From 9cc63f8bcd560c760d0b12e15bba8f81c86237cf Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Fri, 14 Aug 2026 15:43:51 -0700 Subject: Merge branches 'expcb.2026.07.24a', 'misc.2026.07.30a', 'rcu-tasks.2026.07.30a', 'srcu.2026.08.11a' and 'torture.2026.08.14a' into HEAD Changes: Make expedited grace periods expedite normal RCU callbacks Miscellaneous fixes: * Improve diagnostic output with character task states. * Mark accesses to inform KCSAN of concurrency design. * Move from kmalloc() to kmalloc_obj(). * Documentation updates. * Improve handling of RCU deferred quiescent states. * Clean up unused function arguments and structure fields. * Reduce show_rcu_gp_kthreads() stack space. Tasks RCU updates: * Clean up after SRCU re-implementation of Tasks Trace RCU. * Mark accesses to inform KCSAN of concurrency design. * Add ->lazy_timer status to diagnostic output. * Remove an unnecessary memory barrier. * Fix a data race, courtesy of KCSAN. * Documentation updates. * Convert cond_resched_tasks_rcu_qs() from macro to static inline function. SRCU updates: * Add Rust helpers for SRCU. * Avoid losing queued work at cleanup_srcu_struct() time. Torture-test updates: * Preparation work for immediate RCU priority deboosting. * Test RCU readers from real interrupt handlers (as opposed to softirq). * Simplify code through use of cpumask_next_wrap(). * Improve diagnostic output with character task states. * Add rcutorture.nwriters parameter to allow lightweight stall testing, and rcutorture.stall_only to make doing so easier. * Test an RCU Tasks Trace grace period implying an RCU grace period. * Make RCU Tasks Trace torturing track reader batches. * Fix a data race, courtesy of KCSAN. * Plug a shuffle_tmp_mask memory leak on kthread spawn failure. --- include/net/llc.h | 159 ++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 159 insertions(+) create mode 100644 include/net/llc.h (limited to 'include/net/llc.h') diff --git a/include/net/llc.h b/include/net/llc.h new file mode 100644 index 000000000..029ba8a22 --- /dev/null +++ b/include/net/llc.h @@ -0,0 +1,159 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef LLC_H +#define LLC_H +/* + * Copyright (c) 1997 by Procom Technology, Inc. + * 2001-2003 by Arnaldo Carvalho de Melo + */ + +#include +#include +#include +#include +#include +#include +#include + +#include + +struct net_device; +struct packet_type; +struct sk_buff; + +struct llc_addr { + unsigned char lsap; + unsigned char mac[IFHWADDRLEN]; +}; + +#define LLC_SAP_STATE_INACTIVE 1 +#define LLC_SAP_STATE_ACTIVE 2 + +#define LLC_SK_DEV_HASH_BITS 6 +#define LLC_SK_DEV_HASH_ENTRIES (1<sk_dev_hash[bucket]; +} + +static inline +u32 llc_sk_laddr_hashfn(struct llc_sap *sap, const struct llc_addr *laddr) +{ + return hash_32(jhash(laddr->mac, sizeof(laddr->mac), 0), + LLC_SK_LADDR_HASH_BITS); +} + +static inline +struct hlist_nulls_head *llc_sk_laddr_hash(struct llc_sap *sap, + const struct llc_addr *laddr) +{ + return &sap->sk_laddr_hash[llc_sk_laddr_hashfn(sap, laddr)]; +} + +#define LLC_DEST_INVALID 0 /* Invalid LLC PDU type */ +#define LLC_DEST_SAP 1 /* Type 1 goes here */ +#define LLC_DEST_CONN 2 /* Type 2 goes here */ + +extern struct list_head llc_sap_list; + +int llc_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type *pt, + struct net_device *orig_dev); + +int llc_mac_hdr_init(struct sk_buff *skb, const unsigned char *sa, + const unsigned char *da); + +void llc_add_pack(int type, + void (*handler)(struct llc_sap *sap, struct sk_buff *skb)); +void llc_remove_pack(int type); + +void llc_set_station_handler(void (*handler)(struct sk_buff *skb)); + +struct llc_sap *llc_sap_open(unsigned char lsap, + int (*rcv)(struct sk_buff *skb, + struct net_device *dev, + struct packet_type *pt, + struct net_device *orig_dev)); +static inline void llc_sap_hold(struct llc_sap *sap) +{ + refcount_inc(&sap->refcnt); +} + +static inline bool llc_sap_hold_safe(struct llc_sap *sap) +{ + return refcount_inc_not_zero(&sap->refcnt); +} + +void llc_sap_close(struct llc_sap *sap); + +static inline void llc_sap_put(struct llc_sap *sap) +{ + if (refcount_dec_and_test(&sap->refcnt)) + llc_sap_close(sap); +} + +struct llc_sap *llc_sap_find(unsigned char sap_value); + +int llc_build_and_send_ui_pkt(struct llc_sap *sap, struct sk_buff *skb, + const unsigned char *dmac, unsigned char dsap); + +void llc_sap_handler(struct llc_sap *sap, struct sk_buff *skb); +void llc_conn_handler(struct llc_sap *sap, struct sk_buff *skb); + +void llc_station_init(void); +void llc_station_exit(void); + +#ifdef CONFIG_PROC_FS +int llc_proc_init(void); +void llc_proc_exit(void); +#else +#define llc_proc_init() (0) +#define llc_proc_exit() do { } while(0) +#endif /* CONFIG_PROC_FS */ +#ifdef CONFIG_SYSCTL +int llc_sysctl_init(void); +void llc_sysctl_exit(void); + +extern int sysctl_llc2_ack_timeout; +extern int sysctl_llc2_busy_timeout; +extern int sysctl_llc2_p_timeout; +extern int sysctl_llc2_rej_timeout; +#else +#define llc_sysctl_init() (0) +#define llc_sysctl_exit() do { } while(0) +#endif /* CONFIG_SYSCTL */ +#endif /* LLC_H */ -- cgit v1.3.1