From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-f67.google.com (mail-wm0-f67.google.com [74.125.82.67]) by dpdk.org (Postfix) with ESMTP id 755201C3A3 for ; Thu, 5 Jul 2018 10:45:58 +0200 (CEST) Received: by mail-wm0-f67.google.com with SMTP id s13-v6so988010wmc.1 for ; Thu, 05 Jul 2018 01:45:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=6wind-com.20150623.gappssmtp.com; s=20150623; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to; bh=4qelGfXDR0NYqw3vkex8nX1rMGAhfI/j9iDIJOyh370=; b=a5sVCA5aPwK2WiBVREF7uGQopLKM3JQr/2oWFjAJydgmfQjWMS4qlojUz0ruFKP6QH e5BdaCp0spKrbXKzp71UOhHqlaVplbnM1mzK/qpNaezWq7nWWfzMezNrLEHiz5/I+jZF rUAtK5ITQubK6pR1JY9gGbHcbKBpUnaY94FFaVF1eioncIrrVRLaN5TfbQKrLzysy91D P0e5MgZRO6XfbmOmgPwmO+wcAlKA1ejezu+5AZlSeGPzuKXugCgvPYH3jZZlBoJP4l4a ptqbvnVgHoLb2zZ3/o82ge4g0AtYeEbiByGposH/OWpEX9EEiRqRAIxRwGvkj13JK9dI Ec/Q== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to; bh=4qelGfXDR0NYqw3vkex8nX1rMGAhfI/j9iDIJOyh370=; b=fhL4ZuVRd6A9hreJRzk0yL2JxSAHfyCvyD7iQkZuxHC4/8wKdUgN2j6tUH/lvA2/+b uqhrHeJ6rpgajXtHdKPxa3TcUrrehCbumq1uQRFg7bjN4+nj+vmgYv0hr8av2wDr3scP sX9y+TdHcMvJGNzwOFO9VOnEoCOP0hkz/WJe344sEU4esWZRO+jeALWaquToH5WKfKb3 xwfSsEdZWBM5iM8t6FPEXnWTgnDMCE1y4YX3yLkbol7TrH6MSC+58JA07AoPgftWse9r 7cqg4gIgEHE9HMPL3ejmKBAlhIWaxeNx6WBpndFAD1xlN4X0nI9qcKFw5nYwXWJDzUsG eSrw== X-Gm-Message-State: APt69E18P6imuWr8iKXro21PEw0v/BlLvaU/R4iDBhE1hTbqpd7zkmdv ohisYmqg2IbHMmSkGL84jzpf6A== X-Google-Smtp-Source: AAOMgpcLMc3k+a5XIuTLdVC8hDKsXO10G8D9T5RW9hbyk7hUPbjeQOzKTN5Itv5p5LvtjOo/3QvusQ== X-Received: by 2002:adf:bc92:: with SMTP id g18-v6mr3820550wrh.266.1530780358202; Thu, 05 Jul 2018 01:45:58 -0700 (PDT) Received: from 6wind.com (host.78.145.23.62.rev.coltfrance.com. [62.23.145.78]) by smtp.gmail.com with ESMTPSA id 24-v6sm14879322wrz.94.2018.07.05.01.45.57 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 05 Jul 2018 01:45:57 -0700 (PDT) Date: Thu, 5 Jul 2018 10:45:41 +0200 From: Adrien Mazarguil To: Shahaf Shuler Cc: dev@dpdk.org Message-ID: <20180705083934.5535-10-adrien.mazarguil@6wind.com> References: <20180704172322.22571-1-adrien.mazarguil@6wind.com> <20180705083934.5535-1-adrien.mazarguil@6wind.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180705083934.5535-1-adrien.mazarguil@6wind.com> X-Mailer: git-send-email 2.11.0 Subject: [dpdk-dev] [PATCH v4 09/10] net/mlx5: add parameter for port representors X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 05 Jul 2018 08:45:58 -0000 Prior to this patch, all port representors detected on a given device were probed and Ethernet devices instantiated for each of them. This patch adds support for the standard "representor" parameter, which implies that port representors are not probed by default anymore, except for the list provided through device arguments. (Patch based on prior work from Yuanhan Liu) Signed-off-by: Adrien Mazarguil Reviewed-by: Xueming Li -- v3 changes: - Adapted representor detection to the reworked mlx5_dev_spawn(). v2 changes: - Added error message for when rte_eth_devargs_parse() fails. --- doc/guides/nics/mlx5.rst | 12 ++++++++ doc/guides/prog_guide/poll_mode_drv.rst | 2 ++ drivers/net/mlx5/mlx5.c | 41 ++++++++++++++++++++++++++-- 3 files changed, 52 insertions(+), 3 deletions(-) diff --git a/doc/guides/nics/mlx5.rst b/doc/guides/nics/mlx5.rst index 7dd9c1c5e..0d0d21727 100644 --- a/doc/guides/nics/mlx5.rst +++ b/doc/guides/nics/mlx5.rst @@ -392,6 +392,18 @@ Run-time configuration Disabled by default. +- ``representor`` parameter [list] + + This parameter can be used to instantiate DPDK Ethernet devices from + existing port (or VF) representors configured on the device. + + It is a standard parameter whose format is described in + :ref:`ethernet_device_standard_device_arguments`. + + For instance, to probe port representors 0 through 2:: + + representor=[0-2] + Firmware configuration ~~~~~~~~~~~~~~~~~~~~~~ diff --git a/doc/guides/prog_guide/poll_mode_drv.rst b/doc/guides/prog_guide/poll_mode_drv.rst index 4b69f6cbe..b2cf48354 100644 --- a/doc/guides/prog_guide/poll_mode_drv.rst +++ b/doc/guides/prog_guide/poll_mode_drv.rst @@ -360,6 +360,8 @@ Ethernet Device API The Ethernet device API exported by the Ethernet PMDs is described in the *DPDK API Reference*. +.. _ethernet_device_standard_device_arguments: + Ethernet Device Standard Device Arguments ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c index 6592480bf..12a77afa8 100644 --- a/drivers/net/mlx5/mlx5.c +++ b/drivers/net/mlx5/mlx5.c @@ -92,6 +92,9 @@ /* Activate Netlink support in VF mode. */ #define MLX5_VF_NL_EN "vf_nl_en" +/* Select port representors to instantiate. */ +#define MLX5_REPRESENTOR "representor" + #ifndef HAVE_IBV_MLX5_MOD_MPW #define MLX5DV_CONTEXT_FLAGS_MPW_ALLOWED (1 << 2) #define MLX5DV_CONTEXT_FLAGS_ENHANCED_MPW (1 << 3) @@ -443,6 +446,9 @@ mlx5_args_check(const char *key, const char *val, void *opaque) struct mlx5_dev_config *config = opaque; unsigned long tmp; + /* No-op, port representors are processed in mlx5_dev_spawn(). */ + if (!strcmp(MLX5_REPRESENTOR, key)) + return 0; errno = 0; tmp = strtoul(val, NULL, 0); if (errno) { @@ -515,6 +521,7 @@ mlx5_args(struct mlx5_dev_config *config, struct rte_devargs *devargs) MLX5_RX_VEC_EN, MLX5_L3_VXLAN_EN, MLX5_VF_NL_EN, + MLX5_REPRESENTOR, NULL, }; struct rte_kvargs *kvlist; @@ -672,7 +679,9 @@ mlx5_uar_init_secondary(struct rte_eth_dev *dev) * * @return * A valid Ethernet device object on success, NULL otherwise and rte_errno - * is set. + * is set. The following error is defined: + * + * EBUSY: device is not supposed to be spawned. */ static struct rte_eth_dev * mlx5_dev_spawn(struct rte_device *dpdk_dev, @@ -723,6 +732,26 @@ mlx5_dev_spawn(struct rte_device *dpdk_dev, int own_domain_id = 0; unsigned int i; + /* Determine if this port representor is supposed to be spawned. */ + if (switch_info->representor && dpdk_dev->devargs) { + struct rte_eth_devargs eth_da; + + err = rte_eth_devargs_parse(dpdk_dev->devargs->args, ð_da); + if (err) { + rte_errno = -err; + DRV_LOG(ERR, "failed to process device arguments: %s", + strerror(rte_errno)); + return NULL; + } + for (i = 0; i < eth_da.nb_representor_ports; ++i) + if (eth_da.representor_ports[i] == + (uint16_t)switch_info->port_name) + break; + if (i == eth_da.nb_representor_ports) { + rte_errno = EBUSY; + return NULL; + } + } /* Prepare shared data between primary and secondary process. */ mlx5_prepare_shared_data(); errno = 0; @@ -1343,8 +1372,12 @@ mlx5_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, list[i].eth_dev = mlx5_dev_spawn (&pci_dev->device, list[i].ibv_dev, vf, &list[i].info); - if (!list[i].eth_dev) - break; + if (!list[i].eth_dev) { + if (rte_errno != EBUSY) + break; + /* Device is disabled, ignore it. */ + continue; + } restore = list[i].eth_dev->data->dev_flags; rte_eth_copy_pci_info(list[i].eth_dev, pci_dev); /* Restore non-PCI flags cleared by the above call. */ @@ -1370,6 +1403,8 @@ mlx5_pci_probe(struct rte_pci_driver *pci_drv __rte_unused, ret = -rte_errno; /* Roll back. */ while (i--) { + if (!list[i].eth_dev) + continue; mlx5_dev_close(list[i].eth_dev); if (rte_eal_process_type() == RTE_PROC_PRIMARY) rte_free(list[i].eth_dev->data->dev_private); -- 2.11.0