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