| Message ID | 20141208200342.15309.4739.stgit@tstruk-mobl1 (mailing list archive) |
|---|---|
| State | Accepted |
| Delegated to: | Herbert Xu |
| Headers | show |
On Mon, Dec 08, 2014 at 12:03:42PM -0800, Tadeusz Struk wrote: > Hi, > algif_skcipher sends 127 sgl buffers for encryption regardless of how > many buffers acctually have data to process, where the few first with > valid len and the rest with zero len. This is not very eficient. > This patch marks the last one with data as the last one to process. > > Changes: > v2 - use data len to find the last buffer instead of nents in RX list. > v3 - Mark/unmark end when data is added and sgl->cur changed. > > Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com> Patch applied.
diff --git a/crypto/algif_skcipher.c b/crypto/algif_skcipher.c index 3e84f4a..9b84765 100644 --- a/crypto/algif_skcipher.c +++ b/crypto/algif_skcipher.c @@ -330,6 +330,7 @@ static int skcipher_sendmsg(struct kiocb *unused, struct socket *sock, sgl = list_entry(ctx->tsgl.prev, struct skcipher_sg_list, list); sg = sgl->sg; + sg_unmark_end(sg + sgl->cur); do { i = sgl->cur; plen = min_t(int, len, PAGE_SIZE); @@ -355,6 +356,9 @@ static int skcipher_sendmsg(struct kiocb *unused, struct socket *sock, sgl->cur++; } while (len && sgl->cur < MAX_SGL_ENTS); + if (!size) + sg_mark_end(sg + sgl->cur - 1); + ctx->merge = plen & (PAGE_SIZE - 1); } @@ -401,6 +405,10 @@ static ssize_t skcipher_sendpage(struct socket *sock, struct page *page, ctx->merge = 0; sgl = list_entry(ctx->tsgl.prev, struct skcipher_sg_list, list); + if (sgl->cur) + sg_unmark_end(sgl->sg + sgl->cur - 1); + + sg_mark_end(sgl->sg + sgl->cur); get_page(page); sg_set_page(sgl->sg + sgl->cur, page, size, offset); sgl->cur++;
Hi, algif_skcipher sends 127 sgl buffers for encryption regardless of how many buffers acctually have data to process, where the few first with valid len and the rest with zero len. This is not very eficient. This patch marks the last one with data as the last one to process. Changes: v2 - use data len to find the last buffer instead of nents in RX list. v3 - Mark/unmark end when data is added and sgl->cur changed. Signed-off-by: Tadeusz Struk <tadeusz.struk@intel.com> --- crypto/algif_skcipher.c | 8 ++++++++ 1 file changed, 8 insertions(+) -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html