leandrof/linux
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity
541ea69a90
linux/drivers/net/ethernet
History
Alexander Duyck 541ea69a90 ixgbe: Add support for maximum headroom when using build_skb 
This patch increases the headroom allocated when using build_skb on a
system with 4K pages.  Specifically the breakdown of headroom versus cache
size is as follows:
    L1 Cache Size           Headroom
    64                      192
    64, NET_IP_ALIGN == 2   194
    128                     128
    128, NET_IP_ALIGN == 2  130
    256                     512
    256, NET_IP_ALIGN == 2  258

I stopped at supporting only a cache line size of 256 as that was the
largest cache size I could find supported in the kernel.

With this we are guaranteeing at least 128 bytes of headroom to spare in
the frame.  This should be enough for us to insert a couple of IPv6 headers
if needed which is likely enough room for anything XDP should need.

I'm leaving the padding for systems with pages larger than 4K unmodified
for now.  XDP currently isn't really setup to work on those types of
systems so we can cross that bridge when we get there.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2017-04-18 13:32:45 -07:00
..
3com net: typhoon: Use net_device_stats from struct net_device 2017-04-07 07:03:33 -07:00
8390 Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
adaptec net: adaptec: starfire: add checks for dma mapping errors 2017-01-29 19:04:11 -05:00
adi net: bfin_mac: Remove unused stats member from struct bfin_mac_local 2017-03-27 16:01:59 -07:00
aeroflex net: greth: Utilize of_get_mac_address() 2017-03-22 12:00:39 -07:00
agere drivers: net: generalize napi_complete_done() 2017-01-30 15:10:42 -05:00
alacritech net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
allwinner
alteon Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
altera drivers: net: generalize napi_complete_done() 2017-01-30 15:10:42 -05:00
amazon net/ena: switch to pci_alloc_irq_vectors 2017-04-11 11:16:03 -04:00
amd net: nmlan_cs: Use net_device_stats from struct net_device 2017-04-07 07:03:33 -07:00
apm drivers: net: xgene-v2: misc fixes 2017-03-22 19:17:14 -07:00
apple
aquantia net:ethernet:aquantia: Reset is_gso flag when EOP reached. 2017-03-24 12:32:19 -07:00
arc drivers: net: generalize napi_complete_done() 2017-01-30 15:10:42 -05:00
atheros net: alx: switch to pci_alloc_irq_vectors 2017-04-11 11:16:02 -04:00
aurora Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2016-12-03 12:29:53 -05:00
broadcom Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-04-06 08:24:51 -07:00
brocade bna: avoid writing uninitialized data into hw registers 2017-03-24 12:49:12 -07:00
cadence net: macb: Use net_device_stats from struct net_device 2017-04-07 07:03:33 -07:00
calxeda drivers: net: generalize napi_complete_done() 2017-01-30 15:10:42 -05:00
cavium net: thunderx: Switch to pci_alloc_irq_vectors 2017-04-11 11:16:03 -04:00
chelsio cxgb4: save tid while creating server filter 2017-04-13 12:37:57 -04:00
cirrus ep93xx_eth: add GRO support 2017-02-05 16:11:57 -05:00
cisco enic: add vxlan offload on tx path 2017-02-09 17:24:29 -05:00
davicom net: davicom: dm9000: use new api ethtool_{get|set}_link_ksettings 2016-12-17 21:31:41 -05:00
dec net: tulip: de2104x: Use net_device_stats from struct net_device 2017-04-07 07:03:33 -07:00
dlink net: dl2k: Use net_device_stats from struct net_device 2017-04-07 07:03:33 -07:00
emulex be2net: Fix endian issue in logical link config command 2017-03-30 15:57:33 -07:00
ezchip Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-04-06 08:24:51 -07:00
faraday ftgmac100: Fix potential ordering issue in NAPI poll 2017-04-18 14:11:09 -04:00
freescale net: fec: add ERR007885 for i.MX6ul enet IP 2017-04-11 14:36:28 -04:00
fujitsu Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
hisilicon Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-04-06 08:24:51 -07:00
hp
i825xx
ibm net: emac: Use net_device_stats from struct net_device 2017-04-07 07:03:33 -07:00
intel ixgbe: Add support for maximum headroom when using build_skb 2017-04-18 13:32:45 -07:00
marvell sky2: Use seq_puts() in sky2_debug_show() 2017-04-18 13:55:11 -04:00
mediatek net-next: ethernet: mediatek: add device_node of GMAC pointing into the netdev instance 2017-04-07 13:50:55 -07:00
mellanox net/mlx5e: E-switch vport manager is valid for ethernet only 2017-04-17 11:08:32 -04:00
micrel net: ks8851: Added support for half-duplex SPI 2017-03-09 18:18:37 -08:00
microchip net: microchip: encx24j600: use new api ethtool_{get|set}_link_ksettings 2017-02-12 22:32:17 -05:00
moxa net: moxa: Use net_device_stats from struct net_device 2017-04-07 07:03:33 -07:00
myricom net: myricom: myri10ge: use new api ethtool_{get|set}_link_ksettings 2017-02-12 22:32:17 -05:00
natsemi net: natsemi: ns83820: use new api ethtool_{get|set}_link_ksettings 2017-02-12 22:32:17 -05:00
neterion net: s2io: fix typo argumnet argument 2017-02-26 11:57:58 -05:00
netronome nfp: don't dereference a null nn->eth_port to print a warning 2017-04-08 08:15:34 -07:00
nuvoton net: nuvoton: Use net_device_stats from struct net_device 2017-04-07 07:03:33 -07:00
nvidia forcedeth: Remove return from a void function 2017-02-23 10:55:07 -05:00
nxp drivers: net: generalize napi_complete_done() 2017-01-30 15:10:42 -05:00
oki-semi net: oki-semi: pch_gbe: use new api ethtool_{get|set}_link_ksettings 2017-02-17 12:00:14 -05:00
packetengines net: hamachi: use new api ethtool_{get|set}_link_ksettings 2017-02-17 14:06:41 -05:00
pasemi drivers: net: generalize napi_complete_done() 2017-01-30 15:10:42 -05:00
qlogic qede: Add aRFS support 2017-04-17 13:06:18 -04:00
qualcomm drivers: add explicit interrupt.h includes 2017-03-30 11:05:34 -07:00
rdc r6040: move spinlock in r6040_close as SOFTIRQ-unsafe lock order detected 2016-12-17 21:35:12 -05:00
realtek r8169: replace init_timer with setup_timer 2017-03-12 23:55:03 -07:00
renesas sh_eth: fix wakeup event reporting from MagicPacket 2017-02-01 12:53:59 -05:00
rocker Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-04-06 08:24:51 -07:00
samsung drivers: net: generalize napi_complete_done() 2017-01-30 15:10:42 -05:00
seeq drivers: net: ethernet: remove incorrect __exit markups 2017-03-02 14:33:49 -08:00
sfc sfc: don't insert mc_list on low-latency firmware if it's too long 2017-04-05 18:35:21 -07:00
sgi net: sgi: ioc3-eth: use new api ethtool_{get|set}_link_ksettings 2017-03-06 17:05:39 -08:00
silan net: silan: sc92031: use new api ethtool_{get|set}_link_ksettings 2017-03-06 17:05:39 -08:00
sis net: sis: sis900: use new api ethtool_{get|set}_link_ksettings 2017-03-06 17:05:39 -08:00
smsc net: smsc: smc91x: use new api ethtool_{get|set}_link_ksettings 2017-03-08 22:18:05 -08:00
stmicro net: stmmac: set total length of the packet to be transmitted in TDES3 2017-04-13 12:40:09 -04:00
sun net: sunhme: Use net_device_stats from struct net_device 2017-04-07 07:03:33 -07:00
synopsys net: dwc-xlgmac: add the initial ethtool support 2017-04-13 13:46:38 -04:00
tehuti net: tehuti: use new api ethtool_{get|set}_link_ksettings 2017-03-27 16:00:07 -07:00
ti Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-04-06 08:24:51 -07:00
tile drivers: net: generalize napi_complete_done() 2017-01-30 15:10:42 -05:00
toshiba net: toshiba: spider_net: use new api ethtool_{get|set}_link_ksettings 2017-03-08 22:18:05 -08:00
tundra net: tundra: tsi108: use new api ethtool_{get|set}_link_ksettings 2017-03-12 19:28:07 -07:00
via net: via: via-velocity: use new api ethtool_{get|set}_link_ksettings 2017-03-12 19:28:07 -07:00
wiznet net: ethernet: wiznet: avoid format string exposure 2017-04-06 13:38:11 -07:00
xilinx net: axienet: use eth_hw_addr_random() 2017-03-06 17:15:41 -08:00
xircom Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
xscale
dnet.c drivers: net: generalize napi_complete_done() 2017-01-30 15:10:42 -05:00
dnet.h
ec_bhf.c net: make ndo_get_stats64 a void function 2017-01-08 17:51:44 -05:00
ethoc.c net: ethoc: Use ether_addr_copy() 2017-03-21 17:16:56 -07:00
fealnx.c net: fealnx: use new api ethtool_{get|set}_link_ksettings 2017-01-02 16:59:10 -05:00
jme.c net: jme: use new api ethtool_{get|set}_link_ksettings 2017-01-17 11:44:27 -05:00
jme.h net: jme: use new api ethtool_{get|set}_link_ksettings 2017-01-17 11:44:27 -05:00
Kconfig net: dwc-xlgmac: Initial driver for DesignWare Enterprise Ethernet 2017-03-09 13:29:27 -08:00
korina.c drivers: net: generalize napi_complete_done() 2017-01-30 15:10:42 -05:00
lantiq_etop.c drivers: net: generalize napi_complete_done() 2017-01-30 15:10:42 -05:00
Makefile net: dwc-xlgmac: Initial driver for DesignWare Enterprise Ethernet 2017-03-09 13:29:27 -08:00
netx-eth.c