vhost: add inflight structures

This patch adds the inflight queue region structure include
the split and packed.

Signed-off-by: Lin Li <lilin24@baidu.com>
Signed-off-by: Xun Ni <nixun@baidu.com>
Signed-off-by: Yu Zhang <zhangyu31@baidu.com>
Signed-off-by: Jin Yu <jin.yu@intel.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin@redhat.com>

diff --git a/lib/librte_vhost/rte_vhost.h b/lib/librte_vhost/rte_vhost.h
index c2ef65c..7ed971b 100644 (file)
--- a/lib/librte_vhost/rte_vhost.h
+++ b/lib/librte_vhost/rte_vhost.h
@@ -103,6 +103,49 @@ struct rte_vhost_memory {
        struct rte_vhost_mem_region regions[];
 };
 
+struct rte_vhost_inflight_desc_split {
+       uint8_t inflight;
+       uint8_t padding[5];
+       uint16_t next;
+       uint64_t counter;
+};
+
+struct rte_vhost_inflight_info_split {
+       uint64_t features;
+       uint16_t version;
+       uint16_t desc_num;
+       uint16_t last_inflight_io;
+       uint16_t used_idx;
+       struct rte_vhost_inflight_desc_split desc[0];
+};
+
+struct rte_vhost_inflight_desc_packed {
+       uint8_t inflight;
+       uint8_t padding;
+       uint16_t next;
+       uint16_t last;
+       uint16_t num;
+       uint64_t counter;
+       uint16_t id;
+       uint16_t flags;
+       uint32_t len;
+       uint64_t addr;
+};
+
+struct rte_vhost_inflight_info_packed {
+       uint64_t features;
+       uint16_t version;
+       uint16_t desc_num;
+       uint16_t free_head;
+       uint16_t old_free_head;
+       uint16_t used_idx;
+       uint16_t old_used_idx;
+       uint8_t used_wrap_counter;
+       uint8_t old_used_wrap_counter;
+       uint8_t padding[7];
+       struct rte_vhost_inflight_desc_packed desc[0];
+};
+
 struct rte_vhost_vring {
        union {
                struct vring_desc *desc;