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2021-04-20Merge tag 'mac80211-next-for-net-next-2021-04-20' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next Johannes Berg says: ==================== Another set of updates, all over the map: * set sk_pacing_shift for 802.3->802.11 encap offload * some monitor support for 802.11->802.3 decap offload * HE (802.11ax) spec updates * userspace API for TDLS HE support * along with various other small features, cleanups and fixups ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-19nl80211: Add new RSNXE related nl80211 extended featuresIlan Peer
Draft P802.11ax_D2.5 defines the following capabilities that can be negotiated using RSNXE capabilities: - Secure LTF measurement exchange protocol. - Secure RTT measurement exchange protocol. - Management frame protection for all management frames exchanged during the negotiation and range measurement procedure. Extend the nl80211 API to allow drivers to declare support for these new capabilities as part of extended feature. Signed-off-by: Ilan Peer <ilan.peer@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Link: https://lore.kernel.org/r/iwlwifi.20210409123755.8280e31d8091.Ifcb29f84f432290338f80c8378aa5c9e0a390c93@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-04-19nl80211/cfg80211: add a flag to negotiate for LMR feedback in NDP rangingAvraham Stern
Add a flag that indicates that the ISTA shall indicate support for LMR feedback in NDP ranging negotiation. Signed-off-by: Avraham Stern <avraham.stern@intel.com> Signed-off-by: Luca Coelho <luciano.coelho@intel.com> Link: https://lore.kernel.org/r/iwlwifi.20210409123755.eff546283504.I2606161e700ac24d94d0b50c8edcdedd4c0395c2@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-04-17Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c - keep the ZC code, drop the code related to reinit net/bridge/netfilter/ebtables.c - fix build after move to net_generic Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-04-16ethtool: add interface to read RMON statsJakub Kicinski
Most devices maintain RMON (RFC 2819) stats - particularly the "histogram" of packets received by size. Unlike other RFCs which duplicate IEEE stats, the short/oversized frame counters in RMON don't seem to match IEEE stats 1-to-1 either, so expose those, too. Do not expose basic packet, CRC errors etc - those are already otherwise covered. Because standard defines packet ranges only up to 1518, and everything above that should theoretically be "oversized" - devices often create their own ranges. Going beyond what the RFC defines - expose the "histogram" in the Tx direction (assume for now that the ranges will be the same). Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-16ethtool: add interface to read standard MAC Ctrl statsJakub Kicinski
Number of devices maintains the standard-based MAC control counters for control frames. Add a API for those. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-16ethtool: add interface to read standard MAC statsJakub Kicinski
Most of the MAC statistics are included in struct rtnl_link_stats64, but some fields are aggregated. Besides it's good to expose these clearly hardware stats separately. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-16ethtool: add a new command for reading standard statsJakub Kicinski
Add an interface for reading standard stats, including stats which don't have a corresponding control interface. Start with IEEE 802.3 PHY stats. There seems to be only one stat to expose there. Define API to not require user space changes when new stats or groups are added. Groups are based on bitset, stats have a string set associated. v1: wrap stats in a nest Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-15ethtool: add FEC statisticsJakub Kicinski
Similarly to pause statistics add stats for FEC. The IEEE standard mandates two sets of counters: - 30.5.1.1.17 aFECCorrectedBlocks - 30.5.1.1.18 aFECUncorrectableBlocks where block is a block of bits FEC operates on. Each of these counters is defined per lane (PCS instance). Multiple vendors provide number of corrected _bits_ rather than/as well as blocks. This set adds the 2 standard-based block counters and a extra one for corrected bits. Counters are exposed to user space via netlink in new attributes. Each attribute carries an array of u64s, first element is the total count, and the following ones are a per-lane break down. Much like with pause stats the operation will not fail when driver does not implement the get_fec_stats callback (nor can the driver fail the operation by returning an error). If stats can't be reported the relevant attributes will be empty. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-14Merge tag 'dmaengine-fix-5.12' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine Pull dmaengine fixes from Vinod Koul: "A couple of dmaengine driver fixes for: - race and descriptor issue for xilinx driver - fix interrupt handling, wq state & cleanup, field sizes for completion, msix permissions for idxd driver - runtime pm fix for tegra driver - double free fix in dma_async_device_register" * tag 'dmaengine-fix-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: dmaengine: idxd: fix wq cleanup of WQCFG registers dmaengine: idxd: clear MSIX permission entry on shutdown dmaengine: plx_dma: add a missing put_device() on error path dmaengine: tegra20: Fix runtime PM imbalance on error dmaengine: Fix a double free in dma_async_device_register dmaengine: dw: Make it dependent to HAS_IOMEM dmaengine: idxd: fix wq size store permission state dmaengine: idxd: fix opcap sysfs attribute output dmaengine: idxd: fix delta_rec and crc size field for completion record dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback dmaengine: xilinx: dpdma: Fix race condition in done IRQ dmaengine: xilinx: dpdma: Fix descriptor issuing on video group
2021-04-12dmaengine: idxd: fix delta_rec and crc size field for completion recordDave Jiang
The delta_rec_size and crc_val in the completion record should be 32bits and not 16bits. Fixes: bfe1d56091c1 ("dmaengine: idxd: Init and probe for Intel data accelerators") Reported-by: Nikhil Rao <nikhil.rao@intel.com> Signed-off-by: Dave Jiang <dave.jiang@intel.com> Link: https://lore.kernel.org/r/161645618572.2003490.14466173451736323035.stgit@djiang5-desk3.ch.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-04-11ethtool: Allow network drivers to dump arbitrary EEPROM dataVladyslav Tarasiuk
Define get_module_eeprom_by_page() ethtool callback and implement netlink infrastructure. get_module_eeprom_by_page() allows network drivers to dump a part of module's EEPROM specified by page and bank numbers along with offset and length. It is effectively a netlink replacement for get_module_info() and get_module_eeprom() pair, which is needed due to emergence of complex non-linear EEPROM layouts. Signed-off-by: Vladyslav Tarasiuk <vladyslavt@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-09Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netJakub Kicinski
Conflicts: MAINTAINERS - keep Chandrasekar drivers/net/ethernet/mellanox/mlx5/core/en_main.c - simple fix + trust the code re-added to param.c in -next is fine include/linux/bpf.h - trivial include/linux/ethtool.h - trivial, fix kdoc while at it include/linux/skmsg.h - move to relevant place in tcp.c, comment re-wrapped net/core/skmsg.c - add the sk = sk // sk = NULL around calls net/tipc/crypto.c - trivial Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2021-04-09Merge tag 'net-5.12-rc7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net Pull networking fixes from Jakub Kicinski: "Networking fixes for 5.12-rc7, including fixes from can, ipsec, mac80211, wireless, and bpf trees. No scary regressions here or in the works, but small fixes for 5.12 changes keep coming. Current release - regressions: - virtio: do not pull payload in skb->head - virtio: ensure mac header is set in virtio_net_hdr_to_skb() - Revert "net: correct sk_acceptq_is_full()" - mptcp: revert "mptcp: provide subflow aware release function" - ethernet: lan743x: fix ethernet frame cutoff issue - dsa: fix type was not set for devlink port - ethtool: remove link_mode param and derive link params from driver - sched: htb: fix null pointer dereference on a null new_q - wireless: iwlwifi: Fix softirq/hardirq disabling in iwl_pcie_enqueue_hcmd() - wireless: iwlwifi: fw: fix notification wait locking - wireless: brcmfmac: p2p: Fix deadlock introduced by avoiding the rtnl dependency Current release - new code bugs: - napi: fix hangup on napi_disable for threaded napi - bpf: take module reference for trampoline in module - wireless: mt76: mt7921: fix airtime reporting and related tx hangs - wireless: iwlwifi: mvm: rfi: don't lock mvm->mutex when sending config command Previous releases - regressions: - rfkill: revert back to old userspace API by default - nfc: fix infinite loop, refcount & memory leaks in LLCP sockets - let skb_orphan_partial wake-up waiters - xfrm/compat: Cleanup WARN()s that can be user-triggered - vxlan, geneve: do not modify the shared tunnel info when PMTU triggers an ICMP reply - can: fix msg_namelen values depending on CAN_REQUIRED_SIZE - can: uapi: mark union inside struct can_frame packed - sched: cls: fix action overwrite reference counting - sched: cls: fix err handler in tcf_action_init() - ethernet: mlxsw: fix ECN marking in tunnel decapsulation - ethernet: nfp: Fix a use after free in nfp_bpf_ctrl_msg_rx - ethernet: i40e: fix receiving of single packets in xsk zero-copy mode - ethernet: cxgb4: avoid collecting SGE_QBASE regs during traffic Previous releases - always broken: - bpf: Refuse non-O_RDWR flags in BPF_OBJ_GET - bpf: Refcount task stack in bpf_get_task_stack - bpf, x86: Validate computation of branch displacements - ieee802154: fix many similar syzbot-found bugs - fix NULL dereferences in netlink attribute handling - reject unsupported operations on monitor interfaces - fix error handling in llsec_key_alloc() - xfrm: make ipv4 pmtu check honor ip header df - xfrm: make hash generation lock per network namespace - xfrm: esp: delete NETIF_F_SCTP_CRC bit from features for esp offload - ethtool: fix incorrect datatype in set_eee ops - xdp: fix xdp_return_frame() kernel BUG throw for page_pool memory model - openvswitch: fix send of uninitialized stack memory in ct limit reply Misc: - udp: add get handling for UDP_GRO sockopt" * tag 'net-5.12-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (182 commits) net: fix hangup on napi_disable for threaded napi net: hns3: Trivial spell fix in hns3 driver lan743x: fix ethernet frame cutoff issue net: ipv6: check for validity before dereferencing cfg->fc_nlinfo.nlh net: dsa: lantiq_gswip: Configure all remaining GSWIP_MII_CFG bits net: dsa: lantiq_gswip: Don't use PHY auto polling net: sched: sch_teql: fix null-pointer dereference ipv6: report errors for iftoken via netlink extack net: sched: fix err handler in tcf_action_init() net: sched: fix action overwrite reference counting Revert "net: sched: bump refcount for new action in ACT replace mode" ice: fix memory leak of aRFS after resuming from suspend i40e: Fix sparse warning: missing error code 'err' i40e: Fix sparse error: 'vsi->netdev' could be null i40e: Fix sparse error: uninitialized symbol 'ring' i40e: Fix sparse errors in i40e_txrx.c i40e: Fix parameters in aq_get_phy_register() nl80211: fix beacon head validation bpf, x86: Validate computation of branch displacements for x86-32 bpf, x86: Validate computation of branch displacements for x86-64 ...
2021-04-08Merge tag 'for-net-next-2021-04-08' of ↵David S. Miller
git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth-next Luiz Augusto von Dentz says: ==================== bluetooth-next pull request for net-next: - Proper support for BCM4330 and BMC4334 - Various improvements for firmware download of Intel controllers - Update management interface revision to 20 - Support for AOSP HCI vendor commands - Initial Virtio support ==================== Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-08net: phy: add constants for 2.5G and 5G speed in PCS speed registerMarek Behún
Add constants for 2.5G and 5G speed in PCS speed register into mdio.h. Signed-off-by: Marek Behún <kabel@kernel.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-08nl80211: Add interface to indicate TDLS peer's HE capabilityVamsi Krishna
Enhance enum nl80211_tdls_peer_capability to configure TDLS peer's support for HE mode. Userspace decodes the TDLS setup response frame and confugures the HE mode support to driver if the peer has advertized HE mode support in TDLS setup response frame. The driver uses this information to decide whether to include HE operation IE in TDLS setup confirmation frame. Signed-off-by: Vamsi Krishna <vamsin@codeaurora.org> Link: https://lore.kernel.org/r/1614696636-30144-1-git-send-email-vamsin@codeaurora.org Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-04-08Bluetooth: Add support for virtio transport driverMarcel Holtmann
This adds support for Bluetooth HCI transport over virtio. Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
2021-04-08nl80211: better document CMD_ROAM behaviorJames Prestwood
The docs were very sparse with how exactly CMD_ROAM should be used. Specifically related to BSS information normally obtained through a user space scan. Signed-off-by: James Prestwood <prestwoj@gmail.com> Link: https://lore.kernel.org/r/20210311230333.103934-1-prestwoj@gmail.com Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-04-08rfkill: revert back to old userspace API by defaultJohannes Berg
Recompiling with the new extended version of struct rfkill_event broke systemd in *two* ways: - It used "sizeof(struct rfkill_event)" to read the event, but then complained if it actually got something != 8, this broke it on new kernels (that include the updated API); - It used sizeof(struct rfkill_event) to write a command, but didn't implement the intended expansion protocol where the kernel returns only how many bytes it accepted, and errored out due to the unexpected smaller size on kernels that didn't include the updated API. Even though systemd has now been fixed, that fix may not be always deployed, and other applications could potentially have similar issues. As such, in the interest of avoiding regressions, revert the default API "struct rfkill_event" back to the original size. Instead, add a new "struct rfkill_event_ext" that extends it by the new field, and even more clearly document that applications should be prepared for extensions in two ways: * write might only accept fewer bytes on older kernels, and will return how many to let userspace know which data may have been ignored; * read might return anything between 8 (the original size) and whatever size the application sized its buffer at, indicating how much event data was supported by the kernel. Perhaps that will help avoid such issues in the future and we won't have to come up with another version of the struct if we ever need to extend it again. Applications that want to take advantage of the new field will have to be modified to use struct rfkill_event_ext instead now, which comes with the danger of them having already been updated to use it from 'struct rfkill_event', but I found no evidence of that, and it's still relatively new. Cc: stable@vger.kernel.org # 5.11 Reported-by: Takashi Iwai <tiwai@suse.de> Tested-by: Sedat Dilek <sedat.dilek@gmail.com> # LLVM/Clang v12.0.0-r4 (x86-64) Link: https://lore.kernel.org/r/20210319232510.f1a139cfdd9c.Ic5c7c9d1d28972059e132ea653a21a427c326678@changeid Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2021-04-07ethtool: fix kdoc in headersJakub Kicinski
Fix remaining issues with kdoc in the ethtool headers. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-07ethtool: document reserved fields in the uAPIJakub Kicinski
Add a note on expected handling of reserved fields, and references to all kdocs. This fixes a bunch of kdoc warnings. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-07ethtool: un-kdocify extended link stateJakub Kicinski
Extended link state structures and enums use kdoc headers but then do not describe any of the members. Convert to normal comments. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-02Merge tag 'block-5.12-2021-04-02' of git://git.kernel.dk/linux-blockLinus Torvalds
Pull block fixes from Jens Axboe: - Remove comment that never came to fruition in 22 years of development (Christoph) - Remove unused request flag (Christoph) - Fix for null_blk fake timeout handling (Damien) - Fix for IOCB_NOWAIT being ignored for O_DIRECT on raw bdevs (Pavel) - Error propagation fix for multiple split bios (Yufen) * tag 'block-5.12-2021-04-02' of git://git.kernel.dk/linux-block: block: remove the unused RQF_ALLOCED flag block: update a few comments in uapi/linux/blkpg.h block: don't ignore REQ_NOWAIT for direct IO null_blk: fix command timeout completion handling block: only update parent bi_status when bio fail
2021-04-02mptcp: add mptcp reset option supportFlorian Westphal
The MPTCP reset option allows to carry a mptcp-specific error code that provides more information on the nature of a connection reset. Reset option data received gets stored in the subflow context so it can be sent to userspace via the 'subflow closed' netlink event. When a subflow is closed, the desired error code that should be sent to the peer is also placed in the subflow context structure. If a reset is sent before subflow establishment could complete, e.g. on HMAC failure during an MP_JOIN operation, the mptcp skb extension is used to store the reset information. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-02Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-nextDavid S. Miller
Alexei Starovoitov says: ==================== pull-request: bpf-next 2021-04-01 The following pull-request contains BPF updates for your *net-next* tree. We've added 68 non-merge commits during the last 7 day(s) which contain a total of 70 files changed, 2944 insertions(+), 1139 deletions(-). The main changes are: 1) UDP support for sockmap, from Cong. 2) Verifier merge conflict resolution fix, from Daniel. 3) xsk selftests enhancements, from Maciej. 4) Unstable helpers aka kernel func calling, from Martin. 5) Batches ops for LPM map, from Pedro. 6) Fix race in bpf_get_local_storage, from Yonghong. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2021-04-02block: update a few comments in uapi/linux/blkpg.hChristoph Hellwig
The big top of the file comment talk about grand plans that never happened, so remove them to not confuse the readers. Also mark the devname and volname fields as ignored as they were never used by the kernel. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
2021-04-01sock_map: Introduce BPF_SK_SKB_VERDICTCong Wang
Reusing BPF_SK_SKB_STREAM_VERDICT is possible but its name is confusing and more importantly we still want to distinguish them from user-space. So we can just reuse the stream verdict code but introduce a new type of eBPF program, skb_verdict. Users are not allowed to attach stream_verdict and skb_verdict programs to the same map. Signed-off-by: Cong Wang <cong.wang@bytedance.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: John Fastabend <john.fastabend@gmail.com> Link: https://lore.kernel.org/bpf/20210331023237.41094-10-xiyou.wangcong@gmail.com
2021-03-31ethtool: support FEC settings over netlinkJakub Kicinski
Add FEC API to netlink. This is not a 1-to-1 conversion. FEC settings already depend on link modes to tell user which modes are supported. Take this further an use link modes for manual configuration. Old struct ethtool_fecparam is still used to talk to the drivers, so we need to translate back and forth. We can revisit the internal API if number of FEC encodings starts to grow. Enforce only one active FEC bit (by using a bit position rather than another mask). Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-30ICMPV6: add support for RFC 8335 PROBEAndreas Roeseler
Add definitions for the ICMPV6 type of Extended Echo Request and Extended Echo Reply, as defined by sections 2 and 3 of RFC 8335. Signed-off-by: Andreas Roeseler <andreas.a.roeseler@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-30icmp: add support for RFC 8335 PROBEAndreas Roeseler
Add definitions for PROBE ICMP types and codes. Add AFI definitions for IP and IPV6 as specified by IANA Add a struct to represent the additional header when probing by IP address (ctype == 3) for use in parsing incoming PROBE messages Add a struct to represent the entire Interface Identification Object (IIO) section of an incoming PROBE packet Signed-off-by: Andreas Roeseler <andreas.a.roeseler@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-29can: uapi: can.h: mark union inside struct can_frame packedMarc Kleine-Budde
In commit ea7800565a12 ("can: add optional DLC element to Classical CAN frame structure") the struct can_frame::can_dlc was put into an anonymous union with another u8 variable. For various reasons some members in struct can_frame and canfd_frame including the first 8 byes of data are expected to have the same memory layout. This is enforced by a BUILD_BUG_ON check in af_can.c. Since the above mentioned commit this check fails on ARM kernels compiled with the ARM OABI (which means CONFIG_AEABI not set). In this case -mabi=apcs-gnu is passed to the compiler, which leads to a structure size boundary of 32, instead of 8 compared to CONFIG_AEABI enabled. This means the the union in struct can_frame takes 4 bytes instead of the expected 1. Rong Chen illustrates the problem with pahole in the ARM OABI case: | struct can_frame { | canid_t can_id; /* 0 4 */ | union { | __u8 len; /* 4 1 */ | __u8 can_dlc; /* 4 1 */ | }; /* 4 4 */ | __u8 __pad; /* 8 1 */ | __u8 __res0; /* 9 1 */ | __u8 len8_dlc; /* 10 1 */ | | /* XXX 5 bytes hole, try to pack */ | | __u8 data[8] | __attribute__((__aligned__(8))); /* 16 8 */ | | /* size: 24, cachelines: 1, members: 6 */ | /* sum members: 19, holes: 1, sum holes: 5 */ | /* forced alignments: 1, forced holes: 1, sum forced holes: 5 */ | /* last cacheline: 24 bytes */ | } __attribute__((__aligned__(8))); Marking the anonymous union as __attribute__((packed)) fixes the BUILD_BUG_ON problem on these compilers. Fixes: ea7800565a12 ("can: add optional DLC element to Classical CAN frame structure") Reported-by: kernel test robot <lkp@intel.com> Suggested-by: Rong Chen <rong.a.chen@intel.com> Link: https://lore.kernel.org/linux-can/2c82ec23-3551-61b5-1bd8-178c3407ee83@hartkopp.net/ Link: https://lore.kernel.org/r/20210325125850.1620-3-socketcan@hartkopp.net Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
2021-03-26bpf: Support bpf program calling kernel functionMartin KaFai Lau
This patch adds support to BPF verifier to allow bpf program calling kernel function directly. The use case included in this set is to allow bpf-tcp-cc to directly call some tcp-cc helper functions (e.g. "tcp_cong_avoid_ai()"). Those functions have already been used by some kernel tcp-cc implementations. This set will also allow the bpf-tcp-cc program to directly call the kernel tcp-cc implementation, For example, a bpf_dctcp may only want to implement its own dctcp_cwnd_event() and reuse other dctcp_*() directly from the kernel tcp_dctcp.c instead of reimplementing (or copy-and-pasting) them. The tcp-cc kernel functions mentioned above will be white listed for the struct_ops bpf-tcp-cc programs to use in a later patch. The white listed functions are not bounded to a fixed ABI contract. Those functions have already been used by the existing kernel tcp-cc. If any of them has changed, both in-tree and out-of-tree kernel tcp-cc implementations have to be changed. The same goes for the struct_ops bpf-tcp-cc programs which have to be adjusted accordingly. This patch is to make the required changes in the bpf verifier. First change is in btf.c, it adds a case in "btf_check_func_arg_match()". When the passed in "btf->kernel_btf == true", it means matching the verifier regs' states with a kernel function. This will handle the PTR_TO_BTF_ID reg. It also maps PTR_TO_SOCK_COMMON, PTR_TO_SOCKET, and PTR_TO_TCP_SOCK to its kernel's btf_id. In the later libbpf patch, the insn calling a kernel function will look like: insn->code == (BPF_JMP | BPF_CALL) insn->src_reg == BPF_PSEUDO_KFUNC_CALL /* <- new in this patch */ insn->imm == func_btf_id /* btf_id of the running kernel */ [ For the future calling function-in-kernel-module support, an array of module btf_fds can be passed at the load time and insn->off can be used to index into this array. ] At the early stage of verifier, the verifier will collect all kernel function calls into "struct bpf_kfunc_desc". Those descriptors are stored in "prog->aux->kfunc_tab" and will be available to the JIT. Since this "add" operation is similar to the current "add_subprog()" and looking for the same insn->code, they are done together in the new "add_subprog_and_kfunc()". In the "do_check()" stage, the new "check_kfunc_call()" is added to verify the kernel function call instruction: 1. Ensure the kernel function can be used by a particular BPF_PROG_TYPE. A new bpf_verifier_ops "check_kfunc_call" is added to do that. The bpf-tcp-cc struct_ops program will implement this function in a later patch. 2. Call "btf_check_kfunc_args_match()" to ensure the regs can be used as the args of a kernel function. 3. Mark the regs' type, subreg_def, and zext_dst. At the later do_misc_fixups() stage, the new fixup_kfunc_call() will replace the insn->imm with the function address (relative to __bpf_call_base). If needed, the jit can find the btf_func_model by calling the new bpf_jit_find_kfunc_model(prog, insn). With the imm set to the function address, "bpftool prog dump xlated" will be able to display the kernel function calls the same way as it displays other bpf helper calls. gpl_compatible program is required to call kernel function. This feature currently requires JIT. The verifier selftests are adjusted because of the changes in the verbose log in add_subprog_and_kfunc(). Signed-off-by: Martin KaFai Lau <kafai@fb.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20210325015142.1544736-1-kafai@fb.com
2021-03-26ethtool: document the enum values not definesJakub Kicinski
kdoc does not have good support for documenting defines, and we can't abuse the enum documentation because it generates warnings. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-26ethtool: fec: add note about reuse of reservedJakub Kicinski
struct ethtool_fecparam::reserved can't be used in SET, because ethtool user space doesn't zero-initialize the structure. Make this clear. Suggested-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-25ethtool: clarify the ethtool FEC interfaceJakub Kicinski
The definition of the FEC driver interface is quite unclear. Improve the documentation. This is based on current driver and user space code, as well as the discussions about the interface: RFC v1 (24 Oct 2016): https://lore.kernel.org/netdev/1477363849-36517-1-git-send-email-vidya@cumulusnetworks.com/ - this version has the autoneg field - no active_fec field - none vs off confusion is already present RFC v2 (10 Feb 2017): https://lore.kernel.org/netdev/1486727004-11316-1-git-send-email-vidya@cumulusnetworks.com/ - autoneg removed - active_fec added v1 (10 Feb 2017): https://lore.kernel.org/netdev/1486751311-42019-1-git-send-email-vidya@cumulusnetworks.com/ - no changes in the code v1 (24 Jun 2017): https://lore.kernel.org/netdev/1498331985-8525-1-git-send-email-roopa@cumulusnetworks.com/ - include in tree user v2 (27 Jul 2017): https://lore.kernel.org/netdev/1501199248-24695-1-git-send-email-roopa@cumulusnetworks.com/ Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-25ethtool: fec: sanitize ethtool_fecparam->active_fecJakub Kicinski
struct ethtool_fecparam::active_fec is a GET-only field, all in-tree drivers correctly ignore it on SET. Clear the field on SET to avoid any confusion. Again, we can't reject non-zero now since ethtool user space does not zero-init the param correctly. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-25ethtool: fec: sanitize ethtool_fecparam->reservedJakub Kicinski
struct ethtool_fecparam::reserved is never looked at by the core. Make sure it's actually 0. Unfortunately we can't return an error because old ethtool doesn't zero-initialize the structure for SET. On GET we can be more verbose, there are no in tree (ab)users. Fix up the kdoc on the structure. Remove the mention of FEC bypass. Seems like a niche thing to configure in the first place. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-25ethtool: fec: remove long structure descriptionJakub Kicinski
Digging through the mailing list archive @autoneg was part of the first version of the RFC, this left over comment was pointed out twice in review but wasn't removed. The sentence is an exact copy-paste from pauseparam. Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-25ethtool: fec: fix typo in kdocJakub Kicinski
s/porte/the port/ Signed-off-by: Jakub Kicinski <kuba@kernel.org> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-25Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netDavid S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-24Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds
Pull networking fixes from David Miller: "Various fixes, all over: 1) Fix overflow in ptp_qoriq_adjfine(), from Yangbo Lu. 2) Always store the rx queue mapping in veth, from Maciej Fijalkowski. 3) Don't allow vmlinux btf in map_create, from Alexei Starovoitov. 4) Fix memory leak in octeontx2-af from Colin Ian King. 5) Use kvalloc in bpf x86 JIT for storing jit'd addresses, from Yonghong Song. 6) Fix tx ptp stats in mlx5, from Aya Levin. 7) Check correct ip version in tun decap, fropm Roi Dayan. 8) Fix rate calculation in mlx5 E-Switch code, from arav Pandit. 9) Work item memork leak in mlx5, from Shay Drory. 10) Fix ip6ip6 tunnel crash with bpf, from Daniel Borkmann. 11) Lack of preemptrion awareness in macvlan, from Eric Dumazet. 12) Fix data race in pxa168_eth, from Pavel Andrianov. 13) Range validate stab in red_check_params(), from Eric Dumazet. 14) Inherit vlan filtering setting properly in b53 driver, from Florian Fainelli. 15) Fix rtnl locking in igc driver, from Sasha Neftin. 16) Pause handling fixes in igc driver, from Muhammad Husaini Zulkifli. 17) Missing rtnl locking in e1000_reset_task, from Vitaly Lifshits. 18) Use after free in qlcnic, from Lv Yunlong. 19) fix crash in fritzpci mISDN, from Tong Zhang. 20) Premature rx buffer reuse in igb, from Li RongQing. 21) Missing termination of ip[a driver message handler arrays, from Alex Elder. 22) Fix race between "x25_close" and "x25_xmit"/"x25_rx" in hdlc_x25 driver, from Xie He. 23) Use after free in c_can_pci_remove(), from Tong Zhang. 24) Uninitialized variable use in nl80211, from Jarod Wilson. 25) Off by one size calc in bpf verifier, from Piotr Krysiuk. 26) Use delayed work instead of deferrable for flowtable GC, from Yinjun Zhang. 27) Fix infinite loop in NPC unmap of octeontx2 driver, from Hariprasad Kelam. 28) Fix being unable to change MTU of dwmac-sun8i devices due to lack of fifo sizes, from Corentin Labbe. 29) DMA use after free in r8169 with WoL, fom Heiner Kallweit. 30) Mismatched prototypes in isdn-capi, from Arnd Bergmann. 31) Fix psample UAPI breakage, from Ido Schimmel" * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (171 commits) psample: Fix user API breakage math: Export mul_u64_u64_div_u64 ch_ktls: fix enum-conversion warning octeontx2-af: Fix memory leak of object buf ptp_qoriq: fix overflow in ptp_qoriq_adjfine() u64 calcalation net: bridge: don't notify switchdev for local FDB addresses net/sched: act_ct: clear post_ct if doing ct_clear net: dsa: don't assign an error value to tag_ops isdn: capi: fix mismatched prototypes net/mlx5: SF, do not use ecpu bit for vhca state processing net/mlx5e: Fix division by 0 in mlx5e_select_queue net/mlx5e: Fix error path for ethtool set-priv-flag net/mlx5e: Offload tuple rewrite for non-CT flows net/mlx5e: Allow to match on MPLS parameters only for MPLS over UDP net/mlx5: Add back multicast stats for uplink representor net: ipconfig: ic_dev can be NULL in ic_close_devs MAINTAINERS: Combine "QLOGIC QLGE 10Gb ETHERNET DRIVER" sections into one docs: networking: Fix a typo r8169: fix DMA being used after buffer free if WoL is enabled net: ipa: fix init header command validation ...
2021-03-24psample: Fix user API breakageIdo Schimmel
Cited commit added a new attribute before the existing group reference count attribute, thereby changing its value and breaking existing applications on new kernels. Before: # psample -l libpsample ERROR psample_group_foreach: failed to recv message: Operation not supported After: # psample -l Group Num Refcount Group Seq 1 1 0 Fix by restoring the value of the old attribute and remove the misleading comments from the enumerator to avoid future bugs. Cc: stable@vger.kernel.org Fixes: d8bed686ab96 ("net: psample: Add tunnel support") Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reported-by: Adiel Bidani <adielb@nvidia.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-24Add Open Routing Protocol ID to `rtnetlink.h`Cooper Lees
- The Open Routing (Open/R) network protocol netlink handler uses ID 99 - Will also add to `/etc/iproute2/rt_protos` once this is accepted - For more information: https://github.com/facebook/openr Signed-off-by: From: Cooper Lees <me@cooperlees.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-16Merge tag 'fuse-fixes-5.12-rc4' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse Pull fuse fixes from Miklos Szeredi: "Fix a deadlock and a couple of other bugs" * tag 'fuse-fixes-5.12-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: fuse: 32-bit user space ioctl compat for fuse device virtiofs: Fail dax mount if device does not support it fuse: fix live lock in fuse_iget()
2021-03-16fuse: 32-bit user space ioctl compat for fuse deviceAlessio Balsini
With a 64-bit kernel build the FUSE device cannot handle ioctl requests coming from 32-bit user space. This is due to the ioctl command translation that generates different command identifiers that thus cannot be used for direct comparisons without proper manipulation. Explicitly extract type and number from the ioctl command to enable 32-bit user space compatibility on 64-bit kernel builds. Signed-off-by: Alessio Balsini <balsini@android.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
2021-03-14psample: Add additional metadata attributesIdo Schimmel
Extend psample to report the following attributes when available: * Output traffic class as a 16-bit value * Output traffic class occupancy in bytes as a 64-bit value * End-to-end latency of the packet in nanoseconds resolution * Software timestamp in nanoseconds resolution (always available) * Packet's protocol. Needed for packet dissection in user space (always available) Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Jiri Pirko <jiri@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-13net/sched: act_police: add support for packet-per-second policingBaowen Zheng
Allow a policer action to enforce a rate-limit based on packets-per-second, configurable using a packet-per-second rate and burst parameters. e.g. tc filter add dev tap1 parent ffff: u32 match \ u32 0 0 police pkts_rate 3000 pkts_burst 1000 Testing was unable to uncover a performance impact of this change on existing features. Signed-off-by: Baowen Zheng <baowen.zheng@corigine.com> Signed-off-by: Simon Horman <simon.horman@netronome.com> Signed-off-by: Louis Peens <louis.peens@netronome.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-11nexthop: Add netlink defines and enumerators for resilient NH groupsIdo Schimmel
- RTM_NEWNEXTHOP et.al. that handle resilient groups will have a new nested attribute, NHA_RES_GROUP, whose elements are attributes NHA_RES_GROUP_*. - RTM_NEWNEXTHOPBUCKET et.al. is a suite of new messages that will currently serve only for dumping of individual buckets of resilient next hop groups. For nexthop group buckets, these messages will carry a nested attribute NHA_RES_BUCKET, whose elements are attributes NHA_RES_BUCKET_*. There are several reasons why a new suite of messages is created for nexthop buckets instead of overloading the information on the existing RTM_{NEW,DEL,GET}NEXTHOP messages. First, a nexthop group can contain a large number of nexthop buckets (4k is not unheard of). This imposes limits on the amount of information that can be encoded for each nexthop bucket given a netlink message is limited to 64k bytes. Second, while RTM_NEWNEXTHOPBUCKET is only used for notifications at this point, in the future it can be extended to provide user space with control over nexthop buckets configuration. - The new group type is NEXTHOP_GRP_TYPE_RES. Note that nexthop code is adjusted to bounce groups with that type for now. Signed-off-by: Ido Schimmel <idosch@nvidia.com> Reviewed-by: Petr Machata <petrm@nvidia.com> Reviewed-by: David Ahern <dsahern@kernel.org> Signed-off-by: Petr Machata <petrm@nvidia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-10Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller
Daniel Borkmann says: ==================== pull-request: bpf 2021-03-10 The following pull-request contains BPF updates for your *net* tree. We've added 8 non-merge commits during the last 5 day(s) which contain a total of 11 files changed, 136 insertions(+), 17 deletions(-). The main changes are: 1) Reject bogus use of vmlinux BTF as map/prog creation BTF, from Alexei Starovoitov. 2) Fix allocation failure splat in x86 JIT for large progs. Also fix overwriting percpu cgroup storage from tracing programs when nested, from Yonghong Song. 3) Fix rx queue retrieval in XDP for multi-queue veth, from Maciej Fijalkowski. 4) Fix bpf_check_mtu() helper API before freeze to have mtu_len as custom skb/xdp L3 input length, from Jesper Dangaard Brouer. 5) Fix inode_storage's lookup_elem return value upon having bad fd, from Tal Lossos. 6) Fix bpftool and libbpf cross-build on MacOS, from Georgi Valkov. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
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