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path: root/src/net/vlan.c
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* [build] Mark core files as permitted for UEFI Secure BootMichael Brown2026-01-141-0/+1
| | | | | | | | | | | | Mark all files used in a standard build of bin-x86_64-efi/snponly.efi as permitted for UEFI Secure Boot. These files represent the core functionality of iPXE that is guaranteed to have been included in every binary that was previously subject to a security review and signed by Microsoft. It is therefore legitimate to assume that at least these files have already been reviewed to the required standard multiple times. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [netdevice] Allocate private data for each network upper-layer driverMichael Brown2023-09-131-3/+6
| | | | | | | | | | | | | | | | | Allow network upper-layer drivers (such as LLDP, which attaches to each network device in order to provide a corresponding LLDP settings block) to specify a size for private data, which will be allocated as part of the network device structure (as with the existing private data allocated for the underlying device driver). This will allow network upper-layer drivers to be simplified by omitting memory allocation and freeing code. If the upper-layer driver requires a reference counter (e.g. for interface initialisation), then it may use the network device's existing reference counter, since this is now the reference counter for the containing block of memory. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [vlan] Support automatic VLAN device creationMichael Brown2023-01-151-0/+48
| | | | | | | Add the ability to automatically create a VLAN device for a specified trunk device link-layer address and VLAN tag. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [efi] Provide VLAN configuration protocolMichael Brown2022-12-141-2/+1Star
| | | | | | | | | | | | | | | | | | | | | | | UEFI implements VLAN support within the Managed Network Protocol (MNP) driver, which may create child VLAN devices automatically based on stored UEFI variables. These child devices do not themselves provide a raw-packet interface via EFI_SIMPLE_NETWORK_PROTOCOL, and may be consumed only via the EFI_MANAGED_NETWORK_PROTOCOL interface. The device paths constructed for these child devices may conflict with those for the EFI_SIMPLE_NETWORK_PROTOCOL instances that iPXE attempts to install for its own VLAN devices. The upshot is that creating an iPXE VLAN device (e.g. via the "vcreate" command) will fail if the UEFI Managed Network Protocol has already created a device for the same VLAN tag. Fix by providing our own EFI_VLAN_CONFIG_PROTOCOL instance on the same device handle as EFI_SIMPLE_NETWORK_PROTOCOL. This causes the MNP driver to treat iPXE's device as supporting hardware VLAN offload, and it will therefore not attempt to install its own instance of the protocol. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [vlan] Allow external code to identify VLAN priority as well as tagMichael Brown2022-12-141-4/+4
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [vlan] Provide vlan_netdev_rx() and vlan_netdev_rx_err()Michael Brown2019-04-271-1/+46
| | | | | | | | | The Hermon driver uses vlan_find() to identify the appropriate VLAN device for packets that are received with the VLAN tag already stripped out by the hardware. Generalise this capability and expose it for use by other network card drivers. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [netdevice] Allow network devices to disclaim IRQ support at runtimeMichael Brown2015-07-281-0/+4
| | | | | | | | | | | | | | | | VLAN and 802.11 devices use a network device operations structure that wraps an underlying structure. For example, the vlan_operations structure wraps the network device operations structure of the underlying trunk device. This can cause false positives from the current implementation of netdev_irq_supported(), which will always report that VLAN devices support interrupts since it has no visibility into the support provided by the underlying trunk device. Fix by allowing network devices to explicitly flag that interrupts are not supported, despite the presence of an irq() method. Originally-fixed-by: Wissam Shoukair <wissams@mellanox.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [legal] Relicense files under GPL2_OR_LATER_OR_UBDLMichael Brown2015-03-051-1/+5
| | | | | | | | | | | Relicense files with kind permission from Stefan Hajnoczi <stefanha@redhat.com> alongside the contributors who have already granted such relicensing permission. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [netdevice] Make all net_driver methods optionalMichael Brown2013-11-011-11/+0Star
| | | | | | | | Most network upper-layer drivers do not implement all three methods (probe, notify, and remove). Save code by making all methods optional. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [netdevice] Add vlan_tag() to get the VLAN tag of a network deviceStefan Hajnoczi2013-03-011-0/+17
| | | | | | | | | | | | The iBFT has a VLAN field that should be filled in. Add the vlan_tag() function to extract the VLAN tag of a network device. Since VLAN support is optional, define a weak function that returns 0 when iPXE is built without VLAN support. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Modified-by: Michael Brown <mcb30@ipxe.org> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [legal] Update FSF mailing address in GPL licence textsMichael Brown2012-07-201-1/+2
| | | | | Suggested-by: Daniel P. Berrange <berrange@redhat.com> Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [netdevice] Allow link layer to report broadcast/multicast packets via pull()Michael Brown2011-07-151-2/+5
| | | | | | | | Allow the link layer to directly report whether or not a packet is multicast or broadcast at the time of calling pull(), rather than relying on heuristics to determine this at a later stage. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [vlan] Expose vlan_find() to network card driversMichael Brown2010-12-011-2/+1Star
| | | | | | | | | Some network cards automatically strip the VLAN header, providing the VLAN tag via a side channel such as a completion queue entry. These cards need to be able to report receive completions directly against the relevant VLAN device. Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [vlan] Use "-" instead of "." as separator in VLAN device namesMichael Brown2010-12-011-1/+1
| | | | | | | | | | | | | | | | | VLAN device names have the form "netX.Y", e.g. "net0.5" for VLAN 5 on net0. This use of "." conflicts with the use of "." as the hierarchical separator in settings block names, with the result that VLAN device settings cannot be accessed by name. It would be trivial to treat the VLAN device settings as being a child of the trunk device settings, but this would cause the VLAN device settings to be applied to the trunk device: for example, setting "net0.5/ip" would then apply the IP address to both net0.5 and net0. Fix by changing the VLAN device name to use "-" instead of ".": the VLAN device "net0.5" is now "net0-5". Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [vlan] Provide vlan_can_be_trunk()Michael Brown2010-11-261-8/+23
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [vlan] Add non-error debug messagesMichael Brown2010-11-261-0/+5
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [vlan] Allow duplicate VLAN creation attemptsMichael Brown2010-11-261-5/+11
| | | | Signed-off-by: Michael Brown <mcb30@ipxe.org>
* [vlan] Add support for IEEE 802.1Q VLANsMichael Brown2010-11-201-0/+465
Originally-implemented-by: michael-dev@fami-braun.de Signed-off-by: Michael Brown <mcb30@ipxe.org>
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