[PATCH 0/9] Reduce usage of NetRxPackets[]

Sascha Hauer s.hauer at pengutronix.de
Mon Sep 19 01:01:24 PDT 2022


Usage of the globally allocted network receive buffers NetRxPackets[] is
inherently broken. Some drivers queue these buffers in the hardware.
When multiple of these drivers are active at the same time then they
stamp over each others packets and bad things happen.

The goal is to remove NetRxPackets[] entirely in favor of per device
packet buffers. This series is a first step into that direction. It
removes the simple cases where only NetRxPackets[0] is used to store the
single packet that is pulled out of the hardware before net_receive() is
called.

Sascha

Sascha Hauer (9):
  net: tap: Allocate own receive buffer
  net: macb: Allocate own receive buffer
  net: cs8900: Allocate own receive buffer
  net: liteeth: Do not use NetRxPackets
  net: efi-snp: Allocate own receive buffer
  net: smc91111: Allocate own receive buffer
  net: smc911x: Allocate own receive buffer
  net: ks8851_mll: Allocate own receive buffer
  net: remove altera_tse driver

 drivers/net/Kconfig      |  16 --
 drivers/net/Makefile     |   1 -
 drivers/net/altera_tse.c | 563 ---------------------------------------
 drivers/net/altera_tse.h | 296 --------------------
 drivers/net/cs8900.c     |   7 +-
 drivers/net/efi-snp.c    |   6 +-
 drivers/net/ks8851_mll.c |   9 +-
 drivers/net/liteeth.c    |   8 +-
 drivers/net/macb.c       |  12 +-
 drivers/net/smc91111.c   |  10 +-
 drivers/net/smc911x.c    |   8 +-
 drivers/net/tap.c        |   7 +-
 12 files changed, 45 insertions(+), 898 deletions(-)
 delete mode 100644 drivers/net/altera_tse.c
 delete mode 100644 drivers/net/altera_tse.h

-- 
2.30.2




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