From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mails.dpdk.org (mails.dpdk.org [217.70.189.124]) by smtp.lore.kernel.org (Postfix) with ESMTP id CC0FAC5B56A for ; Wed, 12 Aug 2026 17:47:42 +0000 (UTC) Received: from mails.dpdk.org (localhost [127.0.0.1]) by mails.dpdk.org (Postfix) with ESMTP id 5743D40DD0; Wed, 12 Aug 2026 19:46:39 +0200 (CEST) Received: from inva021.nxp.com (inva021.nxp.com [92.121.34.21]) by mails.dpdk.org (Postfix) with ESMTP id 59A3D427A9 for ; Wed, 12 Aug 2026 19:46:35 +0200 (CEST) Received: from inva021.nxp.com (localhost [127.0.0.1]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 3D2BB200048; Wed, 12 Aug 2026 19:46:35 +0200 (CEST) Received: from aprdc01srsp001v.ap-rdc01.nxp.com (aprdc01srsp001v.ap-rdc01.nxp.com [165.114.16.16]) by inva021.eu-rdc02.nxp.com (Postfix) with ESMTP id 063A920003D; Wed, 12 Aug 2026 19:46:35 +0200 (CEST) Received: from lsv03583.swis.in-blr01.nxp.com (lsv03583.swis.in-blr01.nxp.com [92.120.146.12]) by aprdc01srsp001v.ap-rdc01.nxp.com (Postfix) with ESMTP id A402418000B5; Thu, 13 Aug 2026 01:46:33 +0800 (+08) From: Hemant Agrawal To: stephen@networkplumber.org, thomas@monjalon.net, dev@dpdk.org Subject: [PATCH v9 17/25] net/dpaa: support non fmX-macY type of shared Ethernet name Date: Wed, 12 Aug 2026 23:16:00 +0530 Message-Id: <20260812174609.1100111-18-hemant.agrawal@nxp.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20260812174609.1100111-1-hemant.agrawal@nxp.com> References: <20260811115731.3421032-1-hemant.agrawal@nxp.com> <20260812174609.1100111-1-hemant.agrawal@nxp.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Virus-Scanned: ClamAV using ClamSMTP 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 When using a shared interface, the Linux interface name (as shown by ifconfig) may differ from the fmX-macY style name used by DPDK. Add a "drv_sh_if_name" device argument to let the application provide the kernel shared interface name to the DPAA PMD. e.g. -a dpaa_bus:fm1-mac3,drv_sh_if_name=eth1 Signed-off-by: Hemant Agrawal --- doc/guides/nics/dpaa.rst | 5 +++ drivers/net/dpaa/dpaa_ethdev.c | 65 ++++++++++++++++++++++++++++++++-- 2 files changed, 68 insertions(+), 2 deletions(-) diff --git a/doc/guides/nics/dpaa.rst b/doc/guides/nics/dpaa.rst index 5858c63cc5..d4cf861d2b 100644 --- a/doc/guides/nics/dpaa.rst +++ b/doc/guides/nics/dpaa.rst @@ -292,6 +292,11 @@ the ``-a`` EAL option (e.g. ``-a dpaa_bus:fm1-mac3,drv_rx_taildrop=64``): In FMCLESS mode, override the number of Rx frame queues to create. +* ``drv_sh_if_name`` + + Provide the kernel Linux interface name for a shared MAC interface when it + differs from the ``fmX-macY`` style name used by DPDK. + FMAN Config ----------- diff --git a/drivers/net/dpaa/dpaa_ethdev.c b/drivers/net/dpaa/dpaa_ethdev.c index 98c5c8a77d..a8c935fdec 100644 --- a/drivers/net/dpaa/dpaa_ethdev.c +++ b/drivers/net/dpaa/dpaa_ethdev.c @@ -58,8 +58,12 @@ #define DRIVER_RX_TAILDROP "drv_rx_taildrop" #define DRIVER_TX_TAILDROP "drv_tx_taildrop" #define DRIVER_FMCLESS_RXQ "drv_fmcless_rxq" +#define DRIVER_SH_IF_NAME "drv_sh_if_name" #define RTE_PRIORITY_103 103 +static int dpaa_get_devargs_str(struct rte_devargs *devargs, const char *key, + char *val, size_t size); + /* Supported Rx offloads */ static uint64_t dev_rx_offloads_sup = RTE_ETH_RX_OFFLOAD_SCATTER; @@ -244,6 +248,7 @@ dpaa_eth_dev_configure(struct rte_eth_dev *dev) int speed, duplex; int ret, rx_status, socket_fd; struct ifreq ifr; + char sh_if_name[IFNAMSIZ]; PMD_INIT_FUNC_TRACE(); @@ -265,7 +270,15 @@ dpaa_eth_dev_configure(struct rte_eth_dev *dev) DPAA_PMD_ERR("Cannot open IF socket"); return -errno; } - strncpy(ifr.ifr_name, dpaa_intf->name, IFNAMSIZ - 1); + + sh_if_name[0] = '\0'; + ret = dpaa_get_devargs_str(dpaa_dev->device.devargs, + DRIVER_SH_IF_NAME, sh_if_name, + sizeof(sh_if_name)); + if (ret <= 0 || sh_if_name[0] == '\0') + strlcpy(ifr.ifr_name, dpaa_intf->name, IFNAMSIZ); + else + strlcpy(ifr.ifr_name, sh_if_name, IFNAMSIZ); if (ioctl(socket_fd, SIOCGIFMTU, &ifr) < 0) { DPAA_PMD_ERR("Cannot get interface mtu"); @@ -2268,6 +2281,53 @@ dpaa_get_devargs_int(struct rte_devargs *devargs, const char *key, long *val) return 1; } +static int +parse_str_devarg_handler(__rte_unused const char *key, const char *value, + void *opaque) +{ + *(const char **)opaque = value; + return 0; +} + +/* + * Fetch a string valued device argument into a caller-supplied buffer. + * Returns 1 and copies the value into val (up to size bytes, NUL-terminated) + * if the key is present, 0 if the key is absent, and a negative errno on error. + */ +static int +dpaa_get_devargs_str(struct rte_devargs *devargs, const char *key, + char *val, size_t size) +{ + struct rte_kvargs *kvlist; + const char *str = NULL; + int ret; + + if (!devargs) + return 0; + + kvlist = rte_kvargs_parse(devargs->args, NULL); + if (!kvlist) + return 0; + + if (!rte_kvargs_count(kvlist, key)) { + rte_kvargs_free(kvlist); + return 0; + } + + ret = rte_kvargs_process(kvlist, key, parse_str_devarg_handler, &str); + if (ret < 0 || str == NULL) { + rte_kvargs_free(kvlist); + return ret < 0 ? ret : 0; + } + + ret = rte_strscpy(val, str, size); + rte_kvargs_free(kvlist); + if (ret < 0) + return ret; + + return 1; +} + /* Initialise a network interface */ static int dpaa_dev_init(struct rte_eth_dev *eth_dev) @@ -2801,5 +2861,6 @@ RTE_PMD_REGISTER_PARAM_STRING(net_dpaa, DRIVER_RECV_ERR_PKTS "=" DRIVER_RX_TAILDROP "=" DRIVER_TX_TAILDROP "=" - DRIVER_FMCLESS_RXQ "="); + DRIVER_FMCLESS_RXQ "=" + DRIVER_SH_IF_NAME "="); RTE_LOG_REGISTER_DEFAULT(dpaa_logtype_pmd, NOTICE); -- 2.25.1