Hi Herbert,
After merging the crypto tree, today's linux-next build (powerpc
allyesconfig) failed like this:
net/built-in.o: In function `.ecdh_shared_secret':
(.text+0x4ad8d0): multiple definition of `.ecdh_shared_secret'
crypto/built-in.o:(.text+0x113f0): first defined here
net/built-in.o:(.opd+0x430e0): multiple definition of `ecdh_shared_secret'
crypto/built-in.o:(.opd+0x1d40): first defined here
Caused by commit
3c4b23901a0c ("crypto: ecdh - Add ECDH software support")
The other definition is in net/bluetooth/ecc.c
I added the following patch for today (probably a better name could
be chosen):
From: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Date: Fri, 24 Jun 2016 16:13:37 +1000
Subject: [PATCH] crypto: make ecdh_shared_secret unique
There is another ecdh_shared_secret in net/bluetooth/ecc.c
Fixes: 3c4b23901a0c ("crypto: ecdh - Add ECDH software support")
Signed-off-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
---
crypto/ecc.c | 2 +-
crypto/ecc.h | 6 +++---
crypto/ecdh.c | 2 +-
3 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/crypto/ecc.c b/crypto/ecc.c
index 9aedec6bbe72..414c78a9c214 100644
--- a/crypto/ecc.c
+++ b/crypto/ecc.c
@@ -966,7 +966,7 @@ out:
return ret;
}
-int ecdh_shared_secret(unsigned int curve_id, unsigned int ndigits,
+int crypto_ecdh_shared_secret(unsigned int curve_id, unsigned int ndigits,
const u8 *private_key, unsigned int private_key_len,
const u8 *public_key, unsigned int public_key_len,
u8 *secret, unsigned int secret_len)
diff --git a/crypto/ecc.h b/crypto/ecc.h
index b5db4b989f3c..663d598c7406 100644
--- a/crypto/ecc.h
+++ b/crypto/ecc.h
@@ -60,7 +60,7 @@ int ecdh_make_pub_key(const unsigned int curve_id, unsigned int ndigits,
u8 *public_key, unsigned int public_key_len);
/**
- * ecdh_shared_secret() - Compute a shared secret
+ * crypto_ecdh_shared_secret() - Compute a shared secret
*
* @curve_id: id representing the curve to use
* @private_key: private key of part A
@@ -70,13 +70,13 @@ int ecdh_make_pub_key(const unsigned int curve_id, unsigned int ndigits,
* @secret: buffer for storing the calculated shared secret
* @secret_len: length of the secret buffer
*
- * Note: It is recommended that you hash the result of ecdh_shared_secret
+ * Note: It is recommended that you hash the result of crypto_ecdh_shared_secret
* before using it for symmetric encryption or HMAC.
*
* Returns 0 if the shared secret was generated successfully, a negative value
* if an error occurred.
*/
-int ecdh_shared_secret(unsigned int curve_id, unsigned int ndigits,
+int crypto_ecdh_shared_secret(unsigned int curve_id, unsigned int ndigits,
const u8 *private_key, unsigned int private_key_len,
const u8 *public_key, unsigned int public_key_len,
u8 *secret, unsigned int secret_len);
diff --git a/crypto/ecdh.c b/crypto/ecdh.c
index d3a9eeca4b32..3de289806d67 100644
--- a/crypto/ecdh.c
+++ b/crypto/ecdh.c
@@ -79,7 +79,7 @@ static int ecdh_compute_value(struct kpp_request *req)
if (copied != 2 * nbytes)
return -EINVAL;
- ret = ecdh_shared_secret(ctx->curve_id, ctx->ndigits,
+ ret = crypto_ecdh_shared_secret(ctx->curve_id, ctx->ndigits,
(const u8 *)ctx->private_key, nbytes,
(const u8 *)ctx->public_key, 2 * nbytes,
(u8 *)ctx->shared_secret, nbytes);
--
2.8.1
--
Cheers,
Stephen Rothwell
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