user/sven/linux.git/net/socket.c, branch v5.15.57

net: fix SOF_TIMESTAMPING_BIND_PHC to work with multiple sockets

2022-01-27T10:03:52Z

[ Upstream commit 007747a984ea5e895b7d8b056b24ebf431e1e71d ] When multiple sockets using the SOF_TIMESTAMPING_BIND_PHC flag received a packet with a hardware timestamp (e.g. multiple PTP instances in different PTP domains using the UDPv4/v6 multicast or L2 transport), the timestamps received on some sockets were corrupted due to repeated conversion of the same timestamp (by the same or different vclocks). Fix ptp_convert_timestamp() to not modify the shared skb timestamp and return the converted timestamp as a ktime_t instead. If the conversion fails, return 0 to not confuse the application with timestamps corresponding to an unexpected PHC. Fixes: d7c088265588 ("net: socket: support hardware timestamp conversion to PHC bound") Signed-off-by: Miroslav Lichvar Cc: Yangbo Lu Cc: Richard Cochran Acked-by: Richard Cochran Signed-off-by: David S. Miller Signed-off-by: Sasha Levin

Merge tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next

2021-08-31T23:43:06Z

Pull networking updates from Jakub Kicinski: "Core: - Enable memcg accounting for various networking objects. BPF: - Introduce bpf timers. - Add perf link and opaque bpf_cookie which the program can read out again, to be used in libbpf-based USDT library. - Add bpf_task_pt_regs() helper to access user space pt_regs in kprobes, to help user space stack unwinding. - Add support for UNIX sockets for BPF sockmap. - Extend BPF iterator support for UNIX domain sockets. - Allow BPF TCP congestion control progs and bpf iterators to call bpf_setsockopt(), e.g. to switch to another congestion control algorithm. Protocols: - Support IOAM Pre-allocated Trace with IPv6. - Support Management Component Transport Protocol. - bridge: multicast: add vlan support. - netfilter: add hooks for the SRv6 lightweight tunnel driver. - tcp: - enable mid-stream window clamping (by user space or BPF) - allow data-less, empty-cookie SYN with TFO_SERVER_COOKIE_NOT_REQD - more accurate DSACK processing for RACK-TLP - mptcp: - add full mesh path manager option - add partial support for MP_FAIL - improve use of backup subflows - optimize option processing - af_unix: add OOB notification support. - ipv6: add IFLA_INET6_RA_MTU to expose MTU value advertised by the router. - mac80211: Target Wake Time support in AP mode. - can: j1939: extend UAPI to notify about RX status. Driver APIs: - Add page frag support in page pool API. - Many improvements to the DSA (distributed switch) APIs. - ethtool: extend IRQ coalesce uAPI with timer reset modes. - devlink: control which auxiliary devices are created. - Support CAN PHYs via the generic PHY subsystem. - Proper cross-chip support for tag_8021q. - Allow TX forwarding for the software bridge data path to be offloaded to capable devices. Drivers: - veth: more flexible channels number configuration. - openvswitch: introduce per-cpu upcall dispatch. - Add internet mix (IMIX) mode to pktgen. - Transparently handle XDP operations in the bonding driver. - Add LiteETH network driver. - Renesas (ravb): - support Gigabit Ethernet IP - NXP Ethernet switch (sja1105): - fast aging support - support for "H" switch topologies - traffic termination for ports under VLAN-aware bridge - Intel 1G Ethernet - support getcrosststamp() with PCIe PTM (Precision Time Measurement) for better time sync - support Credit-Based Shaper (CBS) offload, enabling HW traffic prioritization and bandwidth reservation - Broadcom Ethernet (bnxt) - support pulse-per-second output - support larger Rx rings - Mellanox Ethernet (mlx5) - support ethtool RSS contexts and MQPRIO channel mode - support LAG offload with bridging - support devlink rate limit API - support packet sampling on tunnels - Huawei Ethernet (hns3): - basic devlink support - add extended IRQ coalescing support - report extended link state - Netronome Ethernet (nfp): - add conntrack offload support - Broadcom WiFi (brcmfmac): - add WPA3 Personal with FT to supported cipher suites - support 43752 SDIO device - Intel WiFi (iwlwifi): - support scanning hidden 6GHz networks - support for a new hardware family (Bz) - Xen pv driver: - harden netfront against malicious backends - Qualcomm mobile - ipa: refactor power management and enable automatic suspend - mhi: move MBIM to WWAN subsystem interfaces Refactor: - Ambient BPF run context and cgroup storage cleanup. - Compat rework for ndo_ioctl. Old code removal: - prism54 remove the obsoleted driver, deprecated by the p54 driver. - wan: remove sbni/granch driver" * tag 'net-next-5.15' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (1715 commits) net: Add depends on OF_NET for LiteX's LiteETH ipv6: seg6: remove duplicated include net: hns3: remove unnecessary spaces net: hns3: add some required spaces net: hns3: clean up a type mismatch warning net: hns3: refine function hns3_set_default_feature() ipv6: remove duplicated 'net/lwtunnel.h' include net: w5100: check return value after calling platform_get_resource() net/mlxbf_gige: Make use of devm_platform_ioremap_resourcexxx() net: mdio: mscc-miim: Make use of the helper function devm_platform_ioremap_resource() net: mdio-ipq4019: Make use of devm_platform_ioremap_resource() fou: remove sparse errors ipv4: fix endianness issue in inet_rtm_getroute_build_skb() octeontx2-af: Set proper errorcode for IPv4 checksum errors octeontx2-af: Fix static code analyzer reported issues octeontx2-af: Fix mailbox errors in nix_rss_flowkey_cfg octeontx2-af: Fix loop in free and unmap counter af_unix: fix potential NULL deref in unix_dgram_connect() dpaa2-eth: Replace strlcpy with strscpy octeontx2-af: Use NDC TX for transmit packet data ...

Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net

2021-08-31T16:06:04Z

include/linux/netdevice.h net/socket.c d0efb16294d1 ("net: don't unconditionally copy_from_user a struct ifreq for socket ioctls") 876f0bf9d0d5 ("net: socket: simplify dev_ifconf handling") 29c4964822aa ("net: socket: rework compat_ifreq_ioctl()") Signed-off-by: Jakub Kicinski

net: don't unconditionally copy_from_user a struct ifreq for socket ioctls

2021-08-27T08:40:25Z

A common implementation of isatty(3) involves calling a ioctl passing a dummy struct argument and checking whether the syscall failed -- bionic and glibc use TCGETS (passing a struct termios), and musl uses TIOCGWINSZ (passing a struct winsize). If the FD is a socket, we will copy sizeof(struct ifreq) bytes of data from the argument and return -EFAULT if that fails. The result is that the isatty implementations may return a non-POSIX-compliant value in errno in the case where part of the dummy struct argument is inaccessible, as both struct termios and struct winsize are smaller than struct ifreq (at least on arm64). Although there is usually enough stack space following the argument on the stack that this did not present a practical problem up to now, with MTE stack instrumentation it's more likely for the copy to fail, as the memory following the struct may have a different tag. Fix the problem by adding an early check for whether the ioctl is a valid socket ioctl, and return -ENOTTY if it isn't. Fixes: 44c02a2c3dc5 ("dev_ioctl(): move copyin/copyout to callers") Link: https://linux-review.googlesource.com/id/I869da6cf6daabc3e4b7b82ac979683ba05e27d4d Signed-off-by: Peter Collingbourne Cc: # 4.19 Signed-off-by: David S. Miller

net: add accept helper not installing fd

2021-08-25T12:36:56Z

Introduce and reuse a helper that acts similarly to __sys_accept4_file() but returns struct file instead of installing file descriptor. Will be used by io_uring. Signed-off-by: Pavel Begunkov Acked-by: Jakub Kicinski Signed-off-by: Jens Axboe Acked-by: David S. Miller Link: https://lore.kernel.org/r/c57b9e8e818d93683a3d24f8ca50ca038d1da8c4.1629888991.git.asml.silence@gmail.com Signed-off-by: Jens Axboe

mctp: Add MCTP base

2021-07-29T14:06:49Z

Add basic Kconfig, an initial (empty) af_mctp source object, and {AF,PF}_MCTP definitions, and the required definitions for a new protocol type. Signed-off-by: Jeremy Kerr Signed-off-by: David S. Miller

net: bridge: move bridge ioctls out of .ndo_do_ioctl

2021-07-27T19:11:45Z

Working towards obsoleting the .ndo_do_ioctl operation entirely, stop passing the SIOCBRADDIF/SIOCBRDELIF device ioctl commands into this callback. My first attempt was to add another ndo_siocbr() callback, but as there is only a single driver that takes these commands and there is already a hook mechanism to call directly into this driver, extend this hook instead, and use it for both the deviceless and the device specific ioctl commands. Cc: Roopa Prabhu Cc: Nikolay Aleksandrov Cc: bridge@lists.linux-foundation.org Signed-off-by: Arnd Bergmann Signed-off-by: David S. Miller

net: socket: return changed ifreq from SIOCDEVPRIVATE

2021-07-27T19:11:45Z

Some drivers that use SIOCDEVPRIVATE ioctl commands modify the ifreq structure and expect it to be passed back to user space, which has never really happened for compat mode because the calling these drivers through ndo_do_ioctl requires overwriting the ifr_data pointer. Now that all drivers are converted to ndo_siocdevprivate, change it to handle this correctly in both compat and native mode. Signed-off-by: Arnd Bergmann Signed-off-by: David S. Miller

dev_ioctl: pass SIOCDEVPRIVATE data separately

2021-07-27T19:11:44Z

The compat handlers for SIOCDEVPRIVATE are incorrect for any driver that passes data as part of struct ifreq rather than as an ifr_data pointer, or that passes data back this way, since the compat_ifr_data_ioctl() helper overwrites the ifr_data pointer and does not copy anything back out. Since all drivers using devprivate commands are now converted to the new .ndo_siocdevprivate callback, fix this by adding the missing piece and passing the pointer separately the whole way. This further unifies the native and compat logic for socket ioctls, as the new code now passes the correct pointer as well as the correct data for both native and compat ioctls. Signed-off-by: Arnd Bergmann Signed-off-by: David S. Miller

net: socket: rework compat_ifreq_ioctl()

2021-07-23T13:20:25Z

compat_ifreq_ioctl() is one of the last users of copy_in_user() and compat_alloc_user_space(), as it attempts to convert the 'struct ifreq' arguments from 32-bit to 64-bit format as used by dev_ioctl() and a couple of socket family specific interpretations. The current implementation works correctly when calling dev_ioctl(), inet_ioctl(), ieee802154_sock_ioctl(), atalk_ioctl(), qrtr_ioctl() and packet_ioctl(). The ioctl handlers for x25, netrom, rose and x25 do not interpret the arguments and only block the corresponding commands, so they do not care. For af_inet6 and af_decnet however, the compat conversion is slightly incorrect, as it will copy more data than the native handler accesses, both of them use a structure that is shorter than ifreq. Replace the copy_in_user() conversion with a pair of accessor functions to read and write the ifreq data in place with the correct length where needed, while leaving the other ones to copy the (already compatible) structures directly. Signed-off-by: Arnd Bergmann Reviewed-by: Christoph Hellwig Signed-off-by: David S. Miller