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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 <arpa/inet.h>
#include <net/if.h>
#include <netinet/tcp.h>
#include "test_nlattr.h"
#include <linux/inet_diag.h>
#include <linux/sock_diag.h>
static const char * const sk_meminfo_strs[] = {
"SK_MEMINFO_RMEM_ALLOC",
"SK_MEMINFO_RCVBUF",
"SK_MEMINFO_WMEM_ALLOC",
"SK_MEMINFO_SNDBUF",
"SK_MEMINFO_FWD_ALLOC",
"SK_MEMINFO_WMEM_QUEUED",
"SK_MEMINFO_OPTMEM",
"SK_MEMINFO_BACKLOG",
"SK_MEMINFO_DROPS",
};
static const char address[] = "10.11.12.13";
static void
init_inet_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 inet_diag_msg *const msg = NLMSG_DATA(nlh);
SET_STRUCT(struct inet_diag_msg, msg,
.idiag_family = AF_INET,
.idiag_state = TCP_LISTEN,
.id.idiag_if = ifindex_lo()
);
if (!inet_pton(AF_INET, address, msg->id.idiag_src) ||
!inet_pton(AF_INET, address, msg->id.idiag_dst))
perror_msg_and_skip("inet_pton");
}
static void
print_inet_diag_msg(const unsigned int msg_len)
{
printf("{len=%u, type=SOCK_DIAG_BY_FAMILY"
", flags=NLM_F_DUMP, seq=0, pid=0}, {idiag_family=AF_INET"
", idiag_state=TCP_LISTEN, idiag_timer=0, idiag_retrans=0"
", id={idiag_sport=htons(0), idiag_dport=htons(0)"
", idiag_src=inet_addr(\"%s\")"
", idiag_dst=inet_addr(\"%s\")"
", idiag_if=" IFINDEX_LO_STR
", idiag_cookie=[0, 0]}"
", idiag_expires=0, idiag_rqueue=0, idiag_wqueue=0"
", idiag_uid=0, idiag_inode=0}",
msg_len, address, address);
}
static void
print_uint(const unsigned int *p, size_t i)
{
if (i >= ARRAY_SIZE(sk_meminfo_strs))
printf("[%zu /* SK_MEMINFO_??? */", i);
else
printf("[%s", sk_meminfo_strs[i]);
printf("] = %u", *p);
}
int
main(void)
{
skip_if_unavailable("/proc/self/fd/");
static const struct inet_diag_meminfo minfo = {
.idiag_rmem = 0xfadcacdb,
.idiag_wmem = 0xbdabcada,
.idiag_fmem = 0xbadbfafb,
.idiag_tmem = 0xfdacdadf
};
static const struct tcpvegas_info vegas = {
.tcpv_enabled = 0xfadcacdb,
.tcpv_rttcnt = 0xbdabcada,
.tcpv_rtt = 0xbadbfafb,
.tcpv_minrtt = 0xfdacdadf
};
static const struct tcp_dctcp_info dctcp = {
.dctcp_enabled = 0xfdac,
.dctcp_ce_state = 0xfadc,
.dctcp_alpha = 0xbdabcada,
.dctcp_ab_ecn = 0xbadbfafb,
.dctcp_ab_tot = 0xfdacdadf
};
static const struct tcp_bbr_info bbr = {
.bbr_bw_lo = 0xfdacdadf,
.bbr_bw_hi = 0xfadcacdb,
.bbr_min_rtt = 0xbdabcada,
.bbr_pacing_gain = 0xbadbfafb,
.bbr_cwnd_gain = 0xfdacdadf
};
static const uint32_t mem[] = { 0xaffacbad, 0xffadbcab };
static uint32_t bigmem[SK_MEMINFO_VARS + 1];
static const uint32_t mark = 0xabdfadca;
static const uint8_t shutdown = 0xcd;
const int fd = create_nl_socket(NETLINK_SOCK_DIAG);
const unsigned int hdrlen = sizeof(struct inet_diag_msg);
void *const nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen),
NLA_HDRLEN +
MAX(sizeof(bigmem), DEFAULT_STRLEN));
static char pattern[4096];
fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_inet_diag_msg, print_inet_diag_msg,
INET_DIAG_MEMINFO, pattern, minfo,
PRINT_FIELD_U("{", minfo, idiag_rmem);
PRINT_FIELD_U(", ", minfo, idiag_wmem);
PRINT_FIELD_U(", ", minfo, idiag_fmem);
PRINT_FIELD_U(", ", minfo, idiag_tmem);
printf("}"));
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_inet_diag_msg, print_inet_diag_msg,
INET_DIAG_VEGASINFO, pattern, vegas,
PRINT_FIELD_U("{", vegas, tcpv_enabled);
PRINT_FIELD_U(", ", vegas, tcpv_rttcnt);
PRINT_FIELD_U(", ", vegas, tcpv_rtt);
PRINT_FIELD_U(", ", vegas, tcpv_minrtt);
printf("}"));
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_inet_diag_msg, print_inet_diag_msg,
INET_DIAG_DCTCPINFO, pattern, dctcp,
PRINT_FIELD_U("{", dctcp, dctcp_enabled);
PRINT_FIELD_U(", ", dctcp, dctcp_ce_state);
PRINT_FIELD_U(", ", dctcp, dctcp_alpha);
PRINT_FIELD_U(", ", dctcp, dctcp_ab_ecn);
PRINT_FIELD_U(", ", dctcp, dctcp_ab_tot);
printf("}"));
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_inet_diag_msg, print_inet_diag_msg,
INET_DIAG_BBRINFO, pattern, bbr,
PRINT_FIELD_X("{", bbr, bbr_bw_lo);
PRINT_FIELD_X(", ", bbr, bbr_bw_hi);
PRINT_FIELD_U(", ", bbr, bbr_min_rtt);
PRINT_FIELD_U(", ", bbr, bbr_pacing_gain);
PRINT_FIELD_U(", ", bbr, bbr_cwnd_gain);
printf("}"));
TEST_NLATTR_ARRAY(fd, nlh0, hdrlen,
init_inet_diag_msg, print_inet_diag_msg,
INET_DIAG_SKMEMINFO, pattern, mem, print_uint);
memcpy(bigmem, pattern, sizeof(bigmem));
TEST_NLATTR_ARRAY(fd, nlh0, hdrlen,
init_inet_diag_msg, print_inet_diag_msg,
INET_DIAG_SKMEMINFO, pattern, bigmem, print_uint);
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_inet_diag_msg, print_inet_diag_msg,
INET_DIAG_MARK, pattern, mark,
printf("%u", mark));
TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_inet_diag_msg, print_inet_diag_msg,
INET_DIAG_CLASS_ID, pattern, mark,
printf("%u", mark));
TEST_NLATTR(fd, nlh0, hdrlen,
init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_SHUTDOWN,
sizeof(shutdown), &shutdown, sizeof(shutdown),
printf("%u", shutdown));
char *const str = tail_alloc(DEFAULT_STRLEN);
fill_memory_ex(str, DEFAULT_STRLEN, '0', 10);
TEST_NLATTR(fd, nlh0, hdrlen,
init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_CONG,
DEFAULT_STRLEN, str, DEFAULT_STRLEN,
printf("\"%.*s\"...", DEFAULT_STRLEN, str));
str[DEFAULT_STRLEN - 1] = '\0';
TEST_NLATTR(fd, nlh0, hdrlen,
init_inet_diag_msg, print_inet_diag_msg, INET_DIAG_CONG,
DEFAULT_STRLEN, str, DEFAULT_STRLEN,
printf("\"%s\"", str));
puts("+++ exited with 0 +++");
return 0;
}
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