Merge commit 'v2.6.28-rc3' into sched/core

3 files changed, 57 insertions, 14 deletions

diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index f1d07b5c1e17..1895a4ca9c4f 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -325,6 +325,38 @@ void unregister_pernet_subsys(struct pernet_operations *module)
 }
 EXPORT_SYMBOL_GPL(unregister_pernet_subsys);
 
+int register_pernet_gen_subsys(int *id, struct pernet_operations *ops)
+{
+        int rv;
+
+        mutex_lock(&net_mutex);
+again:
+        rv = ida_get_new_above(&net_generic_ids, 1, id);
+        if (rv < 0) {
+                if (rv == -EAGAIN) {
+                        ida_pre_get(&net_generic_ids, GFP_KERNEL);
+                        goto again;
+                }
+                goto out;
+        }
+        rv = register_pernet_operations(first_device, ops);
+        if (rv < 0)
+                ida_remove(&net_generic_ids, *id);
+        mutex_unlock(&net_mutex);
+out:
+        return rv;
+}
+EXPORT_SYMBOL_GPL(register_pernet_gen_subsys);
+
+void unregister_pernet_gen_subsys(int id, struct pernet_operations *ops)
+{
+        mutex_lock(&net_mutex);
+        unregister_pernet_operations(ops);
+        ida_remove(&net_generic_ids, id);
+        mutex_unlock(&net_mutex);
+}
+EXPORT_SYMBOL_GPL(unregister_pernet_gen_subsys);
+
 /**
  *      register_pernet_device - register a network namespace device
  *      @ops:  pernet operations structure for the subsystem
diff --git a/net/core/pktgen.c b/net/core/pktgen.c
index 99f656d35b4f..a47f5bad110d 100644
--- a/net/core/pktgen.c
+++ b/net/core/pktgen.c
@@ -1973,28 +1973,27 @@ static void pktgen_setup_inject(struct pktgen_dev *pkt_dev)
 
         /* make sure that we don't pick a non-existing transmit queue */
         ntxq = pkt_dev->odev->real_num_tx_queues;
-        if (ntxq <= num_online_cpus() && (pkt_dev->flags & F_QUEUE_MAP_CPU)) {
+        if (ntxq > num_online_cpus() && (pkt_dev->flags & F_QUEUE_MAP_CPU)) {
                 printk(KERN_WARNING "pktgen: WARNING: QUEUE_MAP_CPU "
-                       "disabled because CPU count (%d) exceeds number ",
-                       num_online_cpus());
-                printk(KERN_WARNING "pktgen: WARNING: of tx queues "
-                       "(%d) on %s \n", ntxq, pkt_dev->odev->name);
+                       "disabled because CPU count (%d) exceeds number "
+                       "of tx queues (%d) on %s\n", num_online_cpus(), ntxq,
+                       pkt_dev->odev->name);
                 pkt_dev->flags &= ~F_QUEUE_MAP_CPU;
         }
         if (ntxq <= pkt_dev->queue_map_min) {
                 printk(KERN_WARNING "pktgen: WARNING: Requested "
-                       "queue_map_min (%d) exceeds number of tx\n",
-                       pkt_dev->queue_map_min);
-                printk(KERN_WARNING "pktgen: WARNING: queues (%d) on "
-                       "%s, resetting\n", ntxq, pkt_dev->odev->name);
+                       "queue_map_min (zero-based) (%d) exceeds valid range "
+                       "[0 - %d] for (%d) queues on %s, resetting\n",
+                       pkt_dev->queue_map_min, (ntxq ?: 1)- 1, ntxq,
+                       pkt_dev->odev->name);
                 pkt_dev->queue_map_min = ntxq - 1;
         }
-        if (ntxq <= pkt_dev->queue_map_max) {
+        if (pkt_dev->queue_map_max >= ntxq) {
                 printk(KERN_WARNING "pktgen: WARNING: Requested "
-                       "queue_map_max (%d) exceeds number of tx\n",
-                       pkt_dev->queue_map_max);
-                printk(KERN_WARNING "pktgen: WARNING: queues (%d) on "
-                       "%s, resetting\n", ntxq, pkt_dev->odev->name);
+                       "queue_map_max (zero-based) (%d) exceeds valid range "
+                       "[0 - %d] for (%d) queues on %s, resetting\n",
+                       pkt_dev->queue_map_max, (ntxq ?: 1)- 1, ntxq,
+                       pkt_dev->odev->name);
                 pkt_dev->queue_map_max = ntxq - 1;
         }
 
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index 4e22e3a35359..ebb6b94f8af2 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -449,6 +449,18 @@ void kfree_skb(struct sk_buff *skb)
         __kfree_skb(skb);
 }
 
+/**
+ *      skb_recycle_check - check if skb can be reused for receive
+ *      @skb: buffer
+ *      @skb_size: minimum receive buffer size
+ *
+ *      Checks that the skb passed in is not shared or cloned, and
+ *      that it is linear and its head portion at least as large as
+ *      skb_size so that it can be recycled as a receive buffer.
+ *      If these conditions are met, this function does any necessary
+ *      reference count dropping and cleans up the skbuff as if it
+ *      just came from __alloc_skb().
+ */
 int skb_recycle_check(struct sk_buff *skb, int skb_size)
 {
         struct skb_shared_info *shinfo;