[dpdk-dev] [PATCH v2 4/4] crypto/scheduler: add minimum head/tailroom requirement

[Anoob Joseph]

Minimum head/tailroom requirement for each PMD has to be considered
while populating the dev_info.

Signed-off-by: Anoob Joseph <anoob.jos...@caviumnetworks.com>
---
v2:
* Added this patch

 drivers/crypto/scheduler/scheduler_pmd_ops.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/drivers/crypto/scheduler/scheduler_pmd_ops.c 
b/drivers/crypto/scheduler/scheduler_pmd_ops.c
index 147dc51..984ea8c 100644
--- a/drivers/crypto/scheduler/scheduler_pmd_ops.c
+++ b/drivers/crypto/scheduler/scheduler_pmd_ops.c
@@ -323,6 +323,8 @@ scheduler_pmd_info_get(struct rte_cryptodev *dev,
        struct scheduler_ctx *sched_ctx = dev->data->dev_private;
        uint32_t max_nb_sessions = sched_ctx->nb_slaves ?
                        UINT32_MAX : RTE_CRYPTODEV_PMD_DEFAULT_MAX_NB_SESSIONS;
+       uint16_t headroom_sz = 0;
+       uint16_t tailroom_sz = 0;
        uint32_t i;
 
        if (!dev_info)
@@ -342,12 +344,26 @@ scheduler_pmd_info_get(struct rte_cryptodev *dev,
                                max_nb_sessions ?
                                slave_info.sym.max_nb_sessions :
                                max_nb_sessions;
+
+               /* Get the max headroom requirement among slave PMDs */
+               headroom_sz = slave_info.min_mbuf_headroom_req >
+                               headroom_sz ?
+                               slave_info.min_mbuf_headroom_req :
+                               headroom_sz;
+
+               /* Get the max tailroom requirement among slave PMDs */
+               tailroom_sz = slave_info.min_mbuf_tailroom_req >
+                               tailroom_sz ?
+                               slave_info.min_mbuf_tailroom_req :
+                               tailroom_sz;
        }
 
        dev_info->driver_id = dev->driver_id;
        dev_info->feature_flags = dev->feature_flags;
        dev_info->capabilities = sched_ctx->capabilities;
        dev_info->max_nb_queue_pairs = sched_ctx->max_nb_queue_pairs;
+       dev_info->min_mbuf_headroom_req = headroom_sz;
+       dev_info->min_mbuf_tailroom_req = tailroom_sz;
        dev_info->sym.max_nb_sessions = max_nb_sessions;
 }
 
-- 
2.7.4