[PATCH 0/2] D_CAN RX buffer size improvements
Re-sending entire patchset due to missed cover letter, sorry.
This patchset introduces support for 64 D_CAN message objects with an option of
unequal split between RX/TX.
The rationale behind this is that there are lots of frame loss on higher bus
speeds. Below are test results from my custom Sitara AM3352 based board:
Sender: timeout 15m cangen can0 -g 0 -i x
Target: candump can0,0~0,#FFFFFFFF -td -c -d -e
* Without patches:
- 15 minute RX test, 500kbps
- 16 RX / 16 TX message objects
- 77 received frames lost out of 4649415
* With patches applied:
- 15 hours RX test, 500kbps
- 56 RX / 8 TX message objects
- 41 received frames lost out of 279303376
Please note, I do not have ability to test pure C_CAN, so it is left untested.
Andrejs Cainikovs (2):
can: c_can: support 64 message objects for D_CAN
can: c_can: configurable amount of D_CAN RX objects
drivers/net/can/c_can/Kconfig | 20 ++++++++++
drivers/net/can/c_can/c_can.c | 93 +++++++++++++++++++++++++++----------------
drivers/net/can/c_can/c_can.h | 20 +++++++---
3 files changed, 94 insertions(+), 39 deletions(-)