netdev - [PATCH net-next] net/tls: Replace kfree_skb() with consume

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Message-ID: <20190321014903.2103-1-vakul.garg@nxp.com>
Date:   Thu, 21 Mar 2019 01:51:53 +0000
From:   Vakul Garg <vakul.garg@....com>
To:     "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:     "borisp@...lanox.com" <borisp@...lanox.com>,
        "aviadye@...lanox.com" <aviadye@...lanox.com>,
        "davejwatson@...com" <davejwatson@...com>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "doronrk@...com" <doronrk@...com>, Vakul Garg <vakul.garg@....com>
Subject: [PATCH net-next] net/tls: Replace kfree_skb() with consume_skb()

To free the skb in normal course of processing, consume_skb() should be
used. Only for failure paths, skb_free() is intended to be used.

https://www.kernel.org/doc/htmldocs/networking/API-consume-skb.html

Signed-off-by: Vakul Garg <vakul.garg@....com>
---
 net/tls/tls_sw.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 425351ac2a9b..3f0e7f6b1020 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -225,7 +225,7 @@ static int tls_do_decryption(struct sock *sk,
 		/* Using skb->sk to push sk through to crypto async callback
 		 * handler. This allows propagating errors up to the socket
 		 * if needed. It _must_ be cleared in the async handler
-		 * before kfree_skb is called. We _know_ skb->sk is NULL
+		 * before consume_skb is called. We _know_ skb->sk is NULL
 		 * because it is a clone from strparser.
 		 */
 		skb->sk = sk;
@@ -1522,7 +1522,7 @@ static bool tls_sw_advance_skb(struct sock *sk, struct sk_buff *skb,
 			rxm->full_len -= len;
 			return false;
 		}
-		kfree_skb(skb);
+		consume_skb(skb);
 	}
 
 	/* Finished with message */
@@ -1631,7 +1631,7 @@ static int process_rx_list(struct tls_sw_context_rx *ctx,
 
 		if (!is_peek) {
 			skb_unlink(skb, &ctx->rx_list);
-			kfree_skb(skb);
+			consume_skb(skb);
 		}
 
 		skb = next_skb;
@@ -2090,7 +2090,7 @@ void tls_sw_release_resources_rx(struct sock *sk)
 	struct tls_sw_context_rx *ctx = tls_sw_ctx_rx(tls_ctx);
 
 	if (ctx->aead_recv) {
-		kfree_skb(ctx->recv_pkt);
+		consume_skb(ctx->recv_pkt);
 		ctx->recv_pkt = NULL;
 		skb_queue_purge(&ctx->rx_list);
 		crypto_free_aead(ctx->aead_recv);
-- 
2.13.6