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author | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-05-14 14:07:21 -0300 |
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committer | Mauro Carvalho Chehab <mchehab@s-opensource.com> | 2017-05-14 14:07:21 -0300 |
commit | c65431e894d86b0baf6131048242944c738c227d (patch) | |
tree | c21d54144730f14380d5a58a6c3ae63d5f811b41 /crypto/xts.c | |
parent | 69ef4995da43c512ffa7d4e57d5124489a0b417f (diff) | |
parent | f087d7377871853f7162c3b61bcddb58bf3e6b9b (diff) | |
download | linux-crypto-c65431e894d86b0baf6131048242944c738c227d.tar.gz linux-crypto-c65431e894d86b0baf6131048242944c738c227d.zip |
Merge tag 'v4.12-rc1' into patchwork
Linux 4.12-rc1
* tag 'v4.12-rc1': (13212 commits)
Linux 4.12-rc1
mm, docs: update memory.stat description with workingset* entries
mm: vmscan: scan until it finds eligible pages
mm, thp: copying user pages must schedule on collapse
dax: fix PMD data corruption when fault races with write
dax: fix data corruption when fault races with write
ext4: return to starting transaction in ext4_dax_huge_fault()
mm: fix data corruption due to stale mmap reads
dax: prevent invalidation of mapped DAX entries
Tigran has moved
mm, vmalloc: fix vmalloc users tracking properly
mm/khugepaged: add missed tracepoint for collapse_huge_page_swapin
gcov: support GCC 7.1
mm, vmstat: Remove spurious WARN() during zoneinfo print
time: delete current_fs_time()
hwpoison, memcg: forcibly uncharge LRU pages
sound: Disable the build of OSS drivers
drm/i915: Make vblank evade warnings optional
Input: cros_ec_keyb - remove extraneous 'const'
drm/nouveau/therm: remove ineffective workarounds for alarm bugs
...
Diffstat (limited to '')
-rw-r--r-- | crypto/xts.c | 54 |
1 files changed, 35 insertions, 19 deletions
diff --git a/crypto/xts.c b/crypto/xts.c index c976bfac..d86c11a8 100644 --- a/crypto/xts.c +++ b/crypto/xts.c @@ -39,11 +39,11 @@ struct xts_instance_ctx { }; struct rctx { - be128 buf[XTS_BUFFER_SIZE / sizeof(be128)]; + le128 buf[XTS_BUFFER_SIZE / sizeof(le128)]; - be128 t; + le128 t; - be128 *ext; + le128 *ext; struct scatterlist srcbuf[2]; struct scatterlist dstbuf[2]; @@ -99,7 +99,7 @@ static int setkey(struct crypto_skcipher *parent, const u8 *key, static int post_crypt(struct skcipher_request *req) { struct rctx *rctx = skcipher_request_ctx(req); - be128 *buf = rctx->ext ?: rctx->buf; + le128 *buf = rctx->ext ?: rctx->buf; struct skcipher_request *subreq; const int bs = XTS_BLOCK_SIZE; struct skcipher_walk w; @@ -112,12 +112,12 @@ static int post_crypt(struct skcipher_request *req) while (w.nbytes) { unsigned int avail = w.nbytes; - be128 *wdst; + le128 *wdst; wdst = w.dst.virt.addr; do { - be128_xor(wdst, buf++, wdst); + le128_xor(wdst, buf++, wdst); wdst++; } while ((avail -= bs) >= bs); @@ -150,7 +150,7 @@ out: static int pre_crypt(struct skcipher_request *req) { struct rctx *rctx = skcipher_request_ctx(req); - be128 *buf = rctx->ext ?: rctx->buf; + le128 *buf = rctx->ext ?: rctx->buf; struct skcipher_request *subreq; const int bs = XTS_BLOCK_SIZE; struct skcipher_walk w; @@ -174,15 +174,15 @@ static int pre_crypt(struct skcipher_request *req) while (w.nbytes) { unsigned int avail = w.nbytes; - be128 *wsrc; - be128 *wdst; + le128 *wsrc; + le128 *wdst; wsrc = w.src.virt.addr; wdst = w.dst.virt.addr; do { *buf++ = rctx->t; - be128_xor(wdst++, &rctx->t, wsrc++); + le128_xor(wdst++, &rctx->t, wsrc++); gf128mul_x_ble(&rctx->t, &rctx->t); } while ((avail -= bs) >= bs); @@ -286,6 +286,13 @@ static void encrypt_done(struct crypto_async_request *areq, int err) struct rctx *rctx; rctx = skcipher_request_ctx(req); + + if (err == -EINPROGRESS) { + if (rctx->left != req->cryptlen) + return; + goto out; + } + subreq = &rctx->subreq; subreq->base.flags &= CRYPTO_TFM_REQ_MAY_BACKLOG; @@ -293,6 +300,7 @@ static void encrypt_done(struct crypto_async_request *areq, int err) if (rctx->left) return; +out: skcipher_request_complete(req, err); } @@ -330,6 +338,13 @@ static void decrypt_done(struct crypto_async_request *areq, int err) struct rctx *rctx; rctx = skcipher_request_ctx(req); + + if (err == -EINPROGRESS) { + if (rctx->left != req->cryptlen) + return; + goto out; + } + subreq = &rctx->subreq; subreq->base.flags &= CRYPTO_TFM_REQ_MAY_BACKLOG; @@ -337,6 +352,7 @@ static void decrypt_done(struct crypto_async_request *areq, int err) if (rctx->left) return; +out: skcipher_request_complete(req, err); } @@ -353,8 +369,8 @@ int xts_crypt(struct blkcipher_desc *desc, struct scatterlist *sdst, const unsigned int max_blks = req->tbuflen / bsize; struct blkcipher_walk walk; unsigned int nblocks; - be128 *src, *dst, *t; - be128 *t_buf = req->tbuf; + le128 *src, *dst, *t; + le128 *t_buf = req->tbuf; int err, i; BUG_ON(max_blks < 1); @@ -367,8 +383,8 @@ int xts_crypt(struct blkcipher_desc *desc, struct scatterlist *sdst, return err; nblocks = min(nbytes / bsize, max_blks); - src = (be128 *)walk.src.virt.addr; - dst = (be128 *)walk.dst.virt.addr; + src = (le128 *)walk.src.virt.addr; + dst = (le128 *)walk.dst.virt.addr; /* calculate first value of T */ req->tweak_fn(req->tweak_ctx, (u8 *)&t_buf[0], walk.iv); @@ -384,7 +400,7 @@ first: t = &t_buf[i]; /* PP <- T xor P */ - be128_xor(dst + i, t, src + i); + le128_xor(dst + i, t, src + i); } /* CC <- E(Key2,PP) */ @@ -393,7 +409,7 @@ first: /* C <- T xor CC */ for (i = 0; i < nblocks; i++) - be128_xor(dst + i, dst + i, &t_buf[i]); + le128_xor(dst + i, dst + i, &t_buf[i]); src += nblocks; dst += nblocks; @@ -401,7 +417,7 @@ first: nblocks = min(nbytes / bsize, max_blks); } while (nblocks > 0); - *(be128 *)walk.iv = *t; + *(le128 *)walk.iv = *t; err = blkcipher_walk_done(desc, &walk, nbytes); nbytes = walk.nbytes; @@ -409,8 +425,8 @@ first: break; nblocks = min(nbytes / bsize, max_blks); - src = (be128 *)walk.src.virt.addr; - dst = (be128 *)walk.dst.virt.addr; + src = (le128 *)walk.src.virt.addr; + dst = (le128 *)walk.dst.virt.addr; } return err; |