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From: Yishai Hadas <yishaih@mellanox.com>
To: linux-rdma@vger.kernel.org, jgg@mellanox.com, dledford@redhat.com
Cc: saeedm@mellanox.com, yishaih@mellanox.com, maorg@mellanox.com,
	michaelgur@mellanox.com, netdev@vger.kernel.org
Subject: [PATCH rdma-next 09/10] RDMA/core: Add the core support field to METHOD_GET_CONTEXT
Date: Wed,  8 Jan 2020 20:05:39 +0200
Message-ID: <1578506740-22188-10-git-send-email-yishaih@mellanox.com> (raw)
In-Reply-To: <1578506740-22188-1-git-send-email-yishaih@mellanox.com>

From: Michael Guralnik <michaelgur@mellanox.com>

Add the core support field to METHOD_GET_CONTEXT, this field should
represent capabilities that are not device-specific.

Return support for optional access flags for memory regions. User-space
will use this capability to mask the optional access flags for
unsupporting kernels.

Signed-off-by: Michael Guralnik <michaelgur@mellanox.com>
Signed-off-by: Yishai Hadas <yishaih@mellanox.com>
---
 drivers/infiniband/core/uverbs_std_types_device.c | 8 ++++++++
 include/uapi/rdma/ib_user_ioctl_cmds.h            | 1 +
 include/uapi/rdma/ib_user_ioctl_verbs.h           | 4 ++++
 3 files changed, 13 insertions(+)

diff --git a/drivers/infiniband/core/uverbs_std_types_device.c b/drivers/infiniband/core/uverbs_std_types_device.c
index 2c59435..ae4a59d 100644
--- a/drivers/infiniband/core/uverbs_std_types_device.c
+++ b/drivers/infiniband/core/uverbs_std_types_device.c
@@ -204,6 +204,7 @@ static int UVERBS_HANDLER(UVERBS_METHOD_GET_CONTEXT)(
 	struct uverbs_attr_bundle *attrs)
 {
 	u32 num_comp = attrs->ufile->device->num_comp_vectors;
+	u64 core_support = IB_UVERBS_CORE_SUPPORT_OPTIONAL_MR_ACCESS;
 	int ret;
 
 	ret = uverbs_copy_to(attrs, UVERBS_ATTR_GET_CONTEXT_NUM_COMP_VECTORS,
@@ -211,6 +212,11 @@ static int UVERBS_HANDLER(UVERBS_METHOD_GET_CONTEXT)(
 	if (IS_UVERBS_COPY_ERR(ret))
 		return ret;
 
+	ret = uverbs_copy_to(attrs, UVERBS_ATTR_GET_CONTEXT_CORE_SUPPORT,
+			     &core_support, sizeof(core_support));
+	if (IS_UVERBS_COPY_ERR(ret))
+		return ret;
+
 	ret = ib_alloc_ucontext(attrs);
 	if (ret)
 		return ret;
@@ -227,6 +233,8 @@ static int UVERBS_HANDLER(UVERBS_METHOD_GET_CONTEXT)(
 	UVERBS_METHOD_GET_CONTEXT,
 	UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_GET_CONTEXT_NUM_COMP_VECTORS,
 			    UVERBS_ATTR_TYPE(u32), UA_OPTIONAL),
+	UVERBS_ATTR_PTR_OUT(UVERBS_ATTR_GET_CONTEXT_CORE_SUPPORT,
+			    UVERBS_ATTR_TYPE(u64), UA_OPTIONAL),
 	UVERBS_ATTR_UHW());
 
 DECLARE_UVERBS_NAMED_METHOD(
diff --git a/include/uapi/rdma/ib_user_ioctl_cmds.h b/include/uapi/rdma/ib_user_ioctl_cmds.h
index da6c63c..d4ddbe4 100644
--- a/include/uapi/rdma/ib_user_ioctl_cmds.h
+++ b/include/uapi/rdma/ib_user_ioctl_cmds.h
@@ -84,6 +84,7 @@ enum uverbs_attrs_query_port_cmd_attr_ids {
 
 enum uverbs_attrs_get_context_attr_ids {
 	UVERBS_ATTR_GET_CONTEXT_NUM_COMP_VECTORS,
+	UVERBS_ATTR_GET_CONTEXT_CORE_SUPPORT,
 };
 
 enum uverbs_attrs_create_cq_cmd_attr_ids {
diff --git a/include/uapi/rdma/ib_user_ioctl_verbs.h b/include/uapi/rdma/ib_user_ioctl_verbs.h
index 2a165f4..a640bb8 100644
--- a/include/uapi/rdma/ib_user_ioctl_verbs.h
+++ b/include/uapi/rdma/ib_user_ioctl_verbs.h
@@ -44,6 +44,10 @@
 #define IB_UVERBS_ACCESS_OPTIONAL_FIRST (1 << 20)
 #define IB_UVERBS_ACCESS_OPTIONAL_LAST (1 << 29)
 
+enum ib_uverbs_core_support {
+	IB_UVERBS_CORE_SUPPORT_OPTIONAL_MR_ACCESS = 1 << 0,
+};
+
 enum ib_uverbs_access_flags {
 	IB_UVERBS_ACCESS_LOCAL_WRITE = 1 << 0,
 	IB_UVERBS_ACCESS_REMOTE_WRITE = 1 << 1,
-- 
1.8.3.1


  parent reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-01-08 18:05 [PATCH rdma-next 00/10] Relaxed ordering memory regions Yishai Hadas
2020-01-08 18:05 ` [PATCH rdma-next 01/10] net/mlx5: Expose relaxed ordering bits Yishai Hadas
2020-01-08 18:05 ` [PATCH rdma-next 02/10] RDMA/core: Add UVERBS_METHOD_ASYNC_EVENT_ALLOC Yishai Hadas
2020-01-08 18:05 ` [PATCH rdma-next 03/10] RDMA/core: Remove ucontext_lock from the uverbs_destry_ufile_hw() path Yishai Hadas
2020-01-08 18:05 ` [PATCH rdma-next 04/10] RDMA/uverbs: Add ioctl command to get a device context Yishai Hadas
2020-01-08 18:05 ` [PATCH rdma-next 05/10] RDMA/uverbs: Verify MR access flags Yishai Hadas
2020-01-08 18:05 ` [PATCH rdma-next 06/10] RDMA/core: Add optional access flags range Yishai Hadas
2020-01-08 18:05 ` [PATCH rdma-next 07/10] RDMA/efa: Allow passing of optional access flags for MR registration Yishai Hadas
2020-01-21 16:37   ` Gal Pressman
2020-01-21 16:57     ` Yishai Hadas
2020-01-22  7:51       ` Gal Pressman
2020-01-08 18:05 ` [PATCH rdma-next 08/10] RDMA/uverbs: Add new relaxed ordering memory region access flag Yishai Hadas
2020-01-09  9:38   ` Sergei Shtylyov
2020-01-15 18:05   ` Jason Gunthorpe
2020-01-08 18:05 ` Yishai Hadas [this message]
2020-01-08 18:05 ` [PATCH rdma-next 10/10] RDMA/mlx5: Set relaxed ordering when requested Yishai Hadas
2020-01-15 18:08 ` [PATCH rdma-next 00/10] Relaxed ordering memory regions Jason Gunthorpe
2020-01-16  9:20   ` Leon Romanovsky
2020-01-16 20:11     ` Jason Gunthorpe

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