[PATCH v3 3/4] Add RAW_PACKET to verbs attach/detach multicast

[Aleksey Senin <alekseys-smomgflXvOZWk0Htik3J/w@public.gmane.org>]

Sanity check - validate that the subnet_prefix bits set to zero'es.

Signed-off-by: Aleksey Senin <alekseys-smomgflXvOZWk0Htik3J/w@public.gmane.org>
---
 drivers/infiniband/core/verbs.c |   10 ++++++++--
 1 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/infiniband/core/verbs.c b/drivers/infiniband/core/verbs.c
index 611c13c..9e4998c 100644
--- a/drivers/infiniband/core/verbs.c
+++ b/drivers/infiniband/core/verbs.c
@@ -904,7 +904,10 @@ int ib_attach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
 {
 	if (!qp->device->attach_mcast)
 		return -ENOSYS;
-	if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
+	if (qp->qp_type == IB_QPT_RAW_PACKET) {
+		if (gid->global.subnet_prefix & cpu_to_be64(~1ULL))
+			return -EINVAL;
+	} else if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
 		return -EINVAL;
 
 	return qp->device->attach_mcast(qp, gid, lid);
@@ -915,7 +918,10 @@ int ib_detach_mcast(struct ib_qp *qp, union ib_gid *gid, u16 lid)
 {
 	if (!qp->device->detach_mcast)
 		return -ENOSYS;
-	if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
+	if (qp->qp_type == IB_QPT_RAW_PACKET) {
+		if (gid->global.subnet_prefix & cpu_to_be64(~1ULL))
+			return -EINVAL;
+	} else if (gid->raw[0] != 0xff || qp->qp_type != IB_QPT_UD)
 		return -EINVAL;
 
 	return qp->device->detach_mcast(qp, gid, lid);
-- 
1.6.4.2

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