固定GMAC1 网卡名为 eth3

hc

2024-11-15 a46a1ad097419aeea7350987dd95230f50d90392

 kernel/net/socket.c
..
..
@@ -141,6 +141,95 @@
141
141
 #define sock_show_fdinfo NULL
142
142
 #endif
143
143
 
144
+#ifdef CONFIG_NET_OOB
145
+
146
+static inline bool sock_oob_capable(struct socket *sock)
147
+{
148
+	return sock->sk && sock->sk->oob_data;
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+}
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+
151
+int __weak sock_oob_attach(struct socket *sock)
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+{
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+	return 0;
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+}
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+
156
+void __weak sock_oob_detach(struct socket *sock)
157
+{
158
+}
159
+
160
+int __weak sock_oob_bind(struct socket *sock, struct sockaddr *addr, int len)
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+{
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+	return 0;
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+}
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+
165
+long __weak sock_inband_ioctl_redirect(struct socket *sock,
166
+				unsigned int cmd, unsigned long arg)
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+{
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+	return -ENOTTY;
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+}
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+
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+long __weak sock_oob_ioctl(struct file *file,
172
+			unsigned int cmd, unsigned long arg)
173
+{
174
+	return -ENOTTY;
175
+}
176
+
177
+ssize_t __weak sock_oob_write(struct file *filp,
178
+				const char __user *u_buf, size_t count)
179
+{
180
+	return -EOPNOTSUPP;
181
+}
182
+
183
+ssize_t __weak sock_oob_read(struct file *filp,
184
+			char __user *u_buf, size_t count)
185
+{
186
+	return -EOPNOTSUPP;
187
+}
188
+
189
+__poll_t __weak sock_oob_poll(struct file *filp,
190
+				struct oob_poll_wait *wait)
191
+{
192
+	return -EOPNOTSUPP;
193
+}
194
+
195
+#define compat_sock_oob_ioctl compat_ptr_oob_ioctl
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+
197
+#else	/* !CONFIG_NET_OOB */
198
+
199
+static inline bool sock_oob_capable(struct socket *sock)
200
+{
201
+	return false;
202
+}
203
+
204
+static inline int sock_oob_attach(struct socket *sock)
205
+{
206
+	return 0;
207
+}
208
+
209
+static inline void sock_oob_detach(struct socket *sock)
210
+{
211
+}
212
+
213
+static int sock_oob_bind(struct socket *sock,
214
+			struct sockaddr *addr, int len)
215
+{
216
+	return 0;
217
+}
218
+
219
+static inline long sock_inband_ioctl_redirect(struct socket *sock,
220
+					unsigned int cmd, unsigned long arg)
221
+{
222
+	return -ENOTTY;
223
+}
224
+
225
+#define sock_oob_ioctl		NULL
226
+#define sock_oob_write		NULL
227
+#define sock_oob_read		NULL
228
+#define sock_oob_poll		NULL
229
+#define compat_sock_oob_ioctl	NULL
230
+
231
+#endif	/* !CONFIG_NET_OOB */
232
+
144
233
 /*
145
234
  *	Socket files have a set of 'special' operations as well as the generic file ones. These don't appear
146
235
  *	in the operation structures but are done directly via the socketcall() multiplexor.
..
..
@@ -153,8 +242,13 @@
153
242
 	.write_iter =	sock_write_iter,
154
243
 	.poll =		sock_poll,
155
244
 	.unlocked_ioctl = sock_ioctl,
245
+	.oob_ioctl =	sock_oob_ioctl,
246
+	.oob_write =	sock_oob_write,
247
+	.oob_read =	sock_oob_read,
248
+	.oob_poll =	sock_oob_poll,
156
249
 #ifdef CONFIG_COMPAT
157
250
 	.compat_ioctl = compat_sock_ioctl,
251
+	.compat_oob_ioctl = compat_sock_oob_ioctl,
158
252
 #endif
159
253
 	.mmap =		sock_mmap,
160
254
 	.release =	sock_close,
..
..
@@ -427,7 +521,7 @@
427
521
 static int sock_map_fd(struct socket *sock, int flags)
428
522
 {
429
523
 	struct file *newfile;
430
-	int fd = get_unused_fd_flags(flags);
524
+	int fd = get_unused_fd_flags(flags), ret;
431
525
 	if (unlikely(fd < 0)) {
432
526
 		sock_release(sock);
433
527
 		return fd;
..
..
@@ -435,6 +529,14 @@
435
529
 
436
530
 	newfile = sock_alloc_file(sock, flags, NULL);
437
531
 	if (!IS_ERR(newfile)) {
532
+		if (IS_ENABLED(CONFIG_NET_OOB) && (flags & SOCK_OOB)) {
533
+			ret = sock_oob_attach(sock);
534
+			if (ret < 0) {
535
+				put_unused_fd(fd);
536
+				sock_release(sock);
537
+				return ret;
538
+			}
539
+		}
438
540
 		fd_install(fd, newfile);
439
541
 		return fd;
440
542
 	}
..
..
@@ -589,6 +691,9 @@
589
691
 
590
692
 static void __sock_release(struct socket *sock, struct inode *inode)
591
693
 {
694
+	if (sock_oob_capable(sock))
695
+		sock_oob_detach(sock);
696
+
592
697
 	if (sock->ops) {
593
698
 		struct module *owner = sock->ops->owner;
594
699
 
..
..
@@ -1185,6 +1290,11 @@
1185
1290
 						   false);
1186
1291
 			break;
1187
1292
 		default:
1293
+			if (sock_oob_capable(sock)) {
1294
+				err = sock_inband_ioctl_redirect(sock, cmd, arg);
1295
+				if (!err || err != -ENOIOCTLCMD)
1296
+					break;
1297
+			}
1188
1298
 			err = sock_do_ioctl(net, sock, cmd, arg);
1189
1299
 			break;
1190
1300
 		}
..
..
@@ -1498,10 +1608,18 @@
1498
1608
 	BUILD_BUG_ON((SOCK_MAX | SOCK_TYPE_MASK) != SOCK_TYPE_MASK);
1499
1609
 	BUILD_BUG_ON(SOCK_CLOEXEC & SOCK_TYPE_MASK);
1500
1610
 	BUILD_BUG_ON(SOCK_NONBLOCK & SOCK_TYPE_MASK);
1611
+	BUILD_BUG_ON(SOCK_OOB & SOCK_TYPE_MASK);
1501
1612
 
1502
1613
 	flags = type & ~SOCK_TYPE_MASK;
1503
-	if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK))
1614
+	if (flags & ~(SOCK_CLOEXEC | SOCK_NONBLOCK | SOCK_OOB))
1504
1615
 		return -EINVAL;
1616
+	/*
1617
+	 * Not every protocol family supports out-of-band operations,
1618
+	 * however PF_OOB certainly does: force SOCK_OOB in, so that
1619
+	 * sock_oob_attach() runs for this socket.
1620
+	 */
1621
+	if (IS_ENABLED(CONFIG_NET_OOB) && family == AF_OOB)
1622
+		flags |= SOCK_OOB;
1505
1623
 	type &= SOCK_TYPE_MASK;
1506
1624
 
1507
1625
 	if (SOCK_NONBLOCK != O_NONBLOCK && (flags & SOCK_NONBLOCK))
..
..
@@ -1511,7 +1629,7 @@
1511
1629
 	if (retval < 0)
1512
1630
 		return retval;
1513
1631
 
1514
-	return sock_map_fd(sock, flags & (O_CLOEXEC | O_NONBLOCK));
1632
+	return sock_map_fd(sock, flags & (O_CLOEXEC | O_NONBLOCK | O_OOB));
1515
1633
 }
1516
1634
 
1517
1635
 SYSCALL_DEFINE3(socket, int, family, int, type, int, protocol)
..
..
@@ -1642,6 +1760,9 @@
1642
1760
 			err = security_socket_bind(sock,
1643
1761
 						   (struct sockaddr *)&address,
1644
1762
 						   addrlen);
1763
+			if (sock_oob_capable(sock) && !err)
1764
+				err = sock_oob_bind(sock, (struct sockaddr *)
1765
+						&address, addrlen);
1645
1766
 			if (!err)
1646
1767
 				err = sock->ops->bind(sock,
1647
1768
 						      (struct sockaddr *)