From patchwork Wed Oct 27 14:02:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Ludovic_Court=C3=A8s?= X-Patchwork-Id: 34109 Return-Path: X-Original-To: patchwork@mira.cbaines.net Delivered-To: patchwork@mira.cbaines.net Received: by mira.cbaines.net (Postfix, from userid 113) id 93FE827BBE3; Wed, 27 Oct 2021 15:52:19 +0100 (BST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on mira.cbaines.net X-Spam-Level: X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI,RCVD_IN_MSPIKE_H2,SPF_HELO_PASS,T_DKIM_INVALID, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.2 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mira.cbaines.net (Postfix) with ESMTPS id 2046927BBE1 for ; Wed, 27 Oct 2021 15:52:19 +0100 (BST) Received: from localhost ([::1]:55358 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mfkHq-0002Ha-5y for patchwork@mira.cbaines.net; Wed, 27 Oct 2021 10:52:18 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:43148) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mfjXA-0008Lk-1D for guix-patches@gnu.org; Wed, 27 Oct 2021 10:04:04 -0400 Received: from debbugs.gnu.org ([209.51.188.43]:38544) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mfjX9-0005GJ-Mm for guix-patches@gnu.org; Wed, 27 Oct 2021 10:04:03 -0400 Received: from Debian-debbugs by debbugs.gnu.org with local (Exim 4.84_2) (envelope-from ) id 1mfjX9-0002ZG-It for guix-patches@gnu.org; Wed, 27 Oct 2021 10:04:03 -0400 X-Loop: help-debbugs@gnu.org Subject: [bug#51440] [PATCH 05/10] services: static-networking: Use Guile-Netlink on GNU/Linux. Resent-From: Ludovic =?utf-8?q?Court=C3=A8s?= Original-Sender: "Debbugs-submit" Resent-CC: guix-patches@gnu.org Resent-Date: Wed, 27 Oct 2021 14:04:03 +0000 Resent-Message-ID: Resent-Sender: help-debbugs@gnu.org X-GNU-PR-Message: followup 51440 X-GNU-PR-Package: guix-patches X-GNU-PR-Keywords: patch To: 51440@debbugs.gnu.org Cc: Ludovic =?utf-8?q?Court=C3=A8s?= Received: via spool by 51440-submit@debbugs.gnu.org id=B51440.16353433989733 (code B ref 51440); Wed, 27 Oct 2021 14:04:03 +0000 Received: (at 51440) by debbugs.gnu.org; 27 Oct 2021 14:03:18 +0000 Received: from localhost ([127.0.0.1]:50076 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mfjWQ-0002Wo-1m for submit@debbugs.gnu.org; Wed, 27 Oct 2021 10:03:18 -0400 Received: from eggs.gnu.org ([209.51.188.92]:45558) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from ) id 1mfjWI-0002VY-S6 for 51440@debbugs.gnu.org; Wed, 27 Oct 2021 10:03:11 -0400 Received: from fencepost.gnu.org ([2001:470:142:3::e]:37970) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mfjWD-00057z-Dy; Wed, 27 Oct 2021 10:03:05 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=gnu.org; s=fencepost-gnu-org; h=MIME-Version:References:In-Reply-To:Date:Subject:To: From; bh=2PZSQcBi7QvaYFLybO/4hOkFPRVIn5uFYlqQuLwxpHI=; b=crEorOcNfM/ubsO5CWY1 sqx30iyUVWg4pEjJ47oIGZBIfEtrTB9QZc5oarmGsoj9UWfr52Cr0yM+zqneD6KXZISuutVSgGtlD zbsJA63o1yEbNf+/PLfaofhrzEJiYk8w9oXjWGpmW4zOixQn9cuB+ovaGwCJCVCCCVMmhEkrHSpME Pu59CIFbaUnT7K9xvu3IiDG9h47mE930eBpUYeeqgZR10hvt3tDqf9tuSEyzMhcsBazmz+YqcvXdw Bx+ChfEmqUS2LCu372qfOq/r3COQFTwiakcPt9JbmNoE8kYyp2DQ1xP6Qh2any03xTIjzlFtDZq1t u3w/lRm+6S/vUA==; Received: from [2a01:e0a:1d:7270:af76:b9b:ca24:c465] (port=55004 helo=gnu.org) by fencepost.gnu.org with esmtpsa (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mfjW7-0002Tf-Id; Wed, 27 Oct 2021 10:03:04 -0400 From: Ludovic =?utf-8?q?Court=C3=A8s?= Date: Wed, 27 Oct 2021 16:02:40 +0200 Message-Id: <20211027140245.18970-5-ludo@gnu.org> X-Mailer: git-send-email 2.33.0 In-Reply-To: <20211027140245.18970-1-ludo@gnu.org> References: <20211027140245.18970-1-ludo@gnu.org> MIME-Version: 1.0 X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: guix-patches@gnu.org List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: guix-patches-bounces+patchwork=mira.cbaines.net@gnu.org Sender: "Guix-patches" X-getmail-retrieved-from-mailbox: Patches * gnu/services/base.scm (static-networking-shepherd-service): Define 'set-up-via-ioctl', 'tear-down-via-ioctl', 'set-up-via-netlink', 'tear-down-via-netlink', and 'helpers' and use them in 'start' and 'stop'. Add (ip *) modules to 'modules'. --- gnu/services/base.scm | 102 +++++++++++++++++++++++++++++------------- 1 file changed, 72 insertions(+), 30 deletions(-) diff --git a/gnu/services/base.scm b/gnu/services/base.scm index 50865055fe..d5ee03bbbd 100644 --- a/gnu/services/base.scm +++ b/gnu/services/base.scm @@ -53,6 +53,7 @@ (define-module (gnu services base) #:use-module (gnu packages bash) #:use-module ((gnu packages base) #:select (coreutils glibc glibc-utf8-locales)) + #:autoload (gnu packages guile-xyz) (guile-netlink) #:use-module (gnu packages package-management) #:use-module ((gnu packages gnupg) #:select (guile-gcrypt)) #:use-module (gnu packages linux) @@ -2336,6 +2337,66 @@ (define static-networking-shepherd-service (($ interface ip netmask gateway provision requirement name-servers) (let ((loopback? (and provision (memq 'loopback provision)))) + (define set-up-via-ioctl + #~(let* ((addr (inet-pton AF_INET #$ip)) + (sockaddr (make-socket-address AF_INET addr 0)) + (mask (and #$netmask (inet-pton AF_INET #$netmask))) + (maskaddr (and mask + (make-socket-address AF_INET mask 0))) + (gateway (and #$gateway + (inet-pton AF_INET #$gateway))) + (gatewayaddr (and gateway + (make-socket-address AF_INET + gateway 0)))) + (configure-network-interface #$interface sockaddr + (logior IFF_UP + #$(if loopback? + #~IFF_LOOPBACK + 0)) + #:netmask maskaddr) + (when gateway + (let ((sock (socket AF_INET SOCK_DGRAM 0))) + (add-network-route/gateway sock gatewayaddr) + (close-port sock))))) + + (define tear-down-via-ioctl + #~(let ((sock (socket AF_INET SOCK_STREAM 0))) + (when #$gateway + (delete-network-route sock + (make-socket-address AF_INET + INADDR_ANY 0))) + (set-network-interface-flags sock #$interface 0) + (close-port sock) + #f)) + + (define set-up-via-netlink + (with-extensions (list guile-netlink) + #~(let ((ip #$(if netmask + #~(ip+netmask->cidr #$ip #$netmask) + ip))) + (addr-add #$interface ip) + (when #$gateway + (route-add "default" #:device #$interface + #:via #$gateway)) + (link-set #$interface #:up #t)))) + + (define tear-down-via-netlink + (with-extensions (list guile-netlink) + #~(begin + (link-set #$interface #:down #t) + (when #$gateway + (route-del "default" #:device #$interface)) + (addr-del #$interface #$ip) + #f))) + + (define helpers + #~(define (ip+netmask->cidr ip netmask) + ;; Return the CIDR notation (a string) for IP and NETMASK, two + ;; IPv4 address strings. + (let* ((netmask (inet-pton AF_INET netmask)) + (bits (logcount netmask))) + (string-append ip "/" (number->string bits))))) + (shepherd-service (documentation @@ -2347,38 +2408,19 @@ (define static-networking-shepherd-service (start #~(lambda _ ;; Return #t if successfully started. - (let* ((addr (inet-pton AF_INET #$ip)) - (sockaddr (make-socket-address AF_INET addr 0)) - (mask (and #$netmask - (inet-pton AF_INET #$netmask))) - (maskaddr (and mask - (make-socket-address AF_INET - mask 0))) - (gateway (and #$gateway - (inet-pton AF_INET #$gateway))) - (gatewayaddr (and gateway - (make-socket-address AF_INET - gateway 0)))) - (configure-network-interface #$interface sockaddr - (logior IFF_UP - #$(if loopback? - #~IFF_LOOPBACK - 0)) - #:netmask maskaddr) - (when gateway - (let ((sock (socket AF_INET SOCK_DGRAM 0))) - (add-network-route/gateway sock gatewayaddr) - (close-port sock)))))) + #$helpers + (if (string-contains %host-type "-linux") + #$set-up-via-netlink + #$set-up-via-ioctl))) (stop #~(lambda _ ;; Return #f is successfully stopped. - (let ((sock (socket AF_INET SOCK_STREAM 0))) - (when #$gateway - (delete-network-route sock - (make-socket-address - AF_INET INADDR_ANY 0))) - (set-network-interface-flags sock #$interface 0) - (close-port sock) - #f))) + (if (string-contains %host-type "-linux") + #$tear-down-via-netlink + #$tear-down-via-ioctl))) + (modules `((ip addr) + (ip link) + (ip route) + ,@%default-modules)) (respawn? #f)))))) (define (static-networking-etc-files interfaces)