crypto/scheduler: add minimum head/tailroom requirement

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

Signed-off-by: Anoob Joseph <anoob.joseph@caviumnetworks.com>
Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>

diff --git a/drivers/crypto/scheduler/scheduler_pmd_ops.c b/drivers/crypto/scheduler/scheduler_pmd_ops.c
index a74216a..778071c 100644 (file)
--- a/drivers/crypto/scheduler/scheduler_pmd_ops.c
+++ b/drivers/crypto/scheduler/scheduler_pmd_ops.c
@@ -322,6 +322,8 @@ scheduler_pmd_info_get(struct rte_cryptodev *dev,
 {
        struct scheduler_ctx *sched_ctx = dev->data->dev_private;
        uint32_t max_nb_sess = 0;
+       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,
                        if (max_nb_sess == 0 || dev_max_sess < max_nb_sess)
                                max_nb_sess = slave_info.sym.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_sess;
 }