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IB/mad: Change validate_mad signature arguments 

validate_mad only needs read access to the MAD header, not write access
to the entire mad struct, so replace struct ib_mad with const struct
ib_mad_hdr

Reviewed-By: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Reviewed-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Ira Weiny 2015-05-08 14:27:21 -04:00 committed by Doug Ledford
parent b78d28a2af
commit 77f60833b8
1 changed files with 6 additions and 6 deletions
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12
drivers/infiniband/core/mad.c
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@ -1708,20 +1708,20 @@ out:
return mad_agent;
}
static int validate_mad(struct ib_mad *mad, u32 qp_num)
static int validate_mad(const struct ib_mad_hdr *mad_hdr, u32 qp_num)
{
int valid = 0;
/* Make sure MAD base version is understood */
if (mad->mad_hdr.base_version != IB_MGMT_BASE_VERSION) {
if (mad_hdr->base_version != IB_MGMT_BASE_VERSION) {
pr_err("MAD received with unsupported base version %d\n",
mad->mad_hdr.base_version);
mad_hdr->base_version);
goto out;
}
/* Filter SMI packets sent to other than QP0 */
if ((mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED) ||
(mad->mad_hdr.mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)) {
if ((mad_hdr->mgmt_class == IB_MGMT_CLASS_SUBN_LID_ROUTED) ||
(mad_hdr->mgmt_class == IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)) {
if (qp_num == 0)
valid = 1;
} else {
@ -1979,7 +1979,7 @@ static void ib_mad_recv_done_handler(struct ib_mad_port_private *port_priv,
snoop_recv(qp_info, &recv->header.recv_wc, IB_MAD_SNOOP_RECVS);
/* Validate MAD */
if (!validate_mad(&recv->mad.mad, qp_info->qp->qp_num))
if (!validate_mad(&recv->mad.mad.mad_hdr, qp_info->qp->qp_num))
goto out;
response = kmem_cache_alloc(ib_mad_cache, GFP_KERNEL);