For simplicity's sake, this is a per-fd option, and therefore applies to
all sessions opened over it.
---
cryptodev.h | 1 +
cryptodev_main.c | 14 +++++++++++++-
2 files changed, 14 insertions(+), 1 deletions(-)
diff --git a/cryptodev.h b/cryptodev.h
index db4697c..8126bfc 100644
--- a/cryptodev.h
+++ b/cryptodev.h
@@ -177,6 +177,7 @@ enum cryptodev_crk_op_t {
#define CIOCKEY _IOWR('c', 105, struct crypt_kop)
#define CIOCASYMFEAT _IOR('c', 106, __u32)
#define CIOCGSESSINFO _IOWR('c', 107, struct session_info_op)
+#define CIOCSCPU _IOW('c', 108, __s32)
/* to indicate that CRIOGET is not required in linux
*/
diff --git a/cryptodev_main.c b/cryptodev_main.c
index efd08c8..3ef8c9f 100644
--- a/cryptodev_main.c
+++ b/cryptodev_main.c
@@ -95,6 +95,7 @@ struct crypt_priv {
int itemcount;
struct work_struct cryptask;
wait_queue_head_t user_waiter;
+ int cpu; /* number of CPU to bind to (cpuid + 1) */
};
#define FILL_SG(sg, ptr, len) \
@@ -933,7 +934,8 @@ static int crypto_async_run(struct crypt_priv *pcr, struct
kernel_crypt_op *kcop
list_add_tail(&item->__hook, &pcr->todo.list);
mutex_unlock(&pcr->todo.lock);
- queue_work(cryptodev_wq, &pcr->cryptask);
+ queue_work_on(pcr->cpu ? pcr->cpu - 1 : smp_processor_id(),
+ cryptodev_wq, &pcr->cryptask);
return 0;
}
@@ -1157,6 +1159,15 @@ cryptodev_ioctl(struct file *filp, unsigned int cmd,
unsigned long arg_)
return ret;
return kcop_to_user(&kcop, fcr, arg);
+ case CIOCSCPU:
+ if (unlikely(get_user(ret, p)))
+ return -EFAULT;
+
+ if (unlikely(ret > nr_cpu_ids))
+ return -EINVAL;
+
+ pcr->cpu = ret < 0 ? 0 : ret + 1;
+ return 0;
default:
return -EINVAL;
}
@@ -1268,6 +1279,7 @@ cryptodev_compat_ioctl(struct file *file, unsigned int
cmd, unsigned long arg_)
case CRIOGET:
case CIOCFSESSION:
case CIOCGSESSINFO:
+ case CIOCSCPU:
return cryptodev_ioctl(file, cmd, arg_);
case COMPAT_CIOCGSESSION:
--
1.7.3.4
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