From: Maxime Coquelin <maxime.coquelin@redhat.com>
To: tiwei.bie@intel.com, zhihong.wang@intel.com,
jfreimann@redhat.com, dev@dpdk.org
Cc: mst@redhat.com, jasowang@redhat.com, wexu@redhat.com,
Maxime Coquelin <maxime.coquelin@redhat.com>
Subject: [dpdk-dev] [PATCH v8 02/15] vhost: add helpers for packed virtqueues
Date: Thu, 5 Jul 2018 23:07:28 +0200 [thread overview]
Message-ID: <20180705210741.17974-3-maxime.coquelin@redhat.com> (raw)
In-Reply-To: <20180705210741.17974-1-maxime.coquelin@redhat.com>
From: Jens Freimann <jfreimann@redhat.com>
Add some helper functions to check descriptor flags
and check if a vring is of type packed.
Signed-off-by: Jens Freimann <jfreimann@redhat.com>
Signed-off-by: Maxime Coquelin <maxime.coquelin@redhat.com>
---
lib/librte_vhost/vhost.h | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/lib/librte_vhost/vhost.h b/lib/librte_vhost/vhost.h
index 4fc804bd8..84088804b 100644
--- a/lib/librte_vhost/vhost.h
+++ b/lib/librte_vhost/vhost.h
@@ -344,6 +344,19 @@ struct virtio_net {
struct vhost_user_extern_ops extern_ops;
} __rte_cache_aligned;
+static __rte_always_inline bool
+vq_is_packed(struct virtio_net *dev)
+{
+ return dev->features & (1ull << VIRTIO_F_RING_PACKED);
+}
+
+static inline bool
+desc_is_avail(struct vring_desc_packed *desc, bool wrap_counter)
+{
+ return wrap_counter == !!(desc->flags & VRING_DESC_F_AVAIL) &&
+ wrap_counter != !!(desc->flags & VRING_DESC_F_USED);
+}
+
#define VHOST_LOG_PAGE 4096
/*
--
2.14.4
next prev parent reply other threads:[~2018-07-05 21:07 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-05 21:07 [dpdk-dev] [PATCH v8 00/15] Vhost: add support to packed ring layout Maxime Coquelin
2018-07-05 21:07 ` [dpdk-dev] [PATCH v8 01/15] vhost: add virtio packed virtqueue defines Maxime Coquelin
2018-07-06 2:52 ` Tiwei Bie
2018-07-06 6:34 ` Maxime Coquelin
2018-07-05 21:07 ` Maxime Coquelin [this message]
2018-07-05 21:07 ` [dpdk-dev] [PATCH v8 03/15] vhost: vring address setup for packed queues Maxime Coquelin
2018-07-05 21:07 ` [dpdk-dev] [PATCH v8 04/15] vhost: clear shadow used table index at flush time Maxime Coquelin
2018-07-05 21:07 ` [dpdk-dev] [PATCH v8 05/15] vhost: make indirect desc table copy desc type agnostic Maxime Coquelin
2018-07-05 21:07 ` [dpdk-dev] [PATCH v8 06/15] vhost: clear batch copy index at copy time Maxime Coquelin
2018-07-05 21:07 ` [dpdk-dev] [PATCH v8 07/15] vhost: extract split ring handling from Rx and Tx functions Maxime Coquelin
2018-07-05 21:07 ` [dpdk-dev] [PATCH v8 08/15] vhost: append shadow used ring function names with split Maxime Coquelin
2018-07-05 21:07 ` [dpdk-dev] [PATCH v8 09/15] vhost: add shadow used ring support for packed rings Maxime Coquelin
2018-07-05 21:07 ` [dpdk-dev] [PATCH v8 10/15] vhost: create descriptor mapping function Maxime Coquelin
2018-07-05 21:07 ` [dpdk-dev] [PATCH v8 11/15] vhost: add vector filling support for packed ring Maxime Coquelin
2018-07-05 21:07 ` [dpdk-dev] [PATCH v8 12/15] vhost: add Rx " Maxime Coquelin
2018-07-05 21:07 ` [dpdk-dev] [PATCH v8 13/15] vhost: add Tx " Maxime Coquelin
2018-07-05 21:07 ` [dpdk-dev] [PATCH v8 14/15] vhost: add notification " Maxime Coquelin
2018-07-05 21:07 ` [dpdk-dev] [PATCH v8 15/15] vhost: advertize packed ring layout support Maxime Coquelin
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