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2009-10-28sfc: Set ip_summed correctly for page buffers passed to GROBen Hutchings1-3/+6
Page buffers containing packets with an incorrect checksum or using a protocol not handled by hardware checksum offload were previously not passed to LRO. The conversion to GRO changed this, but did not set the ip_summed value accordingly. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-24cpumask: use zalloc_cpumask_var() where possibleLi Zefan1-2/+1
Remove open-coded zalloc_cpumask_var() and zalloc_cpumask_var_node(). Signed-off-by: Li Zefan <lizf@cn.fujitsu.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
2009-09-02netdev: drivers should make ethtool_ops constStephen Hemminger2-2/+2
No need to put ethtool_ops in data, they should be const. Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-09-01netdev: convert bulk of drivers to netdev_tx_tStephen Hemminger4-14/+15
In a couple of cases collapse some extra code like: int retval = NETDEV_TX_OK; ... return retval; into return NETDEV_TX_OK; Signed-off-by: Stephen Hemminger <shemminger@vyatta.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-26sfc: Improve reliability of RX queue flushingBen Hutchings1-0/+2
Reconfiguring the port requires us to flush all DMA queues. In repeated testing we have found that RX flushes would sometimes fail because the RX DMA engine was not properly isolated from the MACs. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-26sfc: Work around XMAC bug causing packet loss with some peersBen Hutchings1-1/+6
Received frames must be re-clocked by the local XGXS to the 156.25 MHz (DDR) clock of the XGMII. If the remote clock is slightly faster this can reduce a minimum IPG of 64 bit-times (1 cycle) to 32 bit-times (half a cycle). If the XMAC detects that a frame has reached the maximum RX frame length in the same cycle that it receives one of these reduced IPGs, it may miss the IPG, causing two valid frames to be treated as a single invalid frame (over-length with bad CRC). We work around this by increasing the maximum RX frame length so that peers with matched MTU will not provoke this bug. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-26sfc: QT2025C: Use hard reset onlyBen Hutchings1-9/+10
At probe time, falcon_reset_hw() performs a hard reset of the PHY along with Falcon. There is no need to perform a soft reset later, and any access to standard MDIO registers before the PHY firmware has booted can interrupt the boot process, making the port unusable. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-26sfc: Do not reinitialise XAUI serdes before it has completed resetBen Hutchings2-3/+7
falcon_reset_xaui() waits for XGXS reset to complete, but the XAUI serdes reset may take longer. It needs to check both reset active bits. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-26sfc: Fix ordering of device registration and initial netif_carrier_off()Ben Hutchings1-9/+17
We must call netif_carrier_off() after the device is registered, not before, to set the operational state and user-space IFF_RUNNING flag correctly. Since we don't want observers to see an intermediate state, open-code register_netdev() and add efx_update_name() and netif_carrier_off() into the locked region. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-11sfc: Expose 100/1000BASE-T MDI-X status via ethtoolBen Hutchings1-1/+10
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-29net: dont update dev->trans_start in 10GB driversEric Dumazet2-7/+1
Followup of commits 9d21493b4beb8f918ba248032fefa393074a5e2b and 08baf561083bc27a953aa087dd8a664bb2b88e8e (net: tx scalability works : trans_start) (net: txq_trans_update() helper) Now that core network takes care of trans_start updates, dont do it in drivers themselves, if possible. Multi queue drivers can avoid one cache miss (on dev->trans_start) in their start_xmit() handler. Exceptions are NETIF_F_LLTX drivers (vxge & tehuti) Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-19sfc: Remove lro module parameterBen Hutchings1-13/+2
GRO/LRO can be controlled through ethtool so this is unnecessary. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17sfc: Use generic XENPAK register definitionsBen Hutchings3-73/+4
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-17sfc: modify allocation error messageMike Travis1-2/+2
Change error message when alloc_cpumask_var fails. Repairs "cpumask: convert drivers/net/sfc". Signed-off-by: Mike Travis <travis@sgi.com> Acked-by: Ben Hutchings <bhutchings@solarflare.com> Acked-by: David S. Miller <davem@davemloft.net> Cc: Rusty Russell <rusty@rustcorp.com.au> Cc: Ingo Molnar <mingo@elte.hu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-29sfc: Use generic MDIO flow control auto-negotiation functionsBen Hutchings5-48/+7
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-29sfc: Use generic MDIO functions and definitionsBen Hutchings14-845/+311
Make use of the newly-added generic MDIO clause 45 support and remove redundant definitions. Add an 'efx_' prefix to the remaining driver-specific MDIO functions and remove arguments which are redundant with efx->mdio.prtad. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-16Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6David S. Miller2-5/+6
2009-04-16gro: New frags interface to avoid copying shinfoHerbert Xu1-8/+18
It turns out that copying a 16-byte area at ~800k times a second can be really expensive :) This patch redesigns the frags GRO interface to avoid copying that area twice. The two disciples of the frags interface have been converted. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-14sfc: Use correct macro to set event bitfieldBen Hutchings1-2/+2
falcon_sim_phy_event() used EFX_OWORD_FIELD, which operates on bitfields in 128-bit values, on an event, which is a 64-bit value. This should be harmless - these macros always use little-endian ordering, so it would read and write back the following 8 bytes unchanged - but it is obviously wrong. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-14sfc: Match calls to netif_napi_add() and netif_napi_del()Ben Hutchings1-3/+4
sfc could call netif_napi_add() multiple times for the same napi_struct, corrupting the list of napi_structs for the associated device and leading to a busy-loop on device removal. Move the call to netif_napi_add() and add a call to netif_napi_del() in the obvious places. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-08sfc: Don't specify unexistent IRQJean Delvare2-5/+0
Neither the lm90 driver nor the lm87 driver do support interrupts, so there is no point in specifying one when declaring the devices. Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-31sfc: Call netif_napi_add() before registering our interrupt handlerBen Hutchings1-4/+3
If we use a shared legacy IRQ then our interrupt handler may be called as soon as it is registered even though IRQs are disabled on the NIC. Now that the legacy interrupt handler also checks for event delivery, it may decide to schedule polling in this case. Ensure that the NAPI context is valid but disabled at this point. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-27Merge branch 'core/percpu' into percpu-cpumask-x86-for-linus-2Ingo Molnar2-17/+24
Conflicts: arch/parisc/kernel/irq.c arch/x86/include/asm/fixmap_64.h arch/x86/include/asm/setup.h kernel/irq/handle.c Semantic merge: arch/x86/include/asm/fixmap.h Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-03-21sfc: Implement adaptive IRQ moderationBen Hutchings6-21/+73
Calculate a score for each 1000 IRQs: - TX completions are worth 1 point - RX completions are worth 4 if merged using LRO or 2 otherwise Reduce moderation if the score is less than 10000, down to a minimum of 5 us. Increase moderation if the score is more than 20000, up to the specified maximum. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-21sfc: Optimise falcon_writel_page_locked() for page > 0Ben Hutchings1-5/+8
The bug this function works around only applies to the first set of page-mapped registers; other pages can be written without locking. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-21sfc: Remove unused private PCI register definitionsBen Hutchings1-7/+0
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-21sfc: Work around unreliable legacy interrupt statusBen Hutchings1-12/+14
In rare cases, reading the legacy interrupt status register can acknowledge an event queue whose attention flag has not yet been set in the register. Until we service this event queue it will not generate any more interrupts. Therefore, as a secondary check, poll the next slot in each active event queue whose flag is not set. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-21sfc: Pad packets to 33 bytes to prevent TX packet parser lockupBen Hutchings2-0/+10
The packet parser used in the TX data path for locating checksum fields can lose synchronisation with the TX queue manager when handling packets that look like IPv4 but are too short (17-32 bytes). Work around this by padding to 33 bytes. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-04sfc: Improve NIC internal error recoveryBen Hutchings1-4/+19
Make the error count a per-NIC variable. Reset this the count after an hour if it has not reached the critical value. Set the critical value back to 5. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-04sfc: Fix search for flush completion eventsBen Hutchings1-12/+9
When flushing queues we disable normal interrupt and event handling and poll event queue 0 looking for flush completions. Unfortunately the flush event polling loop fails to move past any other type of event. This problem has not been observed in production hardware but appears to be a possibility. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-04sfc: Don't wake TX queues while they're being flushedBen Hutchings1-1/+1
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-04sfc: Clear I2C adapter structure in falcon_remove_nic()Ben Hutchings1-0/+2
i2c_del_adapter() leaves dangling pointers in the structure. If we retry the NIC probe and pass the structure to i2c_add_adapter() again it will lead to an oops unless we clear it first. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-04sfc: Clean up properly on reset failure pathsBen Hutchings1-3/+6
If MAC switching fails, stop the port properly. If PHY reinitialisation fails, clear the port_initialized flag. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-04sfc: Reject packets from the kernel TX queue during a loopback self-testBen Hutchings1-0/+3
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-04sfc: Fix efx_ethtool_nway_result() to use clause 45 MDIO registersBen Hutchings1-1/+8
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-02sfc: Add support for SFN4112F SFP+ reference designBen Hutchings2-0/+63
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-02sfc: Clean up LED controlBen Hutchings3-12/+11
Reinitialise LEDs after overriding them for identification. Rename set_fault_led method to set_id_led since we always use it for NIC identification and not faults. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-02sfc: Delete unused efx_blinker::led_num fieldBen Hutchings2-3/+0
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-02sfc: Add support for QT2025C PHYBen Hutchings4-10/+91
This is a new PHY supporting SFP+ modules, used in the SFN4112F reference design. It is similar to the QT2022C2 and shares much of its support code. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-02sfc: Fix reporting of PHY idBen Hutchings3-7/+22
Shuffle bits of the OUI into the conventional written order. Replace PHY id component macros with functions. Zero-pad PHY id components in log messages. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-02sfc: Remove "XFP" from log messages that are not specific to XFPBen Hutchings1-4/+4
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-02sfc: SFT9001/SFN4111T: Check PHY boot status during board initialisationBen Hutchings3-40/+72
During SFN4111T initialisation, check whether the PHY boot status indicates a bad firmware checksum. If so, prepare to reflash rather than continuing with normal initialisation. Remove redundant PHY boot status check from tenxpress_phy_init(). Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-02sfc: Fix test for MDIO read failureBen Hutchings1-6/+7
Commit 27dd2caca4eabe7c13a052b7456495ba75535e6a changed mdio_clause45_check_mmds() to read both DEVS0 and DEVS1 registers and to combine their values into an unsigned 32-bit mask. This made the following test for a negative (failure) value useless. Fix it to check whether either read failed. Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-03-02sfc: SFT9001: Include non-breaking cable diagnostics in online self-testsBen Hutchings1-21/+24
Signed-off-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-18drivers/net/sfc: fix sparse warnings: Should it be static?Hannes Eder1-0/+1
Impact: Include the header file. If CONFIG_SFC_MTD is not defined then the functions 'efx_mtd_remove' and 'efx_mtd_rename' are defined 'static inline' with an empty function body in the header file, but the the whole file mtd.c is not built in this case. Fix this sparse warnings: drivers/net/sfc/mtd.c:204:6: warning: symbol 'efx_mtd_remove' was not declared. Should it be static? drivers/net/sfc/mtd.c:221:6: warning: symbol 'efx_mtd_rename' was not declared. Should it be static? drivers/net/sfc/mtd.c:230:5: warning: symbol 'efx_mtd_probe' was not declared. Should it be static? Signed-off-by: Hannes Eder <hannes@hanneseder.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-17drivers/net/sfc: fix sparse warning: symbol shadows an earlier oneHannes Eder1-4/+3
Impact: Move variable declaration as close to their usage as possible. Fix this sparse warning: drivers/net/sfc/tenxpress.c:589:22: warning: symbol 'link_ok' shadows an earlier one drivers/net/sfc/tenxpress.c:575:30: originally declared here Signed-off-by: Hannes Eder <hannes@hanneseder.net> Acked-by: Ben Hutchings <bhutchings@solarflare.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-02-13Merge branches 'x86/acpi', 'x86/asm', 'x86/cpudetect', 'x86/crashdump', 'x86/debug', 'x86/defconfig', 'x86/doc', 'x86/header-fixes', 'x86/headers' and 'x86/minor-fixes' into x86/coreIngo Molnar1-12/+12
2009-02-11falcon fix compilation warningsJaswinder Singh Rajput1-12/+12
drivers/net/sfc/falcon.c: In function ‘falcon_alloc_special_buffer’: drivers/net/sfc/falcon.c:340: warning: format ‘%lx’ expects type ‘long unsigned int’, but argument 10 has type ‘phys_addr_t’ drivers/net/sfc/falcon.c: In function ‘falcon_free_special_buffer’: drivers/net/sfc/falcon.c:355: warning: format ‘%lx’ expects type ‘long unsigned int’, but argument 10 has type ‘phys_addr_t’ drivers/net/sfc/falcon.c: In function ‘falcon_probe_port’: drivers/net/sfc/falcon.c:2346: warning: format ‘%lx’ expects type ‘long unsigned int’, but argument 7 has type ‘phys_addr_t’ drivers/net/sfc/falcon.c: In function ‘falcon_probe_nic’: drivers/net/sfc/falcon.c:2924: warning: format ‘%lx’ expects type ‘long unsigned int’, but argument 7 has type ‘phys_addr_t’ Signed-off-by: Jaswinder Singh Rajput <jaswinderrajput@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-05Merge branch 'x86/urgent' into x86/apicIngo Molnar12-302/+279
Conflicts: arch/x86/mach-default/setup.c Semantic merge: arch/x86/kernel/irqinit_32.c Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-02-01net: replace uses of __constant_{endian}Harvey Harrison1-2/+2
Base versions handle constant folding now. Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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