AuxXxilium/linux_dsm_epyc7002
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85740cdf0b
linux_dsm_epyc7002/drivers/net/ethernet
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Ben Hutchings 85740cdf0b sfc: Enable RX DMA scattering where possible 
Enable RX DMA scattering iff an RX buffer large enough for the current
MTU will not fit into a single page and the NIC supports DMA
scattering for kernel-mode RX queues.

On Falcon and Siena, the RX_USR_BUF_SIZE field is used as the DMA
limit for both all RX queues with scatter enabled.  Set it to 1824,
matching what Onload uses now.

Maintain a statistic for frames truncated due to lack of descriptors
(rx_nodesc_trunc).  This is distinct from rx_frm_trunc which may be
incremented when scattering is disabled and implies an over-length
frame.

Whenever an MTU change causes scattering to be turned on or off,
update filters that point to the PF queues, but leave others
unchanged, as VF drivers assume scattering is off.

Add n_frags parameters to various functions, and make them iterate:
- efx_rx_packet()
- efx_recycle_rx_buffers()
- efx_rx_mk_skb()
- efx_rx_deliver()

Make efx_handle_rx_event() responsible for updating
efx_rx_queue::removed_count.

Change the RX pipeline state to a starting ring index and number of
fragments, and make __efx_rx_packet() responsible for clearing it.

Based on earlier versions by David Riddoch and Jon Cooper.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
2013-03-07 20:22:12 +00:00
..
3com Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-01-29 15:32:13 -05:00
8390 Driver core patches for 3.9-rc1 2013-02-21 12:05:51 -08:00
adaptec drivers/net: fix up function prototypes after __dev* removals 2012-12-07 14:22:22 -05:00
adi Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-01-15 15:05:59 -05:00
aeroflex net: phy: remove flags argument from phy_{attach, connect, connect_direct} 2013-01-14 15:11:50 -05:00
alteon drivers/net: fix up function prototypes after __dev* removals 2012-12-07 14:22:22 -05:00
amd drivers: net: Remove remaining alloc/OOM messages 2013-02-08 17:44:39 -05:00
apple net/apple: remove __dev* attributes 2012-12-03 11:16:54 -08:00
atheros Driver core patches for 3.9-rc1 2013-02-21 12:05:51 -08:00
broadcom bnx2x: use the default NAPI weight 2013-03-05 23:40:01 -05:00
brocade bna: Driver Version Updated to 3.1.2.1 2012-12-11 18:25:53 -05:00
cadence net: macb: use module_platform_driver_probe() 2013-03-05 23:39:13 -05:00
calxeda Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-01-29 15:32:13 -05:00
chelsio Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2013-02-26 20:16:07 -08:00
cirrus net: cs89x0: use module_platform_driver_probe() 2013-03-05 23:39:13 -05:00
cisco enic: change sprintf() to snprintf() 2013-01-18 14:34:48 -05:00
davicom ethtool: fix drvinfo strings set in drivers 2013-01-06 21:06:31 -08:00
dec Driver core patches for 3.9-rc1 2013-02-21 12:05:51 -08:00
dlink drivers/net: delete old parallel port de600/de620 drivers 2013-01-22 10:39:49 -05:00
emulex be2net: remove BUG_ON() in be_mcc_compl_is_new() 2013-02-13 13:52:55 -05:00
faraday net: phy: remove flags argument from phy_{attach, connect, connect_direct} 2013-01-14 15:11:50 -05:00
freescale net: fec: fix build error in no MXC platform 2013-03-04 14:12:07 -05:00
fujitsu Driver core patches for 3.9-rc1 2013-02-21 12:05:51 -08:00
hp drivers/net: fix up function prototypes after __dev* removals 2012-12-07 14:22:22 -05:00
i825xx Driver core patches for 3.9-rc1 2013-02-21 12:05:51 -08:00
ibm net: ehea module param description fix 2013-02-18 12:26:36 -05:00
icplus drivers/net/ethernet/icplus: remove depends on CONFIG_EXPERIMENTAL 2013-01-22 12:01:33 -08:00
intel hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
marvell Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2013-02-21 17:40:58 -08:00
mellanox hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
micrel net: ks8851: convert to threaded IRQ 2013-01-29 13:32:00 -05:00
microchip Driver core patches for 3.9-rc1 2013-02-21 12:05:51 -08:00
myricom ethernet: Remove unnecessary alloc/OOM messages, alloc cleanups 2013-02-04 13:22:33 -05:00
natsemi Driver core patches for 3.9-rc1 2013-02-21 12:05:51 -08:00
neterion remove init of dev->perm_addr in drivers 2013-01-08 18:00:48 -08:00
nuvoton ethtool: fix drvinfo strings set in drivers 2013-01-06 21:06:31 -08:00
nvidia Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-01-15 15:05:59 -05:00
nxp net: phy: remove flags argument from phy_{attach, connect, connect_direct} 2013-01-14 15:11:50 -05:00
octeon ethtool: fix drvinfo strings set in drivers 2013-01-06 21:06:31 -08:00
oki-semi pch_gbe, ptp_pch: Fix the dependency direction between these drivers 2012-11-17 22:11:45 -05:00
packetengines Driver core patches for 3.9-rc1 2013-02-21 12:05:51 -08:00
pasemi net/pasemi: Fix missing coding style 2013-02-24 21:22:47 -05:00
qlogic hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
rdc r6040: check MDIO register busy waiting result 2013-03-06 15:40:53 -05:00
realtek r8169: honor jumbo settings when chipset is requested to start. 2013-02-28 15:37:29 -05:00
renesas ethernet: Remove unnecessary alloc/OOM messages, alloc cleanups 2013-02-04 13:22:33 -05:00
seeq Driver core patches for 3.9-rc1 2013-02-21 12:05:51 -08:00
sfc sfc: Enable RX DMA scattering where possible 2013-03-07 20:22:12 +00:00
sgi ethtool: fix drvinfo strings set in drivers 2013-01-06 21:06:31 -08:00
silan Driver core patches for 3.9-rc1 2013-02-21 12:05:51 -08:00
sis remove init of dev->perm_addr in drivers 2013-01-08 18:00:48 -08:00
smsc drivers: net: Remove remaining alloc/OOM messages 2013-02-08 17:44:39 -05:00
stmicro Driver core patches for 3.9-rc1 2013-02-21 12:05:51 -08:00
sun hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
tehuti ethtool: fix drvinfo strings set in drivers 2013-01-06 21:06:31 -08:00
ti drivers: net: ethernet: cpsw: consider number of slaves in interation 2013-02-26 17:26:11 -05:00
tile net: remove unnecessary NET_ADDR_RANDOM "bitclean" 2013-01-03 22:37:36 -08:00
toshiba net: phy: remove flags argument from phy_{attach, connect, connect_direct} 2013-01-14 15:11:50 -05:00
tundra
via Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2013-02-05 14:12:20 -05:00
wiznet net: remove unnecessary NET_ADDR_RANDOM "bitclean" 2013-01-03 22:37:36 -08:00
xilinx ethernet: Remove unnecessary alloc/OOM messages, alloc cleanups 2013-02-04 13:22:33 -05:00
xircom ethtool: fix drvinfo strings set in drivers 2013-01-06 21:06:31 -08:00
xscale net: phy: remove flags argument from phy_{attach, connect, connect_direct} 2013-01-14 15:11:50 -05:00
dnet.c net: phy: remove flags argument from phy_{attach, connect, connect_direct} 2013-01-14 15:11:50 -05:00
dnet.h
ethoc.c ethoc: Cleanup driver format 2013-01-29 14:07:05 -05:00
fealnx.c drivers/net: fix up function prototypes after __dev* removals 2012-12-07 14:22:22 -05:00
jme.c jme: remove __dev* attributes 2012-12-03 11:16:54 -08:00
jme.h
Kconfig drivers/net: delete old 8 bit ISA Racal ni5010 support. 2013-01-22 10:39:52 -05:00
korina.c ethtool: fix drvinfo strings set in drivers 2013-01-06 21:06:31 -08:00
lantiq_etop.c net: phy: remove flags argument from phy_{attach, connect, connect_direct} 2013-01-14 15:11:50 -05:00
Makefile drivers/net: delete old 8 bit ISA Racal ni5010 support. 2013-01-22 10:39:52 -05:00
netx-eth.c
s6gmac.c net: phy: remove flags argument from phy_{attach, connect, connect_direct} 2013-01-14 15:11:50 -05:00