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1/* SPDX-License-Identifier: GPL-2.0 */
2/*
3 * definition for kvm on s390
4 *
5 * Copyright IBM Corp. 2008, 2020
6 *
7 * Author(s): Carsten Otte <cotte@de.ibm.com>
8 * Christian Borntraeger <borntraeger@de.ibm.com>
9 * Christian Ehrhardt <ehrhardt@de.ibm.com>
10 */
11
12#ifndef ARCH_S390_KVM_S390_H
13#define ARCH_S390_KVM_S390_H
14
15#include <linux/hrtimer.h>
16#include <linux/kvm.h>
17#include <linux/kvm_host.h>
18#include <linux/lockdep.h>
19#include <asm/facility.h>
20#include <asm/processor.h>
21#include <asm/sclp.h>
22
23/* Transactional Memory Execution related macros */
24#define IS_TE_ENABLED(vcpu) ((vcpu->arch.sie_block->ecb & ECB_TE))
25#define TDB_FORMAT1 1
26#define IS_ITDB_VALID(vcpu) ((*(char *)vcpu->arch.sie_block->itdba == TDB_FORMAT1))
27
28extern debug_info_t *kvm_s390_dbf;
29extern debug_info_t *kvm_s390_dbf_uv;
30
31#define KVM_UV_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
32do { \
33 debug_sprintf_event((d_kvm)->arch.dbf, d_loglevel, d_string "\n", \
34 d_args); \
35 debug_sprintf_event(kvm_s390_dbf_uv, d_loglevel, \
36 "%d: " d_string "\n", (d_kvm)->userspace_pid, \
37 d_args); \
38} while (0)
39
40#define KVM_EVENT(d_loglevel, d_string, d_args...)\
41do { \
42 debug_sprintf_event(kvm_s390_dbf, d_loglevel, d_string "\n", \
43 d_args); \
44} while (0)
45
46#define VM_EVENT(d_kvm, d_loglevel, d_string, d_args...)\
47do { \
48 debug_sprintf_event(d_kvm->arch.dbf, d_loglevel, d_string "\n", \
49 d_args); \
50} while (0)
51
52#define VCPU_EVENT(d_vcpu, d_loglevel, d_string, d_args...)\
53do { \
54 debug_sprintf_event(d_vcpu->kvm->arch.dbf, d_loglevel, \
55 "%02d[%016lx-%016lx]: " d_string "\n", d_vcpu->vcpu_id, \
56 d_vcpu->arch.sie_block->gpsw.mask, d_vcpu->arch.sie_block->gpsw.addr,\
57 d_args); \
58} while (0)
59
60static inline void kvm_s390_set_cpuflags(struct kvm_vcpu *vcpu, u32 flags)
61{
62 atomic_or(flags, &vcpu->arch.sie_block->cpuflags);
63}
64
65static inline void kvm_s390_clear_cpuflags(struct kvm_vcpu *vcpu, u32 flags)
66{
67 atomic_andnot(flags, &vcpu->arch.sie_block->cpuflags);
68}
69
70static inline bool kvm_s390_test_cpuflags(struct kvm_vcpu *vcpu, u32 flags)
71{
72 return (atomic_read(&vcpu->arch.sie_block->cpuflags) & flags) == flags;
73}
74
75static inline int is_vcpu_stopped(struct kvm_vcpu *vcpu)
76{
77 return kvm_s390_test_cpuflags(vcpu, CPUSTAT_STOPPED);
78}
79
80static inline int is_vcpu_idle(struct kvm_vcpu *vcpu)
81{
82 return test_bit(vcpu->vcpu_idx, vcpu->kvm->arch.idle_mask);
83}
84
85static inline int kvm_is_ucontrol(struct kvm *kvm)
86{
87#ifdef CONFIG_KVM_S390_UCONTROL
88 if (kvm->arch.gmap)
89 return 0;
90 return 1;
91#else
92 return 0;
93#endif
94}
95
96#define GUEST_PREFIX_SHIFT 13
97static inline u32 kvm_s390_get_prefix(struct kvm_vcpu *vcpu)
98{
99 return vcpu->arch.sie_block->prefix << GUEST_PREFIX_SHIFT;
100}
101
102static inline void kvm_s390_set_prefix(struct kvm_vcpu *vcpu, u32 prefix)
103{
104 VCPU_EVENT(vcpu, 3, "set prefix of cpu %03u to 0x%x", vcpu->vcpu_id,
105 prefix);
106 vcpu->arch.sie_block->prefix = prefix >> GUEST_PREFIX_SHIFT;
107 kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu);
108 kvm_make_request(KVM_REQ_REFRESH_GUEST_PREFIX, vcpu);
109}
110
111static inline u64 kvm_s390_get_base_disp_s(struct kvm_vcpu *vcpu, u8 *ar)
112{
113 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
114 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
115
116 if (ar)
117 *ar = base2;
118
119 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
120}
121
122static inline void kvm_s390_get_base_disp_sse(struct kvm_vcpu *vcpu,
123 u64 *address1, u64 *address2,
124 u8 *ar_b1, u8 *ar_b2)
125{
126 u32 base1 = (vcpu->arch.sie_block->ipb & 0xf0000000) >> 28;
127 u32 disp1 = (vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16;
128 u32 base2 = (vcpu->arch.sie_block->ipb & 0xf000) >> 12;
129 u32 disp2 = vcpu->arch.sie_block->ipb & 0x0fff;
130
131 *address1 = (base1 ? vcpu->run->s.regs.gprs[base1] : 0) + disp1;
132 *address2 = (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
133
134 if (ar_b1)
135 *ar_b1 = base1;
136 if (ar_b2)
137 *ar_b2 = base2;
138}
139
140static inline void kvm_s390_get_regs_rre(struct kvm_vcpu *vcpu, int *r1, int *r2)
141{
142 if (r1)
143 *r1 = (vcpu->arch.sie_block->ipb & 0x00f00000) >> 20;
144 if (r2)
145 *r2 = (vcpu->arch.sie_block->ipb & 0x000f0000) >> 16;
146}
147
148static inline u64 kvm_s390_get_base_disp_rsy(struct kvm_vcpu *vcpu, u8 *ar)
149{
150 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
151 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16) +
152 ((vcpu->arch.sie_block->ipb & 0xff00) << 4);
153 /* The displacement is a 20bit _SIGNED_ value */
154 if (disp2 & 0x80000)
155 disp2+=0xfff00000;
156
157 if (ar)
158 *ar = base2;
159
160 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + (long)(int)disp2;
161}
162
163static inline u64 kvm_s390_get_base_disp_rs(struct kvm_vcpu *vcpu, u8 *ar)
164{
165 u32 base2 = vcpu->arch.sie_block->ipb >> 28;
166 u32 disp2 = ((vcpu->arch.sie_block->ipb & 0x0fff0000) >> 16);
167
168 if (ar)
169 *ar = base2;
170
171 return (base2 ? vcpu->run->s.regs.gprs[base2] : 0) + disp2;
172}
173
174/* Set the condition code in the guest program status word */
175static inline void kvm_s390_set_psw_cc(struct kvm_vcpu *vcpu, unsigned long cc)
176{
177 vcpu->arch.sie_block->gpsw.mask &= ~(3UL << 44);
178 vcpu->arch.sie_block->gpsw.mask |= cc << 44;
179}
180
181/* test availability of facility in a kvm instance */
182static inline int test_kvm_facility(struct kvm *kvm, unsigned long nr)
183{
184 return __test_facility(nr, kvm->arch.model.fac_mask) &&
185 __test_facility(nr, kvm->arch.model.fac_list);
186}
187
188static inline int set_kvm_facility(u64 *fac_list, unsigned long nr)
189{
190 unsigned char *ptr;
191
192 if (nr >= MAX_FACILITY_BIT)
193 return -EINVAL;
194 ptr = (unsigned char *) fac_list + (nr >> 3);
195 *ptr |= (0x80UL >> (nr & 7));
196 return 0;
197}
198
199static inline int test_kvm_cpu_feat(struct kvm *kvm, unsigned long nr)
200{
201 WARN_ON_ONCE(nr >= KVM_S390_VM_CPU_FEAT_NR_BITS);
202 return test_bit_inv(nr, kvm->arch.cpu_feat);
203}
204
205/* are cpu states controlled by user space */
206static inline int kvm_s390_user_cpu_state_ctrl(struct kvm *kvm)
207{
208 return kvm->arch.user_cpu_state_ctrl != 0;
209}
210
211static inline void kvm_s390_set_user_cpu_state_ctrl(struct kvm *kvm)
212{
213 if (kvm->arch.user_cpu_state_ctrl)
214 return;
215
216 VM_EVENT(kvm, 3, "%s", "ENABLE: Userspace CPU state control");
217 kvm->arch.user_cpu_state_ctrl = 1;
218}
219
220/* get the end gfn of the last (highest gfn) memslot */
221static inline unsigned long kvm_s390_get_gfn_end(struct kvm_memslots *slots)
222{
223 struct rb_node *node;
224 struct kvm_memory_slot *ms;
225
226 if (WARN_ON(kvm_memslots_empty(slots)))
227 return 0;
228
229 node = rb_last(&slots->gfn_tree);
230 ms = container_of(node, struct kvm_memory_slot, gfn_node[slots->node_idx]);
231 return ms->base_gfn + ms->npages;
232}
233
234static inline u32 kvm_s390_get_gisa_desc(struct kvm *kvm)
235{
236 u32 gd = (u32)(u64)kvm->arch.gisa_int.origin;
237
238 if (gd && sclp.has_gisaf)
239 gd |= GISA_FORMAT1;
240 return gd;
241}
242
243/* implemented in pv.c */
244int kvm_s390_pv_destroy_cpu(struct kvm_vcpu *vcpu, u16 *rc, u16 *rrc);
245int kvm_s390_pv_create_cpu(struct kvm_vcpu *vcpu, u16 *rc, u16 *rrc);
246int kvm_s390_pv_deinit_vm(struct kvm *kvm, u16 *rc, u16 *rrc);
247int kvm_s390_pv_init_vm(struct kvm *kvm, u16 *rc, u16 *rrc);
248int kvm_s390_pv_set_sec_parms(struct kvm *kvm, void *hdr, u64 length, u16 *rc,
249 u16 *rrc);
250int kvm_s390_pv_unpack(struct kvm *kvm, unsigned long addr, unsigned long size,
251 unsigned long tweak, u16 *rc, u16 *rrc);
252int kvm_s390_pv_set_cpu_state(struct kvm_vcpu *vcpu, u8 state);
253int kvm_s390_pv_dump_cpu(struct kvm_vcpu *vcpu, void *buff, u16 *rc, u16 *rrc);
254int kvm_s390_pv_dump_stor_state(struct kvm *kvm, void __user *buff_user,
255 u64 *gaddr, u64 buff_user_len, u16 *rc, u16 *rrc);
256int kvm_s390_pv_dump_complete(struct kvm *kvm, void __user *buff_user,
257 u16 *rc, u16 *rrc);
258
259static inline u64 kvm_s390_pv_get_handle(struct kvm *kvm)
260{
261 return kvm->arch.pv.handle;
262}
263
264static inline u64 kvm_s390_pv_cpu_get_handle(struct kvm_vcpu *vcpu)
265{
266 return vcpu->arch.pv.handle;
267}
268
269static inline bool kvm_s390_pv_is_protected(struct kvm *kvm)
270{
271 lockdep_assert_held(&kvm->lock);
272 return !!kvm_s390_pv_get_handle(kvm);
273}
274
275static inline bool kvm_s390_pv_cpu_is_protected(struct kvm_vcpu *vcpu)
276{
277 lockdep_assert_held(&vcpu->mutex);
278 return !!kvm_s390_pv_cpu_get_handle(vcpu);
279}
280
281/* implemented in interrupt.c */
282int kvm_s390_handle_wait(struct kvm_vcpu *vcpu);
283void kvm_s390_vcpu_wakeup(struct kvm_vcpu *vcpu);
284enum hrtimer_restart kvm_s390_idle_wakeup(struct hrtimer *timer);
285int __must_check kvm_s390_deliver_pending_interrupts(struct kvm_vcpu *vcpu);
286void kvm_s390_clear_local_irqs(struct kvm_vcpu *vcpu);
287void kvm_s390_clear_float_irqs(struct kvm *kvm);
288int __must_check kvm_s390_inject_vm(struct kvm *kvm,
289 struct kvm_s390_interrupt *s390int);
290int __must_check kvm_s390_inject_vcpu(struct kvm_vcpu *vcpu,
291 struct kvm_s390_irq *irq);
292static inline int kvm_s390_inject_prog_irq(struct kvm_vcpu *vcpu,
293 struct kvm_s390_pgm_info *pgm_info)
294{
295 struct kvm_s390_irq irq = {
296 .type = KVM_S390_PROGRAM_INT,
297 .u.pgm = *pgm_info,
298 };
299
300 return kvm_s390_inject_vcpu(vcpu, &irq);
301}
302static inline int kvm_s390_inject_program_int(struct kvm_vcpu *vcpu, u16 code)
303{
304 struct kvm_s390_irq irq = {
305 .type = KVM_S390_PROGRAM_INT,
306 .u.pgm.code = code,
307 };
308
309 return kvm_s390_inject_vcpu(vcpu, &irq);
310}
311struct kvm_s390_interrupt_info *kvm_s390_get_io_int(struct kvm *kvm,
312 u64 isc_mask, u32 schid);
313int kvm_s390_reinject_io_int(struct kvm *kvm,
314 struct kvm_s390_interrupt_info *inti);
315int kvm_s390_mask_adapter(struct kvm *kvm, unsigned int id, bool masked);
316
317/* implemented in intercept.c */
318u8 kvm_s390_get_ilen(struct kvm_vcpu *vcpu);
319int kvm_handle_sie_intercept(struct kvm_vcpu *vcpu);
320static inline void kvm_s390_rewind_psw(struct kvm_vcpu *vcpu, int ilen)
321{
322 struct kvm_s390_sie_block *sie_block = vcpu->arch.sie_block;
323
324 sie_block->gpsw.addr = __rewind_psw(sie_block->gpsw, ilen);
325}
326static inline void kvm_s390_forward_psw(struct kvm_vcpu *vcpu, int ilen)
327{
328 kvm_s390_rewind_psw(vcpu, -ilen);
329}
330static inline void kvm_s390_retry_instr(struct kvm_vcpu *vcpu)
331{
332 /* don't inject PER events if we re-execute the instruction */
333 vcpu->arch.sie_block->icptstatus &= ~0x02;
334 kvm_s390_rewind_psw(vcpu, kvm_s390_get_ilen(vcpu));
335}
336
337int handle_sthyi(struct kvm_vcpu *vcpu);
338
339/* implemented in priv.c */
340int is_valid_psw(psw_t *psw);
341int kvm_s390_handle_aa(struct kvm_vcpu *vcpu);
342int kvm_s390_handle_b2(struct kvm_vcpu *vcpu);
343int kvm_s390_handle_e3(struct kvm_vcpu *vcpu);
344int kvm_s390_handle_e5(struct kvm_vcpu *vcpu);
345int kvm_s390_handle_01(struct kvm_vcpu *vcpu);
346int kvm_s390_handle_b9(struct kvm_vcpu *vcpu);
347int kvm_s390_handle_lpsw(struct kvm_vcpu *vcpu);
348int kvm_s390_handle_stctl(struct kvm_vcpu *vcpu);
349int kvm_s390_handle_lctl(struct kvm_vcpu *vcpu);
350int kvm_s390_handle_eb(struct kvm_vcpu *vcpu);
351int kvm_s390_skey_check_enable(struct kvm_vcpu *vcpu);
352
353/* implemented in vsie.c */
354int kvm_s390_handle_vsie(struct kvm_vcpu *vcpu);
355void kvm_s390_vsie_kick(struct kvm_vcpu *vcpu);
356void kvm_s390_vsie_gmap_notifier(struct gmap *gmap, unsigned long start,
357 unsigned long end);
358void kvm_s390_vsie_init(struct kvm *kvm);
359void kvm_s390_vsie_destroy(struct kvm *kvm);
360
361/* implemented in sigp.c */
362int kvm_s390_handle_sigp(struct kvm_vcpu *vcpu);
363int kvm_s390_handle_sigp_pei(struct kvm_vcpu *vcpu);
364
365/* implemented in kvm-s390.c */
366void kvm_s390_set_tod_clock(struct kvm *kvm, const struct kvm_s390_vm_tod_clock *gtod);
367int kvm_s390_try_set_tod_clock(struct kvm *kvm, const struct kvm_s390_vm_tod_clock *gtod);
368long kvm_arch_fault_in_page(struct kvm_vcpu *vcpu, gpa_t gpa, int writable);
369int kvm_s390_store_status_unloaded(struct kvm_vcpu *vcpu, unsigned long addr);
370int kvm_s390_vcpu_store_status(struct kvm_vcpu *vcpu, unsigned long addr);
371int kvm_s390_vcpu_start(struct kvm_vcpu *vcpu);
372int kvm_s390_vcpu_stop(struct kvm_vcpu *vcpu);
373void kvm_s390_vcpu_block(struct kvm_vcpu *vcpu);
374void kvm_s390_vcpu_unblock(struct kvm_vcpu *vcpu);
375bool kvm_s390_vcpu_sie_inhibited(struct kvm_vcpu *vcpu);
376void exit_sie(struct kvm_vcpu *vcpu);
377void kvm_s390_sync_request(int req, struct kvm_vcpu *vcpu);
378int kvm_s390_vcpu_setup_cmma(struct kvm_vcpu *vcpu);
379void kvm_s390_vcpu_unsetup_cmma(struct kvm_vcpu *vcpu);
380void kvm_s390_set_cpu_timer(struct kvm_vcpu *vcpu, __u64 cputm);
381__u64 kvm_s390_get_cpu_timer(struct kvm_vcpu *vcpu);
382int kvm_s390_cpus_from_pv(struct kvm *kvm, u16 *rc, u16 *rrc);
383
384/* implemented in diag.c */
385int kvm_s390_handle_diag(struct kvm_vcpu *vcpu);
386
387static inline void kvm_s390_vcpu_block_all(struct kvm *kvm)
388{
389 unsigned long i;
390 struct kvm_vcpu *vcpu;
391
392 WARN_ON(!mutex_is_locked(&kvm->lock));
393 kvm_for_each_vcpu(i, vcpu, kvm)
394 kvm_s390_vcpu_block(vcpu);
395}
396
397static inline void kvm_s390_vcpu_unblock_all(struct kvm *kvm)
398{
399 unsigned long i;
400 struct kvm_vcpu *vcpu;
401
402 kvm_for_each_vcpu(i, vcpu, kvm)
403 kvm_s390_vcpu_unblock(vcpu);
404}
405
406static inline u64 kvm_s390_get_tod_clock_fast(struct kvm *kvm)
407{
408 u64 rc;
409
410 preempt_disable();
411 rc = get_tod_clock_fast() + kvm->arch.epoch;
412 preempt_enable();
413 return rc;
414}
415
416/**
417 * kvm_s390_inject_prog_cond - conditionally inject a program check
418 * @vcpu: virtual cpu
419 * @rc: original return/error code
420 *
421 * This function is supposed to be used after regular guest access functions
422 * failed, to conditionally inject a program check to a vcpu. The typical
423 * pattern would look like
424 *
425 * rc = write_guest(vcpu, addr, data, len);
426 * if (rc)
427 * return kvm_s390_inject_prog_cond(vcpu, rc);
428 *
429 * A negative return code from guest access functions implies an internal error
430 * like e.g. out of memory. In these cases no program check should be injected
431 * to the guest.
432 * A positive value implies that an exception happened while accessing a guest's
433 * memory. In this case all data belonging to the corresponding program check
434 * has been stored in vcpu->arch.pgm and can be injected with
435 * kvm_s390_inject_prog_irq().
436 *
437 * Returns: - the original @rc value if @rc was negative (internal error)
438 * - zero if @rc was already zero
439 * - zero or error code from injecting if @rc was positive
440 * (program check injected to @vcpu)
441 */
442static inline int kvm_s390_inject_prog_cond(struct kvm_vcpu *vcpu, int rc)
443{
444 if (rc <= 0)
445 return rc;
446 return kvm_s390_inject_prog_irq(vcpu, &vcpu->arch.pgm);
447}
448
449int s390int_to_s390irq(struct kvm_s390_interrupt *s390int,
450 struct kvm_s390_irq *s390irq);
451
452/* implemented in interrupt.c */
453int kvm_s390_vcpu_has_irq(struct kvm_vcpu *vcpu, int exclude_stop);
454int psw_extint_disabled(struct kvm_vcpu *vcpu);
455void kvm_s390_destroy_adapters(struct kvm *kvm);
456int kvm_s390_ext_call_pending(struct kvm_vcpu *vcpu);
457extern struct kvm_device_ops kvm_flic_ops;
458int kvm_s390_is_stop_irq_pending(struct kvm_vcpu *vcpu);
459int kvm_s390_is_restart_irq_pending(struct kvm_vcpu *vcpu);
460void kvm_s390_clear_stop_irq(struct kvm_vcpu *vcpu);
461int kvm_s390_set_irq_state(struct kvm_vcpu *vcpu,
462 void __user *buf, int len);
463int kvm_s390_get_irq_state(struct kvm_vcpu *vcpu,
464 __u8 __user *buf, int len);
465void kvm_s390_gisa_init(struct kvm *kvm);
466void kvm_s390_gisa_clear(struct kvm *kvm);
467void kvm_s390_gisa_destroy(struct kvm *kvm);
468void kvm_s390_gisa_disable(struct kvm *kvm);
469void kvm_s390_gisa_enable(struct kvm *kvm);
470int kvm_s390_gib_init(u8 nisc);
471void kvm_s390_gib_destroy(void);
472
473/* implemented in guestdbg.c */
474void kvm_s390_backup_guest_per_regs(struct kvm_vcpu *vcpu);
475void kvm_s390_restore_guest_per_regs(struct kvm_vcpu *vcpu);
476void kvm_s390_patch_guest_per_regs(struct kvm_vcpu *vcpu);
477int kvm_s390_import_bp_data(struct kvm_vcpu *vcpu,
478 struct kvm_guest_debug *dbg);
479void kvm_s390_clear_bp_data(struct kvm_vcpu *vcpu);
480void kvm_s390_prepare_debug_exit(struct kvm_vcpu *vcpu);
481int kvm_s390_handle_per_ifetch_icpt(struct kvm_vcpu *vcpu);
482int kvm_s390_handle_per_event(struct kvm_vcpu *vcpu);
483
484/* support for Basic/Extended SCA handling */
485static inline union ipte_control *kvm_s390_get_ipte_control(struct kvm *kvm)
486{
487 struct bsca_block *sca = kvm->arch.sca; /* SCA version doesn't matter */
488
489 return &sca->ipte_control;
490}
491static inline int kvm_s390_use_sca_entries(void)
492{
493 /*
494 * Without SIGP interpretation, only SRS interpretation (if available)
495 * might use the entries. By not setting the entries and keeping them
496 * invalid, hardware will not access them but intercept.
497 */
498 return sclp.has_sigpif;
499}
500void kvm_s390_reinject_machine_check(struct kvm_vcpu *vcpu,
501 struct mcck_volatile_info *mcck_info);
502
503/**
504 * kvm_s390_vcpu_crypto_reset_all
505 *
506 * Reset the crypto attributes for each vcpu. This can be done while the vcpus
507 * are running as each vcpu will be removed from SIE before resetting the crypt
508 * attributes and restored to SIE afterward.
509 *
510 * Note: The kvm->lock must be held while calling this function
511 *
512 * @kvm: the KVM guest
513 */
514void kvm_s390_vcpu_crypto_reset_all(struct kvm *kvm);
515
516/**
517 * kvm_s390_vcpu_pci_enable_interp
518 *
519 * Set the associated PCI attributes for each vcpu to allow for zPCI Load/Store
520 * interpretation as well as adapter interruption forwarding.
521 *
522 * @kvm: the KVM guest
523 */
524void kvm_s390_vcpu_pci_enable_interp(struct kvm *kvm);
525
526/**
527 * diag9c_forwarding_hz
528 *
529 * Set the maximum number of diag9c forwarding per second
530 */
531extern unsigned int diag9c_forwarding_hz;
532
533#endif