1 /*- 2 * BSD LICENSE 3 * 4 * Copyright 2017 6WIND S.A. 5 * Copyright 2017 Mellanox. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 11 * * Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * * Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in 15 * the documentation and/or other materials provided with the 16 * distribution. 17 * * Neither the name of 6WIND S.A. nor the names of its 18 * contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 24 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 25 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 31 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 #ifndef _TAP_NETLINK_H_ 35 #define _TAP_NETLINK_H_ 36 37 #include <ctype.h> 38 #include <inttypes.h> 39 #include <linux/rtnetlink.h> 40 #include <linux/netlink.h> 41 #include <stdio.h> 42 43 #include <rte_log.h> 44 45 #define NLMSG_BUF 512 46 47 struct nlmsg { 48 struct nlmsghdr nh; 49 struct tcmsg t; 50 char buf[NLMSG_BUF]; 51 struct nested_tail *nested_tails; 52 }; 53 54 #define NLMSG_TAIL(nlh) (void *)((char *)(nlh) + NLMSG_ALIGN((nlh)->nlmsg_len)) 55 56 int nl_init(uint32_t nl_groups); 57 int nl_final(int nlsk_fd); 58 int nl_send(int nlsk_fd, struct nlmsghdr *nh); 59 int nl_recv(int nlsk_fd, int (*callback)(struct nlmsghdr *, void *), void *arg); 60 int nl_recv_ack(int nlsk_fd); 61 void nlattr_add(struct nlmsghdr *nh, unsigned short type, 62 unsigned int data_len, const void *data); 63 void nlattr_add8(struct nlmsghdr *nh, unsigned short type, uint8_t data); 64 void nlattr_add16(struct nlmsghdr *nh, unsigned short type, uint16_t data); 65 void nlattr_add32(struct nlmsghdr *nh, unsigned short type, uint32_t data); 66 int nlattr_nested_start(struct nlmsg *msg, uint16_t type); 67 void nlattr_nested_finish(struct nlmsg *msg); 68 69 #endif /* _TAP_NETLINK_H_ */ 70