# SPDX-License-Identifier: GPL-2.0-only
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#
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# SCTP configuration
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#
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menuconfig IP_SCTP
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tristate "The SCTP Protocol"
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depends on INET
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depends on IPV6 || IPV6=n
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select CRYPTO
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select CRYPTO_HMAC
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select CRYPTO_SHA1
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select LIBCRC32C
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help
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Stream Control Transmission Protocol
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From RFC 2960 <http://www.ietf.org/rfc/rfc2960.txt>.
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"SCTP is a reliable transport protocol operating on top of a
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connectionless packet network such as IP. It offers the following
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services to its users:
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-- acknowledged error-free non-duplicated transfer of user data,
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-- data fragmentation to conform to discovered path MTU size,
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-- sequenced delivery of user messages within multiple streams,
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with an option for order-of-arrival delivery of individual user
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messages,
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-- optional bundling of multiple user messages into a single SCTP
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packet, and
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-- network-level fault tolerance through supporting of multi-
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homing at either or both ends of an association."
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To compile this protocol support as a module, choose M here: the
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module will be called sctp. Debug messages are handled by the
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kernel's dynamic debugging framework.
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If in doubt, say N.
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if IP_SCTP
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config SCTP_DBG_OBJCNT
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bool "SCTP: Debug object counts"
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depends on PROC_FS
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help
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If you say Y, this will enable debugging support for counting the
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type of objects that are currently allocated. This is useful for
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identifying memory leaks. This debug information can be viewed by
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'cat /proc/net/sctp/sctp_dbg_objcnt'
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If unsure, say N
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choice
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prompt "Default SCTP cookie HMAC encoding"
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default SCTP_DEFAULT_COOKIE_HMAC_MD5
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help
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This option sets the default sctp cookie hmac algorithm
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when in doubt select 'md5'
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config SCTP_DEFAULT_COOKIE_HMAC_MD5
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bool "Enable optional MD5 hmac cookie generation"
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help
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Enable optional MD5 hmac based SCTP cookie generation
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select SCTP_COOKIE_HMAC_MD5
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config SCTP_DEFAULT_COOKIE_HMAC_SHA1
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bool "Enable optional SHA1 hmac cookie generation"
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help
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Enable optional SHA1 hmac based SCTP cookie generation
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select SCTP_COOKIE_HMAC_SHA1
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config SCTP_DEFAULT_COOKIE_HMAC_NONE
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bool "Use no hmac alg in SCTP cookie generation"
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help
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Use no hmac algorithm in SCTP cookie generation
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endchoice
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config SCTP_COOKIE_HMAC_MD5
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bool "Enable optional MD5 hmac cookie generation"
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help
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Enable optional MD5 hmac based SCTP cookie generation
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select CRYPTO_HMAC if SCTP_COOKIE_HMAC_MD5
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select CRYPTO_MD5 if SCTP_COOKIE_HMAC_MD5
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config SCTP_COOKIE_HMAC_SHA1
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bool "Enable optional SHA1 hmac cookie generation"
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help
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Enable optional SHA1 hmac based SCTP cookie generation
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select CRYPTO_HMAC if SCTP_COOKIE_HMAC_SHA1
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select CRYPTO_SHA1 if SCTP_COOKIE_HMAC_SHA1
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config INET_SCTP_DIAG
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depends on INET_DIAG
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def_tristate INET_DIAG
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endif # IP_SCTP
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