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2023-12-11 d2ccde1c8e90d38cee87a1b0309ad2827f3fd30d 
 kernel/include/net/sctp/structs.h
....@@ -1,3 +1,4 @@
1
+/* SPDX-License-Identifier: GPL-2.0-or-later */
12 /* SCTP kernel implementation
23  * (C) Copyright IBM Corp. 2001, 2004
34  * Copyright (c) 1999-2000 Cisco, Inc.
....@@ -5,22 +6,6 @@
56  * Copyright (c) 2001 Intel Corp.
67  *
78  * This file is part of the SCTP kernel implementation
8
- *
9
- * This SCTP implementation is free software;
10
- * you can redistribute it and/or modify it under the terms of
11
- * the GNU General Public License as published by
12
- * the Free Software Foundation; either version 2, or (at your option)
13
- * any later version.
14
- *
15
- * This SCTP implementation is distributed in the hope that it
16
- * will be useful, but WITHOUT ANY WARRANTY; without even the implied
17
- *		   ************************
18
- * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
19
- * See the GNU General Public License for more details.
20
- *
21
- * You should have received a copy of the GNU General Public License
22
- * along with GNU CC; see the file COPYING.  If not, see
23
- * <http://www.gnu.org/licenses/>.
249  *
2510  * Please send any bug reports or fixes you make to the
2611  * email addresses:
....@@ -48,6 +33,7 @@
4833 #define __sctp_structs_h__
4934 
5035 #include <linux/ktime.h>
36
+#include <linux/generic-radix-tree.h>
5137 #include <linux/rhashtable-types.h>
5238 #include <linux/socket.h>	/* linux/in.h needs this!!    */
5339 #include <linux/in.h>		/* We get struct sockaddr_in. */
....@@ -57,7 +43,6 @@
5743 #include <linux/atomic.h>		/* This gets us atomic counters.  */
5844 #include <linux/skbuff.h>	/* We need sk_buff_head. */
5945 #include <linux/workqueue.h>	/* We need tq_struct.	 */
60
-#include <linux/flex_array.h>	/* We need flex_array.   */
6146 #include <linux/sctp.h>		/* We need sctp* header structs.  */
6247 #include <net/sctp/auth.h>	/* We need auth specific structs */
6348 #include <net/ip.h>		/* For inet_skb_parm */
....@@ -96,7 +81,9 @@
9681 
9782 struct sctp_bind_bucket {
9883 	unsigned short	port;
99
-	unsigned short	fastreuse;
84
+	signed char	fastreuse;
85
+	signed char	fastreuseport;
86
+	kuid_t		fastuid;
10087 	struct hlist_node	node;
10188 	struct hlist_head	owner;
10289 	struct net	*net;
....@@ -197,6 +184,9 @@
197184 	__u32 flowlabel;
198185 	__u8  dscp;
199186 
187
+	__u16 pf_retrans;
188
+	__u16 ps_retrans;
189
+
200190 	/* The initial Path MTU to use for new associations. */
201191 	__u32 pathmtu;
202192 
....@@ -207,6 +197,8 @@
207197 	/* Flags controlling Heartbeat, SACK delay, and Path MTU Discovery. */
208198 	__u32 param_flags;
209199 
200
+	__u32 default_ss;
201
+
210202 	struct sctp_rtoinfo rtoinfo;
211203 	struct sctp_paddrparams paddrparam;
212204 	struct sctp_assocparams assocparams;
....@@ -215,7 +207,7 @@
215207 	 * These two structures must be grouped together for the usercopy
216208 	 * whitelist region.
217209 	 */
218
-	struct sctp_event_subscribe subscribe;
210
+	__u16 subscribe;
219211 	struct sctp_initmsg initmsg;
220212 
221213 	int user_frag;
....@@ -224,22 +216,24 @@
224216 	__u32 adaptation_ind;
225217 	__u32 pd_point;
226218 	__u16	nodelay:1,
219
+		pf_expose:2,
227220 		reuse:1,
228221 		disable_fragments:1,
229222 		v4mapped:1,
230223 		frag_interleave:1,
231
-		strm_interleave:1,
232224 		recvrcvinfo:1,
233225 		recvnxtinfo:1,
234226 		data_ready_signalled:1;
235227 
236228 	atomic_t pd_mode;
229
+
230
+	/* Fields after this point will be skipped on copies, like on accept
231
+	 * and peeloff operations
232
+	 */
233
+
237234 	/* Receive to here while partial delivery is in effect. */
238235 	struct sk_buff_head pd_lobby;
239236 
240
-	/* These must be the last fields, as they will skipped on copies,
241
-	 * like on accept and peeloff operations
242
-	 */
243237 	struct list_head auto_asconf_list;
244238 	int do_auto_asconf;
245239 };
....@@ -334,7 +328,7 @@
334328 	 * the association TCB is re-constructed from the cookie.
335329 	 */
336330 	__u32 raw_addr_list_len;
337
-	struct sctp_init_chunk peer_init[0];
331
+	struct sctp_init_chunk peer_init[];
338332 };
339333 
340334 
....@@ -439,19 +433,9 @@
439433 	int		(*setsockopt)	(struct sock *sk,
440434 					 int level,
441435 					 int optname,
442
-					 char __user *optval,
436
+					 sockptr_t optval,
443437 					 unsigned int optlen);
444438 	int		(*getsockopt)	(struct sock *sk,
445
-					 int level,
446
-					 int optname,
447
-					 char __user *optval,
448
-					 int __user *optlen);
449
-	int		(*compat_setsockopt)	(struct sock *sk,
450
-					 int level,
451
-					 int optname,
452
-					 char __user *optval,
453
-					 unsigned int optlen);
454
-	int		(*compat_getsockopt)	(struct sock *sk,
455439 					 int level,
456440 					 int optname,
457441 					 char __user *optval,
....@@ -906,7 +890,9 @@
906890 	 * and will be initialized from the assocs value.  This can be changed
907891 	 * using the SCTP_PEER_ADDR_THLDS socket option
908892 	 */
909
-	int pf_retrans;
893
+	__u16 pf_retrans;
894
+	/* Used for primary path switchover. */
895
+	__u16 ps_retrans;
910896 	/* PMTU	      : The current known path MTU.  */
911897 	__u32 pathmtu;
912898 
....@@ -1190,6 +1176,8 @@
11901176 			 struct sctp_sock *, struct sctp_sock *);
11911177 int sctp_bind_addr_state(const struct sctp_bind_addr *bp,
11921178 			 const union sctp_addr *addr);
1179
+int sctp_bind_addrs_check(struct sctp_sock *sp,
1180
+			  struct sctp_sock *sp2, int cnt2);
11931181 union sctp_addr *sctp_find_unmatch_addr(struct sctp_bind_addr	*bp,
11941182 					const union sctp_addr	*addrs,
11951183 					int			addrcnt,
....@@ -1333,8 +1321,11 @@
13331321 	/* SCTP-AUTH: endpoint shared keys */
13341322 	struct list_head endpoint_shared_keys;
13351323 	__u16 active_key_id;
1336
-	__u8  auth_enable:1,
1324
+	__u8  ecn_enable:1,
1325
+	      auth_enable:1,
1326
+	      intl_enable:1,
13371327 	      prsctp_enable:1,
1328
+	      asconf_enable:1,
13381329 	      reconf_enable:1;
13391330 
13401331 	__u8  strreset_enable;
....@@ -1400,7 +1391,7 @@
14001391 	struct list_head prio_sched;
14011392 	/* List of streams scheduled */
14021393 	struct list_head active;
1403
-	/* The next stream stream in line */
1394
+	/* The next stream in line */
14041395 	struct sctp_stream_out_ext *next;
14051396 	__u16 prio;
14061397 };
....@@ -1445,8 +1436,9 @@
14451436 };
14461437 
14471438 struct sctp_stream {
1448
-	struct flex_array *out;
1449
-	struct flex_array *in;
1439
+	GENRADIX(struct sctp_stream_out) out;
1440
+	GENRADIX(struct sctp_stream_in)	in;
1441
+
14501442 	__u16 outcnt;
14511443 	__u16 incnt;
14521444 	/* Current stream being sent, if any */
....@@ -1461,7 +1453,7 @@
14611453 		struct {
14621454 			/* List of streams scheduled */
14631455 			struct list_head rr_list;
1464
-			/* The next stream stream in line */
1456
+			/* The next stream in line */
14651457 			struct sctp_stream_out_ext *rr_next;
14661458 		};
14671459 	};
....@@ -1469,17 +1461,17 @@
14691461 };
14701462 
14711463 static inline struct sctp_stream_out *sctp_stream_out(
1472
-	const struct sctp_stream *stream,
1464
+	struct sctp_stream *stream,
14731465 	__u16 sid)
14741466 {
1475
-	return flex_array_get(stream->out, sid);
1467
+	return genradix_ptr(&stream->out, sid);
14761468 }
14771469 
14781470 static inline struct sctp_stream_in *sctp_stream_in(
1479
-	const struct sctp_stream *stream,
1471
+	struct sctp_stream *stream,
14801472 	__u16 sid)
14811473 {
1482
-	return flex_array_get(stream->in, sid);
1474
+	return genradix_ptr(&stream->in, sid);
14831475 }
14841476 
14851477 #define SCTP_SO(s, i) sctp_stream_out((s), (i))
....@@ -1689,28 +1681,30 @@
16891681 		__be16 addip_disabled_mask;
16901682 
16911683 		/* These are capabilities which our peer advertised.  */
1692
-		__u8	ecn_capable:1,      /* Can peer do ECN? */
1684
+		__u16	ecn_capable:1,      /* Can peer do ECN? */
16931685 			ipv4_address:1,     /* Peer understands IPv4 addresses? */
16941686 			ipv6_address:1,     /* Peer understands IPv6 addresses? */
16951687 			hostname_address:1, /* Peer understands DNS addresses? */
16961688 			asconf_capable:1,   /* Does peer support ADDIP? */
16971689 			prsctp_capable:1,   /* Can peer do PR-SCTP? */
16981690 			reconf_capable:1,   /* Can peer do RE-CONFIG? */
1699
-			auth_capable:1;     /* Is peer doing SCTP-AUTH? */
1700
-
1701
-		/* sack_needed : This flag indicates if the next received
1702
-		 *             : packet is to be responded to with a
1703
-		 *             : SACK. This is initialized to 0.  When a packet
1704
-		 *             : is received sack_cnt is incremented. If this value
1705
-		 *             : reaches 2 or more, a SACK is sent and the
1706
-		 *             : value is reset to 0. Note: This is used only
1707
-		 *             : when no DATA chunks are received out of
1708
-		 *             : order.  When DATA chunks are out of order,
1709
-		 *             : SACK's are not delayed (see Section 6).
1710
-		 */
1711
-		__u8    sack_needed:1,     /* Do we need to sack the peer? */
1691
+			intl_capable:1,     /* Can peer do INTERLEAVE */
1692
+			auth_capable:1,     /* Is peer doing SCTP-AUTH? */
1693
+			/* sack_needed:
1694
+			 *   This flag indicates if the next received
1695
+			 *   packet is to be responded to with a
1696
+			 *   SACK. This is initialized to 0.  When a packet
1697
+			 *   is received sack_cnt is incremented. If this value
1698
+			 *   reaches 2 or more, a SACK is sent and the
1699
+			 *   value is reset to 0. Note: This is used only
1700
+			 *   when no DATA chunks are received out of
1701
+			 *   order.  When DATA chunks are out of order,
1702
+			 *   SACK's are not delayed (see Section 6).
1703
+			 */
1704
+			sack_needed:1,     /* Do we need to sack the peer? */
17121705 			sack_generation:1,
17131706 			zero_window_announced:1;
1707
+
17141708 		__u32	sack_cnt;
17151709 
17161710 		__u32   adaptation_ind;	 /* Adaptation Code point. */
....@@ -1769,7 +1763,7 @@
17691763 	int max_burst;
17701764 
17711765 	/* This is the max_retrans value for the association.  This value will
1772
-	 * be initialized initialized from system defaults, but can be
1766
+	 * be initialized from system defaults, but can be
17731767 	 * modified by the SCTP_ASSOCINFO socket option.
17741768 	 */
17751769 	int max_retrans;
....@@ -1778,7 +1772,9 @@
17781772 	 * and will be initialized from the assocs value.  This can be
17791773 	 * changed using the SCTP_PEER_ADDR_THLDS socket option
17801774 	 */
1781
-	int pf_retrans;
1775
+	__u16 pf_retrans;
1776
+	/* Used for primary path switchover. */
1777
+	__u16 ps_retrans;
17821778 
17831779 	/* Maximum number of times the endpoint will retransmit INIT  */
17841780 	__u16 max_init_attempts;
....@@ -2059,10 +2055,8 @@
20592055 
20602056 	__u8 need_ecne:1,	/* Need to send an ECNE Chunk? */
20612057 	     temp:1,		/* Is it a temporary association? */
2062
-	     force_delay:1,
2063
-	     intl_enable:1,
2064
-	     prsctp_enable:1,
2065
-	     reconf_enable:1;
2058
+	     pf_expose:2,       /* Expose pf state? */
2059
+	     force_delay:1;
20662060 
20672061 	__u8 strreset_enable;
20682062 	__u8 strreset_outstanding; /* request param count on the fly */
....@@ -2077,6 +2071,8 @@
20772071 
20782072 	int sent_cnt_removable;
20792073 
2074
+	__u16 subscribe;
2075
+
20802076 	__u64 abandoned_unsent[SCTP_PR_INDEX(MAX) + 1];
20812077 	__u64 abandoned_sent[SCTP_PR_INDEX(MAX) + 1];
20822078