Merge branch 'from-linus' into bcm43xx

[linux-2.6-omap-h63xx.git] / drivers / char / random.c

diff --git a/drivers/char/random.c b/drivers/char/random.c
index 6b11d6b2129f08cb9a800292f05f409e0b70835d..4c3a5ca9d8f7a98f882cdbeed12f0949af940a55 100644 (file)
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -224,7 +224,6 @@
  */
 
 #include <linux/utsname.h>
-#include <linux/config.h>
 #include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/major.h>
@@ -417,7 +416,7 @@ static struct entropy_store input_pool = {
        .poolinfo = &poolinfo_table[0],
        .name = "input",
        .limit = 1,
-       .lock = SPIN_LOCK_UNLOCKED,
+       .lock = __SPIN_LOCK_UNLOCKED(&input_pool.lock),
        .pool = input_pool_data
 };
 
@@ -426,7 +425,7 @@ static struct entropy_store blocking_pool = {
        .name = "blocking",
        .limit = 1,
        .pull = &input_pool,
-       .lock = SPIN_LOCK_UNLOCKED,
+       .lock = __SPIN_LOCK_UNLOCKED(&blocking_pool.lock),
        .pool = blocking_pool_data
 };
 
@@ -434,7 +433,7 @@ static struct entropy_store nonblocking_pool = {
        .poolinfo = &poolinfo_table[1],
        .name = "nonblocking",
        .pull = &input_pool,
-       .lock = SPIN_LOCK_UNLOCKED,
+       .lock = __SPIN_LOCK_UNLOCKED(&nonblocking_pool.lock),
        .pool = nonblocking_pool_data
 };
 
@@ -632,7 +631,7 @@ out:
        preempt_enable();
 }
 
-extern void add_input_randomness(unsigned int type, unsigned int code,
+void add_input_randomness(unsigned int type, unsigned int code,
                                 unsigned int value)
 {
        static unsigned char last_value;
@@ -1554,10 +1553,8 @@ __u32 secure_tcp_sequence_number(__u32 saddr, __u32 daddr,
 
 EXPORT_SYMBOL(secure_tcp_sequence_number);
 
-
-
-/* Generate secure starting point for ephemeral TCP port search */
-u32 secure_tcp_port_ephemeral(__u32 saddr, __u32 daddr, __u16 dport)
+/* Generate secure starting point for ephemeral IPV4 transport port search */
+u32 secure_ipv4_port_ephemeral(__u32 saddr, __u32 daddr, __u16 dport)
 {
        struct keydata *keyptr = get_keyptr();
        u32 hash[4];
@@ -1575,7 +1572,7 @@ u32 secure_tcp_port_ephemeral(__u32 saddr, __u32 daddr, __u16 dport)
 }
 
 #if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
-u32 secure_tcpv6_port_ephemeral(const __u32 *saddr, const __u32 *daddr, __u16 dport)
+u32 secure_ipv6_port_ephemeral(const __u32 *saddr, const __u32 *daddr, __u16 dport)
 {
        struct keydata *keyptr = get_keyptr();
        u32 hash[12];
@@ -1586,7 +1583,40 @@ u32 secure_tcpv6_port_ephemeral(const __u32 *saddr, const __u32 *daddr, __u16 dp
 
        return twothirdsMD4Transform(daddr, hash);
 }
-EXPORT_SYMBOL(secure_tcpv6_port_ephemeral);
+#endif
+
+#if defined(CONFIG_IP_DCCP) || defined(CONFIG_IP_DCCP_MODULE)
+/* Similar to secure_tcp_sequence_number but generate a 48 bit value
+ * bit's 32-47 increase every key exchange
+ *       0-31  hash(source, dest)
+ */
+u64 secure_dccp_sequence_number(__u32 saddr, __u32 daddr,
+                               __u16 sport, __u16 dport)
+{
+       struct timeval tv;
+       u64 seq;
+       __u32 hash[4];
+       struct keydata *keyptr = get_keyptr();
+
+       hash[0] = saddr;
+       hash[1] = daddr;
+       hash[2] = (sport << 16) + dport;
+       hash[3] = keyptr->secret[11];
+
+       seq = half_md4_transform(hash, keyptr->secret);
+       seq |= ((u64)keyptr->count) << (32 - HASH_BITS);
+
+       do_gettimeofday(&tv);
+       seq += tv.tv_usec + tv.tv_sec * 1000000;
+       seq &= (1ull << 48) - 1;
+#if 0
+       printk("dccp init_seq(%lx, %lx, %d, %d) = %d\n",
+              saddr, daddr, sport, dport, seq);
+#endif
+       return seq;
+}
+
+EXPORT_SYMBOL(secure_dccp_sequence_number);
 #endif
 
 #endif /* CONFIG_INET */