testing/linux-vserver-sources: moved from core

3 files changed, 386 insertions, 0 deletions

diff --git a/testing/linux-vserver-sources/0001-linux-2.6.28.5-ipgre-strict-binding.patch b/testing/linux-vserver-sources/0001-linux-2.6.28.5-ipgre-strict-binding.patch
new file mode 100644
index 00000000..fd0cfeb2
--- /dev/null
+++ b/testing/linux-vserver-sources/0001-linux-2.6.28.5-ipgre-strict-binding.patch
@@ -0,0 +1,207 @@
+From: Timo Teras <timo.teras@iki.fi>
+Date: Tue, 20 Jan 2009 01:22:12 +0000 (-0800)
+Subject: gre: strict physical device binding
+X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Fdavem%2Fnet-next-2.6.git;a=commitdiff_plain;h=749c10f931923451a4c59b4435d182aa9ae27a4f;hp=57a574993d94671b495cdbe8aeb78b745abfe14f
+
+gre: strict physical device binding
+
+Check the device on receive path and allow otherwise identical devices
+as long as the physical device differs.
+
+This is useful for NBMA tunnels, where you want to use different gre IP
+for each public IP available via different physical devices.
+
+Signed-off-by: Timo Teras <timo.teras@iki.fi>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+
+diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
+index 0101521..4a43739 100644
+--- a/net/ipv4/ip_gre.c
++++ b/net/ipv4/ip_gre.c
+@@ -164,67 +164,113 @@ static DEFINE_RWLOCK(ipgre_lock);
+ 
+ /* Given src, dst and key, find appropriate for input tunnel. */
+ 
+-static struct ip_tunnel * ipgre_tunnel_lookup(struct net *net,
++static struct ip_tunnel * ipgre_tunnel_lookup(struct net_device *dev,
+ 					      __be32 remote, __be32 local,
+ 					      __be32 key, __be16 gre_proto)
+ {
++	struct net *net = dev_net(dev);
++	int link = dev->ifindex;
+ 	unsigned h0 = HASH(remote);
+ 	unsigned h1 = HASH(key);
+-	struct ip_tunnel *t;
+-	struct ip_tunnel *t2 = NULL;
++	struct ip_tunnel *t, *sel[4] = { NULL, NULL, NULL, NULL };
+ 	struct ipgre_net *ign = net_generic(net, ipgre_net_id);
+ 	int dev_type = (gre_proto == htons(ETH_P_TEB)) ?
+ 		       ARPHRD_ETHER : ARPHRD_IPGRE;
++	int idx;
+ 
+ 	for (t = ign->tunnels_r_l[h0^h1]; t; t = t->next) {
+-		if (local == t->parms.iph.saddr && remote == t->parms.iph.daddr) {
+-			if (t->parms.i_key == key && t->dev->flags & IFF_UP) {
+-				if (t->dev->type == dev_type)
+-					return t;
+-				if (t->dev->type == ARPHRD_IPGRE && !t2)
+-					t2 = t;
+-			}
+-		}
++		if (local != t->parms.iph.saddr ||
++		    remote != t->parms.iph.daddr ||
++		    key != t->parms.i_key ||
++		    !(t->dev->flags & IFF_UP))
++			continue;
++
++		if (t->dev->type != ARPHRD_IPGRE &&
++		    t->dev->type != dev_type)
++			continue;
++
++		idx = 0;
++		if (t->parms.link != link)
++			idx |= 1;
++		if (t->dev->type != dev_type)
++			idx |= 2;
++		if (idx == 0)
++			return t;
++		if (sel[idx] == NULL)
++			sel[idx] = t;
+ 	}
+ 
+ 	for (t = ign->tunnels_r[h0^h1]; t; t = t->next) {
+-		if (remote == t->parms.iph.daddr) {
+-			if (t->parms.i_key == key && t->dev->flags & IFF_UP) {
+-				if (t->dev->type == dev_type)
+-					return t;
+-				if (t->dev->type == ARPHRD_IPGRE && !t2)
+-					t2 = t;
+-			}
+-		}
++		if (remote != t->parms.iph.daddr ||
++		    key != t->parms.i_key ||
++		    !(t->dev->flags & IFF_UP))
++			continue;
++
++		if (t->dev->type != ARPHRD_IPGRE &&
++		    t->dev->type != dev_type)
++			continue;
++
++		idx = 0;
++		if (t->parms.link != link)
++			idx |= 1;
++		if (t->dev->type != dev_type)
++			idx |= 2;
++		if (idx == 0)
++			return t;
++		if (sel[idx] == NULL)
++			sel[idx] = t;
+ 	}
+ 
+ 	for (t = ign->tunnels_l[h1]; t; t = t->next) {
+-		if (local == t->parms.iph.saddr ||
+-		     (local == t->parms.iph.daddr &&
+-		      ipv4_is_multicast(local))) {
+-			if (t->parms.i_key == key && t->dev->flags & IFF_UP) {
+-				if (t->dev->type == dev_type)
+-					return t;
+-				if (t->dev->type == ARPHRD_IPGRE && !t2)
+-					t2 = t;
+-			}
+-		}
++		if ((local != t->parms.iph.saddr &&
++		     (local != t->parms.iph.daddr ||
++		      !ipv4_is_multicast(local))) ||
++		    key != t->parms.i_key ||
++		    !(t->dev->flags & IFF_UP))
++			continue;
++
++		if (t->dev->type != ARPHRD_IPGRE &&
++		    t->dev->type != dev_type)
++			continue;
++
++		idx = 0;
++		if (t->parms.link != link)
++			idx |= 1;
++		if (t->dev->type != dev_type)
++			idx |= 2;
++		if (idx == 0)
++			return t;
++		if (sel[idx] == NULL)
++			sel[idx] = t;
+ 	}
+ 
+ 	for (t = ign->tunnels_wc[h1]; t; t = t->next) {
+-		if (t->parms.i_key == key && t->dev->flags & IFF_UP) {
+-			if (t->dev->type == dev_type)
+-				return t;
+-			if (t->dev->type == ARPHRD_IPGRE && !t2)
+-				t2 = t;
+-		}
++		if (t->parms.i_key != key ||
++		    !(t->dev->flags & IFF_UP))
++			continue;
++
++		if (t->dev->type != ARPHRD_IPGRE &&
++		    t->dev->type != dev_type)
++			continue;
++
++		idx = 0;
++		if (t->parms.link != link)
++			idx |= 1;
++		if (t->dev->type != dev_type)
++			idx |= 2;
++		if (idx == 0)
++			return t;
++		if (sel[idx] == NULL)
++			sel[idx] = t;
+ 	}
+ 
+-	if (t2)
+-		return t2;
++	for (idx = 1; idx < ARRAY_SIZE(sel); idx++)
++		if (sel[idx] != NULL)
++			return sel[idx];
+ 
+-	if (ign->fb_tunnel_dev->flags&IFF_UP)
++	if (ign->fb_tunnel_dev->flags & IFF_UP)
+ 		return netdev_priv(ign->fb_tunnel_dev);
++
+ 	return NULL;
+ }
+ 
+@@ -284,6 +330,7 @@ static struct ip_tunnel *ipgre_tunnel_find(struct net *net,
+ 	__be32 remote = parms->iph.daddr;
+ 	__be32 local = parms->iph.saddr;
+ 	__be32 key = parms->i_key;
++	int link = parms->link;
+ 	struct ip_tunnel *t, **tp;
+ 	struct ipgre_net *ign = net_generic(net, ipgre_net_id);
+ 
+@@ -291,6 +338,7 @@ static struct ip_tunnel *ipgre_tunnel_find(struct net *net,
+ 		if (local == t->parms.iph.saddr &&
+ 		    remote == t->parms.iph.daddr &&
+ 		    key == t->parms.i_key &&
++		    link == t->parms.link &&
+ 		    type == t->dev->type)
+ 			break;
+ 
+@@ -421,7 +469,7 @@ static void ipgre_err(struct sk_buff *skb, u32 info)
+ 	}
+ 
+ 	read_lock(&ipgre_lock);
+-	t = ipgre_tunnel_lookup(dev_net(skb->dev), iph->daddr, iph->saddr,
++	t = ipgre_tunnel_lookup(skb->dev, iph->daddr, iph->saddr,
+ 				flags & GRE_KEY ?
+ 				*(((__be32 *)p) + (grehlen / 4) - 1) : 0,
+ 				p[1]);
+@@ -518,7 +566,7 @@ static int ipgre_rcv(struct sk_buff *skb)
+ 	gre_proto = *(__be16 *)(h + 2);
+ 
+ 	read_lock(&ipgre_lock);
+-	if ((tunnel = ipgre_tunnel_lookup(dev_net(skb->dev),
++	if ((tunnel = ipgre_tunnel_lookup(skb->dev,
+ 					  iph->saddr, iph->daddr, key,
+ 					  gre_proto))) {
+ 		struct net_device_stats *stats = &tunnel->dev->stats;
diff --git a/testing/linux-vserver-sources/0002-linux-2.6.28.5-ipgre-optimize-hash-lookup.patch b/testing/linux-vserver-sources/0002-linux-2.6.28.5-ipgre-optimize-hash-lookup.patch
new file mode 100644
index 00000000..fbfef33b
--- /dev/null
+++ b/testing/linux-vserver-sources/0002-linux-2.6.28.5-ipgre-optimize-hash-lookup.patch
@@ -0,0 +1,140 @@
+From: Timo Teras <timo.teras@iki.fi>
+Date: Tue, 27 Jan 2009 04:56:10 +0000 (-0800)
+Subject: gre: optimize hash lookup
+X-Git-Url: http://git.kernel.org/?p=linux%2Fkernel%2Fgit%2Fdavem%2Fnet-next-2.6.git;a=commitdiff_plain;h=afcf12422ec8236dc8b9238fef7a475876eea8da;hp=3eacdf58c2c0b9507afedfc19108e98b992c31e4
+
+gre: optimize hash lookup
+
+Instead of keeping candidate tunnel device from all categories,
+keep only one candidate with best score. This optimizes stack
+usage and speeds up exit code.
+
+Signed-off-by: Timo Teras <timo.teras@iki.fi>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+
+diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c
+index 4a43739..07a188a 100644
+--- a/net/ipv4/ip_gre.c
++++ b/net/ipv4/ip_gre.c
+@@ -172,11 +172,11 @@ static struct ip_tunnel * ipgre_tunnel_lookup(struct net_device *dev,
+ 	int link = dev->ifindex;
+ 	unsigned h0 = HASH(remote);
+ 	unsigned h1 = HASH(key);
+-	struct ip_tunnel *t, *sel[4] = { NULL, NULL, NULL, NULL };
++	struct ip_tunnel *t, *cand = NULL;
+ 	struct ipgre_net *ign = net_generic(net, ipgre_net_id);
+ 	int dev_type = (gre_proto == htons(ETH_P_TEB)) ?
+ 		       ARPHRD_ETHER : ARPHRD_IPGRE;
+-	int idx;
++	int score, cand_score = 4;
+ 
+ 	for (t = ign->tunnels_r_l[h0^h1]; t; t = t->next) {
+ 		if (local != t->parms.iph.saddr ||
+@@ -189,15 +189,18 @@ static struct ip_tunnel * ipgre_tunnel_lookup(struct net_device *dev,
+ 		    t->dev->type != dev_type)
+ 			continue;
+ 
+-		idx = 0;
++		score = 0;
+ 		if (t->parms.link != link)
+-			idx |= 1;
++			score |= 1;
+ 		if (t->dev->type != dev_type)
+-			idx |= 2;
+-		if (idx == 0)
++			score |= 2;
++		if (score == 0)
+ 			return t;
+-		if (sel[idx] == NULL)
+-			sel[idx] = t;
++
++		if (score < cand_score) {
++			cand = t;
++			cand_score = score;
++		}
+ 	}
+ 
+ 	for (t = ign->tunnels_r[h0^h1]; t; t = t->next) {
+@@ -210,15 +213,18 @@ static struct ip_tunnel * ipgre_tunnel_lookup(struct net_device *dev,
+ 		    t->dev->type != dev_type)
+ 			continue;
+ 
+-		idx = 0;
++		score = 0;
+ 		if (t->parms.link != link)
+-			idx |= 1;
++			score |= 1;
+ 		if (t->dev->type != dev_type)
+-			idx |= 2;
+-		if (idx == 0)
++			score |= 2;
++		if (score == 0)
+ 			return t;
+-		if (sel[idx] == NULL)
+-			sel[idx] = t;
++
++		if (score < cand_score) {
++			cand = t;
++			cand_score = score;
++		}
+ 	}
+ 
+ 	for (t = ign->tunnels_l[h1]; t; t = t->next) {
+@@ -233,15 +239,18 @@ static struct ip_tunnel * ipgre_tunnel_lookup(struct net_device *dev,
+ 		    t->dev->type != dev_type)
+ 			continue;
+ 
+-		idx = 0;
++		score = 0;
+ 		if (t->parms.link != link)
+-			idx |= 1;
++			score |= 1;
+ 		if (t->dev->type != dev_type)
+-			idx |= 2;
+-		if (idx == 0)
++			score |= 2;
++		if (score == 0)
+ 			return t;
+-		if (sel[idx] == NULL)
+-			sel[idx] = t;
++
++		if (score < cand_score) {
++			cand = t;
++			cand_score = score;
++		}
+ 	}
+ 
+ 	for (t = ign->tunnels_wc[h1]; t; t = t->next) {
+@@ -253,20 +262,22 @@ static struct ip_tunnel * ipgre_tunnel_lookup(struct net_device *dev,
+ 		    t->dev->type != dev_type)
+ 			continue;
+ 
+-		idx = 0;
++		score = 0;
+ 		if (t->parms.link != link)
+-			idx |= 1;
++			score |= 1;
+ 		if (t->dev->type != dev_type)
+-			idx |= 2;
+-		if (idx == 0)
++			score |= 2;
++		if (score == 0)
+ 			return t;
+-		if (sel[idx] == NULL)
+-			sel[idx] = t;
++
++		if (score < cand_score) {
++			cand = t;
++			cand_score = score;
++		}
+ 	}
+ 
+-	for (idx = 1; idx < ARRAY_SIZE(sel); idx++)
+-		if (sel[idx] != NULL)
+-			return sel[idx];
++	if (cand != NULL)
++		return cand;
+ 
+ 	if (ign->fb_tunnel_dev->flags & IFF_UP)
+ 		return netdev_priv(ign->fb_tunnel_dev);
diff --git a/testing/linux-vserver-sources/APKBUILD b/testing/linux-vserver-sources/APKBUILD
new file mode 100644
index 00000000..03e34933
--- /dev/null
+++ b/testing/linux-vserver-sources/APKBUILD
@@ -0,0 +1,39 @@
+# Maintainer: Natanael Copa <ncopa@alpinelinux.org>
+_suff=vserver
+pkgname=linux-$_suff-sources
+pkgver=2.6.28.7
+pkgdesc="Linux kernel sources with vserver patch"
+_kernver=2.6.28
+_vsver=2.3.0.36.7
+pkgrel=0
+options="!strip"
+license=GPL-2
+url="http://linux-vserver.org"
+source="ftp://ftp.kernel.org/pub/linux/kernel/v2.6/linux-$_kernver.tar.bz2
+	ftp://ftp.kernel.org/pub/linux/kernel/v2.6/patch-$pkgver.bz2
+	http://vserver.13thfloor.at/Experimental/patch-$pkgver-vs$_vsver.diff
+	0001-linux-2.6.28.5-ipgre-strict-binding.patch
+	0002-linux-2.6.28.5-ipgre-optimize-hash-lookup.patch
+	"
+
+build() {
+	cd $srcdir/linux-$_kernver
+	if [ "$_kernver" != "$pkgver" ]; then
+		bunzip2 -c < ../patch-$pkgver.bz2 | patch -p1 || return 1
+	fi
+
+	for i in ../*.patch; do
+		msg "Applying $i..."
+		patch -p1 < $i || return 1
+	done
+
+	mkdir -p "$pkgdir/usr/src"
+	cd "$srcdir"
+	mv "linux-$_kernver" "$pkgdir/usr/src/linux-$pkgver-$_suff"
+}
+
+md5sums="d351e44709c9810b85e29b877f50968a  linux-2.6.28.tar.bz2
+346c912ebaffcf84361859014009be50  patch-2.6.28.7.bz2
+00587a89fc85b5a21caed34de067bbe2  patch-2.6.28.7-vs2.3.0.36.7.diff
+7673b4521283ad41434a18ca18b16ad8  0001-linux-2.6.28.5-ipgre-strict-binding.patch
+8f405c738b150c532c46eaad5390cca2  0002-linux-2.6.28.5-ipgre-optimize-hash-lookup.patch"