[dpdk-stable] [PATCH v1 1/8] bus/fslmc: fix atomic queues on nxp lx2 platform

[dpdk-stable] [PATCH v1 1/8] bus/fslmc: fix atomic queues on nxp lx2 platform

[Sachin Saxena (OSS)]

From: Youri Querry <youri.querry_1@nxp.com>

Traffic was stalling after few packet while running l2fwd-event
in atomic mode on LX2 platform. It was due to wrong dca setting
while enqueuing packets to EQCR.
This patch fixes the issue by writing correct dca setting.

Fixes: 1b49352f41be ("bus/fslmc: rename portal pi index to consumer index")
Cc: stable@dpdk.org

Signed-off-by: Youri Querry <youri.querry_1@nxp.com>
Signed-off-by: Rohit Raj <rohit.raj@nxp.com>
---
 drivers/bus/fslmc/qbman/qbman_portal.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/fslmc/qbman/qbman_portal.c b/drivers/bus/fslmc/qbman/qbman_portal.c
index 0a2af7be4..77c9d508c 100644
--- a/drivers/bus/fslmc/qbman/qbman_portal.c
+++ b/drivers/bus/fslmc/qbman/qbman_portal.c
@@ -1201,6 +1201,8 @@ static int qbman_swp_enqueue_multiple_mem_back(struct qbman_swp *s,
 				QBMAN_CENA_SWP_EQCR(eqcr_pi & half_mask));
 		memcpy(&p[1], &cl[1], 28);
 		memcpy(&p[8], &fd[i], sizeof(*fd));
+		p[0] = cl[0] | s->eqcr.pi_vb;
+
 		if (flags && (flags[i] & QBMAN_ENQUEUE_FLAG_DCA)) {
 			struct qbman_eq_desc *d = (struct qbman_eq_desc *)p;
 
@@ -1208,7 +1210,6 @@ static int qbman_swp_enqueue_multiple_mem_back(struct qbman_swp *s,
 				((flags[i]) & QBMAN_EQCR_DCA_IDXMASK);
 		}
 		eqcr_pi++;
-		p[0] = cl[0] | s->eqcr.pi_vb;
 
 		if (!(eqcr_pi & half_mask))
 			s->eqcr.pi_vb ^= QB_VALID_BIT;
-- 
2.28.0