From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/drivers/net/hamradio/6pack.c | 43 ++++++++++++-------------------------------
1 files changed, 12 insertions(+), 31 deletions(-)
diff --git a/kernel/drivers/net/hamradio/6pack.c b/kernel/drivers/net/hamradio/6pack.c
index af776d7..83dc1c2 100644
--- a/kernel/drivers/net/hamradio/6pack.c
+++ b/kernel/drivers/net/hamradio/6pack.c
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
/*
* 6pack.c This module implements the 6pack protocol for kernel-based
* devices like TTY. It interfaces between a raw TTY and the
@@ -34,7 +35,6 @@
#include <linux/ip.h>
#include <linux/tcp.h>
#include <linux/semaphore.h>
-#include <linux/compat.h>
#include <linux/refcount.h>
#define SIXPACK_VERSION "Revision: 0.3.0"
@@ -121,7 +121,7 @@
struct timer_list tx_t;
struct timer_list resync_t;
refcount_t refcnt;
- struct semaphore dead_sem;
+ struct completion dead;
spinlock_t lock;
};
@@ -311,7 +311,6 @@
{
/* Finish setting up the DEVICE info. */
dev->netdev_ops = &sp_netdev_ops;
- dev->needs_free_netdev = true;
dev->mtu = SIXP_MTU;
dev->hard_header_len = AX25_MAX_HEADER_LEN;
dev->header_ops = &ax25_header_ops;
@@ -344,10 +343,10 @@
sp->dev->stats.rx_bytes += count;
- if ((skb = dev_alloc_skb(count)) == NULL)
+ if ((skb = dev_alloc_skb(count + 1)) == NULL)
goto out_mem;
- ptr = skb_put(skb, count);
+ ptr = skb_put(skb, count + 1);
*ptr++ = cmd; /* KISS command */
memcpy(ptr, sp->cooked_buf + 1, count);
@@ -390,7 +389,7 @@
static void sp_put(struct sixpack *sp)
{
if (refcount_dec_and_test(&sp->refcnt))
- up(&sp->dead_sem);
+ complete(&sp->dead);
}
/*
@@ -572,7 +571,7 @@
spin_lock_init(&sp->lock);
refcount_set(&sp->refcnt, 1);
- sema_init(&sp->dead_sem, 0);
+ init_completion(&sp->dead);
/* !!! length of the buffers. MTU is IP MTU, not PACLEN! */
@@ -666,22 +665,24 @@
* we have to wait for all existing users to finish.
*/
if (!refcount_dec_and_test(&sp->refcnt))
- down(&sp->dead_sem);
+ wait_for_completion(&sp->dead);
/* We must stop the queue to avoid potentially scribbling
- * on the free buffers. The sp->dead_sem is not sufficient
+ * on the free buffers. The sp->dead completion is not sufficient
* to protect us from sp->xbuff access.
*/
netif_stop_queue(sp->dev);
+ unregister_netdev(sp->dev);
+
del_timer_sync(&sp->tx_t);
del_timer_sync(&sp->resync_t);
- /* Free all 6pack frame buffers. */
+ /* Free all 6pack frame buffers after unreg. */
kfree(sp->rbuff);
kfree(sp->xbuff);
- unregister_netdev(sp->dev);
+ free_netdev(sp->dev);
}
/* Perform I/O control on an active 6pack channel. */
@@ -747,23 +748,6 @@
return err;
}
-#ifdef CONFIG_COMPAT
-static long sixpack_compat_ioctl(struct tty_struct * tty, struct file * file,
- unsigned int cmd, unsigned long arg)
-{
- switch (cmd) {
- case SIOCGIFNAME:
- case SIOCGIFENCAP:
- case SIOCSIFENCAP:
- case SIOCSIFHWADDR:
- return sixpack_ioctl(tty, file, cmd,
- (unsigned long)compat_ptr(arg));
- }
-
- return -ENOIOCTLCMD;
-}
-#endif
-
static struct tty_ldisc_ops sp_ldisc = {
.owner = THIS_MODULE,
.magic = TTY_LDISC_MAGIC,
@@ -771,9 +755,6 @@
.open = sixpack_open,
.close = sixpack_close,
.ioctl = sixpack_ioctl,
-#ifdef CONFIG_COMPAT
- .compat_ioctl = sixpack_compat_ioctl,
-#endif
.receive_buf = sixpack_receive_buf,
.write_wakeup = sixpack_write_wakeup,
};
--
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