diff options
Diffstat (limited to 'include/net/sctp/sctp.h')
| -rw-r--r-- | include/net/sctp/sctp.h | 273 |
1 files changed, 82 insertions, 191 deletions
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h index 505845ddb0b..8e4de46c052 100644 --- a/include/net/sctp/sctp.h +++ b/include/net/sctp/sctp.h @@ -21,16 +21,12 @@ * See the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License - * along with GNU CC; see the file COPYING. If not, write to - * the Free Software Foundation, 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. + * along with GNU CC; see the file COPYING. If not, see + * <http://www.gnu.org/licenses/>. * * Please send any bug reports or fixes you make to the * email address(es): - * lksctp developers <lksctp-developers@lists.sourceforge.net> - * - * Or submit a bug report through the following website: - * http://www.sf.net/projects/lksctp + * lksctp developers <linux-sctp@vger.kernel.org> * * Written or modified by: * La Monte H.P. Yarroll <piggy@acm.org> @@ -41,9 +37,6 @@ * Ardelle Fan <ardelle.fan@intel.com> * Ryan Layer <rmlayer@us.ibm.com> * Kevin Gao <kevin.gao@intel.com> - * - * Any bugs reported given to us we will try to fix... any fixes shared will - * be incorporated into the next SCTP release. */ #ifndef __net_sctp_h__ @@ -71,7 +64,7 @@ #include <linux/jiffies.h> #include <linux/idr.h> -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +#if IS_ENABLED(CONFIG_IPV6) #include <net/ipv6.h> #include <net/ip6_route.h> #endif @@ -83,30 +76,12 @@ #include <net/sctp/structs.h> #include <net/sctp/constants.h> - -/* Set SCTP_DEBUG flag via config if not already set. */ -#ifndef SCTP_DEBUG -#ifdef CONFIG_SCTP_DBG_MSG -#define SCTP_DEBUG 1 -#else -#define SCTP_DEBUG 0 -#endif /* CONFIG_SCTP_DBG */ -#endif /* SCTP_DEBUG */ - #ifdef CONFIG_IP_SCTP_MODULE #define SCTP_PROTOSW_FLAG 0 #else /* static! */ #define SCTP_PROTOSW_FLAG INET_PROTOSW_PERMANENT #endif - -/* Certain internal static functions need to be exported when - * compiled into the test frame. - */ -#ifndef SCTP_STATIC -#define SCTP_STATIC static -#endif - /* * Function declarations. */ @@ -114,13 +89,11 @@ /* * sctp/protocol.c */ -extern struct sock *sctp_get_ctl_sock(void); -extern void sctp_local_addr_free(struct rcu_head *head); -extern int sctp_copy_local_addr_list(struct sctp_bind_addr *, - sctp_scope_t, gfp_t gfp, - int flags); -extern struct sctp_pf *sctp_get_pf_specific(sa_family_t family); -extern int sctp_register_pf(struct sctp_pf *, sa_family_t); +int sctp_copy_local_addr_list(struct net *, struct sctp_bind_addr *, + sctp_scope_t, gfp_t gfp, int flags); +struct sctp_pf *sctp_get_pf_specific(sa_family_t family); +int sctp_register_pf(struct sctp_pf *, sa_family_t); +void sctp_addr_wq_mgmt(struct net *, struct sctp_sockaddr_entry *, int); /* * sctp/socket.c @@ -128,23 +101,24 @@ extern int sctp_register_pf(struct sctp_pf *, sa_family_t); int sctp_backlog_rcv(struct sock *sk, struct sk_buff *skb); int sctp_inet_listen(struct socket *sock, int backlog); void sctp_write_space(struct sock *sk); -void sctp_data_ready(struct sock *sk, int len); +void sctp_data_ready(struct sock *sk); unsigned int sctp_poll(struct file *file, struct socket *sock, poll_table *wait); void sctp_sock_rfree(struct sk_buff *skb); void sctp_copy_sock(struct sock *newsk, struct sock *sk, struct sctp_association *asoc); extern struct percpu_counter sctp_sockets_allocated; +int sctp_asconf_mgmt(struct sctp_sock *, struct sctp_sockaddr_entry *); /* * sctp/primitive.c */ -int sctp_primitive_ASSOCIATE(struct sctp_association *, void *arg); -int sctp_primitive_SHUTDOWN(struct sctp_association *, void *arg); -int sctp_primitive_ABORT(struct sctp_association *, void *arg); -int sctp_primitive_SEND(struct sctp_association *, void *arg); -int sctp_primitive_REQUESTHEARTBEAT(struct sctp_association *, void *arg); -int sctp_primitive_ASCONF(struct sctp_association *, void *arg); +int sctp_primitive_ASSOCIATE(struct net *, struct sctp_association *, void *arg); +int sctp_primitive_SHUTDOWN(struct net *, struct sctp_association *, void *arg); +int sctp_primitive_ABORT(struct net *, struct sctp_association *, void *arg); +int sctp_primitive_SEND(struct net *, struct sctp_association *, void *arg); +int sctp_primitive_REQUESTHEARTBEAT(struct net *, struct sctp_association *, void *arg); +int sctp_primitive_ASCONF(struct net *, struct sctp_association *, void *arg); /* * sctp/input.c @@ -155,12 +129,14 @@ void sctp_hash_established(struct sctp_association *); void sctp_unhash_established(struct sctp_association *); void sctp_hash_endpoint(struct sctp_endpoint *); void sctp_unhash_endpoint(struct sctp_endpoint *); -struct sock *sctp_err_lookup(int family, struct sk_buff *, +struct sock *sctp_err_lookup(struct net *net, int family, struct sk_buff *, struct sctphdr *, struct sctp_association **, struct sctp_transport **); void sctp_err_finish(struct sock *, struct sctp_association *); void sctp_icmp_frag_needed(struct sock *, struct sctp_association *, struct sctp_transport *t, __u32 pmtu); +void sctp_icmp_redirect(struct sock *, struct sctp_transport *, + struct sk_buff *); void sctp_icmp_proto_unreachable(struct sock *sk, struct sctp_association *asoc, struct sctp_transport *t); @@ -170,14 +146,14 @@ void sctp_backlog_migrate(struct sctp_association *assoc, /* * sctp/proc.c */ -int sctp_snmp_proc_init(void); -void sctp_snmp_proc_exit(void); -int sctp_eps_proc_init(void); -void sctp_eps_proc_exit(void); -int sctp_assocs_proc_init(void); -void sctp_assocs_proc_exit(void); -int sctp_remaddr_proc_init(void); -void sctp_remaddr_proc_exit(void); +int sctp_snmp_proc_init(struct net *net); +void sctp_snmp_proc_exit(struct net *net); +int sctp_eps_proc_init(struct net *net); +void sctp_eps_proc_exit(struct net *net); +int sctp_assocs_proc_init(struct net *net); +void sctp_assocs_proc_exit(struct net *net); +int sctp_remaddr_proc_init(struct net *net); +void sctp_remaddr_proc_exit(struct net *net); /* @@ -194,38 +170,11 @@ extern struct kmem_cache *sctp_bucket_cachep __read_mostly; * Section: Macros, externs, and inlines */ - -#ifdef TEST_FRAME -#include <test_frame.h> -#else - -/* spin lock wrappers. */ -#define sctp_spin_lock_irqsave(lock, flags) spin_lock_irqsave(lock, flags) -#define sctp_spin_unlock_irqrestore(lock, flags) \ - spin_unlock_irqrestore(lock, flags) -#define sctp_local_bh_disable() local_bh_disable() -#define sctp_local_bh_enable() local_bh_enable() -#define sctp_spin_lock(lock) spin_lock(lock) -#define sctp_spin_unlock(lock) spin_unlock(lock) -#define sctp_write_lock(lock) write_lock(lock) -#define sctp_write_unlock(lock) write_unlock(lock) -#define sctp_read_lock(lock) read_lock(lock) -#define sctp_read_unlock(lock) read_unlock(lock) - -/* sock lock wrappers. */ -#define sctp_lock_sock(sk) lock_sock(sk) -#define sctp_release_sock(sk) release_sock(sk) -#define sctp_bh_lock_sock(sk) bh_lock_sock(sk) -#define sctp_bh_unlock_sock(sk) bh_unlock_sock(sk) - /* SCTP SNMP MIB stats handlers */ -DECLARE_SNMP_STAT(struct sctp_mib, sctp_statistics); -#define SCTP_INC_STATS(field) SNMP_INC_STATS(sctp_statistics, field) -#define SCTP_INC_STATS_BH(field) SNMP_INC_STATS_BH(sctp_statistics, field) -#define SCTP_INC_STATS_USER(field) SNMP_INC_STATS_USER(sctp_statistics, field) -#define SCTP_DEC_STATS(field) SNMP_DEC_STATS(sctp_statistics, field) - -#endif /* !TEST_FRAME */ +#define SCTP_INC_STATS(net, field) SNMP_INC_STATS((net)->sctp.sctp_statistics, field) +#define SCTP_INC_STATS_BH(net, field) SNMP_INC_STATS_BH((net)->sctp.sctp_statistics, field) +#define SCTP_INC_STATS_USER(net, field) SNMP_INC_STATS_USER((net)->sctp.sctp_statistics, field) +#define SCTP_DEC_STATS(net, field) SNMP_DEC_STATS((net)->sctp.sctp_statistics, field) /* sctp mib definitions */ enum { @@ -271,60 +220,18 @@ struct sctp_mib { unsigned long mibs[SCTP_MIB_MAX]; }; - -/* Print debugging messages. */ -#if SCTP_DEBUG -extern int sctp_debug_flag; -#define SCTP_DEBUG_PRINTK(fmt, args...) \ -do { \ - if (sctp_debug_flag) \ - printk(KERN_DEBUG pr_fmt(fmt), ##args); \ -} while (0) -#define SCTP_DEBUG_PRINTK_CONT(fmt, args...) \ -do { \ - if (sctp_debug_flag) \ - pr_cont(fmt, ##args); \ -} while (0) -#define SCTP_DEBUG_PRINTK_IPADDR(fmt_lead, fmt_trail, \ - args_lead, saddr, args_trail...) \ -do { \ - if (sctp_debug_flag) { \ - if (saddr->sa.sa_family == AF_INET6) { \ - printk(KERN_DEBUG \ - pr_fmt(fmt_lead "%pI6" fmt_trail), \ - args_lead, \ - &saddr->v6.sin6_addr, \ - args_trail); \ - } else { \ - printk(KERN_DEBUG \ - pr_fmt(fmt_lead "%pI4" fmt_trail), \ - args_lead, \ - &saddr->v4.sin_addr.s_addr, \ - args_trail); \ - } \ - } \ -} while (0) -#define SCTP_ENABLE_DEBUG { sctp_debug_flag = 1; } -#define SCTP_DISABLE_DEBUG { sctp_debug_flag = 0; } - -#define SCTP_ASSERT(expr, str, func) \ - if (!(expr)) { \ - SCTP_DEBUG_PRINTK("Assertion Failed: %s(%s) at %s:%s:%d\n", \ - str, (#expr), __FILE__, __func__, __LINE__); \ - func; \ +/* helper function to track stats about max rto and related transport */ +static inline void sctp_max_rto(struct sctp_association *asoc, + struct sctp_transport *trans) +{ + if (asoc->stats.max_obs_rto < (__u64)trans->rto) { + asoc->stats.max_obs_rto = trans->rto; + memset(&asoc->stats.obs_rto_ipaddr, 0, + sizeof(struct sockaddr_storage)); + memcpy(&asoc->stats.obs_rto_ipaddr, &trans->ipaddr, + trans->af_specific->sockaddr_len); } - -#else /* SCTP_DEBUG */ - -#define SCTP_DEBUG_PRINTK(whatever...) -#define SCTP_DEBUG_PRINTK_CONT(fmt, args...) -#define SCTP_DEBUG_PRINTK_IPADDR(whatever...) -#define SCTP_ENABLE_DEBUG -#define SCTP_DISABLE_DEBUG -#define SCTP_ASSERT(expr, str, func) - -#endif /* SCTP_DEBUG */ - +} /* * Macros for keeping a global reference of object allocations. @@ -357,31 +264,35 @@ atomic_t sctp_dbg_objcnt_## name = ATOMIC_INIT(0) #define SCTP_DBG_OBJCNT_ENTRY(name) \ {.label= #name, .counter= &sctp_dbg_objcnt_## name} -void sctp_dbg_objcnt_init(void); -void sctp_dbg_objcnt_exit(void); +void sctp_dbg_objcnt_init(struct net *); +void sctp_dbg_objcnt_exit(struct net *); #else #define SCTP_DBG_OBJCNT_INC(name) #define SCTP_DBG_OBJCNT_DEC(name) -static inline void sctp_dbg_objcnt_init(void) { return; } -static inline void sctp_dbg_objcnt_exit(void) { return; } +static inline void sctp_dbg_objcnt_init(struct net *net) { return; } +static inline void sctp_dbg_objcnt_exit(struct net *net) { return; } #endif /* CONFIG_SCTP_DBG_OBJCOUNT */ #if defined CONFIG_SYSCTL void sctp_sysctl_register(void); void sctp_sysctl_unregister(void); +int sctp_sysctl_net_register(struct net *net); +void sctp_sysctl_net_unregister(struct net *net); #else static inline void sctp_sysctl_register(void) { return; } static inline void sctp_sysctl_unregister(void) { return; } +static inline int sctp_sysctl_net_register(struct net *net) { return 0; } +static inline void sctp_sysctl_net_unregister(struct net *net) { return; } #endif /* Size of Supported Address Parameter for 'x' address types. */ #define SCTP_SAT_LEN(x) (sizeof(struct sctp_paramhdr) + (x) * sizeof(__u16)) -#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE) +#if IS_ENABLED(CONFIG_IPV6) void sctp_v6_pf_init(void); void sctp_v6_pf_exit(void); @@ -411,6 +322,7 @@ static inline sctp_assoc_t sctp_assoc2id(const struct sctp_association *asoc) /* Look up the association by its id. */ struct sctp_association *sctp_id2assoc(struct sock *sk, sctp_assoc_t id); +int sctp_do_peeloff(struct sock *sk, sctp_assoc_t id, struct socket **sockp); /* A macro to walk a list of skbs. */ #define sctp_skb_for_each(pos, head, tmp) \ @@ -422,13 +334,13 @@ static inline void sctp_skb_list_tail(struct sk_buff_head *list, { unsigned long flags; - sctp_spin_lock_irqsave(&head->lock, flags); - sctp_spin_lock(&list->lock); + spin_lock_irqsave(&head->lock, flags); + spin_lock(&list->lock); skb_queue_splice_tail_init(list, head); - sctp_spin_unlock(&list->lock); - sctp_spin_unlock_irqrestore(&head->lock, flags); + spin_unlock(&list->lock); + spin_unlock_irqrestore(&head->lock, flags); } /** @@ -514,10 +426,10 @@ static inline int sctp_frag_point(const struct sctp_association *asoc, int pmtu) return frag; } -static inline void sctp_assoc_pending_pmtu(struct sctp_association *asoc) +static inline void sctp_assoc_pending_pmtu(struct sock *sk, struct sctp_association *asoc) { - sctp_assoc_sync_pmtu(asoc); + sctp_assoc_sync_pmtu(sk, asoc); asoc->pmtu_pending = 0; } @@ -531,7 +443,6 @@ _sctp_walk_params((pos), (chunk), ntohs((chunk)->chunk_hdr.length), member) #define _sctp_walk_params(pos, chunk, end, member)\ for (pos.v = chunk->member;\ - pos.v <= (void *)chunk + end - sizeof(sctp_paramhdr_t) &&\ pos.v <= (void *)chunk + end - ntohs(pos.p->length) &&\ ntohs(pos.p->length) >= sizeof(sctp_paramhdr_t);\ pos.v += WORD_ROUND(ntohs(pos.p->length))) @@ -542,7 +453,6 @@ _sctp_walk_errors((err), (chunk_hdr), ntohs((chunk_hdr)->length)) #define _sctp_walk_errors(err, chunk_hdr, end)\ for (err = (sctp_errhdr_t *)((void *)chunk_hdr + \ sizeof(sctp_chunkhdr_t));\ - (void *)err <= (void *)chunk_hdr + end - sizeof(sctp_errhdr_t) &&\ (void *)err <= (void *)chunk_hdr + end - ntohs(err->length) &&\ ntohs(err->length) >= sizeof(sctp_errhdr_t); \ err = (sctp_errhdr_t *)((void *)err + WORD_ROUND(ntohs(err->length)))) @@ -558,32 +468,10 @@ for (pos = chunk->subh.fwdtsn_hdr->skip;\ /* Round an int up to the next multiple of 4. */ #define WORD_ROUND(s) (((s)+3)&~3) -/* Make a new instance of type. */ -#define t_new(type, flags) (type *)kzalloc(sizeof(type), flags) - -/* Compare two timevals. */ -#define tv_lt(s, t) \ - (s.tv_sec < t.tv_sec || (s.tv_sec == t.tv_sec && s.tv_usec < t.tv_usec)) - -/* Add tv1 to tv2. */ -#define TIMEVAL_ADD(tv1, tv2) \ -({ \ - suseconds_t usecs = (tv2).tv_usec + (tv1).tv_usec; \ - time_t secs = (tv2).tv_sec + (tv1).tv_sec; \ -\ - if (usecs >= 1000000) { \ - usecs -= 1000000; \ - secs++; \ - } \ - (tv2).tv_sec = secs; \ - (tv2).tv_usec = usecs; \ -}) - /* External references. */ extern struct proto sctp_prot; extern struct proto sctpv6_prot; -extern struct proc_dir_entry *proc_net_sctp; void sctp_put_port(struct sock *sk); extern struct idr sctp_assocs_id; @@ -601,7 +489,7 @@ static inline int ipver2af(__u8 ipver) return AF_INET6; default: return 0; - }; + } } /* Convert from an address parameter type to an address family. */ @@ -614,36 +502,26 @@ static inline int param_type2af(__be16 type) return AF_INET6; default: return 0; - }; -} - -/* Perform some sanity checks. */ -static inline int sctp_sanity_check(void) -{ - SCTP_ASSERT(sizeof(struct sctp_ulpevent) <= - sizeof(((struct sk_buff *)0)->cb), - "SCTP: ulpevent does not fit in skb!\n", return 0); - - return 1; + } } /* Warning: The following hash functions assume a power of two 'size'. */ /* This is the hash function for the SCTP port hash table. */ -static inline int sctp_phashfn(__u16 lport) +static inline int sctp_phashfn(struct net *net, __u16 lport) { - return lport & (sctp_port_hashsize - 1); + return (net_hash_mix(net) + lport) & (sctp_port_hashsize - 1); } /* This is the hash function for the endpoint hash table. */ -static inline int sctp_ep_hashfn(__u16 lport) +static inline int sctp_ep_hashfn(struct net *net, __u16 lport) { - return lport & (sctp_ep_hashsize - 1); + return (net_hash_mix(net) + lport) & (sctp_ep_hashsize - 1); } /* This is the hash function for the association hash table. */ -static inline int sctp_assoc_hashfn(__u16 lport, __u16 rport) +static inline int sctp_assoc_hashfn(struct net *net, __u16 lport, __u16 rport) { - int h = (lport << 16) + rport; + int h = (lport << 16) + rport + net_hash_mix(net); h ^= h>>8; return h & (sctp_assoc_hashsize - 1); } @@ -659,8 +537,8 @@ static inline int sctp_vtag_hashfn(__u16 lport, __u16 rport, __u32 vtag) return h & (sctp_assoc_hashsize - 1); } -#define sctp_for_each_hentry(epb, node, head) \ - hlist_for_each_entry(epb, node, head, node) +#define sctp_for_each_hentry(epb, head) \ + hlist_for_each_entry(epb, head, node) /* Is a socket of this style? */ #define sctp_style(sk, style) __sctp_style((sk), (SCTP_SOCKET_##style)) @@ -703,4 +581,17 @@ static inline void sctp_v4_map_v6(union sctp_addr *addr) addr->v6.sin6_addr.s6_addr32[2] = htonl(0x0000ffff); } +/* The cookie is always 0 since this is how it's used in the + * pmtu code. + */ +static inline struct dst_entry *sctp_transport_dst_check(struct sctp_transport *t) +{ + if (t->dst && !dst_check(t->dst, t->dst_cookie)) { + dst_release(t->dst); + t->dst = NULL; + } + + return t->dst; +} + #endif /* __net_sctp_h__ */ |