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-rw-r--r--include/net/sctp/sctp.h308
1 files changed, 99 insertions, 209 deletions
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index ea806732b08..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__
@@ -62,13 +55,6 @@
* and will continue to evolve.
*/
-
-
-#ifdef TEST_FRAME
-#undef CONFIG_SCTP_DBG_OBJCNT
-#undef CONFIG_SYSCTL
-#endif /* TEST_FRAME */
-
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/in.h>
@@ -78,7 +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
@@ -90,30 +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.
*/
@@ -121,13 +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
@@ -135,19 +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);
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
@@ -158,12 +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);
@@ -173,12 +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_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);
/*
@@ -195,44 +170,14 @@ 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)
-#define SCTP_SOCK_SLEEP_PRE(sk) SOCK_SLEEP_PRE(sk)
-#define SCTP_SOCK_SLEEP_POST(sk) SOCK_SLEEP_POST(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
-{
+enum {
SCTP_MIB_NUM = 0,
SCTP_MIB_CURRESTAB, /* CurrEstab */
SCTP_MIB_ACTIVEESTABS, /* ActiveEstabs */
@@ -273,50 +218,20 @@ enum
#define SCTP_MIB_MAX __SCTP_MIB_MAX
struct sctp_mib {
unsigned long mibs[SCTP_MIB_MAX];
-} __SNMP_MIB_ALIGN__;
-
-
-/* Print debugging messages. */
-#if SCTP_DEBUG
-extern int sctp_debug_flag;
-#define SCTP_DEBUG_PRINTK(whatever...) \
- ((void) (sctp_debug_flag && printk(KERN_DEBUG whatever)))
-#define SCTP_DEBUG_PRINTK_IPADDR(lead, trail, leadparm, saddr, otherparms...) \
- if (sctp_debug_flag) { \
- if (saddr->sa.sa_family == AF_INET6) { \
- printk(KERN_DEBUG \
- lead NIP6_FMT trail, \
- leadparm, \
- NIP6(saddr->v6.sin6_addr), \
- otherparms); \
- } else { \
- printk(KERN_DEBUG \
- lead NIPQUAD_FMT trail, \
- leadparm, \
- NIPQUAD(saddr->v4.sin_addr.s_addr), \
- otherparms); \
- } \
- }
-#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__, __FUNCTION__, __LINE__); \
- func; \
- }
-
-#else /* SCTP_DEBUG */
-
-#define SCTP_DEBUG_PRINTK(whatever...)
-#define SCTP_DEBUG_PRINTK_IPADDR(whatever...)
-#define SCTP_ENABLE_DEBUG
-#define SCTP_DISABLE_DEBUG
-#define SCTP_ASSERT(expr, str, func)
-
-#endif /* SCTP_DEBUG */
+};
+/* 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);
+ }
+}
/*
* Macros for keeping a global reference of object allocations.
@@ -349,36 +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_jiffies_ms(ctl_table *table, int __user *name, int nlen,
- void __user *oldval, size_t __user *oldlenp,
- void __user *newval, size_t newlen) {
- return -ENOSYS;
-}
+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);
@@ -402,19 +316,17 @@ static inline void sctp_v6_del_protocol(void) { return; }
/* Map an association to an assoc_id. */
static inline sctp_assoc_t sctp_assoc2id(const struct sctp_association *asoc)
{
- return (asoc?asoc->assoc_id:0);
+ return asoc ? asoc->assoc_id : 0;
}
/* 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) \
-for (pos = (head)->next;\
- tmp = (pos)->next, pos != ((struct sk_buff *)(head));\
- pos = tmp)
-
+ skb_queue_walk_safe(head, pos, tmp)
/* A helper to append an entire skb list (list) to another (head). */
static inline void sctp_skb_list_tail(struct sk_buff_head *list,
@@ -422,16 +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);
-
- list_splice((struct list_head *)list, (struct list_head *)head->prev);
+ spin_lock_irqsave(&head->lock, flags);
+ spin_lock(&list->lock);
- head->qlen += list->qlen;
- list->qlen = 0;
+ 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);
}
/**
@@ -463,6 +372,7 @@ static inline void sctp_skb_set_owner_r(struct sk_buff *skb, struct sock *sk)
{
struct sctp_ulpevent *event = sctp_skb2event(skb);
+ skb_orphan(skb);
skb->sk = sk;
skb->destructor = sctp_sock_rfree;
atomic_add(event->rmem_len, &sk->sk_rmem_alloc);
@@ -475,7 +385,7 @@ static inline void sctp_skb_set_owner_r(struct sk_buff *skb, struct sock *sk)
/* Tests if the list has one and only one entry. */
static inline int sctp_list_single_entry(struct list_head *head)
{
- return ((head->next != head) && (head->next == head->prev));
+ return (head->next != head) && (head->next == head->prev);
}
/* Generate a random jitter in the range of -50% ~ +50% of input RTO. */
@@ -500,25 +410,26 @@ static inline __s32 sctp_jitter(__u32 rto)
}
/* Break down data chunks at this point. */
-static inline int sctp_frag_point(const struct sctp_sock *sp, int pmtu)
+static inline int sctp_frag_point(const struct sctp_association *asoc, int pmtu)
{
+ struct sctp_sock *sp = sctp_sk(asoc->base.sk);
int frag = pmtu;
frag -= sp->pf->af->net_header_len;
frag -= sizeof(struct sctphdr) + sizeof(struct sctp_data_chunk);
- if (sp->user_frag)
- frag = min_t(int, frag, sp->user_frag);
+ if (asoc->user_frag)
+ frag = min_t(int, frag, asoc->user_frag);
frag = min_t(int, frag, SCTP_MAX_CHUNK_LEN);
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;
}
@@ -532,7 +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)))
@@ -543,7 +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))))
@@ -559,32 +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 *)kmalloc(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;
@@ -602,7 +489,7 @@ static inline int ipver2af(__u8 ipver)
return AF_INET6;
default:
return 0;
- };
+ }
}
/* Convert from an address parameter type to an address family. */
@@ -615,38 +502,28 @@ 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));
+ return h & (sctp_assoc_hashsize - 1);
}
/* This is the hash function for the association hash table. This is
@@ -657,11 +534,11 @@ static inline int sctp_vtag_hashfn(__u16 lport, __u16 rport, __u32 vtag)
{
int h = (lport << 16) + rport;
h ^= vtag;
- return (h & (sctp_assoc_hashsize-1));
+ 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))
@@ -704,4 +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__ */
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-10 07:21:17 +0000