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authorMatan Barak <matanb@mellanox.com>2018-03-28 09:27:44 +0300
committerJason Gunthorpe <jgg@mellanox.com>2018-04-04 12:06:24 -0600
commit766d8551ada05326f0cafc5fc0bd32a666cebeed (patch)
tree34173f611ad7a8c9660ccfad3c87e6a07d1bdadd /drivers/infiniband
parent8510020d2916b9f7d8e406aa2fb2d35fbe692f4d (diff)
downloadlinux-766d8551ada05326f0cafc5fc0bd32a666cebeed.tar.bz2
IB/uverbs: Refactor kern_spec_to_ib_spec_filter
The current implementation of kern_spec_to_ib_spec_filter, which takes a uAPI based flow steering specification and creates the respective kernel API flow steering structure, gets a ib_uverbs_flow_spec structure. The new flow_action uAPI gets a match mask and filter from user-space which aren't encoded in the flow steering's ib_uverbs_flow_spec structure. Exporting the logic out of kern_spec_to_ib_spec_filter to get user-space blobs rather than ib_uverbs_flow_spec structure. Reviewed-by: Yishai Hadas <yishaih@mellanox.com> Signed-off-by: Matan Barak <matanb@mellanox.com> Signed-off-by: Leon Romanovsky <leonro@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband')
-rw-r--r--drivers/infiniband/core/uverbs.h6
-rw-r--r--drivers/infiniband/core/uverbs_cmd.c47
2 files changed, 37 insertions, 16 deletions
diff --git a/drivers/infiniband/core/uverbs.h b/drivers/infiniband/core/uverbs.h
index d20828afa05c..0fabedf446fb 100644
--- a/drivers/infiniband/core/uverbs.h
+++ b/drivers/infiniband/core/uverbs.h
@@ -254,6 +254,12 @@ struct ib_uverbs_flow_spec {
};
};
+int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type,
+ const void *kern_spec_mask,
+ const void *kern_spec_val,
+ size_t kern_filter_sz,
+ union ib_flow_spec *ib_spec);
+
extern const struct uverbs_object_def UVERBS_OBJECT(UVERBS_OBJECT_DEVICE);
extern const struct uverbs_object_def UVERBS_OBJECT(UVERBS_OBJECT_PD);
extern const struct uverbs_object_def UVERBS_OBJECT(UVERBS_OBJECT_MR);
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c
index 536d78baacd3..f6ffe18df679 100644
--- a/drivers/infiniband/core/uverbs_cmd.c
+++ b/drivers/infiniband/core/uverbs_cmd.c
@@ -2765,13 +2765,13 @@ static int kern_spec_to_ib_spec_action(struct ib_uverbs_flow_spec *kern_spec,
return 0;
}
-static size_t kern_spec_filter_sz(struct ib_uverbs_flow_spec_hdr *spec)
+static size_t kern_spec_filter_sz(const struct ib_uverbs_flow_spec_hdr *spec)
{
/* Returns user space filter size, includes padding */
return (spec->size - sizeof(struct ib_uverbs_flow_spec_hdr)) / 2;
}
-static ssize_t spec_filter_size(void *kern_spec_filter, u16 kern_filter_size,
+static ssize_t spec_filter_size(const void *kern_spec_filter, u16 kern_filter_size,
u16 ib_real_filter_sz)
{
/*
@@ -2789,28 +2789,21 @@ static ssize_t spec_filter_size(void *kern_spec_filter, u16 kern_filter_size,
return kern_filter_size;
}
-static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec,
- union ib_flow_spec *ib_spec)
+int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type,
+ const void *kern_spec_mask,
+ const void *kern_spec_val,
+ size_t kern_filter_sz,
+ union ib_flow_spec *ib_spec)
{
ssize_t actual_filter_sz;
- ssize_t kern_filter_sz;
ssize_t ib_filter_sz;
- void *kern_spec_mask;
- void *kern_spec_val;
- if (kern_spec->reserved)
- return -EINVAL;
-
- ib_spec->type = kern_spec->type;
-
- kern_filter_sz = kern_spec_filter_sz(&kern_spec->hdr);
/* User flow spec size must be aligned to 4 bytes */
if (kern_filter_sz != ALIGN(kern_filter_sz, 4))
return -EINVAL;
- kern_spec_val = (void *)kern_spec +
- sizeof(struct ib_uverbs_flow_spec_hdr);
- kern_spec_mask = kern_spec_val + kern_filter_sz;
+ ib_spec->type = type;
+
if (ib_spec->type == (IB_FLOW_SPEC_INNER | IB_FLOW_SPEC_VXLAN_TUNNEL))
return -EINVAL;
@@ -2885,6 +2878,28 @@ static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec,
return 0;
}
+static int kern_spec_to_ib_spec_filter(struct ib_uverbs_flow_spec *kern_spec,
+ union ib_flow_spec *ib_spec)
+{
+ ssize_t kern_filter_sz;
+ void *kern_spec_mask;
+ void *kern_spec_val;
+
+ if (kern_spec->reserved)
+ return -EINVAL;
+
+ kern_filter_sz = kern_spec_filter_sz(&kern_spec->hdr);
+
+ kern_spec_val = (void *)kern_spec +
+ sizeof(struct ib_uverbs_flow_spec_hdr);
+ kern_spec_mask = kern_spec_val + kern_filter_sz;
+
+ return ib_uverbs_kern_spec_to_ib_spec_filter(kern_spec->type,
+ kern_spec_mask,
+ kern_spec_val,
+ kern_filter_sz, ib_spec);
+}
+
static int kern_spec_to_ib_spec(struct ib_uverbs_flow_spec *kern_spec,
union ib_flow_spec *ib_spec)
{