[PATCH] IB: Add ib_create_ah_from_wc to IB verbs
Added new call: ib_create_ah_from_wc. Call will allocate an address handle
given work completion information, including any received GRH.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Hal Rosenstock <halr@voltaire.com>
Cc: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/drivers/infiniband/include/ib_verbs.h b/drivers/infiniband/include/ib_verbs.h
index b6107c4..5d24eda 100644
--- a/drivers/infiniband/include/ib_verbs.h
+++ b/drivers/infiniband/include/ib_verbs.h
@@ -289,6 +289,15 @@
u8 traffic_class;
};
+struct ib_grh {
+ u32 version_tclass_flow;
+ u16 paylen;
+ u8 next_hdr;
+ u8 hop_limit;
+ union ib_gid sgid;
+ union ib_gid dgid;
+};
+
enum {
IB_MULTICAST_QPN = 0xffffff
};
@@ -991,6 +1000,21 @@
struct ib_ah *ib_create_ah(struct ib_pd *pd, struct ib_ah_attr *ah_attr);
/**
+ * ib_create_ah_from_wc - Creates an address handle associated with the
+ * sender of the specified work completion.
+ * @pd: The protection domain associated with the address handle.
+ * @wc: Work completion information associated with a received message.
+ * @grh: References the received global route header. This parameter is
+ * ignored unless the work completion indicates that the GRH is valid.
+ * @port_num: The outbound port number to associate with the address.
+ *
+ * The address handle is used to reference a local or global destination
+ * in all UD QP post sends.
+ */
+struct ib_ah *ib_create_ah_from_wc(struct ib_pd *pd, struct ib_wc *wc,
+ struct ib_grh *grh, u8 port_num);
+
+/**
* ib_modify_ah - Modifies the address vector associated with an address
* handle.
* @ah: The address handle to modify.