LU-9121 lnet: UDSP storage and marshalled structs

[fs/lustre-release.git] / lnet / include / uapi / linux / lnet / lnet-dlc.h

diff --git a/lnet/include/uapi/linux/lnet/lnet-dlc.h b/lnet/include/uapi/linux/lnet/lnet-dlc.h
index bba8aa3..c37edc8 100644 (file)
--- a/lnet/include/uapi/linux/lnet/lnet-dlc.h
+++ b/lnet/include/uapi/linux/lnet/lnet-dlc.h
@@ -293,4 +293,88 @@ struct lnet_ioctl_lnet_stats {
        struct lnet_counters st_cntrs;
 };
 
+/* An IP, numeric NID or a Net number is composed of 1 or more of these
+ * descriptor structures.
+ */
+struct lnet_range_expr {
+       __u32 re_lo;
+       __u32 re_hi;
+       __u32 re_stride;
+};
+
+/* le_count identifies the number of lnet_range_expr in the bulk
+ * which follows
+ */
+struct lnet_expressions {
+       __u32 le_count;
+};
+
+/* A net descriptor has the net type, IE: O2IBLND, SOCKLND, etc and an
+ * expression describing a net number range.
+ */
+struct lnet_ioctl_udsp_net_descr {
+       __u32 ud_net_type;
+       struct lnet_expressions ud_net_num_expr;
+};
+
+/* The UDSP descriptor header contains the type of matching criteria, SRC,
+ * DST, RTE, etc and how many lnet_expressions compose the LNet portion of
+ * the LNet NID. For example an IP can be
+ * composed of 4 lnet_expressions , a gni can be composed of 1
+ */
+struct lnet_ioctl_udsp_descr_hdr {
+       /* The literals SRC, DST and RTE are encoded
+        * here.
+        */
+       __u32 ud_descr_type;
+       __u32 ud_descr_count;
+};
+
+/* each matching expression in the UDSP is described with this.
+ * The bulk format is as follows:
+ *     1. 1x struct lnet_ioctl_udsp_net_descr
+ *             -> the net part of the NID
+ *     2. >=0 struct lnet_expressions
+ *             -> the address part of the NID
+ */
+struct lnet_ioctl_udsp_descr {
+       struct lnet_ioctl_udsp_descr_hdr iud_src_hdr;
+       struct lnet_ioctl_udsp_net_descr iud_net;
+};
+
+/* The cumulative UDSP descriptor
+ * The bulk format is as follows:
+ *     1. >=1 struct lnet_ioctl_udsp_descr
+ *
+ * The size indicated in iou_hdr is the total size of the UDSP.
+ *
+ */
+struct lnet_ioctl_udsp {
+       struct libcfs_ioctl_hdr iou_hdr;
+       __s32 iou_idx;
+       __u32 iou_action_type;
+       __u32 iou_bulk_size;
+       union {
+               __u32 priority;
+       } iou_action;
+       void __user *iou_bulk;
+};
+
+/* structure used to request udsp instantiation information on the
+ * specified construct.
+ *   cud_nid: the NID of the local or remote NI to pull info on.
+ *   cud_nid_priority: NID prio of the requested NID.
+ *   cud_net_priority: net prio of network of the requested NID.
+ *   cud_pref_nid: array of preferred NIDs if it exists.
+ */
+struct lnet_ioctl_construct_udsp_info {
+       struct libcfs_ioctl_hdr cud_hdr;
+       __u32 cud_peer:1;
+       lnet_nid_t cud_nid;
+       __u32 cud_nid_priority;
+       __u32 cud_net_priority;
+       lnet_nid_t cud_pref_nid[LNET_MAX_SHOW_NUM_NID];
+       lnet_nid_t cud_pref_rtr_nid[LNET_MAX_SHOW_NUM_NID];
+};
+
 #endif /* _LNET_DLC_H_ */