net-vpn/wireguard: work around hotplug+!padata

Package-Manager: Portage-2.3.6, Repoman-2.3.2

2 files changed, 303 insertions, 0 deletions

diff --git a/net-vpn/wireguard/files/wireguard-0.0.20170531-remove-padata-hotplug.patch b/net-vpn/wireguard/files/wireguard-0.0.20170531-remove-padata-hotplug.patch
new file mode 100644
index 000000000000..a1f4b80d01d3
--- /dev/null
+++ b/net-vpn/wireguard/files/wireguard-0.0.20170531-remove-padata-hotplug.patch
@@ -0,0 +1,188 @@
+From 1e0405942cecfd6de2a7707f3027f326d6f2fdb4 Mon Sep 17 00:00:00 2001
+From: "Jason A. Donenfeld" <Jason@zx2c4.com>
+Date: Thu, 1 Jun 2017 16:55:20 +0200
+Subject: compat: remove padata hotplug code
+
+It's different on different kernel versions, and we're not using it
+anyway, so it's easiest to just get rid of it, rather than having
+another ifdef maze.
+---
+ src/compat/padata/padata.c | 149 ---------------------------------------------
+ 1 file changed, 149 deletions(-)
+
+diff --git a/src/compat/padata/padata.c b/src/compat/padata/padata.c
+index 480c43f..25836db 100644
+--- a/src/compat/padata/padata.c
++++ b/src/compat/padata/padata.c
+@@ -677,131 +677,8 @@ void padata_stop(struct padata_instance *pinst)
+ 	mutex_unlock(&pinst->lock);
+ }
+ 
+-#ifdef CONFIG_HOTPLUG_CPU
+-
+-static int __padata_add_cpu(struct padata_instance *pinst, int cpu)
+-{
+-	struct parallel_data *pd;
+-
+-	if (cpumask_test_cpu(cpu, cpu_online_mask)) {
+-		pd = padata_alloc_pd(pinst, pinst->cpumask.pcpu,
+-				     pinst->cpumask.cbcpu);
+-		if (!pd)
+-			return -ENOMEM;
+-
+-		padata_replace(pinst, pd);
+-
+-		if (padata_validate_cpumask(pinst, pinst->cpumask.pcpu) &&
+-		    padata_validate_cpumask(pinst, pinst->cpumask.cbcpu))
+-			__padata_start(pinst);
+-	}
+-
+-	return 0;
+-}
+-
+-static int __padata_remove_cpu(struct padata_instance *pinst, int cpu)
+-{
+-	struct parallel_data *pd = NULL;
+-
+-	if (cpumask_test_cpu(cpu, cpu_online_mask)) {
+-
+-		if (!padata_validate_cpumask(pinst, pinst->cpumask.pcpu) ||
+-		    !padata_validate_cpumask(pinst, pinst->cpumask.cbcpu))
+-			__padata_stop(pinst);
+-
+-		pd = padata_alloc_pd(pinst, pinst->cpumask.pcpu,
+-				     pinst->cpumask.cbcpu);
+-		if (!pd)
+-			return -ENOMEM;
+-
+-		padata_replace(pinst, pd);
+-
+-		cpumask_clear_cpu(cpu, pd->cpumask.cbcpu);
+-		cpumask_clear_cpu(cpu, pd->cpumask.pcpu);
+-	}
+-
+-	return 0;
+-}
+-
+- /**
+- * padata_remove_cpu - remove a cpu from the one or both(serial and parallel)
+- *                     padata cpumasks.
+- *
+- * @pinst: padata instance
+- * @cpu: cpu to remove
+- * @mask: bitmask specifying from which cpumask @cpu should be removed
+- *        The @mask may be any combination of the following flags:
+- *          PADATA_CPU_SERIAL   - serial cpumask
+- *          PADATA_CPU_PARALLEL - parallel cpumask
+- */
+-int padata_remove_cpu(struct padata_instance *pinst, int cpu, int mask)
+-{
+-	int err;
+-
+-	if (!(mask & (PADATA_CPU_SERIAL | PADATA_CPU_PARALLEL)))
+-		return -EINVAL;
+-
+-	mutex_lock(&pinst->lock);
+-
+-	get_online_cpus();
+-	if (mask & PADATA_CPU_SERIAL)
+-		cpumask_clear_cpu(cpu, pinst->cpumask.cbcpu);
+-	if (mask & PADATA_CPU_PARALLEL)
+-		cpumask_clear_cpu(cpu, pinst->cpumask.pcpu);
+-
+-	err = __padata_remove_cpu(pinst, cpu);
+-	put_online_cpus();
+-
+-	mutex_unlock(&pinst->lock);
+-
+-	return err;
+-}
+-
+-static inline int pinst_has_cpu(struct padata_instance *pinst, int cpu)
+-{
+-	return cpumask_test_cpu(cpu, pinst->cpumask.pcpu) ||
+-		cpumask_test_cpu(cpu, pinst->cpumask.cbcpu);
+-}
+-
+-static int padata_cpu_online(unsigned int cpu, struct hlist_node *node)
+-{
+-	struct padata_instance *pinst;
+-	int ret;
+-
+-	pinst = hlist_entry_safe(node, struct padata_instance, node);
+-	if (!pinst_has_cpu(pinst, cpu))
+-		return 0;
+-
+-	mutex_lock(&pinst->lock);
+-	ret = __padata_add_cpu(pinst, cpu);
+-	mutex_unlock(&pinst->lock);
+-	return ret;
+-}
+-
+-static int padata_cpu_prep_down(unsigned int cpu, struct hlist_node *node)
+-{
+-	struct padata_instance *pinst;
+-	int ret;
+-
+-	pinst = hlist_entry_safe(node, struct padata_instance, node);
+-	if (!pinst_has_cpu(pinst, cpu))
+-		return 0;
+-
+-	mutex_lock(&pinst->lock);
+-	ret = __padata_remove_cpu(pinst, cpu);
+-	mutex_unlock(&pinst->lock);
+-	return ret;
+-}
+-
+-static enum cpuhp_state hp_online;
+-#endif
+-
+ static void __padata_free(struct padata_instance *pinst)
+ {
+-#ifdef CONFIG_HOTPLUG_CPU
+-	cpuhp_state_remove_instance_nocalls(hp_online, &pinst->node);
+-#endif
+-
+ 	padata_stop(pinst);
+ 	padata_free_pd(pinst->pd);
+ 	free_cpumask_var(pinst->cpumask.pcpu);
+@@ -995,9 +872,6 @@ struct padata_instance *padata_alloc(struct workqueue_struct *wq,
+ 	kobject_init(&pinst->kobj, &padata_attr_type);
+ 	mutex_init(&pinst->lock);
+ 
+-#ifdef CONFIG_HOTPLUG_CPU
+-	cpuhp_state_add_instance_nocalls(hp_online, &pinst->node);
+-#endif
+ 	return pinst;
+ 
+ err_free_masks:
+@@ -1019,26 +893,3 @@ void padata_free(struct padata_instance *pinst)
+ {
+ 	kobject_put(&pinst->kobj);
+ }
+-
+-#ifdef CONFIG_HOTPLUG_CPU
+-
+-static __init int padata_driver_init(void)
+-{
+-	int ret;
+-
+-	ret = cpuhp_setup_state_multi(CPUHP_AP_ONLINE_DYN, "padata:online",
+-				      padata_cpu_online,
+-				      padata_cpu_prep_down);
+-	if (ret < 0)
+-		return ret;
+-	hp_online = ret;
+-	return 0;
+-}
+-module_init(padata_driver_init);
+-
+-static __exit void padata_driver_exit(void)
+-{
+-	cpuhp_remove_multi_state(hp_online);
+-}
+-module_exit(padata_driver_exit);
+-#endif
+-- 
+cgit v1.1-9-ge9c1d
+
diff --git a/net-vpn/wireguard/wireguard-0.0.20170531-r1.ebuild b/net-vpn/wireguard/wireguard-0.0.20170531-r1.ebuild
new file mode 100644
index 000000000000..3d5b1b746f0b
--- /dev/null
+++ b/net-vpn/wireguard/wireguard-0.0.20170531-r1.ebuild
@@ -0,0 +1,115 @@
+# Copyright 1999-2017 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit linux-mod bash-completion-r1
+
+DESCRIPTION="Simple yet fast and modern VPN that utilizes state-of-the-art cryptography."
+HOMEPAGE="https://www.wireguard.io/"
+
+if [[ ${PV} == 9999 ]]; then
+	inherit git-r3
+	EGIT_REPO_URI="https://git.zx2c4.com/WireGuard"
+	KEYWORDS=""
+else
+	SRC_URI="https://git.zx2c4.com/WireGuard/snapshot/WireGuard-${PV}.tar.xz"
+	S="${WORKDIR}/WireGuard-${PV}"
+	KEYWORDS="~amd64 ~x86 ~mips ~arm ~arm64"
+fi
+
+LICENSE="GPL-2"
+SLOT="0"
+IUSE="debug +module +tools module-src"
+
+DEPEND="tools? ( net-libs/libmnl )"
+RDEPEND="${DEPEND}"
+
+MODULE_NAMES="wireguard(net:src)"
+BUILD_PARAMS="KERNELDIR=${KERNEL_DIR} V=1"
+BUILD_TARGETS="module"
+CONFIG_CHECK="NET INET NET_UDP_TUNNEL NF_CONNTRACK NETFILTER_XT_MATCH_HASHLIMIT CRYPTO_BLKCIPHER ~PADATA ~IP6_NF_IPTABLES"
+WARNING_PADATA="If you're running a multicore system you likely should enable CONFIG_PADATA for improved performance and parallel crypto."
+WARNING_IP6_NF_IPTABLES="If your kernel has CONFIG_IPV6, you need CONFIG_IP6_NF_IPTABLES; otherwise WireGuard will not insert."
+
+pkg_setup() {
+	if use module; then
+		linux-mod_pkg_setup
+		kernel_is -lt 3 10 0 && die "This version of ${PN} requires Linux >= 3.10"
+	fi
+}
+
+src_prepare() {
+	epatch "${FILESDIR}/${P}-remove-padata-hotplug.patch"
+	default
+}
+
+src_compile() {
+	use debug && BUILD_PARAMS="CONFIG_WIREGUARD_DEBUG=y ${BUILD_PARAMS}"
+	use module && linux-mod_src_compile
+	use tools && emake RUNSTATEDIR="${EPREFIX}/run" -C src/tools
+}
+
+src_install() {
+	use module && linux-mod_src_install
+	if use tools; then
+		dodoc README.md
+		dodoc -r contrib/examples
+		emake \
+			WITH_BASHCOMPLETION=yes \
+			WITH_SYSTEMDUNITS=yes \
+			WITH_WGQUICK=yes \
+			DESTDIR="${D}" \
+			BASHCOMPDIR="$(get_bashcompdir)" \
+			PREFIX="${EPREFIX}/usr" \
+			-C src/tools install
+		insinto /$(get_libdir)/netifrc/net
+		newins "${FILESDIR}"/wireguard-openrc.sh wireguard.sh
+	fi
+	use module-src && emake DESTDIR="${D}" PREFIX="${EPREFIX}/usr" -C src dkms-install
+}
+
+pkg_postinst() {
+	if use module-src && ! use module; then
+		einfo
+		einfo "You have enabled the module-src USE flag without the module USE"
+		einfo "flag. This means that sources are installed to"
+		einfo "${ROOT}usr/src/wireguard instead of having the"
+		einfo "kernel module compiled. You will need to compile the module"
+		einfo "yourself. Most likely, you don't want this USE flag, and should"
+		einfo "rather use USE=module"
+		einfo
+	fi
+	use module && linux-mod_pkg_postinst
+
+	ewarn
+	ewarn "This software is experimental and has not yet been released."
+	ewarn "As such, it may contain significant issues. Please do not file"
+	ewarn "bug reports with Gentoo, but rather direct them upstream to:"
+	ewarn
+	ewarn "    team@wireguard.io    security@wireguard.io"
+	ewarn
+
+	if use tools; then
+		einfo
+		einfo "After installing WireGuard, if you'd like to try sending some packets through"
+		einfo "WireGuard, you may use, for testing purposes only, the insecure client.sh"
+		einfo "test example script:"
+		einfo
+		einfo "  \$ bzcat ${ROOT}usr/share/doc/${PF}/examples/ncat-client-server/client.sh.bz2 | sudo bash -"
+		einfo
+		einfo "This will automatically setup interface wg0, through a very insecure transport"
+		einfo "that is only suitable for demonstration purposes. You can then try loading the"
+		einfo "hidden website or sending pings:"
+		einfo
+		einfo "  \$ chromium http://192.168.4.1"
+		einfo "  \$ ping 192.168.4.1"
+		einfo
+		einfo "If you'd like to redirect your internet traffic, you can run it with the"
+		einfo "\"default-route\" argument. You may not use this server for any abusive or illegal"
+		einfo "purposes. It is for quick testing only."
+		einfo
+		einfo "More info on getting started can be found at: https://www.wireguard.io/quickstart/"
+		einfo
+	fi
+}