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| -rw-r--r-- | content.tex | 93 |
1 files changed, 64 insertions, 29 deletions
diff --git a/content.tex b/content.tex index d6cafc6..9276d9b 100644 --- a/content.tex +++ b/content.tex @@ -2921,8 +2921,11 @@ assume the link is active, otherwise it SHOULD read the link status from the bottom bit of \field{status}. \subsubsection{Legacy Interface: Device configuration layout}\label{sec:Device Types / Network Device / Device configuration layout / Legacy Interface: Device configuration layout} -For legacy devices, \field{status} and \field{max_virtqueue_pairs} in struct virtio_net_config are the -native endian of the guest rather than (necessarily) little-endian. +When using the legacy interface, transitional devices and drivers +MUST format \field{status} and +\field{max_virtqueue_pairs} in struct virtio_net_config +according to the native endian of the guest rather than +(necessarily when not using the legacy interface) little-endian. \subsection{Device Initialization}\label{sec:Device Types / Network Device / Device Initialization} @@ -3008,8 +3011,10 @@ The controlq is used to control device features such as filtering. \subsubsection{Legacy Interface: Device Operation}\label{sec:Device Types / Network Device / Device Operation / Legacy Interface: Device Operation} -For legacy devices, the fields in struct virtio_net_hdr are the -native endian of the guest rather than (necessarily) little-endian. +When using the legacy interface, transitional devices and drivers +MUST format the fields in struct virtio_net_hdr +according to the native endian of the guest rather than +(necessarily when not using the legacy interface) little-endian. \subsubsection{Packet Transmission}\label{sec:Device Types / Network Device / Device Operation / Packet Transmission} @@ -3277,8 +3282,10 @@ MUST negotiate VIRTIO_NET_F_MAC_ADDR if they change mac address when device is accepting incoming packets. \subparagraph{Legacy Interface: Setting MAC Address Filtering}\label{sec:Device Types / Network Device / Device Operation / Control Virtqueue / Setting MAC Address Filtering / Legacy Interface: Setting MAC Address Filtering} -For legacy devices, \field{entries} in struct virtio_net_ctrl_mac is the -native endian of the guest rather than (necessarily) little-endian. +When using the legacy interface, transitional devices and drivers +MUST format \field{entries} in struct virtio_net_ctrl_mac +according to the native endian of the guest rather than +(necessarily when not using the legacy interface) little-endian. Legacy drivers that didn't negotiate VIRTIO_NET_F_MAC_ADDR changed \field{mac} in config space when NIC is accepting @@ -3303,8 +3310,10 @@ Both the VIRTIO_NET_CTRL_VLAN_ADD and VIRTIO_NET_CTRL_VLAN_DEL command take a little-endian 16-bit VLAN id as the command-specific-data. \subparagraph{Legacy Interface: VLAN Filtering}\label{sec:Device Types / Network Device / Device Operation / Control Virtqueue / VLAN Filtering / Legacy Interface: VLAN Filtering} -For legacy devices, the VLAN id is in the -native endian of the guest rather than (necessarily) little-endian. +When using the legacy interface, transitional devices and drivers +MUST format the VLAN id +according to the native endian of the guest rather than +(necessarily when not using the legacy interface) little-endian. \paragraph{Gratuitous Packet Sending}\label{sec:Device Types / Network Device / Device Operation / Control Virtqueue / Gratuitous Packet Sending} @@ -3412,8 +3421,10 @@ The device MUST NOT queue packets on receive queues greater than \field{virtqueue_pairs} once it has placed the VIRTIO_NET_CTRL_MQ_VQ_PAIRS_SET command in the used ring. \subparagraph{Legacy Interface: Automatic receive steering in multiqueue mode}\label{sec:Device Types / Network Device / Device Operation / Control Virtqueue / Automatic receive steering in multiqueue mode / Legacy Interface: Automatic receive steering in multiqueue mode} -For legacy devices, \field{virtqueue_pairs} is in the -native endian of the guest rather than (necessarily) little-endian. +When using the legacy interface, transitional devices and drivers +MUST format \field{virtqueue_pairs} +according to the native endian of the guest rather than +(necessarily when not using the legacy interface) little-endian. \paragraph{Offloads State Configuration}\label{sec:Device Types / Network Device / Device Operation / Control Virtqueue / Offloads State Configuration} @@ -3451,8 +3462,10 @@ A driver MUST NOT enable a offload for which the appropriate feature has not been negotiated. \subparagraph{Legacy Interface: Setting Offloads State}\label{sec:Device Types / Network Device / Device Operation / Control Virtqueue / Offloads State Configuration / Setting Offloads State / Legacy Interface: Setting Offloads State} -For legacy devices, \field{offloads} is the -native endian of the guest rather than (necessarily) little-endian. +When using the legacy interface, transitional devices and drivers +MUST format \field{offloads} +according to the native endian of the guest rather than +(necessarily when not using the legacy interface) little-endian. \section{Block Device}\label{sec:Device Types / Block Device} @@ -3540,8 +3553,10 @@ struct virtio_blk_config { \paragraph{Legacy Interface: Device configuration layout}\label{sec:Device Types / Block Device / Feature bits / Device configuration layout / Legacy Interface: Device configuration layout} -For legacy devices, the fields in struct virtio_blk_config are the -native endian of the guest rather than (necessarily) little-endian. +When using the legacy interface, transitional devices and drivers +MUST format the fields in struct virtio_blk_config +according to the native endian of the guest rather than +(necessarily when not using the legacy interface) little-endian. \subsection{Device Initialization}\label{sec:Device Types / Block Device / Device Initialization} @@ -3640,8 +3655,10 @@ Upon receipt of a VIRTIO_BLK_T_FLUSH request, the driver SHOULD ensure that any writes which were completed are committed to non-volatile storage. \subsubsection{Legacy Interface: Device Operation}\label{sec:Device Types / Block Device / Device Operation / Legacy Interface: Device Operation} -For legacy devices, the fields in struct virtio_blk_req are the -native endian of the guest rather than (necessarily) little-endian. +When using the legacy interface, transitional devices and drivers +MUST format the fields in struct virtio_blk_req +according to the native endian of the guest rather than +(necessarily when not using the legacy interface) little-endian. The \field{reserved} field was previously called \field{ioprio}. \field{ioprio} is a hint about the relative priorities of requests to the device: @@ -3795,8 +3812,10 @@ struct virtio_console_config { \end{lstlisting} \subsubsection{Legacy Interface: Device configuration layout}\label{sec:Device Types / Console Device / Device configuration layout / Legacy Interface: Device configuration layout} -For legacy devices, the fields in struct virtio_console_config are the -native endian of the guest rather than (necessarily) little-endian. +When using the legacy interface, transitional devices and drivers +MUST format the fields in struct virtio_console_config +according to the native endian of the guest rather than +(necessarily when not using the legacy interface) little-endian. \subsection{Device Initialization}\label{sec:Device Types / Console Device / Device Initialization} @@ -3936,8 +3955,10 @@ and MUST respond with a VIRTIO_CONSOLE_PORT_OPEN message, which MUST have \field{value} set to 1. \subsubsection{Legacy Interface: Device Operation}\label{sec:Device Types / Console Device / Device Operation / Legacy Interface: Device Operation} -For legacy devices, the fields in struct virtio_console_control are the -native endian of the guest rather than (necessarily) little-endian. +When using the legacy interface, transitional devices and drivers +MUST format the fields in struct virtio_console_control +according to the native endian of the guest rather than +(necessarily when not using the legacy interface) little-endian. \section{Entropy Device}\label{sec:Device Types / Entropy Device} @@ -4134,6 +4155,12 @@ struct virtio_balloon_stat { } __attribute__((packed)); \end{lstlisting} +\paragraph{Legacy Interface: Memory Statistics}\label{sec:Device Types / Memory Balloon Device / Device Operation / Memory Statistics / Legacy Interface: Memory Statistics} +When using the legacy interface, transitional devices and drivers +MUST format the fields in struct virtio_balloon_stat +according to the native endian of the guest rather than +(necessarily when not using the legacy interface) little-endian. + \subsubsection{Memory Statistics Tags}\label{sec:Device Types / Memory Balloon Device / Device Operation / Memory Statistics Tags} \begin{description} @@ -4271,8 +4298,10 @@ On reset, the device MUST set \field{sense_size} to 96 and \field{cdb_size} to 32. \subsubsection{Legacy Interface: Device configuration layout}\label{sec:Device Types / SCSI Host Device / Device configuration layout / Legacy Interface: Device configuration layout} -For legacy devices, the fields in struct virtio_scsi_config are the -native endian of the guest rather than (necessarily) little-endian. +When using the legacy interface, transitional devices and drivers +MUST format the fields in struct virtio_scsi_config +according to the native endian of the guest rather than +(necessarily when not using the legacy interface) little-endian. \subsection{Device Initialization}\label{sec:Device Types / SCSI Host Device / Device Initialization} @@ -4423,8 +4452,10 @@ following: \field{task_attr}, \field{prio} and \field{crn} SHOULD be zero. \paragraph{Legacy Interface: Device Operation: Request Queues}\label{sec:Device Types / SCSI Host Device / Device Operation / Device Operation: Request Queues / Legacy Interface: Device Operation: Request Queues} -For legacy devices, the fields in struct virtio_scsi_req_cmd are the -native endian of the guest rather than (necessarily) little-endian. +When using the legacy interface, transitional devices and drivers +MUST format the fields in struct virtio_scsi_req_cmd +according to the native endian of the guest rather than +(necessarily when not using the legacy interface) little-endian. \subsubsection{Device Operation: controlq}\label{sec:Device Types / SCSI Host Device / Device Operation / Device Operation: controlq} @@ -4567,10 +4598,12 @@ struct virtio_scsi_ctrl_an { \paragraph{Legacy Interface: Device Operation: controlq}\label{sec:Device Types / SCSI Host Device / Device Operation / Device Operation: controlq / Legacy Interface: Device Operation: controlq} -For legacy devices, the fields in struct virtio_scsi_ctrl, struct +When using the legacy interface, transitional devices and drivers +MUST format the fields in struct virtio_scsi_ctrl, struct virtio_scsi_ctrl_tmf, struct virtio_scsi_ctrl_an and struct -virtio_scsi_ctrl_an are the native endian of the guest rather than -(necessarily) little-endian. +virtio_scsi_ctrl_an +according to the native endian of the guest rather than +(necessarily when not using the legacy interface) little-endian. \subsubsection{Device Operation: eventq}\label{sec:Device Types / SCSI Host Device / Device Operation / Device Operation: eventq} @@ -4756,8 +4789,10 @@ VIRTIO_SCSI_EVT_RESET_RESCAN unless VIRTIO_SCSI_F_HOTPLUG was negotiated. The device MUST NOT report VIRTIO_SCSI_T_PARAM_CHANGE for MMC devices. \paragraph{Legacy Interface: Device Operation: eventq}\label{sec:Device Types / SCSI Host Device / Device Operation / Device Operation: eventq / Legacy Interface: Device Operation: eventq} -For legacy devices, the fields in struct virtio_scsi_event are the -native endian of the guest rather than (necessarily) little-endian. +When using the legacy interface, transitional devices and drivers +MUST format the fields in struct virtio_scsi_event +according to the native endian of the guest rather than +(necessarily when not using the legacy interface) little-endian. \chapter{Reserved Feature Bits}\label{sec:Reserved Feature Bits} |