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[82.239.227.177]) by smtp.gmail.com with ESMTPSA id z5sm7019178wme.5.2016.06.22.02.06.19 (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Wed, 22 Jun 2016 02:06:20 -0700 (PDT) From: Nelio Laranjeiro To: dev@dpdk.org Cc: Ferruh Yigit , Adrien Mazarguil Date: Wed, 22 Jun 2016 11:05:41 +0200 Message-Id: <1466586355-30777-12-git-send-email-nelio.laranjeiro@6wind.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1466586355-30777-1-git-send-email-nelio.laranjeiro@6wind.com> References: <1466493818-1877-1-git-send-email-nelio.laranjeiro@6wind.com> <1466586355-30777-1-git-send-email-nelio.laranjeiro@6wind.com> Subject: [dpdk-dev] [PATCH v4 11/25] mlx5: add support for configuration through kvargs X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" The intent is to replace the remaining compile-time options and environment variables with a common mean of runtime configuration. This commit only adds the kvargs handling code, subsequent commits will update the rest. Signed-off-by: Nelio Laranjeiro Signed-off-by: Adrien Mazarguil --- drivers/net/mlx5/mlx5.c | 72 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 72 insertions(+) diff --git a/drivers/net/mlx5/mlx5.c b/drivers/net/mlx5/mlx5.c index 3f45d84..98884f7 100644 --- a/drivers/net/mlx5/mlx5.c +++ b/drivers/net/mlx5/mlx5.c @@ -37,6 +37,7 @@ #include #include #include +#include #include /* Verbs header. */ @@ -57,6 +58,7 @@ #include #include #include +#include #ifdef PEDANTIC #pragma GCC diagnostic error "-pedantic" #endif @@ -237,6 +239,70 @@ mlx5_dev_idx(struct rte_pci_addr *pci_addr) return ret; } +/** + * Verify and store value for device argument. + * + * @param[in] key + * Key argument to verify. + * @param[in] val + * Value associated with key. + * @param opaque + * User data. + * + * @return + * 0 on success, negative errno value on failure. + */ +static int +mlx5_args_check(const char *key, const char *val, void *opaque) +{ + struct priv *priv = opaque; + + /* No parameters are expected at the moment. */ + (void)priv; + (void)val; + WARN("%s: unknown parameter", key); + return -EINVAL; +} + +/** + * Parse device parameters. + * + * @param priv + * Pointer to private structure. + * @param devargs + * Device arguments structure. + * + * @return + * 0 on success, errno value on failure. + */ +static int +mlx5_args(struct priv *priv, struct rte_devargs *devargs) +{ + static const char *params[] = { + NULL, + }; + struct rte_kvargs *kvlist; + int ret = 0; + int i; + + if (devargs == NULL) + return 0; + kvlist = rte_kvargs_parse(devargs->args, params); + if (kvlist == NULL) + return 0; + /* Process parameters. */ + for (i = 0; (i != RTE_DIM(params)); ++i) { + if (rte_kvargs_count(kvlist, params[i])) { + ret = rte_kvargs_process(kvlist, params[i], + mlx5_args_check, priv); + if (ret != 0) + return ret; + } + } + rte_kvargs_free(kvlist); + return 0; +} + static struct eth_driver mlx5_driver; /** @@ -408,6 +474,12 @@ mlx5_pci_devinit(struct rte_pci_driver *pci_drv, struct rte_pci_device *pci_dev) priv->port = port; priv->pd = pd; priv->mtu = ETHER_MTU; + err = mlx5_args(priv, pci_dev->devargs); + if (err) { + ERROR("failed to process device arguments: %s", + strerror(err)); + goto port_error; + } if (ibv_exp_query_device(ctx, &exp_device_attr)) { ERROR("ibv_exp_query_device() failed"); goto port_error;