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net/tls: move TOE-related code to a separate file

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Move tls_hw_* functions to a new, separate source file
to avoid confusion with normal, non-TOE offload.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski
2019-10-03 11:18:57 -07:00
committed by David S. Miller
parent 16bed0e6ac
commit 08700dab81
5 changed files with 150 additions and 103 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
include/net/tls.h
View File

@@ -308,7 +308,10 @@ struct tls_offload_context_rx {
#define TLS_OFFLOAD_CONTEXT_SIZE_RX \ #define TLS_OFFLOAD_CONTEXT_SIZE_RX \
(sizeof(struct tls_offload_context_rx) + TLS_DRIVER_STATE_SIZE_RX) (sizeof(struct tls_offload_context_rx) + TLS_DRIVER_STATE_SIZE_RX)
struct tls_context *tls_ctx_create(struct sock *sk);
void tls_ctx_free(struct sock *sk, struct tls_context *ctx); void tls_ctx_free(struct sock *sk, struct tls_context *ctx);
void update_sk_prot(struct sock *sk, struct tls_context *ctx);
int wait_on_pending_writer(struct sock *sk, long *timeo); int wait_on_pending_writer(struct sock *sk, long *timeo);
int tls_sk_query(struct sock *sk, int optname, char __user *optval, int tls_sk_query(struct sock *sk, int optname, char __user *optval,
int __user *optlen); int __user *optlen);

4
include/net/tls_toe.h
View File

@@ -69,5 +69,9 @@ struct tls_toe_device {
struct kref kref; struct kref kref;
}; };
int tls_hw_prot(struct sock *sk);
int tls_hw_hash(struct sock *sk);
void tls_hw_unhash(struct sock *sk);
void tls_toe_register_device(struct tls_toe_device *device); void tls_toe_register_device(struct tls_toe_device *device);
void tls_toe_unregister_device(struct tls_toe_device *device); void tls_toe_unregister_device(struct tls_toe_device *device);

2
net/tls/Makefile
View File

@@ -5,6 +5,6 @@
obj-$(CONFIG_TLS) += tls.o obj-$(CONFIG_TLS) += tls.o
tls-y := tls_main.o tls_sw.o tls-y := tls_main.o tls_sw.o tls_toe.o
tls-$(CONFIG_TLS_DEVICE) += tls_device.o tls_device_fallback.o tls-$(CONFIG_TLS_DEVICE) += tls_device.o tls_device_fallback.o

105
net/tls/tls_main.c
View File

@@ -59,14 +59,12 @@ static struct proto *saved_tcpv6_prot;
static DEFINE_MUTEX(tcpv6_prot_mutex); static DEFINE_MUTEX(tcpv6_prot_mutex);
static struct proto *saved_tcpv4_prot; static struct proto *saved_tcpv4_prot;
static DEFINE_MUTEX(tcpv4_prot_mutex); static DEFINE_MUTEX(tcpv4_prot_mutex);
static LIST_HEAD(device_list);
static DEFINE_SPINLOCK(device_spinlock);
static struct proto tls_prots[TLS_NUM_PROTS][TLS_NUM_CONFIG][TLS_NUM_CONFIG]; static struct proto tls_prots[TLS_NUM_PROTS][TLS_NUM_CONFIG][TLS_NUM_CONFIG];
static struct proto_ops tls_sw_proto_ops; static struct proto_ops tls_sw_proto_ops;
static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG], static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG],
struct proto *base); struct proto *base);
static void update_sk_prot(struct sock *sk, struct tls_context *ctx) void update_sk_prot(struct sock *sk, struct tls_context *ctx)
{ {
int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4; int ip_ver = sk->sk_family == AF_INET6 ? TLSV6 : TLSV4;
@@ -604,7 +602,7 @@ static int tls_setsockopt(struct sock *sk, int level, int optname,
return do_tls_setsockopt(sk, optname, optval, optlen); return do_tls_setsockopt(sk, optname, optval, optlen);
} }
static struct tls_context *create_ctx(struct sock *sk) struct tls_context *tls_ctx_create(struct sock *sk)
{ {
struct inet_connection_sock *icsk = inet_csk(sk); struct inet_connection_sock *icsk = inet_csk(sk);
struct tls_context *ctx; struct tls_context *ctx;
@@ -644,87 +642,6 @@ static void tls_build_proto(struct sock *sk)
} }
} }
static void tls_hw_sk_destruct(struct sock *sk)
{
struct tls_context *ctx = tls_get_ctx(sk);
struct inet_connection_sock *icsk = inet_csk(sk);
ctx->sk_destruct(sk);
/* Free ctx */
rcu_assign_pointer(icsk->icsk_ulp_data, NULL);
tls_ctx_free(sk, ctx);
}
static int tls_hw_prot(struct sock *sk)
{
struct tls_toe_device *dev;
struct tls_context *ctx;
int rc = 0;
spin_lock_bh(&device_spinlock);
list_for_each_entry(dev, &device_list, dev_list) {
if (dev->feature && dev->feature(dev)) {
ctx = create_ctx(sk);
if (!ctx)
goto out;
ctx->sk_destruct = sk->sk_destruct;
sk->sk_destruct = tls_hw_sk_destruct;
ctx->rx_conf = TLS_HW_RECORD;
ctx->tx_conf = TLS_HW_RECORD;
update_sk_prot(sk, ctx);
rc = 1;
break;
}
}
out:
spin_unlock_bh(&device_spinlock);
return rc;
}
static void tls_hw_unhash(struct sock *sk)
{
struct tls_context *ctx = tls_get_ctx(sk);
struct tls_toe_device *dev;
spin_lock_bh(&device_spinlock);
list_for_each_entry(dev, &device_list, dev_list) {
if (dev->unhash) {
kref_get(&dev->kref);
spin_unlock_bh(&device_spinlock);
dev->unhash(dev, sk);
kref_put(&dev->kref, dev->release);
spin_lock_bh(&device_spinlock);
}
}
spin_unlock_bh(&device_spinlock);
ctx->sk_proto->unhash(sk);
}
static int tls_hw_hash(struct sock *sk)
{
struct tls_context *ctx = tls_get_ctx(sk);
struct tls_toe_device *dev;
int err;
err = ctx->sk_proto->hash(sk);
spin_lock_bh(&device_spinlock);
list_for_each_entry(dev, &device_list, dev_list) {
if (dev->hash) {
kref_get(&dev->kref);
spin_unlock_bh(&device_spinlock);
err |= dev->hash(dev, sk);
kref_put(&dev->kref, dev->release);
spin_lock_bh(&device_spinlock);
}
}
spin_unlock_bh(&device_spinlock);
if (err)
tls_hw_unhash(sk);
return err;
}
static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG], static void build_protos(struct proto prot[TLS_NUM_CONFIG][TLS_NUM_CONFIG],
struct proto *base) struct proto *base)
{ {
@@ -789,7 +706,7 @@ static int tls_init(struct sock *sk)
/* allocate tls context */ /* allocate tls context */
write_lock_bh(&sk->sk_callback_lock); write_lock_bh(&sk->sk_callback_lock);
ctx = create_ctx(sk); ctx = tls_ctx_create(sk);
if (!ctx) { if (!ctx) {
rc = -ENOMEM; rc = -ENOMEM;
goto out; goto out;
@@ -875,22 +792,6 @@ static size_t tls_get_info_size(const struct sock *sk)
return size; return size;
} }
void tls_toe_register_device(struct tls_toe_device *device)
{
spin_lock_bh(&device_spinlock);
list_add_tail(&device->dev_list, &device_list);
spin_unlock_bh(&device_spinlock);
}
EXPORT_SYMBOL(tls_toe_register_device);
void tls_toe_unregister_device(struct tls_toe_device *device)
{
spin_lock_bh(&device_spinlock);
list_del(&device->dev_list);
spin_unlock_bh(&device_spinlock);
}
EXPORT_SYMBOL(tls_toe_unregister_device);
static struct tcp_ulp_ops tcp_tls_ulp_ops __read_mostly = { static struct tcp_ulp_ops tcp_tls_ulp_ops __read_mostly = {
.name = "tls", .name = "tls",
.owner = THIS_MODULE, .owner = THIS_MODULE,

139
net/tls/tls_toe.c Normal file
View File

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