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Neil Horman 3c68198e75 sctp: Make hmac algorithm selection for cookie generation dynamic ... Currently sctp allows for the optional use of md5 of sha1 hmac algorithms to generate cookie values when establishing new connections via two build time config options. Theres no real reason to make this a static selection. We can add a sysctl that allows for the dynamic selection of these algorithms at run time, with the default value determined by the corresponding crypto library availability. This comes in handy when, for example running a system in FIPS mode, where use of md5 is disallowed, but SHA1 is permitted. Note: This new sysctl has no corresponding socket option to select the cookie hmac algorithm. I chose not to implement that intentionally, as RFC 6458 contains no option for this value, and I opted not to pollute the socket option namespace. Change notes: v2) * Updated subject to have the proper sctp prefix as per Dave M. * Replaced deafult selection options with new options that allow developers to explicitly select available hmac algs at build time as per suggestion by Vlad Y. Signed-off-by: Neil Horman <nhorman@tuxdriver.com> CC: Vlad Yasevich <vyasevich@gmail.com> CC: "David S. Miller" <davem@davemloft.net> CC: netdev@vger.kernel.org Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>		12 years ago
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conntrack.h	…
core.h	…
dccp.h	…
generic.h	…
hash.h	…
ipv4.h	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	12 years ago
ipv6.h	ipv6: add a new namespace for nf_conntrack_reasm	12 years ago
mib.h	…
packet.h	…
sctp.h	sctp: Make hmac algorithm selection for cookie generation dynamic	12 years ago
unix.h	…
x_tables.h	…
xfrm.h	…