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/*
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 2017-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <math.h>
#include <stdio.h>
#include <unistd.h>
#include "test_nlattr.h"
#include <linux/if_bridge.h>
#include <linux/rtnetlink.h>
const unsigned int hdrlen = sizeof(struct br_port_msg);
static void
init_br_port_msg(struct nlmsghdr *const nlh, const unsigned int msg_len)
{
SET_STRUCT(struct nlmsghdr, nlh,
.nlmsg_len = msg_len,
.nlmsg_type = RTM_GETMDB,
.nlmsg_flags = NLM_F_DUMP
);
struct br_port_msg *const msg = NLMSG_DATA(nlh);
SET_STRUCT(struct br_port_msg, msg,
.family = AF_UNIX,
.ifindex = ifindex_lo()
);
struct nlattr *nla = NLMSG_ATTR(nlh, sizeof(*msg));
SET_STRUCT(struct nlattr, nla,
.nla_len = msg_len - NLMSG_SPACE(hdrlen),
.nla_type = MDBA_ROUTER
);
}
static void
print_br_port_msg(const unsigned int msg_len)
{
printf("{nlmsg_len=%u, nlmsg_type=RTM_GETMDB, nlmsg_flags=NLM_F_DUMP"
", nlmsg_seq=0, nlmsg_pid=0}, {family=AF_UNIX"
", ifindex=" IFINDEX_LO_STR "}"
", [{nla_len=%u, nla_type=MDBA_ROUTER}",
msg_len, msg_len - NLMSG_SPACE(hdrlen));
}
int
main(void)
{
skip_if_unavailable("/proc/self/fd/");
const uint32_t ifindex = ifindex_lo();
const uint8_t type = MDB_RTR_TYPE_DISABLED;
static const struct nlattr nla = {
.nla_len = NLA_HDRLEN + sizeof(type),
.nla_type = MDBA_ROUTER_PATTR_TYPE
};
char buf[NLMSG_ALIGN(ifindex) + NLA_HDRLEN + sizeof(type)];
const int fd = create_nl_socket(NETLINK_ROUTE);
void *nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen),
NLA_HDRLEN + sizeof(buf));
static char pattern[4096];
fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
TEST_NESTED_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_br_port_msg, print_br_port_msg,
MDBA_ROUTER_PORT, pattern, ifindex,
printf(IFINDEX_LO_STR));
memcpy(buf, &ifindex, sizeof(ifindex));
memcpy(buf + NLMSG_ALIGN(ifindex), &nla, sizeof(nla));
memcpy(buf + NLMSG_ALIGN(ifindex) + NLA_HDRLEN, &type, sizeof(type));
TEST_NLATTR(fd, nlh0 - NLA_HDRLEN, hdrlen + NLA_HDRLEN,
init_br_port_msg, print_br_port_msg,
MDBA_ROUTER_PORT, sizeof(buf), buf, sizeof(buf),
printf(IFINDEX_LO_STR
", [{nla_len=%u, nla_type=MDBA_ROUTER_PATTR_TYPE}"
", MDB_RTR_TYPE_DISABLED]]",
nla.nla_len));
/* timers */
static const struct {
uint32_t val;
const char *str;
} pattrs[] = {
{ ARG_STR(MDBA_ROUTER_PATTR_TIMER) },
{ ARG_STR(MDBA_ROUTER_PATTR_INET_TIMER) },
{ ARG_STR(MDBA_ROUTER_PATTR_INET6_TIMER) },
};
uint32_t timer = 0xdead;
long clk_tck;
int precision = 0;
clk_tck = sysconf(_SC_CLK_TCK);
if (clk_tck > 0) {
precision = clk_tck > 1 ? MIN((int) ceil(log10(clk_tck - 1)), 9)
: 0;
timer *= clk_tck;
}
struct nlattr nla_timer = {
.nla_len = NLA_HDRLEN + sizeof(timer),
};
char buf_timer[NLMSG_ALIGN(ifindex) + NLA_HDRLEN + sizeof(timer)];
memcpy(buf_timer, &ifindex, sizeof(ifindex));
memcpy(buf_timer + NLMSG_ALIGN(ifindex) + NLA_HDRLEN,
&timer, sizeof(timer));
for (size_t i = 0; i < ARRAY_SIZE(pattrs); i++) {
nla_timer.nla_type = pattrs[i].val;
memcpy(buf_timer + NLMSG_ALIGN(ifindex),
&nla_timer, sizeof(nla_timer));
TEST_NLATTR(fd, nlh0 - NLA_HDRLEN, hdrlen + NLA_HDRLEN,
init_br_port_msg, print_br_port_msg,
MDBA_ROUTER_PORT,
sizeof(buf_timer), buf_timer, sizeof(buf_timer),
printf(IFINDEX_LO_STR
", [{nla_len=%u, nla_type=%s}, %u",
nla_timer.nla_len, pattrs[i].str, timer);
if (clk_tck > 0)
printf(" /* 57005.%0*u s */", precision, 0);
printf("]]"));
}
puts("+++ exited with 0 +++");
return 0;
}
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