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path: root/drivers/net/ethernet/cavium/liquidio/lio_vf_main.c (follow)
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2017-10-28liquidio: fix kernel panic in VF driverFelix Manlunas1-3/+3
Doing ifconfig down on VF driver in the middle of receiving line rate traffic causes a kernel panic: LiquidIO_VF 0000:02:00.3: should not come here should not get rx when poll mode = 0 for vf BUG: unable to handle kernel NULL pointer dereference at (null) . . . Call Trace: <IRQ> ? tasklet_action+0x102/0x120 __do_softirq+0x91/0x292 irq_exit+0xb6/0xc0 do_IRQ+0x4f/0xd0 common_interrupt+0x93/0x93 </IRQ> RIP: 0010:cpuidle_enter_state+0x142/0x2f0 RSP: 0018:ffffffffa6403e20 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff59 RAX: 0000000000000000 RBX: 0000000000000003 RCX: 000000000000001f RDX: 0000000000000000 RSI: 000000002ab7519f RDI: 0000000000000000 RBP: ffffffffa6403e58 R08: 0000000000000084 R09: 0000000000000018 R10: ffffffffa6403df0 R11: 00000000000003c7 R12: 0000000000000003 R13: ffffd27ebd806800 R14: ffffffffa64d40d8 R15: 0000007be072823f cpuidle_enter+0x17/0x20 call_cpuidle+0x23/0x40 do_idle+0x18c/0x1f0 cpu_startup_entry+0x64/0x70 rest_init+0xa5/0xb0 start_kernel+0x45e/0x46b x86_64_start_reservations+0x24/0x26 x86_64_start_kernel+0x6f/0x72 secondary_startup_64+0xa5/0xa5 Code: Bad RIP value. RIP: (null) RSP: ffff9246ed003f28 CR2: 0000000000000000 ---[ end trace 92731e80f31b7d7d ]--- Kernel panic - not syncing: Fatal exception in interrupt Kernel Offset: 0x24000000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff) ---[ end Kernel panic - not syncing: Fatal exception in interrupt Reason is: in the function assigned to net_device_ops->ndo_stop, the steps for bringing down the interface are done in the wrong order. The step that notifies the NIC firmware to stop forwarding packets to host is done too late. Fix it by moving that step to the beginning. Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-28liquidio: xmit_more supportIntiyaz Basha1-5/+12
Defer ringing the Tx doorbell if skb->xmit_more is set unless the Tx queue is full or stopped. To keep latency low, use a deferral limit of 8 packets. We chose 8 because Octeon can fetch at most 8 packets in a single PCI read, and our tests show that 8 results in low latency. Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-19liquidio: mark expected switch fall-through in octeon_destroy_resourcesGustavo A. R. Silva1-1/+1
In preparation to enabling -Wimplicit-fallthrough, mark switch cases where we are expecting to fall through. Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Acked-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-10-19liquidio: remove unnecessary NULL check before kfree in delete_glistsGustavo A. R. Silva1-2/+1
NULL check before freeing functions like kfree is not needed. This issue was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com> Acked-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-22liquidio: make VF driver notify NIC firmware of MTU changeVeerasenareddy Burru1-5/+22
Signed-off-by: Veerasenareddy Burru <veerasenareddy.burru@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-16liquidio: update VF's netdev->max_mtu if there's a change in PF's MTUVeerasenareddy Burru1-3/+6
A VF's MTU is capped at the parent PF's MTU. So if there's a change in the PF's MTU, then update the VF's netdev->max_mtu. Also remove duplicate log messages for MTU change. Signed-off-by: Veerasenareddy Burru <veerasenareddy.burru@cavium.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-15liquidio: added support for ethtool --set-channels featureIntiyaz Basha1-11/+17
adding support for ethtool --set-channels feature Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-15liquidio: moved octeon_setup_interrupt to lio_core.cIntiyaz Basha1-98/+0
Moving common octeon_setup_interrupt to lio_core.c Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-15liquidio: moved liquidio_msix_intr_handler to lio_core.cIntiyaz Basha1-45/+0
Moving common liquidio_msix_intr_handler to lio_core.c Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-14liquidio: added support for ethtool --set-ring featureIntiyaz Basha1-1/+5
added support for ethtool --set-ring feature Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-14liquidio: moved liquidio_setup_io_queues to lio_core.cIntiyaz Basha1-92/+1
Moving common liquidio_setup_io_queues to lio_core.c Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-14liquidio: moved liquidio_napi_poll to lio_core.cIntiyaz Basha1-54/+0
Moving common liquidio_napi_poll to lio_core.c Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-14liquidio: moved liquidio_napi_drv_callback to lio_core.cIntiyaz Basha1-12/+1
Moving common liquidio_napi_drv_callback to lio_core.c Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-14liquidio: moved liquidio_push_packet to lio_core.cIntiyaz Basha1-128/+0
Moving common liquidio_push_packet to lio_core.c Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-14liquidio: moved octeon_setup_droq to lio_core.cIntiyaz Basha1-35/+0
Moving common octeon_setup_droq to lio_core.c Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-14liquidio: moved update_txq_status to lio_core.cIntiyaz Basha1-25/+1
Moving common update_txq_status to lio_core.c Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-14liquidio: moved wait_for_pending_requests to octeon_network.hIntiyaz Basha1-27/+1
Moving common function wait_for_pending_requests to octeon_network.h Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-08-09liquidio: napi cleanupIntiyaz Basha1-0/+14
Disable napi when interface is going down. Delete napi when destroying the interface. Signed-off-by: Intiyaz Basha <intiyaz.basha@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-07-19liquidio: lio_vf_main: remove unnecessary static in setup_io_queues()Gustavo A. R. Silva1-2/+2
Remove unnecessary static on local variables cpu_id_modulus and cpu_id. Such variables are initialized before being used, on every execution path throughout the function. The static has no benefit and, removing it reduces the object file size. This issue was detected using Coccinelle and the following semantic patch: @bad exists@ position p; identifier x; type T; @@ static T x@p; ... x = <+...x...+> @@ identifier x; expression e; type T; position p != bad.p; @@ -static T x@p; ... when != x when strict ?x = e; In the following log you can see a significant difference in the object file size. Also, there is a significant difference in the bss segment. This log is the output of the size command, before and after the code change: before: text data bss dec hex filename 55656 10680 576 66912 10560 drivers/net/ethernet/cavium/liquidio/lio_vf_main.o after: text data bss dec hex filename 55796 10536 448 66780 104dc drivers/net/ethernet/cavium/liquidio/lio_vf_main.o Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-18liquidio: replace info-pointer mode with buffer-pointer-only modePrasad Kanneganti1-2/+3
Each Octeon output ring can DMA packets to host memory in two modes: info- pointer mode and buffer-pointer-only mode. In info-pointer mode, Octeon takes two buffer pointers for each packet and places the length of the packet along with specified number of bytes from the beginning of the packet into one buffer and the rest of the packet in a separate buffer. In buffer-pointer-only mode, Octeon takes single buffer pointer and places the length of the packet at the beginning of the buffer followed by the packet data. This patch switches all Octeon output rings from info-pointer mode to buffer-pointer-only mode. This results in fewer DMA setups and cache line snoops. Signed-off-by: Prasad Kanneganti <pkanneganti@cavium.com> Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-09liquidio: disallow enabling firmware debug from a VFDerek Chickles1-4/+0
Disallow enabling firmware debug from a VF. Only PF is allowed to do that. Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-06-02liquidio: VF interrupt initialization cleanupRick Farrington1-2/+17
Set initialization state variable to (reflect interrupt initialization) at correct time (immediately after having configured interrupts). This fixes problem of inconsistent IRQ allocation in case of [obscure] failure when negotiating with PF driver during init. Clean-up of interrupt enablement during initialization & avoid potential race condition with chip-specific code (i.e. perform interrupt control in main driver module). Added explanatory comments regarding interrupt enablement. Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com> Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-21net: ethernet: update drivers to handle HWTSTAMP_FILTER_NTP_ALLMiroslav Lichvar1-0/+1
Include HWTSTAMP_FILTER_NTP_ALL in net_hwtstamp_validate() as a valid filter and update drivers which can timestamp all packets, or which explicitly list unsupported filters instead of using a default case, to handle the filter. CC: Richard Cochran <richardcochran@gmail.com> CC: Willem de Bruijn <willemb@google.com> Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-05-16liquidio: use pcie_flr instead of duplicating itChristoph Hellwig1-16/+1
Signed-off-by: Christoph Hellwig <hch@lst.de> Tested-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-04-08liquidio: fix VF incorrectly indicating that it successfully set its VLANFelix Manlunas1-1/+18
For security reasons, NIC firmware does not allow VF to set its VLAN if PF set it already. Firmware allows VF to set its VLAN if PF did not set it. After the VF instructs the firmware to set the VLAN, VF always indicates (via return 0) that the operation is successful--even for the times when it isn't. Put in a mechanism for the VF's set VLAN function to receive the firmware response code, then make that function return -EPERM if the firmware forbids the operation. Make that mechanism available for other functions that may, in the future, be interested in receiving the response code from the firmware. That mechanism involves adding new fields to struct octnic_ctrl_pkt, so make all users of struct octnic_ctrl_pkt initialize the struct to zero before using it; otherwise, the mechanism might act on uninitialized garbage. Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-30drivers: add explicit interrupt.h includesFlorian Westphal1-0/+1
These files all use functions declared in interrupt.h, but currently rely on implicit inclusion of this file (via netns/xfrm.h). That won't work anymore when the flow cache is removed so include that header where needed. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-28liquidio: refactor interrupt moderation codePrasad Kanneganti1-17/+0
Refactor interrupt moderation code for flexibility because parameters are different for 10G and 25G cards. Currently parameters (for 10G only) come from macros compiled-in to the PF and VF drivers; fix it so that parameters suitable for the card (10G or 25G) come from the NIC firmware via response to a command. Also bump up driver version to 1.5.1 to match newer NIC firmware version. Signed-off-by: Prasad Kanneganti <prasad.kanneganti@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-22liquidio: fix tx completions in napi pollVSR Burru1-8/+11
If there are no egress packets pending, then don't look for tx completions in napi poll. Also, fix broken tx queue wakeup logic. Signed-off-by: VSR Burru <veerasenareddy.burru@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-22liquidio: allocate RX buffers in OOM conditions in PF and VFSatanand Burla1-0/+5
Add workqueue that is periodically run to try to allocate RX buffers in OOM conditions in PF and VF. Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-22liquidio: fix Coverity scan errorsFelix Manlunas1-1/+2
Fix Coverity scan errors by not dereferencing lio->glists_dma_base pointer if it's NULL. See http://marc.info/?l=linux-netdev&m=149002294305614&w=2 Reported-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: VSR Burru <veerasenareddy.burru@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-21liquidio: remove duplicate codeSatanand Burla1-36/+0
Remove code duplicated in PF and VF; define that code once only in a common header file included by PF and VF. Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-16liquidio: use meaningful names for IRQsRick Farrington1-5/+32
All IRQs owned by the PF and VF drivers share the same nondescript name "octeon"; this makes it difficult to setup interrupt affinity. Change the IRQ names to reflect their specific purpose: LiquidIO<id>-<func>-<type>-<queue pair num> Examples: LiquidIO0-pf0-rxtx-3 LiquidIO1-vf1-rxtx-0 LiquidIO0-pf0-aux We cannot use netdev->name for naming the IRQs because: 1. Early during init, the PF and VF drivers require interrupts to send/receive control data from the NIC firmware; so the PF and VF must request IRQs long before the netdev struct is registered. 2. The IRQ name can only be specified at the time it is requested. It cannot be changed after that. Signed-off-by: Rick Farrington <ricardo.farrington@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-03-09liquidio: improve UDP TX performanceVSR Burru1-49/+55
Improve UDP TX performance by: * reducing the ring size from 2K to 512 * replacing the numerous streaming DMA allocations for info buffers and gather lists with one large consistent DMA allocation per ring BQL is not effective here. We reduced the ring size because there is heavy overhead with dma_map_single every so often. With iommu=on, dma_map_single in PF Tx data path was taking longer time (~700usec) for every ~250 packets. Debugged intel_iommu code, and found that PF driver is utilizing too many static IO virtual address mapping entries (for gather list entries and info buffers): about 100K entries for two PF's each using 8 rings. Also, finding an empty entry (in rbtree of device domain's iova mapping in kernel) during Tx path becomes a bottleneck every so often; the loop to find the empty entry goes through over 40K iterations; this is too costly and was the major overhead. Overhead is low when this loop quits quickly. Netperf benchmark numbers before and after patch: PF UDP TX +--------+--------+------------+------------+---------+ | | | Before | After | | | Number | | Patch | Patch | | | of | Packet | Throughput | Throughput | Percent | | Flows | Size | (Gbps) | (Gbps) | Change | +--------+--------+------------+------------+---------+ | | 360 | 0.52 | 0.93 | +78.9 | | 1 | 1024 | 1.62 | 2.84 | +75.3 | | | 1518 | 2.44 | 4.21 | +72.5 | +--------+--------+------------+------------+---------+ | | 360 | 0.45 | 1.59 | +253.3 | | 4 | 1024 | 1.34 | 5.48 | +308.9 | | | 1518 | 2.27 | 8.31 | +266.1 | +--------+--------+------------+------------+---------+ | | 360 | 0.40 | 1.61 | +302.5 | | 8 | 1024 | 1.64 | 4.24 | +158.5 | | | 1518 | 2.87 | 6.52 | +127.2 | +--------+--------+------------+------------+---------+ VF UDP TX +--------+--------+------------+------------+---------+ | | | Before | After | | | Number | | Patch | Patch | | | of | Packet | Throughput | Throughput | Percent | | Flows | Size | (Gbps) | (Gbps) | Change | +--------+--------+------------+------------+---------+ | | 360 | 1.28 | 1.49 | +16.4 | | 1 | 1024 | 4.44 | 4.39 | -1.1 | | | 1518 | 6.08 | 6.51 | +7.1 | +--------+--------+------------+------------+---------+ | | 360 | 2.35 | 2.35 | 0.0 | | 4 | 1024 | 6.41 | 8.07 | +25.9 | | | 1518 | 9.56 | 9.54 | -0.2 | +--------+--------+------------+------------+---------+ | | 360 | 3.41 | 3.65 | +7.0 | | 8 | 1024 | 9.35 | 9.34 | -0.1 | | | 1518 | 9.56 | 9.57 | +0.1 | +--------+--------+------------+------------+---------+ Signed-off-by: VSR Burru <veerasenareddy.burru@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-10net: liquidio: fix build errors when linux/phy*.h is removed from net/dsa.hRussell King1-0/+1
drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:30: error: expected declaration specifiers or '...' before string constant drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:30: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:30: error: type defaults to 'int' in declaration of 'MODULE_AUTHOR' drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:30: error: function declaration isn't a prototype drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:31: error: expected declaration specifiers or '...' before string constant drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:31: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:31: error: type defaults to 'int' in declaration of 'MODULE_DESCRIPTION' drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:31: error: function declaration isn't a prototype drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:32: error: expected declaration specifiers or '...' before string constant drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:32: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:32: error: type defaults to 'int' in declaration of 'MODULE_LICENSE' drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:32: error: function declaration isn't a prototype drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:33: error: expected declaration specifiers or '...' before string constant drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:33: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:33: error: type defaults to 'int' in declaration of 'MODULE_VERSION' drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:33: error: function declaration isn't a prototype drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:36: error: expected ')' before 'int' drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:37: error: expected ')' before string constant drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:325: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:325: error: type defaults to 'int' in declaration of 'MODULE_DEVICE_TABLE' drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:325: warning: parameter names (without types) in function declaration drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:3250: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:3250: error: type defaults to 'int' in declaration of 'module_init' drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:3250: warning: parameter names (without types) in function declaration drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:3251: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:3251: error: type defaults to 'int' in declaration of 'module_exit' drivers/net/ethernet/cavium/liquidio/lio_vf_main.c:3251: warning: parameter names (without types) in function declaration drivers/net/ethernet/cavium/liquidio/lio_main.c:36: error: expected declaration specifiers or '...' before string constant drivers/net/ethernet/cavium/liquidio/lio_main.c:36: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_main.c:36: error: type defaults to 'int' in declaration of 'MODULE_AUTHOR' drivers/net/ethernet/cavium/liquidio/lio_main.c:36: error: function declaration isn't a prototype drivers/net/ethernet/cavium/liquidio/lio_main.c:37: error: expected declaration specifiers or '...' before string constant drivers/net/ethernet/cavium/liquidio/lio_main.c:37: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_main.c:37: error: type defaults to 'int' in declaration of 'MODULE_DESCRIPTION' drivers/net/ethernet/cavium/liquidio/lio_main.c:37: error: function declaration isn't a prototype drivers/net/ethernet/cavium/liquidio/lio_main.c:38: error: expected declaration specifiers or '...' before string constant drivers/net/ethernet/cavium/liquidio/lio_main.c:38: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_main.c:38: error: type defaults to 'int' in declaration of 'MODULE_LICENSE' drivers/net/ethernet/cavium/liquidio/lio_main.c:38: error: function declaration isn't a prototype drivers/net/ethernet/cavium/liquidio/lio_main.c:39: error: expected declaration specifiers or '...' before string constant drivers/net/ethernet/cavium/liquidio/lio_main.c:39: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_main.c:39: error: type defaults to 'int' in declaration of 'MODULE_VERSION' drivers/net/ethernet/cavium/liquidio/lio_main.c:39: error: function declaration isn't a prototype drivers/net/ethernet/cavium/liquidio/lio_main.c:40: error: expected declaration specifiers or '...' before string constant drivers/net/ethernet/cavium/liquidio/lio_main.c:40: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_main.c:40: error: type defaults to 'int' in declaration of 'MODULE_FIRMWARE' drivers/net/ethernet/cavium/liquidio/lio_main.c:40: error: function declaration isn't a prototype drivers/net/ethernet/cavium/liquidio/lio_main.c:41: error: expected declaration specifiers or '...' before string constant drivers/net/ethernet/cavium/liquidio/lio_main.c:41: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_main.c:41: error: type defaults to 'int' in declaration of 'MODULE_FIRMWARE' drivers/net/ethernet/cavium/liquidio/lio_main.c:41: error: function declaration isn't a prototype drivers/net/ethernet/cavium/liquidio/lio_main.c:42: error: expected declaration specifiers or '...' before string constant drivers/net/ethernet/cavium/liquidio/lio_main.c:42: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_main.c:42: error: type defaults to 'int' in declaration of 'MODULE_FIRMWARE' drivers/net/ethernet/cavium/liquidio/lio_main.c:42: error: function declaration isn't a prototype drivers/net/ethernet/cavium/liquidio/lio_main.c:43: error: expected declaration specifiers or '...' before string constant drivers/net/ethernet/cavium/liquidio/lio_main.c:43: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_main.c:43: error: type defaults to 'int' in declaration of 'MODULE_FIRMWARE' drivers/net/ethernet/cavium/liquidio/lio_main.c:43: error: function declaration isn't a prototype drivers/net/ethernet/cavium/liquidio/lio_main.c:46: error: expected ')' before 'int' drivers/net/ethernet/cavium/liquidio/lio_main.c:48: error: expected ')' before string constant drivers/net/ethernet/cavium/liquidio/lio_main.c:53: error: expected ')' before 'int' drivers/net/ethernet/cavium/liquidio/lio_main.c:54: error: expected ')' before string constant drivers/net/ethernet/cavium/liquidio/lio_main.c:57: error: expected ')' before 'sizeof' drivers/net/ethernet/cavium/liquidio/lio_main.c:58: error: expected ')' before string constant drivers/net/ethernet/cavium/liquidio/lio_main.c:498: warning: data definitionhas no type or storage class drivers/net/ethernet/cavium/liquidio/lio_main.c:498: error: type defaults to 'int' in declaration of 'MODULE_DEVICE_TABLE' drivers/net/ethernet/cavium/liquidio/lio_main.c:498: warning: parameter names (without types) in function declaration drivers/net/ethernet/cavium/liquidio/lio_main.c: In function 'octeon_recv_vf_drv_notice': drivers/net/ethernet/cavium/liquidio/lio_main.c:4393: error: implicit declaration of function 'try_module_get' drivers/net/ethernet/cavium/liquidio/lio_main.c:4400: error: implicit declaration of function 'module_put' drivers/net/ethernet/cavium/liquidio/lio_main.c: At top level: drivers/net/ethernet/cavium/liquidio/lio_main.c:4670: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_main.c:4670: error: type defaults to 'int' in declaration of 'module_init' drivers/net/ethernet/cavium/liquidio/lio_main.c:4670: warning: parameter names (without types) in function declaration drivers/net/ethernet/cavium/liquidio/lio_main.c:4671: warning: data definition has no type or storage class drivers/net/ethernet/cavium/liquidio/lio_main.c:4671: error: type defaults to 'int' in declaration of 'module_exit' drivers/net/ethernet/cavium/liquidio/lio_main.c:4671: warning: parameter names (without types) in function declaration Add linux/module.h to both these files. drivers/net/ethernet/cavium/liquidio/octeon_console.c:40:31: error: expected ')' before 'int' drivers/net/ethernet/cavium/liquidio/octeon_console.c:42:4: error: expected ')' before string constant Add linux/moduleparam.h to this file. Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Acked-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-07liquidio: do not dereference pointer if it's NULLFelix Manlunas1-1/+1
Fix smatch errors by not dereferencing iq pointer if it's NULL. See http://marc.info/?l=kernel-janitors&m=148637299004834&w=2 Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-02-01liquidio: fix for iq and droq cnts going negativeSatanand Burla1-1/+5
Flush the mmio writes before releasing spin locks. if the maintained counts get too high > 2M force writeback of the counts to clear them Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com> Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-30drivers: net: generalize napi_complete_done()Eric Dumazet1-1/+1
napi_complete_done() allows to opt-in for gro_flush_timeout, added back in linux-3.19, commit 3b47d30396ba ("net: gro: add a per device gro flush timer") This allows for more efficient GRO aggregation without sacrifying latencies. Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-26liquidio: Avoid accessing skb after submitting to input queueSatanand Burla1-3/+3
Accessing skb after submitting to input queue can cause access to stale pointers if the skb ends up being transmitted and freed by that time. Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-18net: Remove usage of net_device last_rx memberTobias Klauser1-1/+0
The network stack no longer uses the last_rx member of struct net_device since the bonding driver switched to use its own private last_rx in commit 9f242738376d ("bonding: use last_arp_rx in slave_last_rx()"). However, some drivers still (ab)use the field for their own purposes and some driver just update it without actually using it. Previously, there was an accompanying comment for the last_rx member added in commit 4dc89133f49b ("net: add a comment on netdev->last_rx") which asked drivers not to update is, unless really needed. However, this commend was removed in commit f8ff080dacec ("bonding: remove useless updating of slave->dev->last_rx"), so some drivers added later on still did update last_rx. Remove all usage of last_rx and switch three drivers (sky2, atp and smc91c92_cs) which actually read and write it to use their own private copy in netdev_priv. Compile-tested with allyesconfig and allmodconfig on x86 and arm. Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Jay Vosburgh <j.vosburgh@gmail.com> Cc: Veaceslav Falico <vfalico@gmail.com> Cc: Andy Gospodarek <andy@greyhouse.net> Cc: Mirko Lindner <mlindner@marvell.com> Cc: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Acked-by: Eric Dumazet <edumazet@google.com> Reviewed-by: Jay Vosburgh <jay.vosburgh@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-13liquidio: use fallback for selecting txqSatanand Burla1-21/+0
Remove assignment to ndo_select_queue so that fallback is used for selecting txq. Also remove the now-useless function that used to be assigned to ndo_select_queue. Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-10liquidio: store the L4 hash of rx packets in skbPrasad Kanneganti1-1/+15
Store the L4 hash of received packets in the skb; the hash is computed in the NIC firmware. Signed-off-by: Prasad Kanneganti <prasad.kanneganti@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2017-01-08liquidio: simplify octeon_flush_iq()Derek Chickles1-1/+1
Because every call to octeon_flush_iq() has a hardcoded 1 for the pending_thresh argument, simplify that function by removing that argument. This avoids one atomic read as well. Signed-off-by: Derek Chickles <derek.chickles@cavium.com> Signed-off-by: Felix Manlunas <felix.manlunas@cavium.com> Signed-off-by: Satanand Burla <satananda.burla@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-08liquidio VF error handlingRaghu Vatsavayi1-0/+139
Adds support for VF error handling. Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-08liquidio VF timestampRaghu Vatsavayi1-1/+179
Adds support for VF timestamp. Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-08liquidio VF ethtool statsRaghu Vatsavayi1-0/+79
Adds support for VF ethtool stats Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-08liquidio VF vxlanRaghu Vatsavayi1-3/+94
Adds VF vxlan offload support. Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-08liquidio VF vlan supportRaghu Vatsavayi1-0/+80
Adds support for VF vlan features. Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-08liquidio VF rx data and ctl pathRaghu Vatsavayi1-2/+410
Adds support for VF receive data control path. Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-08liquidio CN23XX: VF TX buffersRaghu Vatsavayi1-0/+182
Adds support for freeing VF xmit buffers. Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-08liquidio CN23XX: VF xmitRaghu Vatsavayi1-0/+340
Adds support for transmit functionality in VF. Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@caviumnetworks.com> Signed-off-by: Derek Chickles <derek.chickles@caviumnetworks.com> Signed-off-by: Satanand Burla <satananda.burla@caviumnetworks.com> Signed-off-by: Felix Manlunas <felix.manlunas@caviumnetworks.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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