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tls: rx: return the already-copied data on crypto error

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async crypto handler will report the socket error no need
to report it again. We can, however, let the data we already
copied be reported to user space but we need to make sure
the error will be reported next time around.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski 2022-04-11 12:19:14 -07:00 committed by David S. Miller
parent 4dcdd971b9
commit f314bfee81
1 changed files with 10 additions and 6 deletions
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16
net/tls/tls_sw.c
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@ -1744,6 +1744,11 @@ int tls_sw_recvmsg(struct sock *sk,
lock_sock(sk);
bpf_strp_enabled = sk_psock_strp_enabled(psock);
/* If crypto failed the connection is broken */
err = ctx->async_wait.err;
if (err)
goto end;
/* Process pending decrypted records. It must be non-zero-copy */
err = process_rx_list(ctx, msg, &control, 0, len, false, is_peek);
if (err < 0)
@ -1874,7 +1879,7 @@ leave_on_list:
recv_end:
if (async) {
int pending;
int ret, pending;
/* Wait for all previously submitted records to be decrypted */
spin_lock_bh(&ctx->decrypt_compl_lock);
@ -1882,11 +1887,10 @@ recv_end:
pending = atomic_read(&ctx->decrypt_pending);
spin_unlock_bh(&ctx->decrypt_compl_lock);
if (pending) {
err = crypto_wait_req(-EINPROGRESS, &ctx->async_wait);
if (err) {
/* one of async decrypt failed */
tls_err_abort(sk, err);
copied = 0;
ret = crypto_wait_req(-EINPROGRESS, &ctx->async_wait);
if (ret) {
if (err >= 0 || err == -EINPROGRESS)
err = ret;
decrypted = 0;
goto end;
}