diff options
Diffstat (limited to 'net/tipc')
| -rw-r--r-- | net/tipc/Kconfig | 13 | ||||
| -rw-r--r-- | net/tipc/config.c | 8 | ||||
| -rw-r--r-- | net/tipc/core.c | 7 | ||||
| -rw-r--r-- | net/tipc/core.h | 27 | ||||
| -rw-r--r-- | net/tipc/link.h | 1 | ||||
| -rw-r--r-- | net/tipc/log.c | 213 | ||||
| -rw-r--r-- | net/tipc/log.h | 66 |
7 files changed, 2 insertions, 333 deletions
diff --git a/net/tipc/Kconfig b/net/tipc/Kconfig index e24519a54938..585460180ffb 100644 --- a/net/tipc/Kconfig +++ b/net/tipc/Kconfig @@ -41,17 +41,4 @@ config TIPC_PORTS Setting this to a smaller value saves some memory, setting it to higher allows for more ports. -config TIPC_LOG - int "Size of log buffer" - depends on TIPC_ADVANCED - range 0 32768 - default "0" - help - Size (in bytes) of TIPC's internal log buffer, which records the - occurrence of significant events. Can range from 0 to 32768 bytes; - default is 0. - - There is no need to enable the log buffer unless the node will be - managed remotely via TIPC. - endif # TIPC diff --git a/net/tipc/config.c b/net/tipc/config.c index 96cfbf834a10..a056a3852f71 100644 --- a/net/tipc/config.c +++ b/net/tipc/config.c @@ -334,12 +334,6 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area case TIPC_CMD_SHOW_PORTS: rep_tlv_buf = tipc_port_get_ports(); break; - case TIPC_CMD_SET_LOG_SIZE: - rep_tlv_buf = tipc_log_resize_cmd(req_tlv_area, req_tlv_space); - break; - case TIPC_CMD_DUMP_LOG: - rep_tlv_buf = tipc_log_dump(); - break; case TIPC_CMD_SHOW_STATS: rep_tlv_buf = tipc_show_stats(); break; @@ -399,6 +393,8 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area case TIPC_CMD_GET_MAX_CLUSTERS: case TIPC_CMD_SET_MAX_NODES: case TIPC_CMD_GET_MAX_NODES: + case TIPC_CMD_SET_LOG_SIZE: + case TIPC_CMD_DUMP_LOG: rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED " (obsolete command)"); break; diff --git a/net/tipc/core.c b/net/tipc/core.c index 3689cb4067c8..6586eac6a50e 100644 --- a/net/tipc/core.c +++ b/net/tipc/core.c @@ -46,9 +46,6 @@ #define CONFIG_TIPC_PORTS 8191 #endif -#ifndef CONFIG_TIPC_LOG -#define CONFIG_TIPC_LOG 0 -#endif /* global variables used by multiple sub-systems within TIPC */ int tipc_random; @@ -124,7 +121,6 @@ static void tipc_core_stop(void) tipc_nametbl_stop(); tipc_ref_table_stop(); tipc_socket_stop(); - tipc_log_resize(0); } /** @@ -160,9 +156,6 @@ static int __init tipc_init(void) { int res; - if (tipc_log_resize(CONFIG_TIPC_LOG) != 0) - pr_warn("Unable to create log buffer\n"); - pr_info("Activated (version " TIPC_MOD_VER ")\n"); tipc_own_addr = 0; diff --git a/net/tipc/core.h b/net/tipc/core.h index 4dcdb4859026..fd42e106c185 100644 --- a/net/tipc/core.h +++ b/net/tipc/core.h @@ -63,37 +63,10 @@ #define ULTRA_STRING_MAX_LEN 32768 struct tipc_msg; /* msg.h */ -struct print_buf; /* log.h */ - -/* - * TIPC system monitoring code - */ - -/* - * TIPC's print buffer subsystem supports the following print buffers: - * - * TIPC_NULL : null buffer (i.e. print nowhere) - * TIPC_CONS : system console - * TIPC_LOG : TIPC log buffer - * &buf : user-defined buffer (struct print_buf *) - * - * Note: TIPC_LOG is configured to echo its output to the system console; - * user-defined buffers can be configured to do the same thing. - */ -extern struct print_buf *const TIPC_NULL; -extern struct print_buf *const TIPC_CONS; -extern struct print_buf *const TIPC_LOG; int tipc_snprintf(char *buf, int len, const char *fmt, ...); /* - * TIPC_OUTPUT is the destination print buffer for system messages. - */ -#ifndef TIPC_OUTPUT -#define TIPC_OUTPUT TIPC_LOG -#endif - -/* * TIPC-specific error codes */ #define ELINKCONG EAGAIN /* link congestion <=> resource unavailable */ diff --git a/net/tipc/link.h b/net/tipc/link.h index 8024a56a1ebc..6e921121be06 100644 --- a/net/tipc/link.h +++ b/net/tipc/link.h @@ -37,7 +37,6 @@ #ifndef _TIPC_LINK_H #define _TIPC_LINK_H -#include "log.h" #include "msg.h" #include "node.h" diff --git a/net/tipc/log.c b/net/tipc/log.c index fa7ce927fda5..abef644f27d8 100644 --- a/net/tipc/log.c +++ b/net/tipc/log.c @@ -36,138 +36,6 @@ #include "core.h" #include "config.h" -#include "log.h" - -/* - * TIPC pre-defines the following print buffers: - * - * TIPC_NULL : null buffer (i.e. print nowhere) - * TIPC_CONS : system console - * TIPC_LOG : TIPC log buffer - * - * Additional user-defined print buffers are also permitted. - */ -static struct print_buf null_buf = { NULL, 0, NULL, 0 }; -struct print_buf *const TIPC_NULL = &null_buf; - -static struct print_buf cons_buf = { NULL, 0, NULL, 1 }; -struct print_buf *const TIPC_CONS = &cons_buf; - -static struct print_buf log_buf = { NULL, 0, NULL, 1 }; -struct print_buf *const TIPC_LOG = &log_buf; - -/* - * Locking policy when using print buffers. - * - * 1) tipc_printf() uses 'print_lock' to protect against concurrent access to - * 'print_string' when writing to a print buffer. This also protects against - * concurrent writes to the print buffer being written to. - * - * 2) tipc_log_XXX() leverages the aforementioned use of 'print_lock' to - * protect against all types of concurrent operations on their associated - * print buffer (not just write operations). - * - * Note: All routines of the form tipc_printbuf_XXX() are lock-free, and rely - * on the caller to prevent simultaneous use of the print buffer(s) being - * manipulated. - */ -static DEFINE_SPINLOCK(print_lock); - -static void tipc_printbuf_move(struct print_buf *pb_to, - struct print_buf *pb_from); - -/** - * tipc_printbuf_init - initialize print buffer to empty - * @pb: pointer to print buffer structure - * @raw: pointer to character array used by print buffer - * @size: size of character array - * - * Note: If the character array is too small (or absent), the print buffer - * becomes a null device that discards anything written to it. - */ -void tipc_printbuf_init(struct print_buf *pb, char *raw, u32 size) -{ - pb->buf = raw; - pb->crs = raw; - pb->size = size; - pb->echo = 0; - - if (size < TIPC_PB_MIN_SIZE) { - pb->buf = NULL; - } else if (raw) { - pb->buf[0] = 0; - pb->buf[size - 1] = ~0; - } -} - -/** - * tipc_printbuf_reset - reinitialize print buffer to empty state - * @pb: pointer to print buffer structure - */ -static void tipc_printbuf_reset(struct print_buf *pb) -{ - if (pb->buf) { - pb->crs = pb->buf; - pb->buf[0] = 0; - pb->buf[pb->size - 1] = ~0; - } -} - -/** - * tipc_printbuf_empty - test if print buffer is in empty state - * @pb: pointer to print buffer structure - * - * Returns non-zero if print buffer is empty. - */ -static int tipc_printbuf_empty(struct print_buf *pb) -{ - return !pb->buf || (pb->crs == pb->buf); -} - -/** - * tipc_printbuf_move - move print buffer contents to another print buffer - * @pb_to: pointer to destination print buffer structure - * @pb_from: pointer to source print buffer structure - * - * Current contents of destination print buffer (if any) are discarded. - * Source print buffer becomes empty if a successful move occurs. - */ -static void tipc_printbuf_move(struct print_buf *pb_to, - struct print_buf *pb_from) -{ - int len; - - /* Handle the cases where contents can't be moved */ - if (!pb_to->buf) - return; - - if (!pb_from->buf) { - tipc_printbuf_reset(pb_to); - return; - } - - if (pb_to->size < pb_from->size) { - strcpy(pb_to->buf, "*** PRINT BUFFER MOVE ERROR ***"); - pb_to->buf[pb_to->size - 1] = ~0; - pb_to->crs = strchr(pb_to->buf, 0); - return; - } - - /* Copy data from char after cursor to end (if used) */ - len = pb_from->buf + pb_from->size - pb_from->crs - 2; - if ((pb_from->buf[pb_from->size - 1] == 0) && (len > 0)) { - strcpy(pb_to->buf, pb_from->crs + 1); - pb_to->crs = pb_to->buf + len; - } else - pb_to->crs = pb_to->buf; - - /* Copy data from start to cursor (always) */ - len = pb_from->crs - pb_from->buf; - strcpy(pb_to->crs, pb_from->buf); - pb_to->crs += len; - - tipc_printbuf_reset(pb_from); -} /** * tipc_snprintf - append formatted output to print buffer @@ -185,84 +53,3 @@ int tipc_snprintf(char *buf, int len, const char *fmt, ...) va_end(args); return i; } - -/** - * tipc_log_resize - change the size of the TIPC log buffer - * @log_size: print buffer size to use - */ -int tipc_log_resize(int log_size) -{ - int res = 0; - - spin_lock_bh(&print_lock); - kfree(TIPC_LOG->buf); - TIPC_LOG->buf = NULL; - if (log_size) { - if (log_size < TIPC_PB_MIN_SIZE) - log_size = TIPC_PB_MIN_SIZE; - res = TIPC_LOG->echo; - tipc_printbuf_init(TIPC_LOG, kmalloc(log_size, GFP_ATOMIC), - log_size); - TIPC_LOG->echo = res; - res = !TIPC_LOG->buf; - } - spin_unlock_bh(&print_lock); - - return res; -} - -/** - * tipc_log_resize_cmd - reconfigure size of TIPC log buffer - */ -struct sk_buff *tipc_log_resize_cmd(const void *req_tlv_area, int req_tlv_space) -{ - u32 value; - - if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED)) - return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR); - - value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area)); - if (value > 32768) - return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE - " (log size must be 0-32768)"); - if (tipc_log_resize(value)) - return tipc_cfg_reply_error_string( - "unable to create specified log (log size is now 0)"); - return tipc_cfg_reply_none(); -} - -/** - * tipc_log_dump - capture TIPC log buffer contents in configuration message - */ -struct sk_buff *tipc_log_dump(void) -{ - struct sk_buff *reply; - - spin_lock_bh(&print_lock); - if (!TIPC_LOG->buf) { - spin_unlock_bh(&print_lock); - reply = tipc_cfg_reply_ultra_string("log not activated\n"); - } else if (tipc_printbuf_empty(TIPC_LOG)) { - spin_unlock_bh(&print_lock); - reply = tipc_cfg_reply_ultra_string("log is empty\n"); - } else { - struct tlv_desc *rep_tlv; - struct print_buf pb; - int str_len; - - str_len = min(TIPC_LOG->size, 32768u); - spin_unlock_bh(&print_lock); - reply = tipc_cfg_reply_alloc(TLV_SPACE(str_len)); - if (reply) { - rep_tlv = (struct tlv_desc *)reply->data; - tipc_printbuf_init(&pb, TLV_DATA(rep_tlv), str_len); - spin_lock_bh(&print_lock); - tipc_printbuf_move(&pb, TIPC_LOG); - spin_unlock_bh(&print_lock); - str_len = strlen(TLV_DATA(rep_tlv)) + 1; - skb_put(reply, TLV_SPACE(str_len)); - TLV_SET(rep_tlv, TIPC_TLV_ULTRA_STRING, NULL, str_len); - } - } - return reply; -} diff --git a/net/tipc/log.h b/net/tipc/log.h deleted file mode 100644 index d1f5eb967fd8..000000000000 --- a/net/tipc/log.h +++ /dev/null @@ -1,66 +0,0 @@ -/* - * net/tipc/log.h: Include file for TIPC print buffer routines - * - * Copyright (c) 1997-2006, Ericsson AB - * Copyright (c) 2005-2007, Wind River Systems - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. 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. - * 3. Neither the names of the copyright holders nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * 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. - */ - -#ifndef _TIPC_LOG_H -#define _TIPC_LOG_H - -/** - * struct print_buf - TIPC print buffer structure - * @buf: pointer to character array containing print buffer contents - * @size: size of character array - * @crs: pointer to first unused space in character array (i.e. final NUL) - * @echo: echo output to system console if non-zero - */ -struct print_buf { - char *buf; - u32 size; - char *crs; - int echo; -}; - -#define TIPC_PB_MIN_SIZE 64 /* minimum size for a print buffer's array */ -#define TIPC_PB_MAX_STR 512 /* max printable string (with trailing NUL) */ - -void tipc_printbuf_init(struct print_buf *pb, char *buf, u32 size); -int tipc_printbuf_validate(struct print_buf *pb); - -int tipc_log_resize(int log_size); - -struct sk_buff *tipc_log_resize_cmd(const void *req_tlv_area, - int req_tlv_space); -struct sk_buff *tipc_log_dump(void); - -#endif |