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* net: phy: Fix truncation of large IRQ numbers in phy_attached_print()Geert Uytterhoeven2017-09-221-1/+1
| | | | | | | | | | | | | Given NR_IRQS is 2048 on sparc64, and even 32784 on alpha, 3 digits is not enough to represent interrupt numbers on all architectures. Hence PHY interrupt numbers may be truncated during printing. Increase the buffer size from 4 to 8 bytes to fix this. Fixes: 5e369aefdce4818c ("net: stmmac: Delete dead code for MDIO registration") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: stmmac: Cocci spatch "of_table"Thomas Meyer2017-09-221-0/+1
| | | | | | | | Make sure (of/i2c/platform)_device_id tables are NULL terminated. Found by coccinelle spatch "misc/of_table.cocci" Signed-off-by: Thomas Meyer <thomas@m3y3r.de> Signed-off-by: David S. Miller <davem@davemloft.net>
* lan78xx: Use default values loaded from EEPROM/OTP after resetNisar Sayed2017-09-221-1/+0
| | | | | | | | | | | | | Use default value of auto duplex and auto speed values loaded from EEPROM/OTP after reset. The LAN78xx allows platform configurations to be loaded from EEPROM/OTP. Ex: When external phy is connected, the MAC can be configured to have correct auto speed, auto duplex, auto polarity configured from the EEPROM/OTP. Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver") Signed-off-by: Nisar Sayed <Nisar.Sayed@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* lan78xx: Allow EEPROM write for less than MAX_EEPROM_SIZENisar Sayed2017-09-221-5/+4
| | | | | | | | Allow EEPROM write for less than MAX_EEPROM_SIZE Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver") Signed-off-by: Nisar Sayed <Nisar.Sayed@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* lan78xx: Fix for eeprom read/write when device auto suspendNisar Sayed2017-09-221-4/+20
| | | | | | | | Fix for eeprom read/write when device auto suspend Fixes: 55d7de9de6c3 ("Microchip's LAN7800 family USB 2/3 to 10/100/1000 Ethernet device driver") Signed-off-by: Nisar Sayed <Nisar.Sayed@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: phy: Keep reporting transceiver typeFlorian Fainelli2017-09-221-1/+2
| | | | | | | | | | | | | With commit 2d55173e71b0 ("phy: add generic function to support ksetting support"), we lost the ability to report the transceiver type like we used to. Now that we have added back the transceiver type to ethtool_link_settings, we can report it back like we used to and have no loss of information. Fixes: 3f1ac7a700d0 ("net: ethtool: add new ETHTOOL_xLINKSETTINGS API") Fixes: 2d55173e71b0 ("phy: add generic function to support ksetting support") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: qcom/emac: add software control for pause frame modeTimur Tabi2017-09-224-0/+58
| | | | | | | | | | | | | The EMAC has the option of sending only a single pause frame when flow control is enabled and the RX queue is full. Although sending only one pause frame has little value, this would allow admins to enable automatic flow control without having to worry about the EMAC flooding nearby switches with pause frames if the kernel hangs. The option is enabled by using the single-pause-mode private flag. Signed-off-by: Timur Tabi <timur@codeaurora.org> Signed-off-by: David S. Miller <davem@davemloft.net>
* hv_netvsc: fix send buffer failure on MTU changeAlex Ng2017-09-223-5/+12
| | | | | | | | | | | | | | | | | | | | | | If MTU is changed the host would reject the send buffer change. This problem is result of recent change to allow changing send buffer size. Every time we change the MTU, we store the previous net_device section count before destroying the buffer, but we don’t store the previous section size. When we reinitialize the buffer, its size is calculated by multiplying the previous count and previous size. Since we continuously increase the MTU, the host returns us a decreasing count value while the section size is reinitialized to 1728 bytes every time. This eventually leads to a condition where the calculated buf_size is so small that the host rejects it. Fixes: 8b5327975ae1 ("netvsc: allow controlling send/recv buffer size") Signed-off-by: Alex Ng <alexng@microsoft.com> Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: Fix for pri to tc mapping in TMYunsheng Lin2017-09-213-9/+12
| | | | | | | | | | Current mapping between pri and tc is one to one, so user can't map multi priorities to the same tc. This patch changes the mapping to many to one. Fixes: 848440544b41f ("net: hns3: Add support of TX Scheduler & Shaper to HNS3 driver") Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: Fix for setting rss_size incorrectlyYunsheng Lin2017-09-213-40/+38
| | | | | | | | | | | | | | rss_size is 1, 2, 4, 8, 16, 32, 64, 128, but acutal tc queue size can be any u16 less than 128. If tc queue size is 5, we set the rss_size to 8, indirection table will be used to limit the size of actual queue size. It may cause dropping of receiving packet in hardware if rss_size is not set correctly. For now, each TC has the same rss size. Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support") Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: Fix typo error for feild in hclge_tmYunsheng Lin2017-09-212-12/+12
| | | | | | | | This patch fixes a typo error for feild, which should be field. Fixes: 848440544b41f ("net: hns3: Add support of TX Scheduler & Shaper to HNS3 driver") Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: Fix for rx priv buf allocation when DCB is not supportedYunsheng Lin2017-09-211-0/+10
| | | | | | | | | | | | When hdev doesn't support DCB, rx private buffer is not allocated, otherwise there is not enough buffer for rx shared buffer, causing buffer allocation process to fail. This patch fixes by checking the dcb capability in hclge_rx_buffer_calc. Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support") Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: Fix for rx_priv_buf_alloc not setting rx shared bufferYunsheng Lin2017-09-212-1/+6
| | | | | | | | | | | | | rx_priv_buf_alloc is used to tell hardware how much buffer is used for rx direction, right now only the private buffer is assigned. For ae_dev that doesn't support DCB, private rx buffer is assigned to zero, only shared rx buffer is used. So not setting the shared rx buffer cause dropping of packet in SSU. Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support") Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: Fix for not setting rx private buffer size to zeroYunsheng Lin2017-09-211-2/+14
| | | | | | | | | | | | When rx private buffer is disabled, there may be some case that the rx private buffer is not set to zero, which may cause buffer allocation process to fail. This patch fixes this problem by setting priv->enable to 0 and priv->buf_size to zero when rx private buffer is disabled. Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support") Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: Fix for DEFAULT_DV when dev doesn't support DCBYunsheng Lin2017-09-212-1/+6
| | | | | | | | | | | When ae_dev doesn't support DCB, DEFAULT_DV must be set to a lower value, otherwise the buffer allocation process will fail. This patch fix it by setting it to 30K bytes. Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support") Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: Fix initialization when cmd is not supportedYunsheng Lin2017-09-214-16/+31
| | | | | | | | | | | | | When ae_dev doesn't support DCB, rx_priv_wl_config, common_thrd_config and tm_qs_bp_cfg can't be called, otherwise cmd return fail, which causes the hclge module initialization process to fail. This patch fix it by adding a DCB capability flag to check if the ae_dev support DCB. Fixes: 46a3df9f9718 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support") Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: Cleanup for ROCE capability flag in ae_devYunsheng Lin2017-09-213-27/+19
| | | | | | | | | | | | This patch add the ROCE supported flag in the driver_data field of pci_device_id, delete roce_pci_tbl and change HNAE_DEV_SUPPORT_ROCE_B to HNAE3_DEV_SUPPORT_ROCE_B. This cleanup is done in order to support adding capability in pci_device_id and to fix initialization failure when cmd is not supported. Signed-off-by: Yunsheng Lin <linyunsheng@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: fec: return IRQ_HANDLED if fec_ptp_check_pps_event handled itTroy Kisky2017-09-211-2/+2
| | | | | | | | | fec_ptp_check_pps_event will return 1 if FEC_T_TF_MASK caused an interrupt. Don't return IRQ_NONE in this case. Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com> Acked-by: Fugang Duan <fugang.duan@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: fec: remove unused interrupt FEC_ENET_TS_TIMERTroy Kisky2017-09-211-2/+2
| | | | | | | | | FEC_ENET_TS_TIMER is not checked in the interrupt routine so there is no need to enable it. Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com> Acked-by: Fugang Duan <fugang.duan@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: fec: only check queue 0 if RXF_0/TXF_0 interrupt is setTroy Kisky2017-09-211-2/+2
| | | | | | | | | Before queue 0 was always checked if any queue caused an interrupt. It is better to just mark queue 0 if queue 0 has caused an interrupt. Signed-off-by: Troy Kisky <troy.kisky@boundarydevices.com> Acked-by: Fugang Duan <Fugang.duan@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: emac: Fix napi poll list corruptionChristian Lamparter2017-09-201-2/+1
| | | | | | | | | | | | | | | | | | | | | | | This patch is pretty much a carbon copy of commit 3079c652141f ("caif: Fix napi poll list corruption") with "caif" replaced by "emac". The commit d75b1ade567f ("net: less interrupt masking in NAPI") breaks emac. It is now required that if the entire budget is consumed when poll returns, the napi poll_list must remain empty. However, like some other drivers emac tries to do a last-ditch check and if there is more work it will call napi_reschedule and then immediately process some of this new work. Should the entire budget be consumed while processing such new work then we will violate the new caller contract. This patch fixes this by not touching any work when we reschedule in emac. Signed-off-by: Christian Lamparter <chunkeey@googlemail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: Fixes the premature exit of loop when matching clientsLipeng2017-09-201-34/+9
| | | | | | | | | | | | | | When register/unregister ae_dev, ae_dev should match all client in the client_list. Enet and roce can co-exists together so we should continue checking for enet and roce presence together. So break should not be there. Above caused problems in loading and unloading of modules. Fixes: 38eddd126772 ("net: hns3: Add support of the HNAE3 framework") Signed-off-by: Lipeng <lipeng321@huawei.com> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: Fixes the default VLAN-id of PFLipeng2017-09-201-1/+5
| | | | | | | | | | | | | | When there is no vlan id in the packets, hardware will treat the vlan id as 0 and look for the mac_vlan table. This patch set the default vlan id of PF as 0. Without this config, it will fail when look for mac_vlan table, and hardware will drop packets. Fixes: 6427264ef330 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support") Signed-off-by: Mingguang Qu <qumingguang@huawei.com> Signed-off-by: Lipeng <lipeng321@huawei.com> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: Fixes the ether address copy with appropriate APISalil Mehta2017-09-201-2/+1
| | | | | | | | | | This patch replaces the ethernet address copy instance with more appropriate ether_addr_copy() function. Fixes: 6427264ef330 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support") Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: Fixes the initialization of MAC address in hardwareLipeng2017-09-201-3/+4
| | | | | | | | | | | This patch fixes the initialization of MAC address, fetched from HNS3 firmware i.e. when it is not randomly generated, to the HNS3 hardware. Fixes: ca60906d2795 ("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC") Signed-off-by: Lipeng <lipeng321@huawei.com> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: Fixes ring-to-vector map-and-unmap commandLipeng2017-09-202-2/+14
| | | | | | | | | | | | | This patch fixes the vector-to-ring map and unmap command and adds INT_GL(for, Gap Limiting Interrupts) and VF id to it as required by the hardware interface. Fixes: 6427264ef330 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support") Signed-off-by: Lipeng <lipeng321@huawei.com> Signed-off-by: Mingguang Qu <qumingguang@huawei.com> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: Fixes the command used to unmap ring from vectorLipeng2017-09-201-1/+1
| | | | | | | | | | | This patch fixes the IMP command being used to unmap the vector from the corresponding ring. Fixes: 6427264ef330 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support") Signed-off-by: Lipeng <lipeng321@huawei.com> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: hns3: Fixes initialization of phy address from firmwareLipeng2017-09-201-0/+1
| | | | | | | | | | | | Default phy address of every port is 0. Therefore, phy address for each port need to be fetched from firmware and device initialized with fetched non-default phy address. Fixes: 6427264ef330 ("net: hns3: Add HNS3 Acceleration Engine & Compatibility Layer Support") Signed-off-by: Lipeng <lipeng321@huawei.com> Signed-off-by: Salil Mehta <salil.mehta@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: phy: Kconfig: Fix PHY infrastructure menu in menuconfigJerome Brunet2017-09-191-9/+9
| | | | | | | | | | | | | | | | Since the integration of PHYLINK, the configuration option which used to be under the PHY infrastructure menu in menuconfig ended up one level up (the network device driver section) By placing PHYLINK option right after PHYLIB entry, it broke the way Kconfig used to build the menu. See kconfig-language.txt, section "Menu structure", 2nd method. This is fixed by placing the PHYLINK option just before PHYLIB. Fixes: 9525ae83959b ("phylink: add phylink infrastructure") Signed-off-by: Jerome Brunet <jbrunet@baylibre.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: systemport: Fix 64-bit statistics dependencyFlorian Fainelli2017-09-191-20/+32
| | | | | | | | | | | | | | | | | | | | There are several problems with commit 10377ba7673d ("net: systemport: Support 64bit statistics", first one got fixed in 7095c973453e ("net: systemport: Fix 64-bit stats deadlock"). The second problem is that this specific code updates the stats64.tx_{packets,bytes} from ndo_get_stats64() and that is what we are returning to ethtool -S. If we are not running a tool that involves calling ndo_get_stats64(), then we won't get updated ethtool stats. The solution to this is to update the stats from both call sites, factoring that into a specific function, While at it, don't just check the sizeof() but also the type of the statistics in order to use the 64-bit stats seqlock. Fixes: 10377ba7673d ("net: systemport: Support 64bit statistics") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* 8139too: revisit napi_complete_done() usageEric Dumazet2017-09-191-2/+3
| | | | | | | | | | | | | | | It seems we have to be more careful in napi_complete_done() use. This patch is not a revert, as it seems we can avoid bug that Ville reported by moving the napi_complete_done() test in the spinlock section. Many thanks to Ville for detective work and all tests. Fixes: 617f01211baf ("8139too: use napi_complete_done()") Reported-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Tested-by: Ville Syrjälä <ville.syrjala@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* bnxt_en: check for ingress qdisc in flower offloadSathya Perla2017-09-191-0/+4
| | | | | | | | | | Check for ingress-only qdisc for flower offload, as other qdiscs are not supported for flower offload. Suggested-by: Jiri Pirko <jiri@resnulli.us> Signed-off-by: Sathya Perla <sathya.perla@broadcom.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* net: phy: Fix mask value write on gmii2rgmii converter speed registerFahad Kunnathadi2017-09-191-1/+1
| | | | | | | | | | | | | | | | To clear Speed Selection in MDIO control register(0x10), ie, clear bits 6 and 13 to zero while keeping other bits same. Before AND operation,The Mask value has to be perform with bitwise NOT operation (ie, ~ operator) This patch clears current speed selection before writing the new speed settings to gmii2rgmii converter Fixes: f411a6160bd4 ("net: phy: Add gmiitorgmii converter support") Signed-off-by: Fahad Kunnathadi <fahad.kunnathadi@dexceldesigns.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2017-09-1623-116/+293
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking fixes from David Miller: 1) Fix hotplug deadlock in hv_netvsc, from Stephen Hemminger. 2) Fix double-free in rmnet driver, from Dan Carpenter. 3) INET connection socket layer can double put request sockets, fix from Eric Dumazet. 4) Don't match collect metadata-mode tunnels if the device is down, from Haishuang Yan. 5) Do not perform TSO6/GSO on ipv6 packets with extensions headers in be2net driver, from Suresh Reddy. 6) Fix scaling error in gen_estimator, from Eric Dumazet. 7) Fix 64-bit statistics deadlock in systemport driver, from Florian Fainelli. 8) Fix use-after-free in sctp_sock_dump, from Xin Long. 9) Reject invalid BPF_END instructions in verifier, from Edward Cree. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (43 commits) mlxsw: spectrum_router: Only handle IPv4 and IPv6 events Documentation: link in networking docs tcp: fix data delivery rate bpf/verifier: reject BPF_ALU64|BPF_END sctp: do not mark sk dumped when inet_sctp_diag_fill returns err sctp: fix an use-after-free issue in sctp_sock_dump netvsc: increase default receive buffer size tcp: update skb->skb_mstamp more carefully net: ipv4: fix l3slave check for index returned in IP_PKTINFO net: smsc911x: Quieten netif during suspend net: systemport: Fix 64-bit stats deadlock net: vrf: avoid gcc-4.6 warning qed: remove unnecessary call to memset tg3: clean up redundant initialization of tnapi tls: make tls_sw_free_resources static sctp: potential read out of bounds in sctp_ulpevent_type_enabled() MAINTAINERS: review Renesas DT bindings as well net_sched: gen_estimator: fix scaling error in bytes/packets samples nfp: wait for the NSP resource to appear on boot nfp: wait for board state before talking to the NSP ...
| * mlxsw: spectrum_router: Only handle IPv4 and IPv6 eventsIdo Schimmel2017-09-161-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The driver doesn't support events from address families other than IPv4 and IPv6, so ignore them. Otherwise, we risk queueing a work item before it's initialized. This can happen in case a VRF is configured when MROUTE_MULTIPLE_TABLES is enabled, as the VRF driver will try to add an l3mdev rule for the IPMR family. Fixes: 65e65ec137f4 ("mlxsw: spectrum_router: Don't ignore IPv6 notifications") Signed-off-by: Ido Schimmel <idosch@mellanox.com> Reported-by: Andreas Rammhold <andreas@rammhold.de> Reported-by: Florian Klink <flokli@flokli.de> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * netvsc: increase default receive buffer sizeStephen Hemminger2017-09-151-1/+1
| | | | | | | | | | | | | | | | | | | | | | The default receive buffer size was reduced by recent change to a value which was appropriate for 10G and Windows Server 2016. But the value is too small for full performance with 40G on Azure. Increase the default back to maximum supported by host. Fixes: 8b5327975ae1 ("netvsc: allow controlling send/recv buffer size") Signed-off-by: Stephen Hemminger <sthemmin@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: smsc911x: Quieten netif during suspendGeert Uytterhoeven2017-09-151-1/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | If the network interface is kept running during suspend, the net core may call net_device_ops.ndo_start_xmit() while the Ethernet device is still suspended, which may lead to a system crash. E.g. on sh73a0/kzm9g and r8a73a4/ape6evm, the external Ethernet chip is driven by a PM controlled clock. If the Ethernet registers are accessed while the clock is not running, the system will crash with an imprecise external abort. As this is a race condition with a small time window, it is not so easy to trigger at will. Using pm_test may increase your chances: # echo 0 > /sys/module/printk/parameters/console_suspend # echo platform > /sys/power/pm_test # echo mem > /sys/power/state To fix this, make sure the network interface is quietened during suspend. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: systemport: Fix 64-bit stats deadlockFlorian Fainelli2017-09-151-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We can enter a deadlock situation because there is no sufficient protection when ndo_get_stats64() runs in process context to guard against RX or TX NAPI contexts running in softirq, this can lead to the following lockdep splat and actual deadlock was experienced as well with an iperf session in the background and a while loop doing ifconfig + ethtool. [ 5.780350] ================================ [ 5.784679] WARNING: inconsistent lock state [ 5.789011] 4.13.0-rc7-02179-g32fae27c725d #70 Not tainted [ 5.794561] -------------------------------- [ 5.798890] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. [ 5.804971] swapper/0/0 [HC0[0]:SC1[1]:HE0:SE0] takes: [ 5.810175] (&syncp->seq#2){+.?...}, at: [<c0768a28>] bcm_sysport_tx_reclaim+0x30/0x54 [ 5.818327] {SOFTIRQ-ON-W} state was registered at: [ 5.823278] bcm_sysport_get_stats64+0x17c/0x258 [ 5.828053] dev_get_stats+0x38/0xac [ 5.831776] rtnl_fill_stats+0x30/0x118 [ 5.835761] rtnl_fill_ifinfo+0x538/0xe24 [ 5.839921] rtmsg_ifinfo_build_skb+0x6c/0xd8 [ 5.844430] rtmsg_ifinfo_event.part.5+0x14/0x44 [ 5.849201] rtmsg_ifinfo+0x20/0x28 [ 5.852837] register_netdevice+0x628/0x6b8 [ 5.857171] register_netdev+0x14/0x24 [ 5.861051] bcm_sysport_probe+0x30c/0x438 [ 5.865280] platform_drv_probe+0x50/0xb0 [ 5.869418] driver_probe_device+0x2e8/0x450 [ 5.873817] __driver_attach+0x104/0x120 [ 5.877871] bus_for_each_dev+0x7c/0xc0 [ 5.881834] bus_add_driver+0x1b0/0x270 [ 5.885797] driver_register+0x78/0xf4 [ 5.889675] do_one_initcall+0x54/0x190 [ 5.893646] kernel_init_freeable+0x144/0x1d0 [ 5.898135] kernel_init+0x8/0x110 [ 5.901665] ret_from_fork+0x14/0x2c [ 5.905363] irq event stamp: 24263 [ 5.908804] hardirqs last enabled at (24262): [<c08eecf0>] net_rx_action+0xc4/0x4e4 [ 5.916624] hardirqs last disabled at (24263): [<c0a7da00>] _raw_spin_lock_irqsave+0x1c/0x98 [ 5.925143] softirqs last enabled at (24258): [<c022a7fc>] irq_enter+0x84/0x98 [ 5.932524] softirqs last disabled at (24259): [<c022a918>] irq_exit+0x108/0x16c [ 5.939985] [ 5.939985] other info that might help us debug this: [ 5.946576] Possible unsafe locking scenario: [ 5.946576] [ 5.952556] CPU0 [ 5.955031] ---- [ 5.957506] lock(&syncp->seq#2); [ 5.960955] <Interrupt> [ 5.963604] lock(&syncp->seq#2); [ 5.967227] [ 5.967227] *** DEADLOCK *** [ 5.967227] [ 5.973222] 1 lock held by swapper/0/0: [ 5.977092] #0: (&(&ring->lock)->rlock){..-...}, at: [<c0768a18>] bcm_sysport_tx_reclaim+0x20/0x54 So just remove the u64_stats_update_begin()/end() pair in ndo_get_stats64() since it does not appear to be useful for anything. No inconsistency was observed with either ifconfig or ethtool, global TX counts equal the sum of per-queue TX counts on a 32-bit architecture. Fixes: 10377ba7673d ("net: systemport: Support 64bit statistics") Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: vrf: avoid gcc-4.6 warningArnd Bergmann2017-09-151-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When building an allmodconfig kernel with gcc-4.6, we get a rather odd warning: drivers/net/vrf.c: In function ‘vrf_ip6_input_dst’: drivers/net/vrf.c:964:3: error: initialized field with side-effects overwritten [-Werror] drivers/net/vrf.c:964:3: error: (near initialization for ‘fl6’) [-Werror] I have no idea what this warning is even trying to say, but it does seem like a false positive. Reordering the initialization in to match the structure definition gets rid of the warning, and might also avoid whatever gcc thinks is wrong here. Fixes: 9ff74384600a ("net: vrf: Handle ipv6 multicast and link-local addresses") Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| * qed: remove unnecessary call to memsetHimanshu Jha2017-09-151-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | call to memset to assign 0 value immediately after allocating memory with kzalloc is unnecesaary as kzalloc allocates the memory filled with 0 value. Semantic patch used to resolve this issue: @@ expression e,e2; constant c; statement S; @@ e = kzalloc(e2, c); if(e == NULL) S - memset(e, 0, e2); Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com> Signed-off-by: Himanshu Jha <himanshujha199640@gmail.com> Acked-by: Sudarsana Kalluru <sudarsana.kalluru@cavium.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * tg3: clean up redundant initialization of tnapiColin Ian King2017-09-141-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | tnapi is being initialized and then immediately updated and hence the initialiation is redundant. Clean up the warning by moving the declaration and initialization to the inside of the for-loop. Cleans up clang scan-build warning: warning: Value stored to 'tnapi' during its initialization is never read Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * nfp: wait for the NSP resource to appear on bootJakub Kicinski2017-09-133-0/+51
| | | | | | | | | | | | | | | | | | | | | | | | | | | | The control process (NSP) may take some time to complete its initialization. This is not a problem on most servers, but on very fast-booting machines it may not be ready for operation when driver probes the device. There is also a version of the flash in the wild where NSP tries to train the links as part of init. To wait for NSP initialization we should make sure its resource has already been added to the resource table. NSP adds itself there as last step of init. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * nfp: wait for board state before talking to the NSPJakub Kicinski2017-09-132-23/+43
| | | | | | | | | | | | | | | | | | | | Board state informs us which low-level initialization stages the card has completed. We should wait for the card to be fully initialized before trying to communicate with it, not only before we configure passing traffic. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * nfp: add whitelist of supported flow dissectorPieter Jansen van Vuuren2017-09-131-0/+13
| | | | | | | | | | | | | | | | | | | | | | | | Previously we did not check the flow dissector against a list of allowed and supported flow key dissectors. This patch introduces such a list and correctly rejects unsupported flow keys. Fixes: 43f84b72c50d ("nfp: add metadata to each flow offload") Signed-off-by: Pieter Jansen van Vuuren <pieter.jansenvanvuuren@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * be2net: fix TSO6/GSO issue causing TX-stall on Lancer/BExSuresh Reddy2017-09-132-0/+22
| | | | | | | | | | | | | | | | | | | | | | | | IPv6 TSO requests with extension hdrs are a problem to the Lancer and BEx chips. Workaround is to disable TSO6 feature for such packets. Also in Lancer chips, MSS less than 256 was resulting in TX stall. Fix this by disabling GSO when MSS less than 256. Signed-off-by: Suresh Reddy <suresh.reddy@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * w90p910_ether: include linux/interrupt.hArnd Bergmann2017-09-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | A randconfig build caused a compile failure: drivers/net/ethernet/nuvoton/w90p910_ether.c: In function 'w90p910_ether_close': drivers/net/ethernet/nuvoton/w90p910_ether.c:580:2: error: implicit declaration of function 'free_irq'; did you mean 'free_uid'? [-Werror=implicit-function-declaration] Adding the correct include fixes the problem. Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: bonding: fix tlb_dynamic_lb default valueNikolay Aleksandrov2017-09-131-10/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 8b426dc54cf4 ("bonding: remove hardcoded value") changed the default value for tlb_dynamic_lb which lead to either broken ALB mode (since tlb_dynamic_lb can be changed only in TLB) or setting TLB mode with tlb_dynamic_lb equal to 0. The first issue was recently fixed by setting tlb_dynamic_lb to 1 always when switching to ALB mode, but the default value is still wrong and we'll enter TLB mode with tlb_dynamic_lb equal to 0 if the mode is changed via netlink or sysfs. In order to restore the previous behaviour and default value simply remove the mode check around the default param initialization for tlb_dynamic_lb which will always set it to 1 as before. Fixes: 8b426dc54cf4 ("bonding: remove hardcoded value") Signed-off-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Acked-by: Mahesh Bandewar <maheshb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * mlxsw: spectrum: Prevent mirred-related crash on removalYuval Mintz2017-09-131-10/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When removing the offloading of mirred actions under matchall classifiers, mlxsw would find the destination port associated with the offloaded action and utilize it for undoing the configuration. Depending on the order by which ports are removed, it's possible that the destination port would get removed before the source port. In such a scenario, when actions would be flushed for the source port mlxsw would perform an illegal dereference as the destination port is no longer listed. Since the only item necessary for undoing the configuration on the destination side is the port-id and that in turn is already maintained by mlxsw on the source-port, simply stop trying to access the destination port and use the port-id directly instead. Fixes: 763b4b70af ("mlxsw: spectrum: Add support in matchall mirror TC offloading") Signed-off-by: Yuval Mintz <yuvalm@mellanox.com> Signed-off-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * smsc95xx: Configure pause time to 0xffff when tx flow control enabledNisar Sayed2017-09-131-6/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | Configure pause time to 0xffff when tx flow control enabled Set pause time to 0xffff in the pause frame to indicate the partner to stop sending the packets. When RX buffer frees up, the device sends pause frame with pause time zero for partner to resume transmission. Fixes: 2f7ca802bdae ("Add SMSC LAN9500 USB2.0 10/100 ethernet adapter driver") Signed-off-by: Nisar Sayed <Nisar.Sayed@microchip.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * net: bonding: Fix transmit load balancing in balance-alb mode if specified ↵Kosuke Tatsukawa2017-09-111-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | by sysfs Commit cbf5ecb30560 ("net: bonding: Fix transmit load balancing in balance-alb mode") tried to fix transmit dynamic load balancing in balance-alb mode, which wasn't working after commit 8b426dc54cf4 ("bonding: remove hardcoded value"). It turned out that my previous patch only fixed the case when balance-alb was specified as bonding module parameter, and not when balance-alb mode was set using /sys/class/net/*/bonding/mode (the most common usage). In the latter case, tlb_dynamic_lb was set up according to the default mode of the bonding interface, which happens to be balance-rr. This additional patch addresses this issue by setting up tlb_dynamic_lb to 1 if "mode" is set to balance-alb through the sysfs interface. I didn't add code to change tlb_balance_lb back to the default value for other modes, because "mode" is usually set up only once during initialization, and it's not worthwhile to change the static variable bonding_defaults in bond_main.c to a global variable just for this purpose. Commit 8b426dc54cf4 also changes the value of tlb_dynamic_lb for balance-tlb mode if it is set up using the sysfs interface. I didn't change that behavior, because the value of tlb_balance_lb can be changed using the sysfs interface for balance-tlb, and I didn't like changing the default value back and forth for balance-tlb. As for balance-alb, /sys/class/net/*/bonding/tlb_balance_lb cannot be written to. However, I think balance-alb with tlb_dynamic_lb set to 0 is not an intended usage, so there is little use making it writable at this moment. Fixes: 8b426dc54cf4 ("bonding: remove hardcoded value") Reported-by: Reinis Rozitis <r@roze.lv> Signed-off-by: Kosuke Tatsukawa <tatsu@ab.jp.nec.com> Cc: stable@vger.kernel.org # v4.12+ Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Acked-by: Mahesh Bandewar <maheshb@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 22:11:50 +0100