diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/Makefile | 10 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/chip.c | 3 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/debugfs.c | 296 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/debugfs.h | 93 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/driver.c | 20 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/fault.c | 375 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/fault.h | 109 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/hfi.h | 10 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/verbs.c | 13 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/verbs.h | 6 |
10 files changed, 577 insertions, 358 deletions
diff --git a/drivers/infiniband/hw/hfi1/Makefile b/drivers/infiniband/hw/hfi1/Makefile index ce4010bad982..f451ba912f47 100644 --- a/drivers/infiniband/hw/hfi1/Makefile +++ b/drivers/infiniband/hw/hfi1/Makefile @@ -14,7 +14,15 @@ hfi1-y := affinity.o chip.o device.o driver.o efivar.o \ qp.o qsfp.o rc.o ruc.o sdma.o sysfs.o trace.o \ uc.o ud.o user_exp_rcv.o user_pages.o user_sdma.o verbs.o \ verbs_txreq.o vnic_main.o vnic_sdma.o -hfi1-$(CONFIG_DEBUG_FS) += debugfs.o + +ifdef CONFIG_DEBUG_FS +hfi1-y += debugfs.o +ifdef CONFIG_FAULT_INJECTION +ifdef CONFIG_FAULT_INJECTION_DEBUG_FS +hfi1-y += fault.o +endif +endif +endif CFLAGS_trace.o = -I$(src) ifdef MVERSION diff --git a/drivers/infiniband/hw/hfi1/chip.c b/drivers/infiniband/hw/hfi1/chip.c index 4cd422ff92f8..582cf7eb779f 100644 --- a/drivers/infiniband/hw/hfi1/chip.c +++ b/drivers/infiniband/hw/hfi1/chip.c @@ -1,5 +1,5 @@ /* - * Copyright(c) 2015 - 2017 Intel Corporation. + * Copyright(c) 2015 - 2018 Intel Corporation. * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. @@ -65,6 +65,7 @@ #include "aspm.h" #include "affinity.h" #include "debugfs.h" +#include "fault.h" #define NUM_IB_PORTS 1 diff --git a/drivers/infiniband/hw/hfi1/debugfs.c b/drivers/infiniband/hw/hfi1/debugfs.c index 5343960610fe..9f992ae36c89 100644 --- a/drivers/infiniband/hw/hfi1/debugfs.c +++ b/drivers/infiniband/hw/hfi1/debugfs.c @@ -60,15 +60,13 @@ #include "device.h" #include "qp.h" #include "sdma.h" +#include "fault.h" static struct dentry *hfi1_dbg_root; /* wrappers to enforce srcu in seq file */ -static ssize_t hfi1_seq_read( - struct file *file, - char __user *buf, - size_t size, - loff_t *ppos) +ssize_t hfi1_seq_read(struct file *file, char __user *buf, size_t size, + loff_t *ppos) { struct dentry *d = file->f_path.dentry; ssize_t r; @@ -81,10 +79,7 @@ static ssize_t hfi1_seq_read( return r; } -static loff_t hfi1_seq_lseek( - struct file *file, - loff_t offset, - int whence) +loff_t hfi1_seq_lseek(struct file *file, loff_t offset, int whence) { struct dentry *d = file->f_path.dentry; loff_t r; @@ -100,48 +95,6 @@ static loff_t hfi1_seq_lseek( #define private2dd(file) (file_inode(file)->i_private) #define private2ppd(file) (file_inode(file)->i_private) -#define DEBUGFS_SEQ_FILE_OPS(name) \ -static const struct seq_operations _##name##_seq_ops = { \ - .start = _##name##_seq_start, \ - .next = _##name##_seq_next, \ - .stop = _##name##_seq_stop, \ - .show = _##name##_seq_show \ -} - -#define DEBUGFS_SEQ_FILE_OPEN(name) \ -static int _##name##_open(struct inode *inode, struct file *s) \ -{ \ - struct seq_file *seq; \ - int ret; \ - ret = seq_open(s, &_##name##_seq_ops); \ - if (ret) \ - return ret; \ - seq = s->private_data; \ - seq->private = inode->i_private; \ - return 0; \ -} - -#define DEBUGFS_FILE_OPS(name) \ -static const struct file_operations _##name##_file_ops = { \ - .owner = THIS_MODULE, \ - .open = _##name##_open, \ - .read = hfi1_seq_read, \ - .llseek = hfi1_seq_lseek, \ - .release = seq_release \ -} - -#define DEBUGFS_FILE_CREATE(name, parent, data, ops, mode) \ -do { \ - struct dentry *ent; \ - ent = debugfs_create_file(name, mode, parent, \ - data, ops); \ - if (!ent) \ - pr_warn("create of %s failed\n", name); \ -} while (0) - -#define DEBUGFS_SEQ_FILE_CREATE(name, parent, data) \ - DEBUGFS_FILE_CREATE(#name, parent, data, &_##name##_file_ops, S_IRUGO) - static void *_opcode_stats_seq_start(struct seq_file *s, loff_t *pos) { struct hfi1_opcode_stats_perctx *opstats; @@ -1160,236 +1113,6 @@ DEBUGFS_SEQ_FILE_OPS(sdma_cpu_list); DEBUGFS_SEQ_FILE_OPEN(sdma_cpu_list) DEBUGFS_FILE_OPS(sdma_cpu_list); -#ifdef CONFIG_FAULT_INJECTION -static void *_fault_stats_seq_start(struct seq_file *s, loff_t *pos) -{ - struct hfi1_opcode_stats_perctx *opstats; - - if (*pos >= ARRAY_SIZE(opstats->stats)) - return NULL; - return pos; -} - -static void *_fault_stats_seq_next(struct seq_file *s, void *v, loff_t *pos) -{ - struct hfi1_opcode_stats_perctx *opstats; - - ++*pos; - if (*pos >= ARRAY_SIZE(opstats->stats)) - return NULL; - return pos; -} - -static void _fault_stats_seq_stop(struct seq_file *s, void *v) -{ -} - -static int _fault_stats_seq_show(struct seq_file *s, void *v) -{ - loff_t *spos = v; - loff_t i = *spos, j; - u64 n_packets = 0, n_bytes = 0; - struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; - struct hfi1_devdata *dd = dd_from_dev(ibd); - struct hfi1_ctxtdata *rcd; - - for (j = 0; j < dd->first_dyn_alloc_ctxt; j++) { - rcd = hfi1_rcd_get_by_index(dd, j); - if (rcd) { - n_packets += rcd->opstats->stats[i].n_packets; - n_bytes += rcd->opstats->stats[i].n_bytes; - } - hfi1_rcd_put(rcd); - } - for_each_possible_cpu(j) { - struct hfi1_opcode_stats_perctx *sp = - per_cpu_ptr(dd->tx_opstats, j); - - n_packets += sp->stats[i].n_packets; - n_bytes += sp->stats[i].n_bytes; - } - if (!n_packets && !n_bytes) - return SEQ_SKIP; - if (!ibd->fault_opcode->n_rxfaults[i] && - !ibd->fault_opcode->n_txfaults[i]) - return SEQ_SKIP; - seq_printf(s, "%02llx %llu/%llu (faults rx:%llu faults: tx:%llu)\n", i, - (unsigned long long)n_packets, - (unsigned long long)n_bytes, - (unsigned long long)ibd->fault_opcode->n_rxfaults[i], - (unsigned long long)ibd->fault_opcode->n_txfaults[i]); - return 0; -} - -DEBUGFS_SEQ_FILE_OPS(fault_stats); -DEBUGFS_SEQ_FILE_OPEN(fault_stats); -DEBUGFS_FILE_OPS(fault_stats); - -static void fault_exit_opcode_debugfs(struct hfi1_ibdev *ibd) -{ - if (ibd->fault_opcode) - debugfs_remove_recursive(ibd->fault_opcode->dir); - kfree(ibd->fault_opcode); - ibd->fault_opcode = NULL; -} - -static int fault_init_opcode_debugfs(struct hfi1_ibdev *ibd) -{ - struct dentry *parent = ibd->hfi1_ibdev_dbg; - - ibd->fault_opcode = kzalloc(sizeof(*ibd->fault_opcode), GFP_KERNEL); - if (!ibd->fault_opcode) - return -ENOMEM; - - ibd->fault_opcode->attr.interval = 1; - ibd->fault_opcode->attr.require_end = ULONG_MAX; - ibd->fault_opcode->attr.stacktrace_depth = 32; - ibd->fault_opcode->attr.dname = NULL; - ibd->fault_opcode->attr.verbose = 0; - ibd->fault_opcode->fault_by_opcode = false; - ibd->fault_opcode->opcode = 0; - ibd->fault_opcode->mask = 0xff; - - ibd->fault_opcode->dir = - fault_create_debugfs_attr("fault_opcode", - parent, - &ibd->fault_opcode->attr); - if (IS_ERR(ibd->fault_opcode->dir)) { - kfree(ibd->fault_opcode); - ibd->fault_opcode = NULL; - return -ENOENT; - } - - DEBUGFS_SEQ_FILE_CREATE(fault_stats, ibd->fault_opcode->dir, ibd); - if (!debugfs_create_bool("fault_by_opcode", 0600, - ibd->fault_opcode->dir, - &ibd->fault_opcode->fault_by_opcode)) - goto fail; - if (!debugfs_create_x8("opcode", 0600, ibd->fault_opcode->dir, - &ibd->fault_opcode->opcode)) - goto fail; - if (!debugfs_create_x8("mask", 0600, ibd->fault_opcode->dir, - &ibd->fault_opcode->mask)) - goto fail; - - return 0; -fail: - fault_exit_opcode_debugfs(ibd); - return -ENOMEM; -} - -static void fault_exit_packet_debugfs(struct hfi1_ibdev *ibd) -{ - if (ibd->fault_packet) - debugfs_remove_recursive(ibd->fault_packet->dir); - kfree(ibd->fault_packet); - ibd->fault_packet = NULL; -} - -static int fault_init_packet_debugfs(struct hfi1_ibdev *ibd) -{ - struct dentry *parent = ibd->hfi1_ibdev_dbg; - - ibd->fault_packet = kzalloc(sizeof(*ibd->fault_packet), GFP_KERNEL); - if (!ibd->fault_packet) - return -ENOMEM; - - ibd->fault_packet->attr.interval = 1; - ibd->fault_packet->attr.require_end = ULONG_MAX; - ibd->fault_packet->attr.stacktrace_depth = 32; - ibd->fault_packet->attr.dname = NULL; - ibd->fault_packet->attr.verbose = 0; - ibd->fault_packet->fault_by_packet = false; - - ibd->fault_packet->dir = - fault_create_debugfs_attr("fault_packet", - parent, - &ibd->fault_opcode->attr); - if (IS_ERR(ibd->fault_packet->dir)) { - kfree(ibd->fault_packet); - ibd->fault_packet = NULL; - return -ENOENT; - } - - if (!debugfs_create_bool("fault_by_packet", 0600, - ibd->fault_packet->dir, - &ibd->fault_packet->fault_by_packet)) - goto fail; - if (!debugfs_create_u64("fault_stats", 0400, - ibd->fault_packet->dir, - &ibd->fault_packet->n_faults)) - goto fail; - - return 0; -fail: - fault_exit_packet_debugfs(ibd); - return -ENOMEM; -} - -static void fault_exit_debugfs(struct hfi1_ibdev *ibd) -{ - fault_exit_opcode_debugfs(ibd); - fault_exit_packet_debugfs(ibd); -} - -static int fault_init_debugfs(struct hfi1_ibdev *ibd) -{ - int ret = 0; - - ret = fault_init_opcode_debugfs(ibd); - if (ret) - return ret; - - ret = fault_init_packet_debugfs(ibd); - if (ret) - fault_exit_opcode_debugfs(ibd); - - return ret; -} - -bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd) -{ - return ibd->fault_suppress_err; -} - -bool hfi1_dbg_fault_opcode(struct rvt_qp *qp, u32 opcode, bool rx) -{ - bool ret = false; - struct hfi1_ibdev *ibd = to_idev(qp->ibqp.device); - - if (!ibd->fault_opcode || !ibd->fault_opcode->fault_by_opcode) - return false; - if (ibd->fault_opcode->opcode != (opcode & ibd->fault_opcode->mask)) - return false; - ret = should_fail(&ibd->fault_opcode->attr, 1); - if (ret) { - trace_hfi1_fault_opcode(qp, opcode); - if (rx) - ibd->fault_opcode->n_rxfaults[opcode]++; - else - ibd->fault_opcode->n_txfaults[opcode]++; - } - return ret; -} - -bool hfi1_dbg_fault_packet(struct hfi1_packet *packet) -{ - struct rvt_dev_info *rdi = &packet->rcd->ppd->dd->verbs_dev.rdi; - struct hfi1_ibdev *ibd = dev_from_rdi(rdi); - bool ret = false; - - if (!ibd->fault_packet || !ibd->fault_packet->fault_by_packet) - return false; - - ret = should_fail(&ibd->fault_packet->attr, 1); - if (ret) { - ++ibd->fault_packet->n_faults; - trace_hfi1_fault_packet(packet); - } - return ret; -} -#endif - void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd) { char name[sizeof("port0counters") + 1]; @@ -1442,21 +1165,14 @@ void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd) S_IRUGO : S_IRUGO | S_IWUSR); } -#ifdef CONFIG_FAULT_INJECTION - debugfs_create_bool("fault_suppress_err", 0600, - ibd->hfi1_ibdev_dbg, - &ibd->fault_suppress_err); - fault_init_debugfs(ibd); -#endif + hfi1_fault_init_debugfs(ibd); } void hfi1_dbg_ibdev_exit(struct hfi1_ibdev *ibd) { if (!hfi1_dbg_root) goto out; -#ifdef CONFIG_FAULT_INJECTION - fault_exit_debugfs(ibd); -#endif + hfi1_fault_exit_debugfs(ibd); debugfs_remove(ibd->hfi1_ibdev_link); debugfs_remove_recursive(ibd->hfi1_ibdev_dbg); out: diff --git a/drivers/infiniband/hw/hfi1/debugfs.h b/drivers/infiniband/hw/hfi1/debugfs.h index 38c38a98156d..1c91461b108f 100644 --- a/drivers/infiniband/hw/hfi1/debugfs.h +++ b/drivers/infiniband/hw/hfi1/debugfs.h @@ -1,7 +1,7 @@ #ifndef _HFI1_DEBUGFS_H #define _HFI1_DEBUGFS_H /* - * Copyright(c) 2015, 2016 Intel Corporation. + * Copyright(c) 2015, 2016, 2018 Intel Corporation. * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. @@ -48,51 +48,59 @@ */ struct hfi1_ibdev; -#ifdef CONFIG_DEBUG_FS -void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd); -void hfi1_dbg_ibdev_exit(struct hfi1_ibdev *ibd); -void hfi1_dbg_init(void); -void hfi1_dbg_exit(void); -#ifdef CONFIG_FAULT_INJECTION -#include <linux/fault-inject.h> -struct fault_opcode { - struct fault_attr attr; - struct dentry *dir; - bool fault_by_opcode; - u64 n_rxfaults[256]; - u64 n_txfaults[256]; - u8 opcode; - u8 mask; -}; - -struct fault_packet { - struct fault_attr attr; - struct dentry *dir; - bool fault_by_packet; - u64 n_faults; -}; - -bool hfi1_dbg_fault_opcode(struct rvt_qp *qp, u32 opcode, bool rx); -bool hfi1_dbg_fault_packet(struct hfi1_packet *packet); -bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd); -#else -static inline bool hfi1_dbg_fault_packet(struct hfi1_packet *packet) -{ - return false; +#define DEBUGFS_FILE_CREATE(name, parent, data, ops, mode) \ +do { \ + struct dentry *ent; \ + const char *__name = name; \ + ent = debugfs_create_file(__name, mode, parent, \ + data, ops); \ + if (!ent) \ + pr_warn("create of %s failed\n", __name); \ +} while (0) + +#define DEBUGFS_SEQ_FILE_OPS(name) \ +static const struct seq_operations _##name##_seq_ops = { \ + .start = _##name##_seq_start, \ + .next = _##name##_seq_next, \ + .stop = _##name##_seq_stop, \ + .show = _##name##_seq_show \ } -static inline bool hfi1_dbg_fault_opcode(struct rvt_qp *qp, - u32 opcode, bool rx) -{ - return false; +#define DEBUGFS_SEQ_FILE_OPEN(name) \ +static int _##name##_open(struct inode *inode, struct file *s) \ +{ \ + struct seq_file *seq; \ + int ret; \ + ret = seq_open(s, &_##name##_seq_ops); \ + if (ret) \ + return ret; \ + seq = s->private_data; \ + seq->private = inode->i_private; \ + return 0; \ } -static inline bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd) -{ - return false; +#define DEBUGFS_FILE_OPS(name) \ +static const struct file_operations _##name##_file_ops = { \ + .owner = THIS_MODULE, \ + .open = _##name##_open, \ + .read = hfi1_seq_read, \ + .llseek = hfi1_seq_lseek, \ + .release = seq_release \ } -#endif + +#define DEBUGFS_SEQ_FILE_CREATE(name, parent, data) \ + DEBUGFS_FILE_CREATE(#name, parent, data, &_##name##_file_ops, 0444) + +ssize_t hfi1_seq_read(struct file *file, char __user *buf, size_t size, + loff_t *ppos); +loff_t hfi1_seq_lseek(struct file *file, loff_t offset, int whence); + +#ifdef CONFIG_DEBUG_FS +void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd); +void hfi1_dbg_ibdev_exit(struct hfi1_ibdev *ibd); +void hfi1_dbg_init(void); +void hfi1_dbg_exit(void); #else static inline void hfi1_dbg_ibdev_init(struct hfi1_ibdev *ibd) @@ -111,13 +119,12 @@ static inline void hfi1_dbg_exit(void) { } -static inline bool hfi1_dbg_fault_packet(struct hfi1_packet *packet) +static inline bool hfi1_dbg_should_fault_rx(struct hfi1_packet *packet) { return false; } -static inline bool hfi1_dbg_fault_opcode(struct rvt_qp *qp, - u32 opcode, bool rx) +static inline bool hfi1_dbg_should_fault_tx(struct rvt_qp *qp, u32 opcode) { return false; } diff --git a/drivers/infiniband/hw/hfi1/driver.c b/drivers/infiniband/hw/hfi1/driver.c index bd837a048bf4..e5a57ebd8da4 100644 --- a/drivers/infiniband/hw/hfi1/driver.c +++ b/drivers/infiniband/hw/hfi1/driver.c @@ -1,5 +1,5 @@ /* - * Copyright(c) 2015-2017 Intel Corporation. + * Copyright(c) 2015-2018 Intel Corporation. * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. @@ -61,6 +61,7 @@ #include "sdma.h" #include "debugfs.h" #include "vnic.h" +#include "fault.h" #undef pr_fmt #define pr_fmt(fmt) DRIVER_NAME ": " fmt @@ -1565,10 +1566,10 @@ void handle_eflags(struct hfi1_packet *packet) */ int process_receive_ib(struct hfi1_packet *packet) { - if (unlikely(hfi1_dbg_fault_packet(packet))) + if (hfi1_setup_9B_packet(packet)) return RHF_RCV_CONTINUE; - if (hfi1_setup_9B_packet(packet)) + if (unlikely(hfi1_dbg_should_fault_rx(packet))) return RHF_RCV_CONTINUE; trace_hfi1_rcvhdr(packet); @@ -1642,7 +1643,8 @@ int process_receive_error(struct hfi1_packet *packet) /* KHdrHCRCErr -- KDETH packet with a bad HCRC */ if (unlikely( hfi1_dbg_fault_suppress_err(&packet->rcd->dd->verbs_dev) && - rhf_rcv_type_err(packet->rhf) == 3)) + (rhf_rcv_type_err(packet->rhf) == RHF_RCV_TYPE_ERROR || + packet->rhf & RHF_DC_ERR))) return RHF_RCV_CONTINUE; hfi1_setup_ib_header(packet); @@ -1657,10 +1659,10 @@ int process_receive_error(struct hfi1_packet *packet) int kdeth_process_expected(struct hfi1_packet *packet) { - if (unlikely(hfi1_dbg_fault_packet(packet))) + hfi1_setup_9B_packet(packet); + if (unlikely(hfi1_dbg_should_fault_rx(packet))) return RHF_RCV_CONTINUE; - hfi1_setup_ib_header(packet); if (unlikely(rhf_err_flags(packet->rhf))) handle_eflags(packet); @@ -1671,11 +1673,11 @@ int kdeth_process_expected(struct hfi1_packet *packet) int kdeth_process_eager(struct hfi1_packet *packet) { - hfi1_setup_ib_header(packet); + hfi1_setup_9B_packet(packet); + if (unlikely(hfi1_dbg_should_fault_rx(packet))) + return RHF_RCV_CONTINUE; if (unlikely(rhf_err_flags(packet->rhf))) handle_eflags(packet); - if (unlikely(hfi1_dbg_fault_packet(packet))) - return RHF_RCV_CONTINUE; dd_dev_err(packet->rcd->dd, "Unhandled eager packet received. Dropping.\n"); diff --git a/drivers/infiniband/hw/hfi1/fault.c b/drivers/infiniband/hw/hfi1/fault.c new file mode 100644 index 000000000000..e2290f32c8d9 --- /dev/null +++ b/drivers/infiniband/hw/hfi1/fault.c @@ -0,0 +1,375 @@ +/* + * Copyright(c) 2018 Intel Corporation. + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * BSD LICENSE + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * - Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +#include <linux/debugfs.h> +#include <linux/seq_file.h> +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/types.h> +#include <linux/bitmap.h> + +#include "debugfs.h" +#include "fault.h" +#include "trace.h" + +#define HFI1_FAULT_DIR_TX BIT(0) +#define HFI1_FAULT_DIR_RX BIT(1) +#define HFI1_FAULT_DIR_TXRX (HFI1_FAULT_DIR_TX | HFI1_FAULT_DIR_RX) + +static void *_fault_stats_seq_start(struct seq_file *s, loff_t *pos) +{ + struct hfi1_opcode_stats_perctx *opstats; + + if (*pos >= ARRAY_SIZE(opstats->stats)) + return NULL; + return pos; +} + +static void *_fault_stats_seq_next(struct seq_file *s, void *v, loff_t *pos) +{ + struct hfi1_opcode_stats_perctx *opstats; + + ++*pos; + if (*pos >= ARRAY_SIZE(opstats->stats)) + return NULL; + return pos; +} + +static void _fault_stats_seq_stop(struct seq_file *s, void *v) +{ +} + +static int _fault_stats_seq_show(struct seq_file *s, void *v) +{ + loff_t *spos = v; + loff_t i = *spos, j; + u64 n_packets = 0, n_bytes = 0; + struct hfi1_ibdev *ibd = (struct hfi1_ibdev *)s->private; + struct hfi1_devdata *dd = dd_from_dev(ibd); + struct hfi1_ctxtdata *rcd; + + for (j = 0; j < dd->first_dyn_alloc_ctxt; j++) { + rcd = hfi1_rcd_get_by_index(dd, j); + if (rcd) { + n_packets += rcd->opstats->stats[i].n_packets; + n_bytes += rcd->opstats->stats[i].n_bytes; + } + hfi1_rcd_put(rcd); + } + for_each_possible_cpu(j) { + struct hfi1_opcode_stats_perctx *sp = + per_cpu_ptr(dd->tx_opstats, j); + + n_packets += sp->stats[i].n_packets; + n_bytes += sp->stats[i].n_bytes; + } + if (!n_packets && !n_bytes) + return SEQ_SKIP; + if (!ibd->fault->n_rxfaults[i] && !ibd->fault->n_txfaults[i]) + return SEQ_SKIP; + seq_printf(s, "%02llx %llu/%llu (faults rx:%llu faults: tx:%llu)\n", i, + (unsigned long long)n_packets, + (unsigned long long)n_bytes, + (unsigned long long)ibd->fault->n_rxfaults[i], + (unsigned long long)ibd->fault->n_txfaults[i]); + return 0; +} + +DEBUGFS_SEQ_FILE_OPS(fault_stats); +DEBUGFS_SEQ_FILE_OPEN(fault_stats); +DEBUGFS_FILE_OPS(fault_stats); + +static int fault_opcodes_open(struct inode *inode, struct file *file) +{ + file->private_data = inode->i_private; + return nonseekable_open(inode, file); +} + +static ssize_t fault_opcodes_write(struct file *file, const char __user *buf, + size_t len, loff_t *pos) +{ + ssize_t ret = 0; + /* 1280 = 256 opcodes * 4 chars/opcode + 255 commas + NULL */ + size_t copy, datalen = 1280; + char *data, *token, *ptr, *end; + struct fault *fault = file->private_data; + + data = kcalloc(datalen, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + copy = min(len, datalen - 1); + if (copy_from_user(data, buf, copy)) + return -EFAULT; + + ret = debugfs_file_get(file->f_path.dentry); + if (unlikely(ret)) + return ret; + ptr = data; + token = ptr; + for (ptr = data; *ptr; ptr = end + 1, token = ptr) { + char *dash; + unsigned long range_start, range_end, i; + bool remove = false; + + end = strchr(ptr, ','); + if (end) + *end = '\0'; + if (token[0] == '-') { + remove = true; + token++; + } + dash = strchr(token, '-'); + if (dash) + *dash = '\0'; + if (kstrtoul(token, 0, &range_start)) + break; + if (dash) { + token = dash + 1; + if (kstrtoul(token, 0, &range_end)) + break; + } else { + range_end = range_start; + } + if (range_start == range_end && range_start == -1UL) { + bitmap_zero(fault->opcodes, sizeof(fault->opcodes) * + BITS_PER_BYTE); + break; + } + for (i = range_start; i <= range_end; i++) { + if (remove) + clear_bit(i, fault->opcodes); + else + set_bit(i, fault->opcodes); + } + if (!end) + break; + } + ret = len; + + debugfs_file_put(file->f_path.dentry); + kfree(data); + return ret; +} + +static ssize_t fault_opcodes_read(struct file *file, char __user *buf, + size_t len, loff_t *pos) +{ + ssize_t ret = 0; + char *data; + size_t datalen = 1280, size = 0; /* see fault_opcodes_write() */ + unsigned long bit = 0, zero = 0; + struct fault *fault = file->private_data; + size_t bitsize = sizeof(fault->opcodes) * BITS_PER_BYTE; + + data = kcalloc(datalen, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + ret = debugfs_file_get(file->f_path.dentry); + if (unlikely(ret)) + return ret; + bit = find_first_bit(fault->opcodes, bitsize); + while (bit < bitsize) { + zero = find_next_zero_bit(fault->opcodes, bitsize, bit); + if (zero - 1 != bit) + size += snprintf(data + size, + datalen - size - 1, + "0x%lx-0x%lx,", bit, zero - 1); + else + size += snprintf(data + size, + datalen - size - 1, "0x%lx,", + bit); + bit = find_next_bit(fault->opcodes, bitsize, zero); + } + debugfs_file_put(file->f_path.dentry); + data[size - 1] = '\n'; + data[size] = '\0'; + ret = simple_read_from_buffer(buf, len, pos, data, size); + kfree(data); + return ret; +} + +static const struct file_operations __fault_opcodes_fops = { + .owner = THIS_MODULE, + .open = fault_opcodes_open, + .read = fault_opcodes_read, + .write = fault_opcodes_write, + .llseek = no_llseek +}; + +void hfi1_fault_exit_debugfs(struct hfi1_ibdev *ibd) +{ + if (ibd->fault) + debugfs_remove_recursive(ibd->fault->dir); + kfree(ibd->fault); + ibd->fault = NULL; +} + +int hfi1_fault_init_debugfs(struct hfi1_ibdev *ibd) +{ + struct dentry *parent = ibd->hfi1_ibdev_dbg; + + ibd->fault = kzalloc(sizeof(*ibd->fault), GFP_KERNEL); + if (!ibd->fault) + return -ENOMEM; + + ibd->fault->attr.interval = 1; + ibd->fault->attr.require_end = ULONG_MAX; + ibd->fault->attr.stacktrace_depth = 32; + ibd->fault->attr.dname = NULL; + ibd->fault->attr.verbose = 0; + ibd->fault->enable = false; + ibd->fault->opcode = false; + ibd->fault->fault_skip = 0; + ibd->fault->skip = 0; + ibd->fault->direction = HFI1_FAULT_DIR_TXRX; + ibd->fault->suppress_err = false; + bitmap_zero(ibd->fault->opcodes, + sizeof(ibd->fault->opcodes) * BITS_PER_BYTE); + + ibd->fault->dir = + fault_create_debugfs_attr("fault", parent, + &ibd->fault->attr); + if (IS_ERR(ibd->fault->dir)) { + kfree(ibd->fault); + ibd->fault = NULL; + return -ENOENT; + } + + DEBUGFS_SEQ_FILE_CREATE(fault_stats, ibd->fault->dir, ibd); + if (!debugfs_create_bool("enable", 0600, ibd->fault->dir, + &ibd->fault->enable)) + goto fail; + if (!debugfs_create_bool("suppress_err", 0600, + ibd->fault->dir, + &ibd->fault->suppress_err)) + goto fail; + if (!debugfs_create_bool("opcode_mode", 0600, ibd->fault->dir, + &ibd->fault->opcode)) + goto fail; + if (!debugfs_create_file("opcodes", 0600, ibd->fault->dir, + ibd->fault, &__fault_opcodes_fops)) + goto fail; + if (!debugfs_create_u64("skip_pkts", 0600, + ibd->fault->dir, + &ibd->fault->fault_skip)) + goto fail; + if (!debugfs_create_u64("skip_usec", 0600, + ibd->fault->dir, + &ibd->fault->fault_skip_usec)) + goto fail; + if (!debugfs_create_u8("direction", 0600, ibd->fault->dir, + &ibd->fault->direction)) + goto fail; + + return 0; +fail: + hfi1_fault_exit_debugfs(ibd); + return -ENOMEM; +} + +bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd) +{ + if (ibd->fault) + return ibd->fault->suppress_err; + return false; +} + +static bool __hfi1_should_fault(struct hfi1_ibdev *ibd, u32 opcode, + u8 direction) +{ + bool ret = false; + + if (!ibd->fault || !ibd->fault->enable) + return false; + if (!(ibd->fault->direction & direction)) + return false; + if (ibd->fault->opcode) { + if (bitmap_empty(ibd->fault->opcodes, + (sizeof(ibd->fault->opcodes) * + BITS_PER_BYTE))) + return false; + if (!(test_bit(opcode, ibd->fault->opcodes))) + return false; + } + if (ibd->fault->fault_skip_usec && + time_before(jiffies, ibd->fault->skip_usec)) + return false; + if (ibd->fault->fault_skip && ibd->fault->skip) { + ibd->fault->skip--; + return false; + } + ret = should_fail(&ibd->fault->attr, 1); + if (ret) { + ibd->fault->skip = ibd->fault->fault_skip; + ibd->fault->skip_usec = jiffies + + usecs_to_jiffies(ibd->fault->fault_skip_usec); + } + return ret; +} + +bool hfi1_dbg_should_fault_tx(struct rvt_qp *qp, u32 opcode) +{ + struct hfi1_ibdev *ibd = to_idev(qp->ibqp.device); + + if (__hfi1_should_fault(ibd, opcode, HFI1_FAULT_DIR_TX)) { + trace_hfi1_fault_opcode(qp, opcode); + ibd->fault->n_txfaults[opcode]++; + return true; + } + return false; +} + +bool hfi1_dbg_should_fault_rx(struct hfi1_packet *packet) +{ + struct hfi1_ibdev *ibd = &packet->rcd->dd->verbs_dev; + + if (__hfi1_should_fault(ibd, packet->opcode, HFI1_FAULT_DIR_RX)) { + trace_hfi1_fault_packet(packet); + ibd->fault->n_rxfaults[packet->opcode]++; + return true; + } + return false; +} diff --git a/drivers/infiniband/hw/hfi1/fault.h b/drivers/infiniband/hw/hfi1/fault.h new file mode 100644 index 000000000000..a83382700a7c --- /dev/null +++ b/drivers/infiniband/hw/hfi1/fault.h @@ -0,0 +1,109 @@ +#ifndef _HFI1_FAULT_H +#define _HFI1_FAULT_H +/* + * Copyright(c) 2018 Intel Corporation. + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * BSD LICENSE + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * - Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ +#include <linux/fault-inject.h> +#include <linux/dcache.h> +#include <linux/bitops.h> +#include <linux/kernel.h> +#include <rdma/rdma_vt.h> + +#include "hfi.h" + +struct hfi1_ibdev; + +#if defined(CONFIG_FAULT_INJECTION) && defined(CONFIG_FAULT_INJECTION_DEBUG_FS) +struct fault { + struct fault_attr attr; + struct dentry *dir; + u64 n_rxfaults[(1U << BITS_PER_BYTE)]; + u64 n_txfaults[(1U << BITS_PER_BYTE)]; + u64 fault_skip; + u64 skip; + u64 fault_skip_usec; + unsigned long skip_usec; + unsigned long opcodes[(1U << BITS_PER_BYTE) / BITS_PER_LONG]; + bool enable; + bool suppress_err; + bool opcode; + u8 direction; +}; + +int hfi1_fault_init_debugfs(struct hfi1_ibdev *ibd); +bool hfi1_dbg_should_fault_tx(struct rvt_qp *qp, u32 opcode); +bool hfi1_dbg_should_fault_rx(struct hfi1_packet *packet); +bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd); +void hfi1_fault_exit_debugfs(struct hfi1_ibdev *ibd); + +#else + +static inline int hfi1_fault_init_debugfs(struct hfi1_ibdev *ibd) +{ + return 0; +} + +static inline bool hfi1_dbg_should_fault_rx(struct hfi1_packet *packet) +{ + return false; +} + +static inline bool hfi1_dbg_should_fault_tx(struct rvt_qp *qp, + u32 opcode) +{ + return false; +} + +static inline bool hfi1_dbg_fault_suppress_err(struct hfi1_ibdev *ibd) +{ + return false; +} + +static inline void hfi1_fault_exit_debugfs(struct hfi1_ibdev *ibd) +{ +} +#endif +#endif /* _HFI1_FAULT_H */ diff --git a/drivers/infiniband/hw/hfi1/hfi.h b/drivers/infiniband/hw/hfi1/hfi.h index 9c97c180c35e..9cd758ce7764 100644 --- a/drivers/infiniband/hw/hfi1/hfi.h +++ b/drivers/infiniband/hw/hfi1/hfi.h @@ -1,7 +1,7 @@ #ifndef _HFI1_KERNEL_H #define _HFI1_KERNEL_H /* - * Copyright(c) 2015-2017 Intel Corporation. + * Copyright(c) 2015-2018 Intel Corporation. * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. @@ -2049,7 +2049,9 @@ static inline u64 hfi1_pkt_default_send_ctxt_mask(struct hfi1_devdata *dd, | SEND_CTXT_CHECK_ENABLE_DISALLOW_TOO_LONG_BYPASS_PACKETS_SMASK | SEND_CTXT_CHECK_ENABLE_DISALLOW_TOO_LONG_IB_PACKETS_SMASK | SEND_CTXT_CHECK_ENABLE_DISALLOW_BAD_PKT_LEN_SMASK +#ifndef CONFIG_FAULT_INJECTION | SEND_CTXT_CHECK_ENABLE_DISALLOW_PBC_TEST_SMASK +#endif | SEND_CTXT_CHECK_ENABLE_DISALLOW_TOO_SMALL_BYPASS_PACKETS_SMASK | SEND_CTXT_CHECK_ENABLE_DISALLOW_TOO_SMALL_IB_PACKETS_SMASK | SEND_CTXT_CHECK_ENABLE_DISALLOW_RAW_IPV6_SMASK @@ -2062,7 +2064,11 @@ static inline u64 hfi1_pkt_default_send_ctxt_mask(struct hfi1_devdata *dd, | SEND_CTXT_CHECK_ENABLE_CHECK_ENABLE_SMASK; if (ctxt_type == SC_USER) - base_sc_integrity |= HFI1_PKT_USER_SC_INTEGRITY; + base_sc_integrity |= +#ifndef CONFIG_FAULT_INJECTION + SEND_CTXT_CHECK_ENABLE_DISALLOW_PBC_TEST_SMASK | +#endif + HFI1_PKT_USER_SC_INTEGRITY; else base_sc_integrity |= HFI1_PKT_KERNEL_SC_INTEGRITY; diff --git a/drivers/infiniband/hw/hfi1/verbs.c b/drivers/infiniband/hw/hfi1/verbs.c index c8cf4d4984d3..9554e912af98 100644 --- a/drivers/infiniband/hw/hfi1/verbs.c +++ b/drivers/infiniband/hw/hfi1/verbs.c @@ -1,5 +1,5 @@ /* - * Copyright(c) 2015 - 2017 Intel Corporation. + * Copyright(c) 2015 - 2018 Intel Corporation. * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. @@ -63,6 +63,7 @@ #include "verbs_txreq.h" #include "debugfs.h" #include "vnic.h" +#include "fault.h" static unsigned int hfi1_lkey_table_size = 16; module_param_named(lkey_table_size, hfi1_lkey_table_size, uint, @@ -624,10 +625,6 @@ static inline void hfi1_handle_packet(struct hfi1_packet *packet, if (hfi1_do_pkey_check(packet)) goto unlock_drop; - if (unlikely(hfi1_dbg_fault_opcode(packet->qp, packet->opcode, - true))) - goto unlock_drop; - spin_lock_irqsave(&packet->qp->r_lock, flags); packet_handler = qp_ok(packet); if (likely(packet_handler)) @@ -934,8 +931,7 @@ int hfi1_verbs_send_dma(struct rvt_qp *qp, struct hfi1_pkt_state *ps, else pbc |= (ib_is_sc5(sc5) << PBC_DC_INFO_SHIFT); - if (unlikely(hfi1_dbg_fault_opcode(qp, ps->opcode, - false))) + if (unlikely(hfi1_dbg_should_fault_tx(qp, ps->opcode))) pbc = hfi1_fault_tx(qp, ps->opcode, pbc); pbc = create_pbc(ppd, pbc, @@ -1088,7 +1084,8 @@ int hfi1_verbs_send_pio(struct rvt_qp *qp, struct hfi1_pkt_state *ps, pbc |= PBC_PACKET_BYPASS | PBC_INSERT_BYPASS_ICRC; else pbc |= (ib_is_sc5(sc5) << PBC_DC_INFO_SHIFT); - if (unlikely(hfi1_dbg_fault_opcode(qp, ps->opcode, false))) + + if (unlikely(hfi1_dbg_should_fault_tx(qp, ps->opcode))) pbc = hfi1_fault_tx(qp, ps->opcode, pbc); pbc = create_pbc(ppd, pbc, qp->srate_mbps, vl, plen); } diff --git a/drivers/infiniband/hw/hfi1/verbs.h b/drivers/infiniband/hw/hfi1/verbs.h index 2d787b8346ca..081ca52e6621 100644 --- a/drivers/infiniband/hw/hfi1/verbs.h +++ b/drivers/infiniband/hw/hfi1/verbs.h @@ -1,5 +1,5 @@ /* - * Copyright(c) 2015 - 2017 Intel Corporation. + * Copyright(c) 2015 - 2018 Intel Corporation. * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. @@ -227,9 +227,7 @@ struct hfi1_ibdev { /* per HFI symlinks to above */ struct dentry *hfi1_ibdev_link; #ifdef CONFIG_FAULT_INJECTION - struct fault_opcode *fault_opcode; - struct fault_packet *fault_packet; - bool fault_suppress_err; + struct fault *fault; #endif #endif }; |