From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr1-f66.google.com (mail-wr1-f66.google.com [209.85.221.66]) by dpdk.org (Postfix) with ESMTP id B165A1B50C for ; Wed, 11 Jul 2018 23:45:40 +0200 (CEST) Received: by mail-wr1-f66.google.com with SMTP id q10-v6so19598559wrd.4 for ; Wed, 11 Jul 2018 14:45:40 -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; bh=m7N1f6VpY+J/10HmMQ1x1n6PTG2NJKjdBCtNmpGPz2Q=; b=hh0qaVgeNbFzpbdoqPxeiYbZ5qEpcHM3PQyANp46XlYDWCqEOhWU3PlVYoEJtflLcF SIM9FS6P1EIfjPpkwoGmjne1y+GCssWjVlbc48rovIE95PeFkxJRV5RaGTQLhI7lLYOn 7LVHQiwG3RzVETtLSVBo/OdnzE+A8u9ozyS1KNgEcyXW/zmc6nEwsC6gUyp8VF0lIP/v i8vflWbCPrkfzTMnw3IiSmeOG8xSMP2DXvSU0azzqamAKPPub7z2sPcLjFK8B6d90bfE paZHXzgLjSORScu5xKECQTcChStZGuyCGh/R8GYcCTTrpYWHADt4YH8KUj7Qs0GQ0sbI uHdA== 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; bh=m7N1f6VpY+J/10HmMQ1x1n6PTG2NJKjdBCtNmpGPz2Q=; b=uHDWFaHz6dHUl/qWtmAo8x/CaP7tBBx4rW7JccfoErlUUjCkUXR2rL8pwJgo+rLv9c RDWG/0Iy4DCE8ltHjW/aV/CvdoXusaZHvpq3PD7+pK6c8RdkgfF24crn6SpPzqhmpmr3 NcB3I9QwIK5uzmKP5FnBS+nVvpyFTn7gUxfTaWbn3fc+a0taLq3Xhtq/3IkxBWpd8118 KIxbW+zWf+J8hFbWl2RUfnKE2osIy4cB18wPHXq+Ur1fjL0jTBwnDDgkwIN2du6LtwiI qR85uWIXiWieIhtIIPNmg4C6NQqzBTNaTBcEEI7IcrQDS7pgt+n03uKnwXtNx9insbs0 4rXg== X-Gm-Message-State: AOUpUlH6yyUVea8eoQP6i2Y0Uv9RVd0rei3Jj/l6te0KchPWEpfPEQiW jc5OQBSOmyxWrogWHdWPwrkkxWER X-Google-Smtp-Source: AAOMgpcdq1lA22YFvN6rDTD3LTqVJoSUaiWWo2b3JSdueY7yFMZ43ZI0flmoIq/60n4VazmNG3Rxzg== X-Received: by 2002:adf:c891:: with SMTP id k17-v6mr248153wrh.6.1531345539996; Wed, 11 Jul 2018 14:45:39 -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 h5-v6sm10550936wrr.19.2018.07.11.14.45.38 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 11 Jul 2018 14:45:38 -0700 (PDT) From: Gaetan Rivet To: dev@dpdk.org Cc: Gaetan Rivet Date: Wed, 11 Jul 2018 23:44:52 +0200 Message-Id: X-Mailer: git-send-email 2.18.0 In-Reply-To: References: Subject: [dpdk-dev] [PATCH v11 02/25] 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: Wed, 11 Jul 2018 21:45:42 -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 Acked-by: Shreyansh Jain Acked-by: Thomas Monjalon --- 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 894749e40..f84f3d2cf 100644 --- a/lib/librte_eal/common/eal_common_devargs.c +++ b/lib/librte_eal/common/eal_common_devargs.c @@ -63,24 +63,18 @@ 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; @@ -125,6 +119,34 @@ 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) { + RTE_LOG(ERR, EAL, "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) { @@ -151,7 +173,7 @@ 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 @@ -89,6 +89,42 @@ __rte_deprecated int rte_eal_parse_devargs_str(const char *devargs_str, char **drvname, char **drvargs); +/** + * 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 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. * @@ -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 16b8258a7..98e089e58 100644 --- a/lib/librte_ethdev/rte_ethdev.c +++ b/lib/librte_ethdev/rte_ethdev.c @@ -658,7 +658,7 @@ 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); -- 2.18.0