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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/net/atm/common.c
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..
@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-only
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 /* net/atm/common.c - ATM sockets (common part for PVC and SVC) */
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3
 
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 /* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
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@@ -176,18 +177,18 @@
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177
 
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 	set_bit(ATM_VF_CLOSE, &vcc->flags);
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 	clear_bit(ATM_VF_READY, &vcc->flags);
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-	if (vcc->dev) {
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-		if (vcc->dev->ops->close)
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-			vcc->dev->ops->close(vcc);
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-		if (vcc->push)
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-			vcc->push(vcc, NULL); /* atmarpd has no push */
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-		module_put(vcc->owner);
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+	if (vcc->dev && vcc->dev->ops->close)
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+		vcc->dev->ops->close(vcc);
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+	if (vcc->push)
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+		vcc->push(vcc, NULL); /* atmarpd has no push */
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+	module_put(vcc->owner);
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185
 
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-		while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
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-			atm_return(vcc, skb->truesize);
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-			kfree_skb(skb);
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-		}
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+	while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
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+		atm_return(vcc, skb->truesize);
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+		kfree_skb(skb);
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+	}
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190
 
191
+	if (vcc->dev && vcc->dev->ops->owner) {
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 		module_put(vcc->dev->ops->owner);
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 		atm_dev_put(vcc->dev);
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 	}
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@@ -296,7 +297,7 @@
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 		break;
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 	default:
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 		pr_warn("AAL problems ... (%d)\n", aal);
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-		/* fall through */
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+		fallthrough;
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 	case ATM_AAL5:
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 		max_sdu = ATM_MAX_AAL5_PDU;
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 	}
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@@ -416,7 +417,7 @@
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 	case ATM_NO_AAL:
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 		/* ATM_AAL5 is also used in the "0 for default" case */
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 		vcc->qos.aal = ATM_AAL5;
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-		/* fall through */
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+		fallthrough;
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 	case ATM_AAL5:
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 		error = atm_init_aal5(vcc);
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 		vcc->stats = &dev->stats.aal5;
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@@ -744,7 +745,7 @@
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745
 }
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746
 
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 int vcc_setsockopt(struct socket *sock, int level, int optname,
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-		   char __user *optval, unsigned int optlen)
748
+		   sockptr_t optval, unsigned int optlen)
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 {
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 	struct atm_vcc *vcc;
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 	unsigned long value;
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@@ -759,7 +760,7 @@
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 	{
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 		struct atm_qos qos;
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762
 
762
-		if (copy_from_user(&qos, optval, sizeof(qos)))
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+		if (copy_from_sockptr(&qos, optval, sizeof(qos)))
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764
 			return -EFAULT;
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 		error = check_qos(&qos);
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766
 		if (error)
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@@ -773,7 +774,7 @@
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 		return 0;
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 	}
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 	case SO_SETCLP:
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-		if (get_user(value, (unsigned long __user *)optval))
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+		if (copy_from_sockptr(&value, optval, sizeof(value)))
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 			return -EFAULT;
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 		if (value)
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 			vcc->atm_options |= ATM_ATMOPT_CLP;
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@@ -781,13 +782,8 @@
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 			vcc->atm_options &= ~ATM_ATMOPT_CLP;
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 		return 0;
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784
 	default:
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-		if (level == SOL_SOCKET)
785
-			return -EINVAL;
786
-		break;
787
-	}
788
-	if (!vcc->dev || !vcc->dev->ops->setsockopt)
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 		return -EINVAL;
790
-	return vcc->dev->ops->setsockopt(vcc, level, optname, optval, optlen);
786
+	}
791
787
 }
792
788
 
793
789
 int vcc_getsockopt(struct socket *sock, int level, int optname,
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..
@@ -825,13 +821,8 @@
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821
 		return copy_to_user(optval, &pvc, sizeof(pvc)) ? -EFAULT : 0;
826
822
 	}
827
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 	default:
828
-		if (level == SOL_SOCKET)
829
-			return -EINVAL;
830
-		break;
831
-	}
832
-	if (!vcc->dev || !vcc->dev->ops->getsockopt)
833
824
 		return -EINVAL;
834
-	return vcc->dev->ops->getsockopt(vcc, level, optname, optval, len);
825
+	}
835
826
 }
836
827
 
837
828
 int register_atmdevice_notifier(struct notifier_block *nb)