Merge branch 'sctp-convert-to-use-crypto-lib-and-upgrade-cookie-auth'

Eric Biggers says:

====================
sctp: Convert to use crypto lib, and upgrade cookie auth

This series converts SCTP chunk and cookie authentication to use the
crypto library API instead of crypto_shash.  This is much simpler (the
diffstat should speak for itself), and also faster too.  In addition,
this series upgrades the cookie authentication to use HMAC-SHA256.

I've tested that kernels with this series applied can continue to
communicate using SCTP with older ones, in either direction, using any
choice of None, HMAC-SHA1, or HMAC-SHA256 chunk authentication.
====================

Link: https://patch.msgid.link/20250818205426.30222-1-ebiggers@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>