include/net/tc_act/tc_skbedit.h

   1 /*
   2  * Copyright (c) 2008, Intel Corporation.
   3  *
   4  * This program is free software; you can redistribute it and/or modify it
   5  * under the terms and conditions of the GNU General Public License,
   6  * version 2, as published by the Free Software Foundation.
   7  *
   8  * This program is distributed in the hope it will be useful, but WITHOUT
   9  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  10  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  11  * more details.
  12  *
  13  * You should have received a copy of the GNU General Public License along with
  14  * this program; if not, see <http://www.gnu.org/licenses/>.
  15  *
  16  * Author: Alexander Duyck <alexander.h.duyck@intel.com>
  17  */
  18
  19 #ifndef __NET_TC_SKBEDIT_H
  20 #define __NET_TC_SKBEDIT_H
  21
  22 #include <net/act_api.h>
  23 #include <linux/tc_act/tc_skbedit.h>
  24
  25 struct tcf_skbedit_params {
  26         u32 flags;
  27         u32 priority;
  28         u32 mark;
  29         u32 mask;
  30         u16 queue_mapping;
  31         u16 ptype;
  32         struct rcu_head rcu;
  33 };
  34
  35 struct tcf_skbedit {
  36         struct tc_action common;
  37         struct tcf_skbedit_params __rcu *params;
  38 };
  39 #define to_skbedit(a) ((struct tcf_skbedit *)a)
  40
  41 /* Return true iff action is mark */
  42 static inline bool is_tcf_skbedit_mark(const struct tc_action *a)
  43 {
  44 #ifdef CONFIG_NET_CLS_ACT
  45         u32 flags;
  46
  47         if (a->ops && a->ops->type == TCA_ACT_SKBEDIT) {
  48                 rcu_read_lock();
  49                 flags = rcu_dereference(to_skbedit(a)->params)->flags;
  50                 rcu_read_unlock();
  51                 return flags == SKBEDIT_F_MARK;
  52         }
  53 #endif
  54         return false;
  55 }
  56
  57 static inline u32 tcf_skbedit_mark(const struct tc_action *a)
  58 {
  59         u32 mark;
  60
  61         rcu_read_lock();
  62         mark = rcu_dereference(to_skbedit(a)->params)->mark;
  63         rcu_read_unlock();
  64
  65         return mark;
  66 }
  67
  68 #endif /* __NET_TC_SKBEDIT_H */