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tls: Fill software context without allocation

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This patch allows tls_set_sw_offload to fill the context in case it was
already allocated previously.

We will use it in TLS_DEVICE to fill the RX software context.

Signed-off-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Boris Pismenny 2018-07-13 14:33:42 +03:00 committed by David S. Miller
parent 39f56e1a78
commit b190a587c6
1 changed files with 22 additions and 12 deletions
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14
net/tls/tls_sw.c
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@ -1081,28 +1081,38 @@ int tls_set_sw_offload(struct sock *sk, struct tls_context *ctx, int tx)
} }
if (tx) { if (tx) {
if (!ctx->priv_ctx_tx) {
sw_ctx_tx = kzalloc(sizeof(*sw_ctx_tx), GFP_KERNEL); sw_ctx_tx = kzalloc(sizeof(*sw_ctx_tx), GFP_KERNEL);
if (!sw_ctx_tx) { if (!sw_ctx_tx) {
rc = -ENOMEM; rc = -ENOMEM;
goto out; goto out;
} }
crypto_init_wait(&sw_ctx_tx->async_wait);
ctx->priv_ctx_tx = sw_ctx_tx; ctx->priv_ctx_tx = sw_ctx_tx;
} else { } else {
sw_ctx_tx =
(struct tls_sw_context_tx *)ctx->priv_ctx_tx;
}
} else {
if (!ctx->priv_ctx_rx) {
sw_ctx_rx = kzalloc(sizeof(*sw_ctx_rx), GFP_KERNEL); sw_ctx_rx = kzalloc(sizeof(*sw_ctx_rx), GFP_KERNEL);
if (!sw_ctx_rx) { if (!sw_ctx_rx) {
rc = -ENOMEM; rc = -ENOMEM;
goto out; goto out;
} }
crypto_init_wait(&sw_ctx_rx->async_wait);
ctx->priv_ctx_rx = sw_ctx_rx; ctx->priv_ctx_rx = sw_ctx_rx;
} else {
sw_ctx_rx =
(struct tls_sw_context_rx *)ctx->priv_ctx_rx;
}
} }
if (tx) { if (tx) {
crypto_init_wait(&sw_ctx_tx->async_wait);
crypto_info = &ctx->crypto_send; crypto_info = &ctx->crypto_send;
cctx = &ctx->tx; cctx = &ctx->tx;
aead = &sw_ctx_tx->aead_send; aead = &sw_ctx_tx->aead_send;
} else { } else {
crypto_init_wait(&sw_ctx_rx->async_wait);
crypto_info = &ctx->crypto_recv; crypto_info = &ctx->crypto_recv;
cctx = &ctx->rx; cctx = &ctx->rx;
aead = &sw_ctx_rx->aead_recv; aead = &sw_ctx_rx->aead_recv;