From patchwork Mon Jul 3 09:04:43 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hannes Reinecke X-Patchwork-Id: 13299752 X-Patchwork-Delegate: kuba@kernel.org Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id EBD0C3FFF for ; Mon, 3 Jul 2023 09:04:59 +0000 (UTC) Received: from smtp-out1.suse.de (smtp-out1.suse.de [IPv6:2001:67c:2178:6::1c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CE427E4E for ; Mon, 3 Jul 2023 02:04:57 -0700 (PDT) Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out1.suse.de (Postfix) with ESMTP id 3815F218F3; Mon, 3 Jul 2023 09:04:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1688375096; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=slKVuHlQLLm38POGRVwlSA+SLJNSLb1/O0U9okq5QUI=; b=iIebFiyY8zMHzVB1lH8kChThPmkNJAQAHzrxp5z6nEqtjUrbjAWh7uWFy+UBT3Q/At20x7 FMNsDv6g7ZgFr3X8hiG/+CV+whE0/TCIiuEKJboxRaW0a17CtYj5SwV7e5WJl7K4Nq0Fhr Ay3U1oT3NC7nuRD2yPgfnMUAcBsb5xA= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1688375096; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=slKVuHlQLLm38POGRVwlSA+SLJNSLb1/O0U9okq5QUI=; b=segoq3mbJzHCBi0CTp0Rs7BDzKfz9ooY/xx/IoYvVSaU6j33UhiitLss7l0dSYM4ZczW4s 4aObjEu3csJILDBA== Received: from adalid.arch.suse.de (adalid.arch.suse.de [10.161.8.13]) by relay2.suse.de (Postfix) with ESMTP id 088022C146; Mon, 3 Jul 2023 09:04:56 +0000 (UTC) Received: by adalid.arch.suse.de (Postfix, from userid 16045) id EEB3951C5D8D; Mon, 3 Jul 2023 11:04:55 +0200 (CEST) From: Hannes Reinecke To: Sagi Grimberg Cc: Keith Busch , Christoph Hellwig , linux-nvme@lists.infradead.org, Jakub Kicinski , Eric Dumazet , Paolo Abeni , netdev@vger.kernel.org, Hannes Reinecke Subject: [PATCH 4/5] net/tls: split tls_rx_reader_lock Date: Mon, 3 Jul 2023 11:04:43 +0200 Message-Id: <20230703090444.38734-5-hare@suse.de> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20230703090444.38734-1-hare@suse.de> References: <20230703090444.38734-1-hare@suse.de> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Spam-Status: No, score=-4.4 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_MED,SPF_HELO_NONE, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net X-Patchwork-Delegate: kuba@kernel.org Split tls_rx_reader_{lock,unlock} into an 'acquire/release' and the actual locking part. With that we can use the tls_rx_reader_lock in situations where the socket is already locked. Suggested-by: Sagi Grimberg Signed-off-by: Hannes Reinecke --- net/tls/tls_sw.c | 38 ++++++++++++++++++++++---------------- 1 file changed, 22 insertions(+), 16 deletions(-) diff --git a/net/tls/tls_sw.c b/net/tls/tls_sw.c index 9aef45e870a5..d0636ea13009 100644 --- a/net/tls/tls_sw.c +++ b/net/tls/tls_sw.c @@ -1848,13 +1848,10 @@ tls_read_flush_backlog(struct sock *sk, struct tls_prot_info *prot, return sk_flush_backlog(sk); } -static int tls_rx_reader_lock(struct sock *sk, struct tls_sw_context_rx *ctx, - bool nonblock) +static int tls_rx_reader_acquire(struct sock *sk, struct tls_sw_context_rx *ctx, + bool nonblock) { long timeo; - int err; - - lock_sock(sk); timeo = sock_rcvtimeo(sk, nonblock); @@ -1868,26 +1865,30 @@ static int tls_rx_reader_lock(struct sock *sk, struct tls_sw_context_rx *ctx, !READ_ONCE(ctx->reader_present), &wait); remove_wait_queue(&ctx->wq, &wait); - if (timeo <= 0) { - err = -EAGAIN; - goto err_unlock; - } - if (signal_pending(current)) { - err = sock_intr_errno(timeo); - goto err_unlock; - } + if (timeo <= 0) + return -EAGAIN; + if (signal_pending(current)) + return sock_intr_errno(timeo); } WRITE_ONCE(ctx->reader_present, 1); return 0; +} -err_unlock: - release_sock(sk); +static int tls_rx_reader_lock(struct sock *sk, struct tls_sw_context_rx *ctx, + bool nonblock) +{ + int err; + + lock_sock(sk); + err = tls_rx_reader_acquire(sk, ctx, nonblock); + if (err) + release_sock(sk); return err; } -static void tls_rx_reader_unlock(struct sock *sk, struct tls_sw_context_rx *ctx) +static void tls_rx_reader_release(struct sock *sk, struct tls_sw_context_rx *ctx) { if (unlikely(ctx->reader_contended)) { if (wq_has_sleeper(&ctx->wq)) @@ -1899,6 +1900,11 @@ static void tls_rx_reader_unlock(struct sock *sk, struct tls_sw_context_rx *ctx) } WRITE_ONCE(ctx->reader_present, 0); +} + +static void tls_rx_reader_unlock(struct sock *sk, struct tls_sw_context_rx *ctx) +{ + tls_rx_reader_release(sk, ctx); release_sock(sk); }