X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;ds=sidebyside;f=lib%2Flibrte_vhost%2Frte_vhost.h;h=b02673d4a66d97d01853233e14546ba7732c64ec;hb=b63264c8342e6a1b6971c79550d2af2024b6a4de;hp=d33206997453b005fba6eb0e22745d4daf4bea25;hpb=ca33590b6af032bff57d9cc70455660466a654b2;p=deb_dpdk.git

diff --git a/lib/librte_vhost/rte_vhost.h b/lib/librte_vhost/rte_vhost.h
index d3320699..b02673d4 100644
--- a/lib/librte_vhost/rte_vhost.h
+++ b/lib/librte_vhost/rte_vhost.h
@@ -29,6 +29,48 @@ extern "C" {
 #define RTE_VHOST_USER_DEQUEUE_ZERO_COPY	(1ULL << 2)
 #define RTE_VHOST_USER_IOMMU_SUPPORT	(1ULL << 3)
 
+/** Protocol features. */
+#ifndef VHOST_USER_PROTOCOL_F_MQ
+#define VHOST_USER_PROTOCOL_F_MQ	0
+#endif
+
+#ifndef VHOST_USER_PROTOCOL_F_LOG_SHMFD
+#define VHOST_USER_PROTOCOL_F_LOG_SHMFD	1
+#endif
+
+#ifndef VHOST_USER_PROTOCOL_F_RARP
+#define VHOST_USER_PROTOCOL_F_RARP	2
+#endif
+
+#ifndef VHOST_USER_PROTOCOL_F_REPLY_ACK
+#define VHOST_USER_PROTOCOL_F_REPLY_ACK	3
+#endif
+
+#ifndef VHOST_USER_PROTOCOL_F_NET_MTU
+#define VHOST_USER_PROTOCOL_F_NET_MTU	4
+#endif
+
+#ifndef VHOST_USER_PROTOCOL_F_SLAVE_REQ
+#define VHOST_USER_PROTOCOL_F_SLAVE_REQ	5
+#endif
+
+#ifndef VHOST_USER_PROTOCOL_F_CRYPTO_SESSION
+#define VHOST_USER_PROTOCOL_F_CRYPTO_SESSION 7
+#endif
+
+#ifndef VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD
+#define VHOST_USER_PROTOCOL_F_SLAVE_SEND_FD 10
+#endif
+
+#ifndef VHOST_USER_PROTOCOL_F_HOST_NOTIFIER
+#define VHOST_USER_PROTOCOL_F_HOST_NOTIFIER 11
+#endif
+
+/** Indicate whether protocol features negotiation is supported. */
+#ifndef VHOST_USER_F_PROTOCOL_FEATURES
+#define VHOST_USER_F_PROTOCOL_FEATURES	30
+#endif
+
 /**
  * Information relating to memory regions including offsets to
  * addresses in QEMUs memory file.
@@ -90,6 +132,11 @@ struct vhost_device_ops {
 /**
  * Convert guest physical address to host virtual address
  *
+ * This function is deprecated because unsafe.
+ * New rte_vhost_va_from_guest_pa() should be used instead to ensure
+ * guest physical ranges are fully and contiguously mapped into
+ * process virtual address space.
+ *
  * @param mem
  *  the guest memory regions
  * @param gpa
@@ -97,6 +144,7 @@ struct vhost_device_ops {
  * @return
  *  the host virtual address on success, 0 on failure
  */
+__rte_deprecated
 static __rte_always_inline uint64_t
 rte_vhost_gpa_to_vva(struct rte_vhost_memory *mem, uint64_t gpa)
 {
@@ -115,6 +163,46 @@ rte_vhost_gpa_to_vva(struct rte_vhost_memory *mem, uint64_t gpa)
 	return 0;
 }
 
+/**
+ * Convert guest physical address to host virtual address safely
+ *
+ * This variant of rte_vhost_gpa_to_vva() takes care all the
+ * requested length is mapped and contiguous in process address
+ * space.
+ *
+ * @param mem
+ *  the guest memory regions
+ * @param gpa
+ *  the guest physical address for querying
+ * @param len
+ *  the size of the requested area to map, updated with actual size mapped
+ * @return
+ *  the host virtual address on success, 0 on failure
+ */
+static __rte_always_inline uint64_t
+rte_vhost_va_from_guest_pa(struct rte_vhost_memory *mem,
+						   uint64_t gpa, uint64_t *len)
+{
+	struct rte_vhost_mem_region *r;
+	uint32_t i;
+
+	for (i = 0; i < mem->nregions; i++) {
+		r = &mem->regions[i];
+		if (gpa >= r->guest_phys_addr &&
+		    gpa <  r->guest_phys_addr + r->size) {
+
+			if (unlikely(*len > r->guest_phys_addr + r->size - gpa))
+				*len = r->guest_phys_addr + r->size - gpa;
+
+			return gpa - r->guest_phys_addr +
+			       r->host_user_addr;
+		}
+	}
+	*len = 0;
+
+	return 0;
+}
+
 #define RTE_VHOST_NEED_LOG(features)	((features) & (1ULL << VHOST_F_LOG_ALL))
 
 /**
@@ -169,6 +257,41 @@ int rte_vhost_driver_register(const char *path, uint64_t flags);
 /* Unregister vhost driver. This is only meaningful to vhost user. */
 int rte_vhost_driver_unregister(const char *path);
 
+/**
+ * Set the vdpa device id, enforce single connection per socket
+ *
+ * @param path
+ *  The vhost-user socket file path
+ * @param did
+ *  Device id
+ * @return
+ *  0 on success, -1 on failure
+ */
+int __rte_experimental
+rte_vhost_driver_attach_vdpa_device(const char *path, int did);
+
+/**
+ * Unset the vdpa device id
+ *
+ * @param path
+ *  The vhost-user socket file path
+ * @return
+ *  0 on success, -1 on failure
+ */
+int __rte_experimental
+rte_vhost_driver_detach_vdpa_device(const char *path);
+
+/**
+ * Get the device id
+ *
+ * @param path
+ *  The vhost-user socket file path
+ * @return
+ *  Device id, -1 on failure
+ */
+int __rte_experimental
+rte_vhost_driver_get_vdpa_device_id(const char *path);
+
 /**
  * Set the feature bits the vhost-user driver supports.
  *
@@ -224,6 +347,33 @@ int rte_vhost_driver_disable_features(const char *path, uint64_t features);
  */
 int rte_vhost_driver_get_features(const char *path, uint64_t *features);
 
+/**
+ * Get the protocol feature bits before feature negotiation.
+ *
+ * @param path
+ *  The vhost-user socket file path
+ * @param protocol_features
+ *  A pointer to store the queried protocol feature bits
+ * @return
+ *  0 on success, -1 on failure
+ */
+int __rte_experimental
+rte_vhost_driver_get_protocol_features(const char *path,
+		uint64_t *protocol_features);
+
+/**
+ * Get the queue number bits before feature negotiation.
+ *
+ * @param path
+ *  The vhost-user socket file path
+ * @param queue_num
+ *  A pointer to store the queried queue number bits
+ * @return
+ *  0 on success, -1 on failure
+ */
+int __rte_experimental
+rte_vhost_driver_get_queue_num(const char *path, uint32_t *queue_num);
+
 /**
  * Get the feature bits after negotiation
  *
@@ -434,6 +584,68 @@ int rte_vhost_vring_call(int vid, uint16_t vring_idx);
  */
 uint32_t rte_vhost_rx_queue_count(int vid, uint16_t qid);
 
+/**
+ * Get log base and log size of the vhost device
+ *
+ * @param vid
+ *  vhost device ID
+ * @param log_base
+ *  vhost log base
+ * @param log_size
+ *  vhost log size
+ * @return
+ *  0 on success, -1 on failure
+ */
+int __rte_experimental
+rte_vhost_get_log_base(int vid, uint64_t *log_base, uint64_t *log_size);
+
+/**
+ * Get last_avail/used_idx of the vhost virtqueue
+ *
+ * @param vid
+ *  vhost device ID
+ * @param queue_id
+ *  vhost queue index
+ * @param last_avail_idx
+ *  vhost last_avail_idx to get
+ * @param last_used_idx
+ *  vhost last_used_idx to get
+ * @return
+ *  0 on success, -1 on failure
+ */
+int __rte_experimental
+rte_vhost_get_vring_base(int vid, uint16_t queue_id,
+		uint16_t *last_avail_idx, uint16_t *last_used_idx);
+
+/**
+ * Set last_avail/used_idx of the vhost virtqueue
+ *
+ * @param vid
+ *  vhost device ID
+ * @param queue_id
+ *  vhost queue index
+ * @param last_avail_idx
+ *  last_avail_idx to set
+ * @param last_used_idx
+ *  last_used_idx to set
+ * @return
+ *  0 on success, -1 on failure
+ */
+int __rte_experimental
+rte_vhost_set_vring_base(int vid, uint16_t queue_id,
+		uint16_t last_avail_idx, uint16_t last_used_idx);
+
+/**
+ * Get vdpa device id for vhost device.
+ *
+ * @param vid
+ *  vhost device id
+ * @return
+ *  device id
+ */
+int __rte_experimental
+rte_vhost_get_vdpa_device_id(int vid);
+
 #ifdef __cplusplus
 }
 #endif