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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 18:49:45 +0000 |
commit | 2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch) | |
tree | 848558de17fb3008cdf4d861b01ac7781903ce39 /tools/testing/selftests/net/psock_tpacket.c | |
parent | Initial commit. (diff) | |
download | linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip |
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'tools/testing/selftests/net/psock_tpacket.c')
-rw-r--r-- | tools/testing/selftests/net/psock_tpacket.c | 850 |
1 files changed, 850 insertions, 0 deletions
diff --git a/tools/testing/selftests/net/psock_tpacket.c b/tools/testing/selftests/net/psock_tpacket.c new file mode 100644 index 000000000..404a2ce75 --- /dev/null +++ b/tools/testing/selftests/net/psock_tpacket.c @@ -0,0 +1,850 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright 2013 Red Hat, Inc. + * Author: Daniel Borkmann <dborkman@redhat.com> + * Chetan Loke <loke.chetan@gmail.com> (TPACKET_V3 usage example) + * + * A basic test of packet socket's TPACKET_V1/TPACKET_V2/TPACKET_V3 behavior. + * + * Control: + * Test the setup of the TPACKET socket with different patterns that are + * known to fail (TODO) resp. succeed (OK). + * + * Datapath: + * Open a pair of packet sockets and send resp. receive an a priori known + * packet pattern accross the sockets and check if it was received resp. + * sent correctly. Fanout in combination with RX_RING is currently not + * tested here. + * + * The test currently runs for + * - TPACKET_V1: RX_RING, TX_RING + * - TPACKET_V2: RX_RING, TX_RING + * - TPACKET_V3: RX_RING + */ + +#include <stdio.h> +#include <stdlib.h> +#include <sys/types.h> +#include <sys/stat.h> +#include <sys/socket.h> +#include <sys/mman.h> +#include <linux/if_packet.h> +#include <linux/filter.h> +#include <ctype.h> +#include <fcntl.h> +#include <unistd.h> +#include <bits/wordsize.h> +#include <net/ethernet.h> +#include <netinet/ip.h> +#include <arpa/inet.h> +#include <stdint.h> +#include <string.h> +#include <assert.h> +#include <net/if.h> +#include <inttypes.h> +#include <poll.h> + +#include "psock_lib.h" + +#include "../kselftest.h" + +#ifndef bug_on +# define bug_on(cond) assert(!(cond)) +#endif + +#ifndef __aligned_tpacket +# define __aligned_tpacket __attribute__((aligned(TPACKET_ALIGNMENT))) +#endif + +#ifndef __align_tpacket +# define __align_tpacket(x) __attribute__((aligned(TPACKET_ALIGN(x)))) +#endif + +#define NUM_PACKETS 100 +#define ALIGN_8(x) (((x) + 8 - 1) & ~(8 - 1)) + +struct ring { + struct iovec *rd; + uint8_t *mm_space; + size_t mm_len, rd_len; + struct sockaddr_ll ll; + void (*walk)(int sock, struct ring *ring); + int type, rd_num, flen, version; + union { + struct tpacket_req req; + struct tpacket_req3 req3; + }; +}; + +struct block_desc { + uint32_t version; + uint32_t offset_to_priv; + struct tpacket_hdr_v1 h1; +}; + +union frame_map { + struct { + struct tpacket_hdr tp_h __aligned_tpacket; + struct sockaddr_ll s_ll __align_tpacket(sizeof(struct tpacket_hdr)); + } *v1; + struct { + struct tpacket2_hdr tp_h __aligned_tpacket; + struct sockaddr_ll s_ll __align_tpacket(sizeof(struct tpacket2_hdr)); + } *v2; + void *raw; +}; + +static unsigned int total_packets, total_bytes; + +static int pfsocket(int ver) +{ + int ret, sock = socket(PF_PACKET, SOCK_RAW, 0); + if (sock == -1) { + perror("socket"); + exit(1); + } + + ret = setsockopt(sock, SOL_PACKET, PACKET_VERSION, &ver, sizeof(ver)); + if (ret == -1) { + perror("setsockopt"); + exit(1); + } + + return sock; +} + +static void status_bar_update(void) +{ + if (total_packets % 10 == 0) { + fprintf(stderr, "."); + fflush(stderr); + } +} + +static void test_payload(void *pay, size_t len) +{ + struct ethhdr *eth = pay; + + if (len < sizeof(struct ethhdr)) { + fprintf(stderr, "test_payload: packet too " + "small: %zu bytes!\n", len); + exit(1); + } + + if (eth->h_proto != htons(ETH_P_IP)) { + fprintf(stderr, "test_payload: wrong ethernet " + "type: 0x%x!\n", ntohs(eth->h_proto)); + exit(1); + } +} + +static void create_payload(void *pay, size_t *len) +{ + int i; + struct ethhdr *eth = pay; + struct iphdr *ip = pay + sizeof(*eth); + + /* Lets create some broken crap, that still passes + * our BPF filter. + */ + + *len = DATA_LEN + 42; + + memset(pay, 0xff, ETH_ALEN * 2); + eth->h_proto = htons(ETH_P_IP); + + for (i = 0; i < sizeof(*ip); ++i) + ((uint8_t *) pay)[i + sizeof(*eth)] = (uint8_t) rand(); + + ip->ihl = 5; + ip->version = 4; + ip->protocol = 0x11; + ip->frag_off = 0; + ip->ttl = 64; + ip->tot_len = htons((uint16_t) *len - sizeof(*eth)); + + ip->saddr = htonl(INADDR_LOOPBACK); + ip->daddr = htonl(INADDR_LOOPBACK); + + memset(pay + sizeof(*eth) + sizeof(*ip), + DATA_CHAR, DATA_LEN); +} + +static inline int __v1_rx_kernel_ready(struct tpacket_hdr *hdr) +{ + return ((hdr->tp_status & TP_STATUS_USER) == TP_STATUS_USER); +} + +static inline void __v1_rx_user_ready(struct tpacket_hdr *hdr) +{ + hdr->tp_status = TP_STATUS_KERNEL; + __sync_synchronize(); +} + +static inline int __v2_rx_kernel_ready(struct tpacket2_hdr *hdr) +{ + return ((hdr->tp_status & TP_STATUS_USER) == TP_STATUS_USER); +} + +static inline void __v2_rx_user_ready(struct tpacket2_hdr *hdr) +{ + hdr->tp_status = TP_STATUS_KERNEL; + __sync_synchronize(); +} + +static inline int __v1_v2_rx_kernel_ready(void *base, int version) +{ + switch (version) { + case TPACKET_V1: + return __v1_rx_kernel_ready(base); + case TPACKET_V2: + return __v2_rx_kernel_ready(base); + default: + bug_on(1); + return 0; + } +} + +static inline void __v1_v2_rx_user_ready(void *base, int version) +{ + switch (version) { + case TPACKET_V1: + __v1_rx_user_ready(base); + break; + case TPACKET_V2: + __v2_rx_user_ready(base); + break; + } +} + +static void walk_v1_v2_rx(int sock, struct ring *ring) +{ + struct pollfd pfd; + int udp_sock[2]; + union frame_map ppd; + unsigned int frame_num = 0; + + bug_on(ring->type != PACKET_RX_RING); + + pair_udp_open(udp_sock, PORT_BASE); + + memset(&pfd, 0, sizeof(pfd)); + pfd.fd = sock; + pfd.events = POLLIN | POLLERR; + pfd.revents = 0; + + pair_udp_send(udp_sock, NUM_PACKETS); + + while (total_packets < NUM_PACKETS * 2) { + while (__v1_v2_rx_kernel_ready(ring->rd[frame_num].iov_base, + ring->version)) { + ppd.raw = ring->rd[frame_num].iov_base; + + switch (ring->version) { + case TPACKET_V1: + test_payload((uint8_t *) ppd.raw + ppd.v1->tp_h.tp_mac, + ppd.v1->tp_h.tp_snaplen); + total_bytes += ppd.v1->tp_h.tp_snaplen; + break; + + case TPACKET_V2: + test_payload((uint8_t *) ppd.raw + ppd.v2->tp_h.tp_mac, + ppd.v2->tp_h.tp_snaplen); + total_bytes += ppd.v2->tp_h.tp_snaplen; + break; + } + + status_bar_update(); + total_packets++; + + __v1_v2_rx_user_ready(ppd.raw, ring->version); + + frame_num = (frame_num + 1) % ring->rd_num; + } + + poll(&pfd, 1, 1); + } + + pair_udp_close(udp_sock); + + if (total_packets != 2 * NUM_PACKETS) { + fprintf(stderr, "walk_v%d_rx: received %u out of %u pkts\n", + ring->version, total_packets, NUM_PACKETS); + exit(1); + } + + fprintf(stderr, " %u pkts (%u bytes)", NUM_PACKETS, total_bytes >> 1); +} + +static inline int __v1_tx_kernel_ready(struct tpacket_hdr *hdr) +{ + return !(hdr->tp_status & (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING)); +} + +static inline void __v1_tx_user_ready(struct tpacket_hdr *hdr) +{ + hdr->tp_status = TP_STATUS_SEND_REQUEST; + __sync_synchronize(); +} + +static inline int __v2_tx_kernel_ready(struct tpacket2_hdr *hdr) +{ + return !(hdr->tp_status & (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING)); +} + +static inline void __v2_tx_user_ready(struct tpacket2_hdr *hdr) +{ + hdr->tp_status = TP_STATUS_SEND_REQUEST; + __sync_synchronize(); +} + +static inline int __v3_tx_kernel_ready(struct tpacket3_hdr *hdr) +{ + return !(hdr->tp_status & (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING)); +} + +static inline void __v3_tx_user_ready(struct tpacket3_hdr *hdr) +{ + hdr->tp_status = TP_STATUS_SEND_REQUEST; + __sync_synchronize(); +} + +static inline int __tx_kernel_ready(void *base, int version) +{ + switch (version) { + case TPACKET_V1: + return __v1_tx_kernel_ready(base); + case TPACKET_V2: + return __v2_tx_kernel_ready(base); + case TPACKET_V3: + return __v3_tx_kernel_ready(base); + default: + bug_on(1); + return 0; + } +} + +static inline void __tx_user_ready(void *base, int version) +{ + switch (version) { + case TPACKET_V1: + __v1_tx_user_ready(base); + break; + case TPACKET_V2: + __v2_tx_user_ready(base); + break; + case TPACKET_V3: + __v3_tx_user_ready(base); + break; + } +} + +static void __v1_v2_set_packet_loss_discard(int sock) +{ + int ret, discard = 1; + + ret = setsockopt(sock, SOL_PACKET, PACKET_LOSS, (void *) &discard, + sizeof(discard)); + if (ret == -1) { + perror("setsockopt"); + exit(1); + } +} + +static inline void *get_next_frame(struct ring *ring, int n) +{ + uint8_t *f0 = ring->rd[0].iov_base; + + switch (ring->version) { + case TPACKET_V1: + case TPACKET_V2: + return ring->rd[n].iov_base; + case TPACKET_V3: + return f0 + (n * ring->req3.tp_frame_size); + default: + bug_on(1); + } +} + +static void walk_tx(int sock, struct ring *ring) +{ + struct pollfd pfd; + int rcv_sock, ret; + size_t packet_len; + union frame_map ppd; + char packet[1024]; + unsigned int frame_num = 0, got = 0; + struct sockaddr_ll ll = { + .sll_family = PF_PACKET, + .sll_halen = ETH_ALEN, + }; + int nframes; + + /* TPACKET_V{1,2} sets up the ring->rd* related variables based + * on frames (e.g., rd_num is tp_frame_nr) whereas V3 sets these + * up based on blocks (e.g, rd_num is tp_block_nr) + */ + if (ring->version <= TPACKET_V2) + nframes = ring->rd_num; + else + nframes = ring->req3.tp_frame_nr; + + bug_on(ring->type != PACKET_TX_RING); + bug_on(nframes < NUM_PACKETS); + + rcv_sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL)); + if (rcv_sock == -1) { + perror("socket"); + exit(1); + } + + pair_udp_setfilter(rcv_sock); + + ll.sll_ifindex = if_nametoindex("lo"); + ret = bind(rcv_sock, (struct sockaddr *) &ll, sizeof(ll)); + if (ret == -1) { + perror("bind"); + exit(1); + } + + memset(&pfd, 0, sizeof(pfd)); + pfd.fd = sock; + pfd.events = POLLOUT | POLLERR; + pfd.revents = 0; + + total_packets = NUM_PACKETS; + create_payload(packet, &packet_len); + + while (total_packets > 0) { + void *next = get_next_frame(ring, frame_num); + + while (__tx_kernel_ready(next, ring->version) && + total_packets > 0) { + ppd.raw = next; + + switch (ring->version) { + case TPACKET_V1: + ppd.v1->tp_h.tp_snaplen = packet_len; + ppd.v1->tp_h.tp_len = packet_len; + + memcpy((uint8_t *) ppd.raw + TPACKET_HDRLEN - + sizeof(struct sockaddr_ll), packet, + packet_len); + total_bytes += ppd.v1->tp_h.tp_snaplen; + break; + + case TPACKET_V2: + ppd.v2->tp_h.tp_snaplen = packet_len; + ppd.v2->tp_h.tp_len = packet_len; + + memcpy((uint8_t *) ppd.raw + TPACKET2_HDRLEN - + sizeof(struct sockaddr_ll), packet, + packet_len); + total_bytes += ppd.v2->tp_h.tp_snaplen; + break; + case TPACKET_V3: { + struct tpacket3_hdr *tx = next; + + tx->tp_snaplen = packet_len; + tx->tp_len = packet_len; + tx->tp_next_offset = 0; + + memcpy((uint8_t *)tx + TPACKET3_HDRLEN - + sizeof(struct sockaddr_ll), packet, + packet_len); + total_bytes += tx->tp_snaplen; + break; + } + } + + status_bar_update(); + total_packets--; + + __tx_user_ready(next, ring->version); + + frame_num = (frame_num + 1) % nframes; + } + + poll(&pfd, 1, 1); + } + + bug_on(total_packets != 0); + + ret = sendto(sock, NULL, 0, 0, NULL, 0); + if (ret == -1) { + perror("sendto"); + exit(1); + } + + while ((ret = recvfrom(rcv_sock, packet, sizeof(packet), + 0, NULL, NULL)) > 0 && + total_packets < NUM_PACKETS) { + got += ret; + test_payload(packet, ret); + + status_bar_update(); + total_packets++; + } + + close(rcv_sock); + + if (total_packets != NUM_PACKETS) { + fprintf(stderr, "walk_v%d_rx: received %u out of %u pkts\n", + ring->version, total_packets, NUM_PACKETS); + exit(1); + } + + fprintf(stderr, " %u pkts (%u bytes)", NUM_PACKETS, got); +} + +static void walk_v1_v2(int sock, struct ring *ring) +{ + if (ring->type == PACKET_RX_RING) + walk_v1_v2_rx(sock, ring); + else + walk_tx(sock, ring); +} + +static uint64_t __v3_prev_block_seq_num = 0; + +void __v3_test_block_seq_num(struct block_desc *pbd) +{ + if (__v3_prev_block_seq_num + 1 != pbd->h1.seq_num) { + fprintf(stderr, "\nprev_block_seq_num:%"PRIu64", expected " + "seq:%"PRIu64" != actual seq:%"PRIu64"\n", + __v3_prev_block_seq_num, __v3_prev_block_seq_num + 1, + (uint64_t) pbd->h1.seq_num); + exit(1); + } + + __v3_prev_block_seq_num = pbd->h1.seq_num; +} + +static void __v3_test_block_len(struct block_desc *pbd, uint32_t bytes, int block_num) +{ + if (pbd->h1.num_pkts && bytes != pbd->h1.blk_len) { + fprintf(stderr, "\nblock:%u with %upackets, expected " + "len:%u != actual len:%u\n", block_num, + pbd->h1.num_pkts, bytes, pbd->h1.blk_len); + exit(1); + } +} + +static void __v3_test_block_header(struct block_desc *pbd, const int block_num) +{ + if ((pbd->h1.block_status & TP_STATUS_USER) == 0) { + fprintf(stderr, "\nblock %u: not in TP_STATUS_USER\n", block_num); + exit(1); + } + + __v3_test_block_seq_num(pbd); +} + +static void __v3_walk_block(struct block_desc *pbd, const int block_num) +{ + int num_pkts = pbd->h1.num_pkts, i; + unsigned long bytes = 0, bytes_with_padding = ALIGN_8(sizeof(*pbd)); + struct tpacket3_hdr *ppd; + + __v3_test_block_header(pbd, block_num); + + ppd = (struct tpacket3_hdr *) ((uint8_t *) pbd + + pbd->h1.offset_to_first_pkt); + + for (i = 0; i < num_pkts; ++i) { + bytes += ppd->tp_snaplen; + + if (ppd->tp_next_offset) + bytes_with_padding += ppd->tp_next_offset; + else + bytes_with_padding += ALIGN_8(ppd->tp_snaplen + ppd->tp_mac); + + test_payload((uint8_t *) ppd + ppd->tp_mac, ppd->tp_snaplen); + + status_bar_update(); + total_packets++; + + ppd = (struct tpacket3_hdr *) ((uint8_t *) ppd + ppd->tp_next_offset); + __sync_synchronize(); + } + + __v3_test_block_len(pbd, bytes_with_padding, block_num); + total_bytes += bytes; +} + +void __v3_flush_block(struct block_desc *pbd) +{ + pbd->h1.block_status = TP_STATUS_KERNEL; + __sync_synchronize(); +} + +static void walk_v3_rx(int sock, struct ring *ring) +{ + unsigned int block_num = 0; + struct pollfd pfd; + struct block_desc *pbd; + int udp_sock[2]; + + bug_on(ring->type != PACKET_RX_RING); + + pair_udp_open(udp_sock, PORT_BASE); + + memset(&pfd, 0, sizeof(pfd)); + pfd.fd = sock; + pfd.events = POLLIN | POLLERR; + pfd.revents = 0; + + pair_udp_send(udp_sock, NUM_PACKETS); + + while (total_packets < NUM_PACKETS * 2) { + pbd = (struct block_desc *) ring->rd[block_num].iov_base; + + while ((pbd->h1.block_status & TP_STATUS_USER) == 0) + poll(&pfd, 1, 1); + + __v3_walk_block(pbd, block_num); + __v3_flush_block(pbd); + + block_num = (block_num + 1) % ring->rd_num; + } + + pair_udp_close(udp_sock); + + if (total_packets != 2 * NUM_PACKETS) { + fprintf(stderr, "walk_v3_rx: received %u out of %u pkts\n", + total_packets, NUM_PACKETS); + exit(1); + } + + fprintf(stderr, " %u pkts (%u bytes)", NUM_PACKETS, total_bytes >> 1); +} + +static void walk_v3(int sock, struct ring *ring) +{ + if (ring->type == PACKET_RX_RING) + walk_v3_rx(sock, ring); + else + walk_tx(sock, ring); +} + +static void __v1_v2_fill(struct ring *ring, unsigned int blocks) +{ + ring->req.tp_block_size = getpagesize() << 2; + ring->req.tp_frame_size = TPACKET_ALIGNMENT << 7; + ring->req.tp_block_nr = blocks; + + ring->req.tp_frame_nr = ring->req.tp_block_size / + ring->req.tp_frame_size * + ring->req.tp_block_nr; + + ring->mm_len = ring->req.tp_block_size * ring->req.tp_block_nr; + ring->walk = walk_v1_v2; + ring->rd_num = ring->req.tp_frame_nr; + ring->flen = ring->req.tp_frame_size; +} + +static void __v3_fill(struct ring *ring, unsigned int blocks, int type) +{ + if (type == PACKET_RX_RING) { + ring->req3.tp_retire_blk_tov = 64; + ring->req3.tp_sizeof_priv = 0; + ring->req3.tp_feature_req_word = TP_FT_REQ_FILL_RXHASH; + } + ring->req3.tp_block_size = getpagesize() << 2; + ring->req3.tp_frame_size = TPACKET_ALIGNMENT << 7; + ring->req3.tp_block_nr = blocks; + + ring->req3.tp_frame_nr = ring->req3.tp_block_size / + ring->req3.tp_frame_size * + ring->req3.tp_block_nr; + + ring->mm_len = ring->req3.tp_block_size * ring->req3.tp_block_nr; + ring->walk = walk_v3; + ring->rd_num = ring->req3.tp_block_nr; + ring->flen = ring->req3.tp_block_size; +} + +static void setup_ring(int sock, struct ring *ring, int version, int type) +{ + int ret = 0; + unsigned int blocks = 256; + + ring->type = type; + ring->version = version; + + switch (version) { + case TPACKET_V1: + case TPACKET_V2: + if (type == PACKET_TX_RING) + __v1_v2_set_packet_loss_discard(sock); + __v1_v2_fill(ring, blocks); + ret = setsockopt(sock, SOL_PACKET, type, &ring->req, + sizeof(ring->req)); + break; + + case TPACKET_V3: + __v3_fill(ring, blocks, type); + ret = setsockopt(sock, SOL_PACKET, type, &ring->req3, + sizeof(ring->req3)); + break; + } + + if (ret == -1) { + perror("setsockopt"); + exit(1); + } + + ring->rd_len = ring->rd_num * sizeof(*ring->rd); + ring->rd = malloc(ring->rd_len); + if (ring->rd == NULL) { + perror("malloc"); + exit(1); + } + + total_packets = 0; + total_bytes = 0; +} + +static void mmap_ring(int sock, struct ring *ring) +{ + int i; + + ring->mm_space = mmap(0, ring->mm_len, PROT_READ | PROT_WRITE, + MAP_SHARED | MAP_LOCKED | MAP_POPULATE, sock, 0); + if (ring->mm_space == MAP_FAILED) { + perror("mmap"); + exit(1); + } + + memset(ring->rd, 0, ring->rd_len); + for (i = 0; i < ring->rd_num; ++i) { + ring->rd[i].iov_base = ring->mm_space + (i * ring->flen); + ring->rd[i].iov_len = ring->flen; + } +} + +static void bind_ring(int sock, struct ring *ring) +{ + int ret; + + pair_udp_setfilter(sock); + + ring->ll.sll_family = PF_PACKET; + ring->ll.sll_protocol = htons(ETH_P_ALL); + ring->ll.sll_ifindex = if_nametoindex("lo"); + ring->ll.sll_hatype = 0; + ring->ll.sll_pkttype = 0; + ring->ll.sll_halen = 0; + + ret = bind(sock, (struct sockaddr *) &ring->ll, sizeof(ring->ll)); + if (ret == -1) { + perror("bind"); + exit(1); + } +} + +static void walk_ring(int sock, struct ring *ring) +{ + ring->walk(sock, ring); +} + +static void unmap_ring(int sock, struct ring *ring) +{ + munmap(ring->mm_space, ring->mm_len); + free(ring->rd); +} + +static int test_kernel_bit_width(void) +{ + char in[512], *ptr; + int num = 0, fd; + ssize_t ret; + + fd = open("/proc/kallsyms", O_RDONLY); + if (fd == -1) { + perror("open"); + exit(1); + } + + ret = read(fd, in, sizeof(in)); + if (ret <= 0) { + perror("read"); + exit(1); + } + + close(fd); + + ptr = in; + while(!isspace(*ptr)) { + num++; + ptr++; + } + + return num * 4; +} + +static int test_user_bit_width(void) +{ + return __WORDSIZE; +} + +static const char *tpacket_str[] = { + [TPACKET_V1] = "TPACKET_V1", + [TPACKET_V2] = "TPACKET_V2", + [TPACKET_V3] = "TPACKET_V3", +}; + +static const char *type_str[] = { + [PACKET_RX_RING] = "PACKET_RX_RING", + [PACKET_TX_RING] = "PACKET_TX_RING", +}; + +static int test_tpacket(int version, int type) +{ + int sock; + struct ring ring; + + fprintf(stderr, "test: %s with %s ", tpacket_str[version], + type_str[type]); + fflush(stderr); + + if (version == TPACKET_V1 && + test_kernel_bit_width() != test_user_bit_width()) { + fprintf(stderr, "test: skip %s %s since user and kernel " + "space have different bit width\n", + tpacket_str[version], type_str[type]); + return KSFT_SKIP; + } + + sock = pfsocket(version); + memset(&ring, 0, sizeof(ring)); + setup_ring(sock, &ring, version, type); + mmap_ring(sock, &ring); + bind_ring(sock, &ring); + walk_ring(sock, &ring); + unmap_ring(sock, &ring); + close(sock); + + fprintf(stderr, "\n"); + return 0; +} + +int main(void) +{ + int ret = 0; + + ret |= test_tpacket(TPACKET_V1, PACKET_RX_RING); + ret |= test_tpacket(TPACKET_V1, PACKET_TX_RING); + + ret |= test_tpacket(TPACKET_V2, PACKET_RX_RING); + ret |= test_tpacket(TPACKET_V2, PACKET_TX_RING); + + ret |= test_tpacket(TPACKET_V3, PACKET_RX_RING); + ret |= test_tpacket(TPACKET_V3, PACKET_TX_RING); + + if (ret) + return 1; + + printf("OK. All tests passed\n"); + return 0; +} |