From: Atul Gupta Subject: [RFC crypto v2 0/9] Chelsio Inline TLS Date: Tue, 12 Dec 2017 17:32:25 +0530 Message-ID: <1513080145-11275-1-git-send-email-atul.gupta@chelsio.com> Cc: netdev@vger.kernel.org, davem@davemloft.net, davejwatson@fb.com To: herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org Return-path: Sender: netdev-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org RFC series for Chelsio Inline TLS driver (chtls.ko) Driver use the ULP infrastructure to register chtls as Inline TLS ULP. Chtls use TCP Sockets to transmit and receive TLS record. TCP proto_ops is extended to offload TLS record. T6 adapter provides the following features: -TLS record offload, TLS header, encrypt, digest and transmit -TLS record receive and decrypt -TLS keys store -TCP/IP engine -TLS engine -GCM crypto engine [support CBC also] TLS provides security at the transport layer. It uses TCP to provide reliable end-to-end transport of application data. It relies on TCP for any retransmission. TLS session comprises of three parts: a. TCP/IP connection b. TLS handshake c. Record layer processing TLS handshake state machine is executed in host (refer standard implementation eg. OpenSSL). Setsockopt [SOL_TCP, TCP_ULP] initialize TCP proto-ops for Chelsio inline tls support. setsockopt(sock, SOL_TCP, TCP_ULP, "chtls", sizeof("chtls")); Tx and Rx Keys are decided during handshake and programmed onto the chip after CCS is exchanged. struct tls12_crypto_info_aes_gcm_128 crypto_info setsockopt(sock, SOL_TLS, TLS_TX, &crypto_info, sizeof(crypto_info)) Finish is the first encrypted/decrypted message tx/rx inline. On the Tx path TLS engine receive plain text from openssl, insert IV, fetches the tx key, create cipher text records and generate MAC. TLS header is added to cipher text and forward to TCP/IP engine for transport layer processing and transmission on wire. TX: Application--openssl--chtls---TLS engine---encrypt/auth---TCP/IP engine---wire. On the Rx side, data received is PDU aligned at record boundaries. TLS processes only the complete record. If rx key is programmed on CCS receive, data is decrypted and plain text is posted to host. RX: Wire--cipher-text--TCP/IP engine [PDU align]---TLS engine--- decrypt/auth---plain-text--chtls--openssl--application v2: fixed the following based on the review comments of Stephan Mueller, Stefano Brivio and Hannes Frederic -Added more details in cover letter -Fixed indentation and formating issues -Using aes instead of aes-generic -memset key info after programing the key on chip -reordered the patch sequence Atul Gupta (9): chtls: structure and macro definiton cxgb4: Inline TLS FW Interface cxgb4: LLD driver changes to enable TLS chcr: Key Macro chtls: Key program chtls: CPL handler definition chtls: Inline crypto request Tx/Rx chtls: Register the ULP Makefile Kconfig drivers/crypto/chelsio/Kconfig | 10 + drivers/crypto/chelsio/Makefile | 1 + drivers/crypto/chelsio/chcr_algo.h | 42 + drivers/crypto/chelsio/chcr_core.h | 55 +- drivers/crypto/chelsio/chtls/Makefile | 4 + drivers/crypto/chelsio/chtls/chtls.h | 480 +++++ drivers/crypto/chelsio/chtls/chtls_cm.c | 2045 ++++++++++++++++++++ drivers/crypto/chelsio/chtls/chtls_cm.h | 203 ++ drivers/crypto/chelsio/chtls/chtls_hw.c | 394 ++++ drivers/crypto/chelsio/chtls/chtls_io.c | 1866 ++++++++++++++++++ drivers/crypto/chelsio/chtls/chtls_main.c | 584 ++++++ drivers/net/ethernet/chelsio/cxgb4/cxgb4_debugfs.c | 18 +- drivers/net/ethernet/chelsio/cxgb4/cxgb4_main.c | 32 +- drivers/net/ethernet/chelsio/cxgb4/cxgb4_uld.h | 7 + drivers/net/ethernet/chelsio/cxgb4/sge.c | 98 +- drivers/net/ethernet/chelsio/cxgb4/t4_msg.h | 121 +- drivers/net/ethernet/chelsio/cxgb4/t4_regs.h | 2 + drivers/net/ethernet/chelsio/cxgb4/t4fw_api.h | 165 +- include/uapi/linux/tls.h | 1 + net/ipv4/tcp_minisocks.c | 1 + 20 files changed, 6110 insertions(+), 19 deletions(-) create mode 100644 drivers/crypto/chelsio/chtls/Makefile create mode 100644 drivers/crypto/chelsio/chtls/chtls.h create mode 100644 drivers/crypto/chelsio/chtls/chtls_cm.c create mode 100644 drivers/crypto/chelsio/chtls/chtls_cm.h create mode 100644 drivers/crypto/chelsio/chtls/chtls_hw.c create mode 100644 drivers/crypto/chelsio/chtls/chtls_io.c create mode 100644 drivers/crypto/chelsio/chtls/chtls_main.c -- 1.8.3.1