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2019-09-05serial: tegra: report clk rate errorsKrishna Yarlagadda
Standard UART controllers support +/-4% baud rate error tolerance. Tegra186 only supports 0% to +4% error tolerance whereas other Tegra chips support standard +/-4% rate. Add chip data for knowing error tolerance level for each soc. Creating new compatible for Tegra194 chip as it supports baud rate error tolerance of -2 to +2%, different from older chips. Signed-off-by: Shardar Shariff Md <smohammed@nvidia.com> Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com> Link: https://lore.kernel.org/r/1567572187-29820-12-git-send-email-kyarlagadda@nvidia.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05serial: tegra: add support to adjust baud rateKrishna Yarlagadda
Add support to adjust baud rates to fall under supported tolerance range through DT. Tegra186 chip has a hardware issue resulting in frame errors when tolerance level for baud rate is negative. Provided entries to adjust baud rate to be within acceptable range and work with devices that can send negative baud rate. Also report error when baud rate set is out of tolerance range of controller updated in device tree. Signed-off-by: Shardar Shariff Md <smohammed@nvidia.com> Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com> Link: https://lore.kernel.org/r/1567572187-29820-11-git-send-email-kyarlagadda@nvidia.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05serial: tegra: DT for Adjusted baud ratesKrishna Yarlagadda
Tegra186 chip has a hardware issue resulting in frame errors when tolerance level for baud rate is negative. Provided entries to adjust baud rate to be within acceptable range and work with devices that can send negative baud rate. Also report error when baud rate set is out of tolerance range of controller updated in device tree. Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com> Link: https://lore.kernel.org/r/1567572187-29820-10-git-send-email-kyarlagadda@nvidia.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05serial: tegra: add support to use 8 bytes triggerKrishna Yarlagadda
Add support to use 8 bytes trigger for Tegra186 SOC. Signed-off-by: Shardar Shariff Md <smohammed@nvidia.com> Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com> Link: https://lore.kernel.org/r/1567572187-29820-9-git-send-email-kyarlagadda@nvidia.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05serial: tegra: set maximum num of uart ports to 8Krishna Yarlagadda
Set maximum number of UART ports to 8 as older chips have 5 ports and Tergra186 and later chips will have 8 ports. Add this info to chip data. Read device tree compatible of this driver and register uart driver with max ports of matching chip data. Signed-off-by: Shardar Shariff Md <smohammed@nvidia.com> Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com> Link: https://lore.kernel.org/r/1567572187-29820-8-git-send-email-kyarlagadda@nvidia.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05serial: tegra: check for FIFO mode enabled statusKrishna Yarlagadda
Chips prior to Tegra186 needed delay of 3 UART clock cycles to avoid data loss. This issue is fixed in Tegra186 and a new flag is added to check if FIFO mode is enabled. chip data updated to check if this flag is available for a chip. Tegra186 has new compatible to enable this flag. Signed-off-by: Shardar Shariff Md <smohammed@nvidia.com> Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com> Link: https://lore.kernel.org/r/1567572187-29820-7-git-send-email-kyarlagadda@nvidia.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05dt-binding: serial: tegra: add new chipsKrishna Yarlagadda
Add new compatible string for Tegra186. It differs from earlier chips as it has FIFO mode enable check and 8 byte DMA buffer. Add new compatible string for Tegra194. Tegra194 has different error tolerance levels for baud rate compared to older chips. Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com> Link: https://lore.kernel.org/r/1567572187-29820-6-git-send-email-kyarlagadda@nvidia.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05serial: tegra: report error to upper tty layerKrishna Yarlagadda
Report overrun/parity/frame/break errors to top tty layer. Add support to ignore break character if IGNBRK is set. Signed-off-by: Shardar Shariff Md <smohammed@nvidia.com> Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com> Link: https://lore.kernel.org/r/1567572187-29820-5-git-send-email-kyarlagadda@nvidia.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05serial: tegra: flush the RX fifo on frame errorShardar Shariff Md
FIFO reset/flush code implemented now does not follow programming guidelines. RTS line has to be turned off while flushing FIFOs to avoid new transfers. Also check LSR bits UART_LSR_TEMT and UART_LSR_DR to confirm FIFOs are flushed. Signed-off-by: Shardar Shariff Md <smohammed@nvidia.com> Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com> Link: https://lore.kernel.org/r/1567572187-29820-4-git-send-email-kyarlagadda@nvidia.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05serial: tegra: avoid reg access when clk disabledAhung Cheng
This avoids two race conditions from the UART shutdown sequence both leading to 'Machine check error in AXI2APB' and kernel oops. One was that the clock was disabled before the DMA was terminated making it possible for the DMA callbacks to be called after the clock was disabled. These callbacks could write to the UART registers causing timeout. The second was that the clock was disabled before the UART was completely flagged as closed. This is done after the shutdown is called and a new write could be started after the clock was disabled. tegra_uart_start_pio_tx could be called causing timeout. Given that the baud rate is reset at the end of shutdown sequence, this fix is to examine the baud rate to avoid register access from both race conditions. Besides, terminate the DMA before disabling the clock. Signed-off-by: Ahung Cheng <ahcheng@nvidia.com> Signed-off-by: Shardar Mohammed <smohammed@nvidia.com> Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com> Link: https://lore.kernel.org/r/1567572187-29820-3-git-send-email-kyarlagadda@nvidia.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05serial: tegra: add support to ignore readShardar Shariff Md
Add support to ignore read characters if CREAD flag is not set. Signed-off-by: Shardar Shariff Md <smohammed@nvidia.com> Signed-off-by: Krishna Yarlagadda <kyarlagadda@nvidia.com> Link: https://lore.kernel.org/r/1567572187-29820-2-git-send-email-kyarlagadda@nvidia.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05tipc: add NULL pointer check before calling kfree_rcuXin Long
Unlike kfree(p), kfree_rcu(p, rcu) won't do NULL pointer check. When tipc_nametbl_remove_publ returns NULL, the panic below happens: BUG: unable to handle kernel NULL pointer dereference at 0000000000000068 RIP: 0010:__call_rcu+0x1d/0x290 Call Trace: <IRQ> tipc_publ_notify+0xa9/0x170 [tipc] tipc_node_write_unlock+0x8d/0x100 [tipc] tipc_node_link_down+0xae/0x1d0 [tipc] tipc_node_check_dest+0x3ea/0x8f0 [tipc] ? tipc_disc_rcv+0x2c7/0x430 [tipc] tipc_disc_rcv+0x2c7/0x430 [tipc] ? tipc_rcv+0x6bb/0xf20 [tipc] tipc_rcv+0x6bb/0xf20 [tipc] ? ip_route_input_slow+0x9cf/0xb10 tipc_udp_recv+0x195/0x1e0 [tipc] ? tipc_udp_is_known_peer+0x80/0x80 [tipc] udp_queue_rcv_skb+0x180/0x460 udp_unicast_rcv_skb.isra.56+0x75/0x90 __udp4_lib_rcv+0x4ce/0xb90 ip_local_deliver_finish+0x11c/0x210 ip_local_deliver+0x6b/0xe0 ? ip_rcv_finish+0xa9/0x410 ip_rcv+0x273/0x362 Fixes: 97ede29e80ee ("tipc: convert name table read-write lock to RCU") Reported-by: Li Shuang <shuali@redhat.com> Signed-off-by: Xin Long <lucien.xin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05serial: sprd: correct the wrong sequence of argumentsChunyan Zhang
The sequence of arguments which was passed to handle_lsr_errors() didn't match the parameters defined in that function, &lsr was passed to flag and &flag was passed to lsr, this patch fixed that. Fixes: b7396a38fb28 ("tty/serial: Add Spreadtrum sc9836-uart driver support") Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Signed-off-by: Chunyan Zhang <zhang.lyra@gmail.com> Cc: stable <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20190905074151.5268-1-zhang.lyra@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05dt-bindings: serial: Convert riscv,sifive-serial to json-schemaPragnesh Patel
Convert the riscv,sifive-serial binding to DT schema using json-schema. Signed-off-by: Pragnesh Patel <pragnesh.patel@sifive.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/1567592383-8920-1-git-send-email-pragnesh.patel@sifive.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05serial: max310x: turn off transmitter before activating AutoCTS or auto ↵Christoph Vogtländer
transmitter flow control As documented in the data-sheet, the transmitter must be disabled before activating AutoCTS or auto transmitter flow control. Accordingly, the transmitter must be enabled after AutoCTS or auto transmitter flow control gets deactivated. Signed-off-by: Christoph Vogtländer <c.vogtlaender@sigma-surface-science.com> Link: https://lore.kernel.org/r/20190904121746.4641-1-c.vogtlaender@sigma-surface-science.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05serial: max310x: Properly set flags in AutoCTS modeChristoph Vogtländer
Commit 391f93f2ec9f ("serial: core: Rework hw-assisted flow control support") has changed the way the AutoCTS mode is handled. According to that change, serial drivers which enable H/W AutoCTS mode must set UPSTAT_AUTORTS, UPSTAT_AUTOCTS and UPSTAT_AUTOXOFF to prevent the serial core from inadvertently disabling RX or TX. This patch adds proper handling of UPSTAT_AUTORTS, UPSTAT_AUTOCTS and UPSTAT_AUTOXOFF flags. Signed-off-by: Christoph Vogtländer <c.vogtlaender@sigma-surface-science.com> Link: https://lore.kernel.org/r/20190904121141.4570-1-c.vogtlaender@sigma-surface-science.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05Merge tag 'linux-can-next-for-5.4-20190903' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next Marc Kleine-Budde says: ==================== pull-request: can-next 2019-09-03 this is a pull request for net-next/master consisting of 15 patches. The first patch is by Christer Beskow, targets the kvaser_pciefd driver and fixes the PWM generator's frequency. The next three patches are by Dan Murphy, the tcan4x5x is updated to use a proper interrupts/interrupt-parent DT binding to specify the devices IRQ line. Further the unneeded wake ups of the device is removed from the driver. A patch by me for the mcp25xx driver removes the deprecated board file setup example. Three patches by Andy Shevchenko simplify clock handling, update the driver from OF to device property API and simplify the mcp251x_can_suspend() function. The remaining 7 patches are by me and clean up checkpatch warnings in the generic CAN device infrastructure. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05riscv: refactor the IPI codeChristoph Hellwig
This prepares for adding native non-SBI IPI code. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Atish Patra <atish.patra@wdc.com> Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
2019-09-05vsock/virtio: a better comment on credit updateMichael S. Tsirkin
The comment we have is just repeating what the code does. Include the *reason* for the condition instead. Cc: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05riscv: Add support for libdwMao Han
This patch adds support for DWARF register mappings and libdw registers initialization, which is used by perf callchain analyzing when --call-graph=dwarf is given. Signed-off-by: Mao Han <han_mao@c-sky.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Greentime Hu <green.hu@gmail.com> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: linux-riscv <linux-riscv@lists.infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Guo Ren <guoren@kernel.org> Tested-by: Greentime Hu <greentime.hu@sifive.com> Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
2019-09-05Merge branch 'net-tls-minor-cleanups'David S. Miller
Jakub Kicinski says: ==================== net/tls: minor cleanups This set is a grab bag of TLS cleanups accumulated in my tree in an attempt to avoid merge problems with net. Nothing stands out. First patch dedups context information. Next control path locking is very slightly optimized. Fourth patch cleans up ugly #ifdefs. ==================== Reviewed-by: Boris Pismenny <borisp@mellanox.com> Reviewed-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05net/tls: dedup the record cleanupJakub Kicinski
If retransmit record hint fall into the cleanup window we will free it by just walking the list. No need to duplicate the code. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: John Hurley <john.hurley@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05net/tls: clean up the number of #ifdefs for CONFIG_TLS_DEVICEJakub Kicinski
TLS code has a number of #ifdefs which make the code a little harder to follow. Recent fixes removed the ifdef around the TLS_HW define, so we can switch to the often used pattern of defining tls_device functions as empty static inlines in the header when CONFIG_TLS_DEVICE=n. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: John Hurley <john.hurley@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Acked-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05net/tls: narrow down the critical area of device_offload_lockJakub Kicinski
On setsockopt path we need to hold device_offload_lock from the moment we check netdev is up until the context is fully ready to be added to the tls_device_list. No need to hold it around the get_netdev_for_sock(). Change the code and remove the confusing comment. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: John Hurley <john.hurley@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05net/tls: don't jump to returnJakub Kicinski
Reusing parts of error path for normal exit will make next commit harder to read, untangle the two. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: John Hurley <john.hurley@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05net/tls: use the full sk_proto pointerJakub Kicinski
Since we already have the pointer to the full original sk_proto stored use that instead of storing all individual callback pointers as well. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: John Hurley <john.hurley@netronome.com> Reviewed-by: Dirk van der Merwe <dirk.vandermerwe@netronome.com> Acked-by: John Fastabend <john.fastabend@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05riscv: Add support for perf registers samplingMao Han
This patch implements the perf registers sampling and validation API for the riscv arch. The valid registers and their register ID are defined in perf_regs.h. Perf tool can backtrace in userspace with unwind library and the registers/user stack dump support. Signed-off-by: Mao Han <han_mao@c-sky.com> Cc: Paul Walmsley <paul.walmsley@sifive.com> Cc: Greentime Hu <green.hu@gmail.com> Cc: Palmer Dabbelt <palmer@sifive.com> Cc: linux-riscv <linux-riscv@lists.infradead.org> Cc: Christoph Hellwig <hch@lst.de> Cc: Guo Ren <guoren@kernel.org> Tested-by: Greentime Hu <greentime.hu@sifive.com> [paul.walmsley@sifive.com: minor patch description fix] Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
2019-09-05Convert usage of IN_MULTICAST to ipv4_is_multicastDave Taht
IN_MULTICAST's primary intent is as a uapi macro. Elsewhere in the kernel we use ipv4_is_multicast consistently. This patch unifies linux's multicast checks to use that function rather than this macro. Signed-off-by: Dave Taht <dave.taht@gmail.com> Reviewed-by: Toke Høiland-Jørgensen <toke@toke.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05staging: rtl8723bs: Remove return statement from void functionLeandro Ribeiro
Fix the following checkpatch warning: "WARNING: void function return statements are not generally useful" Signed-off-by: Leandro Ribeiro <leandrohr@riseup.net> Link: https://lore.kernel.org/r/20190904210631.13599-1-leandrohr@riseup.net Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05staging: rtl8192e: remove unnecessary blank lineBeatriz Martins de Carvalho
Fix checkpath error "CHECK: Blank lines aren't necessary after an open brace '{'" in rtllib.h:482. Signed-off-by: Beatriz Martins de Carvalho <martinsdecarvalhobeatriz@gmail.com> Link: https://lore.kernel.org/r/20190904210326.17983-1-martinsdecarvalhobeatriz@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05staging: exfat: Use kmemdup in exfat_symlink()YueHaibing
Use kmemdup rather than duplicating its implementation Signed-off-by: YueHaibing <yuehaibing@huawei.com> Link: https://lore.kernel.org/r/20190905030047.88401-1-yuehaibing@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05staging: exfat: remove unused including <linux/version.h>YueHaibing
Remove including <linux/version.h> that don't need it. Signed-off-by: YueHaibing <yuehaibing@huawei.com> Link: https://lore.kernel.org/r/20190905025623.63210-1-yuehaibing@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05staging: exfat: remove duplicated include from exfat_super.cYueHaibing
Remove duplicated include. Signed-off-by: YueHaibing <yuehaibing@huawei.com> Link: https://lore.kernel.org/r/20190905025608.61884-1-yuehaibing@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-09-05net/sched: cbs: remove redundant assignment to variable port_rateColin Ian King
Variable port_rate is being initialized with a value that is never read and is being re-assigned a little later on. The assignment is redundant and hence can be removed. Addresses-Coverity: ("Unused value") Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05Merge branch 'ionic-Add-ionic-driver'David S. Miller
Shannon Nelson says: ==================== ionic: Add ionic driver This is a patch series that adds the ionic driver, supporting the Pensando ethernet device. In this initial patchset we implement basic transmit and receive. Later patchsets will add more advanced features. Our thanks to Saeed Mahameed, David Miller, Andrew Lunn, Michal Kubecek, Jacub Kicinski, Jiri Pirko, Yunsheng Lin, and the ever present kbuild test robots for their comments and suggestions. New in v7: - stop Tx queue if no descriptor space left after a Tx - return ETIMEDOUT if the module data can't be copied out safely - remove unnecessary synchronize_irq() before free_irq() - use eth_prepare_mac_addr_change() and eth_commit_mac_addr_change() helpers - propagate error out of ionic_dl_info_get() New in v6: - added a new patch with devlink info tags for ASIC and general FW - use the new devlink info tags in the driver - fixed up TxRx cleanup on setup failure - allow for possible 0 address from dma mapping of Tx buffers - remove a few more unnecessary debugfs error checks - use innocuous hardcoded strings in the identify message - removed a couple of unused functions and definitions - fix a leak in the error handling of port_info setup - changed from BUILD_BUG_ON() to static_assert() New in v5: - code reorganized for more sane layout, with a side benefit of getting rid of a "defined but not used" complaint after patch 5 - added "ionic_" prefix to struct definitions and fixed up remaining reverse christmas tree formatting (I think I got them all...) - ndo_open and ndo_stop reworked for better error recovery - interrupt coalescing enabled at driver start - unnecessary log messaging removed from events - double copy added in the module prom read to assure a clean copy - added BQL counting - fixed a TSO unmap issue found in testing - generalize a bit-flag wait with timeout - added devlink into earlier code and dropped patch 19 New in v4: - use devlink struct alloc for ionic device specific struct - add support for devlink_port - fixup devlink fixed vs running version usage - use bitmap_copy() instead of memcpy() for link_ksettings - don't bother to zero out the advertising bits before copying in the support bits - drop unknown xcvr types (will be expanded on later) - flap the connection to force auto-negotiation - use is_power_of_2() rather than open code - simplify set/get_pauseparam use of pause->autoneg - add a couple comments about NIC status data updated in DMA spaces New in v3: - use le32_to_cpu() on queue_count[] values in debugfs - dma_free_coherent() can handle NULL pointers - remove unused SS_TEST from ethtool handlers - one more case of stop the tx ring if there is no room - remove a couple of stray // comments New in v2: - removed debugfs error checking and cut down on debugfs use - remove redundant bounds checking on incoming values for mtu and ethtool - don't alloc rx_filter memory until the match type has been checked - free the ionic struct on remove - simplified link_up and netif_carrier_ok comparison - put stats into ethtool -S, out of debugfs - moved dev_cmd and dev_info dumping to ethtool -d, out of debugfs - added devlink support - used kernel's rss init routines rather than open code - set the Kbuild dependant on 64BIT - cut down on some unnecessary log messaging - cleaned up ionic_get_link_ksettings - cleaned up other little code bits here and there ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add coalesce and other featuresShannon Nelson
Interrupt coalescing, tunable copybreak value, and tx timeout. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add RSS supportShannon Nelson
Add code to manipulate through ethtool the RSS configuration used by the NIC. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add driver statsShannon Nelson
Add in the detailed statistics for ethtool -S that the driver keeps as it processes packets. Display of the additional debug statistics can be enabled through the ethtool priv-flags feature. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add netdev-event handlingShannon Nelson
When the netdev gets a new name from userland, pass that name down to the NIC for internal tracking. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add Tx and Rx handlingShannon Nelson
Add both the Tx and Rx queue setup and handling. The related stats display comes later. Instead of using the generic napi routines used by the slow-path commands, the Tx and Rx paths are simplified and inlined in one file in order to get better compiler optimizations. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add initial ethtool supportShannon Nelson
Add in the basic ethtool callbacks for device information and control. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add async link status check and basic statsShannon Nelson
Add code to handle the link status event, and wire up the basic netdev hardware stats. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add Rx filter and rx_mode ndo supportShannon Nelson
Add the Rx filtering and rx_mode NDO callbacks. Also add the deferred work thread handling needed to manage the filter requests outside of the netif_addr_lock spinlock. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add management of rx filtersShannon Nelson
Set up the infrastructure for managing Rx filters. We can't ask the hardware for what filters it has, so we keep a local list of filters that we've pushed into the HW. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add the basic NDO callbacks for netdev supportShannon Nelson
Set up the initial NDO structure and callbacks for netdev to use, and register the netdev. This will allow us to do a few basic operations on the device, but no traffic yet. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add notifyq supportShannon Nelson
The AdminQ is fine for sending messages and requests to the NIC, but we also need to have events published from the NIC to the driver. The NotifyQ handles this for us, using the same interrupt as AdminQ. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add adminq actionShannon Nelson
Add AdminQ specific message requests and completion handling. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add basic adminq supportShannon Nelson
Most of the NIC configuration happens through the AdminQ message queue. NAPI is used for basic interrupt handling and message queue management. These routines are set up to be shared among different types of queues when used in slow-path handling. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add interrupts and doorbellsShannon Nelson
The ionic interrupt model is based on interrupt control blocks accessed through the PCI BAR. Doorbell registers are used by the driver to signal to the NIC that requests are waiting on the message queues. Interrupts are used by the NIC to signal to the driver that answers are waiting on the completion queues. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-09-05ionic: Add basic lif supportShannon Nelson
The LIF is the Logical Interface, which represents the external connections. The NIC can multiplex many LIFs to a single port, but in most setups, LIF0 is the primary control for the port. Signed-off-by: Shannon Nelson <snelson@pensando.io> Signed-off-by: David S. Miller <davem@davemloft.net>
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