diff options
| author | Ariel Levkovich <lariel@mellanox.com> | 2018-05-13 14:33:32 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-05-17 06:32:55 +0300 |
| commit | b04f0f036ac17b879e4d8c83f6503a19322ddde4 (patch) | |
| tree | e4398796d0440906816656827eb9df18e69362ab /drivers | |
| parent | 0d86bbec71b283803f844b35d50dba977be2db4a (diff) | |
| download | linux-b04f0f036ac17b879e4d8c83f6503a19322ddde4.tar.xz | |
IB/uverbs: Introduce a MPLS steering match filter
Add a new MPLS steering match filter that can match against
a single MPLS tag field.
Since the MPLS header can reside in different locations in the packet's
protocol stack as well as be encapsulated with a tunnel protocol, it
is required to know the exact location of the header in the protocol
stack.
Therefore, when including the MPLS protocol spec in the specs list,
it is mandatory to provide the list in an ordered manner, so
that it represents the actual header order in a matching packet.
Drivers that process the spec list and apply the matching rule
should treat the position of the MPLS spec in the spec list as the
actual location of the MPLS label in the packet's protocol stack.
Reviewed-by: Mark Bloch <markb@mellanox.com>
Signed-off-by: Ariel Levkovich <lariel@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/core/uverbs_cmd.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/infiniband/core/uverbs_cmd.c b/drivers/infiniband/core/uverbs_cmd.c index 82c8c8b3e10b..e74262ee104c 100644 --- a/drivers/infiniband/core/uverbs_cmd.c +++ b/drivers/infiniband/core/uverbs_cmd.c @@ -2959,6 +2959,17 @@ int ib_uverbs_kern_spec_to_ib_spec_filter(enum ib_flow_spec_type type, memcpy(&ib_spec->gre.val, kern_spec_val, actual_filter_sz); memcpy(&ib_spec->gre.mask, kern_spec_mask, actual_filter_sz); break; + case IB_FLOW_SPEC_MPLS: + ib_filter_sz = offsetof(struct ib_flow_mpls_filter, real_sz); + actual_filter_sz = spec_filter_size(kern_spec_mask, + kern_filter_sz, + ib_filter_sz); + if (actual_filter_sz <= 0) + return -EINVAL; + ib_spec->mpls.size = sizeof(struct ib_flow_spec_mpls); + memcpy(&ib_spec->mpls.val, kern_spec_val, actual_filter_sz); + memcpy(&ib_spec->mpls.mask, kern_spec_mask, actual_filter_sz); + break; default: return -EINVAL; } @@ -3518,6 +3529,7 @@ int ib_uverbs_ex_create_flow(struct ib_uverbs_file *file, uflow_res); if (err) goto err_free; + flow_attr->size += ((union ib_flow_spec *) ib_spec)->size; cmd.flow_attr.size -= ((struct ib_uverbs_flow_spec *)kern_spec)->size; |