IB/rdmavt: Add multicast functions
This patch adds in the multicast add and remove functions as well as the
ancillary infrastructure needed.
Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
diff --git a/include/rdma/rdmavt_qp.h b/include/rdma/rdmavt_qp.h
index e66bcc9..a97b95b 100644
--- a/include/rdma/rdmavt_qp.h
+++ b/include/rdma/rdmavt_qp.h
@@ -50,6 +50,7 @@
#include <rdma/rdma_vt.h>
#include <rdma/ib_pack.h>
+#include <rdma/ib_verbs.h>
/*
* Atomic bit definitions for r_aflags.
*/
@@ -386,8 +387,27 @@
};
/*
+ * There is one struct rvt_mcast for each multicast GID.
+ * All attached QPs are then stored as a list of
+ * struct rvt_mcast_qp.
+ */
+struct rvt_mcast_qp {
+ struct list_head list;
+ struct rvt_qp *qp;
+};
+
+struct rvt_mcast {
+ struct rb_node rb_node;
+ union ib_gid mgid;
+ struct list_head qp_list;
+ wait_queue_head_t wait;
+ atomic_t refcount;
+ int n_attached;
+};
+
+/*
* Since struct rvt_swqe is not a fixed size, we can't simply index into
- * struct hfi1_qp.s_wq. This function does the array index computation.
+ * struct rvt_qp.s_wq. This function does the array index computation.
*/
static inline struct rvt_swqe *rvt_get_swqe_ptr(struct rvt_qp *qp,
unsigned n)