- 08 May, 2020 14 commits
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Grygorii Strashko authored
Update CPTS node following DT binding update: - add reg and compatible properties - fix node name Signed-off-by:
Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Grygorii Strashko authored
This patch follows K3 CPTS review comments from Rob Herring <robh@kernel.org>. - "reg" and "compatible" properties are required now - minor format changes - K3 CPTS example added to K3 MCU CPSW bindings Cc: Rob Herring <robh@kernel.org> Signed-off-by:
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Grygorii Strashko authored
The MCU CPSW expected to populate only MDIO device, but follow up patches will add "compatible" property to the MCU CPSW CPTS node which will cause creation of CPTS device and MCU CPSW init failure. Hence, switch to use of_platform_device_create() instead of of_platform_populate() for MDIO device population. Signed-off-by:
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David S. Miller authored
Taehee Yoo says: ==================== hsr: hsr code refactoring There are some unnecessary routine in the hsr module. This patch removes these routines. The first patch removes incorrect comment. The second patch removes unnecessary WARN_ONCE() macro. ==================== Signed-off-by: -
Ioana Ciornei authored
Create an independent function that takes a particular frame queue and an array of frame descriptors and tries to enqueue them until it hits the maximum number fo retries. The same function will be used in the next patch also on the XDP_TX path. Also, create the dpaa2_eth_xdp_fds structure to incorporate the array of FDs as well as the number of FDs already populated. Signed-off-by:
Ioana Ciornei <ioana.ciornei@nxp.com> Signed-off-by:
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Taehee Yoo authored
When VLAN frame is being sent, hsr calls WARN_ONCE() because hsr doesn't support VLAN. But using WARN_ONCE() is overdoing. Using netdev_warn_once() is enough. Signed-off-by:
Taehee Yoo <ap420073@gmail.com> Signed-off-by:
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Ioana Ciornei authored
Mask the consumer index before using it. Without this, we would be writing frame descriptors beyond the ring size supported by the QBMAN block. Fixes: 3b2abda7 ("soc: fsl: dpio: Replace QMAN array mode with ring mode enqueue") Signed-off-by:
Li Yang <leoyang.li@nxp.com> Signed-off-by:
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David S. Miller authored
Vladimir Oltean says: ==================== tc-gate offload for SJA1105 DSA switch Expose the TTEthernet hardware features of the switch using standard tc-flower actions: trap, drop, redirect and gate. v1 was submitted at: https://patchwork.ozlabs.org/project/netdev/cover/20200503211035.19363-1-olteanv@gmail.com/ v2 was submitted at: https://patchwork.ozlabs.org/project/netdev/cover/20200503211035.19363-1-olteanv@gmail.com/ Changes in v3: Made sure there are no compilation warnings when CONFIG_NET_DSA_SJA1105_TAS or CONFIG_NET_DSA_SJA1105_VL are disabled. Changes in v2: Using a newly introduced dsa_port_from_netdev public helper. ==================== Signed-off-by:
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Vladimir Oltean authored
Add some verbiage describing how the hardware features of the switch are exposed to users through tc-flower. Signed-off-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by:
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Vladimir Oltean authored
Restrict the TTEthernet hardware support on this switch to operate as closely as possible to IEEE 802.1Qci as possible. This means that it can perform PTP-time-based ingress admission control on streams identified by {DMAC, VID, PCP}, which is useful when trying to ensure the determinism of traffic scheduled via IEEE 802.1Qbv. The oddity comes from the fact that in hardware (and in TTEthernet at large), virtual links always need a full-blown action, including not only the type of policing, but also the list of destination ports. So in practice, a single tc-gate action will result in all packets getting dropped. Additional actions (either "trap" or "redirect") need to be specified in the same filter rule such that the conforming packets are actually forwarded somewhere. Apart from the VL Lookup, Policing and Forwarding tables which need to be programmed for each flow (virtual link), the Schedule engine also needs to be told to open/close the admission gates for each individual virtual link. A fairly accurate (and detailed) description of how that works is already present in sja1105_tas.c, since it is already used to trigger the egress gates for the tc-taprio offload (IEEE 802.1Qbv). Key point here, we remember that the schedule engine supports 8 "subschedules" (execution threads that iterate through the global schedule in parallel, and that no 2 hardware threads must execute a schedule entry at the same time). For tc-taprio, each egress port used one of these 8 subschedules, leaving a total of 4 subschedules unused. In principle we could have allocated 1 subschedule for the tc-gate offload of each ingress port, but actually the schedules of all virtual links installed on each ingress port would have needed to be merged together, before they could have been programmed to hardware. So simplify our life and just merge the entire tc-gate configuration, for all virtual links on all ingress ports, into a single subschedule. Be sure to check that against the usual hardware scheduling conflicts, and program it to hardware alongside any tc-taprio subschedule that may be present. The following scenarios were tested: 1. Quantitative testing: tc qdisc add dev swp2 clsact tc filter add dev swp2 ingress flower skip_sw \ dst_mac 42:be:24:9b:76:20 \ action gate index 1 base-time 0 \ sched-entry OPEN 1200 -1 -1 \ sched-entry CLOSE 1200 -1 -1 \ action trap ping 192.168.1.2 -f PING 192.168.1.2 (192.168.1.2) 56(84) bytes of data. ............................. --- 192.168.1.2 ping statistics --- 948 packets transmitted, 467 received, 50.7384% packet loss, time 9671ms 2. Qualitative testing (with a phase-aligned schedule - the clocks are synchronized by ptp4l, not shown here): Receiver (sja1105): tc qdisc add dev swp2 clsact now=$(phc_ctl /dev/ptp1 get | awk '/clock time is/ {print $5}') && \ sec=$(echo $now | awk -F. '{print $1}') && \ base_time="$(((sec + 2) * 1000000000))" && \ echo "base time ${base_time}" tc filter add dev swp2 ingress flower skip_sw \ dst_mac 42:be:24:9b:76:20 \ action gate base-time ${base_time} \ sched-entry OPEN 60000 -1 -1 \ sched-entry CLOSE 40000 -1 -1 \ action trap Sender (enetc): now=$(phc_ctl /dev/ptp0 get | awk '/clock time is/ {print $5}') && \ sec=$(echo $now | awk -F. '{print $1}') && \ base_time="$(((sec + 2) * 1000000000))" && \ echo "base time ${base_time}" tc qdisc add dev eno0 parent root taprio \ num_tc 8 \ map 0 1 2 3 4 5 6 7 \ queues 1@0 1@1 1@2 1@3 1@4 1@5 1@6 1@7 \ base-time ${base_time} \ sched-entry S 01 50000 \ sched-entry S 00 50000 \ flags 2 ping -A 192.168.1.1 PING 192.168.1.1 (192.168.1.1): 56 data bytes ... ^C --- 192.168.1.1 ping statistics --- 1425 packets transmitted, 1424 packets received, 0% packet loss round-trip min/avg/max = 0.322/0.361/0.990 ms And just for comparison, with the tc-taprio schedule deleted: ping -A 192.168.1.1 PING 192.168.1.1 (192.168.1.1): 56 data bytes ... ^C --- 192.168.1.1 ping statistics --- 33 packets transmitted, 19 packets received, 42% packet loss round-trip min/avg/max = 0.336/0.464/0.597 ms Signed-off-by: -
Vladimir Oltean authored
Implement tc-flower offloads for redirect, trap and drop using non-critical virtual links. Commands which were tested to work are: # Send frames received on swp2 with a DA of 42:be:24:9b:76:20 to the # CPU and to swp3. This type of key (DA only) when the port's VLAN # awareness state is off. tc qdisc add dev swp2 clsact tc filter add dev swp2 ingress flower skip_sw dst_mac 42:be:24:9b:76:20 \ action mirred egress redirect dev swp3 \ action trap # Drop frames received on swp2 with a DA of 42:be:24:9b:76:20, a VID # of 100 and a PCP of 0. tc filter add dev swp2 ingress protocol 802.1Q flower skip_sw \ dst_mac 42:be:24:9b:76:20 vlan_id 100 vlan_prio 0 action drop Under the hood, all rules match on DMAC, VID and PCP, but when VLAN filtering is disabled, those are set internally by the driver to the port-based defaults. Because we would be put in an awkward situation if the user were to change the VLAN filtering state while there are active rules (packets would no longer match on the specified keys), we simply deny changing vlan_filtering unless the list of flows offloaded via virtual links is empty. Then the user can re-add new rules. Signed-off-by: -
Vladimir Oltean authored
Virtual links are a sja1105 hardware concept of executing various flow actions based on a key extracted from the frame's DMAC, VID and PCP. Currently the tc-flower offload code supports only parsing the DMAC if that is the broadcast MAC address, and the VLAN PCP. Extract the key parsing logic from the L2 policers functionality and move it into its own function, after adding extra logic for matching on any DMAC and VID. Signed-off-by:
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Vladimir Oltean authored
This patch adds the register definitions for the: - VL Lookup Table - VL Policing Table - VL Forwarding Table - VL Forwarding Parameters Table These are needed in order to perform TTEthernet operations: QoS classification, flow-based policing and/or frame redirecting with the switch. Signed-off-by:
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Vladimir Oltean authored
As its implementation shows, this is synonimous with calling dsa_slave_dev_check followed by dsa_slave_to_port, so it is quite simple already and provides functionality which is already there. However there is now a need for these functions outside dsa_priv.h, for example in drivers that perform mirroring and redirection through tc-flower offloads (they are given raw access to the flow_cls_offload structure), where they need to call this function on act->dev. But simply exporting dsa_slave_to_port would make it non-inline and would result in an extra function call in the hotpath, as can be seen for example in sja1105: Before: 000006dc <sja1105_xmit>: { 6dc: e92d4ff0 push {r4, r5, r6, r7, r8, r9, sl, fp, lr} 6e0: e1a04000 mov r4, r0 6e4: e591958c ldr r9, [r1, #1420] ; 0x58c <- Inline dsa_slave_to_port 6e8: e1a05001 mov r5, r1 6ec: e24dd004 sub sp, sp, #4 u16 tx_vid = dsa_8021q_tx_vid(dp->ds, dp->index); 6f0: e1c901d8 ldrd r0, [r9, #24] 6f4: ebfffffe bl 0 <dsa_8021q_tx_vid> 6f4: R_ARM_CALL dsa_8021q_tx_vid u8 pcp = netdev_txq_to_tc(netdev, queue_mapping); 6f8: e1d416b0 ldrh r1, [r4, #96] ; 0x60 u16 tx_vid = dsa_8021q_tx_vid(dp->ds, dp->index); 6fc: e1a08000 mov r8, r0 After: 000006e4 <sja1105_xmit>: { 6e4: e92d4ff0 push {r4, r5, r6, r7, r8, r9, sl, fp, lr} 6e8: e1a04000 mov r4, r0 6ec: e24dd004 sub sp, sp, #4 struct dsa_port *dp = dsa_slave_to_port(netdev); 6f0: e1a00001 mov r0, r1 { 6f4: e1a05001 mov r5, r1 struct dsa_port *dp = dsa_slave_to_port(netdev); 6f8: ebfffffe bl 0 <dsa_slave_to_port> 6f8: R_ARM_CALL dsa_slave_to_port 6fc: e1a09000 mov r9, r0 u16 tx_vid = dsa_8021q_tx_vid(dp->ds, dp->index); 700: e1c001d8 ldrd r0, [r0, #24] 704: ebfffffe bl 0 <dsa_8021q_tx_vid> 704: R_ARM_CALL dsa_8021q_tx_vid Because we want to avoid possible performance regressions, introduce this new function which is designed to be public. Suggested-by:Vivien Didelot <vivien.didelot@gmail.com> Signed-off-by:
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- 07 May, 2020 26 commits
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Chen Zhou authored
Remove duplicate headers which are included twice. Signed-off-by:
Chen Zhou <chenzhou10@huawei.com> Signed-off-by:
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David S. Miller authored
Merge tag 'wireless-drivers-next-2020-05-07' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next Kalle Valo says: ==================== wireless-drivers-next patches for v5.8 First set of patches for v5.8. Changes all over, ath10k apparently seeing most new features this time. rtw88 also had lots of changes due to preparation for new hardware support. In this pull request there's also a new macro to include/linux/iopoll: read_poll_timeout_atomic(). This is needed by rtw88 for atomic polling. Major changes: ath11k * add debugfs file for testing ADDBA and DELBA * add 802.11 encapsulation offload on hardware support * add htt_peer_stats_reset debugfs file ath10k * enable VHT160 and VHT80+80 modes * enable radar detection in secondary segment * sdio: disable TX complete indication to improve throughput * sdio: decrease power consumption * sdio: add HTT TX bundle support to increase throughput * sdio: add rx bitrate reporting ath9k * improvements to AR9002 calibration logic carl9170 * remove buggy P2P_GO support p54usb * add support for AirVasT USB stick rtw88 * add support for antenna configuration ti wlcore * add support for AES_CMAC cipher iwlwifi * support for a few new FW API versions * new hw configs ==================== Signed-off-by:
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David S. Miller authored
Manivannan Sadhasivam says: ==================== Add QRTR MHI client driver Here is the series adding MHI client driver support to Qualcomm IPC router protocol. MHI is a newly added bus to kernel which is used to communicate to external modems over a physical interface like PCI-E. This driver is used to transfer the QMI messages between the host processor and external modems over the "IPCR" channel. For QRTR, this driver is just another driver acting as a transport layer like SMD. Currently this driver is needed to control the QCA6390 WLAN device from ath11k. The ath11k MHI controller driver will take care of booting up QCA6390 and bringing it to operating state. Later, this driver will be used to transfer QMI messages over the MHI-IPCR channel. The second patch of this series removes the ARCH_QCOM dependency for QRTR. This is needed because the QRTR driver will be used with x86 machines as well to talk to devices like QCA6390. ==================== Signed-off-by: -
Manivannan Sadhasivam authored
IPC Router protocol is also used by external modems for exchanging the QMI messages. Hence, it doesn't always depend on Qualcomm platforms. One such instance is the QCA6390 WLAN device connected to x86 machine. Reviewed-by:
Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by:
Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org> Signed-off-by:
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Manivannan Sadhasivam authored
MHI is the transport layer used for communicating to the external modems. Hence, this commit adds MHI transport layer support to QRTR for transferring the QMI messages over IPC Router. Reviewed-by:
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Geert Uytterhoeven authored
The VIA Rhine Ethernet interface is only present on PCI devices or VIA/WonderMedia VT8500/WM85xx SoCs. Add platform dependencies to the VIA_RHINE config symbol, to avoid asking the user about it when configuring a kernel without PCI or VT8500/WM85xx support. Signed-off-by:
Geert Uytterhoeven <geert+renesas@glider.be> Acked-by:
Arnd Bergmann <arnd@arndb.de> Signed-off-by:
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Po Liu authored
'Dan Carpenter' reported: This code frees "sfi" and then dereferences it on the next line: > kfree(sfi); > clear_bit(sfi->index, epsfp.psfp_sfi_bitmap); This "sfi->index" should be "index". Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Po Liu <Po.Liu@nxp.com> Signed-off-by:
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Jason Yan authored
This function always return 0 now, we can make it return void to simplify the code. This fixes the following coccicheck warning: drivers/net/ethernet/microchip/encx24j600.c:609:5-8: Unneeded variable: "ret". Return "0" on line 653 Signed-off-by:
Jason Yan <yanaijie@huawei.com> Signed-off-by:
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Jason Yan authored
Fix the following coccicheck warning: drivers/net/ethernet/mellanox/mlx4/en_ethtool.c:1396:5-8: Unneeded variable: "err". Return "0" on line 1411 Signed-off-by:
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Jason Yan authored
This function always return 0 now, we can make it return void to simplify the code. This fixes the following coccicheck warning: drivers/net/ethernet/dec/tulip/de4x5.c:3908:11-17: Unneeded variable: "status". Return "0" on line 3912 Signed-off-by:
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Jason Yan authored
This code has been marked dead for nearly 10 years. Remove it. Signed-off-by:
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Jason Yan authored
This function is dead for more than 10 years. Remove it. Signed-off-by:
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Zheng Zengkai authored
Fix sparse warnings: drivers/net/phy/mdio-bcm-iproc.c:182:5: warning: symbol 'iproc_mdio_resume' was not declared. Should it be static? Reported-by:
Hulk Robot <hulkci@huawei.com> Signed-off-by:
Zheng Zengkai <zhengzengkai@huawei.com> Acked-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller authored
Conflicts were all overlapping changes. Signed-off-by: -
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds authored
Pull networking fixes from David Miller: 1) Fix reference count leaks in various parts of batman-adv, from Xiyu Yang. 2) Update NAT checksum even when it is zero, from Guillaume Nault. 3) sk_psock reference count leak in tls code, also from Xiyu Yang. 4) Sanity check TCA_FQ_CODEL_DROP_BATCH_SIZE netlink attribute in fq_codel, from Eric Dumazet. 5) Fix panic in choke_reset(), also from Eric Dumazet. 6) Fix VLAN accel handling in bnxt_fix_features(), from Michael Chan. 7) Disallow out of range quantum values in sch_sfq, from Eric Dumazet. 8) Fix crash in x25_disconnect(), from Yue Haibing. 9) Don't pass pointer to local variable back to the caller in nf_osf_hdr_ctx_init(), from Arnd Bergmann. 10) Wireguard should use the ECN decap helper functions, from Toke Høiland-Jørgensen. 11) Fix command entry leak in mlx5 driver, from Moshe Shemesh. 12) Fix uninitialized variable access in mptcp's subflow_syn_recv_sock(), from Paolo Abeni. 13) Fix unnecessary out-of-order ingress frame ordering in macsec, from Scott Dial. 14) IPv6 needs to use a global serial number for dst validation just like ipv4, from David Ahern. 15) Fix up PTP_1588_CLOCK deps, from Clay McClure. 16) Missing NLM_F_MULTI flag in gtp driver netlink messages, from Yoshiyuki Kurauchi. 17) Fix a regression in that dsa user port errors should not be fatal, from Florian Fainelli. 18) Fix iomap leak in enetc driver, from Dejin Zheng. 19) Fix use after free in lec_arp_clear_vccs(), from Cong Wang. 20) Initialize protocol value earlier in neigh code paths when generating events, from Roman Mashak. 21) netdev_update_features() must be called with RTNL mutex in macsec driver, from Antoine Tenart. 22) Validate untrusted GSO packets even more strictly, from Willem de Bruijn. 23) Wireguard decrypt worker needs a cond_resched(), from Jason Donenfeld. * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (111 commits) net: flow_offload: skip hw stats check for FLOW_ACTION_HW_STATS_DONT_CARE MAINTAINERS: put DYNAMIC INTERRUPT MODERATION in proper order wireguard: send/receive: use explicit unlikely branch instead of implicit coalescing wireguard: selftests: initalize ipv6 members to NULL to squelch clang warning wireguard: send/receive: cond_resched() when processing worker ringbuffers wireguard: socket: remove errant restriction on looping to self wireguard: selftests: use normal kernel stack size on ppc64 net: ethernet: ti: am65-cpsw-nuss: fix irqs type ionic: Use debugfs_create_bool() to export bool net: dsa: Do not leave DSA master with NULL netdev_ops net: dsa: remove duplicate assignment in dsa_slave_add_cls_matchall_mirred net: stricter validation of untrusted gso packets seg6: fix SRH processing to comply with RFC8754 net: mscc: ocelot: ANA_AUTOAGE_AGE_PERIOD holds a value in seconds, not ms net: dsa: ocelot: the MAC table on Felix is twice as large net: dsa: sja1105: the PTP_CLK extts input reacts on both edges selftests: net: tcp_mmap: fix SO_RCVLOWAT setting net: hsr: fix incorrect type usage for protocol variable net: macsec: fix rtnl locking issue net: mvpp2: cls: Prevent buffer overflow in mvpp2_ethtool_cls_rule_del() ... -
Pablo Neira Ayuso authored
This patch adds FLOW_ACTION_HW_STATS_DONT_CARE which tells the driver that the frontend does not need counters, this hw stats type request never fails. The FLOW_ACTION_HW_STATS_DISABLED type explicitly requests the driver to disable the stats, however, if the driver cannot disable counters, it bails out. TCA_ACT_HW_STATS_* maintains the 1:1 mapping with FLOW_ACTION_HW_STATS_* except by disabled which is mapped to FLOW_ACTION_HW_STATS_DISABLED (this is 0 in tc). Add tc_act_hw_stats() to perform the mapping between TCA_ACT_HW_STATS_* and FLOW_ACTION_HW_STATS_*. Fixes: 319a1d19 ("flow_offload: check for basic action hw stats type") Signed-off-by:
Pablo Neira Ayuso <pablo@netfilter.org> Signed-off-by:
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Lukas Bulwahn authored
Commit 9b038086 ("docs: networking: convert DIM to RST") added a new file entry to DYNAMIC INTERRUPT MODERATION to the end, and not following alphabetical order. So, ./scripts/checkpatch.pl -f MAINTAINERS complains: WARNING: Misordered MAINTAINERS entry - list file patterns in alphabetic order #5966: FILE: MAINTAINERS:5966: +F: lib/dim/ +F: Documentation/networking/net_dim.rst Reorder the file entries to keep MAINTAINERS nicely ordered. Signed-off-by:
Lukas Bulwahn <lukas.bulwahn@gmail.com> Acked-by:
Jakub Kicinski <kuba@kernel.org> Signed-off-by:
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David S. Miller authored
Jason A. Donenfeld says: ==================== wireguard fixes for 5.7-rc5 With Ubuntu and Debian having backported this into their kernels, we're finally seeing testing from places we hadn't seen prior, which is nice. With that comes more fixes: 1) The CI for PPC64 was running with extremely small stacks for 64-bit, causing spurious crashes in surprising places. 2) There's was an old leftover routing loop restriction, which no longer makes sense given the queueing architecture, and was causing problems for people who really did want nested routing. 3) Not yielding our kthread on CONFIG_PREEMPT_VOLUNTARY systems caused RCU stalls and other issues, reported by Wang Jian, with the fix suggested by Sultan Alsawaf. 4) Clang spewed warnings in a selftest for CONFIG_IPV6=n, reported by Arnd Bergmann. 5) A complicated if statement was simplified to an assignment while also making the likely/unlikely hinting more correct and simple, and increasing readability, suggested by Sultan. Patches (2) and (3) have Fixes: lines and are probably good candidates for stable. ==================== Signed-off-by: -
Jason A. Donenfeld authored
It's very unlikely that send will become true. It's nearly always false between 0 and 120 seconds of a session, and in most cases becomes true only between 120 and 121 seconds before becoming false again. So, unlikely(send) is clearly the right option here. What happened before was that we had this complex boolean expression with multiple likely and unlikely clauses nested. Since this is evaluated left-to-right anyway, the whole thing got converted to unlikely. So, we can clean this up to better represent what's going on. The generated code is the same. Suggested-by:
Sultan Alsawaf <sultan@kerneltoast.com> Signed-off-by:
Jason A. Donenfeld <Jason@zx2c4.com> Signed-off-by:
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Jason A. Donenfeld authored
Without setting these to NULL, clang complains in certain configurations that have CONFIG_IPV6=n: In file included from drivers/net/wireguard/ratelimiter.c:223: drivers/net/wireguard/selftest/ratelimiter.c:173:34: error: variable 'skb6' is uninitialized when used here [-Werror,-Wuninitialized] ret = timings_test(skb4, hdr4, skb6, hdr6, &test_count); ^~~~ drivers/net/wireguard/selftest/ratelimiter.c:123:29: note: initialize the variable 'skb6' to silence this warning struct sk_buff *skb4, *skb6; ^ = NULL drivers/net/wireguard/selftest/ratelimiter.c:173:40: error: variable 'hdr6' is uninitialized when used here [-Werror,-Wuninitialized] ret = timings_test(skb4, hdr4, skb6, hdr6, &test_count); ^~~~ drivers/net/wireguard/selftest/ratelimiter.c:125:22: note: initialize the variable 'hdr6' to silence this warning struct ipv6hdr *hdr6; ^ We silence this warning by setting the variables to NULL as the warning suggests. Reported-by: -
Jason A. Donenfeld authored
Users with pathological hardware reported CPU stalls on CONFIG_ PREEMPT_VOLUNTARY=y, because the ringbuffers would stay full, meaning these workers would never terminate. That turned out not to be okay on systems without forced preemption, which Sultan observed. This commit adds a cond_resched() to the bottom of each loop iteration, so that these workers don't hog the core. Note that we don't need this on the napi poll worker, since that terminates after its budget is expended. Suggested-by:
Wang Jian <larkwang@gmail.com> Fixes: e7096c13 ("net: WireGuard secure network tunnel") Signed-off-by:
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Jason A. Donenfeld authored
It's already possible to create two different interfaces and loop packets between them. This has always been possible with tunnels in the kernel, and isn't specific to wireguard. Therefore, the networking stack already needs to deal with that. At the very least, the packet winds up exceeding the MTU and is discarded at that point. So, since this is already something that happens, there's no need to forbid the not very exceptional case of routing a packet back to the same interface; this loop is no different than others, and we shouldn't special case it, but rather rely on generic handling of loops in general. This also makes it easier to do interesting things with wireguard such as onion routing. At the same time, we add a selftest for this, ensuring that both onion routing works and infinite routing loops do not crash the kernel. We also add a test case for wireguard interfaces nesting packets and sending traffic between each other, as well as the loop in this case too. We make sure to send some throughput-heavy traffic for this use case, to stress out any possible recursion issues with the locks around workqueues. Fixes: e7096c13 ("net: WireGuard secure network tunnel") Signed-off-by:
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Jason A. Donenfeld authored
While at some point it might have made sense to be running these tests on ppc64 with 4k stacks, the kernel hasn't actually used 4k stacks on 64-bit powerpc in a long time, and more interesting things that we test don't really work when we deviate from the default (16k). So, we stop pushing our luck in this commit, and return to the default instead of the minimum. Signed-off-by:
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Grygorii Strashko authored
The K3 INTA driver, which is source TX/RX IRQs for CPSW NUSS, defines IRQs triggering type as EDGE by default, but triggering type for CPSW NUSS TX/RX IRQs has to be LEVEL as the EDGE triggering type may cause unnecessary IRQs triggering and NAPI scheduling for empty queues. It was discovered with RT-kernel. Fix it by explicitly specifying CPSW NUSS TX/RX IRQ type as IRQF_TRIGGER_HIGH. Fixes: 93a76530 ("net: ethernet: ti: introduce am65x/j721e gigabit eth subsystem driver") Signed-off-by:
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Arnd Bergmann authored
The addition of sja1105_port_status_ether structure into the statistics causes the frame size to go over the warning limit: drivers/net/dsa/sja1105/sja1105_ethtool.c:421:6: error: stack frame size of 1104 bytes in function 'sja1105_get_ethtool_stats' [-Werror,-Wframe-larger-than=] Use dynamic allocation to avoid this. Fixes: 336aa67b ("net: dsa: sja1105: show more ethtool statistics counters for P/Q/R/S") Signed-off-by:
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Geert Uytterhoeven authored
Currently bool ionic_cq.done_color is exported using debugfs_create_u8(), which requires a cast, preventing further compiler checks. Fix this by switching to debugfs_create_bool(), and dropping the cast. Signed-off-by:
Shannon Nelson <snelson@pensando.io> Signed-off-by:
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