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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 <stdio.h>
#include "test_nlattr.h"
#include <arpa/inet.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)
{
unsigned int len = msg_len;
SET_STRUCT(struct nlmsghdr, nlh,
.nlmsg_len = 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));
len -= NLMSG_SPACE(hdrlen);
SET_STRUCT(struct nlattr, nla,
.nla_len = len,
.nla_type = MDBA_MDB
);
nla = nla + 1;
len -= NLA_HDRLEN;
SET_STRUCT(struct nlattr, nla,
.nla_len = len,
.nla_type = MDBA_MDB_ENTRY
);
}
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_MDB}"
", [{nla_len=%u, nla_type=MDBA_MDB_ENTRY}",
msg_len, msg_len - NLMSG_SPACE(hdrlen),
msg_len - NLMSG_SPACE(hdrlen) - NLA_HDRLEN);
}
int
main(void)
{
skip_if_unavailable("/proc/self/fd/");
const int fd = create_nl_socket(NETLINK_ROUTE);
void *nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen), NLA_HDRLEN + 4
- 4 + NLA_HDRLEN * 2 + sizeof(struct nlattr)
+ sizeof(struct br_mdb_entry)
);
static char pattern[4096];
fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
const unsigned int nla_type = 0xffff & NLA_TYPE_MASK;
char nla_type_str[256];
sprintf(nla_type_str, "%#x /* MDBA_MDB_ENTRY_??? */", nla_type);
TEST_NLATTR_(fd, nlh0 - NLA_HDRLEN * 2, hdrlen + NLA_HDRLEN * 2,
init_br_port_msg, print_br_port_msg,
nla_type, nla_type_str,
4, pattern, 4,
print_quoted_hex(pattern, 4);
printf("]]"));
struct br_mdb_entry entry = {
.ifindex = ifindex_lo(),
.state = MDB_TEMPORARY,
.flags = MDB_FLAGS_OFFLOAD,
.vid = 0xcdef,
.addr = {
.proto = htons(AF_UNSPEC)
}
};
memcpy(&entry.addr.u, pattern, sizeof(entry.addr.u));
TEST_NESTED_NLATTR_OBJECT_EX(fd, nlh0, hdrlen,
init_br_port_msg, print_br_port_msg,
MDBA_MDB_ENTRY_INFO, pattern, entry, 2,
printf("{ifindex=" IFINDEX_LO_STR);
printf(", state=MDB_TEMPORARY");
printf(", flags=MDB_FLAGS_OFFLOAD");
printf(", ");
PRINT_FIELD_U(entry, vid);
printf(", addr={u=");
print_quoted_hex(&entry.addr.u,
sizeof(entry.addr.u));
printf(", proto=htons(AF_UNSPEC)}}"));
static const struct nlattr nla = {
.nla_len = sizeof(nla),
.nla_type = MDBA_MDB_EATTR_TIMER
};
char buf[NLMSG_ALIGN(sizeof(entry)) + sizeof(nla)];
memcpy(buf, &entry, sizeof(entry));
memcpy(buf + NLMSG_ALIGN(sizeof(entry)), &nla, sizeof(nla));
TEST_NLATTR(fd, nlh0 - NLA_HDRLEN * 2, hdrlen + NLA_HDRLEN * 2,
init_br_port_msg, print_br_port_msg,
MDBA_MDB_ENTRY_INFO, sizeof(buf), buf, sizeof(buf),
printf("{ifindex=" IFINDEX_LO_STR);
printf(", state=MDB_TEMPORARY");
printf(", flags=MDB_FLAGS_OFFLOAD");
printf(", ");
PRINT_FIELD_U(entry, vid);
printf(", addr={u=");
print_quoted_hex(&entry.addr.u, sizeof(entry.addr.u));
printf(", proto=htons(AF_UNSPEC)}}"
", {nla_len=%u, nla_type=MDBA_MDB_EATTR_TIMER}]]",
nla.nla_len));
puts("+++ exited with 0 +++");
return 0;
}
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