| # 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 NET_CRC32C | 
 | 	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 |