From a36159eec6ca17402b0e146b86efaf76568dc353 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 20 Sep 2024 01:41:23 +0000
Subject: [PATCH] 重命名 AX88772C_eeprom/asix.c 为 asix_mac.c
---
kernel/net/llc/af_llc.c | 69 +++++++++++++++++++++-------------
1 files changed, 42 insertions(+), 27 deletions(-)
diff --git a/kernel/net/llc/af_llc.c b/kernel/net/llc/af_llc.c
index 89a3dc7..01e2669 100644
--- a/kernel/net/llc/af_llc.c
+++ b/kernel/net/llc/af_llc.c
@@ -47,7 +47,7 @@
#if 0
#define dprintk(args...) printk(KERN_DEBUG args)
#else
-#define dprintk(args...)
+#define dprintk(args...) do {} while (0)
#endif
/* Maybe we'll add some more in the future. */
@@ -276,6 +276,7 @@
{
struct sock *sk = sock->sk;
struct llc_sock *llc = llc_sk(sk);
+ struct net_device *dev = NULL;
struct llc_sap *sap;
int rc = -EINVAL;
@@ -287,14 +288,14 @@
goto out;
rc = -ENODEV;
if (sk->sk_bound_dev_if) {
- llc->dev = dev_get_by_index(&init_net, sk->sk_bound_dev_if);
- if (llc->dev && addr->sllc_arphrd != llc->dev->type) {
- dev_put(llc->dev);
- llc->dev = NULL;
+ dev = dev_get_by_index(&init_net, sk->sk_bound_dev_if);
+ if (dev && addr->sllc_arphrd != dev->type) {
+ dev_put(dev);
+ dev = NULL;
}
} else
- llc->dev = dev_getfirstbyhwtype(&init_net, addr->sllc_arphrd);
- if (!llc->dev)
+ dev = dev_getfirstbyhwtype(&init_net, addr->sllc_arphrd);
+ if (!dev)
goto out;
rc = -EUSERS;
llc->laddr.lsap = llc_ui_autoport();
@@ -304,6 +305,11 @@
sap = llc_sap_open(llc->laddr.lsap, NULL);
if (!sap)
goto out;
+
+ /* Note: We do not expect errors from this point. */
+ llc->dev = dev;
+ dev = NULL;
+
memcpy(llc->laddr.mac, llc->dev->dev_addr, IFHWADDRLEN);
memcpy(&llc->addr, addr, sizeof(llc->addr));
/* assign new connection to its SAP */
@@ -311,6 +317,7 @@
sock_reset_flag(sk, SOCK_ZAPPED);
rc = 0;
out:
+ dev_put(dev);
return rc;
}
@@ -333,10 +340,9 @@
struct sockaddr_llc *addr = (struct sockaddr_llc *)uaddr;
struct sock *sk = sock->sk;
struct llc_sock *llc = llc_sk(sk);
+ struct net_device *dev = NULL;
struct llc_sap *sap;
int rc = -EINVAL;
-
- dprintk("%s: binding %02X\n", __func__, addr->sllc_sap);
lock_sock(sk);
if (unlikely(!sock_flag(sk, SOCK_ZAPPED) || addrlen != sizeof(*addr)))
@@ -346,28 +352,30 @@
addr->sllc_arphrd = ARPHRD_ETHER;
if (unlikely(addr->sllc_family != AF_LLC || addr->sllc_arphrd != ARPHRD_ETHER))
goto out;
+ dprintk("%s: binding %02X\n", __func__, addr->sllc_sap);
rc = -ENODEV;
rcu_read_lock();
if (sk->sk_bound_dev_if) {
- llc->dev = dev_get_by_index_rcu(&init_net, sk->sk_bound_dev_if);
- if (llc->dev) {
+ dev = dev_get_by_index_rcu(&init_net, sk->sk_bound_dev_if);
+ if (dev) {
if (is_zero_ether_addr(addr->sllc_mac))
- memcpy(addr->sllc_mac, llc->dev->dev_addr,
+ memcpy(addr->sllc_mac, dev->dev_addr,
IFHWADDRLEN);
- if (addr->sllc_arphrd != llc->dev->type ||
+ if (addr->sllc_arphrd != dev->type ||
!ether_addr_equal(addr->sllc_mac,
- llc->dev->dev_addr)) {
+ dev->dev_addr)) {
rc = -EINVAL;
- llc->dev = NULL;
+ dev = NULL;
}
}
- } else
- llc->dev = dev_getbyhwaddr_rcu(&init_net, addr->sllc_arphrd,
+ } else {
+ dev = dev_getbyhwaddr_rcu(&init_net, addr->sllc_arphrd,
addr->sllc_mac);
- if (llc->dev)
- dev_hold(llc->dev);
+ }
+ if (dev)
+ dev_hold(dev);
rcu_read_unlock();
- if (!llc->dev)
+ if (!dev)
goto out;
if (!addr->sllc_sap) {
rc = -EUSERS;
@@ -400,6 +408,11 @@
goto out_put;
}
}
+
+ /* Note: We do not expect errors from this point. */
+ llc->dev = dev;
+ dev = NULL;
+
llc->laddr.lsap = addr->sllc_sap;
memcpy(llc->laddr.mac, addr->sllc_mac, IFHWADDRLEN);
memcpy(&llc->addr, addr, sizeof(llc->addr));
@@ -410,6 +423,7 @@
out_put:
llc_sap_put(sap);
out:
+ dev_put(dev);
release_sock(sk);
return rc;
}
@@ -568,7 +582,8 @@
add_wait_queue(sk_sleep(sk), &wait);
while (1) {
- if (sk_wait_event(sk, &timeout, sk->sk_state == TCP_CLOSE, &wait))
+ if (sk_wait_event(sk, &timeout,
+ READ_ONCE(sk->sk_state) == TCP_CLOSE, &wait))
break;
rc = -ERESTARTSYS;
if (signal_pending(current))
@@ -588,7 +603,8 @@
add_wait_queue(sk_sleep(sk), &wait);
while (1) {
- if (sk_wait_event(sk, &timeout, sk->sk_state != TCP_SYN_SENT, &wait))
+ if (sk_wait_event(sk, &timeout,
+ READ_ONCE(sk->sk_state) != TCP_SYN_SENT, &wait))
break;
if (signal_pending(current) || !timeout)
break;
@@ -607,7 +623,7 @@
while (1) {
rc = 0;
if (sk_wait_event(sk, &timeout,
- (sk->sk_shutdown & RCV_SHUTDOWN) ||
+ (READ_ONCE(sk->sk_shutdown) & RCV_SHUTDOWN) ||
(!llc_data_accept_state(llc->state) &&
!llc->remote_busy_flag &&
!llc->p_flag), &wait))
@@ -718,7 +734,7 @@
/* put original socket back into a clean listen state. */
sk->sk_state = TCP_LISTEN;
- sk->sk_ack_backlog--;
+ sk_acceptq_removed(sk);
dprintk("%s: ok success on %02X, client on %02X\n", __func__,
llc_sk(sk)->addr.sllc_sap, newllc->daddr.lsap);
frees:
@@ -993,7 +1009,6 @@
* llc_ui_getname - return the address info of a socket
* @sock: Socket to get address of.
* @uaddr: Address structure to return information.
- * @uaddrlen: Length of address structure.
* @peer: Does user want local or remote address information.
*
* Return the address information of a socket.
@@ -1063,7 +1078,7 @@
* Set various connection specific parameters.
*/
static int llc_ui_setsockopt(struct socket *sock, int level, int optname,
- char __user *optval, unsigned int optlen)
+ sockptr_t optval, unsigned int optlen)
{
struct sock *sk = sock->sk;
struct llc_sock *llc = llc_sk(sk);
@@ -1073,7 +1088,7 @@
lock_sock(sk);
if (unlikely(level != SOL_LLC || optlen != sizeof(int)))
goto out;
- rc = get_user(opt, (int __user *)optval);
+ rc = copy_from_sockptr(&opt, optval, sizeof(opt));
if (rc)
goto out;
rc = -EINVAL;
--
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