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-rw-r--r--include/linux/sctp.h85
1 files changed, 50 insertions, 35 deletions
diff --git a/include/linux/sctp.h b/include/linux/sctp.h
index 83d94341e003..6719949135c9 100644
--- a/include/linux/sctp.h
+++ b/include/linux/sctp.h
@@ -1,3 +1,4 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
/* SCTP kernel reference Implementation
* (C) Copyright IBM Corp. 2001, 2004
* Copyright (c) 1999-2000 Cisco, Inc.
@@ -10,22 +11,6 @@
*
* Various protocol defined structures.
*
- * This SCTP implementation is free software;
- * you can redistribute it and/or modify it under the terms of
- * the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This SCTP implementation is distributed in the hope that it
- * will be useful, but WITHOUT ANY WARRANTY; without even the implied
- * ************************
- * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- * See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU CC; see the file COPYING. If not, see
- * <http://www.gnu.org/licenses/>.
- *
* Please send any bug reports or fixes you make to the
* email address(es):
* lksctp developers <linux-sctp@vger.kernel.org>
@@ -113,6 +98,7 @@ enum sctp_cid {
SCTP_CID_I_FWD_TSN = 0xC2,
SCTP_CID_ASCONF_ACK = 0x80,
SCTP_CID_RECONF = 0x82,
+ SCTP_CID_PAD = 0x84,
}; /* enum */
@@ -236,7 +222,6 @@ struct sctp_datahdr {
__be16 stream;
__be16 ssn;
__u32 ppid;
- __u8 payload[0];
};
struct sctp_data_chunk {
@@ -253,7 +238,6 @@ struct sctp_idatahdr {
__u32 ppid;
__be32 fsn;
};
- __u8 payload[0];
};
struct sctp_idata_chunk {
@@ -284,7 +268,7 @@ struct sctp_inithdr {
__be16 num_outbound_streams;
__be16 num_inbound_streams;
__be32 initial_tsn;
- __u8 params[0];
+ /* __u8 params[]; */
};
struct sctp_init_chunk {
@@ -314,13 +298,13 @@ struct sctp_cookie_preserve_param {
/* Section 3.3.2.1 Host Name Address (11) */
struct sctp_hostname_param {
struct sctp_paramhdr param_hdr;
- uint8_t hostname[0];
+ uint8_t hostname[];
};
/* Section 3.3.2.1 Supported Address Types (12) */
struct sctp_supported_addrs_param {
struct sctp_paramhdr param_hdr;
- __be16 types[0];
+ __be16 types[];
};
/* ADDIP Section 3.2.6 Adaptation Layer Indication */
@@ -332,25 +316,25 @@ struct sctp_adaptation_ind_param {
/* ADDIP Section 4.2.7 Supported Extensions Parameter */
struct sctp_supported_ext_param {
struct sctp_paramhdr param_hdr;
- __u8 chunks[0];
+ __u8 chunks[];
};
/* AUTH Section 3.1 Random */
struct sctp_random_param {
struct sctp_paramhdr param_hdr;
- __u8 random_val[0];
+ __u8 random_val[];
};
/* AUTH Section 3.2 Chunk List */
struct sctp_chunks_param {
struct sctp_paramhdr param_hdr;
- __u8 chunks[0];
+ __u8 chunks[];
};
/* AUTH Section 3.3 HMAC Algorithm */
struct sctp_hmac_algo_param {
struct sctp_paramhdr param_hdr;
- __be16 hmac_ids[0];
+ __be16 hmac_ids[];
};
/* RFC 2960. Section 3.3.3 Initiation Acknowledgement (INIT ACK) (2):
@@ -365,7 +349,7 @@ struct sctp_initack_chunk {
/* Section 3.3.3.1 State Cookie (7) */
struct sctp_cookie_param {
struct sctp_paramhdr p;
- __u8 body[0];
+ __u8 body[];
};
/* Section 3.3.3.1 Unrecognized Parameters (8) */
@@ -399,7 +383,7 @@ struct sctp_sackhdr {
__be32 a_rwnd;
__be16 num_gap_ack_blocks;
__be16 num_dup_tsns;
- union sctp_sack_variable variable[0];
+ /* union sctp_sack_variable variable[]; */
};
struct sctp_sack_chunk {
@@ -425,6 +409,12 @@ struct sctp_heartbeat_chunk {
};
+/* PAD chunk could be bundled with heartbeat chunk to probe pmtu */
+struct sctp_pad_chunk {
+ struct sctp_chunkhdr uh;
+};
+
+
/* For the abort and shutdown ACK we must carry the init tag in the
* common header. Just the common header is all that is needed with a
* chunk descriptor.
@@ -451,7 +441,7 @@ struct sctp_shutdown_chunk {
struct sctp_errhdr {
__be16 cause;
__be16 length;
- __u8 variable[0];
+ /* __u8 variable[]; */
};
struct sctp_operr_chunk {
@@ -497,11 +487,13 @@ enum sctp_error {
* 11 Restart of an association with new addresses
* 12 User Initiated Abort
* 13 Protocol Violation
+ * 14 Restart of an Association with New Encapsulation Port
*/
SCTP_ERROR_RESTART = cpu_to_be16(0x0b),
SCTP_ERROR_USER_ABORT = cpu_to_be16(0x0c),
SCTP_ERROR_PROTO_VIOLATION = cpu_to_be16(0x0d),
+ SCTP_ERROR_NEW_ENCAP_PORT = cpu_to_be16(0x0e),
/* ADDIP Section 3.3 New Error Causes
*
@@ -609,7 +601,7 @@ struct sctp_fwdtsn_skip {
struct sctp_fwdtsn_hdr {
__be32 new_cum_tsn;
- struct sctp_fwdtsn_skip skip[0];
+ /* struct sctp_fwdtsn_skip skip[]; */
};
struct sctp_fwdtsn_chunk {
@@ -626,7 +618,7 @@ struct sctp_ifwdtsn_skip {
struct sctp_ifwdtsn_hdr {
__be32 new_cum_tsn;
- struct sctp_ifwdtsn_skip skip[0];
+ /* struct sctp_ifwdtsn_skip skip[]; */
};
struct sctp_ifwdtsn_chunk {
@@ -673,7 +665,7 @@ struct sctp_addip_param {
struct sctp_addiphdr {
__be32 serial;
- __u8 params[0];
+ /* __u8 params[]; */
};
struct sctp_addip_chunk {
@@ -733,7 +725,7 @@ struct sctp_addip_chunk {
struct sctp_authhdr {
__be16 shkey_id;
__be16 hmac_id;
- __u8 hmac[0];
+ /* __u8 hmac[]; */
};
struct sctp_auth_chunk {
@@ -748,7 +740,7 @@ struct sctp_infox {
struct sctp_reconf_chunk {
struct sctp_chunkhdr chunk_hdr;
- __u8 params[0];
+ /* __u8 params[]; */
};
struct sctp_strreset_outreq {
@@ -756,13 +748,13 @@ struct sctp_strreset_outreq {
__be32 request_seq;
__be32 response_seq;
__be32 send_reset_at_tsn;
- __be16 list_of_streams[0];
+ __be16 list_of_streams[];
};
struct sctp_strreset_inreq {
struct sctp_paramhdr param_hdr;
__be32 request_seq;
- __be16 list_of_streams[0];
+ __be16 list_of_streams[];
};
struct sctp_strreset_tsnreq {
@@ -808,4 +800,27 @@ enum {
SCTP_FLOWLABEL_VAL_MASK = 0xfffff
};
+/* UDP Encapsulation
+ * draft-tuexen-tsvwg-sctp-udp-encaps-cons-03.html#section-4-4
+ *
+ * The error cause indicating an "Restart of an Association with
+ * New Encapsulation Port"
+ *
+ * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Cause Code = 14 | Cause Length = 8 |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | Current Encapsulation Port | New Encapsulation Port |
+ * +-------------------------------+-------------------------------+
+ */
+struct sctp_new_encap_port_hdr {
+ __be16 cur_port;
+ __be16 new_port;
+};
+
+/* Round an int up to the next multiple of 4. */
+#define SCTP_PAD4(s) (((s)+3)&~3)
+/* Truncate to the previous multiple of 4. */
+#define SCTP_TRUNC4(s) ((s)&~3)
+
#endif /* __LINUX_SCTP_H__ */
generated by cgit (git 2.34.1) at 2025-12-24 20:29:47 +0000