From mboxrd@z Thu Jan 1 00:00:00 1970 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 DBE831B4C1 for ; Wed, 4 Jul 2018 00:15:35 +0200 (CEST) Received: by mail-wm0-f68.google.com with SMTP id 69-v6so3724974wmf.3 for ; Tue, 03 Jul 2018 15:15:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=6wind-com.20150623.gappssmtp.com; s=20150623; h=from:to:cc:subject:date:message-id:in-reply-to:references :in-reply-to:references; bh=cmYNR272NrQQU/ClBRXU0Ogls9o1jmYrTFobQ2Nviak=; b=OFXZ+neZ4bmCfAQRIIFOESEoBpV5ENYsKPpZbmID9KjtLubMtjbLJX8gaRw5AhVSHg QmgIbyBHpluxj5WsXvjdCWR33Feuw4Q7BsAS6hO8gq3BstLFTR12AjeGPzM33/SFed4/ ecZjPG6iqMbMziWZXh563Duc1smjzXc7yPAKz77WGvhAFroqvpCDn79yXy+Ai5Vn1OZh ALgk7ekpgyq14vULE90A3q3u3da8m7hNw2+n0XbqIsoIVO6XlfIGCFsMW4TDwsJr80dL AjBJucrPlpEw4L7eAubGEJ9Gf0nNSKNRDH33imLXQO5LdO3Vs9u18V1zjFzrV01wVZoC VqTA== 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:in-reply-to:references; bh=cmYNR272NrQQU/ClBRXU0Ogls9o1jmYrTFobQ2Nviak=; b=RCzTxqPVSNXkUt/LkRYW8A4snZJapcSWEcFQdU+6qHW97qJnVxy3PgnfEsI04ZcE3J dY3QxiARzSCpFXQ8XVo5exu0ylMRPq8t7VvRY/Y3xAAKYq+NOlqZ92TrskRnADCREkFB oEL+wajXv1Y5qw1DLgiVS5cOTMFLzicSI76rvNFB7QsMJ9/euzb3uJjJetL9UklofIXg tzE/JzY3Gmv/OEuUBrxIFNiUqTJBqI+GxQNOtUZSo58ab1C6twPY3P+ZzfNtSdmK+9sp fx/A6ysGDR5o0BwFxqMcyl6SnUUDacAnd11kFPz2Jx/6ah1/mQIg7IML40p8yK9mYXGx 3gHQ== X-Gm-Message-State: APt69E3z4GGnVom/ffoS8qAdjPd1NFwdcccpIey0O9wYFptcAOUJFYas SO6MMhl1Eo5XegMOFewBTuG+PxBb X-Google-Smtp-Source: AAOMgpdXfbpKO+duqkUgLXTaPmCi2yVBAJ61PL0HdrhgwDGvThLBVuX+rfnKPWWYitOfq6+vRD2gGQ== X-Received: by 2002:a1c:5b88:: with SMTP id p130-v6mr12385584wmb.69.1530656135033; Tue, 03 Jul 2018 15:15:35 -0700 (PDT) Received: from bidouze.dev.6wind.com. (host.78.145.23.62.rev.coltfrance.com. [62.23.145.78]) by smtp.gmail.com with ESMTPSA id i190-v6sm3771084wmd.33.2018.07.03.15.15.33 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 03 Jul 2018 15:15:34 -0700 (PDT) From: Gaetan Rivet To: dev@dpdk.org Cc: Gaetan Rivet Date: Wed, 4 Jul 2018 00:14:44 +0200 Message-Id: <4dd95d07b484a671a2be5d65ad12a4212093ada8.1530655929.git.gaetan.rivet@6wind.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: References: In-Reply-To: References: Subject: [dpdk-dev] [PATCH v9 01/27] devargs: add non-variadic parsing function 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: Tue, 03 Jul 2018 22:15:36 -0000 rte_devargs_parse becomes non-variadic, rte_devargs_parsef becomes the variadic version, to be used to compose device strings. Signed-off-by: Gaetan Rivet --- drivers/net/failsafe/failsafe_args.c | 2 +- drivers/net/failsafe/failsafe_eal.c | 2 +- lib/librte_eal/common/eal_common_dev.c | 4 +-- lib/librte_eal/common/eal_common_devargs.c | 42 ++++++++++++++++++++++------- lib/librte_eal/common/include/rte_devargs.h | 40 +++++++++++++++++++++++++-- lib/librte_eal/rte_eal_version.map | 1 + lib/librte_ethdev/rte_ethdev.c | 2 +- 7 files changed, 76 insertions(+), 17 deletions(-) diff --git a/drivers/net/failsafe/failsafe_args.c b/drivers/net/failsafe/failsafe_args.c index 2c002b164..626883ce2 100644 --- a/drivers/net/failsafe/failsafe_args.c +++ b/drivers/net/failsafe/failsafe_args.c @@ -63,7 +63,7 @@ fs_parse_device(struct sub_device *sdev, char *args) d = &sdev->devargs; DEBUG("%s", args); - ret = rte_devargs_parse(d, "%s", args); + ret = rte_devargs_parse(d, args); if (ret) { DEBUG("devargs parsing failed with code %d", ret); return ret; diff --git a/drivers/net/failsafe/failsafe_eal.c b/drivers/net/failsafe/failsafe_eal.c index 5672f3961..ce1633f13 100644 --- a/drivers/net/failsafe/failsafe_eal.c +++ b/drivers/net/failsafe/failsafe_eal.c @@ -86,7 +86,7 @@ fs_bus_init(struct rte_eth_dev *dev) else snprintf(devstr, sizeof(devstr), "%s", rte_eth_devices[pid].device->name); - ret = rte_devargs_parse(da, "%s", devstr); + ret = rte_devargs_parse(da, devstr); if (ret) { ERROR("Probed devargs parsing failed with code" " %d", ret); diff --git a/lib/librte_eal/common/eal_common_dev.c b/lib/librte_eal/common/eal_common_dev.c index 61cb3b162..ce4b51469 100644 --- a/lib/librte_eal/common/eal_common_dev.c +++ b/lib/librte_eal/common/eal_common_dev.c @@ -138,8 +138,8 @@ int __rte_experimental rte_eal_hotplug_add(const char *busname, const char *devn if (da == NULL) return -ENOMEM; - ret = rte_devargs_parse(da, "%s:%s,%s", - busname, devname, devargs); + ret = rte_devargs_parsef(da, "%s:%s,%s", + busname, devname, devargs); if (ret) goto err_devarg; diff --git a/lib/librte_eal/common/eal_common_devargs.c b/lib/librte_eal/common/eal_common_devargs.c index b0434158b..0a83beb94 100644 --- a/lib/librte_eal/common/eal_common_devargs.c +++ b/lib/librte_eal/common/eal_common_devargs.c @@ -62,24 +62,18 @@ bus_name_cmp(const struct rte_bus *bus, const void *name) return strncmp(bus->name, name, strlen(bus->name)); } -int __rte_experimental -rte_devargs_parse(struct rte_devargs *da, const char *format, ...) +__rte_experimental +int +rte_devargs_parse(struct rte_devargs *da, const char *dev) { struct rte_bus *bus = NULL; - va_list ap; - va_start(ap, format); - char dev[vsnprintf(NULL, 0, format, ap) + 1]; const char *devname; const size_t maxlen = sizeof(da->name); size_t i; - va_end(ap); if (da == NULL) return -EINVAL; - va_start(ap, format); - vsnprintf(dev, sizeof(dev), format, ap); - va_end(ap); /* Retrieve eventual bus info */ do { devname = dev; @@ -124,6 +118,34 @@ rte_devargs_parse(struct rte_devargs *da, const char *format, ...) return 0; } +__rte_experimental +int +rte_devargs_parsef(struct rte_devargs *da, const char *format, ...) +{ + va_list ap; + size_t len; + char *dev; + + if (da == NULL) + return -EINVAL; + + va_start(ap, format); + len = vsnprintf(NULL, 0, format, ap); + va_end(ap); + + dev = calloc(1, len + 1); + if (dev == NULL) { + fprintf(stderr, "ERROR: not enough memory to parse device\n"); + return -ENOMEM; + } + + va_start(ap, format); + vsnprintf(dev, len, format, ap); + va_end(ap); + + return rte_devargs_parse(da, dev); +} + int __rte_experimental rte_devargs_insert(struct rte_devargs *da) { @@ -150,7 +172,7 @@ rte_devargs_add(enum rte_devtype devtype, const char *devargs_str) if (devargs == NULL) goto fail; - if (rte_devargs_parse(devargs, "%s", dev)) + if (rte_devargs_parse(devargs, dev)) goto fail; devargs->type = devtype; bus = devargs->bus; diff --git a/lib/librte_eal/common/include/rte_devargs.h b/lib/librte_eal/common/include/rte_devargs.h index 58fbd90a2..6c3b6326b 100644 --- a/lib/librte_eal/common/include/rte_devargs.h +++ b/lib/librte_eal/common/include/rte_devargs.h @@ -96,6 +96,42 @@ int rte_eal_parse_devargs_str(const char *devargs_str, * in argument. Store which bus will handle the device, its name * and the eventual device parameters. * + * The syntax is: + * + * bus:device_identifier,arg1=val1,arg2=val2 + * + * where "bus:" is the bus name followed by any character separator. + * The bus name is optional. If no bus name is specified, each bus + * will attempt to recognize the device identifier. The first one + * to succeed will be used. + * + * Examples: + * + * pci:0000:05.00.0,arg=val + * 05.00.0,arg=val + * vdev:net_ring0 + * + * @param da + * The devargs structure holding the device information. + * + * @param dev + * String describing a device. + * + * @return + * - 0 on success. + * - Negative errno on error. + */ +__rte_experimental +int +rte_devargs_parse(struct rte_devargs *da, const char *dev); + +/** + * Parse a device string. + * + * Verify that a bus is capable of handling the device passed + * in argument. Store which bus will handle the device, its name + * and the eventual device parameters. + * * The device string is built with a printf-like syntax. * * The syntax is: @@ -124,8 +160,8 @@ int rte_eal_parse_devargs_str(const char *devargs_str, */ __rte_experimental int -rte_devargs_parse(struct rte_devargs *da, - const char *format, ...) +rte_devargs_parsef(struct rte_devargs *da, + const char *format, ...) __attribute__((format(printf, 2, 0))); /** diff --git a/lib/librte_eal/rte_eal_version.map b/lib/librte_eal/rte_eal_version.map index f7dd0e7bc..1c4db72fa 100644 --- a/lib/librte_eal/rte_eal_version.map +++ b/lib/librte_eal/rte_eal_version.map @@ -254,6 +254,7 @@ EXPERIMENTAL { rte_devargs_insert; rte_devargs_next; rte_devargs_parse; + rte_devargs_parsef; rte_devargs_remove; rte_devargs_type_count; rte_eal_cleanup; diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c index a9977df97..cce20d9ae 100644 --- a/lib/librte_ethdev/rte_ethdev.c +++ b/lib/librte_ethdev/rte_ethdev.c @@ -654,7 +654,7 @@ rte_eth_dev_attach(const char *devargs, uint16_t *port_id) } /* parse devargs */ - if (rte_devargs_parse(&da, "%s", devargs)) + if (rte_devargs_parse(&da, devargs)) goto err; ret = rte_eal_hotplug_add(da.bus->name, da.name, da.args); -- 2.11.0