netdev - [PATCH net-next 01/10] tls: rx: consistently use unlocked accessors for rx

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Date:   Mon, 11 Apr 2022 12:19:08 -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 01/10] tls: rx: consistently use unlocked accessors for rx_list

rx_list is protected by the socket lock, no need to take
the built-in spin lock on accesses.

Signed-off-by: Jakub Kicinski <kuba@...nel.org>
---
 net/tls/tls_sw.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c
index 2e8a896af81a..e176549216ac 100644
--- a/net/tls/tls_sw.c
+++ b/net/tls/tls_sw.c
@@ -1709,7 +1709,7 @@ static int process_rx_list(struct tls_sw_context_rx *ctx,
 		next_skb = skb_peek_next(skb, &ctx->rx_list);
 
 		if (!is_peek) {
-			skb_unlink(skb, &ctx->rx_list);
+			__skb_unlink(skb, &ctx->rx_list);
 			consume_skb(skb);
 		}
 
@@ -1827,7 +1827,7 @@ int tls_sw_recvmsg(struct sock *sk,
 
 		ctx->recv_pkt = NULL;
 		__strp_unpause(&ctx->strp);
-		skb_queue_tail(&ctx->rx_list, skb);
+		__skb_queue_tail(&ctx->rx_list, skb);
 
 		if (async) {
 			/* TLS 1.2-only, to_decrypt must be text length */
@@ -1848,7 +1848,7 @@ int tls_sw_recvmsg(struct sock *sk,
 				if (err != __SK_PASS) {
 					rxm->offset = rxm->offset + rxm->full_len;
 					rxm->full_len = 0;
-					skb_unlink(skb, &ctx->rx_list);
+					__skb_unlink(skb, &ctx->rx_list);
 					if (err == __SK_DROP)
 						consume_skb(skb);
 					continue;
@@ -1876,7 +1876,7 @@ int tls_sw_recvmsg(struct sock *sk,
 		decrypted += chunk;
 		len -= chunk;
 
-		skb_unlink(skb, &ctx->rx_list);
+		__skb_unlink(skb, &ctx->rx_list);
 		consume_skb(skb);
 
 		/* Return full control message to userspace before trying
@@ -2176,7 +2176,7 @@ void tls_sw_release_resources_rx(struct sock *sk)
 	if (ctx->aead_recv) {
 		kfree_skb(ctx->recv_pkt);
 		ctx->recv_pkt = NULL;
-		skb_queue_purge(&ctx->rx_list);
+		__skb_queue_purge(&ctx->rx_list);
 		crypto_free_aead(ctx->aead_recv);
 		strp_stop(&ctx->strp);
 		/* If tls_sw_strparser_arm() was not called (cleanup paths)
-- 
2.34.1