netdev - [PATCH net-next] net/tls: Do not call msg_data

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Message-Id: <20180724111118.15415-1-vakul.garg@nxp.com>
Date:   Tue, 24 Jul 2018 16:41:18 +0530
From:   Vakul Garg <vakul.garg@....com>
To:     netdev@...r.kernel.org
Cc:     borisp@...lanox.com, aviadye@...lanox.com, davejwatson@...com,
        davem@...emloft.net, Vakul Garg <vakul.garg@....com>
Subject: [PATCH net-next] net/tls: Do not call msg_data_left() twice

In function tls_sw_sendmsg(), msg_data_left() needs to be called only
once. The second invocation of msg_data_left() for assigning variable
try_to_copy can be removed and merged with the first one.

Signed-off-by: Vakul Garg <vakul.garg@....com>
---
 net/tls/tls_sw.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 0c2d029c9d4c..fd51ce65b99c 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -377,7 +377,7 @@ int tls_sw_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
 			goto send_end;
 	}
 
-	while (msg_data_left(msg)) {
+	while ((try_to_copy = msg_data_left(msg))) {
 		if (sk->sk_err) {
 			ret = -sk->sk_err;
 			goto send_end;
@@ -385,7 +385,6 @@ int tls_sw_sendmsg(struct sock *sk, struct msghdr *msg, size_t size)
 
 		orig_size = ctx->sg_plaintext_size;
 		full_record = false;
-		try_to_copy = msg_data_left(msg);
 		record_room = TLS_MAX_PAYLOAD_SIZE - ctx->sg_plaintext_size;
 		if (try_to_copy >= record_room) {
 			try_to_copy = record_room;
-- 
2.13.6