1 files changed, 38 insertions, 30 deletions

diff --git a/net/tipc/subscr.c b/net/tipc/subscr.c
index 18813acc6bef..33313961d010 100644
--- a/net/tipc/subscr.c
+++ b/net/tipc/subscr.c
@@ -76,6 +76,19 @@ struct top_srv {
 static struct top_srv topsrv = { 0 };
 
 /**
+ * htohl - convert value to endianness used by destination
+ * @in: value to convert
+ * @swap: non-zero if endianness must be reversed
+ *
+ * Returns converted value
+ */
+
+static u32 htohl(u32 in, int swap)
+{
+        return swap ? swab32(in) : in;
+}
+
+/**
  * subscr_send_event - send a message containing a tipc_event to the subscriber
  *
  * Note: Must not hold subscriber's server port lock, since tipc_send() will
@@ -94,11 +107,11 @@ static void subscr_send_event(struct subscription *sub,
         msg_sect.iov_base = (void *)&sub->evt;
         msg_sect.iov_len = sizeof(struct tipc_event);
 
-        sub->evt.event = htonl(event);
-        sub->evt.found_lower = htonl(found_lower);
-        sub->evt.found_upper = htonl(found_upper);
-        sub->evt.port.ref = htonl(port_ref);
-        sub->evt.port.node = htonl(node);
+        sub->evt.event = htohl(event, sub->swap);
+        sub->evt.found_lower = htohl(found_lower, sub->swap);
+        sub->evt.found_upper = htohl(found_upper, sub->swap);
+        sub->evt.port.ref = htohl(port_ref, sub->swap);
+        sub->evt.port.node = htohl(node, sub->swap);
         tipc_send(sub->server_ref, 1, &msg_sect);
 }
 
@@ -274,29 +287,16 @@ static void subscr_cancel(struct tipc_subscr *s,
 {
         struct subscription *sub;
         struct subscription *sub_temp;
-        __u32 type, lower, upper, timeout, filter;
         int found = 0;
 
         /* Find first matching subscription, exit if not found */
 
-        type = ntohl(s->seq.type);
-        lower = ntohl(s->seq.lower);
-        upper = ntohl(s->seq.upper);
-        timeout = ntohl(s->timeout);
-        filter = ntohl(s->filter) & ~TIPC_SUB_CANCEL;
-
         list_for_each_entry_safe(sub, sub_temp, &subscriber->subscription_list,
                                  subscription_list) {
-                        if ((type == sub->seq.type) &&
-                            (lower == sub->seq.lower) &&
-                            (upper == sub->seq.upper) &&
-                            (timeout == sub->timeout) &&
-                            (filter == sub->filter) &&
-                             !memcmp(s->usr_handle,sub->evt.s.usr_handle,
-                                     sizeof(s->usr_handle)) ){
-                                found = 1;
-                                break;
-                        }
+                if (!memcmp(s, &sub->evt.s, sizeof(struct tipc_subscr))) {
+                        found = 1;
+                        break;
+                }
         }
         if (!found)
                 return;
@@ -310,7 +310,7 @@ static void subscr_cancel(struct tipc_subscr *s,
                 k_term_timer(&sub->timer);
                 spin_lock_bh(subscriber->lock);
         }
-        dbg("Cancel: removing sub %u,%u,%u from subscriber %p list\n",
+        dbg("Cancel: removing sub %u,%u,%u from subscriber %x list\n",
             sub->seq.type, sub->seq.lower, sub->seq.upper, subscriber);
         subscr_del(sub);
 }
@@ -325,10 +325,16 @@ static struct subscription *subscr_subscribe(struct tipc_subscr *s,
                                              struct subscriber *subscriber)
 {
         struct subscription *sub;
+        int swap;
+
+        /* Determine subscriber's endianness */
+
+        swap = !(s->filter & (TIPC_SUB_PORTS | TIPC_SUB_SERVICE));
 
         /* Detect & process a subscription cancellation request */
 
-        if (ntohl(s->filter) & TIPC_SUB_CANCEL) {
+        if (s->filter & htohl(TIPC_SUB_CANCEL, swap)) {
+                s->filter &= ~htohl(TIPC_SUB_CANCEL, swap);
                 subscr_cancel(s, subscriber);
                 return NULL;
         }
@@ -353,12 +359,13 @@ static struct subscription *subscr_subscribe(struct tipc_subscr *s,
 
         /* Initialize subscription object */
 
-        sub->seq.type = ntohl(s->seq.type);
-        sub->seq.lower = ntohl(s->seq.lower);
-        sub->seq.upper = ntohl(s->seq.upper);
-        sub->timeout = ntohl(s->timeout);
-        sub->filter = ntohl(s->filter);
-        if ((sub->filter && (sub->filter != TIPC_SUB_PORTS)) ||
+        sub->seq.type = htohl(s->seq.type, swap);
+        sub->seq.lower = htohl(s->seq.lower, swap);
+        sub->seq.upper = htohl(s->seq.upper, swap);
+        sub->timeout = htohl(s->timeout, swap);
+        sub->filter = htohl(s->filter, swap);
+        if ((!(sub->filter & TIPC_SUB_PORTS) ==
+             !(sub->filter & TIPC_SUB_SERVICE)) ||
             (sub->seq.lower > sub->seq.upper)) {
                 warn("Subscription rejected, illegal request\n");
                 kfree(sub);
@@ -369,6 +376,7 @@ static struct subscription *subscr_subscribe(struct tipc_subscr *s,
         INIT_LIST_HEAD(&sub->nameseq_list);
         list_add(&sub->subscription_list, &subscriber->subscription_list);
         sub->server_ref = subscriber->port_ref;
+        sub->swap = swap;
         memcpy(&sub->evt.s, s, sizeof(struct tipc_subscr));
         atomic_inc(&topsrv.subscription_count);
         if (sub->timeout != TIPC_WAIT_FOREVER) {