{"id":2230146,"url":"http://patchwork.ozlabs.org/api/1.2/patches/2230146/?format=json","web_url":"http://patchwork.ozlabs.org/project/uboot/patch/20260429-sys_rx_eth_buffer-no-net-v1-5-396ef37ae93c@cherry.de/","project":{"id":18,"url":"http://patchwork.ozlabs.org/api/1.2/projects/18/?format=json","name":"U-Boot","link_name":"uboot","list_id":"u-boot.lists.denx.de","list_email":"u-boot@lists.denx.de","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260429-sys_rx_eth_buffer-no-net-v1-5-396ef37ae93c@cherry.de>","list_archive_url":null,"date":"2026-04-29T10:35:05","name":"[RFC,next,5/5] net: SYS_RX_ETH_BUFFER defaults to 8 when CONFIG_FSL_ENETC=y","commit_ref":null,"pull_url":null,"state":"rfc","archived":false,"hash":"575d1ebe7df761ef9b2f38e9068167d50687fa43","submitter":{"id":84425,"url":"http://patchwork.ozlabs.org/api/1.2/people/84425/?format=json","name":"Quentin Schulz","email":"foss+uboot@0leil.net"},"delegate":{"id":157425,"url":"http://patchwork.ozlabs.org/api/1.2/users/157425/?format=json","username":"jforissier","first_name":"Jerome","last_name":"Forissier","email":"jerome.forissier@linaro.org"},"mbox":"http://patchwork.ozlabs.org/project/uboot/patch/20260429-sys_rx_eth_buffer-no-net-v1-5-396ef37ae93c@cherry.de/mbox/","series":[{"id":502037,"url":"http://patchwork.ozlabs.org/api/1.2/series/502037/?format=json","web_url":"http://patchwork.ozlabs.org/project/uboot/list/?series=502037","date":"2026-04-29T10:35:00","name":"net: guard SYS_RX_ETH_BUFFER with NET + required changes (ls1028a!) to make this happen","version":1,"mbox":"http://patchwork.ozlabs.org/series/502037/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2230146/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2230146/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=0leil.net header.i=@0leil.net header.a=rsa-sha256\n header.s=20231125 header.b=QPdxGS19;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=85.214.62.61; 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a=rsa-sha256; c=relaxed/relaxed; d=0leil.net;\n s=20231125; t=1777458917;\n bh=B15bT149NZ1gEGqcciEaPwYruyNJAqGD3R4MtlYDjsU=;\n h=From:Date:Subject:References:In-Reply-To:To:Cc:From;\n b=QPdxGS19bRZxoQY/b+IU3S4DGMUjw9yoN7PykSjvWjimT74t8GCeIT9dWTWmvIn30\n RkTUEemtRmO6fKclHc6hlDkop91B5MBEyFbbjByJ73JWSliMSSnoiehRA/Cb3ck1kY\n 3KsOtRaNiGfxlnezN5CAW47yY36uuBdJP9hp4wBfN1POG2zefS6ovCO2XegSsyufLK\n 1wXq/TviqG0CYRfSdUlx+/DL9n3wpDbFXE7zlb9LnjB3scVcTGGqO34IDE93pYlGtf\n qQyDh/plZuRnQ9SZm3gmGg3l92iPwOVz0frQ0qHeZ1OfZ53d8CuCuGqVrjbEcwyyim\n HXJ3uyUStCaKA==","From":"Quentin Schulz ","Date":"Wed, 29 Apr 2026 12:35:05 +0200","Subject":"[PATCH RFC next 5/5] net: SYS_RX_ETH_BUFFER defaults to 8 when\n CONFIG_FSL_ENETC=y","MIME-Version":"1.0","Content-Type":"text/plain; charset=\"utf-8\"","Content-Transfer-Encoding":"7bit","Message-Id":"<20260429-sys_rx_eth_buffer-no-net-v1-5-396ef37ae93c@cherry.de>","References":"<20260429-sys_rx_eth_buffer-no-net-v1-0-396ef37ae93c@cherry.de>","In-Reply-To":"<20260429-sys_rx_eth_buffer-no-net-v1-0-396ef37ae93c@cherry.de>","To":"u-boot@lists.denx.de","Cc":"Tang Yuantian , Tom Rini ,\n Fabio Estevam , Alice Guo ,\n Jerome Forissier ,\n Peter Robinson , Simon Glass ,\n Andrew Goodbody ,\n Benjamin Hahn ,\n Ilias Apalodimas , =?utf-8?q?Alvin_=C5=A0ipra?=\n\t=?utf-8?q?ga?= , Quentin Schulz ","X-Mailer":"b4 0.15-dev-47773","X-Infomaniak-Routing":"alpha","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.39","Precedence":"list","List-Id":"U-Boot discussion ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" ","X-Virus-Scanned":"clamav-milter 0.103.8 at phobos.denx.de","X-Virus-Status":"Clean"},"content":"From: Quentin Schulz \n\ndrivers/net/fsl_enetc.h specifies ENETC_BD_CNT \"buffer descriptors count\nmust be a multiple of 8\". This constant is set to\nCONFIG_SYS_RX_ETH_BUFFER which defaults to 4.\n\nAll defconfigs enabling CONFIG_FSL_ENETC fortunately have it set to 8,\naccording to\n./tools/qconfig.py -l -f CONFIG_FSL_ENETC '~CONFIG_SYS_RX_ETH_BUFFER=8'.\n\nLet's make sure the default is sane by having it set to 8 when this\ndriver is enabled. Note that originally[1] it was said EEPRO100 and 405\nEMAC should be 8 or higher. 405 (PPC405?) support seems to have been\ndropped in commit b5e7c84f72ee (\"ppc4xx: remove ASH405 board\"), 11 years\nago. Maybe there's something we can do for EEPRO100 though?\n\n[1] commit 53cf9435ccf9 (\"- CFG_RX_ETH_BUFFER added.\")\nSigned-off-by: Quentin Schulz \n---\n net/Kconfig | 1 +\n 1 file changed, 1 insertion(+)","diff":"diff --git a/net/Kconfig b/net/Kconfig\nindex 171a88f8ed2..80f0872e0f5 100644\n--- a/net/Kconfig\n+++ b/net/Kconfig\n@@ -281,6 +281,7 @@ config TFTP_BLOCKSIZE\n \n config SYS_RX_ETH_BUFFER\n int \"Number of receive packet buffers\"\n+\tdefault 8 if FSL_ENETC\n default 4\n help\n Defines the number of Ethernet receive buffers. On some Ethernet\n","prefixes":["RFC","next","5/5"]}