ocf-linux: version bump to 20110720

Fixes problem with TFM allocation in cryptosoft.c


Signed-off-by: Philip Prindeville <philipp@redfish-solutions.com>

Hauke:
 * remove ubsec_ssb package and take it from ocf-linux
 * use patches from ocf-linux package
 * refresh all patches
 * readd some build fixes for OpenWrt.
 * readd CRYPTO_MANAGER dependency


git-svn-id: svn://svn.openwrt.org/openwrt/trunk@27753 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 58 insertions, 79 deletions

diff --git a/target/linux/generic/files/crypto/ocf/crypto.c b/target/linux/generic/files/crypto/ocf/crypto.c
index ccd5a4bfab..f48210d062 100644
--- a/target/linux/generic/files/crypto/ocf/crypto.c
+++ b/target/linux/generic/files/crypto/ocf/crypto.c
@@ -64,10 +64,8 @@ __FBSDID("$FreeBSD: src/sys/opencrypto/crypto.c,v 1.16 2005/01/07 02:29:16 imp E
 
 
 #include <linux/version.h>
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,33))
-#include <generated/autoconf.h>
-#else
-#include <linux/autoconf.h>
+#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,38) && !defined(AUTOCONF_INCLUDED)
+#include <linux/config.h>
 #endif
 #include <linux/module.h>
 #include <linux/init.h>
@@ -76,7 +74,9 @@ __FBSDID("$FreeBSD: src/sys/opencrypto/crypto.c,v 1.16 2005/01/07 02:29:16 imp E
 #include <linux/wait.h>
 #include <linux/sched.h>
 #include <linux/spinlock.h>
-#include <linux/version.h>
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,4)
+#include <linux/kthread.h>
+#endif
 #include <cryptodev.h>
 
 /*
@@ -156,9 +156,8 @@ static int crypto_drivers_num = 0;
  * have one per-queue but having one simplifies handling of block/unblock
  * operations.
  */
-static	int crp_sleep = 0;
-static LIST_HEAD(crp_q);		/* request queues */
-static LIST_HEAD(crp_kq);
+static LIST_HEAD(crp_q);		/* crypto request queue */
+static LIST_HEAD(crp_kq);		/* asym request queue */
 
 static spinlock_t crypto_q_lock;
 
@@ -213,11 +212,6 @@ static struct kmem_cache *cryptop_zone;
 static struct kmem_cache *cryptodesc_zone;
 #endif
 
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,27)
-#include <linux/sched.h>
-#define	kill_proc(p,s,v)	send_sig(s,find_task_by_vpid(p),0)
-#endif
-
 #define debug crypto_debug
 int crypto_debug = 0;
 module_param(crypto_debug, int, 0644);
@@ -278,11 +272,13 @@ module_param(crypto_max_loopcount, int, 0644);
 MODULE_PARM_DESC(crypto_max_loopcount,
 	   "Maximum number of crypto ops to do before yielding to other processes");
 
-static pid_t	cryptoproc = (pid_t) -1;
-static struct	completion cryptoproc_exited;
+#ifndef CONFIG_NR_CPUS
+#define CONFIG_NR_CPUS 1
+#endif
+
+static struct task_struct *cryptoproc[CONFIG_NR_CPUS];
+static struct task_struct *cryptoretproc[CONFIG_NR_CPUS];
 static DECLARE_WAIT_QUEUE_HEAD(cryptoproc_wait);
-static pid_t	cryptoretproc = (pid_t) -1;
-static struct	completion cryptoretproc_exited;
 static DECLARE_WAIT_QUEUE_HEAD(cryptoretproc_wait);
 
 static	int crypto_proc(void *arg);
@@ -318,6 +314,7 @@ driver_suitable(const struct cryptocap *cap, const struct cryptoini *cri)
 	return 1;
 }
 
+
 /*
  * Select a driver for a new session that supports the specified
  * algorithms and, optionally, is constrained according to the flags.
@@ -791,8 +788,7 @@ crypto_unblock(u_int32_t driverid, int what)
 			cap->cc_unkqblocked = 0;
 			crypto_all_kqblocked = 0;
 		}
-		if (crp_sleep)
-			wake_up_interruptible(&cryptoproc_wait);
+		wake_up_interruptible(&cryptoproc_wait);
 		err = 0;
 	} else
 		err = EINVAL;
@@ -817,8 +813,8 @@ crypto_dispatch(struct cryptop *crp)
 
 	CRYPTO_Q_LOCK();
 	if (crypto_q_cnt >= crypto_q_max) {
-		CRYPTO_Q_UNLOCK();
 		cryptostats.cs_drops++;
+		CRYPTO_Q_UNLOCK();
 		return ENOMEM;
 	}
 	crypto_q_cnt++;
@@ -865,8 +861,7 @@ crypto_dispatch(struct cryptop *crp)
 		TAILQ_INSERT_TAIL(&crp_q, crp, crp_next);
 		result = 0;
 	}
-	if (crp_sleep)
-		wake_up_interruptible(&cryptoproc_wait);
+	wake_up_interruptible(&cryptoproc_wait);
 	CRYPTO_Q_UNLOCK();
 	return result;
 }
@@ -887,8 +882,7 @@ crypto_kdispatch(struct cryptkop *krp)
 	if (error == ERESTART) {
 		CRYPTO_Q_LOCK();
 		TAILQ_INSERT_TAIL(&crp_kq, krp, krp_next);
-		if (crp_sleep)
-			wake_up_interruptible(&cryptoproc_wait);
+		wake_up_interruptible(&cryptoproc_wait);
 		CRYPTO_Q_UNLOCK();
 		error = 0;
 	}
@@ -1186,8 +1180,7 @@ crypto_done(struct cryptop *crp)
 		 * Normal case; queue the callback for the thread.
 		 */
 		CRYPTO_RETQ_LOCK();
-		if (CRYPTO_RETQ_EMPTY())
-			wake_up_interruptible(&cryptoretproc_wait);/* shared wait channel */
+		wake_up_interruptible(&cryptoretproc_wait);/* shared wait channel */
 		TAILQ_INSERT_TAIL(&crp_ret_q, crp, crp_next);
 		CRYPTO_RETQ_UNLOCK();
 	}
@@ -1237,8 +1230,7 @@ crypto_kdone(struct cryptkop *krp)
 		 * Normal case; queue the callback for the thread.
 		 */
 		CRYPTO_RETQ_LOCK();
-		if (CRYPTO_RETQ_EMPTY())
-			wake_up_interruptible(&cryptoretproc_wait);/* shared wait channel */
+		wake_up_interruptible(&cryptoretproc_wait);/* shared wait channel */
 		TAILQ_INSERT_TAIL(&crp_ret_kq, krp, krp_next);
 		CRYPTO_RETQ_UNLOCK();
 	}
@@ -1281,7 +1273,7 @@ crypto_proc(void *arg)
 	unsigned long q_flags;
 	int loopcount = 0;
 
-	ocf_daemonize("crypto");
+	set_current_state(TASK_INTERRUPTIBLE);
 
 	CRYPTO_Q_LOCK();
 	for (;;) {
@@ -1435,12 +1427,10 @@ crypto_proc(void *arg)
 					list_empty(&crp_kq), crypto_all_kqblocked);
 			loopcount = 0;
 			CRYPTO_Q_UNLOCK();
-			crp_sleep = 1;
 			wait_event_interruptible(cryptoproc_wait,
 					!(list_empty(&crp_q) || crypto_all_qblocked) ||
 					!(list_empty(&crp_kq) || crypto_all_kqblocked) ||
-					cryptoproc == (pid_t) -1);
-			crp_sleep = 0;
+					kthread_should_stop());
 			if (signal_pending (current)) {
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
 				spin_lock_irq(&current->sigmask_lock);
@@ -1452,7 +1442,7 @@ crypto_proc(void *arg)
 			}
 			CRYPTO_Q_LOCK();
 			dprintk("%s - awake\n", __FUNCTION__);
-			if (cryptoproc == (pid_t) -1)
+			if (kthread_should_stop())
 				break;
 			cryptostats.cs_intrs++;
 		} else if (loopcount > crypto_max_loopcount) {
@@ -1461,12 +1451,14 @@ crypto_proc(void *arg)
 			 * been using the CPU exclusively for a while.
 			 */
 			loopcount = 0;
+			CRYPTO_Q_UNLOCK();
 			schedule();
+			CRYPTO_Q_LOCK();
 		}
 		loopcount++;
 	}
 	CRYPTO_Q_UNLOCK();
-	complete_and_exit(&cryptoproc_exited, 0);
+	return 0;
 }
 
 /*
@@ -1481,7 +1473,7 @@ crypto_ret_proc(void *arg)
 	struct cryptkop *krpt;
 	unsigned long  r_flags;
 
-	ocf_daemonize("crypto_ret");
+	set_current_state(TASK_INTERRUPTIBLE);
 
 	CRYPTO_RETQ_LOCK();
 	for (;;) {
@@ -1516,9 +1508,9 @@ crypto_ret_proc(void *arg)
 			dprintk("%s - sleeping\n", __FUNCTION__);
 			CRYPTO_RETQ_UNLOCK();
 			wait_event_interruptible(cryptoretproc_wait,
-					cryptoretproc == (pid_t) -1 ||
 					!list_empty(&crp_ret_q) ||
-					!list_empty(&crp_ret_kq));
+					!list_empty(&crp_ret_kq) ||
+					kthread_should_stop());
 			if (signal_pending (current)) {
 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
 				spin_lock_irq(&current->sigmask_lock);
@@ -1530,7 +1522,7 @@ crypto_ret_proc(void *arg)
 			}
 			CRYPTO_RETQ_LOCK();
 			dprintk("%s - awake\n", __FUNCTION__);
-			if (cryptoretproc == (pid_t) -1) {
+			if (kthread_should_stop()) {
 				dprintk("%s - EXITING!\n", __FUNCTION__);
 				break;
 			}
@@ -1538,7 +1530,7 @@ crypto_ret_proc(void *arg)
 		}
 	}
 	CRYPTO_RETQ_UNLOCK();
-	complete_and_exit(&cryptoretproc_exited, 0);
+	return 0;
 }
 
 
@@ -1644,6 +1636,7 @@ static int
 crypto_init(void)
 {
 	int error;
+	unsigned long cpu;
 
 	dprintk("%s(%p)\n", __FUNCTION__, (void *) crypto_init);
 
@@ -1686,25 +1679,28 @@ crypto_init(void)
 
 	memset(crypto_drivers, 0, crypto_drivers_num * sizeof(struct cryptocap));
 
-	init_completion(&cryptoproc_exited);
-	init_completion(&cryptoretproc_exited);
-
-	cryptoproc = 0; /* to avoid race condition where proc runs first */
-	cryptoproc = kernel_thread(crypto_proc, NULL, CLONE_FS|CLONE_FILES);
-	if (cryptoproc < 0) {
-		error = cryptoproc;
-		printk("crypto: crypto_init cannot start crypto thread; error %d",
-			error);
-		goto bad;
-	}
-
-	cryptoretproc = 0; /* to avoid race condition where proc runs first */
-	cryptoretproc = kernel_thread(crypto_ret_proc, NULL, CLONE_FS|CLONE_FILES);
-	if (cryptoretproc < 0) {
-		error = cryptoretproc;
-		printk("crypto: crypto_init cannot start cryptoret thread; error %d",
+	ocf_for_each_cpu(cpu) {
+		cryptoproc[cpu] = kthread_create(crypto_proc, (void *) cpu,
+									"ocf_%d", (int) cpu);
+		if (IS_ERR(cryptoproc[cpu])) {
+			error = PTR_ERR(cryptoproc[cpu]);
+			printk("crypto: crypto_init cannot start crypto thread; error %d",
 				error);
-		goto bad;
+			goto bad;
+		}
+		kthread_bind(cryptoproc[cpu], cpu);
+		wake_up_process(cryptoproc[cpu]);
+
+		cryptoretproc[cpu] = kthread_create(crypto_ret_proc, (void *) cpu,
+									"ocf_ret_%d", (int) cpu);
+		if (IS_ERR(cryptoretproc[cpu])) {
+			error = PTR_ERR(cryptoretproc[cpu]);
+			printk("crypto: crypto_init cannot start cryptoret thread; error %d",
+					error);
+			goto bad;
+		}
+		kthread_bind(cryptoretproc[cpu], cpu);
+		wake_up_process(cryptoretproc[cpu]);
 	}
 
 	return 0;
@@ -1717,34 +1713,17 @@ bad:
 static void
 crypto_exit(void)
 {
-	pid_t p;
-	unsigned long d_flags;
+	int cpu;
 
 	dprintk("%s()\n", __FUNCTION__);
 
 	/*
 	 * Terminate any crypto threads.
 	 */
-
-	CRYPTO_DRIVER_LOCK();
-	p = cryptoproc;
-	cryptoproc = (pid_t) -1;
-	kill_proc(p, SIGTERM, 1);
-	wake_up_interruptible(&cryptoproc_wait);
-	CRYPTO_DRIVER_UNLOCK();
-
-	wait_for_completion(&cryptoproc_exited);
-
-	CRYPTO_DRIVER_LOCK();
-	p = cryptoretproc;
-	cryptoretproc = (pid_t) -1;
-	kill_proc(p, SIGTERM, 1);
-	wake_up_interruptible(&cryptoretproc_wait);
-	CRYPTO_DRIVER_UNLOCK();
-
-	wait_for_completion(&cryptoretproc_exited);
-
-	/* XXX flush queues??? */
+	ocf_for_each_cpu(cpu) {
+		kthread_stop(cryptoproc[cpu]);
+		kthread_stop(cryptoretproc[cpu]);
+	}
 
 	/* 
 	 * Reclaim dynamically allocated resources.