修改4g拨号为QMI,需要在系统里后台执行quectel-CM

hc

2024-10-22 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5

 kernel/net/dccp/ipv6.c
..
..
@@ -1,3 +1,4 @@
1
+// SPDX-License-Identifier: GPL-2.0-or-later
1
2
 /*
2
3
  *	DCCP over IPv6
3
4
  *	Linux INET6 implementation
..
..
@@ -5,11 +6,6 @@
5
6
  *	Based on net/dccp6/ipv6.c
6
7
  *
7
8
  *	Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
8
- *
9
- *	This program is free software; you can redistribute it and/or
10
- *      modify it under the terms of the GNU General Public License
11
- *      as published by the Free Software Foundation; either version
12
- *      2 of the License, or (at your option) any later version.
13
9
  */
14
10
 
15
11
 #include <linux/module.h>
..
..
@@ -68,10 +64,10 @@
68
64
 
69
65
 }
70
66
 
71
-static void dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
67
+static int dccp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
72
68
 			u8 type, u8 code, int offset, __be32 info)
73
69
 {
74
-	const struct ipv6hdr *hdr = (const struct ipv6hdr *)skb->data;
70
+	const struct ipv6hdr *hdr;
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71
 	const struct dccp_hdr *dh;
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72
 	struct dccp_sock *dp;
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73
 	struct ipv6_pinfo *np;
..
..
@@ -80,12 +76,12 @@
80
76
 	__u64 seq;
81
77
 	struct net *net = dev_net(skb->dev);
82
78
 
83
-	/* Only need dccph_dport & dccph_sport which are the first
84
-	 * 4 bytes in dccp header.
85
-	 * Our caller (icmpv6_notify()) already pulled 8 bytes for us.
86
-	 */
87
-	BUILD_BUG_ON(offsetofend(struct dccp_hdr, dccph_sport) > 8);
88
-	BUILD_BUG_ON(offsetofend(struct dccp_hdr, dccph_dport) > 8);
79
+	if (!pskb_may_pull(skb, offset + sizeof(*dh)))
80
+		return -EINVAL;
81
+	dh = (struct dccp_hdr *)(skb->data + offset);
82
+	if (!pskb_may_pull(skb, offset + __dccp_basic_hdr_len(dh)))
83
+		return -EINVAL;
84
+	hdr = (const struct ipv6hdr *)skb->data;
89
85
 	dh = (struct dccp_hdr *)(skb->data + offset);
90
86
 
91
87
 	sk = __inet6_lookup_established(net, &dccp_hashinfo,
..
..
@@ -96,16 +92,18 @@
96
92
 	if (!sk) {
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 		__ICMP6_INC_STATS(net, __in6_dev_get(skb->dev),
98
94
 				  ICMP6_MIB_INERRORS);
99
-		return;
95
+		return -ENOENT;
100
96
 	}
101
97
 
102
98
 	if (sk->sk_state == DCCP_TIME_WAIT) {
103
99
 		inet_twsk_put(inet_twsk(sk));
104
-		return;
100
+		return 0;
105
101
 	}
106
102
 	seq = dccp_hdr_seq(dh);
107
-	if (sk->sk_state == DCCP_NEW_SYN_RECV)
108
-		return dccp_req_err(sk, seq);
103
+	if (sk->sk_state == DCCP_NEW_SYN_RECV) {
104
+		dccp_req_err(sk, seq);
105
+		return 0;
106
+	}
109
107
 
110
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 	bh_lock_sock(sk);
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109
 	if (sock_owned_by_user(sk))
..
..
@@ -183,6 +181,7 @@
183
181
 out:
184
182
 	bh_unlock_sock(sk);
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 	sock_put(sk);
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+	return 0;
186
185
 }
187
186
 
188
187
 
..
..
@@ -204,7 +203,7 @@
204
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 	fl6.flowi6_oif = ireq->ir_iif;
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 	fl6.fl6_dport = ireq->ir_rmt_port;
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 	fl6.fl6_sport = htons(ireq->ir_num);
207
-	security_req_classify_flow(req, flowi6_to_flowi(&fl6));
206
+	security_req_classify_flow(req, flowi6_to_flowi_common(&fl6));
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207
 
209
208
 
210
209
 	rcu_read_lock();
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..
@@ -231,7 +230,8 @@
231
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 		opt = ireq->ipv6_opt;
232
231
 		if (!opt)
233
232
 			opt = rcu_dereference(np->opt);
234
-		err = ip6_xmit(sk, skb, &fl6, sk->sk_mark, opt, np->tclass);
233
+		err = ip6_xmit(sk, skb, &fl6, sk->sk_mark, opt, np->tclass,
234
+			       sk->sk_priority);
235
235
 		rcu_read_unlock();
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236
 		err = net_xmit_eval(err);
237
237
 	}
..
..
@@ -279,13 +279,13 @@
279
279
 	fl6.flowi6_oif = inet6_iif(rxskb);
280
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 	fl6.fl6_dport = dccp_hdr(skb)->dccph_dport;
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 	fl6.fl6_sport = dccp_hdr(skb)->dccph_sport;
282
-	security_skb_classify_flow(rxskb, flowi6_to_flowi(&fl6));
282
+	security_skb_classify_flow(rxskb, flowi6_to_flowi_common(&fl6));
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283
 
284
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 	/* sk = NULL, but it is safe for now. RST socket required. */
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 	dst = ip6_dst_lookup_flow(sock_net(ctl_sk), ctl_sk, &fl6, NULL);
286
286
 	if (!IS_ERR(dst)) {
287
287
 		skb_dst_set(skb, dst);
288
-		ip6_xmit(ctl_sk, skb, &fl6, 0, NULL, 0);
288
+		ip6_xmit(ctl_sk, skb, &fl6, 0, NULL, 0, 0);
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289
 		DCCP_INC_STATS(DCCP_MIB_OUTSEGS);
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 		DCCP_INC_STATS(DCCP_MIB_OUTRSTS);
291
291
 		return;
..
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@@ -538,14 +538,12 @@
538
538
 		dccp_done(newsk);
539
539
 		goto out;
540
540
 	}
541
-	*own_req = inet_ehash_nolisten(newsk, req_to_sk(req_unhash));
541
+	*own_req = inet_ehash_nolisten(newsk, req_to_sk(req_unhash), NULL);
542
542
 	/* Clone pktoptions received with SYN, if we own the req */
543
543
 	if (*own_req && ireq->pktopts) {
544
-		newnp->pktoptions = skb_clone(ireq->pktopts, GFP_ATOMIC);
544
+		newnp->pktoptions = skb_clone_and_charge_r(ireq->pktopts, newsk);
545
545
 		consume_skb(ireq->pktopts);
546
546
 		ireq->pktopts = NULL;
547
-		if (newnp->pktoptions)
548
-			skb_set_owner_r(newnp->pktoptions, newsk);
549
547
 	}
550
548
 
551
549
 	return newsk;
..
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@@ -605,7 +603,7 @@
605
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 					       --ANK (980728)
606
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 	 */
607
605
 	if (np->rxopt.all)
608
-		opt_skb = skb_clone(skb, GFP_ATOMIC);
606
+		opt_skb = skb_clone_and_charge_r(skb, sk);
609
607
 
610
608
 	if (sk->sk_state == DCCP_OPEN) { /* Fast path */
611
609
 		if (dccp_rcv_established(sk, skb, dccp_hdr(skb), skb->len))
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@@ -669,7 +667,6 @@
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 			np->flow_label = ip6_flowlabel(ipv6_hdr(opt_skb));
670
668
 		if (ipv6_opt_accepted(sk, opt_skb,
671
669
 				      &DCCP_SKB_CB(opt_skb)->header.h6)) {
672
-			skb_set_owner_r(opt_skb, sk);
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 			memmove(IP6CB(opt_skb),
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 				&DCCP_SKB_CB(opt_skb)->header.h6,
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 				sizeof(struct inet6_skb_parm));
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@@ -836,7 +833,7 @@
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833
 		if (fl6.flowlabel & IPV6_FLOWLABEL_MASK) {
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 			struct ip6_flowlabel *flowlabel;
838
835
 			flowlabel = fl6_sock_lookup(sk, fl6.flowlabel);
839
-			if (flowlabel == NULL)
836
+			if (IS_ERR(flowlabel))
840
837
 				return -EINVAL;
841
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 			fl6_sock_release(flowlabel);
842
839
 		}
..
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@@ -912,7 +909,7 @@
912
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 	fl6.flowi6_oif = sk->sk_bound_dev_if;
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910
 	fl6.fl6_dport = usin->sin6_port;
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911
 	fl6.fl6_sport = inet->inet_sport;
915
-	security_sk_classify_flow(sk, flowi6_to_flowi(&fl6));
912
+	security_sk_classify_flow(sk, flowi6_to_flowi_common(&fl6));
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913
 
917
914
 	opt = rcu_dereference_protected(np->opt, lockdep_sock_is_held(sk));
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915
 	final_p = fl6_update_dst(&fl6, opt, &final);
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@@ -957,6 +954,8 @@
957
954
 
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 late_failure:
959
956
 	dccp_set_state(sk, DCCP_CLOSED);
957
+	if (!(sk->sk_userlocks & SOCK_BINDADDR_LOCK))
958
+		inet_reset_saddr(sk);
960
959
 	__sk_dst_reset(sk);
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960
 failure:
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 	inet->inet_dport = 0;
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@@ -975,10 +974,6 @@
975
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 	.getsockopt	   = ipv6_getsockopt,
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 	.addr2sockaddr	   = inet6_csk_addr2sockaddr,
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 	.sockaddr_len	   = sizeof(struct sockaddr_in6),
978
-#ifdef CONFIG_COMPAT
979
-	.compat_setsockopt = compat_ipv6_setsockopt,
980
-	.compat_getsockopt = compat_ipv6_getsockopt,
981
-#endif
982
977
 };
983
978
 
984
979
 /*
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..
@@ -995,11 +990,13 @@
995
990
 	.getsockopt	   = ipv6_getsockopt,
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991
 	.addr2sockaddr	   = inet6_csk_addr2sockaddr,
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992
 	.sockaddr_len	   = sizeof(struct sockaddr_in6),
998
-#ifdef CONFIG_COMPAT
999
-	.compat_setsockopt = compat_ipv6_setsockopt,
1000
-	.compat_getsockopt = compat_ipv6_getsockopt,
1001
-#endif
1002
993
 };
994
+
995
+static void dccp_v6_sk_destruct(struct sock *sk)
996
+{
997
+	dccp_destruct_common(sk);
998
+	inet6_sock_destruct(sk);
999
+}
1003
1000
 
1004
1001
 /* NOTE: A lot of things set to zero explicitly by call to
1005
1002
  *       sk_alloc() so need not be done here.
..
..
@@ -1013,15 +1010,10 @@
1013
1010
 		if (unlikely(!dccp_v6_ctl_sock_initialized))
1014
1011
 			dccp_v6_ctl_sock_initialized = 1;
1015
1012
 		inet_csk(sk)->icsk_af_ops = &dccp_ipv6_af_ops;
1013
+		sk->sk_destruct = dccp_v6_sk_destruct;
1016
1014
 	}
1017
1015
 
1018
1016
 	return err;
1019
-}
1020
-
1021
-static void dccp_v6_destroy_sock(struct sock *sk)
1022
-{
1023
-	dccp_destroy_sock(sk);
1024
-	inet6_destroy_sock(sk);
1025
1017
 }
1026
1018
 
1027
1019
 static struct timewait_sock_ops dccp6_timewait_sock_ops = {
..
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@@ -1046,7 +1038,7 @@
1046
1038
 	.accept		   = inet_csk_accept,
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1039
 	.get_port	   = inet_csk_get_port,
1048
1040
 	.shutdown	   = dccp_shutdown,
1049
-	.destroy	   = dccp_v6_destroy_sock,
1041
+	.destroy	   = dccp_destroy_sock,
1050
1042
 	.orphan_count	   = &dccp_orphan_count,
1051
1043
 	.max_header	   = MAX_DCCP_HEADER,
1052
1044
 	.obj_size	   = sizeof(struct dccp6_sock),
..
..
@@ -1054,10 +1046,6 @@
1054
1046
 	.rsk_prot	   = &dccp6_request_sock_ops,
1055
1047
 	.twsk_prot	   = &dccp6_timewait_sock_ops,
1056
1048
 	.h.hashinfo	   = &dccp_hashinfo,
1057
-#ifdef CONFIG_COMPAT
1058
-	.compat_setsockopt = compat_dccp_setsockopt,
1059
-	.compat_getsockopt = compat_dccp_getsockopt,
1060
-#endif
1061
1049
 };
1062
1050
 
1063
1051
 static const struct inet6_protocol dccp_v6_protocol = {
..
..
@@ -1077,6 +1065,7 @@
1077
1065
 	.getname	   = inet6_getname,
1078
1066
 	.poll		   = dccp_poll,
1079
1067
 	.ioctl		   = inet6_ioctl,
1068
+	.gettstamp	   = sock_gettstamp,
1080
1069
 	.listen		   = inet_dccp_listen,
1081
1070
 	.shutdown	   = inet_shutdown,
1082
1071
 	.setsockopt	   = sock_common_setsockopt,
..
..
@@ -1086,8 +1075,7 @@
1086
1075
 	.mmap		   = sock_no_mmap,
1087
1076
 	.sendpage	   = sock_no_sendpage,
1088
1077
 #ifdef CONFIG_COMPAT
1089
-	.compat_setsockopt = compat_sock_common_setsockopt,
1090
-	.compat_getsockopt = compat_sock_common_getsockopt,
1078
+	.compat_ioctl	   = inet6_compat_ioctl,
1091
1079
 #endif
1092
1080
 };
1093
1081