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/*
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 2017 The strace developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "tests.h"
#include <stdio.h>
#include "test_nlattr.h"
#include <linux/if.h>
#include <linux/if_arp.h>
#ifdef HAVE_LINUX_IF_LINK_H
# include <linux/if_link.h>
#endif
#include <linux/rtnetlink.h>
#ifndef IFLA_XDP
# define IFLA_XDP 43
#endif
#ifndef IFLA_XDP_FD
# define IFLA_XDP_FD 1
#endif
const unsigned int hdrlen = sizeof(struct ifinfomsg);
static void
init_ifinfomsg(struct nlmsghdr *const nlh, const unsigned int msg_len)
{
SET_STRUCT(struct nlmsghdr, nlh,
.nlmsg_len = msg_len,
.nlmsg_type = RTM_GETLINK,
.nlmsg_flags = NLM_F_DUMP
);
struct ifinfomsg *const msg = NLMSG_DATA(nlh);
SET_STRUCT(struct ifinfomsg, msg,
.ifi_family = AF_UNIX,
.ifi_type = ARPHRD_LOOPBACK,
.ifi_index = ifindex_lo(),
.ifi_flags = IFF_UP,
);
struct nlattr *const nla = NLMSG_ATTR(nlh, sizeof(*msg));
SET_STRUCT(struct nlattr, nla,
.nla_len = msg_len - NLMSG_SPACE(hdrlen),
.nla_type = IFLA_XDP
);
}
static void
print_ifinfomsg(const unsigned int msg_len)
{
printf("{len=%u, type=RTM_GETLINK, flags=NLM_F_DUMP"
", seq=0, pid=0}, {ifi_family=AF_UNIX"
", ifi_type=ARPHRD_LOOPBACK"
", ifi_index=" IFINDEX_LO_STR
", ifi_flags=IFF_UP, ifi_change=0}"
", {{nla_len=%u, nla_type=IFLA_XDP}",
msg_len, msg_len - NLMSG_SPACE(hdrlen));
}
int
main(void)
{
skip_if_unavailable("/proc/self/fd/");
const int fd = create_nl_socket(NETLINK_ROUTE);
void *nlh0 = tail_alloc(NLMSG_SPACE(hdrlen));
static char pattern[4096];
fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
const int32_t num = 0xabacdbcd;
TEST_NESTED_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_ifinfomsg, print_ifinfomsg,
IFLA_XDP_FD, pattern, num,
printf("%d", num));
#ifdef XDP_FLAGS_UPDATE_IF_NOEXIST
const uint32_t flags = XDP_FLAGS_UPDATE_IF_NOEXIST;
TEST_NESTED_NLATTR_OBJECT(fd, nlh0, hdrlen,
init_ifinfomsg, print_ifinfomsg,
IFLA_XDP_FLAGS, pattern, flags,
printf("XDP_FLAGS_UPDATE_IF_NOEXIST"));
#endif
puts("+++ exited with 0 +++");
return 0;
}
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