisions\n"); + return 1; + } } ret |= test_datapath(PACKET_FANOUT_HASH | PACKET_FANOUT_FLAG_ROLLOVER, |
