openslx-ng/ipxe.git/src/net/ethernet.c, branch v1.20.1

[ethernet] Avoid false positive Coverity warning

2019-08-17T16:30:09+00:00

Signed-off-by: Michael Brown

[ethernet] Use standard 1500 byte MTU unless explicitly overridden

2018-07-17T11:14:43+00:00

Devices that support jumbo frames will currently default to the largest possible MTU. This assumption is valid for virtual adapters such as virtio-net, where the MTU must have been configured by a system administrator, but is unsafe in the general case of a physical adapter. Default to the standard Ethernet MTU, unless explicitly overridden either by the driver or via the ${netX/mtu} setting. Signed-off-by: Michael Brown

[ethernet] Make LACP support configurable at build time

2016-04-18T09:08:46+00:00

Add a build configuration option NET_PROTO_LACP to control whether or not LACP support is included for Ethernet devices. Signed-off-by: Michael Brown

[ethernet] Add minimal support for receiving LLC frames

2015-06-25T14:28:42+00:00

In some Ethernet framing variants the two-byte protocol field is used as a length, with the Ethernet header being followed by an IEEE 802.2 LLC header. The first two bytes of the LLC header are the DSAP and SSAP. If the received Ethernet packet appears to use this framing, then interpret the two-byte DSAP and SSAP as being the network-layer protocol. This allows support for receiving Spanning Tree Protocol frames (which use an LLC header with {DSAP,SSAP}=0x4242) to be added without requiring a full LLC protocol layer. Signed-off-by: Michael Brown

[build] Fix the REQUIRE_SYMBOL mechanism

2015-03-05T00:59:38+00:00

At some point in the past few years, binutils became more aggressive at removing unused symbols. To function as a symbol requirement, a relocation record must now be in a section marked with @progbits and must not be in a section which gets discarded during the link (either via --gc-sections or via /DISCARD/). Update REQUIRE_SYMBOL() to generate relocation records meeting these criteria. To minimise the impact upon the final binary size, we use existing symbols (specified via the REQUIRING_SYMBOL() macro) as the relocation targets where possible. We use R_386_NONE or R_X86_64_NONE relocation types to prevent any actual unwanted relocation taking place. Where no suitable symbol exists for REQUIRING_SYMBOL() (such as in config.c), the macro PROVIDE_REQUIRING_SYMBOL() can be used to generate a one-byte-long symbol to act as the relocation target. If there are versions of binutils for which this approach fails, then the fallback will probably involve killing off REQUEST_SYMBOL(), redefining REQUIRE_SYMBOL() to use the current definition of REQUEST_SYMBOL(), and postprocessing the linked ELF file with something along the lines of "nm -u | wc -l" to check that there are no undefined symbols remaining. Signed-off-by: Michael Brown

[build] Use REQUIRE_OBJECT() to drag in per-object configuration

2015-03-05T00:57:44+00:00

Signed-off-by: Michael Brown

[legal] Relicense files under GPL2_OR_LATER_OR_UBDL

2015-03-02T16:35:29+00:00

These files cannot be automatically relicensed by util/relicense.pl since they either contain unusual but trivial contributions (such as the addition of __nonnull function attributes), or contain lines dating back to the initial git revision (and so require manual knowledge of the code's origin). Signed-off-by: Michael Brown

[ethernet] Provide eth_random_addr() to generate random Ethernet addresses

2014-06-01T22:32:24+00:00

Modified-by: Michael Brown Signed-off-by: Michael Brown

[ethernet] Add support for generating multicast hash for IPv6 addresses

2013-09-03T01:02:51+00:00

Signed-off-by: Michael Brown

[netdevice] Add method for generating EUI-64 address from link-layer address

2013-09-03T00:24:15+00:00

Signed-off-by: Michael Brown