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* ixgb: don't print error if pci_enable_msi() fails, cleanup minor leakAuke Kok2007-05-17
| | | | | | | | | | pci_enable_msi calls can fail for normal operational reasons. Driver should not print an error message in that case. Fix a leak that leaves msi enabled if pci_request_irq fails. We can remove CONFIG_PCI_MSI ifdefs alltogether Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* Fix occurrences of "the the "Michael Opdenacker2007-05-09
| | | | | Signed-off-by: Michael Opdenacker <michael@free-electrons.com> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* PCI: Cleanup the includes of <linux/pci.h>Jean Delvare2007-05-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I noticed that many source files include <linux/pci.h> while they do not appear to need it. Here is an attempt to clean it all up. In order to find all possibly affected files, I searched for all files including <linux/pci.h> but without any other occurence of "pci" or "PCI". I removed the include statement from all of these, then I compiled an allmodconfig kernel on both i386 and x86_64 and fixed the false positives manually. My tests covered 66% of the affected files, so there could be false positives remaining. Untested files are: arch/alpha/kernel/err_common.c arch/alpha/kernel/err_ev6.c arch/alpha/kernel/err_ev7.c arch/ia64/sn/kernel/huberror.c arch/ia64/sn/kernel/xpnet.c arch/m68knommu/kernel/dma.c arch/mips/lib/iomap.c arch/powerpc/platforms/pseries/ras.c arch/ppc/8260_io/enet.c arch/ppc/8260_io/fcc_enet.c arch/ppc/8xx_io/enet.c arch/ppc/syslib/ppc4xx_sgdma.c arch/sh64/mach-cayman/iomap.c arch/xtensa/kernel/xtensa_ksyms.c arch/xtensa/platform-iss/setup.c drivers/i2c/busses/i2c-at91.c drivers/i2c/busses/i2c-mpc.c drivers/media/video/saa711x.c drivers/misc/hdpuftrs/hdpu_cpustate.c drivers/misc/hdpuftrs/hdpu_nexus.c drivers/net/au1000_eth.c drivers/net/fec_8xx/fec_main.c drivers/net/fec_8xx/fec_mii.c drivers/net/fs_enet/fs_enet-main.c drivers/net/fs_enet/mac-fcc.c drivers/net/fs_enet/mac-fec.c drivers/net/fs_enet/mac-scc.c drivers/net/fs_enet/mii-bitbang.c drivers/net/fs_enet/mii-fec.c drivers/net/ibm_emac/ibm_emac_core.c drivers/net/lasi_82596.c drivers/parisc/hppb.c drivers/sbus/sbus.c drivers/video/g364fb.c drivers/video/platinumfb.c drivers/video/stifb.c drivers/video/valkyriefb.c include/asm-arm/arch-ixp4xx/dma.h sound/oss/au1550_ac97.c I would welcome test reports for these files. I am fine with removing the untested files from the patch if the general opinion is that these changes aren't safe. The tested part would still be nice to have. Note that this patch depends on another header fixup patch I submitted to LKML yesterday: [PATCH] scatterlist.h needs types.h http://lkml.org/lkml/2007/3/01/141 Signed-off-by: Jean Delvare <khali@linux-fr.org> Cc: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* ixgb: ROUND_UP macro cleanup in drivers/net/ixgbMilind Arun Choudhary2007-04-28
| | | | | | | | IXGB_ROUNDUP macro cleanup ,use ALIGN Signed-off-by: Milind Arun Choudhary <milindchoudhary@gmail.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* ixgb: Use ARRAY_SIZE macro when appropriate.Ahmed S. Darwish2007-04-28
| | | | | | Signed-off-by: Ahmed S. Darwish <darwish.07@gmail.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [SK_BUFF]: Introduce skb_copy_to_linear_data{_offset}Arnaldo Carvalho de Melo2007-04-26
| | | | | | | To clearly state the intent of copying to linear sk_buffs, _offset being a overly long variant but interesting for the sake of saving some bytes. Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
* [SK_BUFF]: Introduce tcp_hdr(), remove skb->h.thArnaldo Carvalho de Melo2007-04-26
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [TCP]: Introduce tcp_hdrlen() and tcp_optlen()Arnaldo Carvalho de Melo2007-04-26
| | | | | | | | | | | | The ip_hdrlen() buddy, created to reduce the number of skb->h.th-> uses and to avoid the longer, open coded equivalent. Ditched a no-op in bnx2 in the process. I wonder if we should have a BUG_ON(skb->h.th->doff < 5) in tcp_optlen()... Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SK_BUFF]: Introduce skb_transport_offset()Arnaldo Carvalho de Melo2007-04-26
| | | | | | | For the quite common 'skb->h.raw - skb->data' sequence. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iphArnaldo Carvalho de Melo2007-04-26
| | | | | Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [SK_BUFF]: Introduce skb_network_offset()Arnaldo Carvalho de Melo2007-04-26
| | | | | | | For the quite common 'skb->nh.raw - skb->data' sequence. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* [VLAN]: Avoid a 4-order allocation.Dan Aloni2007-03-02
| | | | | | | | | | | | | | This patch splits the vlan_group struct into a multi-allocated struct. On x86_64, the size of the original struct is a little more than 32KB, causing a 4-order allocation, which is prune to problems caused by buddy-system external fragmentation conditions. I couldn't just use vmalloc() because vfree() cannot be called in the softirq context of the RCU callback. Signed-off-by: Dan Aloni <da-x@monatomic.org> Acked-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6Linus Torvalds2007-02-07
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * master.kernel.org:/pub/scm/linux/kernel/git/gregkh/pci-2.6: (41 commits) Revert "PCI: remove duplicate device id from ata_piix" msi: Make MSI useable more architectures msi: Kill the msi_desc array. msi: Remove attach_msi_entry. msi: Fix msi_remove_pci_irq_vectors. msi: Remove msi_lock. msi: Kill msi_lookup_irq MSI: Combine pci_(save|restore)_msi/msix_state MSI: Remove pci_scan_msi_device() MSI: Replace pci_msi_quirk with calls to pci_no_msi() PCI: remove duplicate device id from ipr PCI: remove duplicate device id from ata_piix PCI: power management: remove noise on non-manageable hw PCI: cleanup MSI code PCI: make isa_bridge Alpha-only PCI: remove quirk_sis_96x_compatible() PCI: Speed up the Intel SMBus unhiding quirk PCI Quirk: 1k I/O space IOBL_ADR fix on P64H2 shpchp: delete trailing whitespace shpchp: remove DBG_XXX_ROUTINE ...
| * PCI: Use newly defined PCI channel offline routineLinas Vepstas2007-02-07
| | | | | | | | | | | | | | | | | | Use newly minted routine to access the PCI channel state. Signed-off-by: Linas Vepstas <linas@linas.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | remove NETIF_F_TSO ifdeferyArjan van de Ven2007-02-05
|/ | | | | | | | | Remove the NETIF_F_TSO #ifdef-ery in drivers/net; this was for old-old-2.4 compat (even current 2.4 has NETIF_F_TSO) but it's time to get rid of it by now. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* ixgb: Write RA register high word first, increment versionAaron Salter2007-01-06
| | | | | | | We need to disable the AV bit before flushing the low register. Signed-off-by: <aaron.k.salter@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* ixgb: Maybe stop TX if not enough free descriptorsJesse Brandeburg2007-01-06
| | | | | | | | | A similar patch to commit 65c7973fa5b46b024f38be208aa477e8daf9a603 but now for ixgb. Cc: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* ixgb: Fix early TSO completionJesse Brandeburg2007-01-06
| | | | | | | | | | This fix was already merged in commit 96f9c2e277768099479fbed7c3b69c294b1fadef but reverted in commit 989316ddfeafd0e8fb51a4d811383769ad62637a. After stresstesting we found that the fix does not add new regressions and works around a TX hang spotted by several users. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* Merge branch 'master' of ↵David Howells2006-12-05
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: drivers/infiniband/core/iwcm.c drivers/net/chelsio/cxgb2.c drivers/net/wireless/bcm43xx/bcm43xx_main.c drivers/net/wireless/prism54/islpci_eth.c drivers/usb/core/hub.h drivers/usb/input/hid-core.c net/core/netpoll.c Fix up merge failures with Linus's head and fix new compilation failures. Signed-Off-By: David Howells <dhowells@redhat.com>
| * [NET]: Split skb->csumAl Viro2006-12-03
| | | | | | | | | | | | | | ... into anonymous union of __wsum and __u32 (csum and csum_offset resp.) Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
* | WorkStruct: make allyesconfigDavid Howells2006-11-22
|/ | | | | | Fix up for make allyesconfig. Signed-Off-By: David Howells <dhowells@redhat.com>
* IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells2006-10-05
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
* e100, e1000, ixgb: increment version numbersAuke Kok2006-09-27
| | | | | | | | e100-3.5.17-k2 e1000-7.2.9-k2 ixgb-1.0.117-k2 Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* ixgb: convert to netdev_priv(netdev)Auke Kok2006-09-27
| | | | | | PCI error recovery code recently merged needs to use netdev_priv Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* ixgb: combine more rx descriptors to improve performanceJesse Brandeburg2006-09-27
| | | | | | | | | We experimented with more descriptor buffer writebacks and found that values larger than 8 give HW problems, but 8 is safe and gives us some improved performance. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* e100, e1000, ixgb: Fix an impossible memory overwrite bugAuke Kok2006-09-27
| | | | | | | | | We keep getting requests from people that think that this might be an exploitable hole where we would overwrite 4 bytes in the netdev struct if the pci name would exceed 15 characters. In reality this will never happen but we fix it anyway. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* e100, e1000, ixgb: update copyright header and remove LICENSEAuke Kok2006-09-27
| | | | | | | | This update to the copyright header adds the mailinglist, and aligns it with the kernel licensing as well as remove the offending 'all rights reserved'. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
* Merge branch 'upstream-linus' of ↵Linus Torvalds2006-09-24
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6 * 'upstream-linus' of master.kernel.org:/pub/scm/linux/kernel/git/jgarzik/netdev-2.6: (217 commits) net/ieee80211: fix more crypto-related build breakage [PATCH] Spidernet: add ethtool -S (show statistics) [NET] GT96100: Delete bitrotting ethernet driver [PATCH] mv643xx_eth: restrict to 32-bit PPC_MULTIPLATFORM [PATCH] Cirrus Logic ep93xx ethernet driver r8169: the MMIO region of the 8167 stands behin BAR#1 e1000, ixgb: Remove pointless wrappers [PATCH] Remove powerpc specific parts of 3c509 driver [PATCH] s2io: Switch to pci_get_device [PATCH] gt96100: move to pci_get_device API [PATCH] ehea: bugfix for register access functions [PATCH] e1000 disable device on PCI error drivers/net/phy/fixed: #if 0 some incomplete code drivers/net: const-ify ethtool_ops declarations [PATCH] ethtool: allow const ethtool_ops [PATCH] sky2: big endian [PATCH] sky2: fiber support [PATCH] sky2: tx pause bug fix drivers/net: Trim trailing whitespace [PATCH] ehea: IBM eHEA Ethernet Device Driver ... Manually resolved conflicts in drivers/net/ixgb/ixgb_main.c and drivers/net/sky2.c related to CHECKSUM_HW/CHECKSUM_PARTIAL changes by commit 84fa7933a33f806bbbaae6775e87459b1ec584c0 that just happened to be next to unrelated changes in this update.
| * e1000, ixgb: Remove pointless wrappersJeff Garzik2006-09-19
| | | | | | | | Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * drivers/net: const-ify ethtool_ops declarationsJeff Garzik2006-09-13
| | | | | | | | Signed-off-by: Jeff Garzik <jeff@garzik.org>
| * ixgb: Increment version to 1.0.112-k2Auke Kok2006-08-31
| | | | | | | | Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
| * ixgb: remove skb->dev assignmentAuke Kok2006-08-31
| | | | | | | | | | | | | | Same change as e1000: remove skb->dev assignment, it's now done by netdev_alloc_skb. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
| * ixgb: Add PCI Error recovery callbacksLinas Vepstas2006-08-31
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds PCI Error recovery callbacks to the Intel 10-gigabit ethernet ixgb device driver. Lightly tested, works. "Zhang, Yanmin" <yanmin_zhang@linux.intel.com> wrote: Both pci_disable_device and ixgb_down would access the device. It doesn't follow Documentation/pci-error-recovery.txt that error_detected shouldn't do any access to the device. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
| * ixgb: Add buffer_info and test like e1000 has.Jesse Brandeburg2006-08-31
| | | | | | | | | | Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
| * ixgb: Cache-align all TX components of the adapter struct.Jesse Brandeburg2006-08-31
| | | | | | | | | | Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
| * ixgb: recalculate after how many descriptors to wake the queueAuke Kok2006-08-31
| | | | | | | | | | | | | | Recalculate when to wake the queue using DESC_NEEDED instead of a static hardcoded number. Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
| * ixgb: Set a constant blink rate for ixgb adapter identify (1sec on, 1sec off)Jesse Brandeburg2006-08-31
| | | | | | | | | | Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
| * ixgb: convert dev->priv to netdev_priv(dev).Auke Kok2006-08-31
| | | | | | | | Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
| * ixgb: Convert dev_alloc_skb to netdev_alloc_skb.Auke Kok2006-08-31
| | | | | | | | Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
| * Merge branch 'upstream-fixes' of ↵Jeff Garzik2006-08-24
| |\ | | | | | | | | | git://lost.foo-projects.org/~ahkok/git/netdev-2.6 into tmp
| | * ixgb: Increment version to 1.0.109-k4Auke Kok2006-08-16
| | | | | | | | | | | | Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
| | * ixgb: fix cache miss due to miscalculationJesse Brandeburg2006-08-16
| | | | | | | | | | | | | | | | | | | | | | | | Reduce writeback threshold by 1. We were instructing the hardware to wait until the 17th descriptor which went over the cache line limit. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke.jan.h.kok@intel.com>
| | * ixgb: Add CX4 PHY type detection and subdevice ID.Manasi Deval2006-08-16
| | | | | | | | | | | | | | | Signed-off-by: Manasi Deval <manasi.deval@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
| * | drivers/net: Remove deprecated use of pci_module_init()Jeff Garzik2006-08-19
| |/ | | | | | | | | | | | | From: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Signed-off-by: Michal Piotrowski <michal.k.k.piotrowski@gmail.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* / [NET]: Replace CHECKSUM_HW by CHECKSUM_PARTIAL/CHECKSUM_COMPLETEPatrick McHardy2006-09-22
|/ | | | | | | | | | | Replace CHECKSUM_HW by CHECKSUM_PARTIAL (for outgoing packets, whose checksum still needs to be completed) and CHECKSUM_COMPLETE (for incoming packets, device supplied full checksum). Patch originally from Herbert Xu, updated by myself for 2.6.18-rc3. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] ixgb: fix tx unit hang - properly calculate desciptor countAuke Kok2006-07-12
| | | | | | | | | | | | There were some tso bugs that only showed up with heavy load and 16kB pages that this patch fixes by making the driver's internal use count of descriptors match the count that it was estimating it needed using the DESC_NEEDED macro. This bug caused NETDEV_WATCHDOG resets aka tx timeouts. Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com> Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com> Signed-off-by: Jeff Garzik <jeff@garzik.org>
* [NET] gso: Add skb_is_gsoHerbert Xu2006-07-08
| | | | | | | | | | This patch adds the wrapper function skb_is_gso which can be used instead of directly testing skb_shinfo(skb)->gso_size. This makes things a little nicer and allows us to change the primary key for indicating whether an skb is GSO (if we ever want to do that). Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
* [PATCH] irq-flags: drivers/net: Use the new IRQF_ constantsThomas Gleixner2006-07-02
| | | | | | | | | | Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Jeff Garzik <jeff@garzik.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
* Remove obsolete #include <linux/config.h>Jörn Engel2006-06-30
| | | | | Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: Adrian Bunk <bunk@stusta.de>
* [NET]: Merge TSO/UFO fields in sk_buffHerbert Xu2006-06-23
| | | | | | | | | | | | | | | | | | | | | | | | Having separate fields in sk_buff for TSO/UFO (tso_size/ufo_size) is not going to scale if we add any more segmentation methods (e.g., DCCP). So let's merge them. They were used to tell the protocol of a packet. This function has been subsumed by the new gso_type field. This is essentially a set of netdev feature bits (shifted by 16 bits) that are required to process a specific skb. As such it's easy to tell whether a given device can process a GSO skb: you just have to and the gso_type field and the netdev's features field. I've made gso_type a conjunction. The idea is that you have a base type (e.g., SKB_GSO_TCPV4) that can be modified further to support new features. For example, if we add a hardware TSO type that supports ECN, they would declare NETIF_F_TSO | NETIF_F_TSO_ECN. All TSO packets with CWR set would have a gso_type of SKB_GSO_TCPV4 | SKB_GSO_TCPV4_ECN while all other TSO packets would be SKB_GSO_TCPV4. This means that only the CWR packets need to be emulated in software. Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
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