From patchwork Sun Aug 30 14:38:10 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Deepak Kumar Singh X-Patchwork-Id: 11745145 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1B3CB739 for ; Sun, 30 Aug 2020 14:40:39 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0422620BED for ; Sun, 30 Aug 2020 14:40:39 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (1024-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="RU/5dtxt" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727833AbgH3Ok0 (ORCPT ); Sun, 30 Aug 2020 10:40:26 -0400 Received: from mail29.static.mailgun.info ([104.130.122.29]:17737 "EHLO mail29.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726411AbgH3Ojo (ORCPT ); Sun, 30 Aug 2020 10:39:44 -0400 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1598798383; h=References: In-Reply-To: Message-Id: Date: Subject: Cc: To: From: Sender; bh=PSFObMXbhORUF5AdMyNhKvu4kdYQ+ZI6KvZNhNgbpdY=; b=RU/5dtxtUbieDYFn7IHI02VyZBbwv83qXv59Xeyf5pIO9qRorj5Pqs+sH+eYmmpjcxffY4/H qGhhnFb5FP9kJ/ImT4fP/xNuRDousO1rJy6gppoIfIqfe3LlEVZlAGQJ14kh04nJVuvlz1Vp DreRnoo9gpHrYLJq7Kulz/jKJ70= X-Mailgun-Sending-Ip: 104.130.122.29 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by smtp-out-n01.prod.us-east-1.postgun.com with SMTP id 5f4bb9f912acec35e2847a7a (version=TLS1.2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256); Sun, 30 Aug 2020 14:38:49 GMT Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 9C275C433CB; Sun, 30 Aug 2020 14:38:48 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from deesin-linux.qualcomm.com (unknown [202.46.22.19]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: deesin) by smtp.codeaurora.org (Postfix) with ESMTPSA id 34CB5C433CA; Sun, 30 Aug 2020 14:38:42 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 34CB5C433CA Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=deesin@codeaurora.org From: Deepak Kumar Singh To: bjorn.andersson@linaro.org, clew@codeaurora.org Cc: mathieu.poirier@linaro.org, linux-arm-msm@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-kernel@vger.kernel.org, "David S. Miller" , Jakub Kicinski , Manivannan Sadhasivam , Carl Huang , Necip Fazil Yildiran , netdev@vger.kernel.org (open list:NETWORKING [GENERAL]) Subject: [PATCH V1 2/4] net: qrtr: Add socket mode optimization Date: Sun, 30 Aug 2020 20:08:10 +0530 Message-Id: <1598798292-5971-3-git-send-email-deesin@codeaurora.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1598798292-5971-1-git-send-email-deesin@codeaurora.org> References: <1598798292-5971-1-git-send-email-deesin@codeaurora.org> Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Chris Lew A remote endpoint should not need to know when a client socket is freed if the socket never established commnication with the endpoint. Add a mode to keep track of which endpoints a socket communicates with. There are three modes a socket can be in: INIT - Socket has not sent anything or only local messages, only send client close to local services. SINGLE - Socket has sent messages to a single ept, send event to this single ept. MULTI - Socket has sent messages to multiple epts, broadcast release of this socket. Server state changes should be broadcast throughout the system. Change the ipc state of a port when it sends a NEW SERVER control packet. This ensures the DEL CLIENT control packet is propagated correctly for servers. --- net/qrtr/qrtr.c | 72 ++++++++++++++++++++++++++++++++++++++++++++++----------- 1 file changed, 59 insertions(+), 13 deletions(-) diff --git a/net/qrtr/qrtr.c b/net/qrtr/qrtr.c index d9858a1..4496b75 100644 --- a/net/qrtr/qrtr.c +++ b/net/qrtr/qrtr.c @@ -21,6 +21,10 @@ #define QRTR_MIN_EPH_SOCKET 0x4000 #define QRTR_MAX_EPH_SOCKET 0x7fff +/* qrtr socket states */ +#define QRTR_STATE_MULTI -2 +#define QRTR_STATE_INIT -1 + /** * struct qrtr_hdr_v1 - (I|R)PCrouter packet header version 1 * @version: protocol version @@ -87,6 +91,8 @@ struct qrtr_sock { struct sock sk; struct sockaddr_qrtr us; struct sockaddr_qrtr peer; + + int state; }; static inline struct qrtr_sock *qrtr_sk(struct sock *sk) @@ -653,29 +659,59 @@ static void qrtr_port_put(struct qrtr_sock *ipc) sock_put(&ipc->sk); } -/* Remove port assignment. */ -static void qrtr_port_remove(struct qrtr_sock *ipc) +static void qrtr_send_del_client(struct qrtr_sock *ipc) { struct qrtr_ctrl_pkt *pkt; - struct sk_buff *skb; - int port = ipc->us.sq_port; struct sockaddr_qrtr to; + struct qrtr_node *node; + struct sk_buff *skbn; + struct sk_buff *skb; + int type = QRTR_TYPE_DEL_CLIENT; + + skb = qrtr_alloc_ctrl_packet(&pkt); + if (!skb) + return; to.sq_family = AF_QIPCRTR; to.sq_node = QRTR_NODE_BCAST; to.sq_port = QRTR_PORT_CTRL; - skb = qrtr_alloc_ctrl_packet(&pkt); - if (skb) { - pkt->cmd = cpu_to_le32(QRTR_TYPE_DEL_CLIENT); - pkt->client.node = cpu_to_le32(ipc->us.sq_node); - pkt->client.port = cpu_to_le32(ipc->us.sq_port); + pkt->cmd = cpu_to_le32(QRTR_TYPE_DEL_CLIENT); + pkt->client.node = cpu_to_le32(ipc->us.sq_node); + pkt->client.port = cpu_to_le32(ipc->us.sq_port); + + skb_set_owner_w(skb, &ipc->sk); - skb_set_owner_w(skb, &ipc->sk); - qrtr_bcast_enqueue(NULL, skb, QRTR_TYPE_DEL_CLIENT, &ipc->us, - &to); + if (ipc->state == QRTR_STATE_MULTI) { + qrtr_bcast_enqueue(NULL, skb, type, &ipc->us, &to); + return; + } + + if (ipc->state > QRTR_STATE_INIT) { + node = qrtr_node_lookup(ipc->state); + if (!node) + goto exit; + + skbn = skb_clone(skb, GFP_KERNEL); + if (!skbn) { + qrtr_node_release(node); + goto exit; + } + + skb_set_owner_w(skbn, &ipc->sk); + qrtr_node_enqueue(node, skbn, type, &ipc->us, &to); + qrtr_node_release(node); } +exit: + qrtr_local_enqueue(NULL, skb, type, &ipc->us, &to); +} +/* Remove port assignment. */ +static void qrtr_port_remove(struct qrtr_sock *ipc) +{ + int port = ipc->us.sq_port; + + qrtr_send_del_client(ipc); if (port == QRTR_PORT_CTRL) port = 0; @@ -941,6 +977,11 @@ static int qrtr_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) return -ECONNRESET; } enqueue_fn = qrtr_node_enqueue; + + if (ipc->state > QRTR_STATE_INIT && ipc->state != node->nid) + ipc->state = QRTR_STATE_MULTI; + else if (ipc->state == QRTR_STATE_INIT) + ipc->state = node->nid; } plen = (len + 3) & ~3; @@ -957,7 +998,8 @@ static int qrtr_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) goto out_node; } - if (ipc->us.sq_port == QRTR_PORT_CTRL) { + if (ipc->us.sq_port == QRTR_PORT_CTRL || + addr->sq_port == QRTR_PORT_CTRL) { if (len < 4) { rc = -EINVAL; kfree_skb(skb); @@ -969,6 +1011,9 @@ static int qrtr_sendmsg(struct socket *sock, struct msghdr *msg, size_t len) } type = le32_to_cpu(qrtr_type); + if (addr->sq_port == QRTR_PORT_CTRL && type == QRTR_TYPE_NEW_SERVER) + ipc->state = QRTR_STATE_MULTI; + rc = enqueue_fn(node, skb, type, &ipc->us, addr); if (rc >= 0) rc = len; @@ -1256,6 +1301,7 @@ static int qrtr_create(struct net *net, struct socket *sock, ipc->us.sq_family = AF_QIPCRTR; ipc->us.sq_node = qrtr_local_nid; ipc->us.sq_port = 0; + ipc->state = QRTR_STATE_INIT; return 0; }