zebra/tc_netlink.h

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*
   3  * Zebra Traffic Control (TC) interaction with the kernel using netlink.
   4  *
   5  * Copyright (C) 2022 Shichu Yang
   6  */
   7
   8 #ifndef _ZEBRA_TC_NETLINK_H
   9 #define _ZEBRA_TC_NETLINK_H
  10
  11 #ifdef HAVE_NETLINK
  12
  13 #ifdef __cplusplus
  14 extern "C" {
  15 #endif
  16
  17 /* Represent a prefixed address in flower filter */
  18
  19 struct inet_prefix {
  20         uint16_t flags;
  21         uint16_t bytelen;
  22         uint16_t bitlen;
  23         uint16_t family;
  24         uint32_t data[64];
  25 };
  26
  27 enum {
  28         PREFIXLEN_SPECIFIED = (1 << 0),
  29         ADDRTYPE_INET = (1 << 1),
  30         ADDRTYPE_UNSPEC = (1 << 2),
  31         ADDRTYPE_MULTI = (1 << 3),
  32
  33         ADDRTYPE_INET_UNSPEC = ADDRTYPE_INET | ADDRTYPE_UNSPEC,
  34         ADDRTYPE_INET_MULTI = ADDRTYPE_INET | ADDRTYPE_MULTI
  35 };
  36
  37 extern enum netlink_msg_status
  38 netlink_put_tc_qdisc_update_msg(struct nl_batch *bth,
  39                                 struct zebra_dplane_ctx *ctx);
  40 extern enum netlink_msg_status
  41 netlink_put_tc_class_update_msg(struct nl_batch *bth,
  42                                 struct zebra_dplane_ctx *ctx);
  43 extern enum netlink_msg_status
  44 netlink_put_tc_filter_update_msg(struct nl_batch *bth,
  45                                  struct zebra_dplane_ctx *ctx);
  46
  47 /**
  48  * "filter" & "class" in the following become "tfilter" & "tclass" for
  49  * the sake of consistency with kernel message types (RTM_NEWTFILTER etc.)
  50  */
  51
  52 extern int netlink_qdisc_read(struct zebra_ns *zns);
  53 extern int netlink_tfilter_read_for_interface(struct zebra_ns *zns,
  54                                               ifindex_t ifindex);
  55
  56 extern int netlink_tfilter_change(struct nlmsghdr *h, ns_id_t ns_id,
  57                                   int startup);
  58 extern int netlink_tclass_change(struct nlmsghdr *h, ns_id_t ns_id,
  59                                  int startup);
  60 extern int netlink_qdisc_change(struct nlmsghdr *h, ns_id_t ns_id, int startup);
  61
  62
  63 #ifdef __cplusplus
  64 }
  65 #endif
  66
  67 #endif /* HAVE_NETLINK */
  68
  69 #endif /* _ZEBRA_TC_NETLINK_H */