From 5b7c4cabbb65f5c469464da6c5f614cbd7f730f2 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Tue, 21 Feb 2023 18:24:12 -0800 Subject: Merge tag 'net-next-6.3' of 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(). ... --- include/net/bluetooth/rfcomm.h | 375 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 375 insertions(+) create mode 100644 include/net/bluetooth/rfcomm.h (limited to 'include/net/bluetooth/rfcomm.h') diff --git a/include/net/bluetooth/rfcomm.h b/include/net/bluetooth/rfcomm.h new file mode 100644 index 000000000..99d26879b --- /dev/null +++ b/include/net/bluetooth/rfcomm.h @@ -0,0 +1,375 @@ +/* + RFCOMM implementation for Linux Bluetooth stack (BlueZ) + Copyright (C) 2002 Maxim Krasnyansky + Copyright (C) 2002 Marcel Holtmann + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License version 2 as + published by the Free Software Foundation; + + THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS + OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. + IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) AND AUTHOR(S) BE LIABLE FOR ANY + CLAIM, OR ANY SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + + ALL LIABILITY, INCLUDING LIABILITY FOR INFRINGEMENT OF ANY PATENTS, + COPYRIGHTS, TRADEMARKS OR OTHER RIGHTS, RELATING TO USE OF THIS + SOFTWARE IS DISCLAIMED. +*/ + +#include + +#ifndef __RFCOMM_H +#define __RFCOMM_H + +#define RFCOMM_CONN_TIMEOUT (HZ * 30) +#define RFCOMM_DISC_TIMEOUT (HZ * 20) +#define RFCOMM_AUTH_TIMEOUT (HZ * 25) +#define RFCOMM_IDLE_TIMEOUT (HZ * 2) + +#define RFCOMM_DEFAULT_MTU 127 +#define RFCOMM_DEFAULT_CREDITS 7 + +#define RFCOMM_MAX_CREDITS 40 + +#define RFCOMM_SKB_HEAD_RESERVE 8 +#define RFCOMM_SKB_TAIL_RESERVE 2 +#define RFCOMM_SKB_RESERVE (RFCOMM_SKB_HEAD_RESERVE + RFCOMM_SKB_TAIL_RESERVE) + +#define RFCOMM_SABM 0x2f +#define RFCOMM_DISC 0x43 +#define RFCOMM_UA 0x63 +#define RFCOMM_DM 0x0f +#define RFCOMM_UIH 0xef + +#define RFCOMM_TEST 0x08 +#define RFCOMM_FCON 0x28 +#define RFCOMM_FCOFF 0x18 +#define RFCOMM_MSC 0x38 +#define RFCOMM_RPN 0x24 +#define RFCOMM_RLS 0x14 +#define RFCOMM_PN 0x20 +#define RFCOMM_NSC 0x04 + +#define RFCOMM_V24_FC 0x02 +#define RFCOMM_V24_RTC 0x04 +#define RFCOMM_V24_RTR 0x08 +#define RFCOMM_V24_IC 0x40 +#define RFCOMM_V24_DV 0x80 + +#define RFCOMM_RPN_BR_2400 0x0 +#define RFCOMM_RPN_BR_4800 0x1 +#define RFCOMM_RPN_BR_7200 0x2 +#define RFCOMM_RPN_BR_9600 0x3 +#define RFCOMM_RPN_BR_19200 0x4 +#define RFCOMM_RPN_BR_38400 0x5 +#define RFCOMM_RPN_BR_57600 0x6 +#define RFCOMM_RPN_BR_115200 0x7 +#define RFCOMM_RPN_BR_230400 0x8 + +#define RFCOMM_RPN_DATA_5 0x0 +#define RFCOMM_RPN_DATA_6 0x1 +#define RFCOMM_RPN_DATA_7 0x2 +#define RFCOMM_RPN_DATA_8 0x3 + +#define RFCOMM_RPN_STOP_1 0 +#define RFCOMM_RPN_STOP_15 1 + +#define RFCOMM_RPN_PARITY_NONE 0x0 +#define RFCOMM_RPN_PARITY_ODD 0x1 +#define RFCOMM_RPN_PARITY_EVEN 0x3 +#define RFCOMM_RPN_PARITY_MARK 0x5 +#define RFCOMM_RPN_PARITY_SPACE 0x7 + +#define RFCOMM_RPN_FLOW_NONE 0x00 + +#define RFCOMM_RPN_XON_CHAR 0x11 +#define RFCOMM_RPN_XOFF_CHAR 0x13 + +#define RFCOMM_RPN_PM_BITRATE 0x0001 +#define RFCOMM_RPN_PM_DATA 0x0002 +#define RFCOMM_RPN_PM_STOP 0x0004 +#define RFCOMM_RPN_PM_PARITY 0x0008 +#define RFCOMM_RPN_PM_PARITY_TYPE 0x0010 +#define RFCOMM_RPN_PM_XON 0x0020 +#define RFCOMM_RPN_PM_XOFF 0x0040 +#define RFCOMM_RPN_PM_FLOW 0x3F00 + +#define RFCOMM_RPN_PM_ALL 0x3F7F + +struct rfcomm_hdr { + u8 addr; + u8 ctrl; + u8 len; /* Actual size can be 2 bytes */ +} __packed; + +struct rfcomm_cmd { + u8 addr; + u8 ctrl; + u8 len; + u8 fcs; +} __packed; + +struct rfcomm_mcc { + u8 type; + u8 len; +} __packed; + +struct rfcomm_pn { + u8 dlci; + u8 flow_ctrl; + u8 priority; + u8 ack_timer; + __le16 mtu; + u8 max_retrans; + u8 credits; +} __packed; + +struct rfcomm_rpn { + u8 dlci; + u8 bit_rate; + u8 line_settings; + u8 flow_ctrl; + u8 xon_char; + u8 xoff_char; + __le16 param_mask; +} __packed; + +struct rfcomm_rls { + u8 dlci; + u8 status; +} __packed; + +struct rfcomm_msc { + u8 dlci; + u8 v24_sig; +} __packed; + +/* ---- Core structures, flags etc ---- */ + +struct rfcomm_session { + struct list_head list; + struct socket *sock; + struct timer_list timer; + unsigned long state; + unsigned long flags; + int initiator; + + /* Default DLC parameters */ + int cfc; + uint mtu; + + struct list_head dlcs; +}; + +struct rfcomm_dlc { + struct list_head list; + struct rfcomm_session *session; + struct sk_buff_head tx_queue; + struct timer_list timer; + + struct mutex lock; + unsigned long state; + unsigned long flags; + refcount_t refcnt; + u8 dlci; + u8 addr; + u8 priority; + u8 v24_sig; + u8 remote_v24_sig; + u8 mscex; + u8 out; + u8 sec_level; + u8 role_switch; + u32 defer_setup; + + uint mtu; + uint cfc; + uint rx_credits; + uint tx_credits; + + void *owner; + + void (*data_ready)(struct rfcomm_dlc *d, struct sk_buff *skb); + void (*state_change)(struct rfcomm_dlc *d, int err); + void (*modem_status)(struct rfcomm_dlc *d, u8 v24_sig); +}; + +/* DLC and session flags */ +#define RFCOMM_RX_THROTTLED 0 +#define RFCOMM_TX_THROTTLED 1 +#define RFCOMM_TIMED_OUT 2 +#define RFCOMM_MSC_PENDING 3 +#define RFCOMM_SEC_PENDING 4 +#define RFCOMM_AUTH_PENDING 5 +#define RFCOMM_AUTH_ACCEPT 6 +#define RFCOMM_AUTH_REJECT 7 +#define RFCOMM_DEFER_SETUP 8 +#define RFCOMM_ENC_DROP 9 + +/* Scheduling flags and events */ +#define RFCOMM_SCHED_WAKEUP 31 + +/* MSC exchange flags */ +#define RFCOMM_MSCEX_TX 1 +#define RFCOMM_MSCEX_RX 2 +#define RFCOMM_MSCEX_OK (RFCOMM_MSCEX_TX + RFCOMM_MSCEX_RX) + +/* CFC states */ +#define RFCOMM_CFC_UNKNOWN -1 +#define RFCOMM_CFC_DISABLED 0 +#define RFCOMM_CFC_ENABLED RFCOMM_MAX_CREDITS + +/* ---- RFCOMM SEND RPN ---- */ +int rfcomm_send_rpn(struct rfcomm_session *s, int cr, u8 dlci, + u8 bit_rate, u8 data_bits, u8 stop_bits, + u8 parity, u8 flow_ctrl_settings, + u8 xon_char, u8 xoff_char, u16 param_mask); + +/* ---- RFCOMM DLCs (channels) ---- */ +struct rfcomm_dlc *rfcomm_dlc_alloc(gfp_t prio); +void rfcomm_dlc_free(struct rfcomm_dlc *d); +int rfcomm_dlc_open(struct rfcomm_dlc *d, bdaddr_t *src, bdaddr_t *dst, + u8 channel); +int rfcomm_dlc_close(struct rfcomm_dlc *d, int reason); +int rfcomm_dlc_send(struct rfcomm_dlc *d, struct sk_buff *skb); +void rfcomm_dlc_send_noerror(struct rfcomm_dlc *d, struct sk_buff *skb); +int rfcomm_dlc_set_modem_status(struct rfcomm_dlc *d, u8 v24_sig); +int rfcomm_dlc_get_modem_status(struct rfcomm_dlc *d, u8 *v24_sig); +void rfcomm_dlc_accept(struct rfcomm_dlc *d); +struct rfcomm_dlc *rfcomm_dlc_exists(bdaddr_t *src, bdaddr_t *dst, u8 channel); + +#define rfcomm_dlc_lock(d) mutex_lock(&d->lock) +#define rfcomm_dlc_unlock(d) mutex_unlock(&d->lock) + +static inline void rfcomm_dlc_hold(struct rfcomm_dlc *d) +{ + refcount_inc(&d->refcnt); +} + +static inline void rfcomm_dlc_put(struct rfcomm_dlc *d) +{ + if (refcount_dec_and_test(&d->refcnt)) + rfcomm_dlc_free(d); +} + +void __rfcomm_dlc_throttle(struct rfcomm_dlc *d); +void __rfcomm_dlc_unthrottle(struct rfcomm_dlc *d); + +static inline void rfcomm_dlc_throttle(struct rfcomm_dlc *d) +{ + if (!test_and_set_bit(RFCOMM_RX_THROTTLED, &d->flags)) + __rfcomm_dlc_throttle(d); +} + +static inline void rfcomm_dlc_unthrottle(struct rfcomm_dlc *d) +{ + if (test_and_clear_bit(RFCOMM_RX_THROTTLED, &d->flags)) + __rfcomm_dlc_unthrottle(d); +} + +/* ---- RFCOMM sessions ---- */ +void rfcomm_session_getaddr(struct rfcomm_session *s, bdaddr_t *src, + bdaddr_t *dst); + +/* ---- RFCOMM sockets ---- */ +struct sockaddr_rc { + sa_family_t rc_family; + bdaddr_t rc_bdaddr; + u8 rc_channel; +}; + +#define RFCOMM_CONNINFO 0x02 +struct rfcomm_conninfo { + __u16 hci_handle; + __u8 dev_class[3]; +}; + +#define RFCOMM_LM 0x03 +#define RFCOMM_LM_MASTER 0x0001 +#define RFCOMM_LM_AUTH 0x0002 +#define RFCOMM_LM_ENCRYPT 0x0004 +#define RFCOMM_LM_TRUSTED 0x0008 +#define RFCOMM_LM_RELIABLE 0x0010 +#define RFCOMM_LM_SECURE 0x0020 +#define RFCOMM_LM_FIPS 0x0040 + +#define rfcomm_pi(sk) ((struct rfcomm_pinfo *) sk) + +struct rfcomm_pinfo { + struct bt_sock bt; + bdaddr_t src; + bdaddr_t dst; + struct rfcomm_dlc *dlc; + u8 channel; + u8 sec_level; + u8 role_switch; +}; + +int rfcomm_init_sockets(void); +void rfcomm_cleanup_sockets(void); + +int rfcomm_connect_ind(struct rfcomm_session *s, u8 channel, + struct rfcomm_dlc **d); + +/* ---- RFCOMM TTY ---- */ +#define RFCOMM_MAX_DEV 256 + +#define RFCOMMCREATEDEV _IOW('R', 200, int) +#define RFCOMMRELEASEDEV _IOW('R', 201, int) +#define RFCOMMGETDEVLIST _IOR('R', 210, int) +#define RFCOMMGETDEVINFO _IOR('R', 211, int) +#define RFCOMMSTEALDLC _IOW('R', 220, int) + +/* rfcomm_dev.flags bit definitions */ +#define RFCOMM_REUSE_DLC 0 +#define RFCOMM_RELEASE_ONHUP 1 +#define RFCOMM_HANGUP_NOW 2 +#define RFCOMM_TTY_ATTACHED 3 +#define RFCOMM_DEFUNCT_BIT4 4 /* don't reuse this bit - userspace visible */ + +/* rfcomm_dev.status bit definitions */ +#define RFCOMM_DEV_RELEASED 0 +#define RFCOMM_TTY_OWNED 1 + +struct rfcomm_dev_req { + s16 dev_id; + u32 flags; + bdaddr_t src; + bdaddr_t dst; + u8 channel; +}; + +struct rfcomm_dev_info { + s16 id; + u32 flags; + u16 state; + bdaddr_t src; + bdaddr_t dst; + u8 channel; +}; + +struct rfcomm_dev_list_req { + u16 dev_num; + struct rfcomm_dev_info dev_info[]; +}; + +int rfcomm_dev_ioctl(struct sock *sk, unsigned int cmd, void __user *arg); + +#ifdef CONFIG_BT_RFCOMM_TTY +int rfcomm_init_ttys(void); +void rfcomm_cleanup_ttys(void); +#else +static inline int rfcomm_init_ttys(void) +{ + return 0; +} +static inline void rfcomm_cleanup_ttys(void) +{ +} +#endif +#endif /* __RFCOMM_H */ -- cgit v1.2.3