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path: root/drivers/net/vxge
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2009-08-06vxge: Version updateBenjamin LaHaise1-2/+2
Update the driver version number for any bug reports from end users. Signed-off-by: Benjamin LaHaise <ben.lahaise@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-06vxge: prefetch skb->dataBenjamin LaHaise2-1/+6
This patch implements prefetching of skb->data from a copy of the pointer in the descriptor (which is already in the L1 cache at this point). This improves netperf rx performance (netperf -L 0,0 -c -H 192.168.254.2 -- -M 131072 -m 131072) by 4.9% on a P4 Xeon host. Signed-off-by: Benjamin LaHaise <ben.lahaise@neterion.com> Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-06vxge: prefetch RxD descriptorsBenjamin LaHaise2-0/+2
This patch prefetches RxD descriptors which helps to lower the latency of a cache miss in vxge_hw_ring_rxd_next_completed. This lowers the % of CPU time used by vxge_hw_ring_rxd_next_completed() where the descriptor is accessed in profiling netperf on a P4 Xeon from 1.5% to 1.0%. Signed-off-by: Benjamin LaHaise <ben.lahaise@neterion.com> Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-06vxge: improve tx performance by using mmiowb() instead of wmb()Benjamin LaHaise1-2/+2
wmb() is extremely heavy on x86. The semantics required in the driver are provided by mmiowb(), so use that and improve tx performance on P4 Xeons by 5-10%. Signed-off-by: Benjamin LaHaise <ben.lahaise@neterion.com> Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-06vxge: fix pktgen hangs (don't abuse skb->cb[])Benjamin LaHaise5-32/+40
This patch fixes a case in the transmit completion code which was resulting in pktgen hanging at the end of a run. The cause is due to the fact that the ->cb[] area of an skb cannot be used in a network driver's transmit path, as that area belongs to the network protocol. Pktgen hangs, as it sends out the same packet multiple times, and vxge's use of this area of the skb for a temporary list can only add the packet to the temporary list once (while it may be on the queue many times). The fix is to remove this abuse of skb->cb[]. Instead, skb pointers are placed into a temporary stack array, and then free outside of the tx lock. This retains the smp optimization of doing dev_kfree_skb() outside of the tx lock. Signed-off-by: Benjamin LaHaise <ben.lahaise@neterion.com> Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-06vxge: don't drop frame on tx queue fullBenjamin LaHaise1-0/+6
The vxge driver will drop a packet in its transmit function if the number of TxDs available hits 0. Instead of doing that, simply stop the transmit queue when transmitting a packet with the last available TxD. Signed-off-by: Benjamin LaHaise <ben.lahaise@neterion.com> Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-08-02vxge: return PCI_ERS_RESULT_DISCONNECT on permanent failureDean Nelson1-0/+3
PCI drivers that implement the struct pci_error_handlers' error_detected callback should return PCI_ERS_RESULT_DISCONNECT if the state passed in is pci_channel_io_perm_failure. This patch fixes the issue for vxge. Signed-off-by: Dean Nelson <dnelson@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-06vxge: Version updateSreenivasa Honnur1-1/+1
- Version update Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-06vxge: Printing the function's configured mode of operationSreenivasa Honnur1-0/+21
- Printing the function's configured mode of operation. Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-06vxge: Disable fcs stripping.Sreenivasa Honnur2-5/+7
- Disable fcs stripping. The minimum frame size that can be received by the hardware is 57 Bytes. A 64 Byte Ethernet frame with the vlan tag and fcs stripped will result in a 56 Byte frame which will lock up the receive engine. The work around is to disable fcs stripping in the hardware which is done with a firmware upgrade. The fixes are - 1. Ensure that the correct firmware version is used. 2. Decrement the indicated packet length of the receive packet by 4 bytes (FCS length). Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-06vxge: Fixes in isr routineSreenivasa Honnur2-10/+13
- Fixes in isr routine Fixed crash with INTA mode during driver unload. Pass hldev to request_irq instead of vdev. Fixed Traffic failure with GRO in INTA mode. Pass the correct napi context to gro functions. Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-06vxge: Removed the code to bounds check the mss valueSreenivasa Honnur2-7/+0
- Removed the code to bounds check the mss value. The hardware does bounds checking and will not allow an oversized mss to lockup the transmit path. Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-06vxge: Corrected Register map entry for xmac_link registersSreenivasa Honnur1-3/+6
- Corrected Register map entry for xmac_link registers. Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-06vxge: check for card status before continuing in device closeSreenivasa Honnur1-0/+3
- Fixed the crash in rmmod after vpath open failed when trying to change mtu. We should check for card status before continuing in device close. Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-06vxge: Fixed memory leak by freeing memory allocated for device_configSreenivasa Honnur1-0/+1
- Fixed memory leak by freeing memory allocated for device_config. Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-06vxge: Removed ioremap of unused bar addresses and their referencesSreenivasa Honnur4-45/+10
- Removed ioremap of bar1 address Driver needs only bar0 address for register access - Removed references to bar1 and bar2 addresses Signed-off-by: Sreenivasa Honnur <sreenivasa.honnur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-07-06net: use NETDEV_TX_OK instead of 0 in ndo_start_xmit() functionsPatrick McHardy1-2/+2
This patch is the result of an automatic spatch transformation to convert all ndo_start_xmit() return values of 0 to NETDEV_TX_OK. Some occurences are missed by the automatic conversion, those will be handled in a seperate patch. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-17vxge: Enable SRIOV support in the driver.Sivakumar Subramani3-7/+22
- Enabled SRIOV support in the driver. - Call __vxge_hw_verify_pci_e_info() for the PF only. This function verifies the negotiated link width and current link speed in the Link Status Register (offset 12h) which are reserved fields for VFs as per the SRIOV specification, section 3.5.8. - Implemented David Miller's comment to remove the #ifdef CONFIG_PCI_IOV as these intefaces have NOP versions declared when the defintion is not set. Signed-off-by: Sivakumar Subramani <sivakumar.subramani@neterion.com> Signed-off-by: Rastapur Santosh <santosh.rastapur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-06-11vxge: No need for check vfree() pointer.Figo.zhang1-8/+4
vfree() does its own 'NULL' check, so no need for check before calling it. Signed-off-by: Figo.zhang <figo1802@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-05-29net: dont update dev->trans_start in 10GB driversEric Dumazet1-2/+4
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>
2009-05-19Merge branch 'master' of ↵David S. Miller1-1/+1
master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6 Conflicts: drivers/scsi/fcoe/fcoe.c
2009-05-18Neterion: *FIFO1_DMA_ERR set twice, should 2nd be *FIFO2_DMA_ERR?roel kluin1-1/+1
FIFO1_DMA_ERR is set twice, the second should be FIFO2_DMA_ERR. Signed-off-by: Roel Kluin <roel.kluin@gmail.com> Acked-by: Ram Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-30Revert "vxge: use max() instead of VXGE_HW_SET_LEVEL"David S. Miller2-23/+34
This reverts commit 011983048a120e520147361be1067dd82343038e. Causes warnings in the build as reported by Stephen Rothwell. So this change is worse than what it's curing. Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-27vxge: use max() instead of VXGE_HW_SET_LEVELAlexander Beregalov2-34/+23
Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Acked-by: Ram Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-27vxge: fix possible NULL dereference in vxge-traffic.cAlexander Beregalov1-2/+2
If vpath is NULL then hldev is NULL also. Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Acked-by: Ram Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-05vxge: should include tcp.hAlexander Beregalov1-0/+1
Fix this build error: drivers/net/vxge/vxge-main.c: In function 'vxge_get_vpath_no': drivers/net/vxge/vxge-main.c:695: error: dereferencing pointer to incomplete type ... Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-02Neterion: New driver: Kconfig and MakefileRamkrishna Vepa1-0/+7
- Kconfig and Makefile related changes for vxge driver. - No changes in current submission. - Changes from previous submission - - Incorporated the following review comments as per Bill Flink: - Add dependancy on INET along with PCI - Remove dependancy on INET_LRO and add GRO support. - Made this patch as last patch as per Ben Hutchings comments. Signed-off-by: Sivakumar Subramani <sivakumar.subramani@neterion.com> Signed-off-by: Rastapur Santosh <santosh.rastapur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-02Neterion: New driver: Driver versionRamkrishna Vepa1-0/+23
- Driver version - Changes from previous submission - - Updated driver version. Signed-off-by: Sivakumar Subramani <sivakumar.subramani@neterion.com> Signed-off-by: Rastapur Santosh <santosh.rastapur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-02Neterion: New driver: Ethtool relatedRamkrishna Vepa2-0/+1215
This patch implements all ethtool related entry point functions for the driver. - Changes in this submission - - Removed redundant #include statements - Changes in previous submissions - - Removed unused statistics. - General clean up - removed unused variables and macros. - Incorporated following comments from Ben Hutchings - No need to restart the interface in vxge_ethtool_sset - Do not use #ifdef ADVERTISED_XX - Remove unnecessart intermediate copy in vxge_ethtool_gdrvinfo - Use strlcpy() to ensure null-termination. - Use ethtool_op_get_tso, ethtool_op_set_tx_hw_csum instead of redefining the same code. - Implement get_strings_count instead of deprecated get_stats_count. - Don't report reporting the EEPROM length as we don't supprt get/set eeprom. - Don't set self_test_count as we don't support any self tests. Signed-off-by: Sivakumar Subramani <sivakumar.subramani@neterion.com> Signed-off-by: Rastapur Santosh <santosh.rastapur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-02Neterion: New driver: Main entry pointsRamkrishna Vepa2-0/+5059
This patch implements all the driver entry point functions. - Definition of all module loadable paramters. - Implementation of all driver entry point functions. - Changes in this submission - - Fixed compilation error when enabling debug statements - Fixed few warnings when CONFIG_PCI_MSI is not defined - Removed unnecessary volatile variables - Removed compare_ether_addr as it causes unaligned memory access on the sparc64 platform. - Changes in previous submissions - - As per Stephen Hemminger's comments removed the following loadable parameters - gro, rx_& tx max_indicate_pkts, exec_mode, rx & tx pause_enable, tx_steering_type and intr_type. - Added Device ID definition in vxge-main.h instead of include/linux/pci_ids.h file - Reported by David Miller - Incorporated following review comments from Ben Hutchings - NAPI is always enabled (no option to turn it OFF). - Loadable parameters rx_steering_type: This loadable option is removed. ring_blocks: This loadable option is removed. The driver default settings work well in most if not all cases. Another patch to configure these parameters with ethtool will be released in the future. - LRO has been deprecated in favour of GRO - Bill Fink & Dave Miller's comment - Fixed sparse warnings - Reported by Andi Kleen - Removed unused variables Signed-off-by: Sivakumar Subramani <sivakumar.subramani@neterion.com> Signed-off-by: Rastapur Santosh <santosh.rastapur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-02Neterion: New driver: Traffic & alarm handlerRamkrishna Vepa2-0/+4937
This patch takes care of trafic handling related APIS. - Interrupt Enable and disable - Mask / Unmask Interrupt - Traffic Interrupt handling. - Alarm Interrupt handling. - Changes in this submission - - General clean up - removed redundant includes, defines and macros. - Changes in previous submissions - - General cleanup - removed unused functions and variables. - Use asserts where necessary - Reported by Andi Kleen - Fixed sparse warnings - Reported by Andi Kleen - Use a prefix, "__vxge" in front of hw functions to make them globally unique - Ben Hutchings Signed-off-by: Sivakumar Subramani <sivakumar.subramani@neterion.com> Signed-off-by: Rastapur Santosh <santosh.rastapur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-02Neterion: New driver: Hardware init & configurationRamkrishna Vepa2-0/+7523
This patch takes care of Initialization and configuration steps of Neterion Inc's X3100 Series 10GbE PCIe I/O Virtualized Server Adapter. - Device Initialization. - Verification and setting of device config parameters. - Allocation of Tx FIFO and Rx Ring descriptors (DTR). - APIs to get various type of hw stats - APIs to configure RTS (Receive Traffic Steering) - Changes in this submission - - Include vmalloc header without which a compilation error occured on sparc64, ppc64 and IA64 plaforms. - Fixed compilation warning in register_poll, write32_upper, write32_lower and the special write64 functions on ppc64. - General cleanup - removed redundant includes and defines. - Changes in previous submissions - - Add readq/writeq implementation for the driver for 32 bit systems - reported by Dave Miller. - Incorporated following comments from Ben Hutchings - Start a comment with "/**" to make it a kernel-doc comment. - Use prefix, "__vxge" in front of hw functions to make them globally unique. - Fixed unnecessary clearing members of *channel just before freeing - Use backslashes only for macro definitions and not in multi-line statements. - Used pci_find_capability instead of redefining it. - Used device and revision ids that are already in pdev - no need to read them again. - Used pci_save_state() and pci_restore_state() around resets. - Used udelay and mdelay directly instead of wrapper. - In __vxge_hw_device_register_poll() reset i to 0 after the microsecond delay loop to commence the millisecond delay loop. - Corrected spelling "sapper" - should be "swapper" - Remove too much vertical whitespace. - Replaced magic numbers with appropriate macros - Incorporated following comments from Andi Kleen [andi@firstfloor.org] - Reduced the arguments in functions or refactored them into smaller functions. - Allocate page sized memories used in slow path with vmalloc. - Use asserts where necessary. - Use macros instead of magic numbers. - Use the pci layer code instead of defining own functions - Remove driver wrappers such as xge_hw_device_private_set(). - Fixed sparse warnings. Signed-off-by: Sivakumar Subramani <sivakumar.subramani@neterion.com> Signed-off-by: Rastapur Santosh <santosh.rastapur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2009-04-02Neterion: New driver: register set - vxge-reg.hRamkrishna Vepa1-0/+4608
- Complete Register map details of Neterion Inc's X3100 Series 10GbE PCIe I/O Virtualized Server Adapter. - No change from previous submission. - Changes in previous submissions - - Incorporated following comments from Ben Hutchings - Use original macros for endian checks - Remove VXGE_OS_PLATFORM_* macros as they are unused. - Converted multiple bVALX macros into single with additional width parameter and renamed it to vxge_bVALn. - Using __packed instead of pragma pack(1) - Added a comment of the use of a hw swapper so driver code is portable (does not have to change the byte order for register access as well as dma operations) on different ENDIAN platforms. - Using the <linux/pci_regs.h> definitions instead of redefing them. - Using the PCI capabilities registers in <linux/pci_regs.h> instead of redefing them. Signed-off-by: Sivakumar Subramani <sivakumar.subramani@neterion.com> Signed-off-by: Rastapur Santosh <santosh.rastapur@neterion.com> Signed-off-by: Ramkrishna Vepa <ram.vepa@neterion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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