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...t can used for multiqueue operation. + The following read-only fields: +\emph on +current_steering_rule +\emph default +, +\emph on +reserved +\emph default + and +\emph on +current_steering_param +\emph default + store the last successful VIRTIO_NET_CTRL_STEERING +\begin_inset CommandInset ref +LatexCommand ref +reference "sub:Transmit-Packet-Steering" + +\end_inset + + command executed by driver, for debugging. + +\change_unchanged \begin_inset listings inline false @@ -4105,6 +4182,40 @@ struct virtio_net_config { \begin_layout Plain Layout u16 status; +\change_inserted 198624...

...t can used for multiqueue operation. + The following read-only fields: +\emph on +current_steering_rule +\emph default +, +\emph on +reserved +\emph default + and +\emph on +current_steering_param +\emph default + store the last successful VIRTIO_NET_CTRL_STEERING +\begin_inset CommandInset ref +LatexCommand ref +reference "sub:Transmit-Packet-Steering" + +\end_inset + + command executed by driver, for debugging. + +\change_unchanged \begin_inset listings inline false @@ -4105,6 +4182,40 @@ struct virtio_net_config { \begin_layout Plain Layout u16 status; +\change_inserted 198624...

...an be used for multiqueue operation. + The following read-only fields: +\emph on +current_steering_rule +\emph default +, +\emph on +reserved +\emph default + and +\emph on +current_steering_param +\emph default + store the last successful VIRTIO_NET_CTRL_STEERING +\begin_inset CommandInset ref +LatexCommand ref +reference "sub:Transmit-Packet-Steering" + +\end_inset + + command executed by driver, for debugging purposes. + +\change_unchanged \begin_inset listings inline false @@ -4105,6 +4182,40 @@ struct virtio_net_config { \begin_layout Plain Layout u16 status; +\change_insert...

...an be used for multiqueue operation. + The following read-only fields: +\emph on +current_steering_rule +\emph default +, +\emph on +reserved +\emph default + and +\emph on +current_steering_param +\emph default + store the last successful VIRTIO_NET_CTRL_STEERING +\begin_inset CommandInset ref +LatexCommand ref +reference "sub:Transmit-Packet-Steering" + +\end_inset + + command executed by driver, for debugging purposes. + +\change_unchanged \begin_inset listings inline false @@ -4105,6 +4182,40 @@ struct virtio_net_config { \begin_layout Plain Layout u16 status; +\change_insert...

Changes from v2: added padding between avail idx and flags, and changed virtio to only publish used index when callbacks are enabled. Here's a rewrite of the original patch with a new layout. I haven't tested it yet so no idea how this performs, but I think this addresses the cache bounce issue raised by Avi. Posting for early flames/comments. Generally, the Host end of the virtio ring

Changes from v2: added padding between avail idx and flags, and changed virtio to only publish used index when callbacks are enabled. Here's a rewrite of the original patch with a new layout. I haven't tested it yet so no idea how this performs, but I think this addresses the cache bounce issue raised by Avi. Posting for early flames/comments. Generally, the Host end of the virtio ring

Here's a rewrite of the original patch with a new layout. I haven't tested it yet so no idea how this performs, but I think this addresses the cache bounce issue raised by Avi. Posting for early flames/comments. Generally, the Host end of the virtio ring doesn't need to see where Guest is up to in consuming the ring. However, to completely understand what's going on from the

Here's a rewrite of the original patch with a new layout. I haven't tested it yet so no idea how this performs, but I think this addresses the cache bounce issue raised by Avi. Posting for early flames/comments. Generally, the Host end of the virtio ring doesn't need to see where Guest is up to in consuming the ring. However, to completely understand what's going on from the

...t is reserved, and will be used to indicate the presence of future feature bits elsewhere). - The bits are allocated as follows: + +\change_inserted 1 1304331636 +If more than 31 feature bits are supported, the device indicates so by setting + feature bit 31 (see +\begin_inset CommandInset ref +LatexCommand ref +reference "cha:Reserved-Feature-Bits" + +\end_inset + +). + +\change_unchanged +The bits are allocated as follows: \end_layout \begin_layout Description @@ -1372,7 +1583,33 @@ to \begin_inset space ~ \end_inset -30 Feature bits reserved for extensions to the queue mechanism...

...t is reserved, and will be used to indicate the presence of future feature bits elsewhere). - The bits are allocated as follows: + +\change_inserted 1 1304331636 +If more than 31 feature bits are supported, the device indicates so by setting + feature bit 31 (see +\begin_inset CommandInset ref +LatexCommand ref +reference "cha:Reserved-Feature-Bits" + +\end_inset + +). + +\change_unchanged +The bits are allocated as follows: \end_layout \begin_layout Description @@ -1372,7 +1583,33 @@ to \begin_inset space ~ \end_inset -30 Feature bits reserved for extensions to the queue mechanism...

...ng gratuitous packets \begin_layout Enumerate Sending VIRTIO_NET_CTRL_ANNOUNCE_ACK command through control vq. +\change_deleted 1986246365 1346662247 + \end_layout -\begin_layout Enumerate +\begin_layout Subsection* + +\change_inserted 1986246365 1346932658 +\begin_inset CommandInset label +LatexCommand label +name "sub:Transmit-Packet-Steering" + +\end_inset + +Transmit Packet Steering +\end_layout + +\begin_layout Standard + +\change_inserted 1986246365 1346932658 +When VIRTIO_NET_F_MULTIQUEUE feature bit is negotiated, guest can use any + of multiple configured transmit queues to tran...

...ng gratuitous packets \begin_layout Enumerate Sending VIRTIO_NET_CTRL_ANNOUNCE_ACK command through control vq. +\change_deleted 1986246365 1346662247 + \end_layout -\begin_layout Enumerate +\begin_layout Subsection* + +\change_inserted 1986246365 1346932658 +\begin_inset CommandInset label +LatexCommand label +name "sub:Transmit-Packet-Steering" + +\end_inset + +Transmit Packet Steering +\end_layout + +\begin_layout Standard + +\change_inserted 1986246365 1346932658 +When VIRTIO_NET_F_MULTIQUEUE feature bit is negotiated, guest can use any + of multiple configured transmit queues to tran...

...t is reserved, and will be used to indicate the presence of future feature bits elsewhere). - The bits are allocated as follows: + +\change_inserted 0 1304331636 +If more than 31 feature bits are supported, the device indicates so by setting + feature bit 31 (see +\begin_inset CommandInset ref +LatexCommand ref +reference "cha:Reserved-Feature-Bits" + +\end_inset + +). + +\change_unchanged +The bits are allocated as follows: \end_layout \begin_layout Description @@ -1372,7 +1564,33 @@ to \begin_inset space ~ \end_inset -30 Feature bits reserved for extensions to the queue mechanism...

...t is reserved, and will be used to indicate the presence of future feature bits elsewhere). - The bits are allocated as follows: + +\change_inserted 0 1304331636 +If more than 31 feature bits are supported, the device indicates so by setting + feature bit 31 (see +\begin_inset CommandInset ref +LatexCommand ref +reference "cha:Reserved-Feature-Bits" + +\end_inset + +). + +\change_unchanged +The bits are allocated as follows: \end_layout \begin_layout Description @@ -1372,7 +1564,33 @@ to \begin_inset space ~ \end_inset -30 Feature bits reserved for extensions to the queue mechanism...

...thor "" +\author "" \author "" \end_header @@ -1784,6 +1785,9 @@ \begin_layout Standard The number of descriptors in the table is specified by the Queue Size field for this virtqueue. +\end_layout + +\begin_layout Subsection \begin_inset CommandInset label LatexCommand label name "sub:Indirect-Descriptors" @@ -2076,8 +2080,8 @@ and processing used buffers from the device. As an example, the virtio network device has two virtqueues: the transmit virtqueue and the receive virtqueue. - The driver adds outgoing (read-only) packets are added to the tr...

...thor "" +\author "" \author "" \end_header @@ -1784,6 +1785,9 @@ \begin_layout Standard The number of descriptors in the table is specified by the Queue Size field for this virtqueue. +\end_layout + +\begin_layout Subsection \begin_inset CommandInset label LatexCommand label name "sub:Indirect-Descriptors" @@ -2076,8 +2080,8 @@ and processing used buffers from the device. As an example, the virtio network device has two virtqueues: the transmit virtqueue and the receive virtqueue. - The driver adds outgoing (read-only) packets are added to the tr...