From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from dpdk.org (dpdk.org [92.243.14.124]) by inbox.dpdk.org (Postfix) with ESMTP id AFC72A0093 for ; Tue, 19 May 2020 15:08:08 +0200 (CEST) Received: from [92.243.14.124] (localhost [127.0.0.1]) by dpdk.org (Postfix) with ESMTP id A4A3B1D603; Tue, 19 May 2020 15:08:08 +0200 (CEST) Received: from mail-wr1-f68.google.com (mail-wr1-f68.google.com [209.85.221.68]) by dpdk.org (Postfix) with ESMTP id 6034E1D67B for ; Tue, 19 May 2020 15:08:07 +0200 (CEST) Received: by mail-wr1-f68.google.com with SMTP id e16so15826685wra.7 for ; Tue, 19 May 2020 06:08:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=CyNzjDECdJ6iUTaGnKU9sTQVmLsIqAsKTxvVLMTJWlA=; b=W8ybWN0jVugRjQZA/VqKc34ctI8z6/r5l1OAL2Icxb0zJq4A+LtyEUGjoynvo5Y+5V J24B+S1LeW7IoETQRoku1XClH1sBSPfj1QIJUOaBJEt7zQB43esm23P4XfXcOoirMlrI YBuUuAg5BdxXQOjr/3pEXv5V6N0THJ5BxPRxZbQcZB2RWeki773mr8ZpeTv9FUTB9sWZ IXYud8RcYz98opwuPrdSyoaKapSdBBuQgP4SQzK8c7GJZ+HiwflkhzKJ3D00orP/Fk9s RKBSdakx/ZSYSjGy9jh7wRMRMAvI3BtuUGFMf2fUnD9uq3YaFEY3x8IxYysLC6BTKqjB ZYhw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=CyNzjDECdJ6iUTaGnKU9sTQVmLsIqAsKTxvVLMTJWlA=; b=VQuLm9NpVYlG6ILRYZr0zQEDjYrJtKmErmX2wgTUJP2BvjQB6Yg/dv/c62+22rGVYL +lXMkl0mm5dWS+RLZgBIcpQEKue8tBRxSUmxpXMvLJkbR7DPL/ecBbVpnyugJljRVYIa r80okmsd+aIjOv2b0pldajBCBtyC7EJoqhm3t77tA0BbZqq02Qw6Q/ykwGLiTv7wC4Mj s7vqdEeOs1kleGpNN09vF1Lo0pQmCtSUhK89A25Ou8CPFM1Pr/sejBKyYOkzk/NUR069 /GccTrKrNKJ8YGdtTzKvCcMINK75DQTPaFEWJx200+d7I91I1LBXTmRyRW2RpJNM/u+C oL8g== X-Gm-Message-State: AOAM533pBisGI5GQWxtqS/XhPWv1HwaM6pz+uJe+D41aF4r0iyl5xT0b eeL1FGMfcy5cdcawWBY5O+c= X-Google-Smtp-Source: ABdhPJzjB6CMGEROf2sgFgIsNebUgmG1SLBb9/OgH27jvegcJXow78T+KsDWSHpWeon8wR3HToZ6/g== X-Received: by 2002:adf:afe9:: with SMTP id y41mr27792795wrd.56.1589893687071; Tue, 19 May 2020 06:08:07 -0700 (PDT) Received: from localhost ([88.98.246.218]) by smtp.gmail.com with ESMTPSA id n7sm21049375wro.94.2020.05.19.06.08.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 19 May 2020 06:08:06 -0700 (PDT) From: luca.boccassi@gmail.com To: Stephen Hemminger Cc: dpdk stable Date: Tue, 19 May 2020 14:02:58 +0100 Message-Id: <20200519130549.112823-43-luca.boccassi@gmail.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200519130549.112823-1-luca.boccassi@gmail.com> References: <20200519125804.104349-1-luca.boccassi@gmail.com> <20200519130549.112823-1-luca.boccassi@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Subject: [dpdk-stable] patch 'net/netvsc: handle Rx packets during multi-channel setup' has been queued to stable release 19.11.3 X-BeenThere: stable@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches for DPDK stable branches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: stable-bounces@dpdk.org Sender: "stable" Hi, FYI, your patch has been queued to stable release 19.11.3 Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet. It will be pushed if I get no objections before 05/21/20. So please shout if anyone has objections. Also note that after the patch there's a diff of the upstream commit vs the patch applied to the branch. This will indicate if there was any rebasing needed to apply to the stable branch. If there were code changes for rebasing (ie: not only metadata diffs), please double check that the rebase was correctly done. Thanks. Luca Boccassi --- >From 244193073d217876eb9c40b9acb48e9a42cd5eaf Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Tue, 31 Mar 2020 10:13:58 -0700 Subject: [PATCH] net/netvsc: handle Rx packets during multi-channel setup [ upstream commit 107f3cf31047e09a146e8ebc3d232f3de9d55466 ] It is possible for a packet to arrive during the configuration process when setting up multiple queue mode. This would cause configure to fail; fix by just ignoring receive packets while waiting for control commands. Use the receive ring lock to avoid possible races between oddly behaved applications doing rx_burst and control operations concurrently. Fixes: 4e9c73e96e83 ("net/netvsc: add Hyper-V network device") Signed-off-by: Stephen Hemminger --- drivers/net/netvsc/hn_nvs.c | 41 +++++++++++++++++++++++++++++++++++-- 1 file changed, 39 insertions(+), 2 deletions(-) diff --git a/drivers/net/netvsc/hn_nvs.c b/drivers/net/netvsc/hn_nvs.c index 6b518685ab..477202b2a0 100644 --- a/drivers/net/netvsc/hn_nvs.c +++ b/drivers/net/netvsc/hn_nvs.c @@ -54,7 +54,7 @@ static int hn_nvs_req_send(struct hn_data *hv, } static int -hn_nvs_execute(struct hn_data *hv, +__hn_nvs_execute(struct hn_data *hv, void *req, uint32_t reqlen, void *resp, uint32_t resplen, uint32_t type) @@ -62,6 +62,7 @@ hn_nvs_execute(struct hn_data *hv, struct vmbus_channel *chan = hn_primary_chan(hv); char buffer[NVS_RESPSIZE_MAX]; const struct hn_nvs_hdr *hdr; + uint64_t xactid; uint32_t len; int ret; @@ -77,7 +78,7 @@ hn_nvs_execute(struct hn_data *hv, retry: len = sizeof(buffer); - ret = rte_vmbus_chan_recv(chan, buffer, &len, NULL); + ret = rte_vmbus_chan_recv(chan, buffer, &len, &xactid); if (ret == -EAGAIN) { rte_delay_us(HN_CHAN_INTERVAL_US); goto retry; @@ -88,7 +89,20 @@ hn_nvs_execute(struct hn_data *hv, return ret; } + if (len < sizeof(*hdr)) { + PMD_DRV_LOG(ERR, "response missing NVS header"); + return -EINVAL; + } + hdr = (struct hn_nvs_hdr *)buffer; + + /* Silently drop received packets while waiting for response */ + if (hdr->type == NVS_TYPE_RNDIS) { + hn_nvs_ack_rxbuf(chan, xactid); + --hv->rxbuf_outstanding; + goto retry; + } + if (hdr->type != type) { PMD_DRV_LOG(ERR, "unexpected NVS resp %#x, expect %#x", hdr->type, type); @@ -108,6 +122,29 @@ hn_nvs_execute(struct hn_data *hv, return 0; } + +/* + * Execute one control command and get the response. + * Only one command can be active on a channel at once + * Unlike BSD, DPDK does not have an interrupt context + * so the polling is required to wait for response. + */ +static int +hn_nvs_execute(struct hn_data *hv, + void *req, uint32_t reqlen, + void *resp, uint32_t resplen, + uint32_t type) +{ + struct hn_rx_queue *rxq = hv->primary; + int ret; + + rte_spinlock_lock(&rxq->ring_lock); + ret = __hn_nvs_execute(hv, req, reqlen, resp, resplen, type); + rte_spinlock_unlock(&rxq->ring_lock); + + return ret; +} + static int hn_nvs_doinit(struct hn_data *hv, uint32_t nvs_ver) { -- 2.20.1 --- Diff of the applied patch vs upstream commit (please double-check if non-empty: --- --- - 2020-05-19 14:04:46.305196628 +0100 +++ 0043-net-netvsc-handle-Rx-packets-during-multi-channel-se.patch 2020-05-19 14:04:44.180647720 +0100 @@ -1,8 +1,10 @@ -From 107f3cf31047e09a146e8ebc3d232f3de9d55466 Mon Sep 17 00:00:00 2001 +From 244193073d217876eb9c40b9acb48e9a42cd5eaf Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Tue, 31 Mar 2020 10:13:58 -0700 Subject: [PATCH] net/netvsc: handle Rx packets during multi-channel setup +[ upstream commit 107f3cf31047e09a146e8ebc3d232f3de9d55466 ] + It is possible for a packet to arrive during the configuration process when setting up multiple queue mode. This would cause configure to fail; fix by just ignoring receive packets while @@ -13,7 +15,6 @@ concurrently. Fixes: 4e9c73e96e83 ("net/netvsc: add Hyper-V network device") -Cc: stable@dpdk.org Signed-off-by: Stephen Hemminger ---