diff options
author | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-12-16 14:55:49 -0300 |
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committer | André Fabian Silva Delgado <emulatorman@parabola.nu> | 2015-12-16 14:55:49 -0300 |
commit | f3a16ba6a1152b8966dcadc668af4cf00623c7b1 (patch) | |
tree | 5fee49a027f6fddf70b29369d24703946370eb77 /include/net/ipv6.h | |
parent | b652965369918b9d992dc42fb060240f94d98769 (diff) |
Linux-libre 4.3.3-gnu
Diffstat (limited to 'include/net/ipv6.h')
-rw-r--r-- | include/net/ipv6.h | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/include/net/ipv6.h b/include/net/ipv6.h index 711cca428..b14e1581c 100644 --- a/include/net/ipv6.h +++ b/include/net/ipv6.h @@ -205,6 +205,7 @@ extern rwlock_t ip6_ra_lock; */ struct ipv6_txoptions { + atomic_t refcnt; /* Length of this structure */ int tot_len; @@ -217,7 +218,7 @@ struct ipv6_txoptions { struct ipv6_opt_hdr *dst0opt; struct ipv6_rt_hdr *srcrt; /* Routing Header */ struct ipv6_opt_hdr *dst1opt; - + struct rcu_head rcu; /* Option buffer, as read by IPV6_PKTOPTIONS, starts here. */ }; @@ -252,6 +253,24 @@ struct ipv6_fl_socklist { struct rcu_head rcu; }; +static inline struct ipv6_txoptions *txopt_get(const struct ipv6_pinfo *np) +{ + struct ipv6_txoptions *opt; + + rcu_read_lock(); + opt = rcu_dereference(np->opt); + if (opt && !atomic_inc_not_zero(&opt->refcnt)) + opt = NULL; + rcu_read_unlock(); + return opt; +} + +static inline void txopt_put(struct ipv6_txoptions *opt) +{ + if (opt && atomic_dec_and_test(&opt->refcnt)) + kfree_rcu(opt, rcu); +} + struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk, __be32 label); struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions *opt_space, struct ip6_flowlabel *fl, @@ -490,6 +509,7 @@ struct ip6_create_arg { u32 user; const struct in6_addr *src; const struct in6_addr *dst; + int iif; u8 ecn; }; |