diff options
Diffstat (limited to 'drivers/staging/batman-adv')
| -rw-r--r-- | drivers/staging/batman-adv/Kconfig | 4 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/Makefile | 2 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/README | 50 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/bitarray.c | 15 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/device.c | 13 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/hard-interface.c | 36 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/log.c | 179 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/main.c | 25 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/main.h | 45 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/originator.c | 243 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/originator.h (renamed from drivers/staging/batman-adv/log.h) | 19 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/proc.c | 171 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/routing.c | 1240 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/routing.h | 12 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/send.c | 56 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/soft-interface.c | 3 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/translation-table.c | 22 | ||||
| -rw-r--r-- | drivers/staging/batman-adv/vis.c | 12 |
18 files changed, 1101 insertions, 1046 deletions
diff --git a/drivers/staging/batman-adv/Kconfig b/drivers/staging/batman-adv/Kconfig index 1d74dabf9511..69e8fb039be0 100644 --- a/drivers/staging/batman-adv/Kconfig +++ b/drivers/staging/batman-adv/Kconfig @@ -14,10 +14,10 @@ config BATMAN_ADV http://www.open-mesh.org/ for more information and user space tools. -config BATMAN_DEBUG +config BATMAN_ADV_DEBUG bool "B.A.T.M.A.N. debugging" depends on BATMAN_ADV != n - help + ---help--- This is an option for use by developers; most people should say N here. This enables compilation of support for diff --git a/drivers/staging/batman-adv/Makefile b/drivers/staging/batman-adv/Makefile index 02da87134fce..42b4e6370263 100644 --- a/drivers/staging/batman-adv/Makefile +++ b/drivers/staging/batman-adv/Makefile @@ -19,4 +19,4 @@ # obj-m += batman-adv.o -batman-adv-objs := main.o proc.o send.o routing.o soft-interface.o device.o translation-table.o bitarray.o hash.o ring_buffer.o vis.o hard-interface.o aggregation.o log.o +batman-adv-objs := main.o proc.o send.o routing.o soft-interface.o device.o translation-table.o bitarray.o hash.o ring_buffer.o vis.o hard-interface.o aggregation.o originator.o diff --git a/drivers/staging/batman-adv/README b/drivers/staging/batman-adv/README index 3aaf393ebaa7..a6a419de0b50 100644 --- a/drivers/staging/batman-adv/README +++ b/drivers/staging/batman-adv/README @@ -1,4 +1,4 @@ -[state: 07-11-2009] +[state: 13-11-2009] BATMAN-ADV ---------- @@ -96,6 +96,54 @@ To deactivate batman, do: # echo "" > /proc/net/batman-adv/interfaces +LOGGING/DEBUGGING +----------------- + +All error messages, warnings and information messages are sent to the +kernel log. Depending on your operating system distribution this can be +read in one of a number of ways. Try using the commands: dmesg, +logread, or looking in the files /var/log/kern.log or +/var/log/syslog. All batman-adv messages are prefixed with +"batman-adv:" So to see just these messages try + +dmesg | grep batman-adv + +When investigating problems with your mesh network it is sometimes +necessary to see more detail debug messages. This must be enabled when +compiling the batman-adv module. When building batman-adv as part of +kernel, use "make menuconfig" and enable the option +"B.A.T.M.A.N. debugging". When compiling outside of the kernel tree it +is necessary to edit the file Makefile.kbuild and uncomment the line + +#EXTRA_CFLAGS += -DCONFIG_BATMAN_ADV_DEBUG + +The additional debug output is by default disabled. It can be enabled +either at kernel modules load time or during run time. To enable debug +output at module load time, add the module parameter debug=<value>. +<value> can take one of four values. + +0 - All debug output disabled +1 - Enable messages related to routing / flooding / broadcasting +2 - Enable route or hna added / changed / deleted +3 - Enable all messages + +e.g. + +modprobe batman-adv debug=2 + +will load the module and enable debug messages for when routes or HNAs +change. + +The debug output can also be changed at runtime using the file +/sys/module/batman-adv/parameters/debug. e.g. + +echo 2 > /sys/module/batman-adv/parameters/debug + +enables debug messages for when routes or HNAs + +The debug output is sent to the kernel logs. So try dmesg, logread etc +to see the debug messages. + BATCTL ------ diff --git a/drivers/staging/batman-adv/bitarray.c b/drivers/staging/batman-adv/bitarray.c index 3c67f5f42b2b..212eef93afe4 100644 --- a/drivers/staging/batman-adv/bitarray.c +++ b/drivers/staging/batman-adv/bitarray.c @@ -21,7 +21,6 @@ #include "main.h" #include "bitarray.h" -#include "log.h" /* returns true if the corresponding bit in the given seq_bits indicates true * and curr_seqno is within range of last_seqno */ @@ -80,8 +79,8 @@ void bit_shift(TYPE_OF_WORD *seq_bits, int32_t n) * from. * * left is high, right is low: FEDC BA98 7654 3210 - * ^^ ^^ - * vvvv + * ^^ ^^ + * vvvv * ^^^^ = from, vvvvv =to, we'd have word_num==1 and * word_offset==WORD_BIT_SIZE/2 ????? in this example. * (=24 bits) @@ -133,13 +132,13 @@ char bit_get_packet(TYPE_OF_WORD *seq_bits, int16_t seq_num_diff, (seq_num_diff < -TQ_LOCAL_WINDOW_SIZE)) { if (seq_num_diff > TQ_LOCAL_WINDOW_SIZE) - debug_log(LOG_TYPE_BATMAN, - "We missed a lot of packets (%i) !\n", - seq_num_diff-1); + bat_dbg(DBG_BATMAN, + "We missed a lot of packets (%i) !\n", + seq_num_diff-1); if (-seq_num_diff > TQ_LOCAL_WINDOW_SIZE) - debug_log(LOG_TYPE_BATMAN, - "Other host probably restarted !\n"); + bat_dbg(DBG_BATMAN, + "Other host probably restarted !\n"); for (i = 0; i < NUM_WORDS; i++) seq_bits[i] = 0; diff --git a/drivers/staging/batman-adv/device.c b/drivers/staging/batman-adv/device.c index 1e7d1f88674f..12f2de98b3d0 100644 --- a/drivers/staging/batman-adv/device.c +++ b/drivers/staging/batman-adv/device.c @@ -21,7 +21,6 @@ #include "main.h" #include "device.h" -#include "log.h" #include "send.h" #include "types.h" #include "hash.h" @@ -60,7 +59,7 @@ int bat_device_setup(void) /* register our device - kernel assigns a free major number */ tmp_major = register_chrdev(0, DRIVER_DEVICE, &fops); if (tmp_major < 0) { - debug_log(LOG_TYPE_WARN, "Registering the character device failed with %d\n", + printk(KERN_ERR "batman-adv:Registering the character device failed with %d\n", tmp_major); return 0; } @@ -68,7 +67,7 @@ int bat_device_setup(void) batman_class = class_create(THIS_MODULE, "batman-adv"); if (IS_ERR(batman_class)) { - debug_log(LOG_TYPE_WARN, "Could not register class 'batman-adv' \n"); + printk(KERN_ERR "batman-adv:Could not register class 'batman-adv' \n"); return 0; } @@ -111,7 +110,7 @@ int bat_device_open(struct inode *inode, struct file *file) } if (device_client_hash[i] != device_client) { - debug_log(LOG_TYPE_WARN, "Error - can't add another packet client: maximum number of clients reached \n"); + printk(KERN_ERR "batman-adv:Error - can't add another packet client: maximum number of clients reached \n"); kfree(device_client); return -EXFULL; } @@ -208,7 +207,7 @@ ssize_t bat_device_write(struct file *file, const char __user *buff, struct batman_if *batman_if; if (len < sizeof(struct icmp_packet)) { - debug_log(LOG_TYPE_NOTICE, "Error - can't send packet from char device: invalid packet size\n"); + printk(KERN_DEBUG "batman-adv:Error - can't send packet from char device: invalid packet size\n"); return -EINVAL; } @@ -219,12 +218,12 @@ ssize_t bat_device_write(struct file *file, const char __user *buff, return -EFAULT; if (icmp_packet.packet_type != BAT_ICMP) { - debug_log(LOG_TYPE_NOTICE, "Error - can't send packet from char device: got bogus packet type (expected: BAT_ICMP)\n"); + printk(KERN_DEBUG "batman-adv:Error - can't send packet from char device: got bogus packet type (expected: BAT_ICMP)\n"); return -EINVAL; } if (icmp_packet.msg_type != ECHO_REQUEST) { - debug_log(LOG_TYPE_NOTICE, "Error - can't send packet from char device: got bogus message type (expected: ECHO_REQUEST)\n"); + printk(KERN_DEBUG "batman-adv:Error - can't send packet from char device: got bogus message type (expected: ECHO_REQUEST)\n"); return -EINVAL; } diff --git a/drivers/staging/batman-adv/hard-interface.c b/drivers/staging/batman-adv/hard-interface.c index 5ea35da5ee7a..e9cb977d0016 100644 --- a/drivers/staging/batman-adv/hard-interface.c +++ b/drivers/staging/batman-adv/hard-interface.c @@ -21,7 +21,6 @@ #include "main.h" #include "hard-interface.h" -#include "log.h" #include "soft-interface.h" #include "send.h" #include "translation-table.h" @@ -87,9 +86,9 @@ static void check_known_mac_addr(uint8_t *addr) continue; addr_to_string(mac_string, addr); - debug_log(LOG_TYPE_WARN, "The newly added mac address (%s) already exists on: %s\n", - mac_string, batman_if->dev); - debug_log(LOG_TYPE_WARN, "It is strongly recommended to keep mac addresses unique to avoid problems!\n"); + printk(KERN_WARNING "batman-adv:The newly added mac address (%s) already exists on: %s\n", + mac_string, batman_if->dev); + printk(KERN_WARNING "batman-adv:It is strongly recommended to keep mac addresses unique to avoid problems!\n"); } rcu_read_unlock(); } @@ -171,8 +170,8 @@ void hardif_deactivate_interface(struct batman_if *batman_if) batman_if->if_active = IF_INACTIVE; active_ifs--; - debug_log(LOG_TYPE_NOTICE, "Interface deactivated: %s\n", - batman_if->dev); + printk(KERN_INFO "batman-adv:Interface deactivated: %s\n", + batman_if->dev); } /* (re)activate given interface. */ @@ -197,7 +196,7 @@ static void hardif_activate_interface(struct batman_if *batman_if) &batman_if->raw_sock); if (retval < 0) { - debug_log(LOG_TYPE_WARN, "Can't create raw socket: %i\n", + printk(KERN_ERR "batman-adv:Can't create raw socket: %i\n", retval); goto sock_err; } @@ -210,7 +209,7 @@ static void hardif_activate_interface(struct batman_if *batman_if) (struct sockaddr *)&bind_addr, sizeof(bind_addr)); if (retval < 0) { - debug_log(LOG_TYPE_WARN, "Can't create bind raw socket: %i\n", + printk(KERN_ERR "batman-adv:Can't create bind raw socket: %i\n", retval); goto bind_err; } @@ -235,8 +234,8 @@ static void hardif_activate_interface(struct batman_if *batman_if) if (batman_if->if_num == 0) set_main_if_addr(batman_if->net_dev->dev_addr); - debug_log(LOG_TYPE_NOTICE, "Interface activated: %s\n", - batman_if->dev); + printk(KERN_INFO "batman-adv:Interface activated: %s\n", + batman_if->dev); return; @@ -290,7 +289,7 @@ static int resize_orig(struct orig_node *orig_node, int if_num) data_ptr = kmalloc((if_num + 1) * sizeof(TYPE_OF_WORD) * NUM_WORDS, GFP_ATOMIC); if (!data_ptr) { - debug_log(LOG_TYPE_WARN, "Can't resize orig: out of memory\n"); + printk(KERN_ERR "batman-adv:Can't resize orig: out of memory\n"); return -1; } @@ -301,7 +300,7 @@ static int resize_orig(struct orig_node *orig_node, int if_num) data_ptr = kmalloc((if_num + 1) * sizeof(uint8_t), GFP_ATOMIC); if (!data_ptr) { - debug_log(LOG_TYPE_WARN, "Can't resize orig: out of memory\n"); + printk(KERN_ERR "batman-adv:Can't resize orig: out of memory\n"); return -1; } @@ -324,7 +323,7 @@ int hardif_add_interface(char *dev, int if_num) batman_if = kmalloc(sizeof(struct batman_if), GFP_KERNEL); if (!batman_if) { - debug_log(LOG_TYPE_WARN, "Can't add interface (%s): out of memory\n", dev); + printk(KERN_ERR "batman-adv:Can't add interface (%s): out of memory\n", dev); return -1; } @@ -339,7 +338,7 @@ int hardif_add_interface(char *dev, int if_num) batman_if->packet_buff = kmalloc(batman_if->packet_len, GFP_KERNEL); if (!batman_if->packet_buff) { - debug_log(LOG_TYPE_WARN, "Can't add interface packet (%s): out of memory\n", dev); + printk(KERN_ERR "batman-adv:Can't add interface packet (%s): out of memory\n", dev); goto out; } @@ -348,7 +347,7 @@ int hardif_add_interface(char *dev, int if_num) batman_if->if_active = IF_INACTIVE; INIT_RCU_HEAD(&batman_if->rcu); - debug_log(LOG_TYPE_NOTICE, "Adding interface: %s\n", dev); + printk(KERN_INFO "batman-adv:Adding interface: %s\n", dev); avail_ifs++; INIT_LIST_HEAD(&batman_if->list); @@ -389,7 +388,7 @@ int hardif_add_interface(char *dev, int if_num) spin_unlock(&orig_hash_lock); if (!hardif_is_interface_up(batman_if->dev)) - debug_log(LOG_TYPE_WARN, "Not using interface %s (retrying later): interface not active\n", batman_if->dev); + printk(KERN_ERR "batman-adv:Not using interface %s (retrying later): interface not active\n", batman_if->dev); else hardif_activate_interface(batman_if); @@ -413,7 +412,7 @@ char hardif_get_active_if_num(void) } static int hard_if_event(struct notifier_block *this, - unsigned long event, void *ptr) + unsigned long event, void *ptr) { struct net_device *dev = (struct net_device *)ptr; struct batman_if *batman_if = get_batman_if_by_name(dev->name); @@ -436,7 +435,6 @@ static int hard_if_event(struct notifier_block *this, break; /* NETDEV_CHANGEADDR - mac address change - what are we doing here ? */ default: - /* debug_log(LOG_TYPE_CRIT, "hard_if_event: %s %i\n", dev->name, event); */ break; }; @@ -447,5 +445,5 @@ out: } struct notifier_block hard_if_notifier = { - .notifier_call = hard_if_event, + .notifier_call = hard_if_event, }; diff --git a/drivers/staging/batman-adv/log.c b/drivers/staging/batman-adv/log.c deleted file mode 100644 index f37c7f01a9f5..000000000000 --- a/drivers/staging/batman-adv/log.c +++ /dev/null @@ -1,179 +0,0 @@ -/* - * Copyright (C) 2007-2009 B.A.T.M.A.N. contributors: - * - * Marek Lindner, Simon Wunderlich - * - * 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. - * - * You should have received a copy of the GNU General Public License - * along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA - * - */ - -#include "main.h" -#include "log.h" - -#define LOG_BUF_MASK (log_buf_len-1) -#define LOG_BUF(idx) (log_buf[(idx) & LOG_BUF_MASK]) - -static char log_buf[LOG_BUF_LEN]; -static int log_buf_len = LOG_BUF_LEN; -static unsigned long log_start; -static unsigned long log_end; -uint8_t log_level; - -static DEFINE_SPINLOCK(logbuf_lock); - -const struct file_operations proc_log_operations = { - .open = log_open, - .release = log_release, - .read = log_read, - .write = log_write, - .poll = log_poll, -}; - -static DECLARE_WAIT_QUEUE_HEAD(log_wait); - -static void emit_log_char(char c) -{ - LOG_BUF(log_end) = c; - log_end++; - - if (log_end - log_start > log_buf_len) - log_start = log_end - log_buf_len; -} - -static int fdebug_log(char *fmt, ...) -{ - int printed_len; - char *p; - va_list args; - static char debug_log_buf[256]; - unsigned long flags; - - spin_lock_irqsave(&logbuf_lock, flags); - va_start(args, fmt); - printed_len = vscnprintf(debug_log_buf, sizeof(debug_log_buf), fmt, - args); - va_end(args); - - for (p = debug_log_buf; *p != 0; p++) - emit_log_char(*p); - - spin_unlock_irqrestore(&logbuf_lock, flags); - - wake_up(&log_wait); - - return 0; -} - -int debug_log(int type, char *fmt, ...) -{ - va_list args; - int retval = 0; - char tmp_log_buf[256]; - - /* only critical information get into the official kernel log */ - if (type == LOG_TYPE_CRIT) { - va_start(args, fmt); - vscnprintf(tmp_log_buf, sizeof(tmp_log_buf), fmt, args); - printk(KERN_ERR "batman-adv: %s", tmp_log_buf); - va_end(args); - } - - if ((type == LOG_TYPE_CRIT) || (log_level & type)) { - va_start(args, fmt); - vscnprintf(tmp_log_buf, sizeof(tmp_log_buf), fmt, args); - fdebug_log("[%10u] %s", (jiffies / HZ), tmp_log_buf); - va_end(args); - } - - return retval; -} - -int log_open(struct inode *inode, struct file *file) -{ - inc_module_count(); - return 0; -} - -int log_release(struct inode *inode, struct file *file) -{ - dec_module_count(); - return 0; -} - -ssize_t log_read(struct file *file, char __user *buf, size_t count, - loff_t *ppos) -{ - int error, i = 0; - char c; - unsigned long flags; - - if ((file->f_flags & O_NONBLOCK) && !(log_end - log_start)) - return -EAGAIN; - - if ((!buf) || (count < 0)) - return -EINVAL; - - if (count == 0) - return 0; - - if (!access_ok(VERIFY_WRITE, buf, count)) - return -EFAULT; - - error = wait_event_interruptible(log_wait, (log_start - log_end)); - - if (error) - return error; - - spin_lock_irqsave(&logbuf_lock, flags); - - while ((!error) && (log_start != log_end) && (i < count)) { - c = LOG_BUF(log_start); - - log_start++; - - spin_unlock_irqrestore(&logbuf_lock, flags); - - error = __put_user(c, buf); - - spin_lock_irqsave(&logbuf_lock, flags); - - buf++; - i++; - - } - - spin_unlock_irqrestore(&logbuf_lock, flags); - - if (!error) - return i; - - return error; -} - -ssize_t log_write(struct file *file, const char __user *buf, size_t count, - loff_t *ppos) -{ - return count; -} - -unsigned int log_poll(struct file *file, poll_table *wait) -{ - poll_wait(file, &log_wait, wait); - - if (log_end - log_start) - return POLLIN | POLLRDNORM; - - return 0; -} diff --git a/drivers/staging/batman-adv/main.c b/drivers/staging/batman-adv/main.c index bb89bfc5dda6..434c600a6a47 100644 --- a/drivers/staging/batman-adv/main.c +++ b/drivers/staging/batman-adv/main.c @@ -21,9 +21,9 @@ #include "main.h" #include "proc.h" -#include "log.h" #include "routing.h" #include "send.h" +#include "originator.h" #include "soft-interface.h" #include "device.h" #include "translation-table.h" @@ -57,6 +57,17 @@ atomic_t module_state; struct workqueue_struct *bat_event_workqueue; +#ifdef CONFIG_BATMAN_ADV_DEBUG +int debug; + +module_param(debug, int, 0644); + +int bat_debug_type(int type) +{ + return debug & type; +} +#endif + int init_module(void) { int retval; @@ -90,21 +101,21 @@ int init_module(void) interface_setup); if (!soft_device) { - debug_log(LOG_TYPE_CRIT, "Unable to allocate the batman interface\n"); + printk(KERN_ERR "batman-adv:Unable to allocate the batman interface\n"); goto end; } retval = register_netdev(soft_device); if (retval < 0) { - debug_log(LOG_TYPE_CRIT, "Unable to register the batman interface: %i\n", retval); + printk(KERN_ERR "batman-adv:Unable to register the batman interface: %i\n", retval); goto free_soft_device; } register_netdevice_notifier(&hard_if_notifier); - debug_log(LOG_TYPE_CRIT, "B.A.T.M.A.N. advanced %s%s (compatibility version %i) loaded \n", - SOURCE_VERSION, REVISION_VERSION_STR, COMPAT_VERSION); + printk(KERN_INFO "batman-adv:B.A.T.M.A.N. advanced %s%s (compatibility version %i) loaded \n", + SOURCE_VERSION, REVISION_VERSION_STR, COMPAT_VERSION); return 0; @@ -156,7 +167,7 @@ void activate_module(void) kthread_task = kthread_run(packet_recv_thread, NULL, "batman-adv"); if (IS_ERR(kthread_task)) { - debug_log(LOG_TYPE_CRIT, "Unable to start packet receive thread\n"); + printk(KERN_ERR "batman-adv:Unable to start packet receive thread\n"); kthread_task = NULL; } } @@ -166,7 +177,7 @@ void activate_module(void) goto end; err: - debug_log(LOG_TYPE_CRIT, "Unable to allocate memory for mesh information structures: out of mem ?\n"); + printk(KERN_ERR "batman-adv:Unable to allocate memory for mesh information structures: out of mem ?\n"); shutdown_module(); end: return; diff --git a/drivers/staging/batman-adv/main.h b/drivers/staging/batman-adv/main.h index facb6b79ee52..eb6a702c6444 100644 --- a/drivers/staging/batman-adv/main.h +++ b/drivers/staging/batman-adv/main.h @@ -33,16 +33,16 @@ #define TQ_MAX_VALUE 255 #define JITTER 20 -#define TTL 50 /* Time To Live of broadcast messages */ -#define MAX_ADDR 16 /* number of interfaces which can be added to +#define TTL 50 /* Time To Live of broadcast messages */ +#define MAX_ADDR 16 /* number of interfaces which can be added to * batman. */ -#define PURGE_TIMEOUT 200000 /* purge originators after time in ms if no +#define PURGE_TIMEOUT 200000 /* purge originators after time in ms if no * valid packet comes in -> TODO: check * influence on TQ_LOCAL_WINDOW_SIZE */ #define LOCAL_HNA_TIMEOUT 3600000 -#define TQ_LOCAL_WINDOW_SIZE 64 /* sliding packet range of received originator +#define TQ_LOCAL_WINDOW_SIZE 64 /* sliding packet range of received originator * messages in squence numbers (should be a * multiple of our word size) */ #define TQ_GLOBAL_WINDOW_SIZE 5 @@ -69,24 +69,27 @@ /* - * Logging + * Debug Messages */ -#define LOG_TYPE_CRIT 0 /* highest priority for fatal errors such as - * blocked sockets / failed packet delivery / - * programming errors */ -#define LOG_TYPE_WARN 1 /* warnings for small errors like wrong user - * input / damaged packets / etc */ -#define LOG_TYPE_NOTICE 2 /* notice information for new interfaces / - * changed settings / new originators / etc */ -#define LOG_TYPE_BATMAN 4 /* all messages related to routing / flooding / - * broadcasting / etc */ -#define LOG_TYPE_ROUTES 8 /* route or hna added / changed / deleted */ -#define LOG_TYPE_CRIT_NAME "critical" -#define LOG_TYPE_WARN_NAME "warnings" -#define LOG_TYPE_NOTICE_NAME "notices" -#define LOG_TYPE_BATMAN_NAME "batman" -#define LOG_TYPE_ROUTES_NAME "routes" +#define DBG_BATMAN 1 /* all messages related to routing / flooding / + * broadcasting / etc */ +#define DBG_ROUTES 2 /* route or hna added / changed / deleted */ + +#ifdef CONFIG_BATMAN_ADV_DEBUG +extern int debug; + +extern int bat_debug_type(int type); +#define bat_dbg(type, fmt, arg...) do { \ + if (bat_debug_type(type)) \ + printk(KERN_DEBUG "batman-adv:" fmt, ## arg); \ + } \ + while (0) +#else /* !CONFIG_BATMAN_ADV_DEBUG */ +#define bat_dbg(type, fmt, arg...) do { \ + } \ + while (0) +#endif /* * Vis @@ -147,5 +150,3 @@ int choose_orig(void *data, int32_t size); int is_my_mac(uint8_t *addr); int is_bcast(uint8_t *addr); int is_mcast(uint8_t *addr); - - diff --git a/drivers/staging/batman-adv/originator.c b/drivers/staging/batman-adv/originator.c new file mode 100644 index 000000000000..9962af7ae640 --- /dev/null +++ b/drivers/staging/batman-adv/originator.c @@ -0,0 +1,243 @@ +/* + * Copyright (C) 2009 B.A.T.M.A.N. contributors: + * + * Marek Lindner, Simon Wunderlich + * + * 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. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA + * 02110-1301, USA + * + */ + +/* increase the reference counter for this originator */ + +#include "main.h" +#include "originator.h" +#include "hash.h" +#include "translation-table.h" +#include "routing.h" + + +static DECLARE_DELAYED_WORK(purge_orig_wq, purge_orig); + +static void start_purge_timer(void) +{ + queue_delayed_work(bat_event_workqueue, &purge_orig_wq, 1 * HZ); +} + +int originator_init(void) +{ + if (orig_hash) + return 1; + + spin_lock(&orig_hash_lock); + orig_hash = hash_new(128, compare_orig, choose_orig); + + if (!orig_hash) + goto err; + + spin_unlock(&orig_hash_lock); + start_purge_timer(); + return 1; + +err: + spin_unlock(&orig_hash_lock); + return 0; +} + +void originator_free(void) +{ + if (!orig_hash) + return; + + cancel_delayed_work_sync(&purge_orig_wq); + + spin_lock(&orig_hash_lock); + hash_delete(orig_hash, free_orig_node); + orig_hash = NULL; + spin_unlock(&orig_hash_lock); +} + +struct neigh_node * +create_neighbor(struct orig_node *orig_node, struct orig_node *orig_neigh_node, + uint8_t *neigh, struct batman_if *if_incoming) +{ + struct neigh_node *neigh_node; + + bat_dbg(DBG_BATMAN, "Creating new last-hop neighbour of originator\n"); + + neigh_node = kmalloc(sizeof(struct neigh_node), GFP_ATOMIC); + memset(neigh_node, 0, sizeof(struct neigh_node)); + INIT_LIST_HEAD(&neigh_node->list); + + memcpy(neigh_node->addr, neigh, ETH_ALEN); + neigh_node->orig_node = orig_neigh_node; + neigh_node->if_incoming = if_incoming; + + list_add_tail(&neigh_node->list, &orig_node->neigh_list); + return neigh_node; +} + +void free_orig_node(void *data) +{ + struct list_head *list_pos, *list_pos_tmp; + struct neigh_node *neigh_node; + struct orig_node *orig_node = (struct orig_node *)data; + + /* for all neighbours towards this originator ... */ + list_for_each_safe(list_pos, list_pos_tmp, &orig_node->neigh_list) { + neigh_node = list_entry(list_pos, struct neigh_node, list); + + list_del(list_pos); + kfree(neigh_node); + } + + hna_global_del_orig(orig_node, "originator timed out"); + + kfree(orig_node->bcast_own); + kfree(orig_node->bcast_own_sum); + kfree(orig_node); +} + +/* this function finds or creates an originator entry for the given + * address if it does not exits */ +struct orig_node *get_orig_node(uint8_t *addr) +{ + struct orig_node *orig_node; + struct hashtable_t *swaphash; + char orig_str[ETH_STR_LEN]; + int size; + + orig_node = ((struct orig_node *)hash_find(orig_hash, addr)); + + if (orig_node != NULL) + return orig_node; + + addr_to_string(orig_str, addr); + bat_dbg(DBG_BATMAN, "Creating new originator: %s \n", orig_str); + + orig_node = kmalloc(sizeof(struct orig_node), GFP_ATOMIC); + memset(orig_node, 0, sizeof(struct orig_node)); + INIT_LIST_HEAD(&orig_node->neigh_list); + + memcpy(orig_node->orig, addr, ETH_ALEN); + orig_node->router = NULL; + orig_node->batman_if = NULL; + orig_node->hna_buff = NULL; + + size = num_ifs * sizeof(TYPE_OF_WORD) * NUM_WORDS; + + orig_node->bcast_own = kmalloc(size, GFP_ATOMIC); + memset(orig_node->bcast_own, 0, size); + + size = num_ifs * sizeof(uint8_t); + orig_node->bcast_own_sum = kmalloc(size, GFP_ATOMIC); + memset(orig_node->bcast_own_sum, 0, size); + + hash_add(orig_hash, orig_node); + + if (orig_hash->elements * 4 > orig_hash->size) { + swaphash = hash_resize(orig_hash, orig_hash->size * 2); + + if (swaphash == NULL) + printk(KERN_ERR + "batman-adv:Couldn't resize orig hash table \n"); + else + orig_hash = swaphash; + } + + return orig_node; +} + +static bool purge_orig_neigbours(struct orig_node *orig_node, + struct neigh_node **best_neigh_node) +{ + struct list_head *list_pos, *list_pos_tmp; + char neigh_str[ETH_STR_LEN], orig_str[ETH_STR_LEN]; + struct neigh_node *neigh_node; + bool neigh_purged = false; + + *best_neigh_node = NULL; + + + /* for all neighbours towards this originator ... */ + list_for_each_safe(list_pos, list_pos_tmp, &orig_node->neigh_list) { + neigh_node = list_entry(list_pos, struct neigh_node, list); + + if (time_after(jiffies, + (neigh_node->last_valid + + ((PURGE_TIMEOUT * HZ) / 1000)))) { + + addr_to_string(neigh_str, neigh_node->addr); + addr_to_string(orig_str, orig_node->orig); + bat_dbg(DBG_BATMAN, "Neighbour timeout: originator %s, neighbour: %s, last_valid %lu\n", orig_str, neigh_str, (neigh_node->last_valid / HZ)); + + neigh_purged = true; + list_del(list_pos); + kfree(neigh_node); + } else { + if ((*best_neigh_node == NULL) || + (neigh_node->tq_avg > (*best_neigh_node)->tq_avg)) + *best_neigh_node = neigh_node; + } + } + return neigh_purged; +} + + +static bool purge_orig_node(struct orig_node *orig_node) +{ + struct neigh_node *best_neigh_node; + char orig_str[ETH_STR_LEN]; + + addr_to_string(orig_str, orig_node->orig); + + if (time_after(jiffies, + (orig_node->last_valid + + ((2 * PURGE_TIMEOUT * HZ) / 1000)))) { + + bat_dbg(DBG_BATMAN, + "Originator timeout: originator %s, last_valid %lu\n", + orig_str, (orig_node->last_valid / HZ)); + return true; + } else { + if (purge_orig_neigbours(orig_node, &best_neigh_node)) + update_routes(orig_node, best_neigh_node, + orig_node->hna_buff, + orig_node->hna_buff_len); + } + return false; +} + +void purge_orig(struct work_struct *work) +{ + struct hash_it_t *hashit = NULL; + struct orig_node *orig_node; + + spin_lock(&orig_hash_lock); + + /* for all origins... */ + while (NULL != (hashit = hash_iterate(orig_hash, hashit))) { + orig_node = hashit->bucket->data; + if (purge_orig_node(orig_node)) { + hash_remove_bucket(orig_hash, hashit); + free_orig_node(orig_node); + } + } + + spin_unlock(&orig_hash_lock); + + start_purge_timer(); +} + + diff --git a/drivers/staging/batman-adv/log.h b/drivers/staging/batman-adv/originator.h index 780e3abb48f9..6ef7a054a0a9 100644 --- a/drivers/staging/batman-adv/log.h +++ b/drivers/staging/batman-adv/originator.h @@ -19,14 +19,13 @@ * */ -extern const struct file_operations proc_log_operations; -extern uint8_t log_level; +int originator_init(void); +void free_orig_node(void *data); +void originator_free(void); +void purge_orig(struct work_struct *work); +struct orig_node *orig_find(char *mac); +struct orig_node *get_orig_node(uint8_t *addr); +struct neigh_node * +create_neighbor(struct orig_node *orig_node, struct orig_node *orig_neigh_node, + uint8_t *neigh, struct batman_if *if_incoming); -int debug_log(int type, char *fmt, ...); -int log_open(struct inode *inode, struct file *file); -int log_release(struct inode *inode, struct file *file); -ssize_t log_read(struct file *file, char __user *buf, size_t count, - loff_t *ppos); -ssize_t log_write(struct file *file, const char __user *buf, size_t count, - loff_t *ppos); -unsigned int log_poll(struct file *file, poll_table *wait); diff --git a/drivers/staging/batman-adv/proc.c b/drivers/staging/batman-adv/proc.c index aac3df7f13fb..ed4c73484d7d 100644 --- a/drivers/staging/batman-adv/proc.c +++ b/drivers/staging/batman-adv/proc.c @@ -21,7 +21,6 @@ #include "main.h" #include "proc.h" -#include "log.h" #include "routing.h" #include "translation-table.h" #include "hard-interface.h" @@ -34,7 +33,6 @@ static uint8_t vis_format = DOT_DRAW; static struct proc_dir_entry *proc_batman_dir, *proc_interface_file; static struct proc_dir_entry *proc_orig_interval_file, *proc_originators_file; -static struct proc_dir_entry *proc_log_file, *proc_log_level_file; static struct proc_dir_entry *proc_transt_local_file; static struct proc_dir_entry *proc_transt_global_file; static struct proc_dir_entry *proc_vis_file, *proc_vis_format_file; @@ -77,8 +75,7 @@ static ssize_t proc_interfaces_write(struct file *instance, return -ENOMEM; if (count > IFNAMSIZ - 1) { - debug_log(LOG_TYPE_WARN, - "Can't add interface: device name is too long\n"); + printk(KERN_WARNING "batman-adv:Can't add interface: device name is too long\n"); goto end; } @@ -105,7 +102,7 @@ static ssize_t proc_interfaces_write(struct file *instance, rcu_read_lock(); list_for_each_entry_rcu(batman_if, &if_list, list) { if (strncmp(batman_if->dev, if_string, count) == 0) { - debug_log(LOG_TYPE_WARN, "Given interface is already active: %s\n", if_string); + printk(KERN_ERR "batman-adv:Given interface is already active: %s\n", if_string); rcu_read_unlock(); goto end; @@ -162,20 +159,18 @@ static ssize_t proc_orig_interval_write(struct file *file, retval = strict_strtoul(interval_string, 10, &originator_interval_tmp); if (retval) { - debug_log(LOG_TYPE_WARN, "New originator interval invalid\n"); + printk(KERN_ERR "batman-adv:New originator interval invalid\n"); goto end; } if (originator_interval_tmp <= JITTER * 2) { - debug_log(LOG_TYPE_WARN, - "New originator interval too small: %i (min: %i)\n", - originator_interval_tmp, JITTER * 2); + printk(KERN_WARNING "batman-adv:New originator interval too small: %li (min: %i)\n", + originator_interval_tmp, JITTER * 2); goto end; } - debug_log(LOG_TYPE_NOTICE, - "Changing originator interval from: %i to: %i\n", - atomic_read(&originator_interval), originator_interval_tmp); + printk(KERN_INFO "batman-adv:Changing originator interval from: %i to: %li\n", + atomic_read(&originator_interval), originator_interval_tmp); atomic_set(&originator_interval, originator_interval_tmp); @@ -235,7 +230,7 @@ static int proc_originators_read(struct seq_file *seq, void *offset) addr_to_string(orig_str, orig_node->orig); addr_to_string(router_str, orig_node->router->addr); - seq_printf(seq, "%-17s (%3i) %17s [%10s]:", + seq_printf(seq, "%-17s (%3i) %17s [%10s]:", orig_str, orig_node->router->tq_avg, router_str, orig_node->router->if_incoming->dev); @@ -263,84 +258,6 @@ static int proc_originators_open(struct inode *inode, struct file *file) return single_open(file, proc_originators_read, NULL); } -static int proc_log_level_read(struct seq_file *seq, void *offset) -{ - - seq_printf(seq, "[x] %s (%d)\n", LOG_TYPE_CRIT_NAME, LOG_TYPE_CRIT); - seq_printf(seq, "[%c] %s (%d)\n", - (LOG_TYPE_WARN & log_level) ? 'x' : ' ', - LOG_TYPE_WARN_NAME, LOG_TYPE_WARN); - seq_printf(seq, "[%c] %s (%d)\n", - (LOG_TYPE_NOTICE & log_level) ? 'x' : ' ', - LOG_TYPE_NOTICE_NAME, LOG_TYPE_NOTICE); - seq_printf(seq, "[%c] %s (%d)\n", - (LOG_TYPE_BATMAN & log_level) ? 'x' : ' ', - LOG_TYPE_BATMAN_NAME, LOG_TYPE_BATMAN); - seq_printf(seq, "[%c] %s (%d)\n", - (LOG_TYPE_ROUTES & log_level) ? 'x' : ' ', - LOG_TYPE_ROUTES_NAME, LOG_TYPE_ROUTES); - return 0; -} - -static int proc_log_level_open(struct inode *inode, struct file *file) -{ - return single_open(file, proc_log_level_read, NULL); -} - -static ssize_t proc_log_level_write(struct file *instance, - const char __user *userbuffer, - size_t count, loff_t *data) -{ - char *log_level_string, *tokptr, *cp; - int finished, not_copied = 0; - unsigned long log_level_tmp = 0; - - log_level_string = kmalloc(count, GFP_KERNEL); - - if (!log_level_string) - return -ENOMEM; - - not_copied = copy_from_user(log_level_string, userbuffer, count); - log_level_string[count - not_copied - 1] = 0; - - if (strict_strtoul(log_level_string, 10, &log_level_tmp) < 0) { - /* was not a number, doing textual parsing */ - log_level_tmp = 0; - tokptr = log_level_string; - - for (cp = log_level_string, finished = 0; !finished; cp++) { - switch (*cp) { - case 0: - finished = 1; - case ' ': - case '\n': - case '\t': - *cp = 0; - /* compare */ - if (strcmp(tokptr, LOG_TYPE_WARN_NAME) == 0) - log_level_tmp |= LOG_TYPE_WARN; - if (strcmp(tokptr, LOG_TYPE_NOTICE_NAME) == 0) - log_level_tmp |= LOG_TYPE_NOTICE; - if (strcmp(tokptr, LOG_TYPE_BATMAN_NAME) == 0) - log_level_tmp |= LOG_TYPE_BATMAN; - if (strcmp(tokptr, LOG_TYPE_ROUTES_NAME) == 0) - log_level_tmp |= LOG_TYPE_ROUTES; - tokptr = cp + 1; - break; - default: - ; - } - } - } - - debug_log(LOG_TYPE_CRIT, "Changing log_level from: %i to: %i\n", - log_level, log_level_tmp); - log_level = log_level_tmp; - - kfree(log_level_string); - return count; -} - static int proc_transt_local_read(struct seq_file *seq, void *offset) { char *buf; @@ -412,7 +329,7 @@ static void proc_vis_insert_interface(const uint8_t *interface, bool primary) { /* Did we get an empty list? (then insert imediately) */ - if(*if_entry == NULL) { + if (*if_entry == NULL) { *if_entry = kmalloc(sizeof(struct vis_if_list), GFP_KERNEL); if (*if_entry == NULL) return; @@ -585,14 +502,14 @@ static ssize_t proc_vis_write(struct file *file, const char __user * buffer, vis_mode_string[count - not_copied - 1] = 0; if (strcmp(vis_mode_string, "client") == 0) { - debug_log(LOG_TYPE_NOTICE, "Setting VIS mode to client\n"); + printk(KERN_INFO "batman-adv:Setting VIS mode to client\n"); vis_set_mode(VIS_TYPE_CLIENT_UPDATE); } else if (strcmp(vis_mode_string, "server") == 0) { - debug_log(LOG_TYPE_NOTICE, "Setting VIS mode to server\n"); + printk(KERN_INFO "batman-adv:Setting VIS mode to server\n"); vis_set_mode(VIS_TYPE_SERVER_SYNC); } else - debug_log(LOG_TYPE_WARN, "Unknown VIS mode: %s\n", - vis_mode_string); + printk(KERN_ERR "batman-adv:Unknown VIS mode: %s\n", + vis_mode_string); kfree(vis_mode_string); return count; @@ -637,16 +554,16 @@ static ssize_t proc_vis_format_write(struct file *file, vis_format_string[count - not_copied - 1] = 0; if (strcmp(vis_format_string, VIS_FORMAT_DD_NAME) == 0) { - debug_log(LOG_TYPE_NOTICE, "Setting VIS output format to: %s\n", - VIS_FORMAT_DD_NAME); + printk(KERN_INFO "batman-adv:Setting VIS output format to: %s\n", + VIS_FORMAT_DD_NAME); vis_format = DOT_DRAW; } else if (strcmp(vis_format_string, VIS_FORMAT_JSON_NAME) == 0) { - debug_log(LOG_TYPE_NOTICE, "Setting VIS output format to: %s\n", - VIS_FORMAT_JSON_NAME); + printk(KERN_INFO "batman-adv:Setting VIS output format to: %s\n", + VIS_FORMAT_JSON_NAME); vis_format = JSON; } else - debug_log(LOG_TYPE_WARN, "Unknown VIS output format: %s\n", - vis_format_string); + printk(KERN_ERR "batman-adv:Unknown VIS output format: %s\n", + vis_format_string); kfree(vis_format_string); return count; @@ -677,16 +594,16 @@ static ssize_t proc_aggr_write(struct file *file, const char __user *buffer, strict_strtoul(aggr_string, 10, &aggregation_enabled_tmp); if ((aggregation_enabled_tmp != 0) && (aggregation_enabled_tmp != 1)) { - debug_log(LOG_TYPE_WARN, "Aggregation can only be enabled (1) or disabled (0), given value: %li\n", aggregation_enabled_tmp); + printk(KERN_ERR "batman-adv:Aggregation can only be enabled (1) or disabled (0), given value: %li\n", aggregation_enabled_tmp); goto end; } - debug_log(LOG_TYPE_NOTICE, "Changing aggregation from: %s (%i) to: %s (%li)\n", - (atomic_read(&aggregation_enabled) == 1 ? - "enabled" : "disabled"), - atomic_read(&aggregation_enabled), - (aggregation_enabled_tmp == 1 ? "enabled" : "disabled"), - aggregation_enabled_tmp); + printk(KERN_INFO "batman-adv:Changing aggregation from: %s (%i) to: %s (%li)\n", + (atomic_read(&aggregation_enabled) == 1 ? + "enabled" : "disabled"), + atomic_read(&aggregation_enabled), + (aggregation_enabled_tmp == 1 ? "enabled" : "disabled"), + aggregation_enabled_tmp); atomic_set(&aggregation_enabled, (unsigned)aggregation_enabled_tmp); end: @@ -760,15 +677,6 @@ static const struct file_operations proc_transt_global_fops = { .release = single_release, }; -static const struct file_operations proc_log_level_fops = { - .owner = THIS_MODULE, - .open = proc_log_level_open, - .read = seq_read, - .write = proc_log_level_write, - .llseek = seq_lseek, - .release = single_release, -}; - static const struct file_operations proc_interfaces_fops = { .owner = THIS_MODULE, .open = proc_interfaces_open, @@ -795,12 +703,6 @@ void cleanup_procfs(void) if (proc_transt_local_file) remove_proc_entry(PROC_FILE_TRANST_LOCAL, proc_batman_dir); - if (proc_log_file) - remove_proc_entry(PROC_FILE_LOG, proc_batman_dir); - - if (proc_log_level_file) - remove_proc_entry(PROC_FILE_LOG_LEVEL, proc_batman_dir); - if (proc_originators_file) remove_proc_entry(PROC_FILE_ORIGINATORS, proc_batman_dir); @@ -862,17 +764,6 @@ int setup_procfs(void) return -EFAULT; } - proc_log_level_file = create_proc_entry(PROC_FILE_LOG_LEVEL, - S_IWUSR | S_IRUGO, - proc_batman_dir); - if (proc_log_level_file) { - proc_log_level_file->proc_fops = &proc_log_level_fops; - } else { - printk(KERN_ERR "batman-adv: Registering the '/proc/net/%s/%s' file failed\n", PROC_ROOT_DIR, PROC_FILE_LOG_LEVEL); - cleanup_procfs(); - return -EFAULT; - } - proc_originators_file = create_proc_entry(PROC_FILE_ORIGINATORS, S_IRUGO, proc_batman_dir); if (proc_originators_file) { @@ -883,16 +774,6 @@ int setup_procfs(void) return -EFAULT; } - proc_log_file = create_proc_entry(PROC_FILE_LOG, - S_IRUGO, proc_batman_dir); - if (proc_log_file) { - proc_log_file->proc_fops = &proc_log_operations; - } else { - printk(KERN_ERR "batman-adv: Registering the '/proc/net/%s/%s' file failed\n", PROC_FILE_LOG, PROC_FILE_GATEWAYS); - cleanup_procfs(); - return -EFAULT; - } - proc_transt_local_file = create_proc_entry(PROC_FILE_TRANST_LOCAL, S_IRUGO, proc_batman_dir); if (proc_transt_local_file) { diff --git a/drivers/staging/batman-adv/routing.c b/drivers/staging/batman-adv/routing.c index 4a14c363ac2b..e8d712788dad 100644 --- a/drivers/staging/batman-adv/routing.c +++ b/drivers/staging/batman-adv/routing.c @@ -19,227 +19,122 @@ * */ - - - - #include "main.h" #include "routing.h" -#include "log.h" #include "send.h" +#include "hash.h" #include "soft-interface.h" #include "hard-interface.h" #include "device.h" #include "translation-table.h" +#include "originator.h" #include "types.h" -#include "hash.h" #include "ring_buffer.h" #include "vis.h" #include "aggregation.h" #include "compat.h" - - DECLARE_WAIT_QUEUE_HEAD(thread_wait); -static DECLARE_DELAYED_WORK(purge_orig_wq, purge_orig); static atomic_t data_ready_cond; atomic_t exit_cond; - -static void start_purge_timer(void) -{ - queue_delayed_work(bat_event_workqueue, &purge_orig_wq, 1 * HZ); -} - -int originator_init(void) +void slide_own_bcast_window(struct batman_if *batman_if) { - if (orig_hash) - return 1; + struct hash_it_t *hashit = NULL; + struct orig_node *orig_node; + TYPE_OF_WORD *word; spin_lock(&orig_hash_lock); - orig_hash = hash_new(128, compare_orig, choose_orig); - - if (!orig_hash) - goto err; - spin_unlock(&orig_hash_lock); - start_purge_timer(); - return 1; - -err: - spin_unlock(&orig_hash_lock); - return 0; -} - -void originator_free(void) -{ - if (!orig_hash) - return; + while (NULL != (hashit = hash_iterate(orig_hash, hashit))) { + orig_node = hashit->bucket->data; + word = &(orig_node->bcast_own[batman_if->if_num * NUM_WORDS]); - cancel_delayed_work_sync(&purge_orig_wq); + bit_get_packet(word, 1, 0); + orig_node->bcast_own_sum[batman_if->if_num] = + bit_packet_count(word); + } - spin_lock(&orig_hash_lock); - hash_delete(orig_hash, free_orig_node); - orig_hash = NULL; spin_unlock(&orig_hash_lock); } -static struct neigh_node *create_neighbor(struct orig_node *orig_node, struct orig_node *orig_neigh_node, uint8_t *neigh, struct batman_if *if_incoming) +static void update_HNA(struct orig_node *orig_node, + unsigned char *hna_buff, int hna_buff_len) { - struct neigh_node *neigh_node; - - debug_log(LOG_TYPE_BATMAN, "Creating new last-hop neighbour of originator\n"); + if ((hna_buff_len != orig_node->hna_buff_len) || + ((hna_buff_len > 0) && + (orig_node->hna_buff_len > 0) && + (memcmp(orig_node->hna_buff, hna_buff, hna_buff_len) != 0))) { - neigh_node = kmalloc(sizeof(struct neigh_node), GFP_ATOMIC); - memset(neigh_node, 0, sizeof(struct neigh_node)); - INIT_LIST_HEAD(&neigh_node->list); + if (orig_node->hna_buff_len > 0) + hna_global_del_orig(orig_node, + "originator changed hna"); - memcpy(neigh_node->addr, neigh, ETH_ALEN); - neigh_node->orig_node = orig_neigh_node; - neigh_node->if_incoming = if_incoming; - - list_add_tail(&neigh_node->list, &orig_node->neigh_list); - return neigh_node; -} - -void free_orig_node(void *data) -{ - struct list_head *list_pos, *list_pos_tmp; - struct neigh_node *neigh_node; - struct orig_node *orig_node = (struct orig_node *)data; - - /* for all neighbours towards this originator ... */ - list_for_each_safe(list_pos, list_pos_tmp, &orig_node->neigh_list) { - neigh_node = list_entry(list_pos, struct neigh_node, list); - - list_del(list_pos); - kfree(neigh_node); + if ((hna_buff_len > 0) && (hna_buff != NULL)) + hna_global_add_orig(orig_node, hna_buff, hna_buff_len); } - - hna_global_del_orig(orig_node, "originator timed out"); - - kfree(orig_node->bcast_own); - kfree(orig_node->bcast_own_sum); - kfree(orig_node); } -/* this function finds or creates an originator entry for the given address if it does not exits */ -static struct orig_node *get_orig_node(uint8_t *addr) +static void update_route(struct orig_node *orig_node, + struct neigh_node *neigh_node, + unsigned char *hna_buff, int hna_buff_len) { - struct orig_node *orig_node; - struct hashtable_t *swaphash; - char orig_str[ETH_STR_LEN]; - - orig_node = ((struct orig_node *)hash_find(orig_hash, addr)); - - if (orig_node != NULL) - return orig_node; - - addr_to_string(orig_str, addr); - debug_log(LOG_TYPE_BATMAN, "Creating new originator: %s \n", orig_str); - - orig_node = kmalloc(sizeof(struct orig_node), GFP_ATOMIC); - memset(orig_node, 0, sizeof(struct orig_node)); - INIT_LIST_HEAD(&orig_node->neigh_list); + char orig_str[ETH_STR_LEN], neigh_str[ETH_STR_LEN]; + char router_str[ETH_STR_LEN]; - memcpy(orig_node->orig, addr, ETH_ALEN); - orig_node->router = NULL; - orig_node->batman_if = NULL; - orig_node->hna_buff = NULL; + addr_to_string(orig_str, orig_node->orig); - orig_node->bcast_own = kmalloc(num_ifs * sizeof(TYPE_OF_WORD) * NUM_WORDS, GFP_ATOMIC); - memset(orig_node->bcast_own, 0, num_ifs * sizeof(TYPE_OF_WORD) * NUM_WORDS); + /* route deleted */ + if ((orig_node->router != NULL) && (neigh_node == NULL)) { - orig_node->bcast_own_sum = kmalloc(num_ifs * sizeof(uint8_t), GFP_ATOMIC); - memset(orig_node->bcast_own_sum, 0, num_ifs * sizeof(uint8_t)); + bat_dbg(DBG_ROUTES, "Deleting route towards: %s\n", + orig_str); + hna_global_del_orig(orig_node, "originator timed out"); - hash_add(orig_hash, orig_node); + /* route added */ + } else if ((orig_node->router == NULL) && (neigh_node != NULL)) { - if (orig_hash->elements * 4 > orig_hash->size) { - swaphash = hash_resize(orig_hash, orig_hash->size * 2); + addr_to_string(neigh_str, neigh_node->addr); + bat_dbg(DBG_ROUTES, + "Adding route towards: %s (via %s)\n", + orig_str, neigh_str); + hna_global_add_orig(orig_node, hna_buff, hna_buff_len); - if (swaphash == NULL) - debug_log(LOG_TYPE_CRIT, "Couldn't resize orig hash table \n"); - else - orig_hash = swaphash; + /* route changed */ + } else { + addr_to_string(neigh_str, neigh_node->addr); + addr_to_string(router_str, orig_node->router->addr); + bat_dbg(DBG_ROUTES, "Changing route towards: %s (now via %s - was via %s)\n", orig_str, neigh_str, router_str); } - return orig_node; -} - -void slide_own_bcast_window(struct batman_if *batman_if) -{ - struct hash_it_t *hashit = NULL; - struct orig_node *orig_node; - - spin_lock(&orig_hash_lock); - - while (NULL != (hashit = hash_iterate(orig_hash, hashit))) { - orig_node = hashit->bucket->data; - - bit_get_packet((TYPE_OF_WORD *)&(orig_node->bcast_own[batman_if->if_num * NUM_WORDS]), 1, 0); - orig_node->bcast_own_sum[batman_if->if_num] = bit_packet_count((TYPE_OF_WORD *)&(orig_node->bcast_own[batman_if->if_num * NUM_WORDS])); - } + if (neigh_node != NULL) + orig_node->batman_if = neigh_node->if_incoming; + else + orig_node->batman_if = NULL; - spin_unlock(&orig_hash_lock); + orig_node->router = neigh_node; } -static void update_routes(struct orig_node *orig_node, struct neigh_node *neigh_node, unsigned char *hna_buff, int hna_buff_len) + +void update_routes(struct orig_node *orig_node, + struct neigh_node *neigh_node, + unsigned char *hna_buff, int hna_buff_len) { - char orig_str[ETH_STR_LEN], neigh_str[ETH_STR_LEN], router_str[ETH_STR_LEN]; if (orig_node == NULL) return; - if (orig_node->router != neigh_node) { - addr_to_string(orig_str, orig_node->orig); - - /* route deleted */ - if ((orig_node->router != NULL) && (neigh_node == NULL)) { - - debug_log(LOG_TYPE_ROUTES, "Deleting route towards: %s\n", orig_str); - hna_global_del_orig(orig_node, "originator timed out"); - - /* route added */ - } else if ((orig_node->router == NULL) && (neigh_node != NULL)) { - - addr_to_string(neigh_str, neigh_node->addr); - debug_log(LOG_TYPE_ROUTES, "Adding route towards: %s (via %s)\n", orig_str, neigh_str); - hna_global_add_orig(orig_node, hna_buff, hna_buff_len); - - /* route changed */ - } else { - - addr_to_string(neigh_str, neigh_node->addr); - addr_to_string(router_str, orig_node->router->addr); - debug_log(LOG_TYPE_ROUTES, "Changing route towards: %s (now via %s - was via %s)\n", orig_str, neigh_str, router_str); - - } - - if (neigh_node != NULL) - orig_node->batman_if = neigh_node->if_incoming; - else - orig_node->batman_if = NULL; - - orig_node->router = neigh_node; - + if (orig_node->router != neigh_node) + update_route(orig_node, neigh_node, hna_buff, hna_buff_len); /* may be just HNA changed */ - } else { - - if ((hna_buff_len != orig_node->hna_buff_len) || ((hna_buff_len > 0) && (orig_node->hna_buff_len > 0) && (memcmp(orig_node->hna_buff, hna_buff, hna_buff_len) != 0))) { - - if (orig_node->hna_buff_len > 0) - hna_global_del_orig(orig_node, "originator changed hna"); - - if ((hna_buff_len > 0) && (hna_buff != NULL)) - hna_global_add_orig(orig_node, hna_buff, hna_buff_len); - - } - - } + else + update_HNA(orig_node, hna_buff, hna_buff_len); } -static int isBidirectionalNeigh(struct orig_node *orig_node, struct orig_node *orig_neigh_node, struct batman_packet *batman_packet, struct batman_if *if_incoming) +static int isBidirectionalNeigh(struct orig_node *orig_node, + struct orig_node *orig_neigh_node, + struct batman_packet *batman_packet, + struct batman_if *if_incoming) { struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL; char orig_str[ETH_STR_LEN], neigh_str[ETH_STR_LEN]; @@ -249,74 +144,109 @@ static int isBidirectionalNeigh(struct orig_node *orig_node, struct orig_node *o addr_to_string(neigh_str, orig_neigh_node->orig); if (orig_node == orig_neigh_node) { - list_for_each_entry(tmp_neigh_node, &orig_node->neigh_list, list) { + list_for_each_entry(tmp_neigh_node, + &orig_node->neigh_list, + list) { - if (compare_orig(tmp_neigh_node->addr, orig_neigh_node->orig) && (tmp_neigh_node->if_incoming == if_incoming)) + if (compare_orig(tmp_neigh_node->addr, + orig_neigh_node->orig) && + (tmp_neigh_node->if_incoming == if_incoming)) neigh_node = tmp_neigh_node; } if (neigh_node == NULL) - neigh_node = create_neighbor(orig_node, orig_neigh_node, orig_neigh_node->orig, if_incoming); + neigh_node = create_neighbor(orig_node, + orig_neigh_node, + orig_neigh_node->orig, + if_incoming); neigh_node->last_valid = jiffies; } else { /* find packet count of corresponding one hop neighbor */ - list_for_each_entry(tmp_neigh_node, &orig_neigh_node->neigh_list, list) { + list_for_each_entry(tmp_neigh_node, + &orig_neigh_node->neigh_list, list) { - if (compare_orig(tmp_neigh_node->addr, orig_neigh_node->orig) && (tmp_neigh_node->if_incoming == if_incoming)) + if (compare_orig(tmp_neigh_node->addr, + orig_neigh_node->orig) && + (tmp_neigh_node->if_incoming == if_incoming)) neigh_node = tmp_neigh_node; } if (neigh_node == NULL) - neigh_node = create_neighbor(orig_neigh_node, orig_neigh_node, orig_neigh_node->orig, if_incoming); + neigh_node = create_neighbor(orig_neigh_node, + orig_neigh_node, + orig_neigh_node->orig, + if_incoming); } orig_node->last_valid = jiffies; /* pay attention to not get a value bigger than 100 % */ - total_count = (orig_neigh_node->bcast_own_sum[if_incoming->if_num] > neigh_node->real_packet_count ? neigh_node->real_packet_count : orig_neigh_node->bcast_own_sum[if_incoming->if_num]); + total_count = (orig_neigh_node->bcast_own_sum[if_incoming->if_num] > + neigh_node->real_packet_count ? + neigh_node->real_packet_count : + orig_neigh_node->bcast_own_sum[if_incoming->if_num]); /* if we have too few packets (too less data) we set tq_own to zero */ /* if we receive too few packets it is not considered bidirectional */ - if ((total_count < TQ_LOCAL_BIDRECT_SEND_MINIMUM) || (neigh_node->real_packet_count < TQ_LOCAL_BIDRECT_RECV_MINIMUM)) + if ((total_count < TQ_LOCAL_BIDRECT_SEND_MINIMUM) || + (neigh_node->real_packet_count < TQ_LOCAL_BIDRECT_RECV_MINIMUM)) orig_neigh_node->tq_own = 0; else - /* neigh_node->real_packet_count is never zero as we only purge old information when getting new information */ - orig_neigh_node->tq_own = (TQ_MAX_VALUE * total_count) / neigh_node->real_packet_count; + /* neigh_node->real_packet_count is never zero as we + * only purge old information when getting new + * information */ + orig_neigh_node->tq_own = (TQ_MAX_VALUE * total_count) / + neigh_node->real_packet_count; /* - * 1 - ((1-x) ** 3), normalized to TQ_MAX_VALUE - * this does affect the nearly-symmetric links only a little, - * but punishes asymmetric links more. - * this will give a value between 0 and TQ_MAX_VALUE + * 1 - ((1-x) ** 3), normalized to TQ_MAX_VALUE this does + * affect the nearly-symmetric links only a little, but + * punishes asymmetric links more. This will give a value + * between 0 and TQ_MAX_VALUE */ - orig_neigh_node->tq_asym_penalty = TQ_MAX_VALUE - (TQ_MAX_VALUE * - (TQ_LOCAL_WINDOW_SIZE - neigh_node->real_packet_count) * - (TQ_LOCAL_WINDOW_SIZE - neigh_node->real_packet_count) * - (TQ_LOCAL_WINDOW_SIZE - neigh_node->real_packet_count)) / - (TQ_LOCAL_WINDOW_SIZE * TQ_LOCAL_WINDOW_SIZE * TQ_LOCAL_WINDOW_SIZE); - - batman_packet->tq = ((batman_packet->tq * orig_neigh_node->tq_own * orig_neigh_node->tq_asym_penalty) / (TQ_MAX_VALUE * TQ_MAX_VALUE)); - - debug_log(LOG_TYPE_BATMAN, "bidirectional: orig = %-15s neigh = %-15s => own_bcast = %2i, real recv = %2i, local tq: %3i, asym_penalty: %3i, total tq: %3i \n", - orig_str, neigh_str, total_count, neigh_node->real_packet_count, orig_neigh_node->tq_own, orig_neigh_node->tq_asym_penalty, batman_packet->tq); - - /* if link has the minimum required transmission quality consider it bidirectional */ + orig_neigh_node->tq_asym_penalty = + TQ_MAX_VALUE - + (TQ_MAX_VALUE * + (TQ_LOCAL_WINDOW_SIZE - neigh_node->real_packet_count) * + (TQ_LOCAL_WINDOW_SIZE - neigh_node->real_packet_count) * + (TQ_LOCAL_WINDOW_SIZE - neigh_node->real_packet_count)) / + (TQ_LOCAL_WINDOW_SIZE * + TQ_LOCAL_WINDOW_SIZE * + TQ_LOCAL_WINDOW_SIZE); + + batman_packet->tq = ((batman_packet->tq * + orig_neigh_node->tq_own * + orig_neigh_node->tq_asym_penalty) / + (TQ_MAX_VALUE * TQ_MAX_VALUE)); + + bat_dbg(DBG_BATMAN, "bidirectional: orig = %-15s neigh = %-15s => own_bcast = %2i, real recv = %2i, local tq: %3i, asym_penalty: %3i, total tq: %3i \n", + orig_str, neigh_str, total_count, + neigh_node->real_packet_count, orig_neigh_node->tq_own, + orig_neigh_node->tq_asym_penalty, batman_packet->tq); + + /* if link has the minimum required transmission quality + * consider it bidirectional */ if (batman_packet->tq >= TQ_TOTAL_BIDRECT_LIMIT) return 1; return 0; } -static void update_orig(struct orig_node *orig_node, struct ethhdr *ethhdr, struct batman_packet *batman_packet, struct batman_if *if_incoming, unsigned char *hna_buff, int hna_buff_len, char is_duplicate) +static void update_orig(struct orig_node *orig_node, struct ethhdr *ethhdr, + struct batman_packet *batman_packet, + struct batman_if *if_incoming, + unsigned char *hna_buff, int hna_buff_len, + char is_duplicate) { struct neigh_node *neigh_node = NULL, *tmp_neigh_node = NULL; int tmp_hna_buff_len; - debug_log(LOG_TYPE_BATMAN, "update_originator(): Searching and updating originator entry of received packet \n"); + bat_dbg(DBG_BATMAN, "update_originator(): Searching and updating originator entry of received packet \n"); list_for_each_entry(tmp_neigh_node, &orig_node->neigh_list, list) { - if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) && (tmp_neigh_node->if_incoming == if_incoming)) { + if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) && + (tmp_neigh_node->if_incoming == if_incoming)) { neigh_node = tmp_neigh_node; continue; } @@ -324,19 +254,26 @@ static void update_orig(struct orig_node *orig_node, struct ethhdr *ethhdr, stru if (is_duplicate) continue; - ring_buffer_set(tmp_neigh_node->tq_recv, &tmp_neigh_node->tq_index, 0); - tmp_neigh_node->tq_avg = ring_buffer_avg(tmp_neigh_node->tq_recv); + ring_buffer_set(tmp_neigh_node->tq_recv, + &tmp_neigh_node->tq_index, 0); + tmp_neigh_node->tq_avg = + ring_buffer_avg(tmp_neigh_node->tq_recv); } if (neigh_node == NULL) - neigh_node = create_neighbor(orig_node, get_orig_node(ethhdr->h_source), ethhdr->h_source, if_incoming); + neigh_node = create_neighbor(orig_node, + get_orig_node(ethhdr->h_source), + ethhdr->h_source, if_incoming); else - debug_log(LOG_TYPE_BATMAN, "Updating existing last-hop neighbour of originator\n"); + bat_dbg(DBG_BATMAN, + "Updating existing last-hop neighbour of originator\n"); orig_node->flags = batman_packet->flags; neigh_node->last_valid = jiffies; - ring_buffer_set(neigh_node->tq_recv, &neigh_node->tq_index, batman_packet->tq); + ring_buffer_set(neigh_node->tq_recv, + &neigh_node->tq_index, + batman_packet->tq); neigh_node->tq_avg = ring_buffer_avg(neigh_node->tq_recv); if (!is_duplicate) { @@ -344,9 +281,11 @@ static void update_orig(struct orig_node *orig_node, struct ethhdr *ethhdr, stru neigh_node->last_ttl = batman_packet->ttl; } - tmp_hna_buff_len = (hna_buff_len > batman_packet->num_hna * ETH_ALEN ? batman_packet->num_hna * ETH_ALEN : hna_buff_len); + tmp_hna_buff_len = (hna_buff_len > batman_packet->num_hna * ETH_ALEN ? + batman_packet->num_hna * ETH_ALEN : hna_buff_len); - /* if this neighbor already is our next hop there is nothing to change */ + /* if this neighbor already is our next hop there is nothing + * to change */ if (orig_node->router == neigh_node) goto update_hna; @@ -355,11 +294,12 @@ static void update_orig(struct orig_node *orig_node, struct ethhdr *ethhdr, stru (orig_node->router->tq_avg > neigh_node->tq_avg)) goto update_hna; - /* if the TQ is the same and the link not more symetric we won't consider it either */ + /* if the TQ is the same and the link not more symetric we + * won't consider it either */ if ((orig_node->router) && ((neigh_node->tq_avg == orig_node->router->tq_avg) && - (orig_node->router->orig_node->bcast_own_sum[if_incoming->if_num] >= - neigh_node->orig_node->bcast_own_sum[if_incoming->if_num]))) + (orig_node->router->orig_node->bcast_own_sum[if_incoming->if_num] + >= neigh_node->orig_node->bcast_own_sum[if_incoming->if_num]))) goto update_hna; update_routes(orig_node, neigh_node, hna_buff, tmp_hna_buff_len); @@ -370,57 +310,73 @@ update_hna: return; } -static char count_real_packets(struct ethhdr *ethhdr, struct batman_packet *batman_packet, struct batman_if *if_incoming) +static char count_real_packets(struct ethhdr *ethhdr, + struct batman_packet *batman_packet, + struct batman_if *if_incoming) { struct orig_node *orig_node; struct neigh_node *tmp_neigh_node; char is_duplicate = 0; - + uint16_t seq_diff; orig_node = get_orig_node(batman_packet->orig); if (orig_node == NULL) return 0; - list_for_each_entry(tmp_neigh_node, &orig_node->neigh_list, list) { if (!is_duplicate) - is_duplicate = get_bit_status(tmp_neigh_node->real_bits, orig_node->last_real_seqno, batman_packet->seqno); - - if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) && (tmp_neigh_node->if_incoming == if_incoming)) - bit_get_packet(tmp_neigh_node->real_bits, batman_packet->seqno - orig_node->last_real_seqno, 1); + is_duplicate = + get_bit_status(tmp_neigh_node->real_bits, + orig_node->last_real_seqno, + batman_packet->seqno); + seq_diff = batman_packet->seqno - orig_node->last_real_seqno; + if (compare_orig(tmp_neigh_node->addr, ethhdr->h_source) && + (tmp_neigh_node->if_incoming == if_incoming)) + bit_get_packet(tmp_neigh_node->real_bits, seq_diff, 1); else - bit_get_packet(tmp_neigh_node->real_bits, batman_packet->seqno - orig_node->last_real_seqno, 0); + bit_get_packet(tmp_neigh_node->real_bits, seq_diff, 0); - tmp_neigh_node->real_packet_count = bit_packet_count(tmp_neigh_node->real_bits); + tmp_neigh_node->real_packet_count = + bit_packet_count(tmp_neigh_node->real_bits); } if (!is_duplicate) { - debug_log(LOG_TYPE_BATMAN, "updating last_seqno: old %d, new %d \n", orig_node->last_real_seqno, batman_packet->seqno); + bat_dbg(DBG_BATMAN, "updating last_seqno: old %d, new %d \n", + orig_node->last_real_seqno, batman_packet->seqno); orig_node->last_real_seqno = batman_packet->seqno; } return is_duplicate; } -void receive_bat_packet(struct ethhdr *ethhdr, struct batman_packet *batman_packet, unsigned char *hna_buff, int hna_buff_len, struct batman_if *if_incoming) +void receive_bat_packet(struct ethhdr *ethhdr, + struct batman_packet *batman_packet, + unsigned char *hna_buff, + int hna_buff_len, + struct batman_if *if_incoming) { struct batman_if *batman_if; struct orig_node *orig_neigh_node, *orig_node; - char orig_str[ETH_STR_LEN], prev_sender_str[ETH_STR_LEN], neigh_str[ETH_STR_LEN]; + char orig_str[ETH_STR_LEN], prev_sender_str[ETH_STR_LEN]; + char neigh_str[ETH_STR_LEN]; char has_directlink_flag; - char is_my_addr = 0, is_my_orig = 0, is_my_oldorig = 0, is_broadcast = 0, is_bidirectional, is_single_hop_neigh, is_duplicate; + char is_my_addr = 0, is_my_orig = 0, is_my_oldorig = 0; + char is_broadcast = 0, is_bidirectional, is_single_hop_neigh; + char is_duplicate; unsigned short if_incoming_seqno; - /* Silently drop when the batman packet is actually not a correct packet. + /* Silently drop when the batman packet is actually not a + * correct packet. * * This might happen if a packet is padded (e.g. Ethernet has a * minimum frame length of 64 byte) and the aggregation interprets * it as an additional length. * - * TODO: A more sane solution would be to have a bit in the batman_packet - * to detect whether the packet is the last packet in an aggregation. - * Here we expect that the padding is always zero (or not 0x01) + * TODO: A more sane solution would be to have a bit in the + * batman_packet to detect whether the packet is the last + * packet in an aggregation. Here we expect that the padding + * is always zero (or not 0x01) */ if (batman_packet->packet_type != BAT_PACKET) return; @@ -434,21 +390,29 @@ void receive_bat_packet(struct ethhdr *ethhdr, struct batman_packet *batman_pack has_directlink_flag = (batman_packet->flags & DIRECTLINK ? 1 : 0); - is_single_hop_neigh = (compare_orig(ethhdr->h_source, batman_packet->orig) ? 1 : 0); + is_single_hop_neigh = (compare_orig(ethhdr->h_source, + batman_packet->orig) ? 1 : 0); - debug_log(LOG_TYPE_BATMAN, "Received BATMAN packet via NB: %s, IF: %s [%s] (from OG: %s, via prev OG: %s, seqno %d, tq %d, TTL %d, V %d, IDF %d) \n", neigh_str, if_incoming->dev, if_incoming->addr_str, orig_str, prev_sender_str, batman_packet->seqno, batman_packet->tq, batman_packet->ttl, batman_packet->version, has_directlink_flag); + bat_dbg(DBG_BATMAN, "Received BATMAN packet via NB: %s, IF: %s [%s] (from OG: %s, via prev OG: %s, seqno %d, tq %d, TTL %d, V %d, IDF %d) \n", + neigh_str, if_incoming->dev, if_incoming->addr_str, + orig_str, prev_sender_str, batman_packet->seqno, + batman_packet->tq, batman_packet->ttl, batman_packet->version, + has_directlink_flag); list_for_each_entry_rcu(batman_if, &if_list, list) { if (batman_if->if_active != IF_ACTIVE) continue; - if (compare_orig(ethhdr->h_source, batman_if->net_dev->dev_addr)) + if (compare_orig(ethhdr->h_source, + batman_if->net_dev->dev_addr)) is_my_addr = 1; - if (compare_orig(batman_packet->orig, batman_if->net_dev->dev_addr)) + if (compare_orig(batman_packet->orig, + batman_if->net_dev->dev_addr)) is_my_orig = 1; - if (compare_orig(batman_packet->prev_sender, batman_if->net_dev->dev_addr)) + if (compare_orig(batman_packet->prev_sender, + batman_if->net_dev->dev_addr)) is_my_oldorig = 1; if (compare_orig(ethhdr->h_source, broadcastAddr)) @@ -456,44 +420,58 @@ void receive_bat_packet(struct ethhdr *ethhdr, struct batman_packet *batman_pack } if (batman_packet->version != COMPAT_VERSION) { - debug_log(LOG_TYPE_BATMAN, "Drop packet: incompatible batman version (%i) \n", batman_packet->version); + bat_dbg(DBG_BATMAN, + "Drop packet: incompatible batman version (%i)\n", + batman_packet->version); return; } if (is_my_addr) { - debug_log(LOG_TYPE_BATMAN, "Drop packet: received my own broadcast (sender: %s) \n", neigh_str); + bat_dbg(DBG_BATMAN, + "Drop packet: received my own broadcast (sender: %s)\n", + neigh_str); return; } if (is_broadcast) { - debug_log(LOG_TYPE_BATMAN, "Drop packet: ignoring all packets with broadcast source addr (sender: %s) \n", neigh_str); + bat_dbg(DBG_BATMAN, "Drop packet: ignoring all packets with broadcast source addr (sender: %s) \n", neigh_str); return; } if (is_my_orig) { + TYPE_OF_WORD *word; + int offset; + orig_neigh_node = get_orig_node(ethhdr->h_source); - /* neighbour has to indicate direct link and it has to come via the corresponding interface */ - /* if received seqno equals last send seqno save new seqno for bidirectional check */ - if (has_directlink_flag && compare_orig(if_incoming->net_dev->dev_addr, batman_packet->orig) && - (batman_packet->seqno - if_incoming_seqno + 2 == 0)) { - bit_mark((TYPE_OF_WORD *)&(orig_neigh_node->bcast_own[if_incoming->if_num * NUM_WORDS]), 0); - orig_neigh_node->bcast_own_sum[if_incoming->if_num] = bit_packet_count((TYPE_OF_WORD *)&(orig_neigh_node->bcast_own[if_incoming->if_num * NUM_WORDS])); + /* neighbour has to indicate direct link and it has to + * come via the corresponding interface */ + /* if received seqno equals last send seqno save new + * seqno for bidirectional check */ + if (has_directlink_flag && + compare_orig(if_incoming->net_dev->dev_addr, + batman_packet->orig) && + (batman_packet->seqno - if_incoming_seqno + 2 == 0)) { + offset = if_incoming->if_num * NUM_WORDS; + word = &(orig_neigh_node->bcast_own[offset]); + bit_mark(word, 0); + orig_neigh_node->bcast_own_sum[if_incoming->if_num] = + bit_packet_count(word); } - debug_log(LOG_TYPE_BATMAN, "Drop packet: originator packet from myself (via neighbour) \n"); + bat_dbg(DBG_BATMAN, "Drop packet: originator packet from myself (via neighbour) \n"); return; } if (batman_packet->tq == 0) { count_real_packets(ethhdr, batman_packet, if_incoming); - debug_log(LOG_TYPE_BATMAN, "Drop packet: originator packet with tq equal 0 \n"); + bat_dbg(DBG_BATMAN, "Drop packet: originator packet with tq equal 0 \n"); return; } if (is_my_oldorig) { - debug_log(LOG_TYPE_BATMAN, "Drop packet: ignoring all rebroadcast echos (sender: %s) \n", neigh_str); + bat_dbg(DBG_BATMAN, "Drop packet: ignoring all rebroadcast echos (sender: %s) \n", neigh_str); return; } @@ -504,121 +482,76 @@ void receive_bat_packet(struct ethhdr *ethhdr, struct batman_packet *batman_pack return; /* avoid temporary routing loops */ - if ((orig_node->router) && (orig_node->router->orig_node->router) && - (compare_orig(orig_node->router->addr, batman_packet->prev_sender)) && + if ((orig_node->router) && + (orig_node->router->orig_node->router) && + (compare_orig(orig_node->router->addr, + batman_packet->prev_sender)) && !(compare_orig(batman_packet->orig, batman_packet->prev_sender)) && - (compare_orig(orig_node->router->addr, orig_node->router->orig_node->router->addr))) { - debug_log(LOG_TYPE_BATMAN, "Drop packet: ignoring all rebroadcast packets that may make me loop (sender: %s) \n", neigh_str); + (compare_orig(orig_node->router->addr, + orig_node->router->orig_node->router->addr))) { + bat_dbg(DBG_BATMAN, "Drop packet: ignoring all rebroadcast packets that may make me loop (sender: %s) \n", neigh_str); return; } - /* if sender is a direct neighbor the sender mac equals originator mac */ - orig_neigh_node = (is_single_hop_neigh ? orig_node : get_orig_node(ethhdr->h_source)); + /* if sender is a direct neighbor the sender mac equals + * originator mac */ + orig_neigh_node = (is_single_hop_neigh ? + orig_node : get_orig_node(ethhdr->h_source)); if (orig_neigh_node == NULL) return; - /* drop packet if sender is not a direct neighbor and if we don't route towards it */ - if (!is_single_hop_neigh && (orig_neigh_node->router == NULL)) { - debug_log(LOG_TYPE_BATMAN, "Drop packet: OGM via unknown neighbor! \n"); + /* drop packet if sender is not a direct neighbor and if we + * don't route towards it */ + if (!is_single_hop_neigh && + (orig_neigh_node->router == NULL)) { + bat_dbg(DBG_BATMAN, "Drop packet: OGM via unknown neighbor!\n"); return; } - is_bidirectional = isBidirectionalNeigh(orig_node, orig_neigh_node, batman_packet, if_incoming); + is_bidirectional = isBidirectionalNeigh(orig_node, orig_neigh_node, + batman_packet, if_incoming); - /* update ranking if it is not a duplicate or has the same seqno and similar ttl as the non-duplicate */ - if (is_bidirectional && (!is_duplicate || - ((orig_node->last_real_seqno == batman_packet->seqno) && - (orig_node->last_ttl - 3 <= batman_packet->ttl)))) - update_orig(orig_node, ethhdr, batman_packet, if_incoming, hna_buff, hna_buff_len, is_duplicate); + /* update ranking if it is not a duplicate or has the same + * seqno and similar ttl as the non-duplicate */ + if (is_bidirectional && + (!is_duplicate || + ((orig_node->last_real_seqno == batman_packet->seqno) && + (orig_node->last_ttl - 3 <= batman_packet->ttl)))) + update_orig(orig_node, ethhdr, batman_packet, + if_incoming, hna_buff, hna_buff_len, is_duplicate); /* is single hop (direct) neighbour */ if (is_single_hop_neigh) { /* mark direct link on incoming interface */ - schedule_forward_packet(orig_node, ethhdr, batman_packet, 1, hna_buff_len, if_incoming); + schedule_forward_packet(orig_node, ethhdr, batman_packet, + 1, hna_buff_len, if_incoming); - debug_log(LOG_TYPE_BATMAN, "Forwarding packet: rebroadcast neighbour packet with direct link flag \n"); + bat_dbg(DBG_BATMAN, "Forwarding packet: rebroadcast neighbour packet with direct link flag\n"); return; } /* multihop originator */ if (!is_bidirectional) { - debug_log(LOG_TYPE_BATMAN, "Drop packet: not received via bidirectional link\n"); + bat_dbg(DBG_BATMAN, + "Drop packet: not received via bidirectional link\n"); return; } if (is_duplicate) { - debug_log(LOG_TYPE_BATMAN, "Drop packet: duplicate packet received\n"); + bat_dbg(DBG_BATMAN, "Drop packet: duplicate packet received\n"); return; } - debug_log(LOG_TYPE_BATMAN, "Forwarding packet: rebroadcast originator packet \n"); - schedule_forward_packet(orig_node, ethhdr, batman_packet, 0, hna_buff_len, if_incoming); + bat_dbg(DBG_BATMAN, + "Forwarding packet: rebroadcast originator packet\n"); + schedule_forward_packet(orig_node, ethhdr, batman_packet, + 0, hna_buff_len, if_incoming); } -void purge_orig(struct work_struct *work) -{ - struct list_head *list_pos, *list_pos_tmp; - struct hash_it_t *hashit = NULL; - struct orig_node *orig_node; - struct neigh_node *neigh_node, *best_neigh_node; - char orig_str[ETH_STR_LEN], neigh_str[ETH_STR_LEN], neigh_purged; - spin_lock(&orig_hash_lock); - - /* for all origins... */ - while (NULL != (hashit = hash_iterate(orig_hash, hashit))) { - - orig_node = hashit->bucket->data; - addr_to_string(orig_str, orig_node->orig); - - if (time_after(jiffies, orig_node->last_valid + ((2 * PURGE_TIMEOUT * HZ) / 1000))) { - - debug_log(LOG_TYPE_BATMAN, "Originator timeout: originator %s, last_valid %u \n", orig_str, (orig_node->last_valid / HZ)); - - hash_remove_bucket(orig_hash, hashit); - free_orig_node(orig_node); - - } else { - - best_neigh_node = NULL; - neigh_purged = 0; - - /* for all neighbours towards this originator ... */ - list_for_each_safe(list_pos, list_pos_tmp, &orig_node->neigh_list) { - neigh_node = list_entry(list_pos, struct neigh_node, list); - - if (time_after(jiffies, neigh_node->last_valid + ((PURGE_TIMEOUT * HZ) / 1000))) { - - addr_to_string(neigh_str, neigh_node->addr); - debug_log(LOG_TYPE_BATMAN, "Neighbour timeout: originator %s, neighbour: %s, last_valid %u \n", orig_str, neigh_str, (neigh_node->last_valid / HZ)); - - neigh_purged = 1; - list_del(list_pos); - kfree(neigh_node); - - } else { - - if ((best_neigh_node == NULL) || (neigh_node->tq_avg > best_neigh_node->tq_avg)) - best_neigh_node = neigh_node; - - } - - } - - if (neigh_purged) - update_routes(orig_node, best_neigh_node, orig_node->hna_buff, orig_node->hna_buff_len); - - } - - } - - spin_unlock(&orig_hash_lock); - - start_purge_timer(); -} - -static int receive_raw_packet(struct socket *raw_sock, unsigned char *packet_buff, int packet_buff_len) +static int receive_raw_packet(struct socket *raw_sock, + unsigned char *packet_buff, int packet_buff_len) { struct kvec iov; struct msghdr msg; @@ -631,367 +564,490 @@ static int receive_raw_packet(struct socket *raw_sock, unsigned char *packet_buf msg.msg_namelen = 0; msg.msg_control = NULL; - return kernel_recvmsg(raw_sock, &msg, &iov, 1, packet_buff_len, MSG_DONTWAIT); + return kernel_recvmsg(raw_sock, &msg, &iov, 1, packet_buff_len, + MSG_DONTWAIT); } -int packet_recv_thread(void *data) +static void recv_bat_packet(struct ethhdr *ethhdr, + unsigned char *packet_buff, + int result, + struct batman_if *batman_if) +{ + /* packet with broadcast indication but unicast recipient */ + if (!is_bcast(ethhdr->h_dest)) + return; + + /* packet with broadcast sender address */ + if (is_bcast(ethhdr->h_source)) + return; + + /* drop packet if it has not at least one batman packet as payload */ + if (result < sizeof(struct ethhdr) + sizeof(struct batman_packet)) + return; + + spin_lock(&orig_hash_lock); + receive_aggr_bat_packet(ethhdr, + packet_buff + sizeof(struct ethhdr), + result - sizeof(struct ethhdr), + batman_if); + spin_unlock(&orig_hash_lock); +} + +static void recv_my_icmp_packet(struct ethhdr *ethhdr, + struct icmp_packet *icmp_packet, + unsigned char *packet_buff, + int result) { - struct batman_if *batman_if; - struct ethhdr *ethhdr; - struct batman_packet *batman_packet; - struct unicast_packet *unicast_packet; - struct bcast_packet *bcast_packet; - struct icmp_packet *icmp_packet; - struct vis_packet *vis_packet; struct orig_node *orig_node; - unsigned char *packet_buff, src_str[ETH_STR_LEN], dst_str[ETH_STR_LEN]; - int vis_info_len; - int result; - atomic_set(&data_ready_cond, 0); - atomic_set(&exit_cond, 0); - packet_buff = kmalloc(PACKBUFF_SIZE, GFP_KERNEL); - if (!packet_buff) { - debug_log(LOG_TYPE_CRIT, "Could allocate memory for the packet buffer. :(\n"); - return -1; + /* add data to device queue */ + if (icmp_packet->msg_type != ECHO_REQUEST) { + bat_device_receive_packet(icmp_packet); + return; } - while ((!kthread_should_stop()) && (!atomic_read(&exit_cond))) { + /* answer echo request (ping) */ + /* get routing information */ + spin_lock(&orig_hash_lock); + orig_node = ((struct orig_node *)hash_find(orig_hash, + icmp_packet->orig)); + + if ((orig_node != NULL) && + (orig_node->batman_if != NULL) && + (orig_node->router != NULL)) { + memcpy(icmp_packet->dst, icmp_packet->orig, ETH_ALEN); + memcpy(icmp_packet->orig, ethhdr->h_dest, ETH_ALEN); + icmp_packet->msg_type = ECHO_REPLY; + icmp_packet->ttl = TTL; + + send_raw_packet(packet_buff + sizeof(struct ethhdr), + result - sizeof(struct ethhdr), + orig_node->batman_if, + orig_node->router->addr); + } - wait_event_interruptible(thread_wait, (atomic_read(&data_ready_cond) || atomic_read(&exit_cond))); + spin_unlock(&orig_hash_lock); + return; +} - atomic_set(&data_ready_cond, 0); +static void recv_icmp_ttl_exceeded(struct icmp_packet *icmp_packet, + struct ethhdr *ethhdr, + unsigned char *packet_buff, + int result, + struct batman_if *batman_if) +{ + unsigned char src_str[ETH_STR_LEN], dst_str[ETH_STR_LEN]; + struct orig_node *orig_node; - if (kthread_should_stop() || atomic_read(&exit_cond)) - break; + addr_to_string(src_str, icmp_packet->orig); + addr_to_string(dst_str, icmp_packet->dst); - /* we only want to safely traverse the list, hard-interfaces - * won't be deleted anyway as long as this thread runs. */ + printk(KERN_WARNING "batman-adv:Warning - can't send packet from %s to %s: ttl exceeded\n", src_str, dst_str); - rcu_read_lock(); - list_for_each_entry_rcu(batman_if, &if_list, list) { - rcu_read_unlock(); - - result = -1; - - while (1) { - if (batman_if->if_active != IF_ACTIVE) { - if (batman_if->if_active != IF_TO_BE_ACTIVATED) - debug_log(LOG_TYPE_NOTICE, - "Could not read from deactivated interface %s!\n", - batman_if->dev); - - if (batman_if->raw_sock) - receive_raw_packet(batman_if->raw_sock, packet_buff, PACKBUFF_SIZE); - result = 0; - break; - } - - result = receive_raw_packet(batman_if->raw_sock, packet_buff, PACKBUFF_SIZE); - if (result <= 0) - break; + /* send TTL exceeded if packet is an echo request (traceroute) */ + if (icmp_packet->msg_type != ECHO_REQUEST) + return; - if (result < sizeof(struct ethhdr) + 2) - continue; + /* get routing information */ + spin_lock(&orig_hash_lock); + orig_node = ((struct orig_node *) + hash_find(orig_hash, icmp_packet->orig)); + + if ((orig_node != NULL) && + (orig_node->batman_if != NULL) && + (orig_node->router != NULL)) { + memcpy(icmp_packet->dst, icmp_packet->orig, ETH_ALEN); + memcpy(icmp_packet->orig, ethhdr->h_dest, ETH_ALEN); + icmp_packet->msg_type = TTL_EXCEEDED; + icmp_packet->ttl = TTL; + + send_raw_packet(packet_buff + sizeof(struct ethhdr), + result - sizeof(struct ethhdr), + orig_node->batman_if, + orig_node->router->addr); - ethhdr = (struct ethhdr *)packet_buff; - batman_packet = (struct batman_packet *)(packet_buff + sizeof(struct ethhdr)); + } - if (batman_packet->version != COMPAT_VERSION) { - debug_log(LOG_TYPE_BATMAN, "Drop packet: incompatible batman version (%i) \n", batman_packet->version); - continue; - } + spin_unlock(&orig_hash_lock); +} - switch (batman_packet->packet_type) { - /* batman originator packet */ - case BAT_PACKET: - /* packet with broadcast indication but unicast recipient */ - if (!is_bcast(ethhdr->h_dest)) - continue; - /* packet with broadcast sender address */ - if (is_bcast(ethhdr->h_source)) - continue; - /* drop packet if it has not at least one batman packet as payload */ - if (result < sizeof(struct ethhdr) + sizeof(struct batman_packet)) - continue; +static void recv_icmp_packet(struct ethhdr *ethhdr, + unsigned char *packet_buff, + int result, + struct batman_if *batman_if) +{ + struct icmp_packet *icmp_packet; + struct orig_node *orig_node; - spin_lock(&orig_hash_lock); - receive_aggr_bat_packet(ethhdr, - packet_buff + sizeof(struct ethhdr), - result - sizeof(struct ethhdr), - batman_if); - spin_unlock(&orig_hash_lock); + /* packet with unicast indication but broadcast recipient */ + if (is_bcast(ethhdr->h_dest)) + return; - break; + /* packet with broadcast sender address */ + if (is_bcast(ethhdr->h_source)) + return; - /* batman icmp packet */ - case BAT_ICMP: - /* packet with unicast indication but broadcast recipient */ - if (is_bcast(ethhdr->h_dest)) - continue; + /* not for me */ + if (!is_my_mac(ethhdr->h_dest)) + return; - /* packet with broadcast sender address */ - if (is_bcast(ethhdr->h_source)) - continue; + /* drop packet if it has not necessary minimum size */ + if (result < sizeof(struct ethhdr) + sizeof(struct icmp_packet)) + return; - /* not for me */ - if (!is_my_mac(ethhdr->h_dest)) - continue; + icmp_packet = (struct icmp_packet *) + (packet_buff + sizeof(struct ethhdr)); - /* drop packet if it has not necessary minimum size */ - if (result < sizeof(struct ethhdr) + sizeof(struct icmp_packet)) - continue; + /* packet for me */ + if (is_my_mac(icmp_packet->dst)) + recv_my_icmp_packet(ethhdr, icmp_packet, packet_buff, result); - icmp_packet = (struct icmp_packet *)(packet_buff + sizeof(struct ethhdr)); + /* TTL exceeded */ + if (icmp_packet->ttl < 2) { + recv_icmp_ttl_exceeded(icmp_packet, ethhdr, packet_buff, result, + batman_if); + return; - /* packet for me */ - if (is_my_mac(icmp_packet->dst)) { + } - /* add data to device queue */ - if (icmp_packet->msg_type != ECHO_REQUEST) { - bat_device_receive_packet(icmp_packet); - continue; - } + /* get routing information */ + spin_lock(&orig_hash_lock); + orig_node = ((struct orig_node *) + hash_find(orig_hash, icmp_packet->dst)); - /* answer echo request (ping) */ - /* get routing information */ - spin_lock(&orig_hash_lock); - orig_node = ((struct orig_node *)hash_find(orig_hash, icmp_packet->orig)); + if ((orig_node != NULL) && + (orig_node->batman_if != NULL) && + (orig_node->router != NULL)) { - if ((orig_node != NULL) && (orig_node->batman_if != NULL) && (orig_node->router != NULL)) { + /* decrement ttl */ + icmp_packet->ttl--; - memcpy(icmp_packet->dst, icmp_packet->orig, ETH_ALEN); - memcpy(icmp_packet->orig, ethhdr->h_dest, ETH_ALEN); - icmp_packet->msg_type = ECHO_REPLY; - icmp_packet->ttl = TTL; + /* route it */ + send_raw_packet(packet_buff + sizeof(struct ethhdr), + result - sizeof(struct ethhdr), + orig_node->batman_if, + orig_node->router->addr); + } + spin_unlock(&orig_hash_lock); +} - send_raw_packet(packet_buff + sizeof(struct ethhdr), - result - sizeof(struct ethhdr), - orig_node->batman_if, - orig_node->router->addr); +static void recv_unicast_packet(struct ethhdr *ethhdr, + unsigned char *packet_buff, + int result, + struct batman_if *batman_if) +{ + struct unicast_packet *unicast_packet; + unsigned char src_str[ETH_STR_LEN], dst_str[ETH_STR_LEN]; + struct orig_node *orig_node; + int hdr_size = sizeof(struct ethhdr) + sizeof(struct unicast_packet); - } + /* packet with unicast indication but broadcast recipient */ + if (is_bcast(ethhdr->h_dest)) + return; - spin_unlock(&orig_hash_lock); - continue; + /* packet with broadcast sender address */ + if (is_bcast(ethhdr->h_source)) + return; - } + /* not for me */ + if (!is_my_mac(ethhdr->h_dest)) + return; - /* TTL exceeded */ - if (icmp_packet->ttl < 2) { + /* drop packet if it has not necessary minimum size */ + if (result < hdr_size) + return; - addr_to_string(src_str, icmp_packet->orig); - addr_to_string(dst_str, icmp_packet->dst); + unicast_packet = (struct unicast_packet *) + (packet_buff + sizeof(struct ethhdr)); - debug_log(LOG_TYPE_NOTICE, "Error - can't send packet from %s to %s: ttl exceeded\n", src_str, dst_str); + /* packet for me */ + if (is_my_mac(unicast_packet->dest)) { + interface_rx(soft_device, packet_buff + hdr_size, + result - hdr_size); + return; - /* send TTL exceeded if packet is an echo request (traceroute) */ - if (icmp_packet->msg_type != ECHO_REQUEST) - continue; + } - /* get routing information */ - spin_lock(&orig_hash_lock); - orig_node = ((struct orig_node *)hash_find(orig_hash, icmp_packet->orig)); + /* TTL exceeded */ + if (unicast_packet->ttl < 2) { + addr_to_string(src_str, ((struct ethhdr *) + (unicast_packet + 1))->h_source); + addr_to_string(dst_str, unicast_packet->dest); - if ((orig_node != NULL) && (orig_node->batman_if != NULL) && (orig_node->router != NULL)) { + printk(KERN_WARNING "batman-adv:Warning - can't send packet from %s to %s: ttl exceeded\n", src_str, dst_str); + return; + } - memcpy(icmp_packet->dst, icmp_packet->orig, ETH_ALEN); - memcpy(icmp_packet->orig, ethhdr->h_dest, ETH_ALEN); - icmp_packet->msg_type = TTL_EXCEEDED; - icmp_packet->ttl = TTL; + /* get routing information */ + spin_lock(&orig_hash_lock); + orig_node = ((struct orig_node *) + hash_find(orig_hash, unicast_packet->dest)); + + if ((orig_node != NULL) && + (orig_node->batman_if != NULL) && + (orig_node->router != NULL)) { + /* decrement ttl */ + unicast_packet->ttl--; + + /* route it */ + send_raw_packet(packet_buff + sizeof(struct ethhdr), + result - sizeof(struct ethhdr), + orig_node->batman_if, + orig_node->router->addr); + } + spin_unlock(&orig_hash_lock); +} - send_raw_packet(packet_buff + sizeof(struct ethhdr), - result - sizeof(struct ethhdr), - orig_node->batman_if, - orig_node->router->addr); - } +static void recv_bcast_packet(struct ethhdr *ethhdr, + unsigned char *packet_buff, + int result, + struct batman_if *batman_if) +{ + struct orig_node *orig_node; + struct bcast_packet *bcast_packet; + int hdr_size = sizeof(struct ethhdr) + sizeof(struct bcast_packet); - spin_unlock(&orig_hash_lock); - continue; + /* packet with broadcast indication but unicast recipient */ + if (!is_bcast(ethhdr->h_dest)) + return; - } + /* packet with broadcast sender address */ + if (is_bcast(ethhdr->h_source)) + return; - /* get routing information */ - spin_lock(&orig_hash_lock); - orig_node = ((struct orig_node *)hash_find(orig_hash, icmp_packet->dst)); + /* drop packet if it has not necessary minimum size */ + if (result < hdr_size) + return; - if ((orig_node != NULL) && (orig_node->batman_if != NULL) && (orig_node->router != NULL)) { + /* ignore broadcasts sent by myself */ + if (is_my_mac(ethhdr->h_source)) + return; - /* decrement ttl */ - icmp_packet->ttl--; + bcast_packet = (struct bcast_packet *) + (packet_buff + sizeof(struct ethhdr)); - /* route it */ - send_raw_packet(packet_buff + sizeof(struct ethhdr), - result - sizeof(struct ethhdr), - orig_node->batman_if, - orig_node->router->addr); - } + /* ignore broadcasts originated by myself */ + if (is_my_mac(bcast_packet->orig)) + return; - spin_unlock(&orig_hash_lock); - break; + spin_lock(&orig_hash_lock); + orig_node = ((struct orig_node *) + hash_find(orig_hash, bcast_packet->orig)); - /* unicast packet */ - case BAT_UNICAST: - /* packet with unicast indication but broadcast recipient */ - if (is_bcast(ethhdr->h_dest)) - continue; + if (orig_node == NULL) { + spin_unlock(&orig_hash_lock); + return; + } - /* packet with broadcast sender address */ - if (is_bcast(ethhdr->h_source)) - continue; + /* check flood history */ + if (get_bit_status(orig_node->bcast_bits, + orig_node->last_bcast_seqno, + ntohs(bcast_packet->seqno))) { + spin_unlock(&orig_hash_lock); + return; + } - /* not for me */ - if (!is_my_mac(ethhdr->h_dest)) - continue; + /* mark broadcast in flood history */ + if (bit_get_packet(orig_node->bcast_bits, + ntohs(bcast_packet->seqno) - + orig_node->last_bcast_seqno, 1)) + orig_node->last_bcast_seqno = ntohs(bcast_packet->seqno); - /* drop packet if it has not necessary minimum size */ - if (result < sizeof(struct ethhdr) + sizeof(struct unicast_packet)) - continue; + spin_unlock(&orig_hash_lock); - unicast_packet = (struct unicast_packet *)(packet_buff + sizeof(struct ethhdr)); + /* broadcast for me */ + interface_rx(soft_device, packet_buff + hdr_size, result - hdr_size); - /* packet for me */ - if (is_my_mac(unicast_packet->dest)) { + /* rebroadcast packet */ + add_bcast_packet_to_list(packet_buff + sizeof(struct ethhdr), + result - sizeof(struct ethhdr)); +} - interface_rx(soft_device, packet_buff + sizeof(struct ethhdr) + sizeof(struct unicast_packet), result - sizeof(struct ethhdr) - sizeof(struct unicast_packet)); - continue; +static void recv_vis_packet(struct ethhdr *ethhdr, + unsigned char *packet_buff, + int result) +{ + struct vis_packet *vis_packet; + int hdr_size = sizeof(struct ethhdr) + sizeof(struct vis_packet); + int vis_info_len; - } + /* drop if too short. */ + if (result < hdr_size) + return; - /* TTL exceeded */ - if (unicast_packet->ttl < 2) { - addr_to_string(src_str, ((struct ethhdr *)(unicast_packet + 1))->h_source); - addr_to_string(dst_str, unicast_packet->dest); + /* not for me */ + if (!is_my_mac(ethhdr->h_dest)) + return; - debug_log(LOG_TYPE_NOTICE, "Error - can't send packet from %s to %s: ttl exceeded\n", src_str, dst_str); - continue; - } + vis_packet = (struct vis_packet *)(packet_buff + sizeof(struct ethhdr)); + vis_info_len = result - hdr_size; - /* get routing information */ - spin_lock(&orig_hash_lock); - orig_node = ((struct orig_node *)hash_find(orig_hash, unicast_packet->dest)); + /* ignore own packets */ + if (is_my_mac(vis_packet->vis_orig)) + return; - if ((orig_node != NULL) && (orig_node->batman_if != NULL) && (orig_node->router != NULL)) { - /* decrement ttl */ - unicast_packet->ttl--; + if (is_my_mac(vis_packet->sender_orig)) + return; - /* route it */ - send_raw_packet(packet_buff + sizeof(struct ethhdr), - result - sizeof(struct ethhdr), - orig_node->batman_if, - orig_node->router->addr); - } + switch (vis_packet->vis_type) { + case VIS_TYPE_SERVER_SYNC: + receive_server_sync_packet(vis_packet, vis_info_len); + break; - spin_unlock(&orig_hash_lock); - break; + case VIS_TYPE_CLIENT_UPDATE: + receive_client_update_packet(vis_packet, vis_info_len); + break; - /* broadcast packet */ - case BAT_BCAST: - /* packet with broadcast indication but unicast recipient */ - if (!is_bcast(ethhdr->h_dest)) - continue; + default: /* ignore unknown packet */ + break; + } +} - /* packet with broadcast sender address */ - if (is_bcast(ethhdr->h_source)) - continue; +static int recv_one_packet(struct batman_if *batman_if, + unsigned char *packet_buff) +{ + int result; + struct ethhdr *ethhdr; + struct batman_packet *batman_packet; - /* drop packet if it has not necessary minimum size */ - if (result < sizeof(struct ethhdr) + sizeof(struct bcast_packet)) - continue; + result = receive_raw_packet(batman_if->raw_sock, packet_buff, + PACKBUFF_SIZE); + if (result <= 0) + return result; - /* ignore broadcasts sent by myself */ - if (is_my_mac(ethhdr->h_source)) - continue; + if (result < sizeof(struct ethhdr) + 2) + return 0; - bcast_packet = (struct bcast_packet *)(packet_buff + sizeof(struct ethhdr)); + ethhdr = (struct ethhdr *)packet_buff; + batman_packet = (struct batman_packet *) + (packet_buff + sizeof(struct ethhdr)); - /* ignore broadcasts originated by myself */ - if (is_my_mac(bcast_packet->orig)) - continue; + if (batman_packet->version != COMPAT_VERSION) { + bat_dbg(DBG_BATMAN, + "Drop packet: incompatible batman version (%i)\n", + batman_packet->version); + return 0; + } - spin_lock(&orig_hash_lock); - orig_node = ((struct orig_node *)hash_find(orig_hash, bcast_packet->orig)); + switch (batman_packet->packet_type) { + /* batman originator packet */ + case BAT_PACKET: + recv_bat_packet(ethhdr, packet_buff, result, batman_if); + break; + + /* batman icmp packet */ + case BAT_ICMP: + recv_icmp_packet(ethhdr, packet_buff, result, batman_if); + break; + + /* unicast packet */ + case BAT_UNICAST: + recv_unicast_packet(ethhdr, packet_buff, result, batman_if); + break; + + /* broadcast packet */ + case BAT_BCAST: + recv_bcast_packet(ethhdr, + packet_buff, result, batman_if); + break; + + /* vis packet */ + case BAT_VIS: + recv_vis_packet(ethhdr, packet_buff, result); + break; + } + return 0; +} - if (orig_node == NULL) { - spin_unlock(&orig_hash_lock); - continue; - } - /* check flood history */ - if (get_bit_status(orig_node->bcast_bits, orig_node->last_bcast_seqno, ntohs(bcast_packet->seqno))) { - spin_unlock(&orig_hash_lock); - continue; - } +static int discard_one_packet(struct batman_if *batman_if, + unsigned char *packet_buff) +{ + int result = -EAGAIN; - /* mark broadcast in flood history */ - if (bit_get_packet(orig_node->bcast_bits, ntohs(bcast_packet->seqno) - orig_node->last_bcast_seqno, 1)) - orig_node->last_bcast_seqno = ntohs(bcast_packet->seqno); + if (batman_if->raw_sock) { + result = receive_raw_packet(batman_if->raw_sock, + packet_buff, + PACKBUFF_SIZE); + } + return result; +} - spin_unlock(&orig_hash_lock); - /* broadcast for me */ - interface_rx(soft_device, packet_buff + sizeof(struct ethhdr) + sizeof(struct bcast_packet), result - sizeof(struct ethhdr) - sizeof(struct bcast_packet)); +static bool is_interface_active(struct batman_if *batman_if) +{ + if (batman_if->if_active != IF_ACTIVE) + return false; - /* rebroadcast packet */ - add_bcast_packet_to_list(packet_buff + sizeof(struct ethhdr), - result - sizeof(struct ethhdr)); + return true; +} - break; +static void service_interface(struct batman_if *batman_if, + unsigned char *packet_buff) - /* vis packet */ - case BAT_VIS: - /* drop if too short. */ - if (result < sizeof(struct ethhdr) + sizeof(struct vis_packet)) - continue; +{ + int result; - /* not for me */ - if (!is_my_mac(ethhdr->h_dest)) - continue; + do { + if (is_interface_active(batman_if)) + result = recv_one_packet(batman_if, packet_buff); + else + result = discard_one_packet(batman_if, packet_buff); + } while (result >= 0); - vis_packet = (struct vis_packet *)(packet_buff + sizeof(struct ethhdr)); - vis_info_len = result - sizeof(struct ethhdr) - sizeof(struct vis_packet); + /* we perform none blocking reads, so EAGAIN indicates there + are no more packets to read. Anything else is a real + error.*/ - /* ignore own packets */ - if (is_my_mac(vis_packet->vis_orig)) - continue; + if ((result < 0) && (result != -EAGAIN)) + printk(KERN_ERR "batman-adv:Could not receive packet from interface %s: %i\n", batman_if->dev, result); +} - if (is_my_mac(vis_packet->sender_orig)) - continue; +static void service_interfaces(unsigned char *packet_buffer) +{ + struct batman_if *batman_if; + rcu_read_lock(); + list_for_each_entry_rcu(batman_if, &if_list, list) { + rcu_read_unlock(); + service_interface(batman_if, packet_buffer); + rcu_read_lock(); + } + rcu_read_unlock(); +} - switch (vis_packet->vis_type) { - case VIS_TYPE_SERVER_SYNC: - receive_server_sync_packet(vis_packet, vis_info_len); - break; - case VIS_TYPE_CLIENT_UPDATE: - receive_client_update_packet(vis_packet, vis_info_len); - break; +int packet_recv_thread(void *data) +{ + unsigned char *packet_buff; - default: /* ignore unknown packet */ - break; - } + atomic_set(&data_ready_cond, 0); + atomic_set(&exit_cond, 0); + packet_buff = kmalloc(PACKBUFF_SIZE, GFP_KERNEL); + if (!packet_buff) { + printk(KERN_ERR"batman-adv:Could allocate memory for the packet buffer. :(\n"); + return -1; + } - break; - } + while ((!kthread_should_stop()) && (!atomic_read(&exit_cond))) { - } + wait_event_interruptible(thread_wait, + (atomic_read(&data_ready_cond) || + atomic_read(&exit_cond))); - if ((result < 0) && (result != -EAGAIN)) - debug_log(LOG_TYPE_CRIT, "Could not receive packet from interface %s: %i\n", batman_if->dev, result); + atomic_set(&data_ready_cond, 0); - /* lock for the next iteration */ - rcu_read_lock(); - } - rcu_read_unlock(); + if (kthread_should_stop() || atomic_read(&exit_cond)) + break; + service_interfaces(packet_buff); } kfree(packet_buff); - /* do not exit until kthread_stop() is actually called, otherwise it will wait for us - * forever. */ + /* do not exit until kthread_stop() is actually called, + * otherwise it will wait for us forever. */ while (!kthread_should_stop()) schedule(); diff --git a/drivers/staging/batman-adv/routing.h b/drivers/staging/batman-adv/routing.h index 0123ea86debb..890a4f53b553 100644 --- a/drivers/staging/batman-adv/routing.h +++ b/drivers/staging/batman-adv/routing.h @@ -24,11 +24,13 @@ extern wait_queue_head_t thread_wait; extern atomic_t exit_cond; -int originator_init(void); -void free_orig_node(void *data); -void originator_free(void); void slide_own_bcast_window(struct batman_if *batman_if); void batman_data_ready(struct sock *sk, int len); -void purge_orig(struct work_struct *work); int packet_recv_thread(void *data); -void receive_bat_packet(struct ethhdr *ethhdr, struct batman_packet *batman_packet, unsigned char *hna_buff, int hna_buff_len, struct batman_if *if_incoming); +void receive_bat_packet(struct ethhdr *ethhdr, + struct batman_packet *batman_packet, + unsigned char *hna_buff, int hna_buff_len, + struct batman_if *if_incoming); +void update_routes(struct orig_node *orig_node, + struct neigh_node *neigh_node, + unsigned char *hna_buff, int hna_buff_len); diff --git a/drivers/staging/batman-adv/send.c b/drivers/staging/batman-adv/send.c index eb617508cca4..fc4953f50dff 100644 --- a/drivers/staging/batman-adv/send.c +++ b/drivers/staging/batman-adv/send.c @@ -21,7 +21,6 @@ #include "main.h" #include "send.h" -#include "log.h" #include "routing.h" #include "translation-table.h" #include "hard-interface.h" @@ -72,9 +71,9 @@ void send_raw_packet(unsigned char *pack_buff, int pack_buff_len, return; if (!(batman_if->net_dev->flags & IFF_UP)) { - debug_log(LOG_TYPE_WARN, - "Interface %s is not up - can't send packet via that interface (IF_TO_BE_DEACTIVATED was here) !\n", - batman_if->dev); + printk(KERN_WARNING + "batman-adv:Interface %s is not up - can't send packet via that interface!\n", + batman_if->dev); return; } @@ -101,9 +100,9 @@ void send_raw_packet(unsigned char *pack_buff, int pack_buff_len, * (which is > 0). This will not be treated as an error. */ retval = dev_queue_xmit(skb); if (retval < 0) - debug_log(LOG_TYPE_CRIT, - "Can't write to raw socket (IF_TO_BE_DEACTIVATED was here): %i\n", - retval); + printk(KERN_WARNING + "batman-adv:Can't write to raw socket: %i\n", + retval); } /* Send a packet to a given interface */ @@ -140,15 +139,15 @@ static void send_packet_to_if(struct forw_packet *forw_packet, fwd_str = (packet_num > 0 ? "Forwarding" : (forw_packet->own ? "Sending own" : "Forwarding")); - debug_log(LOG_TYPE_BATMAN, - "%s %spacket (originator %s, seqno %d, TQ %d, TTL %d, IDF %s) on interface %s [%s]\n", - fwd_str, - (packet_num > 0 ? "aggregated " : ""), - orig_str, ntohs(batman_packet->seqno), - batman_packet->tq, batman_packet->ttl, - (batman_packet->flags & DIRECTLINK ? - "on" : "off"), - batman_if->dev, batman_if->addr_str); + bat_dbg(DBG_BATMAN, + "%s %spacket (originator %s, seqno %d, TQ %d, TTL %d, IDF %s) on interface %s [%s]\n", + fwd_str, + (packet_num > 0 ? "aggregated " : ""), + orig_str, ntohs(batman_packet->seqno), + batman_packet->tq, batman_packet->ttl, + (batman_packet->flags & DIRECTLINK ? + "on" : "off"), + batman_if->dev, batman_if->addr_str); buff_pos += sizeof(struct batman_packet) + (batman_packet->num_hna * ETH_ALEN); @@ -172,8 +171,7 @@ static void send_packet(struct forw_packet *forw_packet) unsigned char directlink = (batman_packet->flags & DIRECTLINK ? 1 : 0); if (!forw_packet->if_incoming) { - debug_log(LOG_TYPE_CRIT, - "Error - can't forward packet: incoming iface not specified\n"); + printk(KERN_ERR "batman-adv: Error - can't forward packet: incoming iface not specified\n"); return; } @@ -188,12 +186,12 @@ static void send_packet(struct forw_packet *forw_packet) (forw_packet->own && (forw_packet->if_incoming->if_num > 0))) { /* FIXME: what about aggregated packets ? */ - debug_log(LOG_TYPE_BATMAN, - "%s packet (originator %s, seqno %d, TTL %d) on interface %s [%s]\n", - (forw_packet->own ? "Sending own" : "Forwarding"), - orig_str, ntohs(batman_packet->seqno), - batman_packet->ttl, forw_packet->if_incoming->dev, - forw_packet->if_incoming->addr_str); + bat_dbg(DBG_BATMAN, + "%s packet (originator %s, seqno %d, TTL %d) on interface %s [%s]\n", + (forw_packet->own ? "Sending own" : "Forwarding"), + orig_str, ntohs(batman_packet->seqno), + batman_packet->ttl, forw_packet->if_incoming->dev, + forw_packet->if_incoming->addr_str); send_raw_packet(forw_packet->packet_buff, forw_packet->packet_len, @@ -286,7 +284,7 @@ void schedule_forward_packet(struct orig_node *orig_node, unsigned long send_time; if (batman_packet->ttl <= 1) { - debug_log(LOG_TYPE_BATMAN, "ttl exceeded \n"); + bat_dbg(DBG_BATMAN, "ttl exceeded \n"); return; } @@ -314,9 +312,9 @@ void schedule_forward_packet(struct orig_node *orig_node, /* apply hop penalty */ batman_packet->tq = hop_penalty(batman_packet->tq); - debug_log(LOG_TYPE_BATMAN, "Forwarding packet: tq_orig: %i, tq_avg: %i, tq_forw: %i, ttl_orig: %i, ttl_forw: %i \n", - in_tq, tq_avg, batman_packet->tq, in_ttl - 1, - batman_packet->ttl); + bat_dbg(DBG_BATMAN, "Forwarding packet: tq_orig: %i, tq_avg: %i, tq_forw: %i, ttl_orig: %i, ttl_forw: %i \n", + in_tq, tq_avg, batman_packet->tq, in_ttl - 1, + batman_packet->ttl); batman_packet->seqno = htons(batman_packet->seqno); @@ -439,7 +437,7 @@ void purge_outstanding_packets(void) struct forw_packet *forw_packet; struct hlist_node *tmp_node, *safe_tmp_node; - debug_log(LOG_TYPE_BATMAN, "purge_outstanding_packets()\n"); + bat_dbg(DBG_BATMAN, "purge_outstanding_packets()\n"); /* free bcast list */ spin_lock(&forw_bcast_list_lock); diff --git a/drivers/staging/batman-adv/soft-interface.c b/drivers/staging/batman-adv/soft-interface.c index d543f50b647f..168a4e195a1c 100644 --- a/drivers/staging/batman-adv/soft-interface.c +++ b/drivers/staging/batman-adv/soft-interface.c @@ -24,7 +24,6 @@ #include "hard-interface.h" #include "send.h" #include "translation-table.h" -#include "log.h" #include "types.h" #include "hash.h" #include <linux/ethtool.h> @@ -212,7 +211,7 @@ int interface_tx(struct sk_buff *skb, struct net_device *dev) * dropping */ if (!spin_trylock(&orig_hash_lock)) { lock_dropped++; - debug_log(LOG_TYPE_NOTICE, "%d packets dropped because lock was hold\n", lock_dropped); + printk(KERN_WARNING "batman-adv:%d packets dropped because lock was hold\n", lock_dropped); goto dropped; } diff --git a/drivers/staging/batman-adv/translation-table.c b/drivers/staging/batman-adv/translation-table.c index c2190e177c56..c7122da98f1e 100644 --- a/drivers/staging/batman-adv/translation-table.c +++ b/drivers/staging/batman-adv/translation-table.c @@ -21,7 +21,6 @@ #include "main.h" #include "translation-table.h" -#include "log.h" #include "soft-interface.h" #include "types.h" #include "hash.h" @@ -82,12 +81,12 @@ void hna_local_add(uint8_t *addr) MAC-flooding. */ if ((num_hna + 1 > (ETH_DATA_LEN - BAT_PACKET_LEN) / ETH_ALEN) || (num_hna + 1 > 255)) { - debug_log(LOG_TYPE_ROUTES, "Can't add new local hna entry (%s): number of local hna entries exceeds packet size \n", hna_str); + bat_dbg(DBG_ROUTES, "Can't add new local hna entry (%s): number of local hna entries exceeds packet size \n", hna_str); return; } - debug_log(LOG_TYPE_ROUTES, "Creating new local hna entry: %s \n", - hna_str); + bat_dbg(DBG_ROUTES, "Creating new local hna entry: %s \n", + hna_str); hna_local_entry = kmalloc(sizeof(struct hna_local_entry), GFP_ATOMIC); if (!hna_local_entry) @@ -113,7 +112,7 @@ void hna_local_add(uint8_t *addr) hna_local_hash->size * 2); if (swaphash == NULL) - debug_log(LOG_TYPE_CRIT, "Couldn't resize local hna hash table \n"); + printk(KERN_ERR "batman-adv:Couldn't resize local hna hash table \n"); else hna_local_hash = swaphash; } @@ -205,8 +204,8 @@ static void hna_local_del(struct hna_local_entry *hna_local_entry, char hna_str[ETH_STR_LEN]; addr_to_string(hna_str, hna_local_entry->addr); - debug_log(LOG_TYPE_ROUTES, "Deleting local hna entry (%s): %s \n", - hna_str, message); + bat_dbg(DBG_ROUTES, "Deleting local hna entry (%s): %s \n", + hna_str, message); hash_remove(hna_local_hash, hna_local_entry->addr); _hna_local_del(hna_local_entry); @@ -291,7 +290,9 @@ void hna_global_add_orig(struct orig_node *orig_node, memcpy(hna_global_entry->addr, hna_ptr, ETH_ALEN); addr_to_string(hna_str, hna_global_entry->addr); - debug_log(LOG_TYPE_ROUTES, "Creating new global hna entry: %s (via %s)\n", hna_str, orig_str); + bat_dbg(DBG_ROUTES, + "Creating new global hna entry: %s (via %s)\n", + hna_str, orig_str); spin_lock_irqsave(&hna_global_hash_lock, flags); hash_add(hna_global_hash, hna_global_entry); @@ -333,7 +334,7 @@ void hna_global_add_orig(struct orig_node *orig_node, hna_global_hash->size * 2); if (swaphash == NULL) - debug_log(LOG_TYPE_CRIT, "Couldn't resize global hna hash table \n"); + printk(KERN_ERR "batman-adv:Couldn't resize global hna hash table \n"); else hna_global_hash = swaphash; } @@ -386,7 +387,8 @@ void _hna_global_del_orig(struct hna_global_entry *hna_global_entry, addr_to_string(orig_str, hna_global_entry->orig_node->orig); addr_to_string(hna_str, hna_global_entry->addr); - debug_log(LOG_TYPE_ROUTES, "Deleting global hna entry %s (via %s): %s \n", hna_str, orig_str, message); + bat_dbg(DBG_ROUTES, "Deleting global hna entry %s (via %s): %s \n", + hna_str, orig_str, message); hash_remove(hna_global_hash, hna_global_entry->addr); kfree(hna_global_entry); diff --git a/drivers/staging/batman-adv/vis.c b/drivers/staging/batman-adv/vis.c index f6c9acb289ed..cdb8aab146d7 100644 --- a/drivers/staging/batman-adv/vis.c +++ b/drivers/staging/batman-adv/vis.c @@ -23,7 +23,6 @@ #include "send.h" #include "translation-table.h" #include "vis.h" -#include "log.h" #include "soft-interface.h" #include "hard-interface.h" #include "hash.h" @@ -445,8 +444,7 @@ static void send_vis_packet(struct vis_info *info) int packet_length; if (info->packet.ttl < 2) { - debug_log(LOG_TYPE_NOTICE, - "Error - can't send vis packet: ttl exceeded\n"); + printk(KERN_WARNING "batman-adv: Error - can't send vis packet: ttl exceeded\n"); return; } @@ -495,13 +493,13 @@ int vis_init(void) vis_hash = hash_new(256, vis_info_cmp, vis_info_choose); if (!vis_hash) { - debug_log(LOG_TYPE_CRIT, "Can't initialize vis_hash\n"); + printk(KERN_ERR "batman-adv:Can't initialize vis_hash\n"); goto err; } my_vis_info = kmalloc(1000, GFP_ATOMIC); if (!my_vis_info) { - debug_log(LOG_TYPE_CRIT, "Can't initialize vis packet\n"); + printk(KERN_ERR "batman-adv:Can't initialize vis packet\n"); goto err; } @@ -522,8 +520,8 @@ int vis_init(void) memcpy(my_vis_info->packet.sender_orig, mainIfAddr, ETH_ALEN); if (hash_add(vis_hash, my_vis_info) < 0) { - debug_log(LOG_TYPE_CRIT, - "Can't add own vis packet into hash\n"); + printk(KERN_ERR + "batman-adv:Can't add own vis packet into hash\n"); free_info(my_vis_info); /* not in hash, need to remove it * manually. */ goto err; |