DPDK patches and discussions
 help / color / mirror / Atom feed
From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: dev@dpdk.org, tiwei.bie@intel.com, zhihong.wang@intel.com,
	jfreimann@redhat.com, nicknickolaev@gmail.com,
	i.maximets@samsung.com, bruce.richardson@intel.com,
	alejandro.lucero@netronome.com
Cc: dgilbert@redhat.com, stable@dpdk.org,
	Maxime Coquelin <maxime.coquelin@redhat.com>
Subject: [dpdk-dev] [PATCH v4 09/19] vhost: enable fds passing when sending vhost-user messages
Date: Mon,  8 Oct 2018 17:25:47 +0200	[thread overview]
Message-ID: <20181008152557.14275-10-maxime.coquelin@redhat.com> (raw)
In-Reply-To: <20181008152557.14275-1-maxime.coquelin@redhat.com>

Passing userfault fds to Qemu will be required for postcopy
live-migration feature.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
 lib/librte_vhost/vhost_user.c | 27 +++++++++++++++------------
 1 file changed, 15 insertions(+), 12 deletions(-)

diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index 48a070277..20f38267d 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -171,6 +171,7 @@ vhost_user_get_features(struct virtio_net **pdev, struct VhostUserMsg *msg,
 
 	msg->payload.u64 = features;
 	msg->size = sizeof(msg->payload.u64);
+	msg->fd_num = 0;
 
 	return VH_RESULT_REPLY;
 }
@@ -189,6 +190,7 @@ vhost_user_get_queue_num(struct virtio_net **pdev, struct VhostUserMsg *msg,
 
 	msg->payload.u64 = (uint64_t)queue_num;
 	msg->size = sizeof(msg->payload.u64);
+	msg->fd_num = 0;
 
 	return VH_RESULT_REPLY;
 }
@@ -1173,6 +1175,7 @@ vhost_user_get_vring_base(struct virtio_net **pdev,
 	vq->batch_copy_elems = NULL;
 
 	msg->size = sizeof(msg->payload.state);
+	msg->fd_num = 0;
 
 	return VH_RESULT_REPLY;
 }
@@ -1232,6 +1235,7 @@ vhost_user_get_protocol_features(struct virtio_net **pdev,
 
 	msg->payload.u64 = protocol_features;
 	msg->size = sizeof(msg->payload.u64);
+	msg->fd_num = 0;
 
 	return VH_RESULT_REPLY;
 }
@@ -1318,6 +1322,7 @@ vhost_user_set_log_base(struct virtio_net **pdev, struct VhostUserMsg *msg,
 	 * any payload in the reply.
 	 */
 	msg->size = 0;
+	msg->fd_num = 0;
 
 	return VH_RESULT_REPLY;
 }
@@ -1564,13 +1569,13 @@ read_vhost_message(int sockfd, struct VhostUserMsg *msg)
 }
 
 static int
-send_vhost_message(int sockfd, struct VhostUserMsg *msg, int *fds, int fd_num)
+send_vhost_message(int sockfd, struct VhostUserMsg *msg)
 {
 	if (!msg)
 		return 0;
 
 	return send_fd_message(sockfd, (char *)msg,
-		VHOST_USER_HDR_SIZE + msg->size, fds, fd_num);
+		VHOST_USER_HDR_SIZE + msg->size, msg->fds, msg->fd_num);
 }
 
 static int
@@ -1584,19 +1589,18 @@ send_vhost_reply(int sockfd, struct VhostUserMsg *msg)
 	msg->flags |= VHOST_USER_VERSION;
 	msg->flags |= VHOST_USER_REPLY_MASK;
 
-	return send_vhost_message(sockfd, msg, NULL, 0);
+	return send_vhost_message(sockfd, msg);
 }
 
 static int
-send_vhost_slave_message(struct virtio_net *dev, struct VhostUserMsg *msg,
-			 int *fds, int fd_num)
+send_vhost_slave_message(struct virtio_net *dev, struct VhostUserMsg *msg)
 {
 	int ret;
 
 	if (msg->flags & VHOST_USER_NEED_REPLY)
 		rte_spinlock_lock(&dev->slave_req_lock);
 
-	ret = send_vhost_message(dev->slave_req_fd, msg, fds, fd_num);
+	ret = send_vhost_message(dev->slave_req_fd, msg);
 	if (ret < 0 && (msg->flags & VHOST_USER_NEED_REPLY))
 		rte_spinlock_unlock(&dev->slave_req_lock);
 
@@ -1834,6 +1838,7 @@ vhost_user_msg_handler(int vid, int fd)
 	if (msg.flags & VHOST_USER_NEED_REPLY) {
 		msg.payload.u64 = ret == VH_RESULT_ERR;
 		msg.size = sizeof(msg.payload.u64);
+		msg.fd_num = 0;
 		send_vhost_reply(fd, &msg);
 	} else if (ret == VH_RESULT_ERR) {
 		RTE_LOG(ERR, VHOST_CONFIG,
@@ -1917,7 +1922,7 @@ vhost_user_iotlb_miss(struct virtio_net *dev, uint64_t iova, uint8_t perm)
 		},
 	};
 
-	ret = send_vhost_message(dev->slave_req_fd, &msg, NULL, 0);
+	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",
@@ -1933,8 +1938,6 @@ static int vhost_user_slave_set_vring_host_notifier(struct virtio_net *dev,
 						    uint64_t offset,
 						    uint64_t size)
 {
-	int *fdp = NULL;
-	size_t fd_num = 0;
 	int ret;
 	struct VhostUserMsg msg = {
 		.request.slave = VHOST_USER_SLAVE_VRING_HOST_NOTIFIER_MSG,
@@ -1950,11 +1953,11 @@ static int vhost_user_slave_set_vring_host_notifier(struct virtio_net *dev,
 	if (fd < 0)
 		msg.payload.area.u64 |= VHOST_USER_VRING_NOFD_MASK;
 	else {
-		fdp = &fd;
-		fd_num = 1;
+		msg.fds[0] = fd;
+		msg.fd_num = 1;
 	}
 
-	ret = send_vhost_slave_message(dev, &msg, fdp, fd_num);
+	ret = send_vhost_slave_message(dev, &msg);
 	if (ret < 0) {
 		RTE_LOG(ERR, VHOST_CONFIG,
 			"Failed to set host notifier (%d)\n", ret);
-- 
2.17.1

  parent reply	other threads:[~2018-10-08 15:26 UTC|newest]

Thread overview: 36+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-10-08 15:25 [dpdk-dev] [PATCH v4 00/19] vhost: add postcopy live-migration support Maxime Coquelin
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 01/19] vhost: fix messages error checks Maxime Coquelin
2018-10-09  8:03   ` Tiwei Bie
2018-10-09 12:20     ` Maxime Coquelin
2018-10-09 12:54       ` Tiwei Bie
2018-10-09 17:53         ` Maxime Coquelin
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 02/19] vhost: fix return code of messages requiring replies Maxime Coquelin
2018-10-09  8:05   ` Tiwei Bie
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 03/19] vhost: clarify reply-ack in case a reply was already sent Maxime Coquelin
2018-10-09  8:12   ` Tiwei Bie
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 04/19] vhost: fix payload size of reply Maxime Coquelin
2018-10-09 10:21   ` Tiwei Bie
2018-10-09 10:30     ` Maxime Coquelin
2018-10-09 10:34       ` Maxime Coquelin
2018-10-09 11:02         ` Tiwei Bie
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 05/19] vhost: fix error handling when mem table gets updated Maxime Coquelin
2018-10-09 11:35   ` Tiwei Bie
2018-10-09 11:47     ` Maxime Coquelin
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 06/19] vhost: define postcopy protocol flag Maxime Coquelin
2018-10-09 11:41   ` Tiwei Bie
2018-10-09 11:47     ` Maxime Coquelin
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 07/19] vhost: add number of fds to vhost-user messages and use it Maxime Coquelin
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 08/19] vhost: pass socket fd to message handling callbacks Maxime Coquelin
2018-10-08 15:25 ` Maxime Coquelin [this message]
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 10/19] vhost: add config flag for postcopy feature Maxime Coquelin
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 11/19] vhost: introduce postcopy's advise message Maxime Coquelin
2018-10-08 16:22   ` Ilya Maximets
2018-10-09  7:59     ` Maxime Coquelin
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 12/19] vhost: add support for postcopy's listen message Maxime Coquelin
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 13/19] vhost: register new regions with userfaultfd Maxime Coquelin
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 14/19] vhost: avoid useless VhostUserMemory copy Maxime Coquelin
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 15/19] vhost: send userfault range addresses back to qemu Maxime Coquelin
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 16/19] vhost: add support to postcopy's end request Maxime Coquelin
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 17/19] vhost: enable postcopy protocol feature Maxime Coquelin
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 18/19] vhost: add flag to enable postcopy live-migration Maxime Coquelin
2018-10-08 15:25 ` [dpdk-dev] [PATCH v4 19/19] net/vhost: add parameter to enable postcopy support Maxime Coquelin

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20181008152557.14275-10-maxime.coquelin@redhat.com \
    --to=maxime.coquelin@redhat.com \
    --cc=alejandro.lucero@netronome.com \
    --cc=bruce.richardson@intel.com \
    --cc=dev@dpdk.org \
    --cc=dgilbert@redhat.com \
    --cc=i.maximets@samsung.com \
    --cc=jfreimann@redhat.com \
    --cc=nicknickolaev@gmail.com \
    --cc=stable@dpdk.org \
    --cc=tiwei.bie@intel.com \
    --cc=zhihong.wang@intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).