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| author | tadeusz.struk@intel.com <tadeusz.struk@intel.com> | 2015-04-01 13:53:06 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-04-01 22:59:28 -0400 |
| commit | 033f46b3c13d4072d8ee6b26dd1e90fdd06895d0 (patch) | |
| tree | 635f3c1f4d3e5f39da720d0e28e0171a0063a226 /crypto | |
| parent | 99949a74aa8f1b0b1befbd1afaa6959a3654cd72 (diff) | |
| download | lwn-033f46b3c13d4072d8ee6b26dd1e90fdd06895d0.tar.gz lwn-033f46b3c13d4072d8ee6b26dd1e90fdd06895d0.zip | |
crypto: algif - explicitly mark end of data
After the TX sgl is expanded we need to explicitly mark end of data
at the last buffer that contains data.
Changes in v2
- use type 'bool' and true/false for 'mark'.
Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'crypto')
| -rw-r--r-- | crypto/algif_skcipher.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c index 2db1eb776932..0aa02635ceda 100644 --- a/crypto/algif_skcipher.c +++ b/crypto/algif_skcipher.c @@ -509,11 +509,11 @@ static int skcipher_recvmsg_async(struct socket *sock, struct msghdr *msg, struct skcipher_async_req *sreq; struct ablkcipher_request *req; struct skcipher_async_rsgl *last_rsgl = NULL; - unsigned int len = 0, tx_nents = skcipher_all_sg_nents(ctx); + unsigned int txbufs = 0, len = 0, tx_nents = skcipher_all_sg_nents(ctx); unsigned int reqlen = sizeof(struct skcipher_async_req) + GET_REQ_SIZE(ctx) + GET_IV_SIZE(ctx); - int i = 0; int err = -ENOMEM; + bool mark = false; lock_sock(sk); req = kmalloc(reqlen, GFP_KERNEL); @@ -555,7 +555,7 @@ static int skcipher_recvmsg_async(struct socket *sock, struct msghdr *msg, iov_iter_count(&msg->msg_iter)); used = min_t(unsigned long, used, sg->length); - if (i == tx_nents) { + if (txbufs == tx_nents) { struct scatterlist *tmp; int x; /* Ran out of tx slots in async request @@ -573,10 +573,11 @@ static int skcipher_recvmsg_async(struct socket *sock, struct msghdr *msg, kfree(sreq->tsg); sreq->tsg = tmp; tx_nents *= 2; + mark = true; } /* Need to take over the tx sgl from ctx * to the asynch req - these sgls will be freed later */ - sg_set_page(sreq->tsg + i++, sg_page(sg), sg->length, + sg_set_page(sreq->tsg + txbufs++, sg_page(sg), sg->length, sg->offset); if (list_empty(&sreq->list)) { @@ -604,6 +605,9 @@ static int skcipher_recvmsg_async(struct socket *sock, struct msghdr *msg, iov_iter_advance(&msg->msg_iter, used); } + if (mark) + sg_mark_end(sreq->tsg + txbufs - 1); + ablkcipher_request_set_crypt(req, sreq->tsg, sreq->first_sgl.sgl.sg, len, sreq->iv); err = ctx->enc ? crypto_ablkcipher_encrypt(req) : |