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/*
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 2017-2018 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <net/if.h>
#include "test_nlattr.h"
#include <sys/socket.h>
#include <linux/filter.h>
#include <linux/packet_diag.h>
#include <linux/rtnetlink.h>
#include <linux/sock_diag.h>
static void
init_packet_diag_msg(struct nlmsghdr *const nlh, const unsigned int msg_len)
{
SET_STRUCT(struct nlmsghdr, nlh,
.nlmsg_len = msg_len,
.nlmsg_type = SOCK_DIAG_BY_FAMILY,
.nlmsg_flags = NLM_F_DUMP
);
struct packet_diag_msg *const msg = NLMSG_DATA(nlh);
SET_STRUCT(struct packet_diag_msg, msg,
.pdiag_family = AF_PACKET,
.pdiag_type = SOCK_STREAM,
.pdiag_num = 3,
);
}
static void
print_packet_diag_msg(const unsigned int msg_len)
{
printf("{len=%u, type=SOCK_DIAG_BY_FAMILY"
", flags=NLM_F_DUMP, seq=0, pid=0}"
", {pdiag_family=AF_PACKET"
", pdiag_type=SOCK_STREAM, pdiag_num=ETH_P_ALL"
", pdiag_ino=0, pdiag_cookie=[0, 0]}",
msg_len);
}
static void
print_packet_diag_mclist(const struct packet_diag_mclist *const dml, size_t i)
{
printf("{pdmc_index=" IFINDEX_LO_STR);
PRINT_FIELD_U(", ", *dml, pdmc_count);
PRINT_FIELD_U(", ", *dml, pdmc_type);
PRINT_FIELD_U(", ", *dml, pdmc_alen);
printf(", pdmc_addr=");
print_quoted_hex(dml->pdmc_addr, dml->pdmc_alen);
printf("}");
}
static const struct sock_filter filter[] = {
BPF_STMT(BPF_LD|BPF_B|BPF_ABS, SKF_AD_OFF+SKF_AD_PKTTYPE),
BPF_STMT(BPF_RET|BPF_K, 0x2a)
};
static void
print_sock_filter(const struct sock_filter *const f, size_t i)
{
if (f == filter)
printf("BPF_STMT(BPF_LD|BPF_B|BPF_ABS"
", SKF_AD_OFF+SKF_AD_PKTTYPE)");
else
printf("BPF_STMT(BPF_RET|BPF_K, 0x2a)");
}
int
main(void)
{
skip_if_unavailable("/proc/self/fd/");
struct packet_diag_info pinfo = {
.pdi_index = ifindex_lo(),
.pdi_version = 2,
.pdi_reserve = 0xcfaacdaf,
.pdi_copy_thresh = 0xdabacdaf,
.pdi_tstamp = 0xeafbaadf,
.pdi_flags = PDI_RUNNING
};
const struct packet_diag_mclist dml[] = {
{
.pdmc_index = ifindex_lo(),
.pdmc_count = 0xabcdaefc,
.pdmc_type = 0xcdaf,
.pdmc_alen = 4,
.pdmc_addr = "1234"
},
{
.pdmc_index = ifindex_lo(),
.pdmc_count = 0xdaefeafc,
.pdmc_type = 0xadef,
.pdmc_alen = 4,
.pdmc_addr = "5678"
}
};
static const struct packet_diag_ring pdr = {
.pdr_block_size = 0xabcdafed,
.pdr_block_nr = 0xbcadefae,
.pdr_frame_size = 0xcabdfeac,
.pdr_frame_nr = 0xdeaeadef,
.pdr_retire_tmo = 0xedbafeac,
.pdr_sizeof_priv = 0xfeadeacd,
.pdr_features = 0xadebadea
};
int fd = create_nl_socket(NETLINK_SOCK_DIAG);
const unsigned int hdrlen = sizeof(struct packet_diag_msg);
void *const nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen),
NLA_HDRLEN + sizeof(dml));
static char pattern[4096];
fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_packet_diag_msg, print_packet_diag_msg,
PACKET_DIAG_INFO, pattern, pinfo,
printf("{pdi_index=%s", IFINDEX_LO_STR);
printf(", pdi_version=TPACKET_V3");
PRINT_FIELD_U(", ", pinfo, pdi_reserve);
PRINT_FIELD_U(", ", pinfo, pdi_copy_thresh);
PRINT_FIELD_U(", ", pinfo, pdi_tstamp);
printf(", pdi_flags=PDI_RUNNING}"));
TEST_NLATTR_ARRAY(fd, nlh0, hdrlen,
init_packet_diag_msg, print_packet_diag_msg,
PACKET_DIAG_MCLIST, pattern, dml,
print_packet_diag_mclist);
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_packet_diag_msg, print_packet_diag_msg,
PACKET_DIAG_RX_RING, pattern, pdr,
PRINT_FIELD_U("{", pdr, pdr_block_size);
PRINT_FIELD_U(", ", pdr, pdr_block_nr);
PRINT_FIELD_U(", ", pdr, pdr_frame_size);
PRINT_FIELD_U(", ", pdr, pdr_frame_nr);
PRINT_FIELD_U(", ", pdr, pdr_retire_tmo);
PRINT_FIELD_U(", ", pdr, pdr_sizeof_priv);
PRINT_FIELD_U(", ", pdr, pdr_features);
printf("}"));
TEST_NLATTR_ARRAY(fd, nlh0, hdrlen,
init_packet_diag_msg, print_packet_diag_msg,
PACKET_DIAG_FILTER, pattern, filter,
print_sock_filter);
printf("+++ exited with 0 +++\n");
return 0;
}
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