Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

[cascardo/linux.git] / include / net / llc.h

diff --git a/include/net/llc.h b/include/net/llc.h
index 7940da1..5503b74 100644 (file)
--- a/include/net/llc.h
+++ b/include/net/llc.h
@@ -16,6 +16,9 @@
 #include <linux/if_ether.h>
 #include <linux/list.h>
 #include <linux/spinlock.h>
+#include <linux/rculist_nulls.h>
+#include <linux/hash.h>
+#include <linux/jhash.h>
 
 #include <asm/atomic.h>
 
@@ -31,6 +34,12 @@ struct llc_addr {
 #define LLC_SAP_STATE_INACTIVE 1
 #define LLC_SAP_STATE_ACTIVE   2
 
+#define LLC_SK_DEV_HASH_BITS 6
+#define LLC_SK_DEV_HASH_ENTRIES (1<<LLC_SK_DEV_HASH_BITS)
+
+#define LLC_SK_LADDR_HASH_BITS 6
+#define LLC_SK_LADDR_HASH_ENTRIES (1<<LLC_SK_LADDR_HASH_BITS)
+
 /**
  * struct llc_sap - Defines the SAP component
  *
@@ -53,18 +62,38 @@ struct llc_sap {
                                     struct net_device *orig_dev);
        struct llc_addr  laddr;
        struct list_head node;
-       struct {
-               rwlock_t          lock;
-               struct hlist_head list;
-       } sk_list;
+       spinlock_t sk_lock;
+       int sk_count;
+       struct hlist_nulls_head sk_laddr_hash[LLC_SK_LADDR_HASH_ENTRIES];
+       struct hlist_head sk_dev_hash[LLC_SK_DEV_HASH_ENTRIES];
 };
 
+static inline
+struct hlist_head *llc_sk_dev_hash(struct llc_sap *sap, int ifindex)
+{
+       return &sap->sk_dev_hash[ifindex % LLC_SK_DEV_HASH_ENTRIES];
+}
+
+static inline
+u32 llc_sk_laddr_hashfn(struct llc_sap *sap, const struct llc_addr *laddr)
+{
+       return hash_32(jhash(laddr->mac, sizeof(laddr->mac), 0),
+                      LLC_SK_LADDR_HASH_BITS);
+}
+
+static inline
+struct hlist_nulls_head *llc_sk_laddr_hash(struct llc_sap *sap,
+                                          const struct llc_addr *laddr)
+{
+       return &sap->sk_laddr_hash[llc_sk_laddr_hashfn(sap, laddr)];
+}
+
 #define LLC_DEST_INVALID         0      /* Invalid LLC PDU type */
 #define LLC_DEST_SAP             1      /* Type 1 goes here */
 #define LLC_DEST_CONN            2      /* Type 2 goes here */
 
 extern struct list_head llc_sap_list;
-extern rwlock_t llc_sap_list_lock;
+extern spinlock_t llc_sap_list_lock;
 
 extern int llc_rcv(struct sk_buff *skb, struct net_device *dev,
                   struct packet_type *pt, struct net_device *orig_dev);