mirror of
https://github.com/torvalds/linux.git
synced 2024-11-17 09:31:50 +00:00
762f926d6f
Currently, tcf_ct_flow_table_restore_skb is exported by act_ct
module, therefore modules using it will have hard-dependency
on act_ct and will require loading it all the time.
This can lead to an unnecessary overhead on systems that do not
use hardware connection tracking action (ct_metadata action) in
the first place.
To relax the hard-dependency between the modules, we unexport this
function and make it a static inline one.
Fixes: 30b0cf90c6 ("net/sched: act_ct: Support restoring conntrack info on skbs")
Signed-off-by: Alaa Hleihel <alaa@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
94 lines
2.1 KiB
C
94 lines
2.1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
#ifndef __NET_TC_CT_H
|
|
#define __NET_TC_CT_H
|
|
|
|
#include <net/act_api.h>
|
|
#include <uapi/linux/tc_act/tc_ct.h>
|
|
|
|
#if IS_ENABLED(CONFIG_NF_CONNTRACK)
|
|
#include <net/netfilter/nf_nat.h>
|
|
#include <net/netfilter/nf_conntrack_labels.h>
|
|
|
|
struct tcf_ct_params {
|
|
struct nf_conn *tmpl;
|
|
u16 zone;
|
|
|
|
u32 mark;
|
|
u32 mark_mask;
|
|
|
|
u32 labels[NF_CT_LABELS_MAX_SIZE / sizeof(u32)];
|
|
u32 labels_mask[NF_CT_LABELS_MAX_SIZE / sizeof(u32)];
|
|
|
|
struct nf_nat_range2 range;
|
|
bool ipv4_range;
|
|
|
|
u16 ct_action;
|
|
|
|
struct rcu_head rcu;
|
|
|
|
struct tcf_ct_flow_table *ct_ft;
|
|
struct nf_flowtable *nf_ft;
|
|
};
|
|
|
|
struct tcf_ct {
|
|
struct tc_action common;
|
|
struct tcf_ct_params __rcu *params;
|
|
};
|
|
|
|
#define to_ct(a) ((struct tcf_ct *)a)
|
|
#define to_ct_params(a) \
|
|
((struct tcf_ct_params *) \
|
|
rcu_dereference_protected(to_ct(a)->params, \
|
|
lockdep_is_held(&a->tcfa_lock)))
|
|
|
|
static inline uint16_t tcf_ct_zone(const struct tc_action *a)
|
|
{
|
|
return to_ct_params(a)->zone;
|
|
}
|
|
|
|
static inline int tcf_ct_action(const struct tc_action *a)
|
|
{
|
|
return to_ct_params(a)->ct_action;
|
|
}
|
|
|
|
static inline struct nf_flowtable *tcf_ct_ft(const struct tc_action *a)
|
|
{
|
|
return to_ct_params(a)->nf_ft;
|
|
}
|
|
|
|
#else
|
|
static inline uint16_t tcf_ct_zone(const struct tc_action *a) { return 0; }
|
|
static inline int tcf_ct_action(const struct tc_action *a) { return 0; }
|
|
static inline struct nf_flowtable *tcf_ct_ft(const struct tc_action *a)
|
|
{
|
|
return NULL;
|
|
}
|
|
#endif /* CONFIG_NF_CONNTRACK */
|
|
|
|
#if IS_ENABLED(CONFIG_NET_ACT_CT)
|
|
static inline void
|
|
tcf_ct_flow_table_restore_skb(struct sk_buff *skb, unsigned long cookie)
|
|
{
|
|
enum ip_conntrack_info ctinfo = cookie & NFCT_INFOMASK;
|
|
struct nf_conn *ct;
|
|
|
|
ct = (struct nf_conn *)(cookie & NFCT_PTRMASK);
|
|
nf_conntrack_get(&ct->ct_general);
|
|
nf_ct_set(skb, ct, ctinfo);
|
|
}
|
|
#else
|
|
static inline void
|
|
tcf_ct_flow_table_restore_skb(struct sk_buff *skb, unsigned long cookie) { }
|
|
#endif
|
|
|
|
static inline bool is_tcf_ct(const struct tc_action *a)
|
|
{
|
|
#if defined(CONFIG_NET_CLS_ACT) && IS_ENABLED(CONFIG_NF_CONNTRACK)
|
|
if (a->ops && a->ops->id == TCA_ID_CT)
|
|
return true;
|
|
#endif
|
|
return false;
|
|
}
|
|
|
|
#endif /* __NET_TC_CT_H */
|