ocf-linux: version bump to 20110720

[openwrt.git] / target / linux / generic / patches-2.6.32 / 971-ocf_20110720.patch

diff --git a/target/linux/generic/patches-2.6.32/971-ocf_20110720.patch b/target/linux/generic/patches-2.6.32/971-ocf_20110720.patch
new file mode 100644 (file)
index 0000000..bfc5bda
--- /dev/null
+++ b/target/linux/generic/patches-2.6.32/971-ocf_20110720.patch
@@ -0,0 +1,131 @@
+--- a/drivers/char/random.c
++++ b/drivers/char/random.c
+@@ -129,6 +129,9 @@
+  *                                unsigned int value);
+  *    void add_interrupt_randomness(int irq);
+  *
++ *      void random_input_words(__u32 *buf, size_t wordcount, int ent_count)
++ *      int random_input_wait(void);
++ *
+  * add_input_randomness() uses the input layer interrupt timing, as well as
+  * the event type information from the hardware.
+  *
+@@ -140,6 +143,13 @@
+  * a better measure, since the timing of the disk interrupts are more
+  * unpredictable.
+  *
++ * random_input_words() just provides a raw block of entropy to the input
++ * pool, such as from a hardware entropy generator.
++ *
++ * random_input_wait() suspends the caller until such time as the
++ * entropy pool falls below the write threshold, and returns a count of how
++ * much entropy (in bits) is needed to sustain the pool.
++ *
+  * All of these routines try to estimate how many bits of randomness a
+  * particular randomness source.  They do this by keeping track of the
+  * first and second order deltas of the event timings.
+@@ -714,6 +724,61 @@ void add_disk_randomness(struct gendisk
+ }
+ #endif
+ 
++/*
++ * random_input_words - add bulk entropy to pool
++ *
++ * @buf: buffer to add
++ * @wordcount: number of __u32 words to add
++ * @ent_count: total amount of entropy (in bits) to credit
++ *
++ * this provides bulk input of entropy to the input pool
++ *
++ */
++void random_input_words(__u32 *buf, size_t wordcount, int ent_count)
++{
++      mix_pool_bytes(&input_pool, buf, wordcount*4);
++
++      credit_entropy_bits(&input_pool, ent_count);
++
++      DEBUG_ENT("crediting %d bits => %d\n",
++                ent_count, input_pool.entropy_count);
++      /*
++       * Wake up waiting processes if we have enough
++       * entropy.
++       */
++      if (input_pool.entropy_count >= random_read_wakeup_thresh)
++              wake_up_interruptible(&random_read_wait);
++}
++EXPORT_SYMBOL(random_input_words);
++
++/*
++ * random_input_wait - wait until random needs entropy
++ *
++ * this function sleeps until the /dev/random subsystem actually
++ * needs more entropy, and then return the amount of entropy
++ * that it would be nice to have added to the system.
++ */
++int random_input_wait(void)
++{
++      int count;
++
++      wait_event_interruptible(random_write_wait, 
++                       input_pool.entropy_count < random_write_wakeup_thresh);
++
++      count = random_write_wakeup_thresh - input_pool.entropy_count;
++
++        /* likely we got woken up due to a signal */
++      if (count <= 0) count = random_read_wakeup_thresh; 
++
++      DEBUG_ENT("requesting %d bits from input_wait()er %d<%d\n",
++                count,
++                input_pool.entropy_count, random_write_wakeup_thresh);
++
++      return count;
++}
++EXPORT_SYMBOL(random_input_wait);
++
++
+ #define EXTRACT_SIZE 10
+ 
+ /*********************************************************************
+--- a/fs/fcntl.c
++++ b/fs/fcntl.c
+@@ -195,6 +195,7 @@ static int setfl(int fd, struct file * f
+  out:
+       return error;
+ }
++EXPORT_SYMBOL(sys_dup);
+ 
+ static void f_modown(struct file *filp, struct pid *pid, enum pid_type type,
+                      int force)
+--- a/include/linux/miscdevice.h
++++ b/include/linux/miscdevice.h
+@@ -12,6 +12,7 @@
+ #define APOLLO_MOUSE_MINOR    7
+ #define PC110PAD_MINOR                9
+ /*#define ADB_MOUSE_MINOR     10      FIXME OBSOLETE */
++#define CRYPTODEV_MINOR               70      /* /dev/crypto */
+ #define WATCHDOG_MINOR                130     /* Watchdog timer     */
+ #define TEMP_MINOR            131     /* Temperature Sensor */
+ #define RTC_MINOR             135
+--- a/include/linux/random.h
++++ b/include/linux/random.h
+@@ -50,6 +50,10 @@ extern void add_input_randomness(unsigne
+                                unsigned int value);
+ extern void add_interrupt_randomness(int irq);
+ 
++extern void random_input_words(__u32 *buf, size_t wordcount, int ent_count);
++extern int random_input_wait(void);
++#define HAS_RANDOM_INPUT_WAIT 1
++
+ extern void get_random_bytes(void *buf, int nbytes);
+ void generate_random_uuid(unsigned char uuid_out[16]);
+ 
+--- a/kernel/pid.c
++++ b/kernel/pid.c
+@@ -387,6 +387,7 @@ struct task_struct *find_task_by_vpid(pi
+ {
+       return find_task_by_pid_ns(vnr, current->nsproxy->pid_ns);
+ }
++EXPORT_SYMBOL(find_task_by_vpid);
+ 
+ struct pid *get_task_pid(struct task_struct *task, enum pid_type type)
+ {