From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by inbox.dpdk.org (Postfix) with ESMTP id B37EFA0575; Thu, 11 Mar 2021 14:14:11 +0100 (CET) Received: from [217.70.189.124] (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 05CFE22A483; Thu, 11 Mar 2021 14:14:09 +0100 (CET) Received: from mellanox.co.il (mail-il-dmz.mellanox.com [193.47.165.129]) by mails.dpdk.org (Postfix) with ESMTP id 0216440689 for ; Thu, 11 Mar 2021 14:14:07 +0100 (CET) Received: from Internal Mail-Server by MTLPINE1 (envelope-from xuemingl@nvidia.com) with SMTP; 11 Mar 2021 15:14:03 +0200 Received: from nvidia.com (pegasus05.mtr.labs.mlnx [10.210.16.100]) by labmailer.mlnx (8.13.8/8.13.8) with ESMTP id 12BDDkZ4023953; Thu, 11 Mar 2021 15:14:03 +0200 From: Xueming Li To: Andrew Rybchenko , Ferruh Yigit Cc: dev@dpdk.org, Viacheslav Ovsiienko , xuemingl@nvidia.com, Asaf Penso , Thomas Monjalon Date: Thu, 11 Mar 2021 13:13:25 +0000 Message-Id: <1615468416-10115-3-git-send-email-xuemingl@nvidia.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1615468416-10115-1-git-send-email-xuemingl@nvidia.com> References: <1615468416-10115-1-git-send-email-xuemingl@nvidia.com> In-Reply-To: <1608303356-13089-2-git-send-email-xuemingl@nvidia.com> References: <1608303356-13089-2-git-send-email-xuemingl@nvidia.com> Subject: [dpdk-dev] [PATCH v9 02/10] ethdev: refactor representor port list parsing X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" To the extended representor syntax which need to reuse the value parsing function for controller and pf section, this patch refactors the port list parsing. Signed-off-by: Xueming Li Acked-by: Viacheslav Ovsiienko Acked-by: Thomas Monjalon Acked-by: Andrew Rybchenko --- lib/librte_ethdev/ethdev_private.c | 129 ++++++++++++++++------------- lib/librte_ethdev/ethdev_private.h | 3 - lib/librte_ethdev/rte_class_eth.c | 4 +- lib/librte_ethdev/rte_ethdev.c | 5 +- 4 files changed, 74 insertions(+), 67 deletions(-) diff --git a/lib/librte_ethdev/ethdev_private.c b/lib/librte_ethdev/ethdev_private.c index 2d51e3857a..d5ef05ea6f 100644 --- a/lib/librte_ethdev/ethdev_private.c +++ b/lib/librte_ethdev/ethdev_private.c @@ -38,82 +38,91 @@ eth_find_device(const struct rte_eth_dev *start, rte_eth_cmp_t cmp, return NULL; } -int -rte_eth_devargs_parse_list(char *str, rte_eth_devargs_callback_t callback, - void *data) +/* Put new value into list. */ +static int +rte_eth_devargs_enlist(uint16_t *list, uint16_t *len_list, + const uint16_t max_list, uint16_t val) { - char *str_start; - int state; - int result; - - if (*str != '[') - /* Single element, not a list */ - return callback(str, data); - - /* Sanity check, then strip the brackets */ - str_start = &str[strlen(str) - 1]; - if (*str_start != ']') { - RTE_LOG(ERR, EAL, "(%s): List does not end with ']'\n", str); - return -EINVAL; - } - str++; - *str_start = '\0'; + uint16_t i; - /* Process list elements */ - state = 0; - while (1) { - if (state == 0) { - if (*str == '\0') - break; - if (*str != ',') { - str_start = str; - state = 1; - } - } else if (state == 1) { - if (*str == ',' || *str == '\0') { - if (str > str_start) { - /* Non-empty string fragment */ - *str = '\0'; - result = callback(str_start, data); - if (result < 0) - return result; - } - state = 0; - } - } - str++; + for (i = 0; i < *len_list; i++) { + if (list[i] == val) + return 0; } + if (*len_list >= max_list) + return -1; + list[(*len_list)++] = val; return 0; } -static int +/* Parse and enlist a range expression of "min-max" or a single value. */ +static char * rte_eth_devargs_process_range(char *str, uint16_t *list, uint16_t *len_list, const uint16_t max_list) { uint16_t lo, hi, val; - int result; + int result, n = 0; + char *pos = str; - result = sscanf(str, "%hu-%hu", &lo, &hi); + result = sscanf(str, "%hu%n-%hu%n", &lo, &n, &hi, &n); if (result == 1) { - if (*len_list >= max_list) - return -ENOMEM; - list[(*len_list)++] = lo; + if (rte_eth_devargs_enlist(list, len_list, max_list, lo) != 0) + return NULL; } else if (result == 2) { - if (lo >= hi || lo > RTE_MAX_ETHPORTS || hi > RTE_MAX_ETHPORTS) - return -EINVAL; + if (lo > hi) + return NULL; for (val = lo; val <= hi; val++) { - if (*len_list >= max_list) - return -ENOMEM; - list[(*len_list)++] = val; + if (rte_eth_devargs_enlist(list, len_list, max_list, + val) != 0) + return NULL; } } else - return -EINVAL; - return 0; + return NULL; + return pos + n; +} + +/* + * Parse list of values separated by ",". + * Each value could be a range [min-max] or single number. + * Examples: + * 2 - single + * [1,2,3] - single list + * [1,3-5,7,9-11] - list with singles and ranges + */ +static char * +rte_eth_devargs_process_list(char *str, uint16_t *list, uint16_t *len_list, + const uint16_t max_list) +{ + char *pos = str; + + if (*pos == '[') + pos++; + while (1) { + pos = rte_eth_devargs_process_range(pos, list, len_list, + max_list); + if (pos == NULL) + return NULL; + if (*pos != ',') /* end of list */ + break; + pos++; + } + if (*str == '[' && *pos != ']') + return NULL; + if (*pos == ']') + pos++; + return pos; } /* - * representor format: + * Parse representor ports from a single value or lists. + * + * Representor format: * #: range or single number of VF representor + * + * Examples of #: + * 2 - single + * [1,2,3] - single list + * [1,3-5,7,9-11] - list with singles and ranges */ int rte_eth_devargs_parse_representor_ports(char *str, void *data) @@ -121,6 +130,10 @@ rte_eth_devargs_parse_representor_ports(char *str, void *data) struct rte_eth_devargs *eth_da = data; eth_da->type = RTE_ETH_REPRESENTOR_VF; - return rte_eth_devargs_process_range(str, eth_da->representor_ports, - ð_da->nb_representor_ports, RTE_MAX_ETHPORTS); + str = rte_eth_devargs_process_list(str, eth_da->representor_ports, + ð_da->nb_representor_ports, + RTE_DIM(eth_da->representor_ports)); + if (str == NULL) + RTE_LOG(ERR, EAL, "wrong representor format: %s\n", str); + return str == NULL ? -1 : 0; } diff --git a/lib/librte_ethdev/ethdev_private.h b/lib/librte_ethdev/ethdev_private.h index 905a45c337..220ddd4408 100644 --- a/lib/librte_ethdev/ethdev_private.h +++ b/lib/librte_ethdev/ethdev_private.h @@ -26,9 +26,6 @@ eth_find_device(const struct rte_eth_dev *_start, rte_eth_cmp_t cmp, const void *data); /* Parse devargs value for representor parameter. */ -typedef int (*rte_eth_devargs_callback_t)(char *str, void *data); -int rte_eth_devargs_parse_list(char *str, rte_eth_devargs_callback_t callback, - void *data); int rte_eth_devargs_parse_representor_ports(char *str, void *data); #ifdef __cplusplus diff --git a/lib/librte_ethdev/rte_class_eth.c b/lib/librte_ethdev/rte_class_eth.c index ca2ce87f7a..051c892b40 100644 --- a/lib/librte_ethdev/rte_class_eth.c +++ b/lib/librte_ethdev/rte_class_eth.c @@ -77,9 +77,7 @@ eth_representor_cmp(const char *key __rte_unused, if (values == NULL) return -1; memset(&representors, 0, sizeof(representors)); - ret = rte_eth_devargs_parse_list(values, - rte_eth_devargs_parse_representor_ports, - &representors); + ret = rte_eth_devargs_parse_representor_ports(values, &representors); free(values); if (ret != 0) return -1; /* invalid devargs value */ diff --git a/lib/librte_ethdev/rte_ethdev.c b/lib/librte_ethdev/rte_ethdev.c index 6f514c388b..fe9466a03e 100644 --- a/lib/librte_ethdev/rte_ethdev.c +++ b/lib/librte_ethdev/rte_ethdev.c @@ -5589,9 +5589,8 @@ rte_eth_devargs_parse(const char *dargs, struct rte_eth_devargs *eth_da) for (i = 0; i < args.count; i++) { pair = &args.pairs[i]; if (strcmp("representor", pair->key) == 0) { - result = rte_eth_devargs_parse_list(pair->value, - rte_eth_devargs_parse_representor_ports, - eth_da); + result = rte_eth_devargs_parse_representor_ports( + pair->value, eth_da); if (result < 0) goto parse_cleanup; } -- 2.25.1