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-rw-r--r--recipes-kernel/cryptodev/sdk_patches/0034-extend-API-with-CIOCHASH-to-support-direct-hash-oper.patch114
1 files changed, 114 insertions, 0 deletions
diff --git a/recipes-kernel/cryptodev/sdk_patches/0034-extend-API-with-CIOCHASH-to-support-direct-hash-oper.patch b/recipes-kernel/cryptodev/sdk_patches/0034-extend-API-with-CIOCHASH-to-support-direct-hash-oper.patch
new file mode 100644
index 0000000..3a1f0c0
--- /dev/null
+++ b/recipes-kernel/cryptodev/sdk_patches/0034-extend-API-with-CIOCHASH-to-support-direct-hash-oper.patch
@@ -0,0 +1,114 @@
1From c43fa74b9ed11f0183d25b21486b71fe02d84de7 Mon Sep 17 00:00:00 2001
2From: Cristian Stoica <cristian.stoica@nxp.com>
3Date: Tue, 15 Dec 2015 15:31:47 +0200
4Subject: [PATCH 34/38] extend API with CIOCHASH to support direct hash
5 operations
6
7Signed-off-by: Cristian Stoica <cristian.stoica@nxp.com>
8---
9 crypto/cryptodev.h | 16 ++++++++++++++++
10 ioctl.c | 49 +++++++++++++++++++++++++++++++++++++++++++++++++
11 2 files changed, 65 insertions(+)
12
13diff --git a/crypto/cryptodev.h b/crypto/cryptodev.h
14index f6058ca..c6083f7 100644
15--- a/crypto/cryptodev.h
16+++ b/crypto/cryptodev.h
17@@ -167,6 +167,19 @@ struct crypt_auth_op {
18 __u32 iv_len;
19 };
20
21+/* data container for CIOCHASH operations */
22+struct hash_op_data {
23+ __u32 ses; /* session identifier */
24+ __u32 mac_op; /* cryptodev_crypto_op_t */
25+ __u8 *mackey;
26+ __u32 mackeylen;
27+
28+ __u16 flags; /* see COP_FLAG_* */
29+ __u32 len; /* length of source data */
30+ __u8 *src; /* source data */
31+ __u8 *mac_result;
32+};
33+
34 /* In plain AEAD mode the following are required:
35 * flags : 0
36 * iv : the initialization vector (12 bytes)
37@@ -325,4 +338,7 @@ enum cryptodev_crk_op_t {
38 /* additional ioctls for asynchronous operation for asymmetric ciphers*/
39 #define CIOCASYMASYNCRYPT _IOW('c', 112, struct crypt_kop)
40 #define CIOCASYMFETCHCOOKIE _IOR('c', 113, struct pkc_cookie_list_s)
41+
42+#define CIOCHASH _IOWR('c', 114, struct hash_op_data)
43+
44 #endif /* L_CRYPTODEV_H */
45diff --git a/ioctl.c b/ioctl.c
46index 7adde75..3763954 100644
47--- a/ioctl.c
48+++ b/ioctl.c
49@@ -960,6 +960,7 @@ cryptodev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg_)
50 void __user *arg = (void __user *)arg_;
51 int __user *p = arg;
52 struct session_op sop;
53+ struct hash_op_data hash_op;
54 struct kernel_crypt_op kcop;
55 struct kernel_crypt_auth_op kcaop;
56 struct crypt_priv *pcr = filp->private_data;
57@@ -1049,6 +1050,54 @@ cryptodev_ioctl(struct file *filp, unsigned int cmd, unsigned long arg_)
58 }
59
60 return kcop_to_user(&kcop, fcr, arg);
61+ case CIOCHASH:
62+ /* get session */
63+ if (unlikely(copy_from_user(&hash_op, arg, sizeof(struct hash_op_data)))) {
64+ pr_err("copy from user fault\n");
65+ return -EFAULT;
66+ }
67+
68+ sop.cipher = 0;
69+ sop.mac = hash_op.mac_op;
70+ sop.mackey = hash_op.mackey;
71+ sop.mackeylen = hash_op.mackeylen;
72+
73+ /* writes sop.ses as a side-effect */
74+ ret = crypto_create_session(fcr, &sop);
75+ if (unlikely(ret)) {
76+ pr_err("can't get session\n");
77+ return ret;
78+ }
79+
80+ /* do hashing */
81+ kcop.cop.ses = sop.ses;
82+ kcop.cop.flags = hash_op.flags;
83+ kcop.cop.len = hash_op.len;
84+ kcop.cop.src = hash_op.src;
85+ kcop.cop.mac = hash_op.mac_result;
86+ kcop.cop.dst = 0;
87+ kcop.cop.op = 0;
88+ kcop.cop.iv = 0;
89+ kcop.ivlen = 0;
90+ kcop.digestsize = 0; /* will be updated during operation */
91+ kcop.task = current;
92+ kcop.mm = current->mm;
93+
94+ ret = crypto_run(fcr, &kcop);
95+ if (unlikely(ret)) {
96+ dwarning(1, "Error in hash run");
97+ return ret;
98+ }
99+
100+ ret = copy_to_user(kcop.cop.mac, kcop.hash_output, kcop.digestsize);
101+ if (unlikely(ret)) {
102+ dwarning(1, "Error in copy to user");
103+ return ret;
104+ }
105+
106+ /* put session */
107+ ret = crypto_finish_session(fcr, sop.ses);
108+ return 0;
109 case CIOCAUTHCRYPT:
110 if (unlikely(ret = kcaop_from_user(&kcaop, fcr, arg))) {
111 dwarning(1, "Error copying from user");
112--
1132.7.0
114