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Rohit Maheshwari says: ==================== cxgb4/chcr: ktls tx ofld support on T6 adapter This series of patches add support for kernel tls offload in Tx direction, over Chelsio T6 NICs. SKBs marked as decrypted will be treated as tls plain text packets and then offloaded to encrypt using network device (chelsio T6 adapter). This series is broken down as follows: Patch 1 defines a new macro and registers tls_dev_add and tls_dev_del callbacks. When tls_dev_add gets called we send a connection request to our hardware and to make HW understand about tls offload. Its a partial connection setup and only ipv4 part is done. Patch 2 handles the HW response of the connection request and then we request to update TCB and handle it's HW response as well. Also we save crypto key locally. Only supporting TLS_CIPHER_AES_GCM_128_KEY_SIZE. Patch 3 handles tls marked skbs (decrypted bit set) and sends it to ULD for crypto handling. This code has a minimal portion of tx handler, to handle only one complete record per skb. Patch 4 hanldes partial end part of records. Also added logic to handle multiple records in one single skb. It also adds support to send out tcp option(/s) if exists in skb. If a record is partial but has end part of a record, we'll fetch complete record and then only send it to HW to generate HASH on complete record. Patch 5 handles partial first or middle part of record, it uses AES_CTR to encrypt the partial record. If we are trying to send middle record, it's start should be 16 byte aligned, so we'll fetch few earlier bytes from the record and then send it to HW for encryption. Patch 6 enables ipv6 support and also includes ktls startistics. v1->v2: - mark tcb state to close in tls_dev_del. - u_ctx is now picked from adapter structure. - clear atid in case of failure. - corrected ULP_CRYPTO_KTLS_INLINE value. - optimized tcb update using control queue. - state machine handling when earlier states received. - chcr_write_cpl_set_tcb_ulp function is shifted to patch3. - un-necessary updating left variable. v2->v3: - add empty line after variable declaration. - local variable declaration in reverse christmas tree ordering. v3->v4: - replaced kfree_skb with dev_kfree_skb_any. - corrected error message reported by kbuild test robot <lkp@intel.com> - mss calculation logic. - correct place for Alloc skb check. - Replaced atomic_t with atomic64_t - added few more statistics counters. ==================== Signed-off-by: David S. Miller <davem@davemloft.net> |
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| kernel | ||
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| .cocciconfig | ||
| .get_maintainer.ignore | ||
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| README | ||
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.