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From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: dev@dpdk.org, yliu@fridaylinux.org, jfreiman@redhat.com,
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Maxime Coquelin <maxime.coquelin@redhat.com>
Date: Thu, 31 Aug 2017 11:50:11 +0200
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Subject: [dpdk-dev] [PATCH 09/21] vhost-user: add support to IOTLB miss
slave requests
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Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
lib/librte_vhost/vhost_user.c | 25 +++++++++++++++++++++++++
lib/librte_vhost/vhost_user.h | 3 +++
2 files changed, 28 insertions(+)
diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index 7b3c2f32a..8b4a2b358 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -1131,3 +1131,28 @@ vhost_user_msg_handler(int vid, int fd)
return ret;
}
+
+int vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm)
+{
+ int ret;
+ struct VhostUserMsg msg = {
+ .request = VHOST_USER_SLAVE_IOTLB_MSG,
+ .flags = VHOST_USER_VERSION,
+ .size = sizeof(msg.payload.iotlb),
+ .payload.iotlb = {
+ .iova = iova,
+ .perm = perm,
+ .type = VHOST_IOTLB_MISS,
+ },
+ };
+
+ ret = send_vhost_message(dev->slave_req_fd, &msg);
+ if (ret < 0) {
+ RTE_LOG(ERR, VHOST_CONFIG,
+ "Failed to send IOTLB miss message (%d)\n",
+ ret);
+ return ret;
+ }
+
+ return 0;
+}
diff --git a/lib/librte_vhost/vhost_user.h b/lib/librte_vhost/vhost_user.h
index 98f6e6f37..0b2aff14e 100644
--- a/lib/librte_vhost/vhost_user.h
+++ b/lib/librte_vhost/vhost_user.h
@@ -85,6 +85,7 @@ typedef enum VhostUserRequest {
typedef enum VhostUserSlaveRequest {
VHOST_USER_SLAVE_NONE = 0,
+ VHOST_USER_SLAVE_IOTLB_MSG = 1,
VHOST_USER_SLAVE_MAX
} VhostUserSlaveRequest;
@@ -122,6 +123,7 @@ typedef struct VhostUserMsg {
struct vhost_vring_addr addr;
VhostUserMemory memory;
VhostUserLog log;
+ struct vhost_iotlb_msg iotlb;
} payload;
int fds[VHOST_MEMORY_MAX_NREGIONS];
} __attribute((packed)) VhostUserMsg;
@@ -134,6 +136,7 @@ typedef struct VhostUserMsg {
/* vhost_user.c */
int vhost_user_msg_handler(int vid, int fd);
+int vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm);
/* socket.c */
int read_fd_message(int sockfd, char *buf, int buflen, int *fds, int fd_num);
--
2.13.3