This patch is the initial implementation of ibv_alloc/dealloc_parent
domain verbs in the mlx5 driver.
The driver uses internally mlx5_pd structure which its prefix holds
the legacy ibv_pd so that the return ibv_pd can be used with any verb
around that gets a protection domain.
In addition, the driver saves an indication whether this ibv_pd is a
parent domain and as such may hold a thread domain and a pointer to a
previously allocated protection domain.
In downstream patches the mlx5 driver will consider upon getting an
ibv_pd which fields should be used based on the above indicator.
Signed-off-by: Yishai Hadas <yishaih@xxxxxxxxxxxx>
---
providers/mlx5/mlx5.c | 2 ++
providers/mlx5/mlx5.h | 9 +++++++++
providers/mlx5/verbs.c | 23 +++++++++++++++++++++++
3 files changed, 34 insertions(+)
diff --git a/providers/mlx5/mlx5.c b/providers/mlx5/mlx5.c
index 0c073e2..b160373 100644
--- a/providers/mlx5/mlx5.c
+++ b/providers/mlx5/mlx5.c
@@ -1011,6 +1011,8 @@ static int mlx5_init_context(struct verbs_device *vdev,
verbs_set_ctx_op(v_ctx, post_srq_ops, mlx5_post_srq_ops);
verbs_set_ctx_op(v_ctx, alloc_td, mlx5_alloc_td);
verbs_set_ctx_op(v_ctx, dealloc_td, mlx5_dealloc_td);
+ verbs_set_ctx_op(v_ctx, alloc_parent_domain, mlx5_alloc_parent_domain);
+ verbs_set_ctx_op(v_ctx, dealloc_parent_domain, mlx5_dealloc_parent_domain);
memset(&device_attr, 0, sizeof(device_attr));
if (!mlx5_query_device_ex(ctx, NULL, &device_attr,
diff --git a/providers/mlx5/mlx5.h b/providers/mlx5/mlx5.h
index da0aa91..f9b83ad 100644
--- a/providers/mlx5/mlx5.h
+++ b/providers/mlx5/mlx5.h
@@ -319,6 +319,9 @@ struct mlx5_buf {
struct mlx5_pd {
struct ibv_pd ibv_pd;
uint32_t pdn;
+ int is_parent_domain;
+ struct ibv_td *td;
+ struct ibv_pd *protection_domain;
};
struct mlx5_td {
@@ -766,6 +769,12 @@ int mlx5_post_srq_ops(struct ibv_srq *srq,
struct ibv_td *mlx5_alloc_td(struct ibv_context *context);
int mlx5_dealloc_td(struct ibv_td *td);
+struct ibv_pd *mlx5_alloc_parent_domain(struct ibv_context *context,
+ struct ibv_parent_domain_init_attr *attr);
+
+int mlx5_dealloc_parent_domain(struct ibv_pd *parent_domain);
+
+
static inline void *mlx5_find_uidx(struct mlx5_context *ctx, uint32_t uidx)
{
int tind = uidx >> MLX5_UIDX_TABLE_SHIFT;
diff --git a/providers/mlx5/verbs.c b/providers/mlx5/verbs.c
index 8cf14c0..13844b3 100644
--- a/providers/mlx5/verbs.c
+++ b/providers/mlx5/verbs.c
@@ -196,6 +196,29 @@ int mlx5_dealloc_td(struct ibv_td *ib_td)
return 0;
}
+struct ibv_pd *mlx5_alloc_parent_domain(struct ibv_context *context,
+ struct ibv_parent_domain_init_attr *attr)
+{
+ struct mlx5_pd *pd;
+
+ pd = calloc(1, sizeof *pd);
+ if (!pd)
+ return NULL;
+
+ pd->is_parent_domain = 1;
+ pd->td = attr->td;
+ pd->protection_domain= attr->pd;
+
+ pd->ibv_pd.context = context;
+ return &pd->ibv_pd;
+}
+
+int mlx5_dealloc_parent_domain(struct ibv_pd *parent_domain)
+{
+ free(to_mpd(parent_domain));
+ return 0;
+}
+
int mlx5_free_pd(struct ibv_pd *pd)
{
int ret;
--
1.8.3.1
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