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net/tls: add helper for testing if socket is RX offloaded

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There is currently no way for driver to reliably check that
the socket it has looked up is in fact RX offloaded. Add
a helper. This allows drivers to catch misbehaving firmware.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2019-12-17 14:12:01 -08:00 • committed by David S. Miller
parent 572c724518
commit 8d5a49e9e3
2 changed files with 12 additions and 2 deletions
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5
net/tls/tls_device.c
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@ -178,7 +178,7 @@ static void tls_icsk_clean_acked(struct sock *sk, u32 acked_seq)
* socket and no in-flight SKBs associated with this
* socket, so it is safe to free all the resources.
*/
static void tls_device_sk_destruct(struct sock *sk)
void tls_device_sk_destruct(struct sock *sk)
{
struct tls_context *tls_ctx = tls_get_ctx(sk);
struct tls_offload_context_tx *ctx = tls_offload_ctx_tx(tls_ctx);
@ -196,6 +196,7 @@ static void tls_device_sk_destruct(struct sock *sk)
if (refcount_dec_and_test(&tls_ctx->refcount))
tls_device_queue_ctx_destruction(tls_ctx);
}
EXPORT_SYMBOL_GPL(tls_device_sk_destruct);
void tls_device_free_resources_tx(struct sock *sk)
{
@ -903,7 +904,7 @@ static void tls_device_attach(struct tls_context *ctx, struct sock *sk,
spin_unlock_irq(&tls_device_lock);
ctx->sk_destruct = sk->sk_destruct;
sk->sk_destruct = tls_device_sk_destruct;
smp_store_release(&sk->sk_destruct, tls_device_sk_destruct);
}
}