> From: Gagandeep Singh <g.si...@nxp.com>
>
> The current crypto raw data vectors is extended to support
> rte_security usecases, where we need total data length to know
> how much additional memory space is available in buffer other
> than data length so that driver/HW can write expanded size
> data after encryption.
>
> Signed-off-by: Gagandeep Singh <g.si...@nxp.com>
> Acked-by: Akhil Goyal <gak...@marvell.com>
> ---
> lib/cryptodev/rte_crypto_sym.h | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/lib/cryptodev/rte_crypto_sym.h b/lib/cryptodev/rte_crypto_sym.h
> index dcc0bd5933..e5cef1fb72 100644
> --- a/lib/cryptodev/rte_crypto_sym.h
> +++ b/lib/cryptodev/rte_crypto_sym.h
> @@ -37,6 +37,8 @@ struct rte_crypto_vec {
> rte_iova_t iova;
> /** length of the data buffer */
> uint32_t len;
> + /** total buffer length*/
> + uint32_t tot_len;
> };
>
> /**
> @@ -980,12 +982,14 @@ rte_crypto_mbuf_to_vec(const struct rte_mbuf *mb,
> uint32_t ofs, uint32_t len,
> seglen = mb->data_len - ofs;
> if (len <= seglen) {
> vec[0].len = len;
> + vec[0].tot_len = mb->buf_len;
That doesn't look right.
We should take into a count mbuf headroom and input offset.
Something like:
vec[0].tot_len = mb->buf_len - rte_pktmbuf_headroom(m) - ofs;
Same in other places below.
> return 1;
> }
>
> /* data spread across segments */
> vec[0].len = seglen;
> left = len - seglen;
> + vec[0].tot_len = mb->buf_len;
> for (i = 1, nseg = mb->next; nseg != NULL; nseg = nseg->next, i++) {
>
> vec[i].base = rte_pktmbuf_mtod(nseg, void *);
> @@ -995,6 +999,7 @@ rte_crypto_mbuf_to_vec(const struct rte_mbuf *mb,
> uint32_t ofs, uint32_t len,
> if (left <= seglen) {
> /* whole requested data is completed */
> vec[i].len = left;
> + vec[i].tot_len = mb->buf_len;
> left = 0;
> break;
> }
> @@ -1002,6 +1007,7 @@ rte_crypto_mbuf_to_vec(const struct rte_mbuf *mb,
> uint32_t ofs, uint32_t len,
> /* use whole segment */
> vec[i].len = seglen;
> left -= seglen;
> + vec[i].tot_len = mb->buf_len;
> }
>
> RTE_ASSERT(left == 0);
> --
> 2.17.1
