[dpdk-dev] [PATCH v2 02/15] crypto: add total raw buffer length

[Hemant Agrawal <hemant.agrawal@nxp.com>]

From: Gagandeep Singh <g.singh@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.singh@nxp.com>
Acked-by: Akhil Goyal <gakhil@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;
 		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