From mboxrd@z Thu Jan 1 00:00:00 1970 From: Gaetan Rivet Subject: [PATCH v2 03/18] devargs: introduce iterator Date: Thu, 12 Oct 2017 10:21:10 +0200 Message-ID: <66c91e49f7d9fb3c6faa642a5a4462048190bcf9.1507796100.git.gaetan.rivet@6wind.com> References: Cc: Gaetan Rivet To: dev@dpdk.org Return-path: Received: from mail-wm0-f47.google.com (mail-wm0-f47.google.com [74.125.82.47]) by dpdk.org (Postfix) with ESMTP id 00CB84C57 for ; Thu, 12 Oct 2017 10:21:45 +0200 (CEST) Received: by mail-wm0-f47.google.com with SMTP id f4so11028603wme.0 for ; Thu, 12 Oct 2017 01:21:44 -0700 (PDT) In-Reply-To: In-Reply-To: References: List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" In preparation to making devargs_list private. Bus drivers generally need to access rte_devargs pertaining to their operations. This match is a common operation for bus drivers. Add a new accessor for the rte_devargs list. Signed-off-by: Gaetan Rivet --- lib/librte_eal/bsdapp/eal/rte_eal_version.map | 1 + lib/librte_eal/common/eal_common_devargs.c | 19 +++++++++++++++++++ lib/librte_eal/common/include/rte_devargs.h | 18 ++++++++++++++++++ lib/librte_eal/linuxapp/eal/rte_eal_version.map | 1 + 4 files changed, 39 insertions(+) diff --git a/lib/librte_eal/bsdapp/eal/rte_eal_version.map b/lib/librte_eal/bsdapp/eal/rte_eal_version.map index 47416a5..01ae0c7 100644 --- a/lib/librte_eal/bsdapp/eal/rte_eal_version.map +++ b/lib/librte_eal/bsdapp/eal/rte_eal_version.map @@ -189,6 +189,7 @@ EXPERIMENTAL { global: rte_eal_devargs_insert; + rte_eal_devargs_next; rte_eal_devargs_parse; rte_eal_devargs_remove; rte_eal_hotplug_add; diff --git a/lib/librte_eal/common/eal_common_devargs.c b/lib/librte_eal/common/eal_common_devargs.c index 2fddbfa..614f1c5 100644 --- a/lib/librte_eal/common/eal_common_devargs.c +++ b/lib/librte_eal/common/eal_common_devargs.c @@ -208,3 +208,22 @@ rte_eal_devargs_dump(FILE *f) devargs->name, devargs->args); } } + +/* bus-aware rte_devargs iterator. */ +struct rte_devargs * +rte_eal_devargs_next(const char *busname, const struct rte_devargs *start) +{ + struct rte_devargs *da; + + if (start != NULL) + da = TAILQ_NEXT(start, next); + else + da = TAILQ_FIRST(&devargs_list); + while (da != NULL) { + if (busname == NULL || + (strcmp(busname, da->bus->name) == 0)) + return da; + da = TAILQ_NEXT(da, next); + } + return NULL; +} diff --git a/lib/librte_eal/common/include/rte_devargs.h b/lib/librte_eal/common/include/rte_devargs.h index e50c166..0eec406 100644 --- a/lib/librte_eal/common/include/rte_devargs.h +++ b/lib/librte_eal/common/include/rte_devargs.h @@ -188,6 +188,24 @@ int rte_eal_devargs_remove(const char *busname, const char *devname); */ void rte_eal_devargs_dump(FILE *f); +/** + * Find next rte_devargs matching the provided bus name. + * + * @param busname + * Limit the iteration to bus matching this name. + * Will return any next rte_devargs if NULL. + * + * @param start + * Starting iteration point. The iteration will start at + * the first rte_devargs if NULL. + * + * @return + * Next rte_devargs entry matching the requested bus, + * NULL if there is none. + */ +struct rte_devargs * +rte_eal_devargs_next(const char *busname, const struct rte_devargs *start); + #ifdef __cplusplus } #endif diff --git a/lib/librte_eal/linuxapp/eal/rte_eal_version.map b/lib/librte_eal/linuxapp/eal/rte_eal_version.map index e1e2a50..576de56 100644 --- a/lib/librte_eal/linuxapp/eal/rte_eal_version.map +++ b/lib/librte_eal/linuxapp/eal/rte_eal_version.map @@ -193,6 +193,7 @@ EXPERIMENTAL { global: rte_eal_devargs_insert; + rte_eal_devargs_next; rte_eal_devargs_parse; rte_eal_devargs_remove; rte_eal_hotplug_add; -- 2.1.4