--- /dev/null
+/*
+ * cn_test.c
+ *
+ * 2004-2005 Copyright (c) Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/moduleparam.h>
+#include <linux/skbuff.h>
+#include <linux/timer.h>
+
+#include "connector.h"
+
+static struct cb_id cn_test_id = { 0x123, 0x456 };
+static char cn_test_name[] = "cn_test";
+static struct sock *nls;
+static struct timer_list cn_test_timer;
+
+void cn_test_callback(void *data)
+{
+ struct cn_msg *msg = (struct cn_msg *)data;
+
+ printk("%s: %lu: idx=%x, val=%x, seq=%u, ack=%u, len=%d: %s.\n",
+ __func__, jiffies, msg->id.idx, msg->id.val,
+ msg->seq, msg->ack, msg->len, (char *)msg->data);
+}
+
+static int cn_test_want_notify(void)
+{
+ struct cn_ctl_msg *ctl;
+ struct cn_notify_req *req;
+ struct cn_msg *msg = NULL;
+ int size, size0;
+ struct sk_buff *skb;
+ struct nlmsghdr *nlh;
+ u32 group = 1;
+
+ size0 = sizeof(*msg) + sizeof(*ctl) + 3 * sizeof(*req);
+
+ size = NLMSG_SPACE(size0);
+
+ skb = alloc_skb(size, GFP_ATOMIC);
+ if (!skb) {
+ printk(KERN_ERR "Failed to allocate new skb with size=%u.\n",
+ size);
+
+ return -ENOMEM;
+ }
+
+ nlh = NLMSG_PUT(skb, 0, 0x123, NLMSG_DONE, size - sizeof(*nlh));
+
+ msg = (struct cn_msg *)NLMSG_DATA(nlh);
+
+ memset(msg, 0, size0);
+
+ msg->id.idx = -1;
+ msg->id.val = -1;
+ msg->seq = 0x123;
+ msg->ack = 0x345;
+ msg->len = size0 - sizeof(*msg);
+
+ ctl = (struct cn_ctl_msg *)(msg + 1);
+
+ ctl->idx_notify_num = 1;
+ ctl->val_notify_num = 2;
+ ctl->group = group;
+ ctl->len = msg->len - sizeof(*ctl);
+
+ req = (struct cn_notify_req *)(ctl + 1);
+
+ /*
+ * Idx.
+ */
+ req->first = cn_test_id.idx;
+ req->range = 10;
+
+ /*
+ * Val 0.
+ */
+ req++;
+ req->first = cn_test_id.val;
+ req->range = 10;
+
+ /*
+ * Val 1.
+ */
+ req++;
+ req->first = cn_test_id.val + 20;
+ req->range = 10;
+
+ NETLINK_CB(skb).dst_groups = ctl->group;
+ //netlink_broadcast(nls, skb, 0, ctl->group, GFP_ATOMIC);
+ netlink_unicast(nls, skb, 0, 0);
+
+ printk(KERN_INFO "Request was sent. Group=0x%x.\n", ctl->group);
+
+ return 0;
+
+nlmsg_failure:
+ printk(KERN_ERR "Failed to send %u.%u\n", msg->seq, msg->ack);
+ kfree_skb(skb);
+ return -EINVAL;
+}
+
+static u32 cn_test_timer_counter;
+static void cn_test_timer_func(unsigned long __data)
+{
+ struct cn_msg *m;
+ char data[32];
+
+ m = kmalloc(sizeof(*m) + sizeof(data), GFP_ATOMIC);
+ if (m) {
+ memset(m, 0, sizeof(*m) + sizeof(data));
+
+ memcpy(&m->id, &cn_test_id, sizeof(m->id));
+ m->seq = cn_test_timer_counter;
+ m->len = sizeof(data);
+
+ m->len =
+ scnprintf(data, sizeof(data), "counter = %u",
+ cn_test_timer_counter) + 1;
+
+ memcpy(m + 1, data, m->len);
+
+ cn_netlink_send(m, 0, gfp_any());
+ kfree(m);
+ }
+
+ cn_test_timer_counter++;
+
+ mod_timer(&cn_test_timer, jiffies + HZ);
+}
+
+static int cn_test_init(void)
+{
+ int err;
+
+ err = cn_add_callback(&cn_test_id, cn_test_name, cn_test_callback);
+ if (err)
+ goto err_out;
+ cn_test_id.val++;
+ err = cn_add_callback(&cn_test_id, cn_test_name, cn_test_callback);
+ if (err) {
+ cn_del_callback(&cn_test_id);
+ goto err_out;
+ }
+
+ init_timer(&cn_test_timer);
+ cn_test_timer.function = cn_test_timer_func;
+ cn_test_timer.expires = jiffies + HZ;
+ cn_test_timer.data = 0;
+ add_timer(&cn_test_timer);
+
+ return 0;
+
+ err_out:
+ if (nls && nls->sk_socket)
+ sock_release(nls->sk_socket);
+
+ return err;
+}
+
+static void cn_test_fini(void)
+{
+ del_timer_sync(&cn_test_timer);
+ cn_del_callback(&cn_test_id);
+ cn_test_id.val--;
+ cn_del_callback(&cn_test_id);
+ if (nls && nls->sk_socket)
+ sock_release(nls->sk_socket);
+}
+
+module_init(cn_test_init);
+module_exit(cn_test_fini);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
+MODULE_DESCRIPTION("Connector's test module");
--- /dev/null
+/*****************************************/
+Kernel Connector.
+/*****************************************/
+
+Kernel connector - new netlink based userspace <-> kernel space easy
+to use communication module.
+
+Connector driver adds possibility to connect various agents using
+netlink based network. One must register callback and
+identifier. When driver receives special netlink message with
+appropriate identifier, appropriate callback will be called.
+
+From the userspace point of view it's quite straightforward:
+
+ socket();
+ bind();
+ send();
+ recv();
+
+But if kernelspace want to use full power of such connections, driver
+writer must create special sockets, must know about struct sk_buff
+handling... Connector allows any kernelspace agents to use netlink
+based networking for inter-process communication in a significantly
+easier way:
+
+int cn_add_callback(struct cb_id *id, char *name, void (*callback) (void *));
+void cn_netlink_send(struct cn_msg *msg, u32 __group, int gfp_mask);
+
+struct cb_id
+{
+ __u32 idx;
+ __u32 val;
+};
+
+idx and val are unique identifiers which must be registered in
+connector.h for in-kernel usage. void (*callback) (void *) - is a
+callback function which will be called when message with above idx.val
+will be received by connector core. Argument for that function must
+be dereferenced to struct cn_msg *.
+
+struct cn_msg
+{
+ struct cb_id id;
+
+ __u32 seq;
+ __u32 ack;
+
+ __u32 len; /* Length of the following data */
+ __u8 data[0];
+};
+
+/*****************************************/
+Connector interfaces.
+/*****************************************/
+
+int cn_add_callback(struct cb_id *id, char *name, void (*callback) (void *));
+
+Registers new callback with connector core.
+
+struct cb_id *id - unique connector's user identifier.
+ It must be registered in connector.h for legal in-kernel users.
+char *name - connector's callback symbolic name.
+void (*callback) (void *) - connector's callback.
+ Argument must be dereferenced to struct cn_msg *.
+
+void cn_del_callback(struct cb_id *id);
+
+Unregisters new callback with connector core.
+
+struct cb_id *id - unique connector's user identifier.
+
+void cn_netlink_send(struct cn_msg *msg, u32 __groups, int gfp_mask);
+
+Sends message to the specified groups. It can be safely called from
+any context, but may silently fail under strong memory pressure.
+
+struct cn_msg * - message header(with attached data).
+u32 __group - destination group.
+ If __group is zero, then appropriate group will
+ be searched through all registered connector users,
+ and message will be delivered to the group which was
+ created for user with the same ID as in msg.
+ If __group is not zero, then message will be delivered
+ to the specified group.
+int gfp_mask - GFP mask.
+
+Note: When registering new callback user, connector core assigns
+netlink group to the user which is equal to it's id.idx.
+
+/*****************************************/
+Protocol description.
+/*****************************************/
+
+Current offers transport layer with fixed header. Recommended
+protocol which uses such header is following:
+
+msg->seq and msg->ack are used to determine message genealogy. When
+someone sends message it puts there locally unique sequence and random
+acknowledge numbers. Sequence number may be copied into
+nlmsghdr->nlmsg_seq too.
+
+Sequence number is incremented with each message to be sent.
+
+If we expect reply to our message, then sequence number in received
+message MUST be the same as in original message, and acknowledge
+number MUST be the same + 1.
+
+If we receive message and it's sequence number is not equal to one we
+are expecting, then it is new message. If we receive message and it's
+sequence number is the same as one we are expecting, but it's
+acknowledge is not equal acknowledge number in original message + 1,
+then it is new message.
+
+Obviously, protocol header contains above id.
+
+connector allows event notification in the following form: kernel
+driver or userspace process can ask connector to notify it when
+selected id's will be turned on or off(registered or unregistered it's
+callback). It is done by sending special command to connector
+driver(it also registers itself with id={-1, -1}).
+
+As example of usage Documentation/connector now contains cn_test.c -
+testing module which uses connector to request notification and to
+send messages.
+
+/*****************************************/
+Reliability.
+/*****************************************/
+
+Netlink itself is not reliable protocol, that means that messages can
+be lost due to memory pressure or process' receiving queue overflowed,
+so caller is warned must be prepared. That is why struct cn_msg [main
+connector's message header] contains u32 seq and u32 ack fields.
source "drivers/base/Kconfig"
+source "drivers/connector/Kconfig"
+
source "drivers/mtd/Kconfig"
source "drivers/parport/Kconfig"
# default.
obj-y += char/
+obj-$(CONFIG_CONNECTOR) += connector/
+
# i810fb and intelfb depend on char/agp/
obj-$(CONFIG_FB_I810) += video/i810/
obj-$(CONFIG_FB_INTEL) += video/intelfb/
--- /dev/null
+menu "Connector - unified userspace <-> kernelspace linker"
+
+config CONNECTOR
+ tristate "Connector - unified userspace <-> kernelspace linker"
+ depends on NET
+ ---help---
+ This is unified userspace <-> kernelspace connector working on top
+ of the netlink socket protocol.
+
+ Connector support can also be built as a module. If so, the module
+ will be called cn.ko.
+
+endmenu
--- /dev/null
+obj-$(CONFIG_CONNECTOR) += cn.o
+
+cn-y += cn_queue.o connector.o
--- /dev/null
+/*
+ * cn_queue.c
+ *
+ * 2004-2005 Copyright (c) Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/list.h>
+#include <linux/workqueue.h>
+#include <linux/spinlock.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/suspend.h>
+#include <linux/connector.h>
+#include <linux/delay.h>
+
+static void cn_queue_wrapper(void *data)
+{
+ struct cn_callback_entry *cbq = data;
+
+ cbq->cb->callback(cbq->cb->priv);
+ cbq->destruct_data(cbq->ddata);
+ cbq->ddata = NULL;
+}
+
+static struct cn_callback_entry *cn_queue_alloc_callback_entry(struct cn_callback *cb)
+{
+ struct cn_callback_entry *cbq;
+
+ cbq = kzalloc(sizeof(*cbq), GFP_KERNEL);
+ if (!cbq) {
+ printk(KERN_ERR "Failed to create new callback queue.\n");
+ return NULL;
+ }
+
+ cbq->cb = cb;
+ INIT_WORK(&cbq->work, &cn_queue_wrapper, cbq);
+ return cbq;
+}
+
+static void cn_queue_free_callback(struct cn_callback_entry *cbq)
+{
+ cancel_delayed_work(&cbq->work);
+ flush_workqueue(cbq->pdev->cn_queue);
+
+ kfree(cbq);
+}
+
+int cn_cb_equal(struct cb_id *i1, struct cb_id *i2)
+{
+ return ((i1->idx == i2->idx) && (i1->val == i2->val));
+}
+
+int cn_queue_add_callback(struct cn_queue_dev *dev, struct cn_callback *cb)
+{
+ struct cn_callback_entry *cbq, *__cbq;
+ int found = 0;
+
+ cbq = cn_queue_alloc_callback_entry(cb);
+ if (!cbq)
+ return -ENOMEM;
+
+ atomic_inc(&dev->refcnt);
+ cbq->pdev = dev;
+
+ spin_lock_bh(&dev->queue_lock);
+ list_for_each_entry(__cbq, &dev->queue_list, callback_entry) {
+ if (cn_cb_equal(&__cbq->cb->id, &cb->id)) {
+ found = 1;
+ break;
+ }
+ }
+ if (!found)
+ list_add_tail(&cbq->callback_entry, &dev->queue_list);
+ spin_unlock_bh(&dev->queue_lock);
+
+ if (found) {
+ atomic_dec(&dev->refcnt);
+ cn_queue_free_callback(cbq);
+ return -EINVAL;
+ }
+
+ cbq->nls = dev->nls;
+ cbq->seq = 0;
+ cbq->group = cbq->cb->id.idx;
+
+ return 0;
+}
+
+void cn_queue_del_callback(struct cn_queue_dev *dev, struct cb_id *id)
+{
+ struct cn_callback_entry *cbq, *n;
+ int found = 0;
+
+ spin_lock_bh(&dev->queue_lock);
+ list_for_each_entry_safe(cbq, n, &dev->queue_list, callback_entry) {
+ if (cn_cb_equal(&cbq->cb->id, id)) {
+ list_del(&cbq->callback_entry);
+ found = 1;
+ break;
+ }
+ }
+ spin_unlock_bh(&dev->queue_lock);
+
+ if (found) {
+ cn_queue_free_callback(cbq);
+ atomic_dec_and_test(&dev->refcnt);
+ }
+}
+
+struct cn_queue_dev *cn_queue_alloc_dev(char *name, struct sock *nls)
+{
+ struct cn_queue_dev *dev;
+
+ dev = kzalloc(sizeof(*dev), GFP_KERNEL);
+ if (!dev)
+ return NULL;
+
+ snprintf(dev->name, sizeof(dev->name), "%s", name);
+ atomic_set(&dev->refcnt, 0);
+ INIT_LIST_HEAD(&dev->queue_list);
+ spin_lock_init(&dev->queue_lock);
+
+ dev->nls = nls;
+ dev->netlink_groups = 0;
+
+ dev->cn_queue = create_workqueue(dev->name);
+ if (!dev->cn_queue) {
+ kfree(dev);
+ return NULL;
+ }
+
+ return dev;
+}
+
+void cn_queue_free_dev(struct cn_queue_dev *dev)
+{
+ struct cn_callback_entry *cbq, *n;
+
+ flush_workqueue(dev->cn_queue);
+ destroy_workqueue(dev->cn_queue);
+
+ spin_lock_bh(&dev->queue_lock);
+ list_for_each_entry_safe(cbq, n, &dev->queue_list, callback_entry)
+ list_del(&cbq->callback_entry);
+ spin_unlock_bh(&dev->queue_lock);
+
+ while (atomic_read(&dev->refcnt)) {
+ printk(KERN_INFO "Waiting for %s to become free: refcnt=%d.\n",
+ dev->name, atomic_read(&dev->refcnt));
+ msleep(1000);
+ }
+
+ kfree(dev);
+ dev = NULL;
+}
--- /dev/null
+/*
+ * connector.c
+ *
+ * 2004-2005 Copyright (c) Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/list.h>
+#include <linux/skbuff.h>
+#include <linux/netlink.h>
+#include <linux/moduleparam.h>
+#include <linux/connector.h>
+
+#include <net/sock.h>
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Evgeniy Polyakov <johnpol@2ka.mipt.ru>");
+MODULE_DESCRIPTION("Generic userspace <-> kernelspace connector.");
+
+static u32 cn_idx = CN_IDX_CONNECTOR;
+static u32 cn_val = CN_VAL_CONNECTOR;
+
+module_param(cn_idx, uint, 0);
+module_param(cn_val, uint, 0);
+MODULE_PARM_DESC(cn_idx, "Connector's main device idx.");
+MODULE_PARM_DESC(cn_val, "Connector's main device val.");
+
+static DECLARE_MUTEX(notify_lock);
+static LIST_HEAD(notify_list);
+
+static struct cn_dev cdev;
+
+int cn_already_initialized = 0;
+
+/*
+ * msg->seq and msg->ack are used to determine message genealogy.
+ * When someone sends message it puts there locally unique sequence
+ * and random acknowledge numbers. Sequence number may be copied into
+ * nlmsghdr->nlmsg_seq too.
+ *
+ * Sequence number is incremented with each message to be sent.
+ *
+ * If we expect reply to our message then the sequence number in
+ * received message MUST be the same as in original message, and
+ * acknowledge number MUST be the same + 1.
+ *
+ * If we receive a message and its sequence number is not equal to the
+ * one we are expecting then it is a new message.
+ *
+ * If we receive a message and its sequence number is the same as one
+ * we are expecting but it's acknowledgement number is not equal to
+ * the acknowledgement number in the original message + 1, then it is
+ * a new message.
+ *
+ */
+int cn_netlink_send(struct cn_msg *msg, u32 __group, int gfp_mask)
+{
+ struct cn_callback_entry *__cbq;
+ unsigned int size;
+ struct sk_buff *skb;
+ struct nlmsghdr *nlh;
+ struct cn_msg *data;
+ struct cn_dev *dev = &cdev;
+ u32 group = 0;
+ int found = 0;
+
+ if (!__group) {
+ spin_lock_bh(&dev->cbdev->queue_lock);
+ list_for_each_entry(__cbq, &dev->cbdev->queue_list,
+ callback_entry) {
+ if (cn_cb_equal(&__cbq->cb->id, &msg->id)) {
+ found = 1;
+ group = __cbq->group;
+ }
+ }
+ spin_unlock_bh(&dev->cbdev->queue_lock);
+
+ if (!found)
+ return -ENODEV;
+ } else {
+ group = __group;
+ }
+
+ size = NLMSG_SPACE(sizeof(*msg) + msg->len);
+
+ skb = alloc_skb(size, gfp_mask);
+ if (!skb)
+ return -ENOMEM;
+
+ nlh = NLMSG_PUT(skb, 0, msg->seq, NLMSG_DONE, size - sizeof(*nlh));
+
+ data = NLMSG_DATA(nlh);
+
+ memcpy(data, msg, sizeof(*data) + msg->len);
+
+ NETLINK_CB(skb).dst_group = group;
+
+ netlink_broadcast(dev->nls, skb, 0, group, gfp_mask);
+
+ return 0;
+
+nlmsg_failure:
+ kfree_skb(skb);
+ return -EINVAL;
+}
+
+/*
+ * Callback helper - queues work and setup destructor for given data.
+ */
+static int cn_call_callback(struct cn_msg *msg, void (*destruct_data)(void *), void *data)
+{
+ struct cn_callback_entry *__cbq;
+ struct cn_dev *dev = &cdev;
+ int found = 0;
+
+ spin_lock_bh(&dev->cbdev->queue_lock);
+ list_for_each_entry(__cbq, &dev->cbdev->queue_list, callback_entry) {
+ if (cn_cb_equal(&__cbq->cb->id, &msg->id)) {
+ /*
+ * Let's scream if there is some magic and the
+ * data will arrive asynchronously here.
+ * [i.e. netlink messages will be queued].
+ * After the first warning I will fix it
+ * quickly, but now I think it is
+ * impossible. --zbr (2004_04_27).
+ */
+ if (likely(!test_bit(0, &__cbq->work.pending) &&
+ __cbq->ddata == NULL)) {
+ __cbq->cb->priv = msg;
+
+ __cbq->ddata = data;
+ __cbq->destruct_data = destruct_data;
+
+ if (queue_work(dev->cbdev->cn_queue,
+ &__cbq->work))
+ found = 1;
+ } else {
+ printk("%s: cbq->data=%p, "
+ "work->pending=%08lx.\n",
+ __func__, __cbq->ddata,
+ __cbq->work.pending);
+ WARN_ON(1);
+ }
+ break;
+ }
+ }
+ spin_unlock_bh(&dev->cbdev->queue_lock);
+
+ return found ? 0 : -ENODEV;
+}
+
+/*
+ * Skb receive helper - checks skb and msg size and calls callback
+ * helper.
+ */
+static int __cn_rx_skb(struct sk_buff *skb, struct nlmsghdr *nlh)
+{
+ u32 pid, uid, seq, group;
+ struct cn_msg *msg;
+
+ pid = NETLINK_CREDS(skb)->pid;
+ uid = NETLINK_CREDS(skb)->uid;
+ seq = nlh->nlmsg_seq;
+ group = NETLINK_CB((skb)).dst_group;
+ msg = NLMSG_DATA(nlh);
+
+ return cn_call_callback(msg, (void (*)(void *))kfree_skb, skb);
+}
+
+/*
+ * Main netlink receiving function.
+ *
+ * It checks skb and netlink header sizes and calls the skb receive
+ * helper with a shared skb.
+ */
+static void cn_rx_skb(struct sk_buff *__skb)
+{
+ struct nlmsghdr *nlh;
+ u32 len;
+ int err;
+ struct sk_buff *skb;
+
+ skb = skb_get(__skb);
+
+ if (skb->len >= NLMSG_SPACE(0)) {
+ nlh = (struct nlmsghdr *)skb->data;
+
+ if (nlh->nlmsg_len < sizeof(struct cn_msg) ||
+ skb->len < nlh->nlmsg_len ||
+ nlh->nlmsg_len > CONNECTOR_MAX_MSG_SIZE) {
+ kfree_skb(skb);
+ goto out;
+ }
+
+ len = NLMSG_ALIGN(nlh->nlmsg_len);
+ if (len > skb->len)
+ len = skb->len;
+
+ err = __cn_rx_skb(skb, nlh);
+ if (err < 0)
+ kfree_skb(skb);
+ }
+
+out:
+ kfree_skb(__skb);
+}
+
+/*
+ * Netlink socket input callback - dequeues the skbs and calls the
+ * main netlink receiving function.
+ */
+static void cn_input(struct sock *sk, int len)
+{
+ struct sk_buff *skb;
+
+ while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL)
+ cn_rx_skb(skb);
+}
+
+/*
+ * Notification routing.
+ *
+ * Gets id and checks if there are notification request for it's idx
+ * and val. If there are such requests notify the listeners with the
+ * given notify event.
+ *
+ */
+static void cn_notify(struct cb_id *id, u32 notify_event)
+{
+ struct cn_ctl_entry *ent;
+
+ down(¬ify_lock);
+ list_for_each_entry(ent, ¬ify_list, notify_entry) {
+ int i;
+ struct cn_notify_req *req;
+ struct cn_ctl_msg *ctl = ent->msg;
+ int idx_found, val_found;
+
+ idx_found = val_found = 0;
+
+ req = (struct cn_notify_req *)ctl->data;
+ for (i = 0; i < ctl->idx_notify_num; ++i, ++req) {
+ if (id->idx >= req->first &&
+ id->idx < req->first + req->range) {
+ idx_found = 1;
+ break;
+ }
+ }
+
+ for (i = 0; i < ctl->val_notify_num; ++i, ++req) {
+ if (id->val >= req->first &&
+ id->val < req->first + req->range) {
+ val_found = 1;
+ break;
+ }
+ }
+
+ if (idx_found && val_found) {
+ struct cn_msg m = { .ack = notify_event, };
+
+ memcpy(&m.id, id, sizeof(m.id));
+ cn_netlink_send(&m, ctl->group, GFP_KERNEL);
+ }
+ }
+ up(¬ify_lock);
+}
+
+/*
+ * Callback add routing - adds callback with given ID and name.
+ * If there is registered callback with the same ID it will not be added.
+ *
+ * May sleep.
+ */
+int cn_add_callback(struct cb_id *id, char *name, void (*callback)(void *))
+{
+ int err;
+ struct cn_dev *dev = &cdev;
+ struct cn_callback *cb;
+
+ cb = kzalloc(sizeof(*cb), GFP_KERNEL);
+ if (!cb)
+ return -ENOMEM;
+
+ scnprintf(cb->name, sizeof(cb->name), "%s", name);
+
+ memcpy(&cb->id, id, sizeof(cb->id));
+ cb->callback = callback;
+
+ err = cn_queue_add_callback(dev->cbdev, cb);
+ if (err) {
+ kfree(cb);
+ return err;
+ }
+
+ cn_notify(id, 0);
+
+ return 0;
+}
+
+/*
+ * Callback remove routing - removes callback
+ * with given ID.
+ * If there is no registered callback with given
+ * ID nothing happens.
+ *
+ * May sleep while waiting for reference counter to become zero.
+ */
+void cn_del_callback(struct cb_id *id)
+{
+ struct cn_dev *dev = &cdev;
+
+ cn_queue_del_callback(dev->cbdev, id);
+ cn_notify(id, 1);
+}
+
+/*
+ * Checks two connector's control messages to be the same.
+ * Returns 1 if they are the same or if the first one is corrupted.
+ */
+static int cn_ctl_msg_equals(struct cn_ctl_msg *m1, struct cn_ctl_msg *m2)
+{
+ int i;
+ struct cn_notify_req *req1, *req2;
+
+ if (m1->idx_notify_num != m2->idx_notify_num)
+ return 0;
+
+ if (m1->val_notify_num != m2->val_notify_num)
+ return 0;
+
+ if (m1->len != m2->len)
+ return 0;
+
+ if ((m1->idx_notify_num + m1->val_notify_num) * sizeof(*req1) !=
+ m1->len)
+ return 1;
+
+ req1 = (struct cn_notify_req *)m1->data;
+ req2 = (struct cn_notify_req *)m2->data;
+
+ for (i = 0; i < m1->idx_notify_num; ++i) {
+ if (req1->first != req2->first || req1->range != req2->range)
+ return 0;
+ req1++;
+ req2++;
+ }
+
+ for (i = 0; i < m1->val_notify_num; ++i) {
+ if (req1->first != req2->first || req1->range != req2->range)
+ return 0;
+ req1++;
+ req2++;
+ }
+
+ return 1;
+}
+
+/*
+ * Main connector device's callback.
+ *
+ * Used for notification of a request's processing.
+ */
+static void cn_callback(void *data)
+{
+ struct cn_msg *msg = data;
+ struct cn_ctl_msg *ctl;
+ struct cn_ctl_entry *ent;
+ u32 size;
+
+ if (msg->len < sizeof(*ctl))
+ return;
+
+ ctl = (struct cn_ctl_msg *)msg->data;
+
+ size = (sizeof(*ctl) + ((ctl->idx_notify_num +
+ ctl->val_notify_num) *
+ sizeof(struct cn_notify_req)));
+
+ if (msg->len != size)
+ return;
+
+ if (ctl->len + sizeof(*ctl) != msg->len)
+ return;
+
+ /*
+ * Remove notification.
+ */
+ if (ctl->group == 0) {
+ struct cn_ctl_entry *n;
+
+ down(¬ify_lock);
+ list_for_each_entry_safe(ent, n, ¬ify_list, notify_entry) {
+ if (cn_ctl_msg_equals(ent->msg, ctl)) {
+ list_del(&ent->notify_entry);
+ kfree(ent);
+ }
+ }
+ up(¬ify_lock);
+
+ return;
+ }
+
+ size += sizeof(*ent);
+
+ ent = kzalloc(size, GFP_KERNEL);
+ if (!ent)
+ return;
+
+ ent->msg = (struct cn_ctl_msg *)(ent + 1);
+
+ memcpy(ent->msg, ctl, size - sizeof(*ent));
+
+ down(¬ify_lock);
+ list_add(&ent->notify_entry, ¬ify_list);
+ up(¬ify_lock);
+}
+
+static int __init cn_init(void)
+{
+ struct cn_dev *dev = &cdev;
+ int err;
+
+ dev->input = cn_input;
+ dev->id.idx = cn_idx;
+ dev->id.val = cn_val;
+
+ dev->nls = netlink_kernel_create(NETLINK_CONNECTOR,
+ CN_NETLINK_USERS + 0xf,
+ dev->input, THIS_MODULE);
+ if (!dev->nls)
+ return -EIO;
+
+ dev->cbdev = cn_queue_alloc_dev("cqueue", dev->nls);
+ if (!dev->cbdev) {
+ if (dev->nls->sk_socket)
+ sock_release(dev->nls->sk_socket);
+ return -EINVAL;
+ }
+
+ err = cn_add_callback(&dev->id, "connector", &cn_callback);
+ if (err) {
+ cn_queue_free_dev(dev->cbdev);
+ if (dev->nls->sk_socket)
+ sock_release(dev->nls->sk_socket);
+ return -EINVAL;
+ }
+
+ cn_already_initialized = 1;
+
+ return 0;
+}
+
+static void __exit cn_fini(void)
+{
+ struct cn_dev *dev = &cdev;
+
+ cn_already_initialized = 0;
+
+ cn_del_callback(&dev->id);
+ cn_queue_free_dev(dev->cbdev);
+ if (dev->nls->sk_socket)
+ sock_release(dev->nls->sk_socket);
+}
+
+module_init(cn_init);
+module_exit(cn_fini);
+
+EXPORT_SYMBOL_GPL(cn_add_callback);
+EXPORT_SYMBOL_GPL(cn_del_callback);
+EXPORT_SYMBOL_GPL(cn_netlink_send);
.phys_id = bnx2_phys_id,
.get_stats_count = bnx2_get_stats_count,
.get_ethtool_stats = bnx2_get_ethtool_stats,
+ .get_perm_addr = ethtool_op_get_perm_addr,
};
/* Called with rtnl_lock */
pci_set_drvdata(pdev, dev);
memcpy(dev->dev_addr, bp->mac_addr, 6);
+ memcpy(dev->perm_addr, bp->mac_addr, 6);
bp->name = board_info[ent->driver_data].name,
printk(KERN_INFO "%s: %s (%c%d) PCI%s %s %dMHz found at mem %lx, "
"IRQ %d, ",
{
#ifdef CONFIG_INET
if (type != htons(ETH_P_AX25))
- return ax25_encapsulate(skb, dev, type, daddr, saddr, len);
+ return ax25_hard_header(skb, dev, type, daddr, saddr, len);
#endif
return 0;
}
/*****************************************************************************/
-#include <linux/config.h>
+#include <linux/crc-ccitt.h>
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/workqueue.h>
#include <linux/fs.h>
#include <linux/parport.h>
-#include <linux/smp_lock.h>
-#include <asm/uaccess.h>
#include <linux/if_arp.h>
-#include <linux/kmod.h>
#include <linux/hdlcdrv.h>
#include <linux/baycom.h>
#include <linux/jiffies.h>
-#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
-/* prototypes for ax25_encapsulate and ax25_rebuild_header */
#include <net/ax25.h>
-#endif /* CONFIG_AX25 || CONFIG_AX25_MODULE */
-#include <linux/crc-ccitt.h>
+#include <asm/uaccess.h>
/* --------------------------------------------------------------------- */
/* Fill in the fields of the device structure */
bc->skb = NULL;
-#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
- dev->hard_header = ax25_encapsulate;
+ dev->hard_header = ax25_hard_header;
dev->rebuild_header = ax25_rebuild_header;
-#else /* CONFIG_AX25 || CONFIG_AX25_MODULE */
- dev->hard_header = NULL;
- dev->rebuild_header = NULL;
-#endif /* CONFIG_AX25 || CONFIG_AX25_MODULE */
dev->set_mac_address = baycom_set_mac_address;
dev->type = ARPHRD_AX25; /* AF_AX25 device */
dev->flags = 0;
#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
- dev->hard_header = ax25_encapsulate;
+ dev->hard_header = ax25_hard_header;
dev->rebuild_header = ax25_rebuild_header;
#endif
static void dev_setup(struct net_device *dev)
{
dev->type = ARPHRD_AX25;
- dev->hard_header_len = 73;
+ dev->hard_header_len = AX25_MAX_HEADER_LEN;
dev->mtu = 1500;
- dev->addr_len = 7;
+ dev->addr_len = AX25_ADDR_LEN;
dev->tx_queue_len = 64;
- memcpy(dev->broadcast, ax25_broadcast, 7);
- memcpy(dev->dev_addr, ax25_test, 7);
+ memcpy(dev->broadcast, ax25_broadcast, AX25_ADDR_LEN);
+ memcpy(dev->dev_addr, ax25_test, AX25_ADDR_LEN);
}
static int __init setup_adapter(int card_base, int type, int n)
dev->do_ioctl = scc_ioctl;
dev->hard_start_xmit = scc_send_packet;
dev->get_stats = scc_get_stats;
- dev->hard_header = ax25_encapsulate;
+ dev->hard_header = ax25_hard_header;
dev->rebuild_header = ax25_rebuild_header;
dev->set_mac_address = scc_set_mac_address;
}
/*****************************************************************************/
-#include <linux/config.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/net.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <linux/bitops.h>
-#include <asm/uaccess.h>
#include <linux/netdevice.h>
#include <linux/if_arp.h>
-#include <linux/etherdevice.h>
#include <linux/skbuff.h>
#include <linux/hdlcdrv.h>
-/* prototypes for ax25_encapsulate and ax25_rebuild_header */
#include <net/ax25.h>
+#include <asm/uaccess.h>
-/* make genksyms happy */
-#include <linux/ip.h>
-#include <linux/udp.h>
-#include <linux/tcp.h>
#include <linux/crc-ccitt.h>
/* --------------------------------------------------------------------- */
s->skb = NULL;
-#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
- dev->hard_header = ax25_encapsulate;
+ dev->hard_header = ax25_hard_header;
dev->rebuild_header = ax25_rebuild_header;
-#else /* CONFIG_AX25 || CONFIG_AX25_MODULE */
- dev->hard_header = NULL;
- dev->rebuild_header = NULL;
-#endif /* CONFIG_AX25 || CONFIG_AX25_MODULE */
dev->set_mac_address = hdlcdrv_set_mac_address;
dev->type = ARPHRD_AX25; /* AF_AX25 device */
{
#ifdef CONFIG_INET
if (type != htons(ETH_P_AX25))
- return ax25_encapsulate(skb, dev, type, daddr, saddr, len);
+ return ax25_hard_header(skb, dev, type, daddr, saddr, len);
#endif
return 0;
}
dev->stop = scc_net_close;
dev->hard_start_xmit = scc_net_tx;
- dev->hard_header = ax25_encapsulate;
+ dev->hard_header = ax25_hard_header;
dev->rebuild_header = ax25_rebuild_header;
dev->set_mac_address = scc_net_set_mac_address;
dev->get_stats = scc_net_get_stats;
#include <linux/if_arp.h>
#include <linux/etherdevice.h>
#include <linux/skbuff.h>
-#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
-/* prototypes for ax25_encapsulate and ax25_rebuild_header */
#include <net/ax25.h>
-#endif /* CONFIG_AX25 || CONFIG_AX25_MODULE */
-
-/* make genksyms happy */
-#include <linux/ip.h>
-#include <linux/udp.h>
-#include <linux/tcp.h>
#include <linux/kernel.h>
#include <linux/proc_fs.h>
skb_queue_head_init(&yp->send_queue);
-#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
- dev->hard_header = ax25_encapsulate;
+ dev->hard_header = ax25_hard_header;
dev->rebuild_header = ax25_rebuild_header;
-#else /* CONFIG_AX25 || CONFIG_AX25_MODULE */
- dev->hard_header = NULL;
- dev->rebuild_header = NULL;
-#endif /* CONFIG_AX25 || CONFIG_AX25_MODULE */
dev->set_mac_address = yam_set_mac_address;
- dev->type = ARPHRD_AX25; /* AF_AX25 device */
- dev->hard_header_len = 73; /* We do digipeaters now */
- dev->mtu = 256; /* AX25 is the default */
- dev->addr_len = 7; /* sizeof an ax.25 address */
- memcpy(dev->broadcast, ax25_bcast, 7);
- memcpy(dev->dev_addr, ax25_test, 7);
-
+ dev->type = ARPHRD_AX25;
+ dev->hard_header_len = AX25_MAX_HEADER_LEN;
+ dev->mtu = AX25_MTU;
+ dev->addr_len = AX25_ADDR_LEN;
+ memcpy(dev->broadcast, ax25_bcast, AX25_ADDR_LEN);
+ memcpy(dev->dev_addr, ax25_test, AX25_ADDR_LEN);
}
static int __init yam_init_driver(void)
get_stat64(&hw_stats->tx_octets);
stats->rx_errors = old_stats->rx_errors +
- get_stat64(&hw_stats->rx_errors) +
- get_stat64(&hw_stats->rx_discards);
+ get_stat64(&hw_stats->rx_errors);
stats->tx_errors = old_stats->tx_errors +
get_stat64(&hw_stats->tx_errors) +
get_stat64(&hw_stats->tx_mac_errors) +
stats->rx_crc_errors = old_stats->rx_crc_errors +
calc_crc_errors(tp);
+ stats->rx_missed_errors = old_stats->rx_missed_errors +
+ get_stat64(&hw_stats->rx_discards);
+
return stats;
}
.get_ethtool_stats = tg3_get_ethtool_stats,
.get_coalesce = tg3_get_coalesce,
.set_coalesce = tg3_set_coalesce,
+ .get_perm_addr = ethtool_op_get_perm_addr,
};
static void __devinit tg3_get_eeprom_size(struct tg3 *tp)
if (prom_getproplen(node, "local-mac-address") == 6) {
prom_getproperty(node, "local-mac-address",
dev->dev_addr, 6);
+ memcpy(dev->perm_addr, dev->dev_addr, 6);
return 0;
}
}
struct net_device *dev = tp->dev;
memcpy(dev->dev_addr, idprom->id_ethaddr, 6);
+ memcpy(dev->perm_addr, idprom->id_ethaddr, 6);
return 0;
}
#endif
#endif
return -EINVAL;
}
+ memcpy(dev->perm_addr, dev->dev_addr, dev->addr_len);
return 0;
}
--- /dev/null
+/*
+ * connector.h
+ *
+ * 2004-2005 Copyright (c) Evgeniy Polyakov <johnpol@2ka.mipt.ru>
+ * All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+#ifndef __CONNECTOR_H
+#define __CONNECTOR_H
+
+#include <asm/types.h>
+
+#define CN_IDX_CONNECTOR 0xffffffff
+#define CN_VAL_CONNECTOR 0xffffffff
+
+#define CN_NETLINK_USERS 1
+
+/*
+ * Maximum connector's message size.
+ */
+#define CONNECTOR_MAX_MSG_SIZE 1024
+
+/*
+ * idx and val are unique identifiers which
+ * are used for message routing and
+ * must be registered in connector.h for in-kernel usage.
+ */
+
+struct cb_id {
+ __u32 idx;
+ __u32 val;
+};
+
+struct cn_msg {
+ struct cb_id id;
+
+ __u32 seq;
+ __u32 ack;
+
+ __u16 len; /* Length of the following data */
+ __u16 flags;
+ __u8 data[0];
+};
+
+/*
+ * Notify structure - requests notification about
+ * registering/unregistering idx/val in range [first, first+range].
+ */
+struct cn_notify_req {
+ __u32 first;
+ __u32 range;
+};
+
+/*
+ * Main notification control message
+ * *_notify_num - number of appropriate cn_notify_req structures after
+ * this struct.
+ * group - notification receiver's idx.
+ * len - total length of the attached data.
+ */
+struct cn_ctl_msg {
+ __u32 idx_notify_num;
+ __u32 val_notify_num;
+ __u32 group;
+ __u32 len;
+ __u8 data[0];
+};
+
+#ifdef __KERNEL__
+
+#include <asm/atomic.h>
+
+#include <linux/list.h>
+#include <linux/workqueue.h>
+
+#include <net/sock.h>
+
+#define CN_CBQ_NAMELEN 32
+
+struct cn_queue_dev {
+ atomic_t refcnt;
+ unsigned char name[CN_CBQ_NAMELEN];
+
+ struct workqueue_struct *cn_queue;
+
+ struct list_head queue_list;
+ spinlock_t queue_lock;
+
+ int netlink_groups;
+ struct sock *nls;
+};
+
+struct cn_callback {
+ unsigned char name[CN_CBQ_NAMELEN];
+
+ struct cb_id id;
+ void (*callback) (void *);
+ void *priv;
+};
+
+struct cn_callback_entry {
+ struct list_head callback_entry;
+ struct cn_callback *cb;
+ struct work_struct work;
+ struct cn_queue_dev *pdev;
+
+ void (*destruct_data) (void *);
+ void *ddata;
+
+ int seq, group;
+ struct sock *nls;
+};
+
+struct cn_ctl_entry {
+ struct list_head notify_entry;
+ struct cn_ctl_msg *msg;
+};
+
+struct cn_dev {
+ struct cb_id id;
+
+ u32 seq, groups;
+ struct sock *nls;
+ void (*input) (struct sock * sk, int len);
+
+ struct cn_queue_dev *cbdev;
+};
+
+int cn_add_callback(struct cb_id *, char *, void (*callback) (void *));
+void cn_del_callback(struct cb_id *);
+int cn_netlink_send(struct cn_msg *, u32, int);
+
+int cn_queue_add_callback(struct cn_queue_dev *dev, struct cn_callback *cb);
+void cn_queue_del_callback(struct cn_queue_dev *dev, struct cb_id *id);
+
+struct cn_queue_dev *cn_queue_alloc_dev(char *name, struct sock *);
+void cn_queue_free_dev(struct cn_queue_dev *dev);
+
+int cn_cb_equal(struct cb_id *, struct cb_id *);
+
+extern int cn_already_initialized;
+
+#endif /* __KERNEL__ */
+#endif /* __CONNECTOR_H */
#define NETLINK_ISCSI 8 /* Open-iSCSI */
#define NETLINK_AUDIT 9 /* auditing */
#define NETLINK_FIB_LOOKUP 10
+#define NETLINK_CONNECTOR 11
#define NETLINK_NETFILTER 12 /* netfilter subsystem */
#define NETLINK_IP6_FW 13
#define NETLINK_DNRTMSG 14 /* DECnet routing messages */
NET_NETROM_TRANSPORT_REQUESTED_WINDOW_SIZE=8,
NET_NETROM_TRANSPORT_NO_ACTIVITY_TIMEOUT=9,
NET_NETROM_ROUTING_CONTROL=10,
- NET_NETROM_LINK_FAILS_COUNT=11
+ NET_NETROM_LINK_FAILS_COUNT=11,
+ NET_NETROM_RESET=12
};
/* /proc/sys/net/ax25 */
/* AX.25 Protocol IDs */
#define AX25_P_ROSE 0x01
-#define AX25_P_IP 0xCC
-#define AX25_P_ARP 0xCD
-#define AX25_P_TEXT 0xF0
-#define AX25_P_NETROM 0xCF
-#define AX25_P_SEGMENT 0x08
+#define AX25_P_VJCOMP 0x06 /* Compressed TCP/IP packet */
+ /* Van Jacobsen (RFC 1144) */
+#define AX25_P_VJUNCOMP 0x07 /* Uncompressed TCP/IP packet */
+ /* Van Jacobsen (RFC 1144) */
+#define AX25_P_SEGMENT 0x08 /* Segmentation fragment */
+#define AX25_P_TEXNET 0xc3 /* TEXTNET datagram protocol */
+#define AX25_P_LQ 0xc4 /* Link Quality Protocol */
+#define AX25_P_ATALK 0xca /* Appletalk */
+#define AX25_P_ATALK_ARP 0xcb /* Appletalk ARP */
+#define AX25_P_IP 0xcc /* ARPA Internet Protocol */
+#define AX25_P_ARP 0xcd /* ARPA Adress Resolution */
+#define AX25_P_FLEXNET 0xce /* FlexNet */
+#define AX25_P_NETROM 0xcf /* NET/ROM */
+#define AX25_P_TEXT 0xF0 /* No layer 3 protocol impl. */
/* AX.25 Segment control values */
#define AX25_SEG_REM 0x7F
/* Define Link State constants. */
enum {
- AX25_STATE_0,
- AX25_STATE_1,
- AX25_STATE_2,
- AX25_STATE_3,
- AX25_STATE_4
+ AX25_STATE_0, /* Listening */
+ AX25_STATE_1, /* SABM sent */
+ AX25_STATE_2, /* DISC sent */
+ AX25_STATE_3, /* Established */
+ AX25_STATE_4 /* Recovery */
};
#define AX25_MODULUS 8 /* Standard AX.25 modulus */
extern int ax25_kiss_rcv(struct sk_buff *, struct net_device *, struct packet_type *, struct net_device *);
/* ax25_ip.c */
-extern int ax25_encapsulate(struct sk_buff *, struct net_device *, unsigned short, void *, void *, unsigned int);
+extern int ax25_hard_header(struct sk_buff *, struct net_device *, unsigned short, void *, void *, unsigned int);
extern int ax25_rebuild_header(struct sk_buff *);
/* ax25_out.c */
#ifndef _NETROM_H
#define _NETROM_H
+
#include <linux/netrom.h>
#include <linux/list.h>
#include <net/sock.h>
#define NR_DISCACK 0x04
#define NR_INFO 0x05
#define NR_INFOACK 0x06
+#define NR_RESET 0x07
#define NR_CHOKE_FLAG 0x80
#define NR_NAK_FLAG 0x40
#define NR_DEFAULT_TTL 16 /* Default Time To Live - 16 */
#define NR_DEFAULT_ROUTING 1 /* Is routing enabled ? */
#define NR_DEFAULT_FAILS 2 /* Link fails until route fails */
+#define NR_DEFAULT_RESET 0 /* Sent / accept reset cmds? */
#define NR_MODULUS 256
#define NR_MAX_WINDOW_SIZE 127 /* Maximum Window Allowable - 127 */
#define NR_MAX_PACKET_SIZE 236 /* Maximum Packet Length - 236 */
+struct nr_private {
+ struct net_device_stats stats;
+};
+
struct nr_sock {
struct sock sock;
ax25_address user_addr, source_addr, dest_addr;
extern int sysctl_netrom_transport_no_activity_timeout;
extern int sysctl_netrom_routing_control;
extern int sysctl_netrom_link_fails_count;
+extern int sysctl_netrom_reset_circuit;
+
extern int nr_rx_frame(struct sk_buff *, struct net_device *);
extern void nr_destroy_socket(struct sock *);
extern int nr_validate_nr(struct sock *, unsigned short);
extern int nr_in_rx_window(struct sock *, unsigned short);
extern void nr_write_internal(struct sock *, int);
-extern void nr_transmit_refusal(struct sk_buff *, int);
+
+extern void __nr_transmit_reply(struct sk_buff *skb, int mine,
+ unsigned char cmdflags);
+
+/*
+ * This routine is called when a Connect Acknowledge with the Choke Flag
+ * set is needed to refuse a connection.
+ */
+#define nr_transmit_refusal(skb, mine) \
+do { \
+ __nr_transmit_reply((skb), (mine), NR_CONNACK | NR_CHOKE_FLAG); \
+} while (0)
+
+/*
+ * This routine is called when we don't have a circuit matching an incoming
+ * NET/ROM packet. This is an G8PZT Xrouter extension.
+ */
+#define nr_transmit_reset(skb, mine) \
+do { \
+ __nr_transmit_reply((skb), (mine), NR_RESET); \
+} while (0)
+
extern void nr_disconnect(struct sock *, int);
/* nr_timer.c */
/* These two are safe on a single CPU system as only user tasks fiddle here */
if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
amount = skb->len;
- res = put_user(amount, (int __user *)argp);
+ res = put_user(amount, (int __user *) argp);
break;
}
case SIOCGSTAMP:
- if (sk != NULL) {
- res = sock_get_timestamp(sk, argp);
- break;
- }
- res = -EINVAL;
+ res = sock_get_timestamp(sk, argp);
break;
case SIOCAX25ADDUID: /* Add a uid to the uid/call map table */
};
static struct proto_ops ax25_proto_ops = {
- .family = PF_AX25,
- .owner = THIS_MODULE,
- .release = ax25_release,
- .bind = ax25_bind,
- .connect = ax25_connect,
- .socketpair = sock_no_socketpair,
- .accept = ax25_accept,
- .getname = ax25_getname,
- .poll = datagram_poll,
- .ioctl = ax25_ioctl,
- .listen = ax25_listen,
- .shutdown = ax25_shutdown,
- .setsockopt = ax25_setsockopt,
- .getsockopt = ax25_getsockopt,
- .sendmsg = ax25_sendmsg,
- .recvmsg = ax25_recvmsg,
- .mmap = sock_no_mmap,
- .sendpage = sock_no_sendpage,
+ .family = PF_AX25,
+ .owner = THIS_MODULE,
+ .release = ax25_release,
+ .bind = ax25_bind,
+ .connect = ax25_connect,
+ .socketpair = sock_no_socketpair,
+ .accept = ax25_accept,
+ .getname = ax25_getname,
+ .poll = datagram_poll,
+ .ioctl = ax25_ioctl,
+ .listen = ax25_listen,
+ .shutdown = ax25_shutdown,
+ .setsockopt = ax25_setsockopt,
+ .getsockopt = ax25_getsockopt,
+ .sendmsg = ax25_sendmsg,
+ .recvmsg = ax25_recvmsg,
+ .mmap = sock_no_mmap,
+ .sendpage = sock_no_sendpage,
};
/*
.notifier_call =ax25_device_event,
};
-EXPORT_SYMBOL(ax25_encapsulate);
+EXPORT_SYMBOL(ax25_hard_header);
EXPORT_SYMBOL(ax25_rebuild_header);
EXPORT_SYMBOL(ax25_findbyuid);
EXPORT_SYMBOL(ax25_find_cb);
#ifdef CONFIG_INET
-int ax25_encapsulate(struct sk_buff *skb, struct net_device *dev, unsigned short type, void *daddr, void *saddr, unsigned len)
+int ax25_hard_header(struct sk_buff *skb, struct net_device *dev, unsigned short type, void *daddr, void *saddr, unsigned len)
{
unsigned char *buff;
*buff++ = AX25_P_ARP;
break;
default:
- printk(KERN_ERR "AX.25: ax25_encapsulate - wrong protocol type 0x%2.2x\n", type);
+ printk(KERN_ERR "AX.25: ax25_hard_header - wrong protocol type 0x%2.2x\n", type);
*buff++ = 0;
break;
}
#else /* INET */
-int ax25_encapsulate(struct sk_buff *skb, struct net_device *dev, unsigned short type, void *daddr, void *saddr, unsigned len)
+int ax25_hard_header(struct sk_buff *skb, struct net_device *dev, unsigned short type, void *daddr, void *saddr, unsigned len)
{
return -AX25_HEADER_LEN;
}
thread_lock();
t->control |= T_REMDEV;
thread_unlock();
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(HZ/8); /* Propagate thread->control */
+ schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
ret = count;
sprintf(pg_result, "OK: rem_device_all");
goto out;
printk(KERN_INFO "sleeping for %d\n", (int)(spin_until_us - now));
while (now < spin_until_us) {
/* TODO: optimise sleeping behavior */
- if (spin_until_us - now > (1000000/HZ)+1) {
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(1);
- } else if (spin_until_us - now > 100) {
+ if (spin_until_us - now > jiffies_to_usecs(1)+1)
+ schedule_timeout_interruptible(1);
+ else if (spin_until_us - now > 100) {
do_softirq();
if (!pkt_dev->running)
return;
}
thread_unlock();
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(HZ/8); /* Propagate thread->control */
+ schedule_timeout_interruptible(msecs_to_jiffies(125)); /* Propagate thread->control */
pktgen_wait_all_threads_run();
}
{
const struct ccid3_hc_rx_sock *hcrx = ccid3_hc_rx_sk(sk);
+ /* Listen socks doesn't have a private CCID block */
+ if (sk->sk_state == DCCP_LISTEN)
+ return;
+
BUG_ON(hcrx == NULL);
info->tcpi_ca_state = hcrx->ccid3hcrx_state;
{
const struct ccid3_hc_tx_sock *hctx = ccid3_hc_tx_sk(sk);
+ /* Listen socks doesn't have a private CCID block */
+ if (sk->sk_state == DCCP_LISTEN)
+ return;
+
BUG_ON(hctx == NULL);
info->tcpi_rto = hctx->ccid3hctx_t_rto;
#endif
jiff = jiffies + (d->next ? CONF_INTER_TIMEOUT : timeout);
- while (time_before(jiffies, jiff) && !ic_got_reply) {
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(1);
- }
+ while (time_before(jiffies, jiff) && !ic_got_reply)
+ schedule_timeout_uninterruptible(1);
#ifdef IPCONFIG_DHCP
/* DHCP isn't done until we get a DHCPACK. */
if ((ic_got_reply & IC_BOOTP)
self->tty = NULL;
if (self->blocked_open) {
- if (self->close_delay) {
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(self->close_delay);
- }
+ if (self->close_delay)
+ schedule_timeout_interruptible(self->close_delay);
wake_up_interruptible(&self->open_wait);
}
spin_lock_irqsave(&self->spinlock, flags);
while (self->tx_skb && self->tx_skb->len) {
spin_unlock_irqrestore(&self->spinlock, flags);
- current->state = TASK_INTERRUPTIBLE;
- schedule_timeout(poll_time);
+ schedule_timeout_interruptible(poll_time);
spin_lock_irqsave(&self->spinlock, flags);
if (signal_pending(current))
break;
int sysctl_netrom_transport_no_activity_timeout = NR_DEFAULT_IDLE;
int sysctl_netrom_routing_control = NR_DEFAULT_ROUTING;
int sysctl_netrom_link_fails_count = NR_DEFAULT_FAILS;
+int sysctl_netrom_reset_circuit = NR_DEFAULT_RESET;
static unsigned short circuit = 0x101;
if (frametype != NR_CONNREQ) {
/*
* Here it would be nice to be able to send a reset but
- * NET/ROM doesn't have one. The following hack would
- * have been a way to extend the protocol but apparently
- * it kills BPQ boxes... :-(
+ * NET/ROM doesn't have one. We've tried to extend the protocol
+ * by sending NR_CONNACK | NR_CHOKE_FLAGS replies but that
+ * apparently kills BPQ boxes... :-(
+ * So now we try to follow the established behaviour of
+ * G8PZT's Xrouter which is sending packets with command type 7
+ * as an extension of the protocol.
*/
-#if 0
- /*
- * Never reply to a CONNACK/CHOKE.
- */
- if (frametype != NR_CONNACK || flags != NR_CHOKE_FLAG)
- nr_transmit_refusal(skb, 1);
-#endif
+ if (sysctl_netrom_reset_circuit &&
+ (frametype != NR_RESET || flags != 0))
+ nr_transmit_reset(skb, 1);
+
return 0;
}
}
case SIOCGSTAMP:
- ret = -EINVAL;
- if (sk != NULL)
- ret = sock_get_timestamp(sk, argp);
+ ret = sock_get_timestamp(sk, argp);
release_sock(sk);
return ret;
struct net_device *dev;
sprintf(name, "nr%d", i);
- dev = alloc_netdev(sizeof(struct net_device_stats), name,
- nr_setup);
+ dev = alloc_netdev(sizeof(struct nr_private), name, nr_setup);
if (!dev) {
printk(KERN_ERR "NET/ROM: nr_proto_init - unable to allocate device structure\n");
goto fail;
struct net_device_stats *stats = netdev_priv(dev);
if (!netif_running(dev)) {
- stats->rx_errors++;
+ stats->rx_dropped++;
return 0;
}
static int nr_rebuild_header(struct sk_buff *skb)
{
- struct net_device *dev = skb->dev;
- struct net_device_stats *stats = netdev_priv(dev);
- struct sk_buff *skbn;
unsigned char *bp = skb->data;
- int len;
- if (arp_find(bp + 7, skb)) {
+ if (arp_find(bp + 7, skb))
return 1;
- }
bp[6] &= ~AX25_CBIT;
bp[6] &= ~AX25_EBIT;
bp[6] |= AX25_EBIT;
bp[6] |= AX25_SSSID_SPARE;
- if ((skbn = skb_clone(skb, GFP_ATOMIC)) == NULL) {
- kfree_skb(skb);
- return 1;
- }
-
- if (skb->sk != NULL)
- skb_set_owner_w(skbn, skb->sk);
-
- kfree_skb(skb);
-
- len = skbn->len;
-
- if (!nr_route_frame(skbn, NULL)) {
- kfree_skb(skbn);
- stats->tx_errors++;
- }
-
- stats->tx_packets++;
- stats->tx_bytes += len;
-
- return 1;
+ return 0;
}
#else
static int nr_xmit(struct sk_buff *skb, struct net_device *dev)
{
- struct net_device_stats *stats = netdev_priv(dev);
- dev_kfree_skb(skb);
- stats->tx_errors++;
+ struct nr_private *nr = netdev_priv(dev);
+ struct net_device_stats *stats = &nr->stats;
+ unsigned int len = skb->len;
+
+ if (!nr_route_frame(skb, NULL)) {
+ kfree_skb(skb);
+ stats->tx_errors++;
+ return 0;
+ }
+
+ stats->tx_packets++;
+ stats->tx_bytes += len;
+
return 0;
}
static struct net_device_stats *nr_get_stats(struct net_device *dev)
{
- return netdev_priv(dev);
+ struct nr_private *nr = netdev_priv(dev);
+
+ return &nr->stats;
}
void nr_setup(struct net_device *dev)
dev->hard_header_len = NR_NETWORK_LEN + NR_TRANSPORT_LEN;
dev->addr_len = AX25_ADDR_LEN;
dev->type = ARPHRD_NETROM;
- dev->tx_queue_len = 40;
dev->rebuild_header = nr_rebuild_header;
dev->set_mac_address = nr_set_mac_address;
/* New-style flags. */
- dev->flags = 0;
+ dev->flags = IFF_NOARP;
dev->get_stats = nr_get_stats;
}
nr_disconnect(sk, ECONNREFUSED);
break;
+ case NR_RESET:
+ if (sysctl_netrom_reset_circuit);
+ nr_disconnect(sk, ECONNRESET);
+ break;
+
default:
break;
}
nr_disconnect(sk, 0);
break;
+ case NR_RESET:
+ if (sysctl_netrom_reset_circuit);
+ nr_disconnect(sk, ECONNRESET);
+ break;
+
default:
break;
}
}
break;
+ case NR_RESET:
+ if (sysctl_netrom_reset_circuit);
+ nr_disconnect(sk, ECONNRESET);
+ break;
+
default:
break;
}
}
/*
- * This routine is called when a Connect Acknowledge with the Choke Flag
- * set is needed to refuse a connection.
+ * This routine is called to send an error reply.
*/
-void nr_transmit_refusal(struct sk_buff *skb, int mine)
+void __nr_transmit_reply(struct sk_buff *skb, int mine, unsigned char cmdflags)
{
struct sk_buff *skbn;
unsigned char *dptr;
*dptr++ = 0;
}
- *dptr++ = NR_CONNACK | NR_CHOKE_FLAG;
+ *dptr++ = cmdflags;
*dptr++ = 0;
if (!nr_route_frame(skbn, NULL))
static int max_idle[] = {65535 * HZ};
static int min_route[] = {0}, max_route[] = {1};
static int min_fails[] = {1}, max_fails[] = {10};
+static int min_reset[] = {0}, max_reset[] = {1};
static struct ctl_table_header *nr_table_header;
.extra1 = &min_fails,
.extra2 = &max_fails
},
+ {
+ .ctl_name = NET_NETROM_RESET,
+ .procname = "reset",
+ .data = &sysctl_netrom_reset_circuit,
+ .maxlen = sizeof(int),
+ .mode = 0644,
+ .proc_handler = &proc_dointvec_minmax,
+ .strategy = &sysctl_intvec,
+ .extra1 = &min_reset,
+ .extra2 = &max_reset
+ },
{ .ctl_name = 0 }
};
amount = sk->sk_sndbuf - atomic_read(&sk->sk_wmem_alloc);
if (amount < 0)
amount = 0;
- return put_user(amount, (unsigned int __user *)argp);
+ return put_user(amount, (unsigned int __user *) argp);
}
case TIOCINQ: {
/* These two are safe on a single CPU system as only user tasks fiddle here */
if ((skb = skb_peek(&sk->sk_receive_queue)) != NULL)
amount = skb->len;
- return put_user(amount, (unsigned int __user *)argp);
+ return put_user(amount, (unsigned int __user *) argp);
}
case SIOCGSTAMP:
- if (sk != NULL)
- return sock_get_timestamp(sk, (struct timeval __user *)argp);
- return -EINVAL;
+ return sock_get_timestamp(sk, (struct timeval __user *) argp);
case SIOCGIFADDR:
case SIOCSIFADDR:
dev->set_mac_address = rose_set_mac_address;
/* New-style flags. */
- dev->flags = 0;
+ dev->flags = IFF_NOARP;
dev->get_stats = rose_get_stats;
}
while (rqstp->rq_arghi < pages) {
struct page *p = alloc_page(GFP_KERNEL);
if (!p) {
- set_current_state(TASK_UNINTERRUPTIBLE);
- schedule_timeout(HZ/2);
+ schedule_timeout_uninterruptible(msecs_to_jiffies(500));
continue;
}
rqstp->rq_argpages[rqstp->rq_arghi++] = p;
projects / linux-2.6-omap-h63xx.git / commitdiff