修改led为gpio

hc

2024-10-12 a5969cabbb4660eab42b6ef0412cbbd1200cf14d

 kernel/net/rxrpc/skbuff.c
..
..
@@ -1,12 +1,8 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
1
2
 /* ar-skbuff.c: socket buffer destruction handling
2
3
  *
3
4
  * Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
4
5
  * Written by David Howells (dhowells@redhat.com)
5
- *
6
- * This program is free software; you can redistribute it and/or
7
- * modify it under the terms of the GNU General Public License
8
- * as published by the Free Software Foundation; either version
9
- * 2 of the License, or (at your option) any later version.
10
6
  */
11
7
 
12
8
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
..
..
@@ -18,7 +14,8 @@
18
14
 #include <net/af_rxrpc.h>
19
15
 #include "ar-internal.h"
20
16
 
21
-#define select_skb_count(op) (op >= rxrpc_skb_tx_cleaned ? &rxrpc_n_tx_skbs : &rxrpc_n_rx_skbs)
17
+#define is_tx_skb(skb) (rxrpc_skb(skb)->rx_flags & RXRPC_SKB_TX_BUFFER)
18
+#define select_skb_count(skb) (is_tx_skb(skb) ? &rxrpc_n_tx_skbs : &rxrpc_n_rx_skbs)
22
19
 
23
20
 /*
24
21
  * Note the allocation or reception of a socket buffer.
..
..
@@ -26,8 +23,9 @@
26
23
 void rxrpc_new_skb(struct sk_buff *skb, enum rxrpc_skb_trace op)
27
24
 {
28
25
 	const void *here = __builtin_return_address(0);
29
-	int n = atomic_inc_return(select_skb_count(op));
30
-	trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n, here);
26
+	int n = atomic_inc_return(select_skb_count(skb));
27
+	trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n,
28
+			rxrpc_skb(skb)->rx_flags, here);
31
29
 }
32
30
 
33
31
 /*
..
..
@@ -37,8 +35,9 @@
37
35
 {
38
36
 	const void *here = __builtin_return_address(0);
39
37
 	if (skb) {
40
-		int n = atomic_read(select_skb_count(op));
41
-		trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n, here);
38
+		int n = atomic_read(select_skb_count(skb));
39
+		trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n,
40
+				rxrpc_skb(skb)->rx_flags, here);
42
41
 	}
43
42
 }
44
43
 
..
..
@@ -48,9 +47,20 @@
48
47
 void rxrpc_get_skb(struct sk_buff *skb, enum rxrpc_skb_trace op)
49
48
 {
50
49
 	const void *here = __builtin_return_address(0);
51
-	int n = atomic_inc_return(select_skb_count(op));
52
-	trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n, here);
50
+	int n = atomic_inc_return(select_skb_count(skb));
51
+	trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n,
52
+			rxrpc_skb(skb)->rx_flags, here);
53
53
 	skb_get(skb);
54
+}
55
+
56
+/*
57
+ * Note the dropping of a ref on a socket buffer by the core.
58
+ */
59
+void rxrpc_eaten_skb(struct sk_buff *skb, enum rxrpc_skb_trace op)
60
+{
61
+	const void *here = __builtin_return_address(0);
62
+	int n = atomic_inc_return(&rxrpc_n_rx_skbs);
63
+	trace_rxrpc_skb(skb, op, 0, n, 0, here);
54
64
 }
55
65
 
56
66
 /*
..
..
@@ -61,24 +71,9 @@
61
71
 	const void *here = __builtin_return_address(0);
62
72
 	if (skb) {
63
73
 		int n;
64
-		CHECK_SLAB_OKAY(&skb->users);
65
-		n = atomic_dec_return(select_skb_count(op));
66
-		trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n, here);
67
-		kfree_skb(skb);
68
-	}
69
-}
70
-
71
-/*
72
- * Note the injected loss of a socket buffer.
73
- */
74
-void rxrpc_lose_skb(struct sk_buff *skb, enum rxrpc_skb_trace op)
75
-{
76
-	const void *here = __builtin_return_address(0);
77
-	if (skb) {
78
-		int n;
79
-		CHECK_SLAB_OKAY(&skb->users);
80
-		n = atomic_dec_return(select_skb_count(op));
81
-		trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n, here);
74
+		n = atomic_dec_return(select_skb_count(skb));
75
+		trace_rxrpc_skb(skb, op, refcount_read(&skb->users), n,
76
+				rxrpc_skb(skb)->rx_flags, here);
82
77
 		kfree_skb(skb);
83
78
 	}
84
79
 }
..
..
@@ -91,9 +86,10 @@
91
86
 	const void *here = __builtin_return_address(0);
92
87
 	struct sk_buff *skb;
93
88
 	while ((skb = skb_dequeue((list))) != NULL) {
94
-		int n = atomic_dec_return(select_skb_count(rxrpc_skb_rx_purged));
95
-		trace_rxrpc_skb(skb, rxrpc_skb_rx_purged,
96
-				refcount_read(&skb->users), n, here);
89
+		int n = atomic_dec_return(select_skb_count(skb));
90
+		trace_rxrpc_skb(skb, rxrpc_skb_purged,
91
+				refcount_read(&skb->users), n,
92
+				rxrpc_skb(skb)->rx_flags, here);
97
93
 		kfree_skb(skb);
98
94
 	}
99
95
 }