From 9999e48639b3cecb08ffb37358bcba3b48161b29 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 10 May 2024 08:50:17 +0000
Subject: [PATCH] add ax88772_rst
---
kernel/fs/afs/proc.c | 177 +++++++++++++++++++++++++++++++++++++++-------------------
1 files changed, 118 insertions(+), 59 deletions(-)
diff --git a/kernel/fs/afs/proc.c b/kernel/fs/afs/proc.c
index e445c02..065a28b 100644
--- a/kernel/fs/afs/proc.c
+++ b/kernel/fs/afs/proc.c
@@ -1,12 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
/* /proc interface for AFS
*
* Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License
- * as published by the Free Software Foundation; either version
- * 2 of the License, or (at your option) any later version.
*/
#include <linux/slab.h>
@@ -16,6 +12,11 @@
#include <linux/sched.h>
#include <linux/uaccess.h>
#include "internal.h"
+
+struct afs_vl_seq_net_private {
+ struct seq_net_private seq; /* Must be first */
+ struct afs_vlserver_list *vllist;
+};
static inline struct afs_net *afs_seq2net(struct seq_file *m)
{
@@ -32,16 +33,26 @@
*/
static int afs_proc_cells_show(struct seq_file *m, void *v)
{
- struct afs_cell *cell = list_entry(v, struct afs_cell, proc_link);
+ struct afs_vlserver_list *vllist;
+ struct afs_cell *cell;
if (v == SEQ_START_TOKEN) {
/* display header on line 1 */
- seq_puts(m, "USE NAME\n");
+ seq_puts(m, "USE ACT TTL SV ST NAME\n");
return 0;
}
+ cell = list_entry(v, struct afs_cell, proc_link);
+ vllist = rcu_dereference(cell->vl_servers);
+
/* display one cell per line on subsequent lines */
- seq_printf(m, "%3u %s\n", atomic_read(&cell->usage), cell->name);
+ seq_printf(m, "%3u %3u %6lld %2u %2u %s\n",
+ atomic_read(&cell->ref),
+ atomic_read(&cell->active),
+ cell->dns_expiry - ktime_get_real_seconds(),
+ vllist ? vllist->nr_servers : 0,
+ cell->state,
+ cell->name);
return 0;
}
@@ -118,7 +129,7 @@
}
if (test_and_set_bit(AFS_CELL_FL_NO_GC, &cell->flags))
- afs_put_cell(net, cell);
+ afs_unuse_cell(net, cell, afs_cell_trace_unuse_no_pin);
} else {
goto inval;
}
@@ -144,13 +155,11 @@
struct afs_net *net;
net = afs_seq2net_single(m);
- if (rcu_access_pointer(net->ws_cell)) {
- rcu_read_lock();
- cell = rcu_dereference(net->ws_cell);
- if (cell)
- seq_printf(m, "%s\n", cell->name);
- rcu_read_unlock();
- }
+ down_read(&net->cells_lock);
+ cell = net->ws_cell;
+ if (cell)
+ seq_printf(m, "%s\n", cell->name);
+ up_read(&net->cells_lock);
return 0;
}
@@ -199,18 +208,18 @@
*/
static int afs_proc_cell_volumes_show(struct seq_file *m, void *v)
{
- struct afs_cell *cell = PDE_DATA(file_inode(m->file));
- struct afs_volume *vol = list_entry(v, struct afs_volume, proc_link);
+ struct afs_volume *vol = hlist_entry(v, struct afs_volume, proc_link);
/* Display header on line 1 */
- if (v == &cell->proc_volumes) {
- seq_puts(m, "USE VID TY\n");
+ if (v == SEQ_START_TOKEN) {
+ seq_puts(m, "USE VID TY NAME\n");
return 0;
}
- seq_printf(m, "%3d %08x %s\n",
+ seq_printf(m, "%3d %08llx %s %s\n",
atomic_read(&vol->usage), vol->vid,
- afs_vol_types[vol->type]);
+ afs_vol_types[vol->type],
+ vol->name);
return 0;
}
@@ -220,8 +229,8 @@
{
struct afs_cell *cell = PDE_DATA(file_inode(m->file));
- read_lock(&cell->proc_lock);
- return seq_list_start_head(&cell->proc_volumes, *_pos);
+ rcu_read_lock();
+ return seq_hlist_start_head_rcu(&cell->proc_volumes, *_pos);
}
static void *afs_proc_cell_volumes_next(struct seq_file *m, void *v,
@@ -229,15 +238,13 @@
{
struct afs_cell *cell = PDE_DATA(file_inode(m->file));
- return seq_list_next(v, &cell->proc_volumes, _pos);
+ return seq_hlist_next_rcu(v, &cell->proc_volumes, _pos);
}
static void afs_proc_cell_volumes_stop(struct seq_file *m, void *v)
__releases(cell->proc_lock)
{
- struct afs_cell *cell = PDE_DATA(file_inode(m->file));
-
- read_unlock(&cell->proc_lock);
+ rcu_read_unlock();
}
static const struct seq_operations afs_proc_cell_volumes_ops = {
@@ -247,61 +254,107 @@
.show = afs_proc_cell_volumes_show,
};
+static const char *const dns_record_sources[NR__dns_record_source + 1] = {
+ [DNS_RECORD_UNAVAILABLE] = "unav",
+ [DNS_RECORD_FROM_CONFIG] = "cfg",
+ [DNS_RECORD_FROM_DNS_A] = "A",
+ [DNS_RECORD_FROM_DNS_AFSDB] = "AFSDB",
+ [DNS_RECORD_FROM_DNS_SRV] = "SRV",
+ [DNS_RECORD_FROM_NSS] = "nss",
+ [NR__dns_record_source] = "[weird]"
+};
+
+static const char *const dns_lookup_statuses[NR__dns_lookup_status + 1] = {
+ [DNS_LOOKUP_NOT_DONE] = "no-lookup",
+ [DNS_LOOKUP_GOOD] = "good",
+ [DNS_LOOKUP_GOOD_WITH_BAD] = "good/bad",
+ [DNS_LOOKUP_BAD] = "bad",
+ [DNS_LOOKUP_GOT_NOT_FOUND] = "not-found",
+ [DNS_LOOKUP_GOT_LOCAL_FAILURE] = "local-failure",
+ [DNS_LOOKUP_GOT_TEMP_FAILURE] = "temp-failure",
+ [DNS_LOOKUP_GOT_NS_FAILURE] = "ns-failure",
+ [NR__dns_lookup_status] = "[weird]"
+};
+
/*
* Display the list of Volume Location servers we're using for a cell.
*/
static int afs_proc_cell_vlservers_show(struct seq_file *m, void *v)
{
- struct sockaddr_rxrpc *addr = v;
+ const struct afs_vl_seq_net_private *priv = m->private;
+ const struct afs_vlserver_list *vllist = priv->vllist;
+ const struct afs_vlserver_entry *entry;
+ const struct afs_vlserver *vlserver;
+ const struct afs_addr_list *alist;
+ int i;
- /* display header on line 1 */
- if (v == (void *)1) {
- seq_puts(m, "ADDRESS\n");
+ if (v == SEQ_START_TOKEN) {
+ seq_printf(m, "# source %s, status %s\n",
+ dns_record_sources[vllist ? vllist->source : 0],
+ dns_lookup_statuses[vllist ? vllist->status : 0]);
return 0;
}
- /* display one cell per line on subsequent lines */
- seq_printf(m, "%pISp\n", &addr->transport);
+ entry = v;
+ vlserver = entry->server;
+ alist = rcu_dereference(vlserver->addresses);
+
+ seq_printf(m, "%s [p=%hu w=%hu s=%s,%s]:\n",
+ vlserver->name, entry->priority, entry->weight,
+ dns_record_sources[alist ? alist->source : entry->source],
+ dns_lookup_statuses[alist ? alist->status : entry->status]);
+ if (alist) {
+ for (i = 0; i < alist->nr_addrs; i++)
+ seq_printf(m, " %c %pISpc\n",
+ alist->preferred == i ? '>' : '-',
+ &alist->addrs[i].transport);
+ }
+ seq_printf(m, " info: fl=%lx rtt=%d\n", vlserver->flags, vlserver->rtt);
+ seq_printf(m, " probe: fl=%x e=%d ac=%d out=%d\n",
+ vlserver->probe.flags, vlserver->probe.error,
+ vlserver->probe.abort_code,
+ atomic_read(&vlserver->probe_outstanding));
return 0;
}
static void *afs_proc_cell_vlservers_start(struct seq_file *m, loff_t *_pos)
__acquires(rcu)
{
- struct afs_addr_list *alist;
+ struct afs_vl_seq_net_private *priv = m->private;
+ struct afs_vlserver_list *vllist;
struct afs_cell *cell = PDE_DATA(file_inode(m->file));
loff_t pos = *_pos;
rcu_read_lock();
- alist = rcu_dereference(cell->vl_addrs);
+ vllist = rcu_dereference(cell->vl_servers);
+ priv->vllist = vllist;
- /* allow for the header line */
- if (!pos)
- return (void *) 1;
- pos--;
+ if (pos < 0)
+ *_pos = pos = 0;
+ if (pos == 0)
+ return SEQ_START_TOKEN;
- if (!alist || pos >= alist->nr_addrs)
+ if (pos - 1 >= vllist->nr_servers)
return NULL;
- return alist->addrs + pos;
+ return &vllist->servers[pos - 1];
}
static void *afs_proc_cell_vlservers_next(struct seq_file *m, void *v,
loff_t *_pos)
{
- struct afs_addr_list *alist;
- struct afs_cell *cell = PDE_DATA(file_inode(m->file));
+ struct afs_vl_seq_net_private *priv = m->private;
+ struct afs_vlserver_list *vllist = priv->vllist;
loff_t pos;
- alist = rcu_dereference(cell->vl_addrs);
-
pos = *_pos;
- (*_pos)++;
- if (!alist || pos >= alist->nr_addrs)
+ pos++;
+ *_pos = pos;
+ if (!vllist || pos - 1 >= vllist->nr_servers)
return NULL;
- return alist->addrs + pos;
+ return &vllist->servers[pos - 1];
}
static void afs_proc_cell_vlservers_stop(struct seq_file *m, void *v)
@@ -327,21 +380,27 @@
int i;
if (v == SEQ_START_TOKEN) {
- seq_puts(m, "UUID USE ADDR\n");
+ seq_puts(m, "UUID REF ACT\n");
return 0;
}
server = list_entry(v, struct afs_server, proc_link);
alist = rcu_dereference(server->addresses);
- seq_printf(m, "%pU %3d %pISpc%s\n",
+ seq_printf(m, "%pU %3d %3d\n",
&server->uuid,
- atomic_read(&server->usage),
- &alist->addrs[0].transport,
- alist->index == 0 ? "*" : "");
- for (i = 1; i < alist->nr_addrs; i++)
- seq_printf(m, " %pISpc%s\n",
- &alist->addrs[i].transport,
- alist->index == i ? "*" : "");
+ atomic_read(&server->ref),
+ atomic_read(&server->active));
+ seq_printf(m, " - info: fl=%lx rtt=%u brk=%x\n",
+ server->flags, server->rtt, server->cb_s_break);
+ seq_printf(m, " - probe: last=%d out=%d\n",
+ (int)(jiffies - server->probed_at) / HZ,
+ atomic_read(&server->probe_outstanding));
+ seq_printf(m, " - ALIST v=%u rsp=%lx f=%lx\n",
+ alist->version, alist->responded, alist->failed);
+ for (i = 0; i < alist->nr_addrs; i++)
+ seq_printf(m, " [%x] %pISpc%s\n",
+ i, &alist->addrs[i].transport,
+ alist->preferred == i ? "*" : "");
return 0;
}
@@ -563,7 +622,7 @@
if (!proc_create_net_data("vlservers", 0444, dir,
&afs_proc_cell_vlservers_ops,
- sizeof(struct seq_net_private),
+ sizeof(struct afs_vl_seq_net_private),
cell) ||
!proc_create_net_data("volumes", 0444, dir,
&afs_proc_cell_volumes_ops,
--
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