nhrpd/znl.h

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /* Netlink helpers for zbuf
   3  * Copyright (c) 2014-2015 Timo Teräs
   4  */
   5
   6 #include "zbuf.h"
   7
   8 #define ZNL_BUFFER_SIZE         8192
   9
  10 void *znl_push(struct zbuf *zb, size_t n);
  11 void *znl_pull(struct zbuf *zb, size_t n);
  12
  13 struct nlmsghdr *znl_nlmsg_push(struct zbuf *zb, uint16_t type, uint16_t flags);
  14 void znl_nlmsg_complete(struct zbuf *zb, struct nlmsghdr *n);
  15 struct nlmsghdr *znl_nlmsg_pull(struct zbuf *zb, struct zbuf *payload);
  16
  17 struct rtattr *znl_rta_push(struct zbuf *zb, uint16_t type, const void *val,
  18                             size_t len);
  19 struct rtattr *znl_rta_push_u32(struct zbuf *zb, uint16_t type, uint32_t val);
  20 struct rtattr *znl_rta_nested_push(struct zbuf *zb, uint16_t type);
  21 void znl_rta_nested_complete(struct zbuf *zb, struct rtattr *rta);
  22
  23 struct rtattr *znl_rta_pull(struct zbuf *zb, struct zbuf *payload);
  24
  25 int znl_open(int protocol, int groups);