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authorLEROY Christophe <christophe.leroy@c-s.fr>2018-03-22 10:57:01 +0100
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2018-05-09 09:51:49 +0200
commit63d9df9eb7a587c528d3fd97054835a7bdc430c1 (patch)
treeced3869a49b735a32928aae5c80833baffbc58c5
parente9caf1e1d5d4a74956a358800af20cb5d8cd2eae (diff)
crypto: talitos - fix IPsec cipher in length
commit 2b1227301a8e4729409694e323b72c064c47cb6b upstream. For SEC 2.x+, cipher in length must contain only the ciphertext length. In case of using hardware ICV checking, the ICV length is provided via the "extent" field of the descriptor pointer. Cc: <stable@vger.kernel.org> # 4.8+ Fixes: 549bd8bc5987 ("crypto: talitos - Implement AEAD for SEC1 using HMAC_SNOOP_NO_AFEU") Reported-by: Horia Geantă <horia.geanta@nxp.com> Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr> Tested-by: Horia Geantă <horia.geanta@nxp.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> [backported to 4.9.y, 4.14.y] Signed-off-by: Horia Geantă <horia.geanta@nxp.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--drivers/crypto/talitos.c41
1 files changed, 21 insertions, 20 deletions
diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index ceae25112acd..57e1b203cf36 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -1116,10 +1116,10 @@ next:
return count;
}
-int talitos_sg_map(struct device *dev, struct scatterlist *src,
- unsigned int len, struct talitos_edesc *edesc,
- struct talitos_ptr *ptr,
- int sg_count, unsigned int offset, int tbl_off)
+static int talitos_sg_map_ext(struct device *dev, struct scatterlist *src,
+ unsigned int len, struct talitos_edesc *edesc,
+ struct talitos_ptr *ptr, int sg_count,
+ unsigned int offset, int tbl_off, int elen)
{
struct talitos_private *priv = dev_get_drvdata(dev);
bool is_sec1 = has_ftr_sec1(priv);
@@ -1130,7 +1130,7 @@ int talitos_sg_map(struct device *dev, struct scatterlist *src,
}
to_talitos_ptr_len(ptr, len, is_sec1);
- to_talitos_ptr_ext_set(ptr, 0, is_sec1);
+ to_talitos_ptr_ext_set(ptr, elen, is_sec1);
if (sg_count == 1) {
to_talitos_ptr(ptr, sg_dma_address(src) + offset, is_sec1);
@@ -1140,7 +1140,7 @@ int talitos_sg_map(struct device *dev, struct scatterlist *src,
to_talitos_ptr(ptr, edesc->dma_link_tbl + offset, is_sec1);
return sg_count;
}
- sg_count = sg_to_link_tbl_offset(src, sg_count, offset, len,
+ sg_count = sg_to_link_tbl_offset(src, sg_count, offset, len + elen,
&edesc->link_tbl[tbl_off]);
if (sg_count == 1) {
/* Only one segment now, so no link tbl needed*/
@@ -1154,6 +1154,15 @@ int talitos_sg_map(struct device *dev, struct scatterlist *src,
return sg_count;
}
+static int talitos_sg_map(struct device *dev, struct scatterlist *src,
+ unsigned int len, struct talitos_edesc *edesc,
+ struct talitos_ptr *ptr, int sg_count,
+ unsigned int offset, int tbl_off)
+{
+ return talitos_sg_map_ext(dev, src, len, edesc, ptr, sg_count, offset,
+ tbl_off, 0);
+}
+
/*
* fill in and submit ipsec_esp descriptor
*/
@@ -1171,7 +1180,7 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq,
unsigned int ivsize = crypto_aead_ivsize(aead);
int tbl_off = 0;
int sg_count, ret;
- int sg_link_tbl_len;
+ int elen = 0;
bool sync_needed = false;
struct talitos_private *priv = dev_get_drvdata(dev);
bool is_sec1 = has_ftr_sec1(priv);
@@ -1225,20 +1234,12 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq,
* extent is bytes of HMAC postpended to ciphertext,
* typically 12 for ipsec
*/
- to_talitos_ptr_len(&desc->ptr[4], cryptlen, is_sec1);
- to_talitos_ptr_ext_set(&desc->ptr[4], 0, is_sec1);
-
- sg_link_tbl_len = cryptlen;
-
- if (desc->hdr & DESC_HDR_TYPE_IPSEC_ESP) {
- to_talitos_ptr_ext_set(&desc->ptr[4], authsize, is_sec1);
-
- if (edesc->desc.hdr & DESC_HDR_MODE1_MDEU_CICV)
- sg_link_tbl_len += authsize;
- }
+ if ((desc->hdr & DESC_HDR_TYPE_IPSEC_ESP) &&
+ (desc->hdr & DESC_HDR_MODE1_MDEU_CICV))
+ elen = authsize;
- ret = talitos_sg_map(dev, areq->src, sg_link_tbl_len, edesc,
- &desc->ptr[4], sg_count, areq->assoclen, tbl_off);
+ ret = talitos_sg_map_ext(dev, areq->src, cryptlen, edesc, &desc->ptr[4],
+ sg_count, areq->assoclen, tbl_off, elen);
if (ret > 1) {
tbl_off += ret;