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-rw-r--r--include/net/sctp/sctp.h10
-rw-r--r--net/sctp/input.c2
-rw-r--r--net/sctp/ipv6.c2
-rw-r--r--net/sctp/sm_make_chunk.c6
-rw-r--r--net/sctp/sm_statefuns.c103
-rw-r--r--net/sctp/socket.c45
-rw-r--r--net/sctp/tsnmap.c14
7 files changed, 123 insertions, 59 deletions
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index 16baef4dab7..d529045c167 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -190,6 +190,16 @@ void sctp_assocs_proc_exit(void);
/*
+ * Module global variables
+ */
+
+ /*
+ * sctp/protocol.c
+ */
+extern struct kmem_cache *sctp_chunk_cachep __read_mostly;
+extern struct kmem_cache *sctp_bucket_cachep __read_mostly;
+
+/*
* Section: Macros, externs, and inlines
*/
diff --git a/net/sctp/input.c b/net/sctp/input.c
index d57ff7f3c57..47e56017f4c 100644
--- a/net/sctp/input.c
+++ b/net/sctp/input.c
@@ -590,7 +590,7 @@ out_unlock:
* Return 0 - If further processing is needed.
* Return 1 - If the packet can be discarded right away.
*/
-int sctp_rcv_ootb(struct sk_buff *skb)
+static int sctp_rcv_ootb(struct sk_buff *skb)
{
sctp_chunkhdr_t *ch;
__u8 *ch_end;
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index 2c29394fd92..f8aa23dda1c 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -641,6 +641,8 @@ static struct sock *sctp_v6_create_accept_sk(struct sock *sk,
newsctp6sk = (struct sctp6_sock *)newsk;
inet_sk(newsk)->pinet6 = &newsctp6sk->inet6;
+ sctp_sk(newsk)->v4mapped = sctp_sk(sk)->v4mapped;
+
newinet = inet_sk(newsk);
newnp = inet6_sk(newsk);
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 8d18f570c2e..51c4d7fef1d 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -65,8 +65,6 @@
#include <net/sctp/sctp.h>
#include <net/sctp/sm.h>
-extern struct kmem_cache *sctp_chunk_cachep;
-
SCTP_STATIC
struct sctp_chunk *sctp_make_chunk(const struct sctp_association *asoc,
__u8 type, __u8 flags, int paylen);
@@ -115,15 +113,12 @@ void sctp_init_cause(struct sctp_chunk *chunk, __be16 cause_code,
const void *payload, size_t paylen)
{
sctp_errhdr_t err;
- int padlen;
__u16 len;
/* Cause code constants are now defined in network order. */
err.cause = cause_code;
len = sizeof(sctp_errhdr_t) + paylen;
- padlen = len % 4;
err.length = htons(len);
- len += padlen;
chunk->subh.err_hdr = sctp_addto_chunk(chunk, sizeof(sctp_errhdr_t), &err);
sctp_addto_chunk(chunk, paylen, payload);
}
@@ -1454,7 +1449,6 @@ no_hmac:
do_gettimeofday(&tv);
if (!asoc && tv_lt(bear_cookie->expiration, tv)) {
- __u16 len;
/*
* Section 3.3.10.3 Stale Cookie Error (3)
*
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index fd2dfdd7d7f..71cad56dd73 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -97,6 +97,13 @@ static sctp_disposition_t sctp_stop_t1_and_abort(sctp_cmd_seq_t *commands,
const struct sctp_association *asoc,
struct sctp_transport *transport);
+static sctp_disposition_t sctp_sf_abort_violation(
+ const struct sctp_association *asoc,
+ void *arg,
+ sctp_cmd_seq_t *commands,
+ const __u8 *payload,
+ const size_t paylen);
+
static sctp_disposition_t sctp_sf_violation_chunklen(
const struct sctp_endpoint *ep,
const struct sctp_association *asoc,
@@ -104,6 +111,13 @@ static sctp_disposition_t sctp_sf_violation_chunklen(
void *arg,
sctp_cmd_seq_t *commands);
+static sctp_disposition_t sctp_sf_violation_ctsn(
+ const struct sctp_endpoint *ep,
+ const struct sctp_association *asoc,
+ const sctp_subtype_t type,
+ void *arg,
+ sctp_cmd_seq_t *commands);
+
/* Small helper function that checks if the chunk length
* is of the appropriate length. The 'required_length' argument
* is set to be the size of a specific chunk we are testing.
@@ -2880,6 +2894,13 @@ sctp_disposition_t sctp_sf_eat_sack_6_2(const struct sctp_endpoint *ep,
return SCTP_DISPOSITION_DISCARD;
}
+ /* If Cumulative TSN Ack beyond the max tsn currently
+ * send, terminating the association and respond to the
+ * sender with an ABORT.
+ */
+ if (!TSN_lt(ctsn, asoc->next_tsn))
+ return sctp_sf_violation_ctsn(ep, asoc, type, arg, commands);
+
/* Return this SACK for further processing. */
sctp_add_cmd_sf(commands, SCTP_CMD_PROCESS_SACK, SCTP_SACKH(sackh));
@@ -3691,40 +3712,21 @@ sctp_disposition_t sctp_sf_violation(const struct sctp_endpoint *ep,
return SCTP_DISPOSITION_VIOLATION;
}
-
/*
- * Handle a protocol violation when the chunk length is invalid.
- * "Invalid" length is identified as smaller then the minimal length a
- * given chunk can be. For example, a SACK chunk has invalid length
- * if it's length is set to be smaller then the size of sctp_sack_chunk_t.
- *
- * We inform the other end by sending an ABORT with a Protocol Violation
- * error code.
- *
- * Section: Not specified
- * Verification Tag: Nothing to do
- * Inputs
- * (endpoint, asoc, chunk)
- *
- * Outputs
- * (reply_msg, msg_up, counters)
- *
- * Generate an ABORT chunk and terminate the association.
+ * Common function to handle a protocol violation.
*/
-static sctp_disposition_t sctp_sf_violation_chunklen(
- const struct sctp_endpoint *ep,
+static sctp_disposition_t sctp_sf_abort_violation(
const struct sctp_association *asoc,
- const sctp_subtype_t type,
void *arg,
- sctp_cmd_seq_t *commands)
+ sctp_cmd_seq_t *commands,
+ const __u8 *payload,
+ const size_t paylen)
{
struct sctp_chunk *chunk = arg;
struct sctp_chunk *abort = NULL;
- char err_str[]="The following chunk had invalid length:";
/* Make the abort chunk. */
- abort = sctp_make_abort_violation(asoc, chunk, err_str,
- sizeof(err_str));
+ abort = sctp_make_abort_violation(asoc, chunk, payload, paylen);
if (!abort)
goto nomem;
@@ -3756,6 +3758,57 @@ nomem:
return SCTP_DISPOSITION_NOMEM;
}
+/*
+ * Handle a protocol violation when the chunk length is invalid.
+ * "Invalid" length is identified as smaller then the minimal length a
+ * given chunk can be. For example, a SACK chunk has invalid length
+ * if it's length is set to be smaller then the size of sctp_sack_chunk_t.
+ *
+ * We inform the other end by sending an ABORT with a Protocol Violation
+ * error code.
+ *
+ * Section: Not specified
+ * Verification Tag: Nothing to do
+ * Inputs
+ * (endpoint, asoc, chunk)
+ *
+ * Outputs
+ * (reply_msg, msg_up, counters)
+ *
+ * Generate an ABORT chunk and terminate the association.
+ */
+static sctp_disposition_t sctp_sf_violation_chunklen(
+ const struct sctp_endpoint *ep,
+ const struct sctp_association *asoc,
+ const sctp_subtype_t type,
+ void *arg,
+ sctp_cmd_seq_t *commands)
+{
+ char err_str[]="The following chunk had invalid length:";
+
+ return sctp_sf_abort_violation(asoc, arg, commands, err_str,
+ sizeof(err_str));
+}
+
+/* Handle a protocol violation when the peer trying to advance the
+ * cumulative tsn ack to a point beyond the max tsn currently sent.
+ *
+ * We inform the other end by sending an ABORT with a Protocol Violation
+ * error code.
+ */
+static sctp_disposition_t sctp_sf_violation_ctsn(
+ const struct sctp_endpoint *ep,
+ const struct sctp_association *asoc,
+ const sctp_subtype_t type,
+ void *arg,
+ sctp_cmd_seq_t *commands)
+{
+ char err_str[]="The cumulative tsn ack beyond the max tsn currently sent:";
+
+ return sctp_sf_abort_violation(asoc, arg, commands, err_str,
+ sizeof(err_str));
+}
+
/***************************************************************************
* These are the state functions for handling primitive (Section 10) events.
***************************************************************************/
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index ee88f2ea510..01c6364245b 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -107,8 +107,6 @@ static void sctp_sock_migrate(struct sock *, struct sock *,
struct sctp_association *, sctp_socket_type_t);
static char *sctp_hmac_alg = SCTP_COOKIE_HMAC_ALG;
-extern struct kmem_cache *sctp_bucket_cachep;
-
/* Get the sndbuf space available at the time on the association. */
static inline int sctp_wspace(struct sctp_association *asoc)
{
@@ -433,7 +431,7 @@ out:
*
* Only sctp_setsockopt_bindx() is supposed to call this function.
*/
-int sctp_bindx_add(struct sock *sk, struct sockaddr *addrs, int addrcnt)
+static int sctp_bindx_add(struct sock *sk, struct sockaddr *addrs, int addrcnt)
{
int cnt;
int retval = 0;
@@ -602,7 +600,7 @@ out:
*
* Only sctp_setsockopt_bindx() is supposed to call this function.
*/
-int sctp_bindx_rem(struct sock *sk, struct sockaddr *addrs, int addrcnt)
+static int sctp_bindx_rem(struct sock *sk, struct sockaddr *addrs, int addrcnt)
{
struct sctp_sock *sp = sctp_sk(sk);
struct sctp_endpoint *ep = sp->ep;
@@ -977,7 +975,7 @@ static int __sctp_connect(struct sock* sk,
int err = 0;
int addrcnt = 0;
int walk_size = 0;
- union sctp_addr *sa_addr;
+ union sctp_addr *sa_addr = NULL;
void *addr_buf;
unsigned short port;
unsigned int f_flags = 0;
@@ -1011,7 +1009,10 @@ static int __sctp_connect(struct sock* sk,
goto out_free;
}
- err = sctp_verify_addr(sk, sa_addr, af->sockaddr_len);
+ /* Save current address so we can work with it */
+ memcpy(&to, sa_addr, af->sockaddr_len);
+
+ err = sctp_verify_addr(sk, &to, af->sockaddr_len);
if (err)
goto out_free;
@@ -1021,12 +1022,11 @@ static int __sctp_connect(struct sock* sk,
if (asoc && asoc->peer.port && asoc->peer.port != port)
goto out_free;
- memcpy(&to, sa_addr, af->sockaddr_len);
/* Check if there already is a matching association on the
* endpoint (other than the one created here).
*/
- asoc2 = sctp_endpoint_lookup_assoc(ep, sa_addr, &transport);
+ asoc2 = sctp_endpoint_lookup_assoc(ep, &to, &transport);
if (asoc2 && asoc2 != asoc) {
if (asoc2->state >= SCTP_STATE_ESTABLISHED)
err = -EISCONN;
@@ -1039,7 +1039,7 @@ static int __sctp_connect(struct sock* sk,
* make sure that there is no peeled-off association matching
* the peer address even on another socket.
*/
- if (sctp_endpoint_is_peeled_off(ep, sa_addr)) {
+ if (sctp_endpoint_is_peeled_off(ep, &to)) {
err = -EADDRNOTAVAIL;
goto out_free;
}
@@ -1070,7 +1070,7 @@ static int __sctp_connect(struct sock* sk,
}
}
- scope = sctp_scope(sa_addr);
+ scope = sctp_scope(&to);
asoc = sctp_association_new(ep, sk, scope, GFP_KERNEL);
if (!asoc) {
err = -ENOMEM;
@@ -1079,7 +1079,7 @@ static int __sctp_connect(struct sock* sk,
}
/* Prime the peer's transport structures. */
- transport = sctp_assoc_add_peer(asoc, sa_addr, GFP_KERNEL,
+ transport = sctp_assoc_add_peer(asoc, &to, GFP_KERNEL,
SCTP_UNKNOWN);
if (!transport) {
err = -ENOMEM;
@@ -1103,8 +1103,8 @@ static int __sctp_connect(struct sock* sk,
/* Initialize sk's dport and daddr for getpeername() */
inet_sk(sk)->dport = htons(asoc->peer.port);
- af = sctp_get_af_specific(to.sa.sa_family);
- af->to_sk_daddr(&to, sk);
+ af = sctp_get_af_specific(sa_addr->sa.sa_family);
+ af->to_sk_daddr(sa_addr, sk);
sk->sk_err = 0;
/* in-kernel sockets don't generally have a file allocated to them
@@ -1531,7 +1531,6 @@ SCTP_STATIC int sctp_sendmsg(struct kiocb *iocb, struct sock *sk,
goto out_unlock;
}
if (sinfo_flags & SCTP_ABORT) {
- struct sctp_chunk *chunk;
chunk = sctp_make_abort_user(asoc, msg, msg_len);
if (!chunk) {
@@ -4353,7 +4352,7 @@ static int sctp_getsockopt_local_addrs(struct sock *sk, int len,
space_left, &bytes_copied);
if (cnt < 0) {
err = cnt;
- goto error;
+ goto error_lock;
}
goto copy_getaddrs;
}
@@ -4367,7 +4366,7 @@ static int sctp_getsockopt_local_addrs(struct sock *sk, int len,
addrlen = sctp_get_af_specific(temp.sa.sa_family)->sockaddr_len;
if (space_left < addrlen) {
err = -ENOMEM; /*fixme: right error?*/
- goto error;
+ goto error_lock;
}
memcpy(buf, &temp, addrlen);
buf += addrlen;
@@ -4381,15 +4380,21 @@ copy_getaddrs:
if (copy_to_user(to, addrs, bytes_copied)) {
err = -EFAULT;
- goto error;
+ goto out;
}
if (put_user(cnt, &((struct sctp_getaddrs __user *)optval)->addr_num)) {
err = -EFAULT;
- goto error;
+ goto out;
}
if (put_user(bytes_copied, optlen))
err = -EFAULT;
-error:
+
+ goto out;
+
+error_lock:
+ sctp_read_unlock(addr_lock);
+
+out:
kfree(addrs);
return err;
}
@@ -5964,7 +5969,7 @@ static int sctp_wait_for_accept(struct sock *sk, long timeo)
return err;
}
-void sctp_wait_for_close(struct sock *sk, long timeout)
+static void sctp_wait_for_close(struct sock *sk, long timeout)
{
DEFINE_WAIT(wait);
diff --git a/net/sctp/tsnmap.c b/net/sctp/tsnmap.c
index d3192a1babc..1ff0daade30 100644
--- a/net/sctp/tsnmap.c
+++ b/net/sctp/tsnmap.c
@@ -161,7 +161,7 @@ SCTP_STATIC int sctp_tsnmap_next_gap_ack(const struct sctp_tsnmap *map,
__u16 *start, __u16 *end)
{
int started, ended;
- __u16 _start, _end, offset;
+ __u16 start_, end_, offset;
/* We haven't found a gap yet. */
started = ended = 0;
@@ -175,7 +175,7 @@ SCTP_STATIC int sctp_tsnmap_next_gap_ack(const struct sctp_tsnmap *map,
offset = iter->start - map->base_tsn;
sctp_tsnmap_find_gap_ack(map->tsn_map, offset, map->len, 0,
- &started, &_start, &ended, &_end);
+ &started, &start_, &ended, &end_);
}
/* Do we need to check the overflow map? */
@@ -193,8 +193,8 @@ SCTP_STATIC int sctp_tsnmap_next_gap_ack(const struct sctp_tsnmap *map,
offset,
map->len,
map->len,
- &started, &_start,
- &ended, &_end);
+ &started, &start_,
+ &ended, &end_);
}
/* The Gap Ack Block happens to end at the end of the
@@ -202,7 +202,7 @@ SCTP_STATIC int sctp_tsnmap_next_gap_ack(const struct sctp_tsnmap *map,
*/
if (started && !ended) {
ended++;
- _end = map->len + map->len - 1;
+ end_ = map->len + map->len - 1;
}
/* If we found a Gap Ack Block, return the start and end and
@@ -215,8 +215,8 @@ SCTP_STATIC int sctp_tsnmap_next_gap_ack(const struct sctp_tsnmap *map,
int gap = map->cumulative_tsn_ack_point -
map->base_tsn;
- *start = _start - gap;
- *end = _end - gap;
+ *start = start_ - gap;
+ *end = end_ - gap;
/* Move the iterator forward. */
iter->start = map->cumulative_tsn_ack_point + *end + 1;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-20 02:09:47 +0000