net/mlx5: add new memory region support

[dpdk.git] / drivers / net / mlx5 / mlx5_ethdev.c

diff --git a/drivers/net/mlx5/mlx5_ethdev.c b/drivers/net/mlx5/mlx5_ethdev.c
index 0ecae3f..898b2e5 100644 (file)
--- a/drivers/net/mlx5/mlx5_ethdev.c
+++ b/drivers/net/mlx5/mlx5_ethdev.c
@@ -34,6 +34,7 @@
 #include <rte_interrupts.h>
 #include <rte_malloc.h>
 #include <rte_string_fns.h>
+#include <rte_rwlock.h>
 
 #include "mlx5.h"
 #include "mlx5_glue.h"
@@ -391,6 +392,21 @@ mlx5_dev_configure(struct rte_eth_dev *dev)
                if (++j == rxqs_n)
                        j = 0;
        }
+       /*
+        * Once the device is added to the list of memory event callback, its
+        * global MR cache table cannot be expanded on the fly because of
+        * deadlock. If it overflows, lookup should be done by searching MR list
+        * linearly, which is slow.
+        */
+       if (mlx5_mr_btree_init(&priv->mr.cache, MLX5_MR_BTREE_CACHE_N * 2,
+                              dev->device->numa_node)) {
+               /* rte_errno is already set. */
+               return -rte_errno;
+       }
+       rte_rwlock_write_lock(&mlx5_shared_data->mem_event_rwlock);
+       LIST_INSERT_HEAD(&mlx5_shared_data->mem_event_cb_list,
+                        priv, mem_event_cb);
+       rte_rwlock_write_unlock(&mlx5_shared_data->mem_event_rwlock);
        return 0;
 }