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2018-08-11Merge branch 'cpsw-runtime-pm-fix'David S. Miller
Grygorii Strashko says: ==================== net: ethernet: ti: cpsw: fix runtime pm while add/del reserved vid Here 2 not critical fixes for: - vlan ale table leak while error if deleting vlan (simplifies next fix) - runtime pm while try to set reserved vlan ==================== Reviewed-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-11net: ethernet: ti: cpsw: fix runtime_pm while add/kill vlanIvan Khoronzhuk
It's exclusive with normal behaviour but if try to set vlan to one of the reserved values is made, the cpsw runtime pm is broken. Fixes: a6c5d14f5136 ("drivers: net: cpsw: ndev: fix accessing to suspended device") Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-11net: ethernet: ti: cpsw: clear all entries when delete vidIvan Khoronzhuk
In cases if some of the entries were not found in forwarding table while killing vlan, the rest not needed entries still left in the table. No need to stop, as entry was deleted anyway. So fix this by returning error only after all was cleaned. To implement this, return -ENOENT in cpsw_ale_del_mcast() as it's supposed to be. Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@linaro.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10zram: remove BD_CAP_SYNCHRONOUS_IO with writeback featureMinchan Kim
If zram supports writeback feature, it's no longer a BD_CAP_SYNCHRONOUS_IO device beause zram does asynchronous IO operations for incompressible pages. Do not pretend to be synchronous IO device. It makes the system very sluggish due to waiting for IO completion from upper layers. Furthermore, it causes a user-after-free problem because swap thinks the opearion is done when the IO functions returns so it can free the page (e.g., lock_page_or_retry and goto out_release in do_swap_page) but in fact, IO is asynchronous so the driver could access a just freed page afterward. This patch fixes the problem. BUG: Bad page state in process qemu-system-x86 pfn:3dfab21 page:ffffdfb137eac840 count:0 mapcount:0 mapping:0000000000000000 index:0x1 flags: 0x17fffc000000008(uptodate) raw: 017fffc000000008 dead000000000100 dead000000000200 0000000000000000 raw: 0000000000000001 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: PAGE_FLAGS_CHECK_AT_PREP flag set bad because of flags: 0x8(uptodate) CPU: 4 PID: 1039 Comm: qemu-system-x86 Tainted: G B 4.18.0-rc5+ #1 Hardware name: Supermicro Super Server/X10SRL-F, BIOS 2.0b 05/02/2017 Call Trace: dump_stack+0x5c/0x7b bad_page+0xba/0x120 get_page_from_freelist+0x1016/0x1250 __alloc_pages_nodemask+0xfa/0x250 alloc_pages_vma+0x7c/0x1c0 do_swap_page+0x347/0x920 __handle_mm_fault+0x7b4/0x1110 handle_mm_fault+0xfc/0x1f0 __get_user_pages+0x12f/0x690 get_user_pages_unlocked+0x148/0x1f0 __gfn_to_pfn_memslot+0xff/0x3c0 [kvm] try_async_pf+0x87/0x230 [kvm] tdp_page_fault+0x132/0x290 [kvm] kvm_mmu_page_fault+0x74/0x570 [kvm] kvm_arch_vcpu_ioctl_run+0x9b3/0x1990 [kvm] kvm_vcpu_ioctl+0x388/0x5d0 [kvm] do_vfs_ioctl+0xa2/0x630 ksys_ioctl+0x70/0x80 __x64_sys_ioctl+0x16/0x20 do_syscall_64+0x55/0x100 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Link: https://lore.kernel.org/lkml/0516ae2d-b0fd-92c5-aa92-112ba7bd32fc@contabo.de/ Link: http://lkml.kernel.org/r/20180802051112.86174-1-minchan@kernel.org [minchan@kernel.org: fix changelog, add comment] Link: https://lore.kernel.org/lkml/0516ae2d-b0fd-92c5-aa92-112ba7bd32fc@contabo.de/ Link: http://lkml.kernel.org/r/20180802051112.86174-1-minchan@kernel.org Link: http://lkml.kernel.org/r/20180805233722.217347-1-minchan@kernel.org [akpm@linux-foundation.org: coding-style fixes] Signed-off-by: Minchan Kim <minchan@kernel.org> Reported-by: Tino Lehnig <tino.lehnig@contabo.de> Tested-by: Tino Lehnig <tino.lehnig@contabo.de> Cc: Sergey Senozhatsky <sergey.senozhatsky.work@gmail.com> Cc: Jens Axboe <axboe@kernel.dk> Cc: <stable@vger.kernel.org> [4.15+] Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-08-10mm/memory.c: check return value of ioremap_protjie@chenjie6@huwei.com
ioremap_prot() can return NULL which could lead to an oops. Link: http://lkml.kernel.org/r/1533195441-58594-1-git-send-email-chenjie6@huawei.com Signed-off-by: chen jie <chenjie6@huawei.com> Reviewed-by: Andrew Morton <akpm@linux-foundation.org> Cc: Li Zefan <lizefan@huawei.com> Cc: chenjie <chenjie6@huawei.com> Cc: Yang Shi <shy828301@gmail.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-08-10lib/ubsan: remove null-pointer checksAndrey Ryabinin
With gcc-8 fsanitize=null become very noisy. GCC started to complain about things like &a->b, where 'a' is NULL pointer. There is no NULL dereference, we just calculate address to struct member. It's technically undefined behavior so UBSAN is correct to report it. But as long as there is no real NULL-dereference, I think, we should be fine. -fno-delete-null-pointer-checks compiler flag should protect us from any consequences. So let's just no use -fsanitize=null as it's not useful for us. If there is a real NULL-deref we will see crash. Even if userspace mapped something at NULL (root can do this), with things like SMAP should catch the issue. Link: http://lkml.kernel.org/r/20180802153209.813-1-aryabinin@virtuozzo.com Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-08-10MAINTAINERS: GDB: update e-mail addressKieran Bingham
This entry was created with my personal e-mail address. Update this entry to my open-source kernel.org account. Link: http://lkml.kernel.org/r/20180806143904.4716-4-kieran.bingham@ideasonboard.com Signed-off-by: Kieran Bingham <kbingham@kernel.org> Cc: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2018-08-10bnxt_en: Fix strcpy() warnings in bnxt_ethtool.cVasundhara Volam
This patch fixes following smatch warnings: drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c:2826 bnxt_fill_coredump_seg_hdr() error: strcpy() '"sEgM"' too large for 'seg_hdr->signature' (5 vs 4) drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c:2858 bnxt_fill_coredump_record() error: strcpy() '"cOrE"' too large for 'record->signature' (5 vs 4) drivers/net/ethernet/broadcom/bnxt/bnxt_ethtool.c:2879 bnxt_fill_coredump_record() error: strcpy() 'utsname()->sysname' too large for 'record->os_name' (65 vs 32) Fixes: 6c5657d085ae ("bnxt_en: Add support for ethtool get dump.") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Vasundhara Volam <vasundhara-v.volam@broadcom.com> Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10liquidio: copperhead LED identificationRaghu Vatsavayi
Add LED identification support for liquidio TP copperhead cards. Signed-off-by: Raghu Vatsavayi <raghu.vatsavayi@cavium.com> Acked-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>
2018-08-10qed/qede: qede_setup_tc() can be statickbuild test robot
Fixes: 5e7baf0fcb2a ("qed/qede: Multi CoS support.") Signed-off-by: kbuild test robot <fengguang.wu@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10mlxsw: core: remove unnecessary function mlxsw_core_driver_putYueHaibing
The function mlxsw_core_driver_put only traverse mlxsw_core_driver_list to find the matched mlxsw_driver,but never used it. So it can be removed safely. Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10net: mvneta: fix mvneta_config_rss on armada 3700Jisheng Zhang
The mvneta Ethernet driver is used on a few different Marvell SoCs. Some SoCs have per cpu interrupts for Ethernet events, the driver uses a per CPU napi structure for this case. Some SoCs such as armada 3700 have a single interrupt for Ethernet events, the driver uses a global napi structure for this case. Current mvneta_config_rss() always operates the per cpu napi structure. Fix it by operating a global napi for "single interrupt" case, and per cpu napi structure for remaining cases. Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com> Fixes: 2636ac3cc2b4 ("net: mvneta: Add network support for Armada 3700 SoC") Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10net/smc: send response to test link signalUrsula Braun
With SMC-D z/OS sends a test link signal every 10 seconds. Linux is supposed to answer, otherwise the SMC-D connection breaks. Signed-off-by: Ursula Braun <ubraun@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10Merge branch 'r8169-smaller-improvements'David S. Miller
Heiner Kallweit says: ==================== r8169: smaller improvements This series includes smaller improvements, no functional change intended. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10r8169: don't configure max jumbo frame size per chip versionHeiner Kallweit
We don't have to configure the max jumbo frame size per chip (sub-)version. It can be easily determined based on the chip family. And new members of the RTL8168 family (if there are any) should be automatically covered. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10r8169: don't configure csum function per chip versionHeiner Kallweit
We don't have to configure the csum function per chip (sub-)version. The distinction is simple, versions RTL8102e and from RTL8168c onwards support csum_v2. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10r8169: simplify interrupt handlerHeiner Kallweit
Simplify the interrupt handler a little and make it better readable. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10r8169: don't include asm headers directlyHeiner Kallweit
The asm headers shouldn't be included directly. asm/irq.h is implicitly included by linux/interrupt.h, and instead of asm/io.h include linux/io.h. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10r8169: remove version infoHeiner Kallweit
The version number hasn't changed for ages and in general I doubt it provides any benefit. The message in rtl_init_one() may even be misleading because it's printed also if something fails in probe. Therefore let's remove the version information. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10Merge branch 'for-upstream' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next Johan Hedberg says: ==================== pull request: bluetooth-next 2018-08-10 Here's one more (most likely last) bluetooth-next pull request for the 4.19 kernel. - Added support for MediaTek serial Bluetooth devices - Initial skeleton for controller-side address resolution support - Fix BT_HCIUART_RTL related Kconfig dependencies - A few other minor fixes/cleanups Please let me know if there are any issues pulling. Thanks. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-nextDavid S. Miller
Pablo Neira Ayuso says: ==================== Netfilter updates for net-next The following batch contains netfilter updates for your net-next tree: 1) Expose NFT_OSF_MAXGENRELEN maximum OS name length from the new OS passive fingerprint matching extension, from Fernando Fernandez. 2) Add extension to support for fine grain conntrack timeout policies from nf_tables. As preparation works, this patchset moves nf_ct_untimeout() to nf_conntrack_timeout and it also decouples the timeout policy from the ctnl_timeout object, most work done by Harsha Sharma. 3) Enable connection tracking when conntrack helper is in place. 4) Missing enumeration in uapi header when splitting original xt_osf to nfnetlink_osf, also from Fernando. 5) Fix a sparse warning due to incorrect typing in the nf_osf_find(), from Wei Yongjun. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10cxgb4: add support to display DCB infoGanesh Goudar
display Data Center bridging information in debug fs. Signed-off-by: Casey Leedom <leedom@chelsio.com> Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10net: chelsio: cxgb2: remove unused array pci_speedColin Ian King
Array pci_speed is defined but is never used hence it is redundant and can be removed. Cleans up clang warning: warning: 'pci_speed' defined but not used [-Wunused-const-variable=] Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10mlxsw: remove unused arrays mlxsw_i2c_driver_name and mlxsw_pci_driver_nameColin Ian King
Arrays mlxsw_i2c_driver_name and mlxsw_pci_driver_name are defined but never used hence they are redundant and can be removed. Cleans up clang warnings: warning: 'mlxsw_i2c_driver_name' defined but not used warning: 'mlxsw_pci_driver_name' defined but not used Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10net: Provide stub for __netif_set_xps_queue if there is no CONFIG_XPSKrzysztof Kozlowski
Building virtio_net driver without CONFIG_XPS fails with: drivers/net/virtio_net.c: In function ‘virtnet_set_affinity’: drivers/net/virtio_net.c:1910:3: error: implicit declaration of function ‘__netif_set_xps_queue’ [-Werror=implicit-function-declaration] __netif_set_xps_queue(vi->dev, mask, i, false); ^ Fixes: 4d99f6602cb5 ("net: allow to call netif_reset_xps_queues() under cpus_read_lock") Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-10Merge branch 'i2c/for-current' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c fix from Wolfram Sang: "A single driver bugfix for I2C. The bug was found by systematically stress testing the driver, so I am confident to merge it that late in the cycle although it is probably unusually large" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: xlp9xx: Fix case where SSIF read transaction completes early
2018-08-10Bluetooth: Add definitions for LE set address resolutionAnkit Navik
Add the definitions for LE address resolution enable HCI commands. When the LE address resolution enable gets changed via HCI commands make sure that flag gets updated. Signed-off-by: Ankit Navik <ankit.p.navik@intel.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2018-08-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller
Daniel Borkmann says: ==================== pull-request: bpf 2018-08-10 The following pull-request contains BPF updates for your *net* tree. The main changes are: 1) Fix cpumap and devmap on teardown as they're under RCU context and won't have same assumption as running under NAPI protection, from Jesper. 2) Fix various sockmap bugs in bpf_tcp_sendmsg() code, e.g. we had a bug where socket error was not propagated correctly, from Daniel. 3) Fix incompatible libbpf header license for BTF code and match it before it gets officially released with the rest of libbpf which is LGPL-2.1, from Martin. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09cxgb4: update 1.20.8.0 as the latest firmware supportedGanesh Goudar
Change t4fw_version.h to update latest firmware version number to 1.20.8.0. Signed-off-by: Ganesh Goudar <ganeshgr@chelsio.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09net: allow to call netif_reset_xps_queues() under cpus_read_lockAndrei Vagin
The definition of static_key_slow_inc() has cpus_read_lock in place. In the virtio_net driver, XPS queues are initialized after setting the queue:cpu affinity in virtnet_set_affinity() which is already protected within cpus_read_lock. Lockdep prints a warning when we are trying to acquire cpus_read_lock when it is already held. This patch adds an ability to call __netif_set_xps_queue under cpus_read_lock(). Acked-by: Jason Wang <jasowang@redhat.com> ============================================ WARNING: possible recursive locking detected 4.18.0-rc3-next-20180703+ #1 Not tainted -------------------------------------------- swapper/0/1 is trying to acquire lock: 00000000cf973d46 (cpu_hotplug_lock.rw_sem){++++}, at: static_key_slow_inc+0xe/0x20 but task is already holding lock: 00000000cf973d46 (cpu_hotplug_lock.rw_sem){++++}, at: init_vqs+0x513/0x5a0 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(cpu_hotplug_lock.rw_sem); lock(cpu_hotplug_lock.rw_sem); *** DEADLOCK *** May be due to missing lock nesting notation 3 locks held by swapper/0/1: #0: 00000000244bc7da (&dev->mutex){....}, at: __driver_attach+0x5a/0x110 #1: 00000000cf973d46 (cpu_hotplug_lock.rw_sem){++++}, at: init_vqs+0x513/0x5a0 #2: 000000005cd8463f (xps_map_mutex){+.+.}, at: __netif_set_xps_queue+0x8d/0xc60 v2: move cpus_read_lock() out of __netif_set_xps_queue() Cc: "Nambiar, Amritha" <amritha.nambiar@intel.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: Jason Wang <jasowang@redhat.com> Fixes: 8af2c06ff4b1 ("net-sysfs: Add interface for Rx queue(s) map per Tx queue") Signed-off-by: Andrei Vagin <avagin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09net: phy: sftp: print debug message with text, not numbersAndrew Lunn
Convert the state numbers, device state, etc from numbers to strings when printing debug messages. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Acked-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09ethernet/qlogic: remove unused array msi_tgt_statusColin Ian King
Array msi_tgt_status is defined but never used, hence it is redundant and can be removed. Cleans up clang warning: warning: 'msi_tgt_status' defined but not used [-Wunused-const-variable=] Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09net: dsa: rtl8366rb: Support port 4 (WAN)Linus Walleij
The totally undocumented IO mode needs to be set to enumerator 0 to enable port 4 also known as WAN in most configurations, for ordinary traffic. The 3 bits in the register come up as 010 after reset, but need to be set to 000. The Realtek source code contains a name for these bits, but no explanation of what the 8 different IO modes may be. Set it to zero for the time being and drop a comment so people know what is going on if they run into trouble. This "mode zero" works fine with the D-Link DIR-685 with RTL8366RB. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09mlxsw: spectrum_flower: use PTR_ERR_OR_ZERO()YueHaibing
Fix ptr_ret.cocci warnings: drivers/net/ethernet/mellanox/mlxsw/spectrum_flower.c:543:1-3: WARNING: PTR_ERR_OR_ZERO can be used Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09net: sched: fix block->refcnt decrementJiri Pirko
Currently the refcnt is never decremented in case the value is not 1. Fix it by adding decrement in case the refcnt is not 1. Reported-by: Vlad Buslov <vladbu@mellanox.com> Fixes: f71e0ca4db18 ("net: sched: Avoid implicit chain 0 creation") Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09decnet: fix using plain integer as NULL warningYueHaibing
Fixes the following sparse warning: net/decnet/dn_route.c:407:30: warning: Using plain integer as NULL pointer net/decnet/dn_route.c:1923:22: warning: Using plain integer as NULL pointer Signed-off-by: YueHaibing <yuehaibing@huawei.com> Reviewed-by: Kees Cook <keescook@chromium.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09net: skbuff.h: fix using plain integer as NULL warningYueHaibing
Fixes the following sparse warning: ./include/linux/skbuff.h:2365:58: warning: Using plain integer as NULL pointer Signed-off-by: YueHaibing <yuehaibing@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09be2net: Use Kconfig flag to support for enabling/disabling adaptersPetr Oros
Add flags to enable/disable supported chips in be2net. With disable support are removed coresponding PCI IDs and also codepaths with [BE2|BE3|BEx|lancer|skyhawk]_chip checks. Disable chip will reduce module size by: BE2 ~2kb BE3 ~3kb Lancer ~10kb Skyhawk ~9kb When enable skyhawk only it will reduce module size by ~20kb New help style in Kconfig Reviewed-by: Ivan Vecera <ivecera@redhat.com> Signed-off-by: Petr Oros <poros@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09net: ipv6_gre: Fix GRO to work on IPv6 over GRE tapMaria Pasechnik
IPv6 GRO over GRE tap is not working while GRO is not set over the native interface. gro_list_prepare function updates the same_flow variable of existing sessions to 1 if their mac headers match the one of the incoming packet. same_flow is used to filter out non-matching sessions and keep potential ones for aggregation. The number of bytes to compare should be the number of bytes in the mac headers. In gro_list_prepare this number is set to be skb->dev->hard_header_len. For GRE interfaces this hard_header_len should be as it is set in the initialization process (when GRE is created), it should not be overridden. But currently it is being overridden by the value that is actually supposed to represent the needed_headroom. Therefore, the number of bytes compared in order to decide whether the the mac headers are the same is greater than the length of the headers. As it's documented in netdevice.h, hard_header_len is the maximum hardware header length, and needed_headroom is the extra headroom the hardware may need. hard_header_len is basically all the bytes received by the physical till layer 3 header of the packet received by the interface. For example, if the interface is a GRE tap then the needed_headroom should be the total length of the following headers: IP header of the physical, GRE header, mac header of GRE. It is often used to calculate the MTU of the created interface. This patch removes the override of the hard_header_len, and assigns the calculated value to needed_headroom. This way, the comparison in gro_list_prepare is really of the mac headers, and if the packets have the same mac headers the same_flow will be set to 1. Performance testing: 45% higher bandwidth. Measuring bandwidth of single-stream IPv4 TCP traffic over IPv6 GRE tap while GRO is not set on the native. NIC: ConnectX-4LX Before (GRO not working) : 7.2 Gbits/sec After (GRO working): 10.5 Gbits/sec Signed-off-by: Maria Pasechnik <mariap@mellanox.com> Signed-off-by: Tariq Toukan <tariqt@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09Merge branch 'qed-Enhancements'David S. Miller
Manish Chopra says: ==================== qed*: Enhancements This patch series adds following support in drivers - 1. Egress mqprio offload. 2. Add destination IP based flow profile. 3. Ingress flower offload (for drop action). Please consider applying this series to "net-next". ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09qede: Ingress tc flower offload (drop action) support.Manish Chopra
The main motive of this patch is to lay down driver's tc offload infrastructure in place. With these changes tc can offload various supported flow profiles (4 tuples, src-ip, dst-ip, l4 port) for the drop action. Dropped flows statistic is a global counter for all the offloaded flows for drop action and is populated in ethtool statistics as common "gft_filter_drop". Examples - tc qdisc add dev p4p1 ingress tc filter add dev p4p1 protocol ipv4 parent ffff: flower \ skip_sw ip_proto tcp dst_ip 192.168.40.200 action drop tc filter add dev p4p1 protocol ipv4 parent ffff: flower \ skip_sw ip_proto udp src_ip 192.168.40.100 action drop tc filter add dev p4p1 protocol ipv4 parent ffff: flower \ skip_sw ip_proto tcp src_ip 192.168.40.100 dst_ip 192.168.40.200 \ src_port 453 dst_port 876 action drop tc filter add dev p4p1 protocol ipv4 parent ffff: flower \ skip_sw ip_proto tcp dst_port 98 action drop Signed-off-by: Manish Chopra <manish.chopra@cavium.com> Signed-off-by: Ariel Elior <ariel.elior@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09qede: Add destination ip based flow profile.Manish Chopra
This patch adds support for dropping and redirecting the flows based on destination IP in the packet. This also moves the profile mode settings in their own functions which can be used through tc flows in successive patch. For example - ethtool -N p5p1 flow-type tcp4 dst-ip 192.168.40.100 action -1 ethtool -N p5p1 flow-type udp4 dst-ip 192.168.50.100 action 1 ethtool -N p5p1 flow-type tcp4 dst-ip 192.168.60.100 action 0x100000000 Signed-off-by: Manish Chopra <manish.chopra@cavium.com> Signed-off-by: Ariel Elior <ariel.elior@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09qed/qede: Multi CoS support.Manish Chopra
This patch adds support for tc mqprio offload, using this different traffic classes on the adapter can be utilized based on configured priority to tc map. For example - tc qdisc add dev eth0 root mqprio num_tc 4 map 0 1 2 3 This will cause SKBs with priority 0,1,2,3 to transmit over tc 0,1,2,3 hardware queues respectively. Signed-off-by: Manish Chopra <manish.chopra@cavium.com> Signed-off-by: Ariel Elior <ariel.elior@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09Merge branch 's390-qeth-next'David S. Miller
Julian Wiedmann says: ==================== s390/qeth: updates 2018-08-09 one more set of patches for net-next. This is all sorts of cleanups and more refactoring on the way to using netdev_priv. Please apply. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09s390/qeth: use true and false for boolean valuesGustavo A. R. Silva
Return statements in functions returning bool should use true or false instead of an integer value. This issue was detected with the help of Coccinelle. Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com> Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09s390/qeth: don't restrict qeth_card to DMA memoryJulian Wiedmann
Allocating the main qeth_card struct with GFP_DMA blocks us from moving it into netdev_priv(). But the only reason why we need DMA memory is the ccw1 structs embedded into each ccw channel. So extract those into separate allocations, like we already do for the cmd buffers. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09s390/qeth: clean up card initializationJulian Wiedmann
The qeth_card struct is kzalloc-ed, so remove all the redundant 0-initializations. While at it, split up what's left of qeth_determine_card_type(). Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09s390/qeth: do basic setup for data channelJulian Wiedmann
The data channel currently doesn't need a setup operation, because we don't use pre-allocated cmd buffers for its IO. But subsequent changes will introduce further setup that also applies to the data channel. This refactors things a bit, so that the new stuff can then be automatically applied to all channels. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09s390/qeth: use qeth_setup_ccw() to set up all CCWsJulian Wiedmann
Re-work the helper a little bit, so that it can be used for all CCWs that qeth issues. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2018-08-09s390/qeth: reduce hard-coded access to ccw channelsJulian Wiedmann
Where possible use accessor macros and local pointers to access the ccw channels. This makes it less likely to miss a spot. Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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