DPDK patches and discussions
 help / color / mirror / Atom feed
From: Nikolay Nikolaev <nicknickolaev@gmail.com>
To: maxime.coquelin@redhat.com, tiwei.bie@intel.com, zhihong.wang@intel.com
Cc: dev@dpdk.org
Subject: [dpdk-dev] [PATCH v3 2/5] vhost: make message handling functions prepare the reply
Date: Sat, 15 Sep 2018 08:20:33 +0300	[thread overview]
Message-ID: <153698883388.23049.2819933386635765768.stgit@T460> (raw)
In-Reply-To: <153698873346.23049.10966616323159180622.stgit@T460>

As VhostUserMsg structure is reused to generate the reply, move the
relevant fields update into the respective message handling functions.

Signed-off-by: Nikolay Nikolaev <nicknickolaev@gmail.com>
---
 lib/librte_vhost/vhost_user.c |   24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c
index b05b57670..3a00d53cf 100644
--- a/lib/librte_vhost/vhost_user.c
+++ b/lib/librte_vhost/vhost_user.c
@@ -146,11 +146,15 @@ vhost_user_reset_owner(struct virtio_net *dev)
  * The features that we support are requested.
  */
 static uint64_t
-vhost_user_get_features(struct virtio_net *dev)
+vhost_user_get_features(struct virtio_net *dev, VhostUserMsg *msg)
 {
 	uint64_t features = 0;
 
 	rte_vhost_driver_get_features(dev->ifname, &features);
+
+	msg->payload.u64 = features;
+	msg->size = sizeof(msg->payload.u64);
+
 	return features;
 }
 
@@ -158,11 +162,15 @@ vhost_user_get_features(struct virtio_net *dev)
  * The queue number that we support are requested.
  */
 static uint32_t
-vhost_user_get_queue_num(struct virtio_net *dev)
+vhost_user_get_queue_num(struct virtio_net *dev, VhostUserMsg *msg)
 {
 	uint32_t queue_num = 0;
 
 	rte_vhost_driver_get_queue_num(dev->ifname, &queue_num);
+
+	msg->payload.u64 = (uint64_t)queue_num;
+	msg->size = sizeof(msg->payload.u64);
+
 	return queue_num;
 }
 
@@ -1117,6 +1125,8 @@ vhost_user_get_vring_base(struct virtio_net *dev,
 	rte_free(vq->batch_copy_elems);
 	vq->batch_copy_elems = NULL;
 
+	msg->size = sizeof(msg->payload.state);
+
 	return 0;
 }
 
@@ -1244,6 +1254,8 @@ vhost_user_set_log_base(struct virtio_net *dev, VhostUserMsg *msg)
 	dev->log_base = dev->log_addr + off;
 	dev->log_size = size;
 
+	msg->size = sizeof(msg->payload.u64);
+
 	return 0;
 }
 
@@ -1657,8 +1669,7 @@ vhost_user_msg_handler(int vid, int fd)
 
 	switch (msg.request.master) {
 	case VHOST_USER_GET_FEATURES:
-		msg.payload.u64 = vhost_user_get_features(dev);
-		msg.size = sizeof(msg.payload.u64);
+		vhost_user_get_features(dev, &msg);
 		send_vhost_reply(fd, &msg);
 		break;
 	case VHOST_USER_SET_FEATURES:
@@ -1689,7 +1700,6 @@ vhost_user_msg_handler(int vid, int fd)
 		if (ret)
 			goto skip_to_reply;
 		/* it needs a reply */
-		msg.size = sizeof(msg.payload.u64);
 		send_vhost_reply(fd, &msg);
 		break;
 	case VHOST_USER_SET_LOG_FD:
@@ -1711,7 +1721,6 @@ vhost_user_msg_handler(int vid, int fd)
 		ret = vhost_user_get_vring_base(dev, &msg);
 		if (ret)
 			goto skip_to_reply;
-		msg.size = sizeof(msg.payload.state);
 		send_vhost_reply(fd, &msg);
 		break;
 
@@ -1729,8 +1738,7 @@ vhost_user_msg_handler(int vid, int fd)
 		break;
 
 	case VHOST_USER_GET_QUEUE_NUM:
-		msg.payload.u64 = (uint64_t)vhost_user_get_queue_num(dev);
-		msg.size = sizeof(msg.payload.u64);
+		vhost_user_get_queue_num(dev, &msg);
 		send_vhost_reply(fd, &msg);
 		break;
 

  parent reply	other threads:[~2018-09-15  5:20 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-09-15  5:20 [dpdk-dev] [PATCH v3 0/5] vhost: vhost_user.c code cleanup Nikolay Nikolaev
2018-09-15  5:20 ` [dpdk-dev] [PATCH v3 1/5] vhost: unify VhostUserMsg usage Nikolay Nikolaev
2018-09-20 15:56   ` Burakov, Anatoly
2018-09-15  5:20 ` Nikolay Nikolaev [this message]
2018-09-15  5:20 ` [dpdk-dev] [PATCH v3 3/5] vhost: handle unsupported message types in functions Nikolay Nikolaev
2018-09-15  5:20 ` [dpdk-dev] [PATCH v3 4/5] vhost: unify message handling function signature Nikolay Nikolaev
2018-09-15  5:20 ` [dpdk-dev] [PATCH v3 5/5] vhost: message handling implemented as a callback array Nikolay Nikolaev
2018-09-19  7:37   ` Maxime Coquelin
2018-09-20  6:34     ` Nikolay Nikolaev

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=153698883388.23049.2819933386635765768.stgit@T460 \
    --to=nicknickolaev@gmail.com \
    --cc=dev@dpdk.org \
    --cc=maxime.coquelin@redhat.com \
    --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).