From 23a9544206dd91dfe048fcf67abec3f3104c42b9 Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Tue, 2 Apr 2013 13:00:51 +0000 Subject: selftests: net: add PF_PACKET TPACKET v1/v2/v3 selftests This patch adds a simple test case that probes the packet socket's TPACKET_V1, TPACKET_V2 and TPACKET_V3 behavior regarding mmap(2)'ed I/O for a small burst of 100 packets. The test currently runs for ... TPACKET_V1: RX_RING, TX_RING TPACKET_V2: RX_RING, TX_RING TPACKET_V3: RX_RING ... and will output on success: test: TPACKET_V1 with PACKET_RX_RING .................... 100 pkts (9600 bytes) test: TPACKET_V1 with PACKET_TX_RING .................... 100 pkts (9600 bytes) test: TPACKET_V2 with PACKET_RX_RING .................... 100 pkts (9600 bytes) test: TPACKET_V2 with PACKET_TX_RING .................... 100 pkts (9600 bytes) test: TPACKET_V3 with PACKET_RX_RING .................... 100 pkts (9600 bytes) OK. All tests passed Reusable parts of psock_fanout.c have been put into a psock_lib.h file for common usage. Test case successfully tested on x86_64. Signed-off-by: Daniel Borkmann Signed-off-by: David S. Miller --- tools/testing/selftests/net/psock_fanout.c | 88 +----------------------------- 1 file changed, 3 insertions(+), 85 deletions(-) (limited to 'tools/testing/selftests/net/psock_fanout.c') diff --git a/tools/testing/selftests/net/psock_fanout.c b/tools/testing/selftests/net/psock_fanout.c index 59bd6367af71..57b9c2b7c4ff 100644 --- a/tools/testing/selftests/net/psock_fanout.c +++ b/tools/testing/selftests/net/psock_fanout.c @@ -61,91 +61,9 @@ #include #include -#define DATA_LEN 100 -#define DATA_CHAR 'a' -#define RING_NUM_FRAMES 20 -#define PORT_BASE 8000 - -static void pair_udp_open(int fds[], uint16_t port) -{ - struct sockaddr_in saddr, daddr; - - fds[0] = socket(PF_INET, SOCK_DGRAM, 0); - fds[1] = socket(PF_INET, SOCK_DGRAM, 0); - if (fds[0] == -1 || fds[1] == -1) { - fprintf(stderr, "ERROR: socket dgram\n"); - exit(1); - } - - memset(&saddr, 0, sizeof(saddr)); - saddr.sin_family = AF_INET; - saddr.sin_port = htons(port); - saddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); - - memset(&daddr, 0, sizeof(daddr)); - daddr.sin_family = AF_INET; - daddr.sin_port = htons(port + 1); - daddr.sin_addr.s_addr = htonl(INADDR_LOOPBACK); +#include "psock_lib.h" - /* must bind both to get consistent hash result */ - if (bind(fds[1], (void *) &daddr, sizeof(daddr))) { - perror("bind"); - exit(1); - } - if (bind(fds[0], (void *) &saddr, sizeof(saddr))) { - perror("bind"); - exit(1); - } - if (connect(fds[0], (void *) &daddr, sizeof(daddr))) { - perror("connect"); - exit(1); - } -} - -static void pair_udp_send(int fds[], int num) -{ - char buf[DATA_LEN], rbuf[DATA_LEN]; - - memset(buf, DATA_CHAR, sizeof(buf)); - while (num--) { - /* Should really handle EINTR and EAGAIN */ - if (write(fds[0], buf, sizeof(buf)) != sizeof(buf)) { - fprintf(stderr, "ERROR: send failed left=%d\n", num); - exit(1); - } - if (read(fds[1], rbuf, sizeof(rbuf)) != sizeof(rbuf)) { - fprintf(stderr, "ERROR: recv failed left=%d\n", num); - exit(1); - } - if (memcmp(buf, rbuf, sizeof(buf))) { - fprintf(stderr, "ERROR: data failed left=%d\n", num); - exit(1); - } - } -} - -static void sock_fanout_setfilter(int fd) -{ - struct sock_filter bpf_filter[] = { - { 0x80, 0, 0, 0x00000000 }, /* LD pktlen */ - { 0x35, 0, 5, DATA_LEN }, /* JGE DATA_LEN [f goto nomatch]*/ - { 0x30, 0, 0, 0x00000050 }, /* LD ip[80] */ - { 0x15, 0, 3, DATA_CHAR }, /* JEQ DATA_CHAR [f goto nomatch]*/ - { 0x30, 0, 0, 0x00000051 }, /* LD ip[81] */ - { 0x15, 0, 1, DATA_CHAR }, /* JEQ DATA_CHAR [f goto nomatch]*/ - { 0x6, 0, 0, 0x00000060 }, /* RET match */ -/* nomatch */ { 0x6, 0, 0, 0x00000000 }, /* RET no match */ - }; - struct sock_fprog bpf_prog; - - bpf_prog.filter = bpf_filter; - bpf_prog.len = sizeof(bpf_filter) / sizeof(struct sock_filter); - if (setsockopt(fd, SOL_SOCKET, SO_ATTACH_FILTER, &bpf_prog, - sizeof(bpf_prog))) { - perror("setsockopt SO_ATTACH_FILTER"); - exit(1); - } -} +#define RING_NUM_FRAMES 20 /* Open a socket in a given fanout mode. * @return -1 if mode is bad, a valid socket otherwise */ @@ -169,7 +87,7 @@ static int sock_fanout_open(uint16_t typeflags, int num_packets) return -1; } - sock_fanout_setfilter(fd); + pair_udp_setfilter(fd); return fd; } -- cgit v1.2.3-59-g8ed1b