Daniel Hellstrom 0f73f2c5a3 GRETH: resolve SMP issues and other problems ... Fixes the following: 1. POLL should not enable IRQ when work is not completed 2. No locking between TX descriptor cleaning and XMIT descriptor handling 3. No locking between RX POLL and XMIT modifying control register 4. Since TX cleaning (called from POLL) is running in parallel with XMIT unnecessary locking is needed. 5. IRQ handler looks at RX frame status solely, this is wrong when IRQ is temporarily disabled (in POLL), and when IRQ is shared. 6. IRQ handler clears IRQ status, which is unnecessary 7. TX queue was stopped in preventing cause when not MAX_SKB_FRAGS+1 descriptors were available after a SKB been scheduled by XMIT. Instead the TX queue is stopped first when not enough descriptors are available upon entering XMIT. It was hard to split up this patch in smaller pieces since all are tied together somehow. Note the RX flag used in the interrupt handler does not signal that interrupt was asserted, but that a frame was received. Same goes for TX. Also, IRQ is not asserted when the RX flag is set before enabling IRQ enable until a new frame is received. So extra care must be taken to avoid enabling IRQ and all descriptors are already used, hence dead lock will upon us. See new POLL implementation that enableds IRQ then look at the RX flag to determine if one or more IRQs may have been missed. TX/RX flags are cleared before handling previously enabled descriptors, this ensures that the RX/TX flags are valid when determining if IRQ should be turned on again. By moving TX cleaning from POLL to XMIT in the standard case, removes some locking trouble. Enabling TX cleaning from poll only when not enough TX descriptors are available is safe because the TX queue is at the same time stopped, thus XMIT will not be called. The TX queue is woken up again when enough descriptrs are available. TX Frames are always enabled with IRQ, however the TX IRQ Enable flag will not be enabled until XMIT must wait for free descriptors. Locking RX and XMIT parts of the driver from each other is needed because the RX/TX enable bits share the same register. Signed-off-by: Daniel Hellstrom <daniel@gaisler.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2011-01-14 12:45:55 -08:00
..
appletalk
arcnet
arm	ks8695net: Use default implementation of ethtool_ops::get_link	2011-01-13 21:49:55 -08:00
atl1c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-26 22:37:05 -08:00
atl1e	net: Fix drivers advertising HW_CSUM feature to use csum_start	2010-12-16 14:43:15 -08:00
atlx	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2011-01-04 11:57:25 -08:00
benet	drivers/net/*/: Use static const	2010-12-21 02:16:10 -08:00
bna	bna: Remove unnecessary memset(,0,)	2011-01-12 19:00:39 -08:00
bnx2x	bnx2x: Fix the race on bp->stats_pending.	2011-01-09 15:47:47 -08:00
bonding	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-17 12:27:22 -08:00
caif	Merge branch 'ux500-core' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-stericsson into devel-stable	2011-01-03 10:31:58 +00:00
can	pch_can: Fix array miss-pointing issue	2010-12-22 15:25:40 -08:00
chelsio	Merge branch 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq	2011-01-07 16:58:04 -08:00
cris
cxgb3	drivers/net/*/: Use static const	2010-12-21 02:16:10 -08:00
cxgb4	cxgb4: NUMA-aware Tx queue allocations	2010-12-16 13:16:04 -08:00
cxgb4vf	cxgb4vf: recover from failure in cxgb4vf_open()	2011-01-11 15:44:40 -08:00
e1000	e1000: Avoid unhandled IRQ	2011-01-14 02:00:46 -08:00
e1000e	e1000e: consistent use of Rx/Tx vs. RX/TX/rx/tx in comments/logs	2011-01-14 02:06:23 -08:00
ehea	ehea: Increase the skb array usage	2011-01-11 14:03:09 -08:00
enic	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-17 12:27:22 -08:00
fs_enet
hamradio	hamradio: Resolve memory leak due to missing firmware release in add_mcs()	2011-01-09 15:45:48 -08:00
ibm_newemac	Merge branch 'for-2.6.38' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/wq	2011-01-07 16:58:04 -08:00
igb	igb: Add Anti-spoofing feature support	2010-12-24 21:36:51 -08:00
igbvf	igbvf: add support for i350 VF device	2010-12-24 21:38:47 -08:00
irda	smsc-ircc2: Fix section mismatch derived from smsc_ircc_pnp_probe()	2011-01-03 13:27:38 -08:00
ixgb	net: Fix drivers advertising HW_CSUM feature to use csum_start	2010-12-16 14:43:15 -08:00
ixgbe	net: remove dev_txq_stats_fold()	2011-01-13 21:44:34 -08:00
ixgbevf	ixgbevf: Add X540 VF device support to the ixgbevf driver	2010-12-24 21:45:42 -08:00
ixp2000
mlx4	mlx4: Call alloc_etherdev to allocate RX and TX queues	2011-01-10 16:05:31 -08:00
myri10ge	net: Fix drivers advertising HW_CSUM feature to use csum_start	2010-12-16 14:43:15 -08:00
netxen	netxen: update driver version 4.0.75	2011-01-03 11:56:18 -08:00
octeon
pch_gbe
pcmcia	pcnet_cs: add new_id	2011-01-11 14:03:08 -08:00
phy	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-17 12:27:22 -08:00
qlcnic	qlcnic: change module parameter permissions	2011-01-10 13:34:55 -08:00
qlge	drivers/net/*/: Use static const	2010-12-21 02:16:10 -08:00
sfc	sfc: Restore the effect of the rss_cpus module parameter	2011-01-13 22:09:17 +00:00
skfp	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2011-01-04 11:57:25 -08:00
stmmac	stmmac: unwind properly in stmmac_dvr_probe()	2010-12-21 10:53:19 -08:00
tile	netdev: tilepro: Use is_unicast_ether_addr helper	2011-01-13 21:49:56 -08:00
tokenring	drivers/net/*/: Use static const	2010-12-21 02:16:10 -08:00
tulip	drivers/net/*/: Use static const	2010-12-21 02:16:10 -08:00
usb	USB CDC NCM: Don't deref NULL in cdc_ncm_rx_fixup() and don't use uninitialized variable.	2011-01-13 21:48:26 -08:00
vmxnet3	drivers/net/*/: Use static const	2010-12-21 02:16:10 -08:00
vxge	vxge: Remember to release firmware after upgrading firmware	2011-01-13 21:48:26 -08:00
wan	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-26 22:37:05 -08:00
wimax	Merge branch 'usb-next' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6	2011-01-07 13:16:28 -08:00
wireless	hostap_cs: fix sleeping function called from invalid context	2011-01-10 15:40:53 -05:00
3c59x.c
3c501.c	drivers/net/*.c: Use static const	2010-12-21 02:16:08 -08:00
3c501.h
3c503.c	drivers/net/*.c: Use static const	2010-12-21 02:16:08 -08:00
3c503.h
3c505.c
3c505.h
3c507.c	drivers/net/*.c: Use static const	2010-12-21 02:16:08 -08:00
3c509.c
3c515.c
3c523.c
3c523.h
3c527.c	drivers/net/*.c: Use static const	2010-12-21 02:16:08 -08:00
3c527.h
7990.c
7990.h
8139cp.c
8139too.c
8390.c
8390.h
8390p.c
82596.c
a2065.c
a2065.h
ac3200.c
acenic.c
acenic.h
amd8111e.c
amd8111e.h
apne.c
ariadne.c
ariadne.h
at1700.c	drivers/net/*.c: Use static const	2010-12-21 02:16:08 -08:00
atarilance.c
atp.c
atp.h
au1000_eth.c
au1000_eth.h
ax88796.c
b44.c
b44.h
bcm63xx_enet.c
bcm63xx_enet.h
bfin_mac.c	netdev: bfin_mac: Remove is_multicast_ether_addr use in netdev_for_each_mc_addr	2011-01-13 21:48:25 -08:00
bfin_mac.h	netdev: bfin_mac: let boards set vlan masks	2011-01-10 13:31:14 -08:00
bmac.c
bmac.h
bnx2_fw.h
bnx2.c	bnx2: Update firmware and version	2010-12-31 11:04:02 -08:00
bnx2.h
bsd_comp.c
cassini.c	cassini: Fix build bustage on x86.	2011-01-14 12:39:59 -08:00
cassini.h	cassini: Use local-mac-address prom property for Cassini MAC address	2011-01-06 11:50:30 -08:00
cnic_defs.h	cnic: Add FCoE support on 57712	2010-12-23 11:44:34 -08:00
cnic_if.h	cnic: Do not call bnx2i when bnx2i is calling cnic_unregister_driver()	2011-01-03 19:08:07 -08:00
cnic.c	cnic: Fix the type field in SPQ messages	2011-01-06 11:27:22 -08:00
cnic.h	cnic: Add FCoE support on 57712	2010-12-23 11:44:34 -08:00
cpmac.c
cs89x0.c
cs89x0.h
davinci_cpdma.c
davinci_cpdma.h
davinci_emac.c
davinci_mdio.c
de600.c
de600.h
de620.c
de620.h
declance.c
defxx.c
defxx.h
depca.c	depca: Fix section mismatch derived from depca_isa_probe()	2011-01-03 13:27:38 -08:00
depca.h
dl2k.c
dl2k.h
dm9000.c
dm9000.h
dnet.c
dnet.h
dummy.c
e100.c
e2100.c	drivers/net/*.c: Use static const	2010-12-21 02:16:08 -08:00
eepro.c	drivers/net/*.c: Use static const	2010-12-21 02:16:08 -08:00
eexpress.c	drivers/net/*.c: Use static const	2010-12-21 02:16:08 -08:00
eexpress.h
enc28j60_hw.h
enc28j60.c
epic100.c	epic100: hamachi: yellowfin: Fix skb allocation size	2010-12-25 19:37:49 -08:00
eql.c
es3210.c
eth16i.c
ethoc.c
ewrk3.c
ewrk3.h
fealnx.c
fec_mpc52xx_phy.c
fec_mpc52xx.c
fec_mpc52xx.h
fec.c	net/fec: add dual fec support for mx28	2011-01-09 15:42:56 -08:00
fec.h	net/fec: add dual fec support for mx28	2011-01-09 15:42:56 -08:00
forcedeth.c	forcedeth: Do not use legacy PCI power management	2011-01-09 16:20:29 -08:00
fsl_pq_mdio.c
fsl_pq_mdio.h
gianfar_ethtool.c
gianfar_sysfs.c
gianfar.c	net: remove dev_txq_stats_fold()	2011-01-13 21:44:34 -08:00
gianfar.h	net: remove dev_txq_stats_fold()	2011-01-13 21:44:34 -08:00
greth.c	GRETH: resolve SMP issues and other problems	2011-01-14 12:45:55 -08:00
greth.h	GRETH: handle frame error interrupts	2011-01-14 12:45:54 -08:00
hamachi.c	epic100: hamachi: yellowfin: Fix skb allocation size	2010-12-25 19:37:49 -08:00
hp100.c
hp100.h
hp-plus.c
hp.c	drivers/net/*.c: Use static const	2010-12-21 02:16:08 -08:00
hplance.c
hplance.h
hydra.c
ibmlana.c
ibmlana.h
ibmveth.c
ibmveth.h
ifb.c	ifb: add performance flags	2011-01-03 12:43:10 -08:00
ioc3-eth.c
ipg.c
ipg.h
iseries_veth.c
jazzsonic.c
jme.c	drivers/net/*.c: Use static const	2010-12-21 02:16:08 -08:00
jme.h
Kconfig	net/fec: remove config FEC2 as it's used nowhere	2011-01-11 14:03:08 -08:00
korina.c
ks8842.c
ks8851_mll.c
ks8851.c
ks8851.h
ksz884x.c	ksz884x: Fix section mismatch derived from pcidev_init()	2011-01-03 13:27:37 -08:00
lance.c
lasi_82596.c
lib8390.c
lib82596.c
LICENSE.SRC
ll_temac_main.c	ll_temac: Fix section mismatch from the temac_of_probe	2011-01-03 12:07:39 -08:00
ll_temac_mdio.c
ll_temac.h
lne390.c
loopback.c
lp486e.c
mac89x0.c
mac8390.c
macb.c
macb.h
mace.c
mace.h
macmace.c
macsonic.c
macvlan.c
macvtap.c	net: remove dev_txq_stats_fold()	2011-01-13 21:44:34 -08:00
Makefile
mdio.c
meth.c
meth.h
mii.c
mipsnet.c
mv643xx_eth.c
mvme147.c
myri_sbus.c
myri_sbus.h
natsemi.c
ne2.c
ne2k-pci.c
ne3210.c
ne-h8300.c
ne.c
netconsole.c	netconsole: clarify stopping message	2011-01-06 11:30:23 -08:00
netx-eth.c
ni52.c	drivers/net/*.c: Use static const	2010-12-21 02:16:08 -08:00
ni52.h
ni65.c	drivers/net/*.c: Use static const	2010-12-21 02:16:08 -08:00
ni65.h
ni5010.c
ni5010.h
niu.c	net: Fix drivers advertising HW_CSUM feature to use csum_start	2010-12-16 14:43:15 -08:00
niu.h
ns83820.c
pasemi_mac_ethtool.c
pasemi_mac.c
pasemi_mac.h
pci-skeleton.c
pcnet32.c
plip.c
ppp_async.c	net: ppp: use {get,put}_unaligned_be{16,32}	2011-01-10 16:13:33 -08:00
ppp_deflate.c	net: ppp: use {get,put}_unaligned_be{16,32}	2011-01-10 16:13:33 -08:00
ppp_generic.c	net: ppp: use {get,put}_unaligned_be{16,32}	2011-01-10 16:13:33 -08:00
ppp_mppe.c	net: ppp: use {get,put}_unaligned_be{16,32}	2011-01-10 16:13:33 -08:00
ppp_mppe.h
ppp_synctty.c	net: ppp: use {get,put}_unaligned_be{16,32}	2011-01-10 16:13:33 -08:00
pppoe.c
pppox.c
pptp.c
ps3_gelic_net.c
ps3_gelic_net.h
ps3_gelic_wireless.c
ps3_gelic_wireless.h
pxa168_eth.c
qla3xxx.c
qla3xxx.h
r6040.c	net: r6040: Return proper error for r6040_init_one	2011-01-06 11:18:07 -08:00
r8169.c	r8169: keep firmware in memory.	2011-01-13 21:49:57 -08:00
rionet.c
rrunner.c
rrunner.h
s2io-regs.h
s2io.c
s2io.h
s6gmac.c
sb1000.c
sb1250-mac.c
sc92031.c
seeq8005.c
seeq8005.h
sgiseeq.c
sgiseeq.h
sh_eth.c
sh_eth.h
sis190.c
sis900.c
sis900.h
skge.c	skge: Do not use legacy PCI power management	2010-12-31 12:50:18 -08:00
skge.h
sky2.c	sky2: convert to new VLAN model (v0.2)	2011-01-09 15:54:15 -08:00
sky2.h	sky2: convert to new VLAN model (v0.2)	2011-01-09 15:54:15 -08:00
slhc.c
slip.c
slip.h
smc91x.c
smc91x.h
smc911x.c
smc911x.h
smc9194.c
smc9194.h
smc-mca.c
smc-ultra32.c
smc-ultra.c	drivers/net/*.c: Use static const	2010-12-21 02:16:08 -08:00
smsc911x.c
smsc911x.h
smsc9420.c
smsc9420.h
sni_82596.c
sonic.c
sonic.h
Space.c	net/Space: delete orphaned externs from deleted drivers	2011-01-03 11:06:35 -08:00
spider_net_ethtool.c
spider_net.c
spider_net.h
starfire.c	starfire: Fix dma_addr_t size test for MIPS	2010-12-31 12:33:17 -08:00
stnic.c
sun3_82586.c
sun3_82586.h
sun3lance.c
sunbmac.c
sunbmac.h
sundance.c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2010-12-26 22:37:05 -08:00
sungem_phy.c
sungem_phy.h
sungem.c	net: Fix drivers advertising HW_CSUM feature to use csum_start	2010-12-16 14:43:15 -08:00
sungem.h
sunhme.c	net: Fix drivers advertising HW_CSUM feature to use csum_start	2010-12-16 14:43:15 -08:00
sunhme.h
sunlance.c
sunqe.c
sunqe.h
sunvnet.c
sunvnet.h
tc35815.c
tehuti.c	tehuti: Firmware filename is tehuti/bdx.bin	2010-12-17 10:17:12 -08:00
tehuti.h
tg3.c	Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6	2011-01-04 11:57:25 -08:00
tg3.h
tlan.c
tlan.h
tsi108_eth.c
tsi108_eth.h
tun.c	net: Use skb_checksum_start_offset()	2010-12-16 14:43:14 -08:00
typhoon.c	typhoon: memory corruption in typhoon_get_drvinfo()	2010-12-20 10:43:02 -08:00
typhoon.h
ucc_geth_ethtool.c
ucc_geth.c	netdev: ucc_geth: Use is_multicast_ether_addr helper	2011-01-12 18:46:11 -08:00
ucc_geth.h
veth.c	net/veth: Fix packet checksumming	2010-12-16 14:41:35 -08:00
via-rhine.c
via-velocity.c
via-velocity.h
virtio_net.c	net: Use skb_checksum_start_offset()	2010-12-16 14:43:14 -08:00
wd.c	drivers/net/*.c: Use static const	2010-12-21 02:16:08 -08:00
xen-netfront.c	net offloading: Pass features into netif_needs_gso().	2011-01-09 23:35:34 -08:00
xilinx_emaclite.c
xtsonic.c
yellowfin.c	epic100: hamachi: yellowfin: Fix skb allocation size	2010-12-25 19:37:49 -08:00
znet.c
zorro8390.c