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Linux/include/net/act_api.h

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Diff markup

Differences between /include/net/act_api.h (Architecture sparc) and /include/net/act_api.h (Architecture ppc)


  1 /* SPDX-License-Identifier: GPL-2.0 */              1 /* SPDX-License-Identifier: GPL-2.0 */
  2 #ifndef __NET_ACT_API_H                             2 #ifndef __NET_ACT_API_H
  3 #define __NET_ACT_API_H                             3 #define __NET_ACT_API_H
  4                                                     4 
  5 /*                                                  5 /*
  6  * Public action API for classifiers/qdiscs         6  * Public action API for classifiers/qdiscs
  7 */                                                  7 */
  8                                                     8 
  9 #include <linux/refcount.h>                         9 #include <linux/refcount.h>
 10 #include <net/sch_generic.h>                       10 #include <net/sch_generic.h>
 11 #include <net/pkt_sched.h>                         11 #include <net/pkt_sched.h>
 12 #include <net/net_namespace.h>                     12 #include <net/net_namespace.h>
 13 #include <net/netns/generic.h>                     13 #include <net/netns/generic.h>
 14                                                    14 
 15 struct tcf_idrinfo {                               15 struct tcf_idrinfo {
 16         struct mutex    lock;                      16         struct mutex    lock;
 17         struct idr      action_idr;                17         struct idr      action_idr;
 18         struct net      *net;                      18         struct net      *net;
 19 };                                                 19 };
 20                                                    20 
 21 struct tc_action_ops;                              21 struct tc_action_ops;
 22                                                    22 
 23 struct tc_action {                                 23 struct tc_action {
 24         const struct tc_action_ops      *ops;      24         const struct tc_action_ops      *ops;
 25         __u32                           type;      25         __u32                           type; /* for backward compat(TCA_OLD_COMPAT) */
 26         __u32                           order;     26         __u32                           order;
 27         struct tcf_idrinfo              *idrin     27         struct tcf_idrinfo              *idrinfo;
 28                                                    28 
 29         u32                             tcfa_i     29         u32                             tcfa_index;
 30         refcount_t                      tcfa_r     30         refcount_t                      tcfa_refcnt;
 31         atomic_t                        tcfa_b     31         atomic_t                        tcfa_bindcnt;
 32         int                             tcfa_a     32         int                             tcfa_action;
 33         struct tcf_t                    tcfa_t     33         struct tcf_t                    tcfa_tm;
 34         struct gnet_stats_basic_packed  tcfa_b     34         struct gnet_stats_basic_packed  tcfa_bstats;
 35         struct gnet_stats_basic_packed  tcfa_b     35         struct gnet_stats_basic_packed  tcfa_bstats_hw;
 36         struct gnet_stats_queue         tcfa_q     36         struct gnet_stats_queue         tcfa_qstats;
 37         struct net_rate_estimator __rcu *tcfa_     37         struct net_rate_estimator __rcu *tcfa_rate_est;
 38         spinlock_t                      tcfa_l     38         spinlock_t                      tcfa_lock;
 39         struct gnet_stats_basic_cpu __percpu *     39         struct gnet_stats_basic_cpu __percpu *cpu_bstats;
 40         struct gnet_stats_basic_cpu __percpu *     40         struct gnet_stats_basic_cpu __percpu *cpu_bstats_hw;
 41         struct gnet_stats_queue __percpu *cpu_     41         struct gnet_stats_queue __percpu *cpu_qstats;
 42         struct tc_cookie        __rcu *act_coo     42         struct tc_cookie        __rcu *act_cookie;
 43         struct tcf_chain        __rcu *goto_ch     43         struct tcf_chain        __rcu *goto_chain;
 44 };                                                 44 };
 45 #define tcf_index       common.tcfa_index          45 #define tcf_index       common.tcfa_index
 46 #define tcf_refcnt      common.tcfa_refcnt         46 #define tcf_refcnt      common.tcfa_refcnt
 47 #define tcf_bindcnt     common.tcfa_bindcnt        47 #define tcf_bindcnt     common.tcfa_bindcnt
 48 #define tcf_action      common.tcfa_action         48 #define tcf_action      common.tcfa_action
 49 #define tcf_tm          common.tcfa_tm             49 #define tcf_tm          common.tcfa_tm
 50 #define tcf_bstats      common.tcfa_bstats         50 #define tcf_bstats      common.tcfa_bstats
 51 #define tcf_qstats      common.tcfa_qstats         51 #define tcf_qstats      common.tcfa_qstats
 52 #define tcf_rate_est    common.tcfa_rate_est       52 #define tcf_rate_est    common.tcfa_rate_est
 53 #define tcf_lock        common.tcfa_lock           53 #define tcf_lock        common.tcfa_lock
 54                                                    54 
 55 /* Update lastuse only if needed, to avoid dir     55 /* Update lastuse only if needed, to avoid dirtying a cache line.
 56  * We use a temp variable to avoid fetching ji     56  * We use a temp variable to avoid fetching jiffies twice.
 57  */                                                57  */
 58 static inline void tcf_lastuse_update(struct t     58 static inline void tcf_lastuse_update(struct tcf_t *tm)
 59 {                                                  59 {
 60         unsigned long now = jiffies;               60         unsigned long now = jiffies;
 61                                                    61 
 62         if (tm->lastuse != now)                    62         if (tm->lastuse != now)
 63                 tm->lastuse = now;                 63                 tm->lastuse = now;
 64         if (unlikely(!tm->firstuse))               64         if (unlikely(!tm->firstuse))
 65                 tm->firstuse = now;                65                 tm->firstuse = now;
 66 }                                                  66 }
 67                                                    67 
 68 static inline void tcf_tm_dump(struct tcf_t *d     68 static inline void tcf_tm_dump(struct tcf_t *dtm, const struct tcf_t *stm)
 69 {                                                  69 {
 70         dtm->install = jiffies_to_clock_t(jiff     70         dtm->install = jiffies_to_clock_t(jiffies - stm->install);
 71         dtm->lastuse = jiffies_to_clock_t(jiff     71         dtm->lastuse = jiffies_to_clock_t(jiffies - stm->lastuse);
 72         dtm->firstuse = jiffies_to_clock_t(jif     72         dtm->firstuse = jiffies_to_clock_t(jiffies - stm->firstuse);
 73         dtm->expires = jiffies_to_clock_t(stm-     73         dtm->expires = jiffies_to_clock_t(stm->expires);
 74 }                                                  74 }
 75                                                    75 
 76 #ifdef CONFIG_NET_CLS_ACT                          76 #ifdef CONFIG_NET_CLS_ACT
 77                                                    77 
 78 #define ACT_P_CREATED 1                            78 #define ACT_P_CREATED 1
 79 #define ACT_P_DELETED 1                            79 #define ACT_P_DELETED 1
 80                                                    80 
 81 struct tc_action_ops {                             81 struct tc_action_ops {
 82         struct list_head head;                     82         struct list_head head;
 83         char    kind[IFNAMSIZ];                    83         char    kind[IFNAMSIZ];
 84         enum tca_id  id; /* identifier should      84         enum tca_id  id; /* identifier should match kind */
 85         size_t  size;                              85         size_t  size;
 86         struct module           *owner;            86         struct module           *owner;
 87         int     (*act)(struct sk_buff *, const     87         int     (*act)(struct sk_buff *, const struct tc_action *,
 88                        struct tcf_result *); /     88                        struct tcf_result *); /* called under RCU BH lock*/
 89         int     (*dump)(struct sk_buff *, stru     89         int     (*dump)(struct sk_buff *, struct tc_action *, int, int);
 90         void    (*cleanup)(struct tc_action *)     90         void    (*cleanup)(struct tc_action *);
 91         int     (*lookup)(struct net *net, str     91         int     (*lookup)(struct net *net, struct tc_action **a, u32 index);
 92         int     (*init)(struct net *net, struc     92         int     (*init)(struct net *net, struct nlattr *nla,
 93                         struct nlattr *est, st     93                         struct nlattr *est, struct tc_action **act, int ovr,
 94                         int bind, bool rtnl_he     94                         int bind, bool rtnl_held, struct tcf_proto *tp,
 95                         struct netlink_ext_ack     95                         struct netlink_ext_ack *extack);
 96         int     (*walk)(struct net *, struct s     96         int     (*walk)(struct net *, struct sk_buff *,
 97                         struct netlink_callbac     97                         struct netlink_callback *, int,
 98                         const struct tc_action     98                         const struct tc_action_ops *,
 99                         struct netlink_ext_ack     99                         struct netlink_ext_ack *);
100         void    (*stats_update)(struct tc_acti    100         void    (*stats_update)(struct tc_action *, u64, u32, u64, bool);
101         size_t  (*get_fill_size)(const struct     101         size_t  (*get_fill_size)(const struct tc_action *act);
102         struct net_device *(*get_dev)(const st    102         struct net_device *(*get_dev)(const struct tc_action *a);
103         void    (*put_dev)(struct net_device *    103         void    (*put_dev)(struct net_device *dev);
104 };                                                104 };
105                                                   105 
106 struct tc_action_net {                            106 struct tc_action_net {
107         struct tcf_idrinfo *idrinfo;              107         struct tcf_idrinfo *idrinfo;
108         const struct tc_action_ops *ops;          108         const struct tc_action_ops *ops;
109 };                                                109 };
110                                                   110 
111 static inline                                     111 static inline
112 int tc_action_net_init(struct net *net, struct    112 int tc_action_net_init(struct net *net, struct tc_action_net *tn,
113                        const struct tc_action_    113                        const struct tc_action_ops *ops)
114 {                                                 114 {
115         int err = 0;                              115         int err = 0;
116                                                   116 
117         tn->idrinfo = kmalloc(sizeof(*tn->idri    117         tn->idrinfo = kmalloc(sizeof(*tn->idrinfo), GFP_KERNEL);
118         if (!tn->idrinfo)                         118         if (!tn->idrinfo)
119                 return -ENOMEM;                   119                 return -ENOMEM;
120         tn->ops = ops;                            120         tn->ops = ops;
121         tn->idrinfo->net = net;                   121         tn->idrinfo->net = net;
122         mutex_init(&tn->idrinfo->lock);           122         mutex_init(&tn->idrinfo->lock);
123         idr_init(&tn->idrinfo->action_idr);       123         idr_init(&tn->idrinfo->action_idr);
124         return err;                               124         return err;
125 }                                                 125 }
126                                                   126 
127 void tcf_idrinfo_destroy(const struct tc_actio    127 void tcf_idrinfo_destroy(const struct tc_action_ops *ops,
128                          struct tcf_idrinfo *i    128                          struct tcf_idrinfo *idrinfo);
129                                                   129 
130 static inline void tc_action_net_exit(struct l    130 static inline void tc_action_net_exit(struct list_head *net_list,
131                                       unsigned    131                                       unsigned int id)
132 {                                                 132 {
133         struct net *net;                          133         struct net *net;
134                                                   134 
135         rtnl_lock();                              135         rtnl_lock();
136         list_for_each_entry(net, net_list, exi    136         list_for_each_entry(net, net_list, exit_list) {
137                 struct tc_action_net *tn = net    137                 struct tc_action_net *tn = net_generic(net, id);
138                                                   138 
139                 tcf_idrinfo_destroy(tn->ops, t    139                 tcf_idrinfo_destroy(tn->ops, tn->idrinfo);
140                 kfree(tn->idrinfo);               140                 kfree(tn->idrinfo);
141         }                                         141         }
142         rtnl_unlock();                            142         rtnl_unlock();
143 }                                                 143 }
144                                                   144 
145 int tcf_generic_walker(struct tc_action_net *t    145 int tcf_generic_walker(struct tc_action_net *tn, struct sk_buff *skb,
146                        struct netlink_callback    146                        struct netlink_callback *cb, int type,
147                        const struct tc_action_    147                        const struct tc_action_ops *ops,
148                        struct netlink_ext_ack     148                        struct netlink_ext_ack *extack);
149 int tcf_idr_search(struct tc_action_net *tn, s    149 int tcf_idr_search(struct tc_action_net *tn, struct tc_action **a, u32 index);
150 int tcf_idr_create(struct tc_action_net *tn, u    150 int tcf_idr_create(struct tc_action_net *tn, u32 index, struct nlattr *est,
151                    struct tc_action **a, const    151                    struct tc_action **a, const struct tc_action_ops *ops,
152                    int bind, bool cpustats);      152                    int bind, bool cpustats);
153 void tcf_idr_insert(struct tc_action_net *tn,     153 void tcf_idr_insert(struct tc_action_net *tn, struct tc_action *a);
154                                                   154 
155 void tcf_idr_cleanup(struct tc_action_net *tn,    155 void tcf_idr_cleanup(struct tc_action_net *tn, u32 index);
156 int tcf_idr_check_alloc(struct tc_action_net *    156 int tcf_idr_check_alloc(struct tc_action_net *tn, u32 *index,
157                         struct tc_action **a,     157                         struct tc_action **a, int bind);
158 int __tcf_idr_release(struct tc_action *a, boo    158 int __tcf_idr_release(struct tc_action *a, bool bind, bool strict);
159                                                   159 
160 static inline int tcf_idr_release(struct tc_ac    160 static inline int tcf_idr_release(struct tc_action *a, bool bind)
161 {                                                 161 {
162         return __tcf_idr_release(a, bind, fals    162         return __tcf_idr_release(a, bind, false);
163 }                                                 163 }
164                                                   164 
165 int tcf_register_action(struct tc_action_ops *    165 int tcf_register_action(struct tc_action_ops *a, struct pernet_operations *ops);
166 int tcf_unregister_action(struct tc_action_ops    166 int tcf_unregister_action(struct tc_action_ops *a,
167                           struct pernet_operat    167                           struct pernet_operations *ops);
168 int tcf_action_destroy(struct tc_action *actio    168 int tcf_action_destroy(struct tc_action *actions[], int bind);
169 int tcf_action_exec(struct sk_buff *skb, struc    169 int tcf_action_exec(struct sk_buff *skb, struct tc_action **actions,
170                     int nr_actions, struct tcf    170                     int nr_actions, struct tcf_result *res);
171 int tcf_action_init(struct net *net, struct tc    171 int tcf_action_init(struct net *net, struct tcf_proto *tp, struct nlattr *nla,
172                     struct nlattr *est, char *    172                     struct nlattr *est, char *name, int ovr, int bind,
173                     struct tc_action *actions[    173                     struct tc_action *actions[], size_t *attr_size,
174                     bool rtnl_held, struct net    174                     bool rtnl_held, struct netlink_ext_ack *extack);
175 struct tc_action *tcf_action_init_1(struct net    175 struct tc_action *tcf_action_init_1(struct net *net, struct tcf_proto *tp,
176                                     struct nla    176                                     struct nlattr *nla, struct nlattr *est,
177                                     char *name    177                                     char *name, int ovr, int bind,
178                                     bool rtnl_    178                                     bool rtnl_held,
179                                     struct net    179                                     struct netlink_ext_ack *extack);
180 int tcf_action_dump(struct sk_buff *skb, struc    180 int tcf_action_dump(struct sk_buff *skb, struct tc_action *actions[], int bind,
181                     int ref);                     181                     int ref);
182 int tcf_action_dump_old(struct sk_buff *skb, s    182 int tcf_action_dump_old(struct sk_buff *skb, struct tc_action *a, int, int);
183 int tcf_action_dump_1(struct sk_buff *skb, str    183 int tcf_action_dump_1(struct sk_buff *skb, struct tc_action *a, int, int);
184 int tcf_action_copy_stats(struct sk_buff *, st    184 int tcf_action_copy_stats(struct sk_buff *, struct tc_action *, int);
185                                                   185 
186 int tcf_action_check_ctrlact(int action, struc    186 int tcf_action_check_ctrlact(int action, struct tcf_proto *tp,
187                              struct tcf_chain     187                              struct tcf_chain **handle,
188                              struct netlink_ex    188                              struct netlink_ext_ack *newchain);
189 struct tcf_chain *tcf_action_set_ctrlact(struc    189 struct tcf_chain *tcf_action_set_ctrlact(struct tc_action *a, int action,
190                                          struc    190                                          struct tcf_chain *newchain);
191 #endif /* CONFIG_NET_CLS_ACT */                   191 #endif /* CONFIG_NET_CLS_ACT */
192                                                   192 
193 static inline void tcf_action_stats_update(str    193 static inline void tcf_action_stats_update(struct tc_action *a, u64 bytes,
194                                            u64    194                                            u64 packets, u64 lastuse, bool hw)
195 {                                                 195 {
196 #ifdef CONFIG_NET_CLS_ACT                         196 #ifdef CONFIG_NET_CLS_ACT
197         if (!a->ops->stats_update)                197         if (!a->ops->stats_update)
198                 return;                           198                 return;
199                                                   199 
200         a->ops->stats_update(a, bytes, packets    200         a->ops->stats_update(a, bytes, packets, lastuse, hw);
201 #endif                                            201 #endif
202 }                                                 202 }
203                                                   203 
204                                                   204 
205 #endif                                            205 #endif
206                                                   206 

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