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0b725a2ca6
linux/drivers/net/ethernet
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David S. Miller 0b725a2ca6 net: Remove ndo_xmit_flush netdev operation, use signalling instead. 
As reported by Jesper Dangaard Brouer, for high packet rates the
overhead of having another indirect call in the TX path is
non-trivial.

There is the indirect call itself, and then there is all of the
reloading of the state to refetch the tail pointer value and
then write the device register.

Move to a more passive scheme, which requires very light modifications
to the device drivers.

The signal is a new skb->xmit_more value, if it is non-zero it means
that more SKBs are pending to be transmitted on the same queue as the
current SKB.  And therefore, the driver may elide the tail pointer
update.

Right now skb->xmit_more is always zero.

Signed-off-by: David S. Miller <davem@davemloft.net>
2014-08-25 16:29:42 -07:00
..
3com PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
8390 PCI changes for the v3.17 merge window (part 2): 2014-08-14 18:10:33 -06:00
adaptec PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
adi bfin_mac: convert bfin Ethernet driver to NAPI framework 2014-07-24 23:35:42 -07:00
aeroflex
allwinner net: sun4i-emac: fix memory leak on bad packet 2014-08-05 16:43:49 -07:00
alteon PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
altera Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2014-05-24 00:32:30 -04:00
amd PCI changes for the v3.17 merge window (part 2): 2014-08-14 18:10:33 -06:00
apm net: xgene: fix possible NULL dereference in xgene_enet_free_desc_rings() 2014-08-22 11:25:25 -07:00
apple
arc arc_emac: Remove unused pointer to net_device from arc_emac_priv 2014-07-09 16:49:21 -07:00
atheros PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
broadcom net/bnx2x: Use is_kdump_kernel() to detect kdump kernel 2014-08-25 15:42:19 -07:00
brocade PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
cadence net/macb: enable scatter-gather feature and set DMA burst length for sama5d4 gem 2014-07-24 23:39:55 -07:00
calxeda net: get rid of SET_ETHTOOL_OPS 2014-05-13 17:43:20 -04:00
chelsio cxgb4: Free completed tx skbs promptly 2014-08-21 21:54:52 -07:00
cirrus cirrus: cs89x0: Use managed interfaces 2014-08-02 16:40:52 -07:00
cisco PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
davicom dm9000: Remove typedef board_info_t 2014-08-08 10:38:13 -07:00
dec PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
dlink PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
emulex PCI changes for the v3.17 merge window (part 2): 2014-08-14 18:10:33 -06:00
faraday net: get rid of SET_ETHTOOL_OPS 2014-05-13 17:43:20 -04:00
freescale net: fec: ptp: avoid register access when ipg clock is disabled 2014-08-22 10:45:56 -07:00
fujitsu drivers/net: ethernet: Remove typedef for struct and enum 2014-08-07 16:02:58 -07:00
hisilicon net: hisilicon: add hix5hd2 mac driver 2014-06-02 23:39:05 -07:00
hp PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
i825xx
ibm ibmveth: Fix endian issues with rx_no_buffer statistic 2014-08-22 11:28:00 -07:00
icplus PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
intel net: Remove ndo_xmit_flush netdev operation, use signalling instead. 2014-08-25 16:29:42 -07:00
marvell PCI changes for the v3.17 merge window (part 2): 2014-08-14 18:10:33 -06:00
mellanox PCI changes for the v3.17 merge window (part 2): 2014-08-14 18:10:33 -06:00
micrel PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
microchip net: get rid of SET_ETHTOOL_OPS 2014-05-13 17:43:20 -04:00
moxa
myricom PCI changes for the v3.17 merge window (part 2): 2014-08-14 18:10:33 -06:00
natsemi PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
neterion PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
nuvoton
nvidia PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
nxp lpc_eth: Use resource_size instead of computation 2014-06-03 16:08:52 -07:00
octeon octeon: remove deprecated syststamp timestamp 2014-07-29 11:39:49 -07:00
oki-semi PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
packetengines PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
pasemi PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
qlogic qlcnic: Fix endianess issue in firmware load from file operation 2014-08-21 17:43:15 -07:00
rdc PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
realtek r8169:add support for RTL8168H and RTL8107E 2014-08-22 12:33:47 -07:00
renesas net: sh_eth: Add r8a7794 support 2014-08-02 16:38:32 -07:00
samsung net: sxgbe: remove duplicate SXGBE_CORE_L34_ADDCTL_REG define 2014-06-11 15:01:30 -07:00
seeq
sfc PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
sgi PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
silan PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
sis PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
smsc PCI changes for the v3.17 merge window (part 2): 2014-08-14 18:10:33 -06:00
stmicro stmmac: simple cleanups 2014-08-25 15:13:15 -07:00
sun PCI changes for the v3.17 merge window (part 2): 2014-08-14 18:10:33 -06:00
tehuti PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
ti PCI changes for the v3.17 merge window (part 2): 2014-08-14 18:10:33 -06:00
tile net: set name_assign_type in alloc_netdev() 2014-07-15 16:12:48 -07:00
toshiba PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
tundra
via PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
wiznet
xilinx net: xilinx: Remove .owner field for driver 2014-08-14 14:38:54 -07:00
xircom ethernet: amd: Remove typedef local_info_t 2014-08-11 12:19:53 -07:00
xscale
dnet.c net: dnet: Use managed interfaces 2014-08-02 16:40:52 -07:00
dnet.h
ec_bhf.c net: ec_bhf: remove excessive debug messages 2014-08-24 18:36:57 -07:00
ethoc.c
fealnx.c PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
jme.c PCI: Remove DEFINE_PCI_DEVICE_TABLE macro use 2014-08-12 12:15:14 -06:00
jme.h
Kconfig drivers: net: Add APM X-Gene SoC ethernet driver support. 2014-08-11 11:50:33 -07:00
korina.c
lantiq_etop.c
Makefile drivers: net: Add APM X-Gene SoC ethernet driver support. 2014-08-11 11:50:33 -07:00
netx-eth.c
s6gmac.c