From 5b053e121ffdec851dc3a7046e9bece287a3c5b1 Mon Sep 17 00:00:00 2001 From: Dave Watson Date: Wed, 30 Jan 2019 22:08:21 +0000 Subject: net: tls: Set async_capable for tls zerocopy only if we see EINPROGRESS Currently we don't zerocopy if the crypto framework async bit is set. However some crypto algorithms (such as x86 AESNI) support async, but in the context of sendmsg, will never run asynchronously. Instead, check for actual EINPROGRESS return code before assuming algorithm is async. Signed-off-by: Dave Watson Signed-off-by: David S. Miller --- include/net/tls.h | 1 + net/tls/tls_sw.c | 4 ++-- 2 files changed, 3 insertions(+), 2 deletions(-) diff --git a/include/net/tls.h b/include/net/tls.h index 004bf01ce868..a93a8ed8f716 100644 --- a/include/net/tls.h +++ b/include/net/tls.h @@ -142,6 +142,7 @@ struct tls_sw_context_tx { struct list_head tx_list; atomic_t encrypt_pending; int async_notify; + int async_capable; #define BIT_TX_SCHEDULED 0 unsigned long tx_bitmask; diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c index 06d7ae97b929..8051a9164139 100644 --- a/net/tls/tls_sw.c +++ b/net/tls/tls_sw.c @@ -718,6 +718,7 @@ static int tls_push_record(struct sock *sk, int flags, tls_merge_open_record(sk, rec, tmp, orig_end); } } + ctx->async_capable = 1; return rc; } else if (split) { msg_pl = &tmp->msg_plaintext; @@ -859,8 +860,7 @@ int tls_sw_sendmsg(struct sock *sk, struct msghdr *msg, size_t size) long timeo = sock_sndtimeo(sk, msg->msg_flags & MSG_DONTWAIT); struct tls_context *tls_ctx = tls_get_ctx(sk); struct tls_sw_context_tx *ctx = tls_sw_ctx_tx(tls_ctx); - struct crypto_tfm *tfm = crypto_aead_tfm(ctx->aead_send); - bool async_capable = tfm->__crt_alg->cra_flags & CRYPTO_ALG_ASYNC; + bool async_capable = ctx->async_capable; unsigned char record_type = TLS_RECORD_TYPE_DATA; bool is_kvec = iov_iter_is_kvec(&msg->msg_iter); bool eor = !(msg->msg_flags & MSG_MORE); -- cgit v1.2.3-59-g8ed1b