Virtio access region(VAR) is the UAR that allocated for virtio emulation
access.
Add rdma-core operations to allocate and free VAR.
Signed-off-by: Matan Azrad <ma...@mellanox.com>
Acked-by: Viacheslav Ovsiienko <viachesl...@mellanox.com>
---
drivers/common/mlx5/Makefile | 5 +++++
drivers/common/mlx5/meson.build | 1 +
drivers/common/mlx5/mlx5_glue.c | 26 ++++++++++++++++++++++++++
drivers/common/mlx5/mlx5_glue.h | 8 ++++++++
4 files changed, 40 insertions(+)
diff --git a/drivers/common/mlx5/Makefile b/drivers/common/mlx5/Makefile
index 7110231..d1de3ec 100644
--- a/drivers/common/mlx5/Makefile
+++ b/drivers/common/mlx5/Makefile
@@ -174,6 +174,11 @@ mlx5_autoconf.h.new: $(RTE_SDK)/buildtools/auto-config-h.sh
enum MLX5_MMAP_GET_NC_PAGES_CMD \
$(AUTOCONF_OUTPUT)
$Q sh -- '$<' '$@' \
+ HAVE_IBV_VAR \
+ infiniband/mlx5dv.h \
+ func mlx5dv_alloc_var \
+ $(AUTOCONF_OUTPUT)
+ $Q sh -- '$<' '$@' \
HAVE_ETHTOOL_LINK_MODE_25G \
/usr/include/linux/ethtool.h \
enum ETHTOOL_LINK_MODE_25000baseCR_Full_BIT \
diff --git a/drivers/common/mlx5/meson.build b/drivers/common/mlx5/meson.build
index 76ca7d7..3e130cb 100644
--- a/drivers/common/mlx5/meson.build
+++ b/drivers/common/mlx5/meson.build
@@ -120,6 +120,7 @@ if build
'MLX5DV_DR_DOMAIN_TYPE_FDB' ],
[ 'HAVE_MLX5DV_DR_VLAN', 'infiniband/mlx5dv.h',
'mlx5dv_dr_action_create_push_vlan' ],
+ [ 'HAVE_IBV_VAR', 'infiniband/mlx5dv.h', 'mlx5dv_alloc_var' ],
[ 'HAVE_SUPPORTED_40000baseKR4_Full', 'linux/ethtool.h',
'SUPPORTED_40000baseKR4_Full' ],
[ 'HAVE_SUPPORTED_40000baseCR4_Full', 'linux/ethtool.h',
diff --git a/drivers/common/mlx5/mlx5_glue.c b/drivers/common/mlx5/mlx5_glue.c
index 5691636..27cf33c 100644
--- a/drivers/common/mlx5/mlx5_glue.c
+++ b/drivers/common/mlx5/mlx5_glue.c
@@ -1160,6 +1160,30 @@
#endif
}
+static struct mlx5dv_var *
+mlx5_glue_dv_alloc_var(struct ibv_context *context, uint32_t flags)
+{
+#ifdef HAVE_IBV_VAR
+ return mlx5dv_alloc_var(context, flags);
+#else
+ (void)context;
+ (void)flags;
+ errno = ENOTSUP;
+ return NULL;
+#endif
+}
+
+static void
+mlx5_glue_dv_free_var(struct mlx5dv_var *var)
+{
+#ifdef HAVE_IBV_VAR
+ mlx5dv_free_var(var);
+#else
+ (void)var;
+ errno = ENOTSUP;
+#endif
+}
+
alignas(RTE_CACHE_LINE_SIZE)
const struct mlx5_glue *mlx5_glue = &(const struct mlx5_glue){
.version = MLX5_GLUE_VERSION,
@@ -1267,4 +1291,6 @@
.devx_get_event = mlx5_glue_devx_get_event,
.devx_alloc_uar = mlx5_glue_devx_alloc_uar,
.devx_free_uar = mlx5_glue_devx_free_uar,
+ .dv_alloc_var = mlx5_glue_dv_alloc_var,
+ .dv_free_var = mlx5_glue_dv_free_var,
};
diff --git a/drivers/common/mlx5/mlx5_glue.h b/drivers/common/mlx5/mlx5_glue.h
index 7d9256e..6238b43 100644
--- a/drivers/common/mlx5/mlx5_glue.h
+++ b/drivers/common/mlx5/mlx5_glue.h
@@ -93,6 +93,11 @@
#define MLX5DV_DEVX_CREATE_EVENT_CHANNEL_FLAGS_OMIT_EV_DATA 1
#endif
+#ifndef HAVE_IBV_VAR
+struct mlx5dv_var { uint32_t page_id; uint32_t length; off_t mmap_off;
+ uint64_t comp_mask; };
+#endif
+
/* LIB_GLUE_VERSION must be updated every time this structure is modified. */
struct mlx5_glue {
const char *version;
@@ -231,6 +236,9 @@ struct mlx5_glue {
int (*dv_destroy_flow)(void *flow);
int (*dv_destroy_flow_matcher)(void *matcher);
struct ibv_context *(*dv_open_device)(struct ibv_device *device);
+ struct mlx5dv_var *(*dv_alloc_var)(struct ibv_context *context,
+ uint32_t flags);
+ void (*dv_free_var)(struct mlx5dv_var *var);
struct mlx5dv_devx_uar *(*devx_alloc_uar)(struct ibv_context *context,
uint32_t flags);
void (*devx_free_uar)(struct mlx5dv_devx_uar *devx_uar);
--
1.8.3.1
