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authorIra Weiny <ira.weiny@intel.com>2015-06-06 18:38:27 (GMT)
committerDoug Ledford <dledford@redhat.com>2015-06-12 18:49:16 (GMT)
commit29869eafa6d757edbec17a9a7add1e34b968ae2c (patch)
treef9c6a9b60c697d12748d7cdd69bed5d2e8305575
parent86f0e67a21508b3e6020d53ef92a73081ed7eae1 (diff)
downloadlinux-29869eafa6d757edbec17a9a7add1e34b968ae2c.tar.xz
IB/mad: Create a generic helper for DR forwarding checks
IB and OPA SMPs share the same processing algorithm but have different header formats and permissive LID detection. Add a helper function which is generic to processing the DR forwarding checks which can be used by both IB and OPA SMP code. Use this function in the current IB function smi_check_forward_dr_smp. Signed-off-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Doug Ledford <dledford@redhat.com>
-rw-r--r--drivers/infiniband/core/smi.c25
1 files changed, 16 insertions, 9 deletions
diff --git a/drivers/infiniband/core/smi.c b/drivers/infiniband/core/smi.c
index eb39146..c523b2d 100644
--- a/drivers/infiniband/core/smi.c
+++ b/drivers/infiniband/core/smi.c
@@ -234,21 +234,19 @@ enum smi_action smi_handle_dr_smp_recv(struct ib_smp *smp, u8 node_type,
smp->dr_slid == IB_LID_PERMISSIVE);
}
-enum smi_forward_action smi_check_forward_dr_smp(struct ib_smp *smp)
+static enum smi_forward_action __smi_check_forward_dr_smp(u8 hop_ptr, u8 hop_cnt,
+ u8 direction,
+ bool dr_dlid_is_permissive,
+ bool dr_slid_is_permissive)
{
- u8 hop_ptr, hop_cnt;
-
- hop_ptr = smp->hop_ptr;
- hop_cnt = smp->hop_cnt;
-
- if (!ib_get_smp_direction(smp)) {
+ if (!direction) {
/* C14-9:2 -- intermediate hop */
if (hop_ptr && hop_ptr < hop_cnt)
return IB_SMI_FORWARD;
/* C14-9:3 -- at the end of the DR segment of path */
if (hop_ptr == hop_cnt)
- return (smp->dr_dlid == IB_LID_PERMISSIVE ?
+ return (dr_dlid_is_permissive ?
IB_SMI_SEND : IB_SMI_LOCAL);
/* C14-9:4 -- hop_ptr = hop_cnt + 1 -> give to SMA/SM */
@@ -261,10 +259,19 @@ enum smi_forward_action smi_check_forward_dr_smp(struct ib_smp *smp)
/* C14-13:3 -- at the end of the DR segment of path */
if (hop_ptr == 1)
- return (smp->dr_slid != IB_LID_PERMISSIVE ?
+ return (!dr_slid_is_permissive ?
IB_SMI_SEND : IB_SMI_LOCAL);
}
return IB_SMI_LOCAL;
+
+}
+
+enum smi_forward_action smi_check_forward_dr_smp(struct ib_smp *smp)
+{
+ return __smi_check_forward_dr_smp(smp->hop_ptr, smp->hop_cnt,
+ ib_get_smp_direction(smp),
+ smp->dr_dlid == IB_LID_PERMISSIVE,
+ smp->dr_slid == IB_LID_PERMISSIVE);
}
/*