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crypto: chelsio - Fix src buffer dma length

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ulptx header cannot have length > 64k. Adjust length accordingly.

Signed-off-by: Harsh Jain <harsh@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Harsh Jain 2018-03-06 10:37:49 +05:30 committed by Herbert Xu
parent 125d01caae
commit 1d693cf650
1 changed files with 12 additions and 5 deletions
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17
drivers/crypto/chelsio/chcr_algo.c
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@ -662,7 +662,7 @@ static int chcr_sg_ent_in_wr(struct scatterlist *src,
{
int srclen = 0, dstlen = 0;
int srcsg = minsg, dstsg = minsg;
int offset = 0, less;
int offset = 0, soffset = 0, less, sless = 0;
if (sg_dma_len(src) == srcskip) {
src = sg_next(src);
@ -676,7 +676,9 @@ static int chcr_sg_ent_in_wr(struct scatterlist *src,
while (src && dst &&
space > (sgl_ent_len[srcsg + 1] + dsgl_ent_len[dstsg])) {
srclen += (sg_dma_len(src) - srcskip);
sless = min_t(unsigned int, sg_dma_len(src) - srcskip - soffset,
CHCR_SRC_SG_SIZE);
srclen += sless;
srcsg++;
offset = 0;
while (dst && ((dstsg + 1) <= MAX_DSGL_ENT) &&
@ -687,15 +689,20 @@ static int chcr_sg_ent_in_wr(struct scatterlist *src,
dstskip, CHCR_DST_SG_SIZE);
dstlen += less;
offset += less;
if (offset == sg_dma_len(dst)) {
if ((offset + dstskip) == sg_dma_len(dst)) {
dst = sg_next(dst);
offset = 0;
}
dstsg++;
dstskip = 0;
}
src = sg_next(src);
srcskip = 0;
soffset += sless;
if ((soffset + srcskip) == sg_dma_len(src)) {
src = sg_next(src);
srcskip = 0;
soffset = 0;
}
}
return min(srclen, dstlen);
}