include/net/tc_act/tc_csum.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __NET_TC_CSUM_H
   3 #define __NET_TC_CSUM_H
   4
   5 #include <linux/types.h>
   6 #include <net/act_api.h>
   7 #include <linux/tc_act/tc_csum.h>
   8
   9 struct tcf_csum_params {
  10         u32 update_flags;
  11         struct rcu_head rcu;
  12 };
  13
  14 struct tcf_csum {
  15         struct tc_action common;
  16
  17         struct tcf_csum_params __rcu *params;
  18 };
  19 #define to_tcf_csum(a) ((struct tcf_csum *)a)
  20
  21 static inline bool is_tcf_csum(const struct tc_action *a)
  22 {
  23 #ifdef CONFIG_NET_CLS_ACT
  24         if (a->ops && a->ops->type == TCA_ACT_CSUM)
  25                 return true;
  26 #endif
  27         return false;
  28 }
  29
  30 static inline u32 tcf_csum_update_flags(const struct tc_action *a)
  31 {
  32         u32 update_flags;
  33
  34         rcu_read_lock();
  35         update_flags = rcu_dereference(to_tcf_csum(a)->params)->update_flags;
  36         rcu_read_unlock();
  37
  38         return update_flags;
  39 }
  40
  41 #endif /* __NET_TC_CSUM_H */