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2024-05-22tracing/treewide: Remove second parameter of __assign_str()Steven Rostedt (Google)
With the rework of how the __string() handles dynamic strings where it saves off the source string in field in the helper structure[1], the assignment of that value to the trace event field is stored in the helper value and does not need to be passed in again. This means that with: __string(field, mystring) Which use to be assigned with __assign_str(field, mystring), no longer needs the second parameter and it is unused. With this, __assign_str() will now only get a single parameter. There's over 700 users of __assign_str() and because coccinelle does not handle the TRACE_EVENT() macro I ended up using the following sed script: git grep -l __assign_str | while read a ; do sed -e 's/\(__assign_str([^,]*[^ ,]\) *,[^;]*/\1)/' $a > /tmp/test-file; mv /tmp/test-file $a; done I then searched for __assign_str() that did not end with ';' as those were multi line assignments that the sed script above would fail to catch. Note, the same updates will need to be done for: __assign_str_len() __assign_rel_str() __assign_rel_str_len() I tested this with both an allmodconfig and an allyesconfig (build only for both). [1] https://lore.kernel.org/linux-trace-kernel/20240222211442.634192653@goodmis.org/ Link: https://lore.kernel.org/linux-trace-kernel/20240516133454.681ba6a0@rorschach.local.home Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Julia Lawall <Julia.Lawall@inria.fr> Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org> Acked-by: Jani Nikula <jani.nikula@intel.com> Acked-by: Christian König <christian.koenig@amd.com> for the amdgpu parts. Acked-by: Thomas Hellström <thomas.hellstrom@linux.intel.com> #for Acked-by: Rafael J. Wysocki <rafael@kernel.org> # for thermal Acked-by: Takashi Iwai <tiwai@suse.de> Acked-by: Darrick J. Wong <djwong@kernel.org> # xfs Tested-by: Guenter Roeck <linux@roeck-us.net>
2024-05-07net: annotate writes on dev->mtu from ndo_change_mtu()Eric Dumazet
Simon reported that ndo_change_mtu() methods were never updated to use WRITE_ONCE(dev->mtu, new_mtu) as hinted in commit 501a90c94510 ("inet: protect against too small mtu values.") We read dev->mtu without holding RTNL in many places, with READ_ONCE() annotations. It is time to take care of ndo_change_mtu() methods to use corresponding WRITE_ONCE() Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: Simon Horman <horms@kernel.org> Closes: https://lore.kernel.org/netdev/20240505144608.GB67882@kernel.org/ Reviewed-by: Jacob Keller <jacob.e.keller@intel.com> Reviewed-by: Sabrina Dubroca <sd@queasysnail.net> Reviewed-by: Simon Horman <horms@kernel.org> Acked-by: Shannon Nelson <shannon.nelson@amd.com> Link: https://lore.kernel.org/r/20240506102812.3025432-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-04-10hv_netvsc: Don't free decrypted memoryRick Edgecombe
In CoCo VMs it is possible for the untrusted host to cause set_memory_encrypted() or set_memory_decrypted() to fail such that an error is returned and the resulting memory is shared. Callers need to take care to handle these errors to avoid returning decrypted (shared) memory to the page allocator, which could lead to functional or security issues. The netvsc driver could free decrypted/shared pages if set_memory_decrypted() fails. Check the decrypted field in the gpadl to decide whether to free the memory. Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com> Signed-off-by: Michael Kelley <mhklinux@outlook.com> Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com> Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Link: https://lore.kernel.org/r/20240311161558.1310-4-mhklinux@outlook.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <20240311161558.1310-4-mhklinux@outlook.com>
2024-02-04hv_netvsc: Register VF in netvsc_probe if NET_DEVICE_REGISTER missedShradha Gupta
If hv_netvsc driver is unloaded and reloaded, the NET_DEVICE_REGISTER handler cannot perform VF register successfully as the register call is received before netvsc_probe is finished. This is because we register register_netdevice_notifier() very early( even before vmbus_driver_register()). To fix this, we try to register each such matching VF( if it is visible as a netdevice) at the end of netvsc_probe. Cc: stable@vger.kernel.org Fixes: 85520856466e ("hv_netvsc: Fix race of register_netdevice_notifier and VF register") Suggested-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: Shradha Gupta <shradhagupta@linux.microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2024-02-01hv_netvsc: Fix race condition between netvsc_probe and netvsc_removeSouradeep Chakrabarti
In commit ac5047671758 ("hv_netvsc: Disable NAPI before closing the VMBus channel"), napi_disable was getting called for all channels, including all subchannels without confirming if they are enabled or not. This caused hv_netvsc getting hung at napi_disable, when netvsc_probe() has finished running but nvdev->subchan_work has not started yet. netvsc_subchan_work() -> rndis_set_subchannel() has not created the sub-channels and because of that netvsc_sc_open() is not running. netvsc_remove() calls cancel_work_sync(&nvdev->subchan_work), for which netvsc_subchan_work did not run. netif_napi_add() sets the bit NAPI_STATE_SCHED because it ensures NAPI cannot be scheduled. Then netvsc_sc_open() -> napi_enable will clear the NAPIF_STATE_SCHED bit, so it can be scheduled. napi_disable() does the opposite. Now during netvsc_device_remove(), when napi_disable is called for those subchannels, napi_disable gets stuck on infinite msleep. This fix addresses this problem by ensuring that napi_disable() is not getting called for non-enabled NAPI struct. But netif_napi_del() is still necessary for these non-enabled NAPI struct for cleanup purpose. Call trace: [ 654.559417] task:modprobe state:D stack: 0 pid: 2321 ppid: 1091 flags:0x00004002 [ 654.568030] Call Trace: [ 654.571221] <TASK> [ 654.573790] __schedule+0x2d6/0x960 [ 654.577733] schedule+0x69/0xf0 [ 654.581214] schedule_timeout+0x87/0x140 [ 654.585463] ? __bpf_trace_tick_stop+0x20/0x20 [ 654.590291] msleep+0x2d/0x40 [ 654.593625] napi_disable+0x2b/0x80 [ 654.597437] netvsc_device_remove+0x8a/0x1f0 [hv_netvsc] [ 654.603935] rndis_filter_device_remove+0x194/0x1c0 [hv_netvsc] [ 654.611101] ? do_wait_intr+0xb0/0xb0 [ 654.615753] netvsc_remove+0x7c/0x120 [hv_netvsc] [ 654.621675] vmbus_remove+0x27/0x40 [hv_vmbus] Cc: stable@vger.kernel.org Fixes: ac5047671758 ("hv_netvsc: Disable NAPI before closing the VMBus channel") Signed-off-by: Souradeep Chakrabarti <schakrabarti@linux.microsoft.com> Reviewed-by: Dexuan Cui <decui@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Simon Horman <horms@kernel.org> Link: https://lore.kernel.org/r/1706686551-28510-1-git-send-email-schakrabarti@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2024-01-23hv_netvsc: Calculate correct ring size when PAGE_SIZE is not 4 KbytesMichael Kelley
Current code in netvsc_drv_init() incorrectly assumes that PAGE_SIZE is 4 Kbytes, which is wrong on ARM64 with 16K or 64K page size. As a result, the default VMBus ring buffer size on ARM64 with 64K page size is 8 Mbytes instead of the expected 512 Kbytes. While this doesn't break anything, a typical VM with 8 vCPUs and 8 netvsc channels wastes 120 Mbytes (8 channels * 2 ring buffers/channel * 7.5 Mbytes/ring buffer). Unfortunately, the module parameter specifying the ring buffer size is in units of 4 Kbyte pages. Ideally, it should be in units that are independent of PAGE_SIZE, but backwards compatibility prevents changing that now. Fix this by having netvsc_drv_init() hardcode 4096 instead of using PAGE_SIZE when calculating the ring buffer size in bytes. Also use the VMBUS_RING_SIZE macro to ensure proper alignment when running with page size larger than 4K. Cc: <stable@vger.kernel.org> # 5.15.x Fixes: 7aff79e297ee ("Drivers: hv: Enable Hyper-V code to be built on ARM64") Signed-off-by: Michael Kelley <mhklinux@outlook.com> Link: https://lore.kernel.org/r/20240122162028.348885-1-mhklinux@outlook.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-12-15hv_netvsc: remove duplicated including of slab.hWang Jinchao
rm the second include <linux/slab.h> Signed-off-by: Wang Jinchao <wangjinchao@xfusion.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-12-13net: ethtool: pass a pointer to parameters to get/set_rxfh ethtool opsAhmed Zaki
The get/set_rxfh ethtool ops currently takes the rxfh (RSS) parameters as direct function arguments. This will force us to change the API (and all drivers' functions) every time some new parameters are added. This is part 1/2 of the fix, as suggested in [1]: - First simplify the code by always providing a pointer to all params (indir, key and func); the fact that some of them may be NULL seems like a weird historic thing or a premature optimization. It will simplify the drivers if all pointers are always present. - Then make the functions take a dev pointer, and a pointer to a single struct wrapping all arguments. The set_* should also take an extack. Link: https://lore.kernel.org/netdev/20231121152906.2dd5f487@kernel.org/ [1] Suggested-by: Jakub Kicinski <kuba@kernel.org> Suggested-by: Jacob Keller <jacob.e.keller@intel.com> Signed-off-by: Ahmed Zaki <ahmed.zaki@intel.com> Link: https://lore.kernel.org/r/20231213003321.605376-2-ahmed.zaki@intel.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-12-08net: Convert some ethtool_sprintf() to ethtool_puts()justinstitt@google.com
This patch converts some basic cases of ethtool_sprintf() to ethtool_puts(). The conversions are used in cases where ethtool_sprintf() was being used with just two arguments: | ethtool_sprintf(&data, buffer[i].name); or when it's used with format string: "%s" | ethtool_sprintf(&data, "%s", buffer[i].name); which both now become: | ethtool_puts(&data, buffer[i].name); Signed-off-by: Justin Stitt <justinstitt@google.com> Reviewed-by: Wei Fang <wei.fang@nxp.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Reviewed-by: Louis Peens <louis.peens@corigine.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-12-01hv_netvsc: rndis_filter needs to select NLSRandy Dunlap
rndis_filter uses utf8s_to_utf16s() which is provided by setting NLS, so select NLS to fix the build error: ERROR: modpost: "utf8s_to_utf16s" [drivers/net/hyperv/hv_netvsc.ko] undefined! Fixes: 1ce09e899d28 ("hyperv: Add support for setting MAC from within guests") Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Haiyang Zhang <haiyangz@microsoft.com> Cc: K. Y. Srinivasan <kys@microsoft.com> Cc: Wei Liu <wei.liu@kernel.org> Cc: Dexuan Cui <decui@microsoft.com> Reviewed-by: Simon Horman <horms@kernel.org> Tested-by: Simon Horman <horms@kernel.org> # build-tested Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20231130055853.19069-1-rdunlap@infradead.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-11-21hv_netvsc: Mark VF as slave before exposing it to user-modeLong Li
When a VF is being exposed form the kernel, it should be marked as "slave" before exposing to the user-mode. The VF is not usable without netvsc running as master. The user-mode should never see a VF without the "slave" flag. This commit moves the code of setting the slave flag to the time before VF is exposed to user-mode. Cc: stable@vger.kernel.org Fixes: 0c195567a8f6 ("netvsc: transparent VF management") Signed-off-by: Long Li <longli@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Acked-by: Stephen Hemminger <stephen@networkplumber.org> Acked-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-11-21hv_netvsc: Fix race of register_netdevice_notifier and VF registerHaiyang Zhang
If VF NIC is registered earlier, NETDEV_REGISTER event is replayed, but NETDEV_POST_INIT is not. Move register_netdevice_notifier() earlier, so the call back function is set before probing. Cc: stable@vger.kernel.org Fixes: e04e7a7bbd4b ("hv_netvsc: Fix a deadlock by getting rtnl lock earlier in netvsc_probe()") Reported-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> Reviewed-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-11-21hv_netvsc: fix race of netvsc and VF register_netdeviceHaiyang Zhang
The rtnl lock also needs to be held before rndis_filter_device_add() which advertises nvsp_2_vsc_capability / sriov bit, and triggers VF NIC offering and registering. If VF NIC finished register_netdev() earlier it may cause name based config failure. To fix this issue, move the call to rtnl_lock() before rndis_filter_device_add(), so VF will be registered later than netvsc / synthetic NIC, and gets a name numbered (ethX) after netvsc. Cc: stable@vger.kernel.org Fixes: e04e7a7bbd4b ("hv_netvsc: Fix a deadlock by getting rtnl lock earlier in netvsc_probe()") Reported-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Wojciech Drewek <wojciech.drewek@intel.com> Reviewed-by: Simon Horman <horms@kernel.org> Reviewed-by: Dexuan Cui <decui@microsoft.com> Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-10-11hv_netvsc: fix netvsc_send_completion to avoid multiple message length checksSonia Sharma
The switch statement in netvsc_send_completion() is incorrectly validating the length of incoming network packets by falling through to the next case. Avoid the fallthrough. Instead break after a case match and then process the complete() call. The current code has not caused any known failures. But nonetheless, the code should be corrected as a different ordering of the switch cases might cause a length check to fail when it should not. Signed-off-by: Sonia Sharma <sonia.sharma@linux.microsoft.com> Reviewed-by: Simon Horman <horms@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-08-03eth: add missing xdp.h includes in driversJakub Kicinski
Handful of drivers currently expect to get xdp.h by virtue of including netdevice.h. This will soon no longer be the case so add explicit includes. Reviewed-by: Wei Fang <wei.fang@nxp.com> Reviewed-by: Gerhard Engleder <gerhard@engleder-embedded.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Acked-by: Jesper Dangaard Brouer <hawk@kernel.org> Link: https://lore.kernel.org/r/20230803010230.1755386-2-kuba@kernel.org Signed-off-by: Martin KaFai Lau <martin.lau@kernel.org>
2023-06-07hv_netvsc: Allocate rx indirection table size dynamicallyShradha Gupta
Allocate the size of rx indirection table dynamically in netvsc from the value of size provided by OID_GEN_RECEIVE_SCALE_CAPABILITIES query instead of using a constant value of ITAB_NUM. Signed-off-by: Shradha Gupta <shradhagupta@linux.microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Tested-on: Ubuntu22 (azure VM, SKU size: Standard_F72s_v2) Testcases: 1. ethtool -x eth0 output 2. LISA testcase:PERF-NETWORK-TCP-THROUGHPUT-MULTICONNECTION-NTTTCP-Synthetic 3. LISA testcase:PERF-NETWORK-TCP-THROUGHPUT-MULTICONNECTION-NTTTCP-SRIOV Reviewed-by: Simon Horman <simon.horman@corigine.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2023-04-17hv_netvsc: Remove second mapping of send and recv buffersMichael Kelley
With changes to how Hyper-V guest VMs flip memory between private (encrypted) and shared (decrypted), creating a second kernel virtual mapping for shared memory is no longer necessary. Everything needed for the transition to shared is handled by set_memory_decrypted(). As such, remove the code to create and manage the second mapping for the pre-allocated send and recv buffers. This mapping is the last user of hv_map_memory()/hv_unmap_memory(), so delete these functions as well. Finally, hv_map_memory() is the last user of vmap_pfn() in Hyper-V guest code, so remove the Kconfig selection of VMAP_PFN. Signed-off-by: Michael Kelley <mikelley@microsoft.com> Reviewed-by: Tianyu Lan <Tianyu.Lan@microsoft.com> Link: https://lore.kernel.org/r/1679838727-87310-11-git-send-email-mikelley@microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org>
2023-02-21Merge tag 'net-next-6.3' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next Pull networking updates from Jakub Kicinski: "Core: - Add dedicated kmem_cache for typical/small skb->head, avoid having to access struct page at kfree time, and improve memory use. - Introduce sysctl to set default RPS configuration for new netdevs. - Define Netlink protocol specification format which can be used to describe messages used by each family and auto-generate parsers. Add tools for generating kernel data structures and uAPI headers. - Expose all net/core sysctls inside netns. - Remove 4s sleep in netpoll if carrier is instantly detected on boot. - Add configurable limit of MDB entries per port, and port-vlan. - Continue populating drop reasons throughout the stack. - Retire a handful of legacy Qdiscs and classifiers. Protocols: - Support IPv4 big TCP (TSO frames larger than 64kB). - Add IP_LOCAL_PORT_RANGE socket option, to control local port range on socket by socket basis. - Track and report in procfs number of MPTCP sockets used. - Support mixing IPv4 and IPv6 flows in the in-kernel MPTCP path manager. - IPv6: don't check net.ipv6.route.max_size and rely on garbage collection to free memory (similarly to IPv4). - Support Penultimate Segment Pop (PSP) flavor in SRv6 (RFC8986). - ICMP: add per-rate limit counters. - Add support for user scanning requests in ieee802154. - Remove static WEP support. - Support minimal Wi-Fi 7 Extremely High Throughput (EHT) rate reporting. - WiFi 7 EHT channel puncturing support (client & AP). BPF: - Add a rbtree data structure following the "next-gen data structure" precedent set by recently added linked list, that is, by using kfunc + kptr instead of adding a new BPF map type. - Expose XDP hints via kfuncs with initial support for RX hash and timestamp metadata. - Add BPF_F_NO_TUNNEL_KEY extension to bpf_skb_set_tunnel_key to better support decap on GRE tunnel devices not operating in collect metadata. - Improve x86 JIT's codegen for PROBE_MEM runtime error checks. - Remove the need for trace_printk_lock for bpf_trace_printk and bpf_trace_vprintk helpers. - Extend libbpf's bpf_tracing.h support for tracing arguments of kprobes/uprobes and syscall as a special case. - Significantly reduce the search time for module symbols by livepatch and BPF. - Enable cpumasks to be used as kptrs, which is useful for tracing programs tracking which tasks end up running on which CPUs in different time intervals. - Add support for BPF trampoline on s390x and riscv64. - Add capability to export the XDP features supported by the NIC. - Add __bpf_kfunc tag for marking kernel functions as kfuncs. - Add cgroup.memory=nobpf kernel parameter option to disable BPF memory accounting for container environments. Netfilter: - Remove the CLUSTERIP target. It has been marked as obsolete for years, and we still have WARN splats wrt races of the out-of-band /proc interface installed by this target. - Add 'destroy' commands to nf_tables. They are identical to the existing 'delete' commands, but do not return an error if the referenced object (set, chain, rule...) did not exist. Driver API: - Improve cpumask_local_spread() locality to help NICs set the right IRQ affinity on AMD platforms. - Separate C22 and C45 MDIO bus transactions more clearly. - Introduce new DCB table to control DSCP rewrite on egress. - Support configuration of Physical Layer Collision Avoidance (PLCA) Reconciliation Sublayer (RS) (802.3cg-2019). Modern version of shared medium Ethernet. - Support for MAC Merge layer (IEEE 802.3-2018 clause 99). Allowing preemption of low priority frames by high priority frames. - Add support for controlling MACSec offload using netlink SET. - Rework devlink instance refcounts to allow registration and de-registration under the instance lock. Split the code into multiple files, drop some of the unnecessarily granular locks and factor out common parts of netlink operation handling. - Add TX frame aggregation parameters (for USB drivers). - Add a new attr TCA_EXT_WARN_MSG to report TC (offload) warning messages with notifications for debug. - Allow offloading of UDP NEW connections via act_ct. - Add support for per action HW stats in TC. - Support hardware miss to TC action (continue processing in SW from a specific point in the action chain). - Warn if old Wireless Extension user space interface is used with modern cfg80211/mac80211 drivers. Do not support Wireless Extensions for Wi-Fi 7 devices at all. Everyone should switch to using nl80211 interface instead. - Improve the CAN bit timing configuration. Use extack to return error messages directly to user space, update the SJW handling, including the definition of a new default value that will benefit CAN-FD controllers, by increasing their oscillator tolerance. New hardware / drivers: - Ethernet: - nVidia BlueField-3 support (control traffic driver) - Ethernet support for imx93 SoCs - Motorcomm yt8531 gigabit Ethernet PHY - onsemi NCN26000 10BASE-T1S PHY (with support for PLCA) - Microchip LAN8841 PHY (incl. cable diagnostics and PTP) - Amlogic gxl MDIO mux - WiFi: - RealTek RTL8188EU (rtl8xxxu) - Qualcomm Wi-Fi 7 devices (ath12k) - CAN: - Renesas R-Car V4H Drivers: - Bluetooth: - Set Per Platform Antenna Gain (PPAG) for Intel controllers. - Ethernet NICs: - Intel (1G, igc): - support TSN / Qbv / packet scheduling features of i226 model - Intel (100G, ice): - use GNSS subsystem instead of TTY - multi-buffer XDP support - extend support for GPIO pins to E823 devices - nVidia/Mellanox: - update the shared buffer configuration on PFC commands - implement PTP adjphase function for HW offset control - TC support for Geneve and GRE with VF tunnel offload - more efficient crypto key management method - multi-port eswitch support - Netronome/Corigine: - add DCB IEEE support - support IPsec offloading for NFP3800 - Freescale/NXP (enetc): - support XDP_REDIRECT for XDP non-linear buffers - improve reconfig, avoid link flap and waiting for idle - support MAC Merge layer - Other NICs: - sfc/ef100: add basic devlink support for ef100 - ionic: rx_push mode operation (writing descriptors via MMIO) - bnxt: use the auxiliary bus abstraction for RDMA - r8169: disable ASPM and reset bus in case of tx timeout - cpsw: support QSGMII mode for J721e CPSW9G - cpts: support pulse-per-second output - ngbe: add an mdio bus driver - usbnet: optimize usbnet_bh() by avoiding unnecessary queuing - r8152: handle devices with FW with NCM support - amd-xgbe: support 10Mbps, 2.5GbE speeds and rx-adaptation - virtio-net: support multi buffer XDP - virtio/vsock: replace virtio_vsock_pkt with sk_buff - tsnep: XDP support - Ethernet high-speed switches: - nVidia/Mellanox (mlxsw): - add support for latency TLV (in FW control messages) - Microchip (sparx5): - separate explicit and implicit traffic forwarding rules, make the implicit rules always active - add support for egress DSCP rewrite - IS0 VCAP support (Ingress Classification) - IS2 VCAP filters (protos, L3 addrs, L4 ports, flags, ToS etc.) - ES2 VCAP support (Egress Access Control) - support for Per-Stream Filtering and Policing (802.1Q, 8.6.5.1) - Ethernet embedded switches: - Marvell (mv88e6xxx): - add MAB (port auth) offload support - enable PTP receive for mv88e6390 - NXP (ocelot): - support MAC Merge layer - support for the the vsc7512 internal copper phys - Microchip: - lan9303: convert to PHYLINK - lan966x: support TC flower filter statistics - lan937x: PTP support for KSZ9563/KSZ8563 and LAN937x - lan937x: support Credit Based Shaper configuration - ksz9477: support Energy Efficient Ethernet - other: - qca8k: convert to regmap read/write API, use bulk operations - rswitch: Improve TX timestamp accuracy - Intel WiFi (iwlwifi): - EHT (Wi-Fi 7) rate reporting - STEP equalizer support: transfer some STEP (connection to radio on platforms with integrated wifi) related parameters from the BIOS to the firmware. - Qualcomm 802.11ax WiFi (ath11k): - IPQ5018 support - Fine Timing Measurement (FTM) responder role support - channel 177 support - MediaTek WiFi (mt76): - per-PHY LED support - mt7996: EHT (Wi-Fi 7) support - Wireless Ethernet Dispatch (WED) reset support - switch to using page pool allocator - RealTek WiFi (rtw89): - support new version of Bluetooth co-existance - Mobile: - rmnet: support TX aggregation" * tag 'net-next-6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1872 commits) page_pool: add a comment explaining the fragment counter usage net: ethtool: fix __ethtool_dev_mm_supported() implementation ethtool: pse-pd: Fix double word in comments xsk: add linux/vmalloc.h to xsk.c sefltests: netdevsim: wait for devlink instance after netns removal selftest: fib_tests: Always cleanup before exit net/mlx5e: Align IPsec ASO result memory to be as required by hardware net/mlx5e: TC, Set CT miss to the specific ct action instance net/mlx5e: Rename CHAIN_TO_REG to MAPPED_OBJ_TO_REG net/mlx5: Refactor tc miss handling to a single function net/mlx5: Kconfig: Make tc offload depend on tc skb extension net/sched: flower: Support hardware miss to tc action net/sched: flower: Move filter handle initialization earlier net/sched: cls_api: Support hardware miss to tc action net/sched: Rename user cookie and act cookie sfc: fix builds without CONFIG_RTC_LIB sfc: clean up some inconsistent indentings net/mlx4_en: Introduce flexible array to silence overflow warning net: lan966x: Fix possible deadlock inside PTP net/ulp: Remove redundant ->clone() test in inet_clone_ulp(). ...
2023-02-21Merge tag 'hyperv-next-signed-20230220' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux Pull hyperv updates from Wei Liu: - allow Linux to run as the nested root partition for Microsoft Hypervisor (Jinank Jain and Nuno Das Neves) - clean up the return type of callback functions (Dawei Li) * tag 'hyperv-next-signed-20230220' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: x86/hyperv: Fix hv_get/set_register for nested bringup Drivers: hv: Make remove callback of hyperv driver void returned Drivers: hv: Enable vmbus driver for nested root partition x86/hyperv: Add an interface to do nested hypercalls Drivers: hv: Setup synic registers in case of nested root partition x86/hyperv: Add support for detecting nested hypervisor
2023-02-14hv_netvsc: Check status in SEND_RNDIS_PKT completion messageMichael Kelley
Completion responses to SEND_RNDIS_PKT messages are currently processed regardless of the status in the response, so that resources associated with the request are freed. While this is appropriate, code bugs that cause sending a malformed message, or errors on the Hyper-V host, go undetected. Fix this by checking the status and outputting a rate-limited message if there is an error. Signed-off-by: Michael Kelley <mikelley@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://lore.kernel.org/r/1676264881-48928-1-git-send-email-mikelley@microsoft.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-02-13hv_netvsc: add missing NETDEV_XDP_ACT_NDO_XMIT xdp-features flagLorenzo Bianconi
Add missing ndo_xdp_xmit bit to xdp_features capability flag. Fixes: 66c0e13ad236 ("drivers: net: turn on XDP features") Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Link: https://lore.kernel.org/r/8e3747018f0fd0b5d6e6b9aefe8d9448ca3a3288.1676195726.git.lorenzo@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-02-10Daniel Borkmann says:Jakub Kicinski
==================== pull-request: bpf-next 2023-02-11 We've added 96 non-merge commits during the last 14 day(s) which contain a total of 152 files changed, 4884 insertions(+), 962 deletions(-). There is a minor conflict in drivers/net/ethernet/intel/ice/ice_main.c between commit 5b246e533d01 ("ice: split probe into smaller functions") from the net-next tree and commit 66c0e13ad236 ("drivers: net: turn on XDP features") from the bpf-next tree. Remove the hunk given ice_cfg_netdev() is otherwise there a 2nd time, and add XDP features to the existing ice_cfg_netdev() one: [...] ice_set_netdev_features(netdev); netdev->xdp_features = NETDEV_XDP_ACT_BASIC | NETDEV_XDP_ACT_REDIRECT | NETDEV_XDP_ACT_XSK_ZEROCOPY; ice_set_ops(netdev); [...] Stephen's merge conflict mail: https://lore.kernel.org/bpf/20230207101951.21a114fa@canb.auug.org.au/ The main changes are: 1) Add support for BPF trampoline on s390x which finally allows to remove many test cases from the BPF CI's DENYLIST.s390x, from Ilya Leoshkevich. 2) Add multi-buffer XDP support to ice driver, from Maciej Fijalkowski. 3) Add capability to export the XDP features supported by the NIC. Along with that, add a XDP compliance test tool, from Lorenzo Bianconi & Marek Majtyka. 4) Add __bpf_kfunc tag for marking kernel functions as kfuncs, from David Vernet. 5) Add a deep dive documentation about the verifier's register liveness tracking algorithm, from Eduard Zingerman. 6) Fix and follow-up cleanups for resolve_btfids to be compiled as a host program to avoid cross compile issues, from Jiri Olsa & Ian Rogers. 7) Batch of fixes to the BPF selftest for xdp_hw_metadata which resulted when testing on different NICs, from Jesper Dangaard Brouer. 8) Fix libbpf to better detect kernel version code on Debian, from Hao Xiang. 9) Extend libbpf to add an option for when the perf buffer should wake up, from Jon Doron. 10) Follow-up fix on xdp_metadata selftest to just consume on TX completion, from Stanislav Fomichev. 11) Extend the kfuncs.rst document with description on kfunc lifecycle & stability expectations, from David Vernet. 12) Fix bpftool prog profile to skip attaching to offline CPUs, from Tonghao Zhang. ==================== Link: https://lore.kernel.org/r/20230211002037.8489-1-daniel@iogearbox.net Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-02-07hv_netvsc: Allocate memory in netvsc_dma_map() with GFP_ATOMICMichael Kelley
Memory allocations in the network transmit path must use GFP_ATOMIC so they won't sleep. Reported-by: Paolo Abeni <pabeni@redhat.com> Link: https://lore.kernel.org/lkml/8a4d08f94d3e6fe8b6da68440eaa89a088ad84f9.camel@redhat.com/ Fixes: 846da38de0e8 ("net: netvsc: Add Isolation VM support for netvsc driver") Cc: stable@vger.kernel.org Signed-off-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/1675714317-48577-1-git-send-email-mikelley@microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2023-02-02drivers: net: turn on XDP featuresMarek Majtyka
A summary of the flags being set for various drivers is given below. Note that XDP_F_REDIRECT_TARGET and XDP_F_FRAG_TARGET are features that can be turned off and on at runtime. This means that these flags may be set and unset under RTNL lock protection by the driver. Hence, READ_ONCE must be used by code loading the flag value. Also, these flags are not used for synchronization against the availability of XDP resources on a device. It is merely a hint, and hence the read may race with the actual teardown of XDP resources on the device. This may change in the future, e.g. operations taking a reference on the XDP resources of the driver, and in turn inhibiting turning off this flag. However, for now, it can only be used as a hint to check whether device supports becoming a redirection target. Turn 'hw-offload' feature flag on for: - netronome (nfp) - netdevsim. Turn 'native' and 'zerocopy' features flags on for: - intel (i40e, ice, ixgbe, igc) - mellanox (mlx5). - stmmac - netronome (nfp) Turn 'native' features flags on for: - amazon (ena) - broadcom (bnxt) - freescale (dpaa, dpaa2, enetc) - funeth - intel (igb) - marvell (mvneta, mvpp2, octeontx2) - mellanox (mlx4) - mtk_eth_soc - qlogic (qede) - sfc - socionext (netsec) - ti (cpsw) - tap - tsnep - veth - xen - virtio_net. Turn 'basic' (tx, pass, aborted and drop) features flags on for: - netronome (nfp) - cavium (thunder) - hyperv. Turn 'redirect_target' feature flag on for: - amanzon (ena) - broadcom (bnxt) - freescale (dpaa, dpaa2) - intel (i40e, ice, igb, ixgbe) - ti (cpsw) - marvell (mvneta, mvpp2) - sfc - socionext (netsec) - qlogic (qede) - mellanox (mlx5) - tap - veth - virtio_net - xen Reviewed-by: Gerhard Engleder <gerhard@engleder-embedded.com> Reviewed-by: Simon Horman <simon.horman@corigine.com> Acked-by: Stanislav Fomichev <sdf@google.com> Acked-by: Jakub Kicinski <kuba@kernel.org> Co-developed-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Signed-off-by: Kumar Kartikeya Dwivedi <memxor@gmail.com> Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org> Signed-off-by: Marek Majtyka <alardam@gmail.com> Link: https://lore.kernel.org/r/3eca9fafb308462f7edb1f58e451d59209aa07eb.1675245258.git.lorenzo@kernel.org Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2023-02-02hv_netvsc: Fix missed pagebuf entries in netvsc_dma_map/unmap()Michael Kelley
netvsc_dma_map() and netvsc_dma_unmap() currently check the cp_partial flag and adjust the page_count so that pagebuf entries for the RNDIS portion of the message are skipped when it has already been copied into a send buffer. But this adjustment has already been made by code in netvsc_send(). The duplicate adjustment causes some pagebuf entries to not be mapped. In a normal VM, this doesn't break anything because the mapping doesn’t change the PFN. But in a Confidential VM, dma_map_single() does bounce buffering and provides a different PFN. Failing to do the mapping causes the wrong PFN to be passed to Hyper-V, and various errors ensue. Fix this by removing the duplicate adjustment in netvsc_dma_map() and netvsc_dma_unmap(). Fixes: 846da38de0e8 ("net: netvsc: Add Isolation VM support for netvsc driver") Cc: stable@vger.kernel.org Signed-off-by: Michael Kelley <mikelley@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://lore.kernel.org/r/1675135986-254490-1-git-send-email-mikelley@microsoft.com Signed-off-by: Paolo Abeni <pabeni@redhat.com>
2023-01-17Drivers: hv: Make remove callback of hyperv driver void returnedDawei Li
Since commit fc7a6209d571 ("bus: Make remove callback return void") forces bus_type::remove be void-returned, it doesn't make much sense for any bus based driver implementing remove callbalk to return non-void to its caller. As such, change the remove function for Hyper-V VMBus based drivers to return void. Signed-off-by: Dawei Li <set_pte_at@outlook.com> Link: https://lore.kernel.org/r/TYCP286MB2323A93C55526E4DF239D3ACCAFA9@TYCP286MB2323.JPNP286.PROD.OUTLOOK.COM Signed-off-by: Wei Liu <wei.liu@kernel.org>
2022-10-28net: Remove the obsolte u64_stats_fetch_*_irq() users (drivers).Thomas Gleixner
Now that the 32bit UP oddity is gone and 32bit uses always a sequence count, there is no need for the fetch_irq() variants anymore. Convert to the regular interface. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-10-15net: hv_netvsc: Fix a warning triggered by memcpy in rndis_filterCezar Bulinaru
memcpy: detected field-spanning write (size 168) of single field "(void *)&request->response_msg + (sizeof(struct rndis_message) - sizeof(union rndis_message_container)) + sizeof(*req_id)" at drivers/net/hyperv/rndis_filter.c:338 (size 40) RSP: 0018:ffffc90000144de0 EFLAGS: 00010282 RAX: 0000000000000000 RBX: ffff8881766b4000 RCX: 0000000000000000 RDX: 0000000000000102 RSI: 0000000000009ffb RDI: 00000000ffffffff RBP: ffffc90000144e38 R08: 0000000000000000 R09: 00000000ffffdfff R10: ffffc90000144c48 R11: ffffffff82f56ac8 R12: ffff8881766b403c R13: 00000000000000a8 R14: ffff888100b75000 R15: ffff888179301d00 FS: 0000000000000000(0000) GS:ffff8884d6280000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f8b024c418 CR3: 0000000176548001 CR4: 00000000003706e0 Call Trace: <IRQ> ? _raw_spin_unlock_irqrestore+0x27/0x50 netvsc_poll+0x556/0x940 [hv_netvsc] __napi_poll+0x2e/0x170 net_rx_action+0x299/0x2f0 __do_softirq+0xed/0x2ef __irq_exit_rcu+0x9f/0x110 irq_exit_rcu+0xe/0x20 sysvec_hyperv_callback+0xb0/0xd0 </IRQ> <TASK> asm_sysvec_hyperv_callback+0x1b/0x20 RIP: 0010:native_safe_halt+0xb/0x10 Fixes: A warning triggered when the response message len exceeds the size of rndis_message. Inside the rndis_request structure these fields are however followed by a RNDIS_EXT_LEN padding so it is safe to use unsafe_memcpy. Reviewed-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Cezar Bulinaru <cbulinaru@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-10-07hv_netvsc: Fix race between VF offering and VF association message from hostGaurav Kohli
During vm boot, there might be possibility that vf registration call comes before the vf association from host to vm. And this might break netvsc vf path, To prevent the same block vf registration until vf bind message comes from host. Cc: stable@vger.kernel.org Fixes: 00d7ddba11436 ("hv_netvsc: pair VF based on serial number") Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Gaurav Kohli <gauravkohli@linux.microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-28net: drop the weight argument from netif_napi_addJakub Kicinski
We tell driver developers to always pass NAPI_POLL_WEIGHT as the weight to netif_napi_add(). This may be confusing to newcomers, drop the weight argument, those who really need to tweak the weight can use netif_napi_add_weight(). Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for CAN Link: https://lore.kernel.org/r/20220927132753.750069-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-08-31net: move from strlcpy with unused retval to strscpyWolfram Sang
Follow the advice of the below link and prefer 'strscpy' in this subsystem. Conversion is 1:1 because the return value is not used. Generated by a coccinelle script. Link: https://lore.kernel.org/r/CAHk-=wgfRnXz0W3D37d01q3JFkr_i_uTL=V6A6G1oUZcprmknw@mail.gmail.com/ Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com> Acked-by: Marc Kleine-Budde <mkl@pengutronix.de> # for CAN Link: https://lore.kernel.org/r/20220830201457.7984-1-wsa+renesas@sang-engineering.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-23Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
drivers/net/ethernet/cadence/macb_main.c 5cebb40bc955 ("net: macb: Fix PTP one step sync support") 138badbc21a0 ("net: macb: use NAPI for TX completion path") https://lore.kernel.org/all/20220523111021.31489367@canb.auug.org.au/ net/smc/af_smc.c 75c1edf23b95 ("net/smc: postpone sk_refcnt increment in connect()") 3aba103006bc ("net/smc: align the connect behaviour with TCP") https://lore.kernel.org/all/20220524114408.4bf1af38@canb.auug.org.au/ Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-20hv_netvsc: Fix potential dereference of NULL pointerYongzhi Liu
The return value of netvsc_devinfo_get() needs to be checked to avoid use of NULL pointer in case of an allocation failure. Fixes: 0efeea5fb153 ("hv_netvsc: Add the support of hibernation") Signed-off-by: Yongzhi Liu <lyz_cs@pku.edu.cn> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://lore.kernel.org/r/1652962188-129281-1-git-send-email-lyz_cs@pku.edu.cn Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-05-16net: allow gso_max_size to exceed 65536Alexander Duyck
The code for gso_max_size was added originally to allow for debugging and workaround of buggy devices that couldn't support TSO with blocks 64K in size. The original reason for limiting it to 64K was because that was the existing limits of IPv4 and non-jumbogram IPv6 length fields. With the addition of Big TCP we can remove this limit and allow the value to potentially go up to UINT_MAX and instead be limited by the tso_max_size value. So in order to support this we need to go through and clean up the remaining users of the gso_max_size value so that the values will cap at 64K for non-TCPv6 flows. In addition we can clean up the GSO_MAX_SIZE value so that 64K becomes GSO_LEGACY_MAX_SIZE and UINT_MAX will now be the upper limit for GSO_MAX_SIZE. v6: (edumazet) fixed a compile error if CONFIG_IPV6=n, in a new sk_trim_gso_size() helper. netif_set_tso_max_size() caps the requested TSO size with GSO_MAX_SIZE. Signed-off-by: Alexander Duyck <alexanderduyck@fb.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-05-06net: make drivers set the TSO limit not the GSO limitJakub Kicinski
Drivers should call the TSO setting helper, GSO is controllable by user space. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-04-11hv_netvsc: Add support for XDP_REDIRECTHaiyang Zhang
Handle XDP_REDIRECT action in netvsc driver. Also, transparently pass ndo_xdp_xmit to VF when available. Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://lore.kernel.org/r/1649362894-20077-1-git-send-email-haiyangz@microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-04-07hv_netvsc: Print value of invalid ID in netvsc_send_{completion,tx_complete}()Andrea Parri (Microsoft)
That being useful for debugging purposes. Notice that the packet descriptor is in "private" guest memory, so that Hyper-V can not tamper with it. While at it, remove two unnecessary u64-casts. Signed-off-by: Andrea Parri (Microsoft) <parri.andrea@gmail.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-04-07net: hyperv: remove use of bpf_op_tJakub Kicinski
Following patch will hide that typedef. There seems to be no strong reason for hyperv to use it, so let's not. Acked-by: Wei Liu <wei.liu@kernel.org> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-03-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
No conflicts. Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-03-15hv_netvsc: Add check for kvmalloc_arrayJiasheng Jiang
As the potential failure of the kvmalloc_array(), it should be better to check and restore the 'data' if fails in order to avoid the dereference of the NULL pointer. Fixes: 6ae746711263 ("hv_netvsc: Add per-cpu ethtool stats for netvsc") Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> Link: https://lore.kernel.org/r/20220314020125.2365084-1-jiasheng@iscas.ac.cn Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-03-11net: netvsc: remove break after returnSaurabh Sengar
In function netvsc_process_raw_pkt for VM_PKT_DATA_USING_XFER_PAGES case there is already a 'return' statement which results 'break' as dead code Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://lore.kernel.org/r/1646933534-29493-1-git-send-email-ssengar@linux.microsoft.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2022-02-09Netvsc: Call hv_unmap_memory() in the netvsc_device_remove()Tianyu Lan
netvsc_device_remove() calls vunmap() inside which should not be called in the interrupt context. Current code calls hv_unmap_memory() in the free_netvsc_device() which is rcu callback and maybe called in the interrupt context. This will trigger BUG_ON(in_interrupt()) in the vunmap(). Fix it via moving hv_unmap_memory() to netvsc_device_ remove(). Fixes: 846da38de0e8 ("net: netvsc: Add Isolation VM support for netvsc driver") Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2022-01-16Merge tag 'hyperv-next-signed-20220114' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux Pull hyperv updates from Wei Liu: - More patches for Hyper-V isolation VM support (Tianyu Lan) - Bug fixes and clean-up patches from various people * tag 'hyperv-next-signed-20220114' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: scsi: storvsc: Fix storvsc_queuecommand() memory leak x86/hyperv: Properly deal with empty cpumasks in hyperv_flush_tlb_multi() Drivers: hv: vmbus: Initialize request offers message for Isolation VM scsi: storvsc: Fix unsigned comparison to zero swiotlb: Add CONFIG_HAS_IOMEM check around swiotlb_mem_remap() x86/hyperv: Fix definition of hv_ghcb_pg variable Drivers: hv: Fix definition of hypercall input & output arg variables net: netvsc: Add Isolation VM support for netvsc driver scsi: storvsc: Add Isolation VM support for storvsc driver hyper-v: Enable swiotlb bounce buffer for Isolation VM x86/hyper-v: Add hyperv Isolation VM check in the cc_platform_has() swiotlb: Add swiotlb bounce buffer remap function for HV IVM
2021-12-20net: netvsc: Add Isolation VM support for netvsc driverTianyu Lan
In Isolation VM, all shared memory with host needs to mark visible to host via hvcall. vmbus_establish_gpadl() has already done it for netvsc rx/tx ring buffer. The page buffer used by vmbus_sendpacket_ pagebuffer() stills need to be handled. Use DMA API to map/umap these memory during sending/receiving packet and Hyper-V swiotlb bounce buffer dma address will be returned. The swiotlb bounce buffer has been masked to be visible to host during boot up. rx/tx ring buffer is allocated via vzalloc() and they need to be mapped into unencrypted address space(above vTOM) before sharing with host and accessing. Add hv_map/unmap_memory() to map/umap rx /tx ring buffer. Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Reviewed-by: Michael Kelley <mikelley@microsoft.com> Link: https://lore.kernel.org/r/20211213071407.314309-6-ltykernel@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org>
2021-12-13bpf: Let bpf_warn_invalid_xdp_action() report more infoPaolo Abeni
In non trivial scenarios, the action id alone is not sufficient to identify the program causing the warning. Before the previous patch, the generated stack-trace pointed out at least the involved device driver. Let's additionally include the program name and id, and the relevant device name. If the user needs additional infos, he can fetch them via a kernel probe, leveraging the arguments added here. Signed-off-by: Paolo Abeni <pabeni@redhat.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Toke Høiland-Jørgensen <toke@redhat.com> Link: https://lore.kernel.org/bpf/ddb96bb975cbfddb1546cf5da60e77d5100b533c.1638189075.git.pabeni@redhat.com
2021-11-22hv_netvsc: Use bitmap_zalloc() when applicableChristophe JAILLET
'send_section_map' is a bitmap. So use 'bitmap_zalloc()' to simplify code, improve the semantic and avoid some open-coded arithmetic in allocator arguments. Also change the corresponding 'kfree()' into 'bitmap_free()' to keep consistency. While at it, change an '== NULL' test into a '!'. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-11-22ethtool: extend ringparam setting/getting API with rx_buf_lenHao Chen
Add two new parameters kernel_ringparam and extack for .get_ringparam and .set_ringparam to extend more ring params through netlink. Signed-off-by: Hao Chen <chenhao288@hisilicon.com> Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-11-02Merge tag 'hyperv-next-signed-20211102' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux Pull hyperv updates from Wei Liu: - Initial patch set for Hyper-V isolation VM support (Tianyu Lan) - Fix a warning on preemption (Vitaly Kuznetsov) - A bunch of misc cleanup patches * tag 'hyperv-next-signed-20211102' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: x86/hyperv: Protect set_hv_tscchange_cb() against getting preempted Drivers: hv : vmbus: Adding NULL pointer check x86/hyperv: Remove duplicate include x86/hyperv: Remove duplicated include in hv_init Drivers: hv: vmbus: Remove unused code to check for subchannels Drivers: hv: vmbus: Initialize VMbus ring buffer for Isolation VM Drivers: hv: vmbus: Add SNP support for VMbus channel initiate message x86/hyperv: Add ghcb hvcall support for SNP VM x86/hyperv: Add Write/Read MSR registers via ghcb page Drivers: hv: vmbus: Mark vmbus ring buffer visible to host in Isolation VM x86/hyperv: Add new hvcall guest address host visibility support x86/hyperv: Initialize shared memory boundary in the Isolation VM. x86/hyperv: Initialize GHCB page in Isolation VM
2021-10-28Drivers: hv: vmbus: Mark vmbus ring buffer visible to host in Isolation VMTianyu Lan
Mark vmbus ring buffer visible with set_memory_decrypted() when establish gpadl handle. Reviewed-by: Michael Kelley <mikelley@microsoft.com> Signed-off-by: Tianyu Lan <Tianyu.Lan@microsoft.com> Link: https://lore.kernel.org/r/20211025122116.264793-5-ltykernel@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org>
2021-10-14hv_netvsc: Add comment of netvsc_xdp_xmit()Jiasheng Jiang
Adding comment to avoid the misusing of netvsc_xdp_xmit(). Otherwise the value of skb->queue_mapping could be 0 and then the return value of skb_get_rx_queue() could be MAX_U16 cause by overflow. Signed-off-by: Jiasheng Jiang <jiasheng@iscas.ac.cn> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Link: https://lore.kernel.org/r/1634174786-1810351-1-git-send-email-jiasheng@iscas.ac.cn Signed-off-by: Jakub Kicinski <kuba@kernel.org>
generated by cgit (git 2.34.1) at 2024-07-02 19:54:12 +0000