diff options
| author | Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> | 2017-04-29 14:41:16 -0400 |
|---|---|---|
| committer | Doug Ledford <dledford@redhat.com> | 2017-05-01 14:32:43 -0400 |
| commit | 4ba66093bdc6316cd2fe48e74a54bfc29599322f (patch) | |
| tree | 88d7591433f9e9dc6a7e7b3aa734064c57d6ea16 /drivers/infiniband/core/uverbs_marshall.c | |
| parent | cf0b9395d084c0710a10e3e4ee8d6b4c87dfcd2d (diff) | |
| download | linux-4ba66093bdc6316cd2fe48e74a54bfc29599322f.tar.gz | |
IB/core: Check for global flag when using ah_attr
Read/write grh fields of the ah_attr only if the ah_flags field has the IB_AH_GRH bit enabled Reviewed-by: Ira Weiny <ira.weiny@intel.com> Reviewed-by: Don Hiatt <don.hiatt@intel.com> Reviewed-by: Sean Hefty <sean.hefty@intel.com> Signed-off-by: Dasaratharaman Chandramouli <dasaratharaman.chandramouli@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/core/uverbs_marshall.c')
| -rw-r--r-- | drivers/infiniband/core/uverbs_marshall.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/drivers/infiniband/core/uverbs_marshall.c b/drivers/infiniband/core/uverbs_marshall.c index ed3e68f915ca..a9739f334562 100644 --- a/drivers/infiniband/core/uverbs_marshall.c +++ b/drivers/infiniband/core/uverbs_marshall.c @@ -36,17 +36,19 @@ void ib_copy_ah_attr_to_user(struct ib_uverbs_ah_attr *dst, struct ib_ah_attr *src) { - memcpy(dst->grh.dgid, src->grh.dgid.raw, sizeof(src->grh.dgid)); - dst->grh.flow_label = src->grh.flow_label; - dst->grh.sgid_index = src->grh.sgid_index; - dst->grh.hop_limit = src->grh.hop_limit; - dst->grh.traffic_class = src->grh.traffic_class; memset(&dst->grh.reserved, 0, sizeof(dst->grh.reserved)); dst->dlid = src->dlid; dst->sl = src->sl; dst->src_path_bits = src->src_path_bits; dst->static_rate = src->static_rate; dst->is_global = src->ah_flags & IB_AH_GRH ? 1 : 0; + if (dst->is_global) { + memcpy(dst->grh.dgid, src->grh.dgid.raw, sizeof(src->grh.dgid)); + dst->grh.flow_label = src->grh.flow_label; + dst->grh.sgid_index = src->grh.sgid_index; + dst->grh.hop_limit = src->grh.hop_limit; + dst->grh.traffic_class = src->grh.traffic_class; + } dst->port_num = src->port_num; dst->reserved = 0; } |