netdev - [PATCH net-next 08/10] tls: rx: don't issue wake ups when data is decrypted

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Message-Id: <20220408033823.965896-9-kuba@kernel.org>
Date:   Thu,  7 Apr 2022 20:38:21 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     davem@...emloft.net, pabeni@...hat.com
Cc:     netdev@...r.kernel.org, borisp@...dia.com,
        john.fastabend@...il.com, daniel@...earbox.net,
        vfedorenko@...ek.ru, Jakub Kicinski <kuba@...nel.org>
Subject: [PATCH net-next 08/10] tls: rx: don't issue wake ups when data is decrypted

We inform the applications that data is available when
the record is received. Decryption happens inline inside
recvmsg or splice call. Generating another wakeup inside
the decryption handler seems pointless as someone must
be actively reading the socket if we are executing this
code.

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
 net/tls/tls_sw.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 9729244ce3fc..1f6bb1f67f41 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -1561,7 +1561,6 @@ static int decrypt_skb_update(struct sock *sk, struct sk_buff *skb,
 			      bool async)
 {
 	struct tls_context *tls_ctx = tls_get_ctx(sk);
-	struct tls_sw_context_rx *ctx = tls_sw_ctx_rx(tls_ctx);
 	struct tls_prot_info *prot = &tls_ctx->prot_info;
 	struct strp_msg *rxm = strp_msg(skb);
 	struct tls_msg *tlm = tls_msg(skb);
@@ -1600,7 +1599,6 @@ static int decrypt_skb_update(struct sock *sk, struct sk_buff *skb,
 		rxm->full_len -= prot->overhead_size;
 		tls_advance_record_sn(sk, prot, &tls_ctx->rx);
 		tlm->decrypted = 1;
-		ctx->saved_data_ready(sk);
 	} else {
 		*zc = false;
 	}
-- 
2.34.1