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net: tc_act: add skbedit_ptype helper functions 

The tc_act header file contains an inline function that checks if an
action is changing the skb mark of a packet and a further function to
extract the mark.

Add similar functions to check for and get skbedit actions that modify
the packet type of the skb.

Signed-off-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
John Hurley 2019-08-04 16:09:03 +01:00 committed by David S. Miller
parent 55a47dc269
commit 77feb4eed7
1 changed files with 27 additions and 0 deletions
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27
include/net/tc_act/tc_skbedit.h
View File

@ -54,4 +54,31 @@ static inline u32 tcf_skbedit_mark(const struct tc_action *a)
return mark;
}
/* Return true iff action is ptype */
static inline bool is_tcf_skbedit_ptype(const struct tc_action *a)
{
#ifdef CONFIG_NET_CLS_ACT
u32 flags;
if (a->ops && a->ops->id == TCA_ID_SKBEDIT) {
rcu_read_lock();
flags = rcu_dereference(to_skbedit(a)->params)->flags;
rcu_read_unlock();
return flags == SKBEDIT_F_PTYPE;
}
#endif
return false;
}
static inline u32 tcf_skbedit_ptype(const struct tc_action *a)
{
u16 ptype;
rcu_read_lock();
ptype = rcu_dereference(to_skbedit(a)->params)->ptype;
rcu_read_unlock();
return ptype;
}
#endif /* __NET_TC_SKBEDIT_H */