From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gaetan Rivet Subject: [PATCH v10 24/27] bus/vdev: pre-process declarative vdev devargs Date: Thu, 5 Jul 2018 13:48:31 +0200 Message-ID: <41669072ea5a9a6a6487f5a814a88446e1f7f2b7.1530791217.git.gaetan.rivet@6wind.com> References: Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Cc: Gaetan Rivet To: dev@dpdk.org Return-path: Received: from mail-wm0-f68.google.com (mail-wm0-f68.google.com [74.125.82.68]) by dpdk.org (Postfix) with ESMTP id 5711C1BF10 for ; Thu, 5 Jul 2018 13:49:28 +0200 (CEST) Received: by mail-wm0-f68.google.com with SMTP id v25-v6so10657552wmc.0 for ; Thu, 05 Jul 2018 04:49:28 -0700 (PDT) In-Reply-To: List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" The new devargs format does not recognize a particular device name. Each bus uses its specific format. Process each devargs privately prior to attempting a bus scan. Prepare them if they are using the new devargs format. Signed-off-by: Gaetan Rivet --- drivers/bus/vdev/vdev.c | 10 ++++--- drivers/bus/vdev/vdev_params.c | 50 +++++++++++++++++++++++++++++++++ drivers/bus/vdev/vdev_private.h | 6 ++++ 3 files changed, 62 insertions(+), 4 deletions(-) diff --git a/drivers/bus/vdev/vdev.c b/drivers/bus/vdev/vdev.c index e8518833d..f2dace245 100644 --- a/drivers/bus/vdev/vdev.c +++ b/drivers/bus/vdev/vdev.c @@ -115,8 +115,8 @@ rte_vdev_remove_custom_scan(rte_vdev_scan_callback callback, void *user_arg) return 0; } -static int -vdev_parse(const char *name, void *addr) +int +rte_vdev_parse(const char *name, void *addr) { struct rte_vdev_driver **out = addr; struct rte_vdev_driver *driver = NULL; @@ -148,7 +148,7 @@ vdev_probe_all_drivers(struct rte_vdev_device *dev) VDEV_LOG(DEBUG, "Search driver %s to probe device %s", name, rte_vdev_device_name(dev)); - if (vdev_parse(name, &driver)) + if (rte_vdev_parse(name, &driver)) return -1; dev->device.driver = &driver->driver; ret = driver->probe(dev); @@ -443,6 +443,8 @@ vdev_scan(void) /* for virtual devices we scan the devargs_list populated via cmdline */ RTE_EAL_DEVARGS_FOREACH("vdev", devargs) { + if (rte_vdev_devargs_prepare(devargs)) + continue; dev = calloc(1, sizeof(*dev)); if (!dev) @@ -536,7 +538,7 @@ static struct rte_bus rte_vdev_bus = { .find_device = rte_vdev_find_device, .plug = vdev_plug, .unplug = vdev_unplug, - .parse = vdev_parse, + .parse = rte_vdev_parse, .dev_iterate = rte_vdev_dev_iterate, }; diff --git a/drivers/bus/vdev/vdev_params.c b/drivers/bus/vdev/vdev_params.c index 2f55f451f..7ad11b092 100644 --- a/drivers/bus/vdev/vdev_params.c +++ b/drivers/bus/vdev/vdev_params.c @@ -2,11 +2,14 @@ * Copyright 2018 Gaëtan Rivet */ +#include + #include #include #include #include #include +#include #include "vdev_logs.h" #include "vdev_private.h" @@ -60,3 +63,50 @@ rte_vdev_dev_iterate(const void *start, rte_kvargs_free(kvargs); return dev; } + +static int +vdev_driver_kv_parse(const char *key __rte_unused, + const char *value, + void *_da) +{ + struct rte_devargs *da = _da; + struct rte_vdev_driver *driver; + + /* Verify that the driver matches. */ + if (rte_vdev_parse(value, &driver)) + return -1; + + /* Copy the driver name as-is. */ + snprintf(da->name, sizeof(da->name), "%s", value); + return 0; +} + +int +rte_vdev_devargs_prepare(struct rte_devargs *da) +{ + struct rte_kvargs *kvargs = NULL; + char *args; + int ret; + + if (da->busstr == NULL) + return 0; + + args = strchr(da->busstr, ','); + if (args == NULL) + return 0; + args++; + + kvargs = rte_kvargs_parse(args, vdev_params_keys); + if (kvargs == NULL) { + VDEV_LOG(ERR, "unable to parse parameter list: %s\n", + da->busstr); + rte_errno = EINVAL; + return -1; + } + + ret = rte_kvargs_process(kvargs, "driver", + vdev_driver_kv_parse, da); + + rte_kvargs_free(kvargs); + return ret; +} diff --git a/drivers/bus/vdev/vdev_private.h b/drivers/bus/vdev/vdev_private.h index ba6dc48ff..da57b84dd 100644 --- a/drivers/bus/vdev/vdev_private.h +++ b/drivers/bus/vdev/vdev_private.h @@ -19,6 +19,12 @@ rte_vdev_dev_iterate(const void *start, const char *str, const struct rte_dev_iterator *it); +int +rte_vdev_parse(const char *name, void *addr); + +int +rte_vdev_devargs_prepare(struct rte_devargs *da); + #ifdef __cplusplus } #endif -- 2.18.0