Skip to content

R
raspberrypi-kernel

openeuler / raspberrypi-kernel

通知 13
Star 1
Fork 0
R
raspberrypi-kernel
切换分支/标签
  1. 10 1月, 2017 1 次提交
  3. 08 1月, 2017 2 次提交
    • G
      net: ethernet: ti: cpsw: add support for ringparam configuration · be034fc1
      由 Grygorii Strashko 提交于 
      The CPDMA uses one pool of descriptors for both RX and TX which by default
split between all channels proportionally depending on total number of
CPDMA channels and number of TX and RX channels. As result, more
descriptors will be consumed by TX path if there are more TX channels and
there is no way now to dedicate more descriptors for RX path.

So, add the ability to re-split CPDMA pool of descriptors between RX and TX
path via ethtool '-G' command wich will allow to configure and fix number
of descriptors used by RX and TX path, which, then, will be split between
RX/TX channels proportionally depending on RX/TX channels number and
weight. ethtool '-G' command will accept only number of RX entries and rest
of descriptors will be arranged for TX automatically.

Command:
  ethtool -G <devname> rx <number of descriptors>

defaults and limitations:
- minimum number of rx descriptors is 10% of total number of descriptors in
  CPDMA pool
- maximum number of rx descriptors is 90% of total number of descriptors in
  CPDMA pool
- by default, descriptors will be split equally between RX/TX path
- any values passed in "tx" parameter will be ignored

Usage:

 # ethtool -g eth0
	Pre-set maximums:
	RX:             7372
	RX Mini:        0
	RX Jumbo:       0
	TX:             0
	Current hardware settings:
	RX:             4096
	RX Mini:        0
	RX Jumbo:       0
	TX:             4096

 # ethtool -G eth0 rx 7372
 # ethtool -g eth0
	Ring parameters for eth0:
	Pre-set maximums:
	RX:             7372
	RX Mini:        0
	RX Jumbo:       0
	TX:             0
	Current hardware settings:
	RX:             7372
	RX Mini:        0
	RX Jumbo:       0
	TX:             820
Signed-off-by: NGrygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      be034fc1
    • G
      net: ethernet: ti: cpsw: add support for descs pool size configuration · 90225bf0
      由 Grygorii Strashko 提交于 
      The CPSW CPDMA can process buffer descriptors placed as in internal
CPPI RAM as in DDR. This patch adds support in CPSW and CPDMA for
descs_pool_size mudule parameter, which defines total number of CPDMA CPPI
descriptors to be used for both ingress/egress packets processing:
 - memory size, required for CPDMA descriptor pool, is calculated basing
on number of descriptors specified by user in descs_pool_size and
CPDMA descriptor size and allocated from coherent memory (CMA area);
 - CPDMA descriptor pool will be allocated in DDR if pool memory size >
internal CPPI RAM or use internal CPPI RAM otherwise;
 - if descs_pool_size not specified in DT - the default value 256 will
be used which will allow to place CPDMA descriptors pool into the
internal CPPI RAM (current default behaviour);
 - CPDMA will ignore descs_pool_size if descs_pool_size = 0 for
backward comaptiobility with davinci_emac.

descs_pool_size is boot time setting and can't be changed once
CPSW/CPDMA is initialized.
Signed-off-by: NGrygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      90225bf0
  5. 11 12月, 2016 5 次提交
  7. 08 12月, 2016 4 次提交
  9. 07 12月, 2016 1 次提交
  11. 01 12月, 2016 4 次提交
  13. 30 11月, 2016 3 次提交
  15. 19 11月, 2016 7 次提交
  17. 14 11月, 2016 1 次提交
  19. 13 10月, 2016 1 次提交
    • J
      net: deprecate eth_change_mtu, remove usage · a52ad514
      由 Jarod Wilson 提交于 
      With centralized MTU checking, there's nothing productive done by
eth_change_mtu that isn't already done in dev_set_mtu, so mark it as
deprecated and remove all usage of it in the kernel. All callers have been
audited for calls to alloc_etherdev* or ether_setup directly, which means
they all have a valid dev->min_mtu and dev->max_mtu. Now eth_change_mtu
prints out a netdev_warn about being deprecated, for the benefit of
out-of-tree drivers that might be utilizing it.

Of note, dvb_net.c actually had dev->mtu = 4096, while using
eth_change_mtu, meaning that if you ever tried changing it's mtu, you
couldn't set it above 1500 anymore. It's now getting dev->max_mtu also set
to 4096 to remedy that.

v2: fix up lantiq_etop, missed breakage due to drive not compiling on x86

CC: netdev@vger.kernel.org
Signed-off-by: NJarod Wilson <jarod@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      a52ad514
  21. 12 10月, 2016 1 次提交
  23. 27 8月, 2016 1 次提交
  25. 23 8月, 2016 4 次提交
  27. 11 8月, 2016 5 次提交