X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=drivers%2Finfiniband%2Fhw%2Fqib%2Fqib_common.h;h=145da4040883cb440987ce412277d6ec94bb4a67;hb=0b019a41553a919965bb02d07d54e3e6c57a796d;hp=b3955ed8f79454269ba836fb5a99f8bb8041e896;hpb=2a88e7e559f2358f4e1422d0b0c0278a74136581;p=firefly-linux-kernel-4.4.55.git

diff --git a/drivers/infiniband/hw/qib/qib_common.h b/drivers/infiniband/hw/qib/qib_common.h
index b3955ed8f794..145da4040883 100644
--- a/drivers/infiniband/hw/qib/qib_common.h
+++ b/drivers/infiniband/hw/qib/qib_common.h
@@ -279,7 +279,7 @@ struct qib_base_info {
  * may not be implemented; the user code must deal with this if it
  * cares, or it must abort after initialization reports the difference.
  */
-#define QIB_USER_SWMINOR 10
+#define QIB_USER_SWMINOR 11
 
 #define QIB_USER_SWVERSION ((QIB_USER_SWMAJOR << 16) | QIB_USER_SWMINOR)
 
@@ -301,6 +301,18 @@ struct qib_base_info {
 */
 #define QIB_KERN_SWVERSION ((QIB_KERN_TYPE << 31) | QIB_USER_SWVERSION)
 
+/*
+ * If the unit is specified via open, HCA choice is fixed.  If port is
+ * specified, it's also fixed.  Otherwise we try to spread contexts
+ * across ports and HCAs, using different algorithims.  WITHIN is
+ * the old default, prior to this mechanism.
+ */
+#define QIB_PORT_ALG_ACROSS 0 /* round robin contexts across HCAs, then
+			       * ports; this is the default */
+#define QIB_PORT_ALG_WITHIN 1 /* use all contexts on an HCA (round robin
+			       * active ports within), then next HCA */
+#define QIB_PORT_ALG_COUNT 2 /* number of algorithm choices */
+
 /*
  * This structure is passed to qib_userinit() to tell the driver where
  * user code buffers are, sizes, etc.   The offsets and sizes of the
@@ -319,7 +331,7 @@ struct qib_user_info {
 	/* size of struct base_info to write to */
 	__u32 spu_base_info_size;
 
-	__u32 _spu_unused3;
+	__u32 spu_port_alg; /* which QIB_PORT_ALG_*; unused user minor < 11 */
 
 	/*
 	 * If two or more processes wish to share a context, each process