[dpdk-dev] [PATCH 6/9 v3] raw/dpaa2_cmdif: add retry and timeout in packet enqueue API

[Nipun Gupta]

This patch adds retry in the DPAA2 CMDIF packet enqueue API

Fixes: 53c71586c789 ("raw/dpaa2_cmdif: support enqueue/dequeue operations")
Cc: sta...@dpdk.org

Signed-off-by: Nipun Gupta <nipun.gu...@nxp.com>
Acked-by: Hemant Agrawal <hemant.agra...@nxp.com>
---
 drivers/raw/dpaa2_cmdif/dpaa2_cmdif.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/raw/dpaa2_cmdif/dpaa2_cmdif.c 
b/drivers/raw/dpaa2_cmdif/dpaa2_cmdif.c
index 3f42da1fe..ae53114b5 100644
--- a/drivers/raw/dpaa2_cmdif/dpaa2_cmdif.c
+++ b/drivers/raw/dpaa2_cmdif/dpaa2_cmdif.c
@@ -62,6 +62,7 @@ dpaa2_cmdif_enqueue_bufs(struct rte_rawdev *dev,
        struct qbman_fd fd;
        struct qbman_eq_desc eqdesc;
        struct qbman_swp *swp;
+       uint32_t retry_count = 0;
        int ret;
 
        RTE_SET_USED(count);
@@ -100,11 +101,15 @@ dpaa2_cmdif_enqueue_bufs(struct rte_rawdev *dev,
                ret = qbman_swp_enqueue_multiple(swp, &eqdesc, &fd, NULL, 1);
                if (ret < 0 && ret != -EBUSY)
                        DPAA2_CMDIF_ERR("Transmit failure with err: %d\n", ret);
-       } while (ret == -EBUSY);
+               retry_count++;
+       } while ((ret == -EBUSY) && (retry_count < DPAA2_MAX_TX_RETRY_COUNT));
+
+       if (ret < 0)
+               return ret;
 
        DPAA2_CMDIF_DP_DEBUG("Successfully transmitted a packet\n");
 
-       return 0;
+       return 1;
 }
 
 static int
-- 
2.17.1