diff options
Diffstat (limited to 'include/net')
| -rw-r--r-- | include/net/act_api.h | 4 | ||||
| -rw-r--r-- | include/net/pkt_cls.h | 24 |
2 files changed, 25 insertions, 3 deletions
diff --git a/include/net/act_api.h b/include/net/act_api.h index 1e6df0eb058f..a10a3b1813f3 100644 --- a/include/net/act_api.h +++ b/include/net/act_api.h @@ -14,7 +14,6 @@ struct tcf_idrinfo { spinlock_t lock; struct idr action_idr; - struct net *net; }; struct tc_action_ops; @@ -106,7 +105,7 @@ struct tc_action_net { static inline int tc_action_net_init(struct tc_action_net *tn, - const struct tc_action_ops *ops, struct net *net) + const struct tc_action_ops *ops) { int err = 0; @@ -114,7 +113,6 @@ int tc_action_net_init(struct tc_action_net *tn, if (!tn->idrinfo) return -ENOMEM; tn->ops = ops; - tn->idrinfo->net = net; spin_lock_init(&tn->idrinfo->lock); idr_init(&tn->idrinfo->action_idr); return err; diff --git a/include/net/pkt_cls.h b/include/net/pkt_cls.h index 70ca2437740e..8826747ef83e 100644 --- a/include/net/pkt_cls.h +++ b/include/net/pkt_cls.h @@ -94,6 +94,7 @@ struct tcf_exts { __u32 type; /* for backward compat(TCA_OLD_COMPAT) */ int nr_actions; struct tc_action **actions; + struct net *net; #endif /* Map to export classifier specific extension TLV types to the * generic extensions API. Unsupported extensions must be set to 0. @@ -107,6 +108,7 @@ static inline int tcf_exts_init(struct tcf_exts *exts, int action, int police) #ifdef CONFIG_NET_CLS_ACT exts->type = 0; exts->nr_actions = 0; + exts->net = NULL; exts->actions = kcalloc(TCA_ACT_MAX_PRIO, sizeof(struct tc_action *), GFP_KERNEL); if (!exts->actions) @@ -117,6 +119,28 @@ static inline int tcf_exts_init(struct tcf_exts *exts, int action, int police) return 0; } +/* Return false if the netns is being destroyed in cleanup_net(). Callers + * need to do cleanup synchronously in this case, otherwise may race with + * tc_action_net_exit(). Return true for other cases. + */ +static inline bool tcf_exts_get_net(struct tcf_exts *exts) +{ +#ifdef CONFIG_NET_CLS_ACT + exts->net = maybe_get_net(exts->net); + return exts->net != NULL; +#else + return true; +#endif +} + +static inline void tcf_exts_put_net(struct tcf_exts *exts) +{ +#ifdef CONFIG_NET_CLS_ACT + if (exts->net) + put_net(exts->net); +#endif +} + static inline void tcf_exts_to_list(const struct tcf_exts *exts, struct list_head *actions) { |