Merge PR #26466 into master

* refs/pull/26466/head:
	msg/async, v2: fix wrong base for KeepAliveFrameAck.
	msg/async, v2: frame decoding operates on bufferlist.
	msg/async, v2: drop ceph_msg_header2 fields duplicating segment info.
	msg/async, v2: drop the scaffolding in preamble parsing.
	msg/async, v2: handle msg authentication failures.
	msg/async, v2: drop depedency on uint128_t. Clean up onwire crypto.
	msg/async, v2: fix cur_msg_size in ::reset_recv_state().
	msg/async, v2: drop magic numbers for segments.
	msg/async, v2: get rid of magic number in SignedEncryptedFrame.
	msg/async, v2: get rid of the magic number for default alignment.
	msg/async, v2: decouple onwire segment length from logical length.
	msg/async, v2: follow the const bl& concept in authenticated_encrypt_update().
	msg/async, v2: drop handling of extra segments in ::fill_preamble().
	msg/async, v2: get rid of magic numbers for alignment.
	msg/async, v2: drop reserve() from onwire crypto's TxHandler.
	msg/async: add con_mode to debug lines
	msg/DispatchQueue: include con_mode in <== line
	common/ceph_strings: get_con_mode_name()
	msg/Connection: add get_con_mode()
	msg/async/ProtocolV2: clean up preamble comments
	msg/async, v2: improve debug around sending client indent.
	msg/async, v2: bring back the no-encryption ability.
	msg/async, v2: workaround con_mode handling.
	msg/async, v2: drop the throttles bypass.
	msg/async, v2: READ_MESSAGE_FRONT -> THROTTLE_DONE.
	msg/async: WaitFrame of V2 can be crypto processed now.
	msg/async: initial multi-segment support for V2.
	msg/async: V2 bypasses throttles just for development.
	msg/async: rectify reseting security state in ProtocolV2::reset_recv_state().
	msg/async: switch to CRC32 for V2 preamble blocks.
	msg/async: bump up preamble block size to 32 bytes.
	msg/async: get rid of the distiction on main and extra V2 preamble.
	msg/async: add debug around empty ClientIdent::addrs.
	msg/async: V2 uses segments instead of next_payload_len, part 1.
	msg/async: perform V2 frame dispatch in dedicated method.
	msg/async: implement crc checking for main preamble of V2.
	msg/async: receive V2 messages with new preable format.
	msg/async: transmit V2 messages with new preable format.
	msg/async: reset crypto processors in ProtocolV2::reset_recv_state().
	msg/async: preamble of V2 Frames is now encrypted and authenticated.
	msg/async: slightly rework ProtocolV2 preamble crafting.
	msg/async: reset the rx stream handler in ::handle_read_frame_length_and_tag.
	auth, msg/async, v2: drop AuthStreamHandler and AES128GCM_StreamHandler.
	msg/async: Messages in Protocol2 are crypto-processed only once.
	msg/async: SignedEncryptedFrame uses ceph::crypto::onwire.
	msg/async: expose message segmentation to ::write_message().
	auth: implement ceph::crypto::onwire with OpenSSL EVP.
	auth: introduce ceph::crypto::onwire interfaces.
	msg/async: decouple MessageHeaderFrame from SignedEncryptedFrame.
	msg/async: move Protocol* asserts in SignedEncryptedFrame to compile time.
	msg/async: simplify encryption handling in the PayloadFrame class.
	auth: drop AES128CBC_HMACSHA256_StreamHandler.
	msg/async: ensure consistency between con_mode and session_security.
	msg/async: drop MessageFrame. Use MessageHeaderFrame instead.
	msg/async: set con_mode and session_security at both peers.
	msg/async, auth: switch AuthStreamHandler::rxtx_t to std::unique_ptr.
	crypto: AES128GCM_StreamHandler brings authenticated encryption with AES-GCM.
	include: uint128_t -> ceph::uint128_t + using.
	msg/async: move crypto handling from ProtocolV2 into AuthStreamHandler.
	auth, msg: dissect AuthStreamHandler from AuthSessionHandler.
	auth/cephx: make _calc_signature() of CephxSessionHandler private.
	auth: drop {en,de}crypt_message() from AuthSessionHandler.
	auth: introduce DummyAuthSessionHandler.
	auth: make AuthSessionHandler purely abstract.
	auth: drop no_security() from AuthSessionHandler.
	auth: drop get_protocol() and get_key() from AuthSessionHandler.
	auth: drop sign_bufferlist() from AuthSessionHandler.
	msg/async: drop get_auth_meta() from Protocol.
	msg/async: emphasize ProtocolV2 does authenticated encryption.

Reviewed-by: Sage Weil <sage@redhat.com>

diff --cc src/msg/async/ProtocolV2.cc
Simple merge