From patchwork Fri Oct 11 15:54:21 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 835255 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 73B245381E for ; Fri, 11 Oct 2024 15:54:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728662088; cv=none; b=sxptjosV3tz2JlW6X2ij/ORphGYjPhRUd7Ru56zflvXi4iFII3sIMpALHYAWpyZ17KbIncpOAVP+dmtW9ChXBIP0/Mz7s+mCjoKpenwEWsIpNvmr0hEWci7dPP2ZxsAmVY1j0IdojTebUwVWvK+521zODbUsezyywRxkUyN5z3o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1728662088; c=relaxed/simple; bh=HdoLHibnRwy9BsJeQ6us0hgYQTaSOegJuudcvCRnHok=; h=From:To:Cc:Subject:Date:Message-Id:MIME-Version; b=QkooKqYHGErqK0yVHc0/0tfiQ+1b+chWc7EfF/SaYHDWOj8UmXykxLwWKyUyrhTHYbsZimsSwXws5Qr7T2BruFoh+1oVt9w3fSTfZDbuYUI0el9FgD0Mnm4Ton5TLLRZj4eD4D8eg4Ojet2r/YseJzyGe6+Do8ZCQj5zBqd9urs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=ez5wHEyF; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="ez5wHEyF" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5747FC4CEC3; Fri, 11 Oct 2024 15:54:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1728662088; bh=HdoLHibnRwy9BsJeQ6us0hgYQTaSOegJuudcvCRnHok=; h=From:To:Cc:Subject:Date:From; b=ez5wHEyFThqX+GO63GCIMrnk1wZRtLnOra/It0THRSLvTzIk8wuQDis1YDGVUQ11k pxBygjizfAtxPuZrw31GnwXXaP8zMW8TUEjnVAHbZMNY91wHGJo/49RPdDBxm+i4M+ EOeIdvRwxSKCQOWrCjDzqA0TgYuLpShNFRT2V86DK7NdQT9FYDCDnSnywNTpGQxPWS 75QfV+qzHCTlMqXgVgBcgeDugQ+SIyGqPraP6suCgG3Vg3qBgC2roKkjG521TAGCK/ z9m2lJ6cBIQalMxgX6RKLDncFOIwcBwa9Y7DuD8Uit/Rn1mjoiIF2J+vylrJ/NKRdt cn6aljK49KMPQ== From: Hannes Reinecke To: Christoph Hellwig Cc: Keith Busch , Sagi Grimberg , linux-nvme@lists.infradead.org, Eric Biggers , linux-crypto@vger.kernel.org, Hannes Reinecke Subject: [PATCHv10 0/9] nvme: implement secure concatenation Date: Fri, 11 Oct 2024 17:54:21 +0200 Message-Id: <20241011155430.43450-1-hare@kernel.org> X-Mailer: git-send-email 2.35.3 Precedence: bulk X-Mailing-List: linux-crypto@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Hannes Reinecke Hi all, here's my attempt to implement secure concatenation for NVMe-of TCP as outlined in TP8018. The original (v5) patchset had been split in two, the first part of which has already been merged with nvme-6.11, and this is the second part which actually implements secure concatenation. Secure concatenation means that a TLS PSK is generated from the key material negotiated by the DH-HMAC-CHAP protocol, and the TLS PSK is then used for a subsequent TLS connection. The difference between the original definition of secure concatenation and the method outlined in TP8018 is that with TP8018 the connection is reset after DH-HMAC-CHAP negotiation, and a new connection is setup with the generated TLS PSK. To implement that Sagi came up with the idea to directly reset the admin queue once the DH-CHAP negotiation has completed; that way it will be transparent to the upper layers and we don't have to worry about exposing queues which should not be used. A blktest submission is in https://github.com/osandov/blktests/pull/147 in case anyone want to run their own tests. As usual, comments and reviews are welcome. Patchset can be found at git.kernel.org:/pub/scm/linux/kernel/git/hare/nvme.git branch secure-concat.v10 Changes to v9: - Include reviews from Eric Biggers - Fixup secure concatenation after reset - Rebased to nvme-6.12 Changes to v8: - Include reviews from Eric Biggers - Make hkdf a proper module - Add testcases for hkdf Changes to v7: - Add patch to display nvme target TLS status in debugfs - Include reviews from Sagi Changes to v6: - Rebase to nvme-6.11 Changes to v5: - Include reviews from Sagi - Split patchset in two parts Changes to v4: - Rework reset admin queue functionality based on an idea from Sagi (thanks!) - kbuild robot fixes - Fixup dhchap negotiation with non-empty C2 value Changes to v3: - Include reviews from Sagi - Do not start I/O queues after DH-HMAC-CHAP negotiation - Use bool to indicate TLS has been enabled on a queue - Add 'tls_keyring' sysfs attribute - Add 'tls_configured_key' sysfs attribute Changes to v2: - Fixup reset after dhchap negotiation - Disable namespace scanning on I/O queues after dhchap negotiation - Reworked TLS key handling (again) Changes to the original submission: - Sanitize TLS key handling - Fixup modconfig compilation Hannes Reinecke (9): crypto,fs: Separate out hkdf_extract() and hkdf_expand() nvme: add nvme_auth_generate_psk() nvme: add nvme_auth_generate_digest() nvme: add nvme_auth_derive_tls_psk() nvme-keyring: add nvme_tls_psk_refresh() nvme-tcp: request secure channel concatenation nvme-fabrics: reset admin connection for secure concatenation nvmet-tcp: support secure channel concatenation nvmet: add tls_concat and tls_key debugfs entries crypto/Kconfig | 6 + crypto/Makefile | 1 + crypto/hkdf.c | 402 +++++++++++++++++++++++++ drivers/nvme/common/Kconfig | 1 + drivers/nvme/common/auth.c | 344 +++++++++++++++++++++ drivers/nvme/common/keyring.c | 64 ++++ drivers/nvme/host/auth.c | 108 ++++++- drivers/nvme/host/fabrics.c | 34 ++- drivers/nvme/host/fabrics.h | 3 + drivers/nvme/host/nvme.h | 2 + drivers/nvme/host/sysfs.c | 4 +- drivers/nvme/host/tcp.c | 56 +++- drivers/nvme/target/auth.c | 72 ++++- drivers/nvme/target/debugfs.c | 27 ++ drivers/nvme/target/fabrics-cmd-auth.c | 49 ++- drivers/nvme/target/fabrics-cmd.c | 33 +- drivers/nvme/target/nvmet.h | 38 ++- drivers/nvme/target/tcp.c | 23 +- fs/crypto/Kconfig | 1 + fs/crypto/hkdf.c | 85 +----- include/crypto/hkdf.h | 18 ++ include/linux/nvme-auth.h | 7 + include/linux/nvme-keyring.h | 9 + include/linux/nvme.h | 7 + 24 files changed, 1287 insertions(+), 107 deletions(-) create mode 100644 crypto/hkdf.c create mode 100644 include/crypto/hkdf.h