File: libnl3_utils.h

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/*
 * Copyright (c) 2014, Cisco Systems, Inc. All rights reserved.
 * Copyright (c) 2017      Amazon.com, Inc. or its affiliates.
 *                         All Rights reserved.
 *
 * Portions of this software copied from libfabric
 * (https://github.com/ofiwg/libfabric)
 *
 * LICENSE_BEGIN
 *
 * BSD license:
 *
 *     Redistribution and use in source and binary forms, with or
 *     without modification, are permitted provided that the following
 *     conditions are met:
 *
 *      - Redistributions of source code must retain the above
 *        copyright notice, this list of conditions and the following
 *        disclaimer.
 *
 *      - 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "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
 * COPYRIGHT HOLDER OR CONTRIBUTORS 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.
 *
 * LICENSE_END
 */

#ifndef LIBNL3_UTILS_H
#define LIBNL3_UTILS_H

#include <linux/netlink.h>
#include <linux/rtnetlink.h>
#include <netlink/netlink.h>
#include <netlink/route/route.h>
#include <netlink/route/rtnl.h>

typedef struct nl_sock NL_HANDLE;

#define NLMSG_SIZE(size)     nlmsg_size(size)
#define NL_GETERROR(err)     nl_geterror(err)
#define NL_HANDLE_ALLOC      nl_socket_alloc
#define NL_HANDLE_FREE       nl_socket_free
#define NL_DISABLE_SEQ_CHECK nl_socket_disable_seq_check
#define INC_CB_MSGCNT(arg)

/* err will be returned as -NLE_AGAIN */
/* if the socket times out */
#define NL_RECVMSGS(nlh, cb_arg, rc, err, out)                                    \
    do {                                                                          \
        err = nl_recvmsgs_default(nlh);                                           \
        if (err < 0) {                                                            \
            opal_output(0, "Failed to receive netlink reply message, error %s\n", \
                        NL_GETERROR(err));                                        \
            if (err == -NLE_AGAIN)                                                \
                err = rc;                                                         \
            goto out;                                                             \
        }                                                                         \
    } while (0)

struct opal_reachable_netlink_rt_cb_arg {
    int oif;
    int found;
    int has_gateway;
    int replied;
    struct opal_reachable_netlink_sk *unlsk;
};

#endif /* LIBNL3_UTILS_H */