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openwrt/package/kernel/lantiq/vrx518_tc/patches
Andrew MacIntyre ca53f2d430 vrx518_tc: allow larger MTU to support RFC4638
vrx518_tc currently sets the interface maximum MTU to the ethernet default
of 1500 bytes by default via ether_setup() called from ptm_setup().

To support 1508 byte baby jumbo frames (RFC4638) for PPPoE connections
over VDSL links as already supported by the VR9 ltq_ptm driver ([1], [2])
set the interface maximum MTU to MAX_MTU.

MAX_MTU is defined in dcdp/inc/tc_common.h to 2002 bytes and this value is
used in ptm_change_mtu() and elsewhere as the maximum MTU, however this is
short circuited by checks against the interface maximum MTU.

[1]: https://forum.openwrt.org/t/fritzbox-7530-and-rfc4638-baby-jumbo-frames/181327
[2]: https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=8a2a20e71e2909f84dab47e51dfda9e292a6c1ae

Signed-off-by: Andrew MacIntyre <andymac@pcug.org.au>
Link: https://github.com/openwrt/openwrt/pull/16856
Signed-off-by: Robert Marko <robimarko@gmail.com>
2024-11-08 17:22:31 +01:00
..
100-compat.patch vrx518_tc: fix compilation error with kernel 6.1 2023-08-27 19:26:53 +02:00
200-swplat.patch vrx518_tc: fix compilation error with kernel 6.1 2023-08-27 19:26:53 +02:00
201-desc-length.patch vrx518_tc: fix compilation error with kernel 6.1 2023-08-27 19:26:53 +02:00
202-napi.patch vrx518_tc: fix compilation error with kernel 6.1 2023-08-27 19:26:53 +02:00
203-dbg.patch
204-dcdp-atm_tc-fix-compilation-warning.patch kernel: lantiq: vrx518_tc: add patch fix compilation warning for atm_tc 2023-05-12 03:15:44 +02:00
205-dcdp-ptm_tc-dynamically-alloc-mib.patch vrx518_tc: fix compilation error with kernel 6.1 2023-08-27 19:26:53 +02:00
206-dcdp-ptm_tc-allow-larger-mtu-to-support-rfc4638.patch vrx518_tc: allow larger MTU to support RFC4638 2024-11-08 17:22:31 +01:00