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>
---
doc/guides/rel_notes/deprecation.rst | 7 -------
lib/cryptodev/rte_crypto_sym.h | 7 +++++++
2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/doc/guides/rel_notes/deprecation.rst
b/doc/guides/rel_notes/deprecation.rst
index a4e86b31f5..53155459a0 100644
--- a/doc/guides/rel_notes/deprecation.rst
+++ b/doc/guides/rel_notes/deprecation.rst
@@ -188,13 +188,6 @@ 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/lib/cryptodev/rte_crypto_sym.h b/lib/cryptodev/rte_crypto_sym.h
index dcc0bd5933..6be283e83c 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 - rte_pktmbuf_headroom(mb) - ofs;
return 1;
}
/* data spread across segments */
vec[0].len = seglen;
left = len - seglen;
+ vec[0].tot_len = mb->buf_len - rte_pktmbuf_headroom(mb) - ofs;
for (i = 1, nseg = mb->next; nseg != NULL; nseg = nseg->next, i++) {
vec[i].base = rte_pktmbuf_mtod(nseg, void *);
@@ -995,6 +999,8 @@ 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 - rte_pktmbuf_headroom(mb)
+ - ofs;
left = 0;
break;
}
@@ -1002,6 +1008,7 @@ 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_pktmbuf_headroom(mb) - ofs;
}
RTE_ASSERT(left == 0);
--
2.17.1
