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Date: Tue, 24 Jul 2018 14:13:00 -0600
From: Jason Gunthorpe <jgg@...pe.ca>
To: Leon Romanovsky <leon@...nel.org>
Cc: Doug Ledford <dledford@...hat.com>,
RDMA mailing list <linux-rdma@...r.kernel.org>,
Yishai Hadas <yishaih@...lanox.com>,
Saeed Mahameed <saeedm@...lanox.com>,
linux-netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH rdma-next v2 0/8] Support mlx5 flow steering with RAW data
On Tue, Jul 24, 2018 at 08:56:09AM +0300, Leon Romanovsky wrote:
> On Mon, Jul 23, 2018 at 08:42:36PM -0600, Jason Gunthorpe wrote:
> > On Mon, Jul 23, 2018 at 03:25:04PM +0300, Leon Romanovsky wrote:
> > > From: Leon Romanovsky <leonro@...lanox.com>
> > >
> > > Changelog:
> > > v1->v2:
> > > * Fix matcher to use the correct size.
> > > * Rephrase commit log of the first patch.
> > > v0->v1:
> > > * Fixed ADD_UVERBS_ATTRIBUTES_SIMPLE macro to pass the real address.
> > > ?* Replaced UA_ALLOC_AND_COPY to regular copy_from
> > > * Added UVERBS_ATTR_NO_DATA new macro for cleaner code.
> > > * Used ib_dev from uobj when it exists.
> > > * ib_is_destroy_retryable was replaced by ib_destroy_usecnt
> > >
> > > >From Yishai:
> > >
> > > This series introduces vendor create and destroy flow methods on the
> > > uverbs flow object by using the KABI infra-structure.
> > >
> > > It's done in a way that enables the driver to get its specific device
> > > attributes in a raw data to match its underlay specification while still
> > > using the generic ib_flow object for cleanup and code sharing.
> > >
> > > In addition, a specific mlx5 matcher object and its create/destroy
> > > methods were introduced. This object matches the underlay flow steering
> > > mask specification and is used as part of mlx5 create flow input data.
> > >
> > > This series supports IB_QP/TIR as its flow steering destination as
> > > applicable today via the ib_create_flow API, however, it adds also an
> > > option to work with DEVX object which its destination can be both TIR
> > > and flow table.
> > >
> > > Few changes were done in the mlx5 core layer to support forward
> > > compatible for the device specification raw data and to support flow
> > > table when the DEVX destination is used.
> > >
> > > As part of this series the default IB destroy handler
> > > (i.e. uverbs_destroy_def_handler()) was exposed from IB core to be
> > > used by the drivers and existing code was refactored to use it.
> > >
> > > Thanks
> > >
> > > Yishai Hadas (8):
> > > net/mlx5: Add forward compatible support for the FTE match data
> > > net/mlx5: Add support for flow table destination number
> > > IB/mlx5: Introduce flow steering matcher object
> > > IB: Consider ib_flow creation by the KABI infrastructure
> > > IB/mlx5: Introduce vendor create and destroy flow methods
> > > IB/mlx5: Support adding flow steering rule by raw data
> > > IB/mlx5: Add support for a flow table destination
> > > IB/mlx5: Expose vendor flow trees
> >
> > This seems fine to me. Can you send the mlx5 shared branch for the
> > first two patches?
>
> I applied two first patches with Acked-by from Saeed to mlx5-next
>
> 664000b6bb43 net/mlx5: Add support for flow table destination number
> 2aada6c0c96e net/mlx5: Add forward compatible support for the FTE match data
Okay, I merged the mlx5 branch and applied the series to for-next.
There was a trivial build failure with !CONFIG_INFINIBAND_USER_ACCESS
and a bunch of annoying check patch warnings regarding tabs and
leading white space. While I was fixing those I fixed the long lines
too, they had no reason to be long.
Also, I would like to keep the specs consistently formatted according
to clang-format with 'BinPackParameters: true', so I reflowed them as
well.
Please check and let me know if I made an error, diff is below.
Jason
diff --git a/drivers/infiniband/hw/mlx5/flow.c b/drivers/infiniband/hw/mlx5/flow.c
index c94ee1a43e2c3f..ee398a9b5f26b0 100644
--- a/drivers/infiniband/hw/mlx5/flow.c
+++ b/drivers/infiniband/hw/mlx5/flow.c
@@ -50,8 +50,8 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
int inlen;
bool dest_devx, dest_qp;
struct ib_qp *qp = NULL;
- struct ib_uobject *uobj = uverbs_attr_get_uobject(attrs,
- MLX5_IB_ATTR_CREATE_FLOW_HANDLE);
+ struct ib_uobject *uobj =
+ uverbs_attr_get_uobject(attrs, MLX5_IB_ATTR_CREATE_FLOW_HANDLE);
struct mlx5_ib_dev *dev = to_mdev(uobj->context->device);
if (!capable(CAP_NET_RAW))
@@ -66,7 +66,8 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
return -EINVAL;
if (dest_devx) {
- devx_obj = uverbs_attr_get_obj(attrs, MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX);
+ devx_obj = uverbs_attr_get_obj(
+ attrs, MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX);
if (IS_ERR(devx_obj))
return PTR_ERR(devx_obj);
@@ -97,8 +98,8 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_CREATE_FLOW)(
if (dev->rep)
return -ENOTSUPP;
- cmd_in = uverbs_attr_get_alloced_ptr(attrs,
- MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
+ cmd_in = uverbs_attr_get_alloced_ptr(
+ attrs, MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
inlen = uverbs_attr_get_len(attrs,
MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE);
fs_matcher = uverbs_attr_get_obj(attrs,
@@ -127,9 +128,9 @@ static int flow_matcher_cleanup(struct ib_uobject *uobject,
return 0;
}
-static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_MATCHER_CREATE)(struct ib_device *ib_dev,
- struct ib_uverbs_file *file,
- struct uverbs_attr_bundle *attrs)
+static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_MATCHER_CREATE)(
+ struct ib_device *ib_dev, struct ib_uverbs_file *file,
+ struct uverbs_attr_bundle *attrs)
{
struct ib_uobject *uobj = uverbs_attr_get_uobject(
attrs, MLX5_IB_ATTR_FLOW_MATCHER_CREATE_HANDLE);
@@ -141,16 +142,16 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_FLOW_MATCHER_CREATE)(struct ib_device *
if (!obj)
return -ENOMEM;
- obj->mask_len = uverbs_attr_get_len(attrs,
- MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK);
+ obj->mask_len = uverbs_attr_get_len(
+ attrs, MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK);
err = uverbs_copy_from(&obj->matcher_mask,
attrs,
MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK);
if (err)
goto end;
- obj->flow_type = uverbs_attr_get_enum_id(attrs,
- MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE);
+ obj->flow_type = uverbs_attr_get_enum_id(
+ attrs, MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE);
if (obj->flow_type == MLX5_IB_FLOW_TYPE_NORMAL) {
err = uverbs_copy_from(&obj->priority,
@@ -182,21 +183,22 @@ DECLARE_UVERBS_NAMED_METHOD(
UVERBS_OBJECT_FLOW,
UVERBS_ACCESS_NEW,
UA_MANDATORY),
- UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE,
- UVERBS_ATTR_SIZE(1, sizeof(struct mlx5_ib_match_params)),
- UA_MANDATORY,
- UA_ALLOC_AND_COPY),
+ UVERBS_ATTR_PTR_IN(
+ MLX5_IB_ATTR_CREATE_FLOW_MATCH_VALUE,
+ UVERBS_ATTR_SIZE(1, sizeof(struct mlx5_ib_match_params)),
+ UA_MANDATORY,
+ UA_ALLOC_AND_COPY),
UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_MATCHER,
MLX5_IB_OBJECT_FLOW_MATCHER,
UVERBS_ACCESS_READ,
UA_MANDATORY),
- UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_DEST_QP, UVERBS_OBJECT_QP,
+ UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_DEST_QP,
+ UVERBS_OBJECT_QP,
UVERBS_ACCESS_READ),
UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_DEST_DEVX,
MLX5_IB_OBJECT_DEVX_OBJ,
UVERBS_ACCESS_READ));
-
DECLARE_UVERBS_NAMED_METHOD_DESTROY(
MLX5_IB_METHOD_DESTROY_FLOW,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_CREATE_FLOW_HANDLE,
@@ -212,36 +214,34 @@ ADD_UVERBS_METHODS(mlx5_ib_fs,
DECLARE_UVERBS_NAMED_METHOD(
MLX5_IB_METHOD_FLOW_MATCHER_CREATE,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_FLOW_MATCHER_CREATE_HANDLE,
- MLX5_IB_OBJECT_FLOW_MATCHER,
- UVERBS_ACCESS_NEW,
- UA_MANDATORY),
+ MLX5_IB_OBJECT_FLOW_MATCHER,
+ UVERBS_ACCESS_NEW,
+ UA_MANDATORY),
UVERBS_ATTR_PTR_IN(
MLX5_IB_ATTR_FLOW_MATCHER_MATCH_MASK,
UVERBS_ATTR_SIZE(1, sizeof(struct mlx5_ib_match_params)),
UA_MANDATORY),
- UVERBS_ATTR_ENUM_IN(
- MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE,
- mlx5_ib_flow_type,
- UA_MANDATORY),
- UVERBS_ATTR_PTR_IN(
- MLX5_IB_ATTR_FLOW_MATCHER_MATCH_CRITERIA,
- UVERBS_ATTR_TYPE(u8),
- UA_MANDATORY));
+ UVERBS_ATTR_ENUM_IN(MLX5_IB_ATTR_FLOW_MATCHER_FLOW_TYPE,
+ mlx5_ib_flow_type,
+ UA_MANDATORY),
+ UVERBS_ATTR_PTR_IN(MLX5_IB_ATTR_FLOW_MATCHER_MATCH_CRITERIA,
+ UVERBS_ATTR_TYPE(u8),
+ UA_MANDATORY));
DECLARE_UVERBS_NAMED_METHOD_DESTROY(
MLX5_IB_METHOD_FLOW_MATCHER_DESTROY,
UVERBS_ATTR_IDR(MLX5_IB_ATTR_FLOW_MATCHER_DESTROY_HANDLE,
- MLX5_IB_OBJECT_FLOW_MATCHER,
- UVERBS_ACCESS_DESTROY,
- UA_MANDATORY));
+ MLX5_IB_OBJECT_FLOW_MATCHER,
+ UVERBS_ACCESS_DESTROY,
+ UA_MANDATORY));
DECLARE_UVERBS_NAMED_OBJECT(MLX5_IB_OBJECT_FLOW_MATCHER,
- UVERBS_TYPE_ALLOC_IDR(flow_matcher_cleanup),
- &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_MATCHER_CREATE),
- &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_MATCHER_DESTROY));
+ UVERBS_TYPE_ALLOC_IDR(flow_matcher_cleanup),
+ &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_MATCHER_CREATE),
+ &UVERBS_METHOD(MLX5_IB_METHOD_FLOW_MATCHER_DESTROY));
DECLARE_UVERBS_OBJECT_TREE(flow_objects,
- &UVERBS_OBJECT(MLX5_IB_OBJECT_FLOW_MATCHER));
+ &UVERBS_OBJECT(MLX5_IB_OBJECT_FLOW_MATCHER));
int mlx5_ib_get_flow_trees(const struct uverbs_object_tree_def **root)
{
diff --git a/drivers/infiniband/hw/mlx5/mlx5_ib.h b/drivers/infiniband/hw/mlx5/mlx5_ib.h
index 5f08b69f8a4f60..ec8410d3c4eb2a 100644
--- a/drivers/infiniband/hw/mlx5/mlx5_ib.h
+++ b/drivers/infiniband/hw/mlx5/mlx5_ib.h
@@ -1232,11 +1232,9 @@ int mlx5_ib_devx_create(struct mlx5_ib_dev *dev,
void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev,
struct mlx5_ib_ucontext *context);
const struct uverbs_object_tree_def *mlx5_ib_get_devx_tree(void);
-struct mlx5_ib_flow_handler *mlx5_ib_raw_fs_rule_add(struct mlx5_ib_dev *dev,
- struct mlx5_ib_flow_matcher *fs_matcher,
- void *cmd_in,
- int inlen, int dest_id,
- int dest_type);
+struct mlx5_ib_flow_handler *mlx5_ib_raw_fs_rule_add(
+ struct mlx5_ib_dev *dev, struct mlx5_ib_flow_matcher *fs_matcher,
+ void *cmd_in, int inlen, int dest_id, int dest_type);
bool mlx5_ib_devx_is_flow_dest(void *obj, int *dest_id, int *dest_type);
int mlx5_ib_get_flow_trees(const struct uverbs_object_tree_def **root);
#else
@@ -1247,17 +1245,22 @@ static inline void mlx5_ib_devx_destroy(struct mlx5_ib_dev *dev,
struct mlx5_ib_ucontext *context) {}
static inline const struct uverbs_object_tree_def *
mlx5_ib_get_devx_tree(void) { return NULL; }
-static inline struct mlx5_ib_flow_handler *
-mlx5_ib_raw_fs_rule_add(struct mlx5_ib_dev *dev,
- struct mlx5_ib_flow_matcher *fs_matcher,
- void *cmd_in,
- int inlen, int dest_id,
- int dest_type) { return -EOPNOTSUPP; };
-static inline bool
-mlx5_ib_devx_is_flow_dest(void *obj, int *dest_id,
- int *dest_type) { return false; };
+static inline struct mlx5_ib_flow_handler *mlx5_ib_raw_fs_rule_add(
+ struct mlx5_ib_dev *dev, struct mlx5_ib_flow_matcher *fs_matcher,
+ void *cmd_in, int inlen, int dest_id, int dest_type)
+{
+ return ERR_PTR(-EOPNOTSUPP);
+}
+static inline bool mlx5_ib_devx_is_flow_dest(void *obj, int *dest_id,
+ int *dest_type)
+{
+ return false;
+}
static inline int
-mlx5_ib_get_flow_trees(const struct uverbs_object_tree_def **root) { return 0; };
+mlx5_ib_get_flow_trees(const struct uverbs_object_tree_def **root)
+{
+ return 0;
+}
#endif
static inline void init_query_mad(struct ib_smp *mad)
{
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