Add flag to support scatter-gather for the mbuf
Signed-off-by: Hernan Vargas <hernan.var...@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coque...@redhat.com>
---
drivers/baseband/acc/rte_acc100_pmd.c | 37 ++++++++++++++++++---------
1 file changed, 25 insertions(+), 12 deletions(-)
diff --git a/drivers/baseband/acc/rte_acc100_pmd.c
b/drivers/baseband/acc/rte_acc100_pmd.c
index d2c69866a5..9c1218e1f2 100644
--- a/drivers/baseband/acc/rte_acc100_pmd.c
+++ b/drivers/baseband/acc/rte_acc100_pmd.c
@@ -1347,6 +1347,8 @@ acc101_fcw_ld_fill(struct rte_bbdev_dec_op *op, struct
acc_fcw_ld *fcw,
* Store information about device capabilities
* @param next_triplet
* Index for ACC100 DMA Descriptor triplet
+ * @param scattergather
+ * Flag to support scatter-gather for the mbuf
*
* @return
* Returns index of next triplet on success, other value if lengths of
@@ -1356,12 +1358,16 @@ acc101_fcw_ld_fill(struct rte_bbdev_dec_op *op, struct
acc_fcw_ld *fcw,
static inline int
acc100_dma_fill_blk_type_in(struct acc_dma_req_desc *desc,
struct rte_mbuf **input, uint32_t *offset, uint32_t cb_len,
- uint32_t *seg_total_left, int next_triplet)
+ uint32_t *seg_total_left, int next_triplet,
+ bool scattergather)
{
uint32_t part_len;
struct rte_mbuf *m = *input;
- part_len = (*seg_total_left < cb_len) ? *seg_total_left : cb_len;
+ if (scattergather)
+ part_len = (*seg_total_left < cb_len) ? *seg_total_left :
cb_len;
+ else
+ part_len = cb_len;
cb_len -= part_len;
*seg_total_left -= part_len;
@@ -1452,7 +1458,7 @@ acc100_dma_desc_le_fill(struct rte_bbdev_enc_op *op,
}
next_triplet = acc100_dma_fill_blk_type_in(desc, input, in_offset,
- pad_le_in(in_length_in_bytes, q), seg_total_left,
next_triplet);
+ pad_le_in(in_length_in_bytes, q), seg_total_left,
next_triplet, false);
if (unlikely(next_triplet < 0)) {
rte_bbdev_log(ERR,
"Mismatch between data to process and mbuf data
length in bbdev_op: %p",
@@ -1540,7 +1546,9 @@ acc100_dma_desc_td_fill(struct rte_bbdev_dec_op *op,
}
next_triplet = acc100_dma_fill_blk_type_in(desc, input, in_offset, kw,
- seg_total_left, next_triplet);
+ seg_total_left, next_triplet,
+ check_bit(op->turbo_dec.op_flags,
+ RTE_BBDEV_TURBO_DEC_SCATTER_GATHER));
if (unlikely(next_triplet < 0)) {
rte_bbdev_log(ERR,
"Mismatch between data to process and mbuf data
length in bbdev_op: %p",
@@ -1642,7 +1650,9 @@ acc100_dma_desc_ld_fill(struct rte_bbdev_dec_op *op,
next_triplet = acc100_dma_fill_blk_type_in(desc, input,
in_offset, input_length,
- seg_total_left, next_triplet);
+ seg_total_left, next_triplet,
+ check_bit(op->ldpc_dec.op_flags,
+ RTE_BBDEV_LDPC_DEC_SCATTER_GATHER));
if (unlikely(next_triplet < 0)) {
rte_bbdev_log(ERR,
@@ -2725,8 +2735,9 @@ enqueue_ldpc_dec_one_op_cb(struct acc_queue *q, struct
rte_bbdev_dec_op *op,
fcw = &desc->req.fcw_ld;
q->d->fcw_ld_fill(op, fcw, harq_layout);
- /* Special handling when overusing mbuf */
- if (fcw->rm_e < ACC_MAX_E_MBUF)
+ /* Special handling when using mbuf or not */
+ if (check_bit(op->ldpc_dec.op_flags,
+ RTE_BBDEV_LDPC_DEC_SCATTER_GATHER))
seg_total_left = rte_pktmbuf_data_len(input)
- in_offset;
else
@@ -2802,9 +2813,10 @@ enqueue_ldpc_dec_one_op_tb(struct acc_queue *q, struct
rte_bbdev_dec_op *op,
r = op->ldpc_dec.tb_params.r;
while (mbuf_total_left > 0 && r < c) {
-
- seg_total_left = rte_pktmbuf_data_len(input) - in_offset;
-
+ if (check_bit(op->ldpc_dec.op_flags,
RTE_BBDEV_LDPC_DEC_SCATTER_GATHER))
+ seg_total_left = rte_pktmbuf_data_len(input) -
in_offset;
+ else
+ seg_total_left = op->ldpc_dec.input.length;
/* Set up DMA descriptor */
desc = q->ring_addr + ((q->sw_ring_head + total_enqueued_cbs)
& q->sw_ring_wrap_mask);
@@ -2829,8 +2841,9 @@ enqueue_ldpc_dec_one_op_tb(struct acc_queue *q, struct
rte_bbdev_dec_op *op,
sizeof(desc->req.fcw_td) - 8);
rte_memdump(stderr, "Req Desc.", desc, sizeof(*desc));
#endif
-
- if (seg_total_left == 0) {
+ if (check_bit(op->ldpc_dec.op_flags,
+ RTE_BBDEV_LDPC_DEC_SCATTER_GATHER)
+ && (seg_total_left == 0)) {
/* Go to the next mbuf */
input = input->next;
in_offset = 0;
--
2.37.1
