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-rw-r--r--net/sctp/associola.c171
-rw-r--r--net/sctp/auth.c17
-rw-r--r--net/sctp/endpointola.c5
-rw-r--r--net/sctp/ipv6.c4
-rw-r--r--net/sctp/output.c2
-rw-r--r--net/sctp/proc.c2
-rw-r--r--net/sctp/protocol.c18
-rw-r--r--net/sctp/sm_make_chunk.c34
-rw-r--r--net/sctp/sm_sideeffect.c7
-rw-r--r--net/sctp/sm_statefuns.c6
-rw-r--r--net/sctp/socket.c67
-rw-r--r--net/sctp/sysctl.c129
-rw-r--r--net/sctp/transport.c2
-rw-r--r--net/sctp/ulpevent.c122
-rw-r--r--net/sctp/ulpqueue.c4
15 files changed, 306 insertions, 284 deletions
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 39579c3e0d1..06a9ee6b2d3 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -55,6 +55,7 @@
#include <net/sctp/sm.h>
/* Forward declarations for internal functions. */
+static void sctp_select_active_and_retran_path(struct sctp_association *asoc);
static void sctp_assoc_bh_rcv(struct work_struct *work);
static void sctp_assoc_free_asconf_acks(struct sctp_association *asoc);
static void sctp_assoc_free_asconf_queue(struct sctp_association *asoc);
@@ -330,7 +331,7 @@ void sctp_association_free(struct sctp_association *asoc)
/* Only real associations count against the endpoint, so
* don't bother for if this is a temporary association.
*/
- if (!asoc->temp) {
+ if (!list_empty(&asoc->asocs)) {
list_del(&asoc->asocs);
/* Decrement the backlog value for a TCP-style listening
@@ -774,9 +775,6 @@ void sctp_assoc_control_transport(struct sctp_association *asoc,
sctp_transport_cmd_t command,
sctp_sn_error_t error)
{
- struct sctp_transport *t = NULL;
- struct sctp_transport *first;
- struct sctp_transport *second;
struct sctp_ulpevent *event;
struct sockaddr_storage addr;
int spc_state = 0;
@@ -829,13 +827,14 @@ void sctp_assoc_control_transport(struct sctp_association *asoc,
return;
}
- /* Generate and send a SCTP_PEER_ADDR_CHANGE notification to the
- * user.
+ /* Generate and send a SCTP_PEER_ADDR_CHANGE notification
+ * to the user.
*/
if (ulp_notify) {
memset(&addr, 0, sizeof(struct sockaddr_storage));
memcpy(&addr, &transport->ipaddr,
transport->af_specific->sockaddr_len);
+
event = sctp_ulpevent_make_peer_addr_change(asoc, &addr,
0, spc_state, error, GFP_ATOMIC);
if (event)
@@ -843,60 +842,7 @@ void sctp_assoc_control_transport(struct sctp_association *asoc,
}
/* Select new active and retran paths. */
-
- /* Look for the two most recently used active transports.
- *
- * This code produces the wrong ordering whenever jiffies
- * rolls over, but we still get usable transports, so we don't
- * worry about it.
- */
- first = NULL; second = NULL;
-
- list_for_each_entry(t, &asoc->peer.transport_addr_list,
- transports) {
-
- if ((t->state == SCTP_INACTIVE) ||
- (t->state == SCTP_UNCONFIRMED) ||
- (t->state == SCTP_PF))
- continue;
- if (!first || t->last_time_heard > first->last_time_heard) {
- second = first;
- first = t;
- } else if (!second ||
- t->last_time_heard > second->last_time_heard)
- second = t;
- }
-
- /* RFC 2960 6.4 Multi-Homed SCTP Endpoints
- *
- * By default, an endpoint should always transmit to the
- * primary path, unless the SCTP user explicitly specifies the
- * destination transport address (and possibly source
- * transport address) to use.
- *
- * [If the primary is active but not most recent, bump the most
- * recently used transport.]
- */
- if (((asoc->peer.primary_path->state == SCTP_ACTIVE) ||
- (asoc->peer.primary_path->state == SCTP_UNKNOWN)) &&
- first != asoc->peer.primary_path) {
- second = first;
- first = asoc->peer.primary_path;
- }
-
- if (!second)
- second = first;
- /* If we failed to find a usable transport, just camp on the
- * primary, even if it is inactive.
- */
- if (!first) {
- first = asoc->peer.primary_path;
- second = asoc->peer.primary_path;
- }
-
- /* Set the active and retran transports. */
- asoc->peer.active_path = first;
- asoc->peer.retran_path = second;
+ sctp_select_active_and_retran_path(asoc);
}
/* Hold a reference to an association. */
@@ -1090,7 +1036,7 @@ static void sctp_assoc_bh_rcv(struct work_struct *work)
}
if (chunk->transport)
- chunk->transport->last_time_heard = jiffies;
+ chunk->transport->last_time_heard = ktime_get();
/* Run through the state machine. */
error = sctp_do_sm(net, SCTP_EVENT_T_CHUNK, subtype,
@@ -1151,6 +1097,7 @@ void sctp_assoc_update(struct sctp_association *asoc,
asoc->c = new->c;
asoc->peer.rwnd = new->peer.rwnd;
asoc->peer.sack_needed = new->peer.sack_needed;
+ asoc->peer.auth_capable = new->peer.auth_capable;
asoc->peer.i = new->peer.i;
sctp_tsnmap_init(&asoc->peer.tsn_map, SCTP_TSN_MAP_INITIAL,
asoc->peer.i.initial_tsn, GFP_ATOMIC);
@@ -1278,13 +1225,41 @@ static u8 sctp_trans_score(const struct sctp_transport *trans)
return sctp_trans_state_to_prio_map[trans->state];
}
+static struct sctp_transport *sctp_trans_elect_tie(struct sctp_transport *trans1,
+ struct sctp_transport *trans2)
+{
+ if (trans1->error_count > trans2->error_count) {
+ return trans2;
+ } else if (trans1->error_count == trans2->error_count &&
+ ktime_after(trans2->last_time_heard,
+ trans1->last_time_heard)) {
+ return trans2;
+ } else {
+ return trans1;
+ }
+}
+
static struct sctp_transport *sctp_trans_elect_best(struct sctp_transport *curr,
struct sctp_transport *best)
{
+ u8 score_curr, score_best;
+
if (best == NULL)
return curr;
- return sctp_trans_score(curr) > sctp_trans_score(best) ? curr : best;
+ score_curr = sctp_trans_score(curr);
+ score_best = sctp_trans_score(best);
+
+ /* First, try a score-based selection if both transport states
+ * differ. If we're in a tie, lets try to make a more clever
+ * decision here based on error counts and last time heard.
+ */
+ if (score_curr > score_best)
+ return curr;
+ else if (score_curr == score_best)
+ return sctp_trans_elect_tie(curr, best);
+ else
+ return best;
}
void sctp_assoc_update_retran_path(struct sctp_association *asoc)
@@ -1325,6 +1300,76 @@ void sctp_assoc_update_retran_path(struct sctp_association *asoc)
__func__, asoc, &asoc->peer.retran_path->ipaddr.sa);
}
+static void sctp_select_active_and_retran_path(struct sctp_association *asoc)
+{
+ struct sctp_transport *trans, *trans_pri = NULL, *trans_sec = NULL;
+ struct sctp_transport *trans_pf = NULL;
+
+ /* Look for the two most recently used active transports. */
+ list_for_each_entry(trans, &asoc->peer.transport_addr_list,
+ transports) {
+ /* Skip uninteresting transports. */
+ if (trans->state == SCTP_INACTIVE ||
+ trans->state == SCTP_UNCONFIRMED)
+ continue;
+ /* Keep track of the best PF transport from our
+ * list in case we don't find an active one.
+ */
+ if (trans->state == SCTP_PF) {
+ trans_pf = sctp_trans_elect_best(trans, trans_pf);
+ continue;
+ }
+ /* For active transports, pick the most recent ones. */
+ if (trans_pri == NULL ||
+ ktime_after(trans->last_time_heard,
+ trans_pri->last_time_heard)) {
+ trans_sec = trans_pri;
+ trans_pri = trans;
+ } else if (trans_sec == NULL ||
+ ktime_after(trans->last_time_heard,
+ trans_sec->last_time_heard)) {
+ trans_sec = trans;
+ }
+ }
+
+ /* RFC 2960 6.4 Multi-Homed SCTP Endpoints
+ *
+ * By default, an endpoint should always transmit to the primary
+ * path, unless the SCTP user explicitly specifies the
+ * destination transport address (and possibly source transport
+ * address) to use. [If the primary is active but not most recent,
+ * bump the most recently used transport.]
+ */
+ if ((asoc->peer.primary_path->state == SCTP_ACTIVE ||
+ asoc->peer.primary_path->state == SCTP_UNKNOWN) &&
+ asoc->peer.primary_path != trans_pri) {
+ trans_sec = trans_pri;
+ trans_pri = asoc->peer.primary_path;
+ }
+
+ /* We did not find anything useful for a possible retransmission
+ * path; either primary path that we found is the the same as
+ * the current one, or we didn't generally find an active one.
+ */
+ if (trans_sec == NULL)
+ trans_sec = trans_pri;
+
+ /* If we failed to find a usable transport, just camp on the
+ * primary or retran, even if they are inactive, if possible
+ * pick a PF iff it's the better choice.
+ */
+ if (trans_pri == NULL) {
+ trans_pri = sctp_trans_elect_best(asoc->peer.primary_path,
+ asoc->peer.retran_path);
+ trans_pri = sctp_trans_elect_best(trans_pri, trans_pf);
+ trans_sec = asoc->peer.primary_path;
+ }
+
+ /* Set the active and retran transports. */
+ asoc->peer.active_path = trans_pri;
+ asoc->peer.retran_path = trans_sec;
+}
+
struct sctp_transport *
sctp_assoc_choose_alter_transport(struct sctp_association *asoc,
struct sctp_transport *last_sent_to)
@@ -1547,7 +1592,7 @@ int sctp_assoc_lookup_laddr(struct sctp_association *asoc,
/* Set an association id for a given association */
int sctp_assoc_set_id(struct sctp_association *asoc, gfp_t gfp)
{
- bool preload = gfp & __GFP_WAIT;
+ bool preload = !!(gfp & __GFP_WAIT);
int ret;
/* If the id is already assigned, keep it. */
diff --git a/net/sctp/auth.c b/net/sctp/auth.c
index 683c7d1b130..0e8529113dc 100644
--- a/net/sctp/auth.c
+++ b/net/sctp/auth.c
@@ -386,14 +386,13 @@ nomem:
*/
int sctp_auth_asoc_init_active_key(struct sctp_association *asoc, gfp_t gfp)
{
- struct net *net = sock_net(asoc->base.sk);
struct sctp_auth_bytes *secret;
struct sctp_shared_key *ep_key;
/* If we don't support AUTH, or peer is not capable
* we don't need to do anything.
*/
- if (!net->sctp.auth_enable || !asoc->peer.auth_capable)
+ if (!asoc->ep->auth_enable || !asoc->peer.auth_capable)
return 0;
/* If the key_id is non-zero and we couldn't find an
@@ -440,16 +439,16 @@ struct sctp_shared_key *sctp_auth_get_shkey(
*/
int sctp_auth_init_hmacs(struct sctp_endpoint *ep, gfp_t gfp)
{
- struct net *net = sock_net(ep->base.sk);
struct crypto_hash *tfm = NULL;
__u16 id;
- /* if the transforms are already allocted, we are done */
- if (!net->sctp.auth_enable) {
+ /* If AUTH extension is disabled, we are done */
+ if (!ep->auth_enable) {
ep->auth_hmacs = NULL;
return 0;
}
+ /* If the transforms are already allocated, we are done */
if (ep->auth_hmacs)
return 0;
@@ -665,12 +664,10 @@ static int __sctp_auth_cid(sctp_cid_t chunk, struct sctp_chunks_param *param)
/* Check if peer requested that this chunk is authenticated */
int sctp_auth_send_cid(sctp_cid_t chunk, const struct sctp_association *asoc)
{
- struct net *net;
if (!asoc)
return 0;
- net = sock_net(asoc->base.sk);
- if (!net->sctp.auth_enable || !asoc->peer.auth_capable)
+ if (!asoc->ep->auth_enable || !asoc->peer.auth_capable)
return 0;
return __sctp_auth_cid(chunk, asoc->peer.peer_chunks);
@@ -679,12 +676,10 @@ int sctp_auth_send_cid(sctp_cid_t chunk, const struct sctp_association *asoc)
/* Check if we requested that peer authenticate this chunk. */
int sctp_auth_recv_cid(sctp_cid_t chunk, const struct sctp_association *asoc)
{
- struct net *net;
if (!asoc)
return 0;
- net = sock_net(asoc->base.sk);
- if (!net->sctp.auth_enable)
+ if (!asoc->ep->auth_enable)
return 0;
return __sctp_auth_cid(chunk,
diff --git a/net/sctp/endpointola.c b/net/sctp/endpointola.c
index 8e5fdea0521..9da76ba4d10 100644
--- a/net/sctp/endpointola.c
+++ b/net/sctp/endpointola.c
@@ -68,7 +68,8 @@ static struct sctp_endpoint *sctp_endpoint_init(struct sctp_endpoint *ep,
if (!ep->digest)
return NULL;
- if (net->sctp.auth_enable) {
+ ep->auth_enable = net->sctp.auth_enable;
+ if (ep->auth_enable) {
/* Allocate space for HMACS and CHUNKS authentication
* variables. There are arrays that we encode directly
* into parameters to make the rest of the operations easier.
@@ -480,7 +481,7 @@ normal:
}
if (chunk->transport)
- chunk->transport->last_time_heard = jiffies;
+ chunk->transport->last_time_heard = ktime_get();
error = sctp_do_sm(net, SCTP_EVENT_T_CHUNK, subtype, state,
ep, asoc, chunk, GFP_ATOMIC);
diff --git a/net/sctp/ipv6.c b/net/sctp/ipv6.c
index 2b1738ef939..1999592ba88 100644
--- a/net/sctp/ipv6.c
+++ b/net/sctp/ipv6.c
@@ -216,7 +216,7 @@ static int sctp_v6_xmit(struct sk_buff *skb, struct sctp_transport *transport)
IP6_ECN_flow_xmit(sk, fl6->flowlabel);
if (!(transport->param_flags & SPP_PMTUD_ENABLE))
- skb->local_df = 1;
+ skb->ignore_df = 1;
SCTP_INC_STATS(sock_net(sk), SCTP_MIB_OUTSCTPPACKS);
@@ -943,7 +943,6 @@ static struct inet_protosw sctpv6_seqpacket_protosw = {
.protocol = IPPROTO_SCTP,
.prot = &sctpv6_prot,
.ops = &inet6_seqpacket_ops,
- .no_check = 0,
.flags = SCTP_PROTOSW_FLAG
};
static struct inet_protosw sctpv6_stream_protosw = {
@@ -951,7 +950,6 @@ static struct inet_protosw sctpv6_stream_protosw = {
.protocol = IPPROTO_SCTP,
.prot = &sctpv6_prot,
.ops = &inet6_seqpacket_ops,
- .no_check = 0,
.flags = SCTP_PROTOSW_FLAG,
};
diff --git a/net/sctp/output.c b/net/sctp/output.c
index 0f4d15fc262..01ab8e0723f 100644
--- a/net/sctp/output.c
+++ b/net/sctp/output.c
@@ -591,7 +591,7 @@ int sctp_packet_transmit(struct sctp_packet *packet)
pr_debug("***sctp_transmit_packet*** skb->len:%d\n", nskb->len);
- nskb->local_df = packet->ipfragok;
+ nskb->ignore_df = packet->ipfragok;
tp->af_specific->sctp_xmit(nskb, tp);
out:
diff --git a/net/sctp/proc.c b/net/sctp/proc.c
index 0947f1e15eb..34229ee7f37 100644
--- a/net/sctp/proc.c
+++ b/net/sctp/proc.c
@@ -78,7 +78,7 @@ static int sctp_snmp_seq_show(struct seq_file *seq, void *v)
for (i = 0; sctp_snmp_list[i].name != NULL; i++)
seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name,
- snmp_fold_field((void __percpu **)net->sctp.sctp_statistics,
+ snmp_fold_field(net->sctp.sctp_statistics,
sctp_snmp_list[i].entry));
return 0;
diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index c09757fbf80..6789d785e69 100644
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -491,8 +491,13 @@ static void sctp_v4_get_dst(struct sctp_transport *t, union sctp_addr *saddr,
continue;
if ((laddr->state == SCTP_ADDR_SRC) &&
(AF_INET == laddr->a.sa.sa_family)) {
- fl4->saddr = laddr->a.v4.sin_addr.s_addr;
fl4->fl4_sport = laddr->a.v4.sin_port;
+ flowi4_update_output(fl4,
+ asoc->base.sk->sk_bound_dev_if,
+ RT_CONN_FLAGS(asoc->base.sk),
+ daddr->v4.sin_addr.s_addr,
+ laddr->a.v4.sin_addr.s_addr);
+
rt = ip_route_output_key(sock_net(sk), fl4);
if (!IS_ERR(rt)) {
dst = &rt->dst;
@@ -1012,7 +1017,6 @@ static struct inet_protosw sctp_seqpacket_protosw = {
.protocol = IPPROTO_SCTP,
.prot = &sctp_prot,
.ops = &inet_seqpacket_ops,
- .no_check = 0,
.flags = SCTP_PROTOSW_FLAG
};
static struct inet_protosw sctp_stream_protosw = {
@@ -1020,7 +1024,6 @@ static struct inet_protosw sctp_stream_protosw = {
.protocol = IPPROTO_SCTP,
.prot = &sctp_prot,
.ops = &inet_seqpacket_ops,
- .no_check = 0,
.flags = SCTP_PROTOSW_FLAG
};
@@ -1100,14 +1103,15 @@ int sctp_register_pf(struct sctp_pf *pf, sa_family_t family)
static inline int init_sctp_mibs(struct net *net)
{
- return snmp_mib_init((void __percpu **)net->sctp.sctp_statistics,
- sizeof(struct sctp_mib),
- __alignof__(struct sctp_mib));
+ net->sctp.sctp_statistics = alloc_percpu(struct sctp_mib);
+ if (!net->sctp.sctp_statistics)
+ return -ENOMEM;
+ return 0;
}
static inline void cleanup_sctp_mibs(struct net *net)
{
- snmp_mib_free((void __percpu **)net->sctp.sctp_statistics);
+ free_percpu(net->sctp.sctp_statistics);
}
static void sctp_v4_pf_init(void)
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 3a1767ef320..ae0e616a7ca 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -219,6 +219,7 @@ struct sctp_chunk *sctp_make_init(const struct sctp_association *asoc,
gfp_t gfp, int vparam_len)
{
struct net *net = sock_net(asoc->base.sk);
+ struct sctp_endpoint *ep = asoc->ep;
sctp_inithdr_t init;
union sctp_params addrs;
size_t chunksize;
@@ -278,7 +279,7 @@ struct sctp_chunk *sctp_make_init(const struct sctp_association *asoc,
chunksize += vparam_len;
/* Account for AUTH related parameters */
- if (net->sctp.auth_enable) {
+ if (ep->auth_enable) {
/* Add random parameter length*/
chunksize += sizeof(asoc->c.auth_random);
@@ -363,7 +364,7 @@ struct sctp_chunk *sctp_make_init(const struct sctp_association *asoc,
}
/* Add SCTP-AUTH chunks to the parameter list */
- if (net->sctp.auth_enable) {
+ if (ep->auth_enable) {
sctp_addto_chunk(retval, sizeof(asoc->c.auth_random),
asoc->c.auth_random);
if (auth_hmacs)
@@ -1781,7 +1782,7 @@ no_hmac:
else
kt = ktime_get();
- if (!asoc && ktime_compare(bear_cookie->expiration, kt) < 0) {
+ if (!asoc && ktime_before(bear_cookie->expiration, kt)) {
/*
* Section 3.3.10.3 Stale Cookie Error (3)
*
@@ -2010,7 +2011,7 @@ static void sctp_process_ext_param(struct sctp_association *asoc,
/* if the peer reports AUTH, assume that he
* supports AUTH.
*/
- if (net->sctp.auth_enable)
+ if (asoc->ep->auth_enable)
asoc->peer.auth_capable = 1;
break;
case SCTP_CID_ASCONF:
@@ -2102,6 +2103,7 @@ static sctp_ierror_t sctp_process_unk_param(const struct sctp_association *asoc,
* SCTP_IERROR_NO_ERROR - continue with the chunk
*/
static sctp_ierror_t sctp_verify_param(struct net *net,
+ const struct sctp_endpoint *ep,
const struct sctp_association *asoc,
union sctp_params param,
sctp_cid_t cid,
@@ -2152,7 +2154,7 @@ static sctp_ierror_t sctp_verify_param(struct net *net,
goto fallthrough;
case SCTP_PARAM_RANDOM:
- if (!net->sctp.auth_enable)
+ if (!ep->auth_enable)
goto fallthrough;
/* SCTP-AUTH: Secion 6.1
@@ -2169,7 +2171,7 @@ static sctp_ierror_t sctp_verify_param(struct net *net,
break;
case SCTP_PARAM_CHUNKS:
- if (!net->sctp.auth_enable)
+ if (!ep->auth_enable)
goto fallthrough;
/* SCTP-AUTH: Section 3.2
@@ -2185,7 +2187,7 @@ static sctp_ierror_t sctp_verify_param(struct net *net,
break;
case SCTP_PARAM_HMAC_ALGO:
- if (!net->sctp.auth_enable)
+ if (!ep->auth_enable)
goto fallthrough;
hmacs = (struct sctp_hmac_algo_param *)param.p;
@@ -2220,10 +2222,9 @@ fallthrough:
}
/* Verify the INIT packet before we process it. */
-int sctp_verify_init(struct net *net, const struct sctp_association *asoc,
- sctp_cid_t cid,
- sctp_init_chunk_t *peer_init,
- struct sctp_chunk *chunk,
+int sctp_verify_init(struct net *net, const struct sctp_endpoint *ep,
+ const struct sctp_association *asoc, sctp_cid_t cid,
+ sctp_init_chunk_t *peer_init, struct sctp_chunk *chunk,
struct sctp_chunk **errp)
{
union sctp_params param;
@@ -2264,8 +2265,8 @@ int sctp_verify_init(struct net *net, const struct sctp_association *asoc,
/* Verify all the variable length parameters */
sctp_walk_params(param, peer_init, init_hdr.params) {
-
- result = sctp_verify_param(net, asoc, param, cid, chunk, errp);
+ result = sctp_verify_param(net, ep, asoc, param, cid,
+ chunk, errp);
switch (result) {
case SCTP_IERROR_ABORT:
case SCTP_IERROR_NOMEM:
@@ -2497,6 +2498,7 @@ static int sctp_process_param(struct sctp_association *asoc,
struct sctp_af *af;
union sctp_addr_param *addr_param;
struct sctp_transport *t;
+ struct sctp_endpoint *ep = asoc->ep;
/* We maintain all INIT parameters in network byte order all the
* time. This allows us to not worry about whether the parameters
@@ -2636,7 +2638,7 @@ do_addr_param:
goto fall_through;
case SCTP_PARAM_RANDOM:
- if (!net->sctp.auth_enable)
+ if (!ep->auth_enable)
goto fall_through;
/* Save peer's random parameter */
@@ -2649,7 +2651,7 @@ do_addr_param:
break;
case SCTP_PARAM_HMAC_ALGO:
- if (!net->sctp.auth_enable)
+ if (!ep->auth_enable)
goto fall_through;
/* Save peer's HMAC list */
@@ -2665,7 +2667,7 @@ do_addr_param:
break;
case SCTP_PARAM_CHUNKS:
- if (!net->sctp.auth_enable)
+ if (!ep->auth_enable)
goto fall_through;
asoc->peer.peer_chunks = kmemdup(param.p,
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index 5d6883ff00c..fef2acdf4a2 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -496,11 +496,10 @@ static void sctp_do_8_2_transport_strike(sctp_cmd_seq_t *commands,
/* If the transport error count is greater than the pf_retrans
* threshold, and less than pathmaxrtx, and if the current state
- * is not SCTP_UNCONFIRMED, then mark this transport as Partially
- * Failed, see SCTP Quick Failover Draft, section 5.1
+ * is SCTP_ACTIVE, then mark this transport as Partially Failed,
+ * see SCTP Quick Failover Draft, section 5.1
*/
- if ((transport->state != SCTP_PF) &&
- (transport->state != SCTP_UNCONFIRMED) &&
+ if ((transport->state == SCTP_ACTIVE) &&
(asoc->pf_retrans < transport->pathmaxrxt) &&
(transport->error_count > asoc->pf_retrans)) {
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index ae9fbeba40b..5170a1ff95a 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -357,7 +357,7 @@ sctp_disposition_t sctp_sf_do_5_1B_init(struct net *net,
/* Verify the INIT chunk before processing it. */
err_chunk = NULL;
- if (!sctp_verify_init(net, asoc, chunk->chunk_hdr->type,
+ if (!sctp_verify_init(net, ep, asoc, chunk->chunk_hdr->type,
(sctp_init_chunk_t *)chunk->chunk_hdr, chunk,
&err_chunk)) {
/* This chunk contains fatal error. It is to be discarded.
@@ -524,7 +524,7 @@ sctp_disposition_t sctp_sf_do_5_1C_ack(struct net *net,
/* Verify the INIT chunk before processing it. */
err_chunk = NULL;
- if (!sctp_verify_init(net, asoc, chunk->chunk_hdr->type,
+ if (!sctp_verify_init(net, ep, asoc, chunk->chunk_hdr->type,
(sctp_init_chunk_t *)chunk->chunk_hdr, chunk,
&err_chunk)) {
@@ -1430,7 +1430,7 @@ static sctp_disposition_t sctp_sf_do_unexpected_init(
/* Verify the INIT chunk before processing it. */
err_chunk = NULL;
- if (!sctp_verify_init(net, asoc, chunk->chunk_hdr->type,
+ if (!sctp_verify_init(net, ep, asoc, chunk->chunk_hdr->type,
(sctp_init_chunk_t *)chunk->chunk_hdr, chunk,
&err_chunk)) {
/* This chunk contains fatal error. It is to be discarded.
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index ff20e2dbbbc..42989968940 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -71,6 +71,7 @@
#include <net/route.h>
#include <net/ipv6.h>
#include <net/inet_common.h>
+#include <net/busy_poll.h>
#include <linux/socket.h> /* for sa_family_t */
#include <linux/export.h>
@@ -3321,10 +3322,10 @@ static int sctp_setsockopt_auth_chunk(struct sock *sk,
char __user *optval,
unsigned int optlen)
{
- struct net *net = sock_net(sk);
+ struct sctp_endpoint *ep = sctp_sk(sk)->ep;
struct sctp_authchunk val;
- if (!net->sctp.auth_enable)
+ if (!ep->auth_enable)
return -EACCES;
if (optlen != sizeof(struct sctp_authchunk))
@@ -3341,7 +3342,7 @@ static int sctp_setsockopt_auth_chunk(struct sock *sk,
}
/* add this chunk id to the endpoint */
- return sctp_auth_ep_add_chunkid(sctp_sk(sk)->ep, val.sauth_chunk);
+ return sctp_auth_ep_add_chunkid(ep, val.sauth_chunk);
}
/*
@@ -3354,12 +3355,12 @@ static int sctp_setsockopt_hmac_ident(struct sock *sk,
char __user *optval,
unsigned int optlen)
{
- struct net *net = sock_net(sk);
+ struct sctp_endpoint *ep = sctp_sk(sk)->ep;
struct sctp_hmacalgo *hmacs;
u32 idents;
int err;
- if (!net->sctp.auth_enable)
+ if (!ep->auth_enable)
return -EACCES;
if (optlen < sizeof(struct sctp_hmacalgo))
@@ -3376,7 +3377,7 @@ static int sctp_setsockopt_hmac_ident(struct sock *sk,
goto out;
}
- err = sctp_auth_ep_set_hmacs(sctp_sk(sk)->ep, hmacs);
+ err = sctp_auth_ep_set_hmacs(ep, hmacs);
out:
kfree(hmacs);
return err;
@@ -3392,12 +3393,12 @@ static int sctp_setsockopt_auth_key(struct sock *sk,
char __user *optval,
unsigned int optlen)
{
- struct net *net = sock_net(sk);
+ struct sctp_endpoint *ep = sctp_sk(sk)->ep;
struct sctp_authkey *authkey;
struct sctp_association *asoc;
int ret;
- if (!net->sctp.auth_enable)
+ if (!ep->auth_enable)
return -EACCES;
if (optlen <= sizeof(struct sctp_authkey))
@@ -3418,7 +3419,7 @@ static int sctp_setsockopt_auth_key(struct sock *sk,
goto out;
}
- ret = sctp_auth_set_key(sctp_sk(sk)->ep, asoc, authkey);
+ ret = sctp_auth_set_key(ep, asoc, authkey);
out:
kzfree(authkey);
return ret;
@@ -3434,11 +3435,11 @@ static int sctp_setsockopt_active_key(struct sock *sk,
char __user *optval,
unsigned int optlen)
{
- struct net *net = sock_net(sk);
+ struct sctp_endpoint *ep = sctp_sk(sk)->ep;
struct sctp_authkeyid val;
struct sctp_association *asoc;
- if (!net->sctp.auth_enable)
+ if (!ep->auth_enable)
return -EACCES;
if (optlen != sizeof(struct sctp_authkeyid))
@@ -3450,8 +3451,7 @@ static int sctp_setsockopt_active_key(struct sock *sk,
if (!asoc && val.scact_assoc_id && sctp_style(sk, UDP))
return -EINVAL;
- return sctp_auth_set_active_key(sctp_sk(sk)->ep, asoc,
- val.scact_keynumber);
+ return sctp_auth_set_active_key(ep, asoc, val.scact_keynumber);
}
/*
@@ -3463,11 +3463,11 @@ static int sctp_setsockopt_del_key(struct sock *sk,
char __user *optval,
unsigned int optlen)
{
- struct net *net = sock_net(sk);
+ struct sctp_endpoint *ep = sctp_sk(sk)->ep;
struct sctp_authkeyid val;
struct sctp_association *asoc;
- if (!net->sctp.auth_enable)
+ if (!ep->auth_enable)
return -EACCES;
if (optlen != sizeof(struct sctp_authkeyid))
@@ -3479,8 +3479,7 @@ static int sctp_setsockopt_del_key(struct sock *sk,
if (!asoc && val.scact_assoc_id && sctp_style(sk, UDP))
return -EINVAL;
- return sctp_auth_del_key_id(sctp_sk(sk)->ep, asoc,
- val.scact_keynumber);
+ return sctp_auth_del_key_id(ep, asoc, val.scact_keynumber);
}
@@ -5387,16 +5386,16 @@ static int sctp_getsockopt_maxburst(struct sock *sk, int len,
static int sctp_getsockopt_hmac_ident(struct sock *sk, int len,
char __user *optval, int __user *optlen)
{
- struct net *net = sock_net(sk);
+ struct sctp_endpoint *ep = sctp_sk(sk)->ep;
struct sctp_hmacalgo __user *p = (void __user *)optval;
struct sctp_hmac_algo_param *hmacs;
__u16 data_len = 0;
u32 num_idents;
- if (!net->sctp.auth_enable)
+ if (!ep->auth_enable)
return -EACCES;
- hmacs = sctp_sk(sk)->ep->auth_hmacs_list;
+ hmacs = ep->auth_hmacs_list;
data_len = ntohs(hmacs->param_hdr.length) - sizeof(sctp_paramhdr_t);
if (len < sizeof(struct sctp_hmacalgo) + data_len)
@@ -5417,11 +5416,11 @@ static int sctp_getsockopt_hmac_ident(struct sock *sk, int len,
static int sctp_getsockopt_active_key(struct sock *sk, int len,
char __user *optval, int __user *optlen)
{
- struct net *net = sock_net(sk);
+ struct sctp_endpoint *ep = sctp_sk(sk)->ep;
struct sctp_authkeyid val;
struct sctp_association *asoc;
- if (!net->sctp.auth_enable)
+ if (!ep->auth_enable)
return -EACCES;
if (len < sizeof(struct sctp_authkeyid))
@@ -5436,7 +5435,7 @@ static int sctp_getsockopt_active_key(struct sock *sk, int len,
if (asoc)
val.scact_keynumber = asoc->active_key_id;
else
- val.scact_keynumber = sctp_sk(sk)->ep->active_key_id;
+ val.scact_keynumber = ep->active_key_id;
len = sizeof(struct sctp_authkeyid);
if (put_user(len, optlen))
@@ -5450,7 +5449,7 @@ static int sctp_getsockopt_active_key(struct sock *sk, int len,
static int sctp_getsockopt_peer_auth_chunks(struct sock *sk, int len,
char __user *optval, int __user *optlen)
{
- struct net *net = sock_net(sk);
+ struct sctp_endpoint *ep = sctp_sk(sk)->ep;
struct sctp_authchunks __user *p = (void __user *)optval;
struct sctp_authchunks val;
struct sctp_association *asoc;
@@ -5458,7 +5457,7 @@ static int sctp_getsockopt_peer_auth_chunks(struct sock *sk, int len,
u32 num_chunks = 0;
char __user *to;
- if (!net->sctp.auth_enable)
+ if (!ep->auth_enable)
return -EACCES;
if (len < sizeof(struct sctp_authchunks))
@@ -5495,7 +5494,7 @@ num:
static int sctp_getsockopt_local_auth_chunks(struct sock *sk, int len,
char __user *optval, int __user *optlen)
{
- struct net *net = sock_net(sk);
+ struct sctp_endpoint *ep = sctp_sk(sk)->ep;
struct sctp_authchunks __user *p = (void __user *)optval;
struct sctp_authchunks val;
struct sctp_association *asoc;
@@ -5503,7 +5502,7 @@ static int sctp_getsockopt_local_auth_chunks(struct sock *sk, int len,
u32 num_chunks = 0;
char __user *to;
- if (!net->sctp.auth_enable)
+ if (!ep->auth_enable)
return -EACCES;
if (len < sizeof(struct sctp_authchunks))
@@ -5520,7 +5519,7 @@ static int sctp_getsockopt_local_auth_chunks(struct sock *sk, int len,
if (asoc)
ch = (struct sctp_chunks_param *)asoc->c.auth_chunks;
else
- ch = sctp_sk(sk)->ep->auth_chunk_list;
+ ch = ep->auth_chunk_list;
if (!ch)
goto num;
@@ -5947,8 +5946,9 @@ static long sctp_get_port_local(struct sock *sk, union sctp_addr *addr)
/* Search for an available port. */
int low, high, remaining, index;
unsigned int rover;
+ struct net *net = sock_net(sk);
- inet_get_local_port_range(sock_net(sk), &low, &high);
+ inet_get_local_port_range(net, &low, &high);
remaining = (high - low) + 1;
rover = prandom_u32() % remaining + low;
@@ -5956,7 +5956,7 @@ static long sctp_get_port_local(struct sock *sk, union sctp_addr *addr)
rover++;
if ((rover < low) || (rover > high))
rover = low;
- if (inet_is_reserved_local_port(rover))
+ if (inet_is_local_reserved_port(net, rover))
continue;
index = sctp_phashfn(sock_net(sk), rover);
head = &sctp_port_hashtable[index];
@@ -6559,6 +6559,10 @@ static struct sk_buff *sctp_skb_recv_datagram(struct sock *sk, int flags,
if (sk->sk_shutdown & RCV_SHUTDOWN)
break;
+ if (sk_can_busy_loop(sk) &&
+ sk_busy_loop(sk, noblock))
+ continue;
+
/* User doesn't want to wait. */
error = -EAGAIN;
if (!timeo)
@@ -6942,7 +6946,8 @@ void sctp_copy_sock(struct sock *newsk, struct sock *sk,
newsk->sk_type = sk->sk_type;
newsk->sk_bound_dev_if = sk->sk_bound_dev_if;
newsk->sk_flags = sk->sk_flags;
- newsk->sk_no_check = sk->sk_no_check;
+ newsk->sk_no_check_tx = sk->sk_no_check_tx;
+ newsk->sk_no_check_rx = sk->sk_no_check_rx;
newsk->sk_reuse = sk->sk_reuse;
newsk->sk_shutdown = sk->sk_shutdown;
diff --git a/net/sctp/sysctl.c b/net/sctp/sysctl.c
index 35c8923b555..12c7e01c267 100644
--- a/net/sctp/sysctl.c
+++ b/net/sctp/sysctl.c
@@ -34,6 +34,8 @@
* Sridhar Samudrala <sri@us.ibm.com>
*/
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
#include <net/sctp/structs.h>
#include <net/sctp/sctp.h>
#include <linux/sysctl.h>
@@ -46,6 +48,11 @@ static int sack_timer_min = 1;
static int sack_timer_max = 500;
static int addr_scope_max = 3; /* check sctp_scope_policy_t in include/net/sctp/constants.h for max entries */
static int rwnd_scale_max = 16;
+static int rto_alpha_min = 0;
+static int rto_beta_min = 0;
+static int rto_alpha_max = 1000;
+static int rto_beta_max = 1000;
+
static unsigned long max_autoclose_min = 0;
static unsigned long max_autoclose_max =
(MAX_SCHEDULE_TIMEOUT / HZ > UINT_MAX)
@@ -64,6 +71,12 @@ static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write,
static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
+static int proc_sctp_do_alpha_beta(struct ctl_table *ctl, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos);
+static int proc_sctp_do_auth(struct ctl_table *ctl, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos);
static struct ctl_table sctp_table[] = {
{
@@ -123,15 +136,19 @@ static struct ctl_table sctp_net_table[] = {
.procname = "rto_alpha_exp_divisor",
.data = &init_net.sctp.rto_alpha,
.maxlen = sizeof(int),
- .mode = 0444,
- .proc_handler = proc_dointvec,
+ .mode = 0644,
+ .proc_handler = proc_sctp_do_alpha_beta,
+ .extra1 = &rto_alpha_min,
+ .extra2 = &rto_alpha_max,
},
{
.procname = "rto_beta_exp_divisor",
.data = &init_net.sctp.rto_beta,
.maxlen = sizeof(int),
- .mode = 0444,
- .proc_handler = proc_dointvec,
+ .mode = 0644,
+ .proc_handler = proc_sctp_do_alpha_beta,
+ .extra1 = &rto_beta_min,
+ .extra2 = &rto_beta_max,
},
{
.procname = "max_burst",
@@ -266,7 +283,7 @@ static struct ctl_table sctp_net_table[] = {
.data = &init_net.sctp.auth_enable,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = proc_dointvec,
+ .proc_handler = proc_sctp_do_auth,
},
{
.procname = "addr_scope_policy",
@@ -304,41 +321,40 @@ static int proc_sctp_do_hmac_alg(struct ctl_table *ctl, int write,
loff_t *ppos)
{
struct net *net = current->nsproxy->net_ns;
- char tmp[8];
struct ctl_table tbl;
- int ret;
- int changed = 0;
+ bool changed = false;
char *none = "none";
+ char tmp[8];
+ int ret;
memset(&tbl, 0, sizeof(struct ctl_table));
if (write) {
tbl.data = tmp;
- tbl.maxlen = 8;
+ tbl.maxlen = sizeof(tmp);
} else {
tbl.data = net->sctp.sctp_hmac_alg ? : none;
tbl.maxlen = strlen(tbl.data);
}
- ret = proc_dostring(&tbl, write, buffer, lenp, ppos);
- if (write) {
+ ret = proc_dostring(&tbl, write, buffer, lenp, ppos);
+ if (write && ret == 0) {
#ifdef CONFIG_CRYPTO_MD5
if (!strncmp(tmp, "md5", 3)) {
net->sctp.sctp_hmac_alg = "md5";
- changed = 1;
+ changed = true;
}
#endif
#ifdef CONFIG_CRYPTO_SHA1
if (!strncmp(tmp, "sha1", 4)) {
net->sctp.sctp_hmac_alg = "sha1";
- changed = 1;
+ changed = true;
}
#endif
if (!strncmp(tmp, "none", 4)) {
net->sctp.sctp_hmac_alg = NULL;
- changed = 1;
+ changed = true;
}
-
if (!changed)
ret = -EINVAL;
}
@@ -351,11 +367,10 @@ static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write,
loff_t *ppos)
{
struct net *net = current->nsproxy->net_ns;
- int new_value;
- struct ctl_table tbl;
unsigned int min = *(unsigned int *) ctl->extra1;
unsigned int max = *(unsigned int *) ctl->extra2;
- int ret;
+ struct ctl_table tbl;
+ int ret, new_value;
memset(&tbl, 0, sizeof(struct ctl_table));
tbl.maxlen = sizeof(unsigned int);
@@ -364,12 +379,15 @@ static int proc_sctp_do_rto_min(struct ctl_table *ctl, int write,
tbl.data = &new_value;
else
tbl.data = &net->sctp.rto_min;
+
ret = proc_dointvec(&tbl, write, buffer, lenp, ppos);
- if (write) {
- if (ret || new_value > max || new_value < min)
+ if (write && ret == 0) {
+ if (new_value > max || new_value < min)
return -EINVAL;
+
net->sctp.rto_min = new_value;
}
+
return ret;
}
@@ -378,11 +396,10 @@ static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write,
loff_t *ppos)
{
struct net *net = current->nsproxy->net_ns;
- int new_value;
- struct ctl_table tbl;
unsigned int min = *(unsigned int *) ctl->extra1;
unsigned int max = *(unsigned int *) ctl->extra2;
- int ret;
+ struct ctl_table tbl;
+ int ret, new_value;
memset(&tbl, 0, sizeof(struct ctl_table));
tbl.maxlen = sizeof(unsigned int);
@@ -391,31 +408,75 @@ static int proc_sctp_do_rto_max(struct ctl_table *ctl, int write,
tbl.data = &new_value;
else
tbl.data = &net->sctp.rto_max;
+
ret = proc_dointvec(&tbl, write, buffer, lenp, ppos);
- if (write) {
- if (ret || new_value > max || new_value < min)
+ if (write && ret == 0) {
+ if (new_value > max || new_value < min)
return -EINVAL;
+
net->sctp.rto_max = new_value;
}
+
return ret;
}
-int sctp_sysctl_net_register(struct net *net)
+static int proc_sctp_do_alpha_beta(struct ctl_table *ctl, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
{
- struct ctl_table *table = sctp_net_table;
+ pr_warn_once("Changing rto_alpha or rto_beta may lead to "
+ "suboptimal rtt/srtt estimations!\n");
+
+ return proc_dointvec_minmax(ctl, write, buffer, lenp, ppos);
+}
- if (!net_eq(net, &init_net)) {
- int i;
+static int proc_sctp_do_auth(struct ctl_table *ctl, int write,
+ void __user *buffer, size_t *lenp,
+ loff_t *ppos)
+{
+ struct net *net = current->nsproxy->net_ns;
+ struct ctl_table tbl;
+ int new_value, ret;
- table = kmemdup(sctp_net_table, sizeof(sctp_net_table), GFP_KERNEL);
- if (!table)
- return -ENOMEM;
+ memset(&tbl, 0, sizeof(struct ctl_table));
+ tbl.maxlen = sizeof(unsigned int);
+
+ if (write)
+ tbl.data = &new_value;
+ else
+ tbl.data = &net->sctp.auth_enable;
- for (i = 0; table[i].data; i++)
- table[i].data += (char *)(&net->sctp) - (char *)&init_net.sctp;
+ ret = proc_dointvec(&tbl, write, buffer, lenp, ppos);
+ if (write && ret == 0) {
+ struct sock *sk = net->sctp.ctl_sock;
+
+ net->sctp.auth_enable = new_value;
+ /* Update the value in the control socket */
+ lock_sock(sk);
+ sctp_sk(sk)->ep->auth_enable = new_value;
+ release_sock(sk);
}
+ return ret;
+}
+
+int sctp_sysctl_net_register(struct net *net)
+{
+ struct ctl_table *table;
+ int i;
+
+ table = kmemdup(sctp_net_table, sizeof(sctp_net_table), GFP_KERNEL);
+ if (!table)
+ return -ENOMEM;
+
+ for (i = 0; table[i].data; i++)
+ table[i].data += (char *)(&net->sctp) - (char *)&init_net.sctp;
+
net->sctp.sysctl_header = register_net_sysctl(net, "net/sctp", table);
+ if (net->sctp.sysctl_header == NULL) {
+ kfree(table);
+ return -ENOMEM;
+ }
return 0;
}
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index 1d348d15b33..7dd672fa651 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -72,7 +72,7 @@ static struct sctp_transport *sctp_transport_init(struct net *net,
*/
peer->rto = msecs_to_jiffies(net->sctp.rto_initial);
- peer->last_time_heard = jiffies;
+ peer->last_time_heard = ktime_get();
peer->last_time_ecne_reduced = jiffies;
peer->param_flags = SPP_HB_DISABLE |
diff --git a/net/sctp/ulpevent.c b/net/sctp/ulpevent.c
index 85c64658bd0..b6842fdb53d 100644
--- a/net/sctp/ulpevent.c
+++ b/net/sctp/ulpevent.c
@@ -366,9 +366,10 @@ fail:
* specification [SCTP] and any extensions for a list of possible
* error formats.
*/
-struct sctp_ulpevent *sctp_ulpevent_make_remote_error(
- const struct sctp_association *asoc, struct sctp_chunk *chunk,
- __u16 flags, gfp_t gfp)
+struct sctp_ulpevent *
+sctp_ulpevent_make_remote_error(const struct sctp_association *asoc,
+ struct sctp_chunk *chunk, __u16 flags,
+ gfp_t gfp)
{
struct sctp_ulpevent *event;
struct sctp_remote_error *sre;
@@ -387,8 +388,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_remote_error(
/* Copy the skb to a new skb with room for us to prepend
* notification with.
*/
- skb = skb_copy_expand(chunk->skb, sizeof(struct sctp_remote_error),
- 0, gfp);
+ skb = skb_copy_expand(chunk->skb, sizeof(*sre), 0, gfp);
/* Pull off the rest of the cause TLV from the chunk. */
skb_pull(chunk->skb, elen);
@@ -399,62 +399,21 @@ struct sctp_ulpevent *sctp_ulpevent_make_remote_error(
event = sctp_skb2event(skb);
sctp_ulpevent_init(event, MSG_NOTIFICATION, skb->truesize);
- sre = (struct sctp_remote_error *)
- skb_push(skb, sizeof(struct sctp_remote_error));
+ sre = (struct sctp_remote_error *) skb_push(skb, sizeof(*sre));
/* Trim the buffer to the right length. */
- skb_trim(skb, sizeof(struct sctp_remote_error) + elen);
+ skb_trim(skb, sizeof(*sre) + elen);
- /* Socket Extensions for SCTP
- * 5.3.1.3 SCTP_REMOTE_ERROR
- *
- * sre_type:
- * It should be SCTP_REMOTE_ERROR.
- */
+ /* RFC6458, Section 6.1.3. SCTP_REMOTE_ERROR */
+ memset(sre, 0, sizeof(*sre));
sre->sre_type = SCTP_REMOTE_ERROR;
-
- /*
- * Socket Extensions for SCTP
- * 5.3.1.3 SCTP_REMOTE_ERROR
- *
- * sre_flags: 16 bits (unsigned integer)
- * Currently unused.
- */
sre->sre_flags = 0;
-
- /* Socket Extensions for SCTP
- * 5.3.1.3 SCTP_REMOTE_ERROR
- *
- * sre_length: sizeof (__u32)
- *
- * This field is the total length of the notification data,
- * including the notification header.
- */
sre->sre_length = skb->len;
-
- /* Socket Extensions for SCTP
- * 5.3.1.3 SCTP_REMOTE_ERROR
- *
- * sre_error: 16 bits (unsigned integer)
- * This value represents one of the Operational Error causes defined in
- * the SCTP specification, in network byte order.
- */
sre->sre_error = cause;
-
- /* Socket Extensions for SCTP
- * 5.3.1.3 SCTP_REMOTE_ERROR
- *
- * sre_assoc_id: sizeof (sctp_assoc_t)
- *
- * The association id field, holds the identifier for the association.
- * All notifications for a given association have the same association
- * identifier. For TCP style socket, this field is ignored.
- */
sctp_ulpevent_set_owner(event, asoc);
sre->sre_assoc_id = sctp_assoc2id(asoc);
return event;
-
fail:
return NULL;
}
@@ -899,7 +858,9 @@ __u16 sctp_ulpevent_get_notification_type(const struct sctp_ulpevent *event)
return notification->sn_header.sn_type;
}
-/* Copy out the sndrcvinfo into a msghdr. */
+/* RFC6458, Section 5.3.2. SCTP Header Information Structure
+ * (SCTP_SNDRCV, DEPRECATED)
+ */
void sctp_ulpevent_read_sndrcvinfo(const struct sctp_ulpevent *event,
struct msghdr *msghdr)
{
@@ -908,74 +869,21 @@ void sctp_ulpevent_read_sndrcvinfo(const struct sctp_ulpevent *event,
if (sctp_ulpevent_is_notification(event))
return;
- /* Sockets API Extensions for SCTP
- * Section 5.2.2 SCTP Header Information Structure (SCTP_SNDRCV)
- *
- * sinfo_stream: 16 bits (unsigned integer)
- *
- * For recvmsg() the SCTP stack places the message's stream number in
- * this value.
- */
+ memset(&sinfo, 0, sizeof(sinfo));
sinfo.sinfo_stream = event->stream;
- /* sinfo_ssn: 16 bits (unsigned integer)
- *
- * For recvmsg() this value contains the stream sequence number that
- * the remote endpoint placed in the DATA chunk. For fragmented
- * messages this is the same number for all deliveries of the message
- * (if more than one recvmsg() is needed to read the message).
- */
sinfo.sinfo_ssn = event->ssn;
- /* sinfo_ppid: 32 bits (unsigned integer)
- *
- * In recvmsg() this value is
- * the same information that was passed by the upper layer in the peer
- * application. Please note that byte order issues are NOT accounted
- * for and this information is passed opaquely by the SCTP stack from
- * one end to the other.
- */
sinfo.sinfo_ppid = event->ppid;
- /* sinfo_flags: 16 bits (unsigned integer)
- *
- * This field may contain any of the following flags and is composed of
- * a bitwise OR of these values.
- *
- * recvmsg() flags:
- *
- * SCTP_UNORDERED - This flag is present when the message was sent
- * non-ordered.
- */
sinfo.sinfo_flags = event->flags;
- /* sinfo_tsn: 32 bit (unsigned integer)
- *
- * For the receiving side, this field holds a TSN that was
- * assigned to one of the SCTP Data Chunks.
- */
sinfo.sinfo_tsn = event->tsn;
- /* sinfo_cumtsn: 32 bit (unsigned integer)
- *
- * This field will hold the current cumulative TSN as
- * known by the underlying SCTP layer. Note this field is
- * ignored when sending and only valid for a receive
- * operation when sinfo_flags are set to SCTP_UNORDERED.
- */
sinfo.sinfo_cumtsn = event->cumtsn;
- /* sinfo_assoc_id: sizeof (sctp_assoc_t)
- *
- * The association handle field, sinfo_assoc_id, holds the identifier
- * for the association announced in the COMMUNICATION_UP notification.
- * All notifications for a given association have the same identifier.
- * Ignored for one-to-one style sockets.
- */
sinfo.sinfo_assoc_id = sctp_assoc2id(event->asoc);
-
- /* context value that is set via SCTP_CONTEXT socket option. */
+ /* Context value that is set via SCTP_CONTEXT socket option. */
sinfo.sinfo_context = event->asoc->default_rcv_context;
-
/* These fields are not used while receiving. */
sinfo.sinfo_timetolive = 0;
put_cmsg(msghdr, IPPROTO_SCTP, SCTP_SNDRCV,
- sizeof(struct sctp_sndrcvinfo), (void *)&sinfo);
+ sizeof(sinfo), &sinfo);
}
/* Do accounting for bytes received and hold a reference to the association
diff --git a/net/sctp/ulpqueue.c b/net/sctp/ulpqueue.c
index 7144eb6a1b9..d49dc2ed30a 100644
--- a/net/sctp/ulpqueue.c
+++ b/net/sctp/ulpqueue.c
@@ -38,6 +38,7 @@
#include <linux/types.h>
#include <linux/skbuff.h>
#include <net/sock.h>
+#include <net/busy_poll.h>
#include <net/sctp/structs.h>
#include <net/sctp/sctp.h>
#include <net/sctp/sm.h>
@@ -204,6 +205,9 @@ int sctp_ulpq_tail_event(struct sctp_ulpq *ulpq, struct sctp_ulpevent *event)
if (sock_flag(sk, SOCK_DEAD) || (sk->sk_shutdown & RCV_SHUTDOWN))
goto out_free;
+ if (!sctp_ulpevent_is_notification(event))
+ sk_mark_napi_id(sk, skb);
+
/* Check if the user wishes to receive this event. */
if (!sctp_ulpevent_is_enabled(event, &sctp_sk(sk)->subscribe))
goto out_free;
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 15:16:28 +0000