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139 lines
3.9 KiB
139 lines
3.9 KiB
/* |
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* Copyright (c) 2016-2017, Mellanox Technologies. All rights reserved. |
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* Copyright (c) 2016-2017, Dave Watson <[email protected]>. All rights reserved. |
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* |
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* This software is available to you under a choice of one of two |
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* licenses. You may choose to be licensed under the terms of the GNU |
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* General Public License (GPL) Version 2, available from the file |
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* COPYING in the main directory of this source tree, or the |
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* OpenIB.org BSD license below: |
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* |
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* Redistribution and use in source and binary forms, with or |
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* without modification, are permitted provided that the following |
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* conditions are met: |
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* |
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* - Redistributions of source code must retain the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer. |
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* |
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* - Redistributions in binary form must reproduce the above |
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* copyright notice, this list of conditions and the following |
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* disclaimer in the documentation and/or other materials |
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* provided with the distribution. |
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* |
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
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* SOFTWARE. |
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*/ |
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#include <linux/list.h> |
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#include <linux/rcupdate.h> |
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#include <linux/spinlock.h> |
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#include <net/inet_connection_sock.h> |
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#include <net/tls.h> |
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#include <net/tls_toe.h> |
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static LIST_HEAD(device_list); |
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static DEFINE_SPINLOCK(device_spinlock); |
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static void tls_toe_sk_destruct(struct sock *sk) |
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{ |
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struct inet_connection_sock *icsk = inet_csk(sk); |
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struct tls_context *ctx = tls_get_ctx(sk); |
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ctx->sk_destruct(sk); |
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/* Free ctx */ |
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rcu_assign_pointer(icsk->icsk_ulp_data, NULL); |
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tls_ctx_free(sk, ctx); |
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} |
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int tls_toe_bypass(struct sock *sk) |
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{ |
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struct tls_toe_device *dev; |
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struct tls_context *ctx; |
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int rc = 0; |
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spin_lock_bh(&device_spinlock); |
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list_for_each_entry(dev, &device_list, dev_list) { |
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if (dev->feature && dev->feature(dev)) { |
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ctx = tls_ctx_create(sk); |
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if (!ctx) |
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goto out; |
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ctx->sk_destruct = sk->sk_destruct; |
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sk->sk_destruct = tls_toe_sk_destruct; |
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ctx->rx_conf = TLS_HW_RECORD; |
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ctx->tx_conf = TLS_HW_RECORD; |
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update_sk_prot(sk, ctx); |
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rc = 1; |
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break; |
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} |
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} |
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out: |
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spin_unlock_bh(&device_spinlock); |
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return rc; |
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} |
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void tls_toe_unhash(struct sock *sk) |
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{ |
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struct tls_context *ctx = tls_get_ctx(sk); |
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struct tls_toe_device *dev; |
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spin_lock_bh(&device_spinlock); |
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list_for_each_entry(dev, &device_list, dev_list) { |
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if (dev->unhash) { |
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kref_get(&dev->kref); |
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spin_unlock_bh(&device_spinlock); |
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dev->unhash(dev, sk); |
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kref_put(&dev->kref, dev->release); |
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spin_lock_bh(&device_spinlock); |
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} |
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} |
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spin_unlock_bh(&device_spinlock); |
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ctx->sk_proto->unhash(sk); |
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} |
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int tls_toe_hash(struct sock *sk) |
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{ |
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struct tls_context *ctx = tls_get_ctx(sk); |
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struct tls_toe_device *dev; |
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int err; |
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err = ctx->sk_proto->hash(sk); |
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spin_lock_bh(&device_spinlock); |
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list_for_each_entry(dev, &device_list, dev_list) { |
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if (dev->hash) { |
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kref_get(&dev->kref); |
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spin_unlock_bh(&device_spinlock); |
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err |= dev->hash(dev, sk); |
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kref_put(&dev->kref, dev->release); |
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spin_lock_bh(&device_spinlock); |
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} |
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} |
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spin_unlock_bh(&device_spinlock); |
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if (err) |
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tls_toe_unhash(sk); |
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return err; |
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} |
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void tls_toe_register_device(struct tls_toe_device *device) |
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{ |
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spin_lock_bh(&device_spinlock); |
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list_add_tail(&device->dev_list, &device_list); |
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spin_unlock_bh(&device_spinlock); |
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} |
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EXPORT_SYMBOL(tls_toe_register_device); |
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void tls_toe_unregister_device(struct tls_toe_device *device) |
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{ |
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spin_lock_bh(&device_spinlock); |
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list_del(&device->dev_list); |
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spin_unlock_bh(&device_spinlock); |
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} |
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EXPORT_SYMBOL(tls_toe_unregister_device);
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