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Diffstat (limited to 'content.tex')
| -rw-r--r-- | content.tex | 86 |
1 files changed, 77 insertions, 9 deletions
diff --git a/content.tex b/content.tex index 98ebed4..3d7cf46 100644 --- a/content.tex +++ b/content.tex @@ -3643,32 +3643,93 @@ do except issue a diagnostic if \field{ack} is not VIRTIO_NET_OK. \paragraph{Packet Receive Filtering}\label{sec:Device Types / Network Device / Device Operation / Control Virtqueue / Packet Receive Filtering} +\label{sec:Device Types / Network Device / Device Operation / Control Virtqueue / Setting Promiscuous Mode}%old label for latexdiff -If the VIRTIO_NET_F_CTRL_RX feature is negotiated, the driver can -send control commands for promiscuous mode, multicast receiving, -and filtering of MAC addresses. +If the VIRTIO_NET_F_CTRL_RX and VIRTIO_NET_F_CTRL_RX_EXTRA +features are negotiated, the driver can send control commands for +promiscuous mode, multicast, unicast and broadcast receiving. \begin{note} In general, these commands are best-effort: unwanted packets could still arrive. \end{note} -\paragraph{Setting Promiscuous Mode}\label{sec:Device Types / Network Device / Device Operation / Control Virtqueue / Setting Promiscuous Mode} - \begin{lstlisting} #define VIRTIO_NET_CTRL_RX 0 #define VIRTIO_NET_CTRL_RX_PROMISC 0 #define VIRTIO_NET_CTRL_RX_ALLMULTI 1 + #define VIRTIO_NET_CTRL_RX_ALLUNI 2 + #define VIRTIO_NET_CTRL_RX_NOMULTI 3 + #define VIRTIO_NET_CTRL_RX_NOUNI 4 + #define VIRTIO_NET_CTRL_RX_NOBCAST 5 \end{lstlisting} -The class VIRTIO_NET_CTRL_RX has two commands: -VIRTIO_NET_CTRL_RX_PROMISC turns promiscuous mode on and off, and -VIRTIO_NET_CTRL_RX_ALLMULTI turns all-multicast receive on and + +\devicenormative{\subparagraph}{Packet Receive Filtering}{Device Types / Network Device / Device Operation / Control Virtqueue / Packet Receive Filtering} + +If the VIRTIO_NET_F_CTRL_RX feature has been negotiated, +the device MUST support the following VIRTIO_NET_CTRL_RX class +commands: +\begin{itemize} +\item VIRTIO_NET_CTRL_RX_PROMISC turns promiscuous mode on and +off. The command-specific-data is one byte containing 0 (off) or +1 (on). If promiscous mode is on, the device SHOULD receive all +incoming packets. +This SHOULD take effect even if one of the other modes set by +a VIRTIO_NET_CTRL_RX class command is on. +\item VIRTIO_NET_CTRL_RX_ALLMULTI turns all-multicast receive on and +off. The command-specific-data is one byte containing 0 (off) or +1 (on). When all-multicast receive is on the device SHOULD allow +all incoming multicast packets. +\end{itemize} + +If the VIRTIO_NET_F_CTRL_RX_EXTRA feature has been negotiated, +the device MUST support the following VIRTIO_NET_CTRL_RX class +commands: +\begin{itemize} +\item VIRTIO_NET_CTRL_RX_ALLUNI turns all-unicast receive on and off. The command-specific-data is one byte containing 0 (off) or -1 (on). +1 (on). When all-unicast receive is on the device SHOULD allow +all incoming unicast packets. +\item VIRTIO_NET_CTRL_RX_NOMULTI suppresses multicast receive. +The command-specific-data is one byte containing 0 (multicast +receive allowed) or 1 (multicast receive suppressed). +When multicast receive is suppressed, the device SHOULD NOT +send multicast packets to the driver. +This SHOULD take effect even if VIRTIO_NET_CTRL_RX_ALLMULTI is on. +This filter SHOULD NOT apply to broadcast packets. +\item VIRTIO_NET_CTRL_RX_NOUNI suppresses unicast receive. +The command-specific-data is one byte containing 0 (unicast +receive allowed) or 1 (unicast receive suppressed). +When unicast receive is suppressed, the device SHOULD NOT +send unicast packets to the driver. +This SHOULD take effect even if VIRTIO_NET_CTRL_RX_ALLUNI is on. +\item VIRTIO_NET_CTRL_RX_NOBCAST suppresses broadcast receive. +The command-specific-data is one byte containing 0 (broadcast +receive allowed) or 1 (broadcast receive suppressed). +When broadcast receive is suppressed, the device SHOULD NOT +send broadcast packets to the driver. +This SHOULD take effect even if VIRTIO_NET_CTRL_RX_ALLMULTI is on. +\end{itemize} + +\drivernormative{\subparagraph}{Packet Receive Filtering}{Device Types / Network Device / Device Operation / Control Virtqueue / Packet Receive Filtering} + +If the VIRTIO_NET_F_CTRL_RX feature has not been negotiated, +the driver MUST NOT issue commands VIRTIO_NET_CTRL_RX_PROMISC or +VIRTIO_NET_CTRL_RX_ALLMULTI. + +If the VIRTIO_NET_F_CTRL_RX_EXTRA feature has not been negotiated, +the driver MUST NOT issue commands + VIRTIO_NET_CTRL_RX_ALLUNI, + VIRTIO_NET_CTRL_RX_NOMULTI, + VIRTIO_NET_CTRL_RX_NOUNI or + VIRTIO_NET_CTRL_RX_NOBCAST. \paragraph{Setting MAC Address Filtering}\label{sec:Device Types / Network Device / Device Operation / Control Virtqueue / Setting MAC Address Filtering} +If the VIRTIO_NET_F_CTRL_RX feature is negotiated, the driver can +send control commands for MAC address filtering. + \begin{lstlisting} struct virtio_net_ctrl_mac { le32 entries; @@ -3715,6 +3776,13 @@ nor the MAC filtering table. \drivernormative{\subparagraph}{Setting MAC Address Filtering}{Device Types / Network Device / Device Operation / Control Virtqueue / Setting MAC Address Filtering} +If VIRTIO_NET_F_CTRL_RX has not been negotiated, +the driver MUST NOT issue VIRTIO_NET_CTRL_MAC class commands. + +If VIRTIO_NET_F_CTRL_RX has been negotiated, +the driver SHOULD issue VIRTIO_NET_CTRL_MAC_ADDR_SET +to set the default mac if it is different from \field{mac}. + The driver MUST follow the VIRTIO_NET_CTRL_MAC_TABLE_SET command by a le32 number, followed by that number of non-multicast MAC addresses, followed by another le32 number, followed by |