cryptodev: add total raw buffer length

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>
Acked-by: Konstantin Ananyev <konstantin.ananyev@intel.com>

diff --git a/doc/guides/rel_notes/deprecation.rst b/doc/guides/rel_notes/deprecation.rst
index 3b92b20..5cdc91d 100644 (file)
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -190,13 +190,6 @@ Deprecation Notices
   This field will be null for inplace processing.
   This change is targeted for DPDK 21.11.
 
-* cryptodev: The structure ``rte_crypto_vec`` would be updated to add
-  ``tot_len`` to support total buffer length.
-  This is required for security cases like IPsec and PDCP encryption offload
-  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.
-  This change is targeted for DPDK 21.11.
-
 * cryptodev: Hide structures ``rte_cryptodev_sym_session`` and
   ``rte_cryptodev_asym_session`` to remove unnecessary indirection between
   session and the private data of session. An opaque pointer can be exposed

diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst
index 3370be9..ccc0e8a 100644 (file)
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -269,6 +269,9 @@ API Changes
 * cryptodev: The field ``dataunit_len`` of the ``struct rte_crypto_cipher_xform``
   moved to the end of the structure and extended to ``uint32_t``.
 
+* cryptodev: The structure ``rte_crypto_vec`` was updated to add ``tot_len``
+  field to support total buffer length to facilitate protocol offload case.
+
 
 ABI Changes
 -----------

diff --git a/lib/cryptodev/rte_crypto_sym.h b/lib/cryptodev/rte_crypto_sym.h
index f8cb2cc..1f2f0a5 100644 (file)
--- 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;
 };
 
 /**
@@ -963,6 +965,7 @@ rte_crypto_mbuf_to_vec(const struct rte_mbuf *mb, uint32_t ofs, uint32_t len,
 
        vec[0].base = rte_pktmbuf_mtod_offset(mb, void *, ofs);
        vec[0].iova = rte_pktmbuf_iova_offset(mb, ofs);
+       vec[0].tot_len = mb->buf_len - rte_pktmbuf_headroom(mb) - ofs;
 
        /* whole data lies in the first segment */
        seglen = mb->data_len - ofs;
@@ -978,6 +981,7 @@ rte_crypto_mbuf_to_vec(const struct rte_mbuf *mb, uint32_t ofs, uint32_t len,
 
                vec[i].base = rte_pktmbuf_mtod(nseg, void *);
                vec[i].iova = rte_pktmbuf_iova(nseg);
+               vec[i].tot_len = mb->buf_len - rte_pktmbuf_headroom(mb) - ofs;
 
                seglen = nseg->data_len;
                if (left <= seglen) {