Remove OVS quirk

The OVS project has finally added support for the 4.4 kernel so this
quirk is no longer necessary.

Upstream status: NA

Change-Id: I62a40b96c16b8a7754297fa108240568fa7b5646
Signed-off-by: Don Dugger <n0ano@n0ano.com>

1 files changed, 0 insertions, 246 deletions

diff --git a/patches/ovs/0001-Add-Linux-4.4-support.patch b/patches/ovs/0001-Add-Linux-4.4-support.patch
deleted file mode 100644
index a580bc267..000000000
--- a/patches/ovs/0001-Add-Linux-4.4-support.patch
+++ /dev/null
@@ -1,246 +0,0 @@
-From a4c2305b6190ce24ceaafb9f85fc5a67787fb71d Mon Sep 17 00:00:00 2001
-From: Donald Dugger <n0ano@n0ano.com>
-Date: Mon, 9 May 2016 05:14:12 +0000
-Subject: [PATCH] Add Linux 4.4 support
-
-A bit cleaner than my previous patch.
-  http://patchwork.ozlabs.org/patch/595969/
-
-Though I couldn't figure out a clean solution for ip6_local_out(),
-genl_notify(), and vport-vxlan
-
-Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>
-
-Note that this patch has been rejected for the upstream OVS tree as
-the maintainers feel a different apporach (backporting all Linux
-patches that affect the OVS code).  We'll just use this patch until
-the official OVS tree is updated to support Linux 4.4.
-
-Upstream status: NA
-
-Signed-off-by: Don Dugger <n0ano@n0ano.com>
----
- acinclude.m4                                         |  4 ++--
- datapath/actions.c                                   |  6 ++++--
- datapath/datapath.c                                  |  6 +++++-
- datapath/linux/compat/include/linux/netfilter_ipv6.h |  2 +-
- datapath/linux/compat/include/net/ip.h               | 19 ++++++++++++++++---
- datapath/linux/compat/include/net/ip6_tunnel.h       |  4 ++++
- datapath/linux/compat/include/net/vxlan.h            | 10 ++++++++++
- datapath/linux/compat/stt.c                          |  6 ++++++
- datapath/vport-vxlan.c                               |  5 +++++
- 9 files changed, 53 insertions(+), 9 deletions(-)
-
-diff --git a/acinclude.m4 b/acinclude.m4
-index 23015fe..22e75ec 100644
---- a/acinclude.m4
-+++ b/acinclude.m4
-@@ -134,10 +134,10 @@ AC_DEFUN([OVS_CHECK_LINUX], [
-     AC_MSG_RESULT([$kversion])
- 
-     if test "$version" -ge 4; then
--       if test "$version" = 4 && test "$patchlevel" -le 3; then
-+       if test "$version" = 4 && test "$patchlevel" -le 4; then
-           : # Linux 4.x
-        else
--          AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.3.x is not supported (please refer to the FAQ for advice)])
-+          AC_ERROR([Linux kernel in $KBUILD is version $kversion, but version newer than 4.4.x is not supported (please refer to the FAQ for advice)])
-        fi
-     elif test "$version" = 3 && test "$patchlevel" -ge 10; then
-        : # Linux 3.x
-diff --git a/datapath/actions.c b/datapath/actions.c
-index dcf8591..242e710 100644
---- a/datapath/actions.c
-+++ b/datapath/actions.c
-@@ -702,7 +702,8 @@ static void ovs_fragment(struct vport *vport, struct sk_buff *skb, u16 mru,
- 		skb_dst_set_noref(skb, &ovs_dst);
- 		IPCB(skb)->frag_max_size = mru;
- 
--		ip_do_fragment(skb->sk, skb, ovs_vport_output);
-+		ip_do_fragment(NET_ARG(dev_net(ovs_dst.dev))
-+			skb->sk, skb, ovs_vport_output);
- 		refdst_drop(orig_dst);
- 	} else if (ethertype == htons(ETH_P_IPV6)) {
- 		const struct nf_ipv6_ops *v6ops = nf_get_ipv6_ops();
-@@ -723,7 +724,8 @@ static void ovs_fragment(struct vport *vport, struct sk_buff *skb, u16 mru,
- 		skb_dst_set_noref(skb, &ovs_rt.dst);
- 		IP6CB(skb)->frag_max_size = mru;
- 
--		v6ops->fragment(skb->sk, skb, ovs_vport_output);
-+		v6ops->fragment(NET_ARG(dev_net(ovs_rt.dst.dev))
-+			skb->sk, skb, ovs_vport_output);
- 		refdst_drop(orig_dst);
- 	} else {
- 		WARN_ONCE(1, "Failed fragment ->%s: eth=%04x, MRU=%d, MTU=%d.",
-diff --git a/datapath/datapath.c b/datapath/datapath.c
-index 5bec072..ba19c01 100644
---- a/datapath/datapath.c
-+++ b/datapath/datapath.c
-@@ -95,8 +95,12 @@ static bool ovs_must_notify(struct genl_family *family, struct genl_info *info,
- static void ovs_notify(struct genl_family *family, struct genl_multicast_group *grp,
- 		       struct sk_buff *skb, struct genl_info *info)
- {
--	genl_notify(family, skb, genl_info_net(info),
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0)
-+	genl_notify(family, skb, info, GROUP_ID(grp), GFP_KERNEL);
-+#else
-+	genl_notify(family, skb, genl_info_net(info),
- 		    info->snd_portid, GROUP_ID(grp), info->nlhdr, GFP_KERNEL);
-+#endif
- }
- 
- /**
-diff --git a/datapath/linux/compat/include/linux/netfilter_ipv6.h b/datapath/linux/compat/include/linux/netfilter_ipv6.h
-index 8d896fb..9f64002 100644
---- a/datapath/linux/compat/include/linux/netfilter_ipv6.h
-+++ b/datapath/linux/compat/include/linux/netfilter_ipv6.h
-@@ -13,7 +13,7 @@
-  * the callback parameter needs to be in the form that older kernels accept.
-  * We don't backport the other ipv6_ops as they're currently unused by OVS. */
- struct ovs_nf_ipv6_ops {
--	int (*fragment)(struct sock *sk, struct sk_buff *skb,
-+	int (*fragment)(NET_ARG(net) struct sock *sk, struct sk_buff *skb,
- 			int (*output)(OVS_VPORT_OUTPUT_PARAMS));
- };
- #define nf_ipv6_ops ovs_nf_ipv6_ops
-diff --git a/datapath/linux/compat/include/net/ip.h b/datapath/linux/compat/include/net/ip.h
-index c283ad0..483662c 100644
---- a/datapath/linux/compat/include/net/ip.h
-+++ b/datapath/linux/compat/include/net/ip.h
-@@ -59,8 +59,20 @@ static inline unsigned int rpl_ip_skb_dst_mtu(const struct sk_buff *skb)
- #define ip_skb_dst_mtu rpl_ip_skb_dst_mtu
- #endif /* HAVE_IP_SKB_DST_MTU */
- 
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0)
-+#define NET_PARAM(x) struct net *x,
-+#define NET_ARG(x) x,
-+#define NET_DEV_NET(x) dev_net(x)
-+#define NET_DECLARE_INIT(x,y)
-+#else
-+#define NET_PARAM(x)
-+#define NET_ARG(x)
-+#define NET_DEV_NET(x)
-+#define NET_DECLARE_INIT(x,y) struct net *x = y;
-+#endif
-+
- #ifdef HAVE_IP_FRAGMENT_TAKES_SOCK
--#define OVS_VPORT_OUTPUT_PARAMS struct sock *sock, struct sk_buff *skb
-+#define OVS_VPORT_OUTPUT_PARAMS NET_PARAM(net) struct sock *sock, struct sk_buff *skb
- #else
- #define OVS_VPORT_OUTPUT_PARAMS struct sk_buff *skb
- #endif
-@@ -82,12 +94,13 @@ static inline bool ip_defrag_user_in_between(u32 user,
- #endif /* < v4.2 */
- 
- #ifndef HAVE_IP_DO_FRAGMENT
--static inline int rpl_ip_do_fragment(struct sock *sk, struct sk_buff *skb,
-+static inline int rpl_ip_do_fragment(NET_PARAM(net) struct sock *sk, struct sk_buff *skb,
- 				     int (*output)(OVS_VPORT_OUTPUT_PARAMS))
- {
- 	unsigned int mtu = ip_skb_dst_mtu(skb);
- 	struct iphdr *iph = ip_hdr(skb);
- 	struct rtable *rt = skb_rtable(skb);
-+	NET_DECLARE_INIT(net, dev_net(dev));
- 	struct net_device *dev = rt->dst.dev;
- 
- 	if (unlikely(((iph->frag_off & htons(IP_DF)) && !skb->ignore_df) ||
-@@ -95,7 +108,7 @@ static inline int rpl_ip_do_fragment(struct sock *sk, struct sk_buff *skb,
- 		      IPCB(skb)->frag_max_size > mtu))) {
- 
- 		pr_warn("Dropping packet in ip_do_fragment()\n");
--		IP_INC_STATS(dev_net(dev), IPSTATS_MIB_FRAGFAILS);
-+		IP_INC_STATS(net, IPSTATS_MIB_FRAGFAILS);
- 		kfree_skb(skb);
- 		return -EMSGSIZE;
- 	}
-diff --git a/datapath/linux/compat/include/net/ip6_tunnel.h b/datapath/linux/compat/include/net/ip6_tunnel.h
-index ce65087..eacf9ca 100644
---- a/datapath/linux/compat/include/net/ip6_tunnel.h
-+++ b/datapath/linux/compat/include/net/ip6_tunnel.h
-@@ -17,11 +17,15 @@ static inline void ip6tunnel_xmit(struct sock *sk, struct sk_buff *skb,
- 
- 	pkt_len = skb->len - skb_inner_network_offset(skb);
- 	/* TODO: Fix GSO for ipv6 */
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0)
-+	err = ip6_local_out(dev_net(dev), sk, skb);
-+#else
- #ifdef HAVE_IP6_LOCAL_OUT_SK
- 	err = ip6_local_out_sk(sk, skb);
- #else
- 	err = ip6_local_out(skb);
- #endif
-+#endif /* >= kernel 4.4 */
- 	if (net_xmit_eval(err) != 0)
- 		pkt_len = net_xmit_eval(err);
- 	else
-diff --git a/datapath/linux/compat/include/net/vxlan.h b/datapath/linux/compat/include/net/vxlan.h
-index 75a5a7a..589cc0d 100644
---- a/datapath/linux/compat/include/net/vxlan.h
-+++ b/datapath/linux/compat/include/net/vxlan.h
-@@ -218,10 +218,20 @@ struct vxlan_dev {
- struct net_device *rpl_vxlan_dev_create(struct net *net, const char *name,
- 				    u8 name_assign_type, struct vxlan_config *conf);
- 
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0)
-+static inline __be16 vxlan_dev_dst_port(struct vxlan_dev *vxlan,
-+					unsigned short family)
-+{
-+	if (family == AF_INET6)
-+		return inet_sk(vxlan->vn6_sock->sock->sk)->inet_sport;
-+	return inet_sk(vxlan->vn4_sock->sock->sk)->inet_sport;
-+}
-+#else
- static inline __be16 vxlan_dev_dst_port(struct vxlan_dev *vxlan)
- {
- 	return inet_sk(vxlan->vn_sock->sock->sk)->inet_sport;
- }
-+#endif
- 
- static inline netdev_features_t vxlan_features_check(struct sk_buff *skb,
- 						     netdev_features_t features)
-diff --git a/datapath/linux/compat/stt.c b/datapath/linux/compat/stt.c
-index 86d225e..6b1e3a3 100644
---- a/datapath/linux/compat/stt.c
-+++ b/datapath/linux/compat/stt.c
-@@ -1544,7 +1544,11 @@ static void clean_percpu(struct work_struct *work)
- }
- 
- #ifdef HAVE_NF_HOOKFN_ARG_OPS
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0)
-+#define FIRST_PARAM void *priv
-+#else
- #define FIRST_PARAM const struct nf_hook_ops *ops
-+#endif /* >= kernel 4.4 */
- #else
- #define FIRST_PARAM unsigned int hooknum
- #endif
-@@ -1592,7 +1596,9 @@ static unsigned int nf_ip_hook(FIRST_PARAM, struct sk_buff *skb, LAST_PARAM)
- 
- static struct nf_hook_ops nf_hook_ops __read_mostly = {
- 	.hook           = nf_ip_hook,
-+#if LINUX_VERSION_CODE < KERNEL_VERSION(4,4,0)
- 	.owner          = THIS_MODULE,
-+#endif
- 	.pf             = NFPROTO_IPV4,
- 	.hooknum        = NF_INET_LOCAL_IN,
- 	.priority       = INT_MAX,
-diff --git a/datapath/vport-vxlan.c b/datapath/vport-vxlan.c
-index c05f5d4..3cbb568 100644
---- a/datapath/vport-vxlan.c
-+++ b/datapath/vport-vxlan.c
-@@ -153,7 +153,12 @@ static int vxlan_get_egress_tun_info(struct vport *vport, struct sk_buff *skb,
- {
- 	struct vxlan_dev *vxlan = netdev_priv(vport->dev);
- 	struct net *net = ovs_dp_get_net(vport->dp);
-+#if LINUX_VERSION_CODE >= KERNEL_VERSION(4,4,0)
-+	unsigned short family = ip_tunnel_info_af(upcall->egress_tun_info);
-+	__be16 dst_port = vxlan_dev_dst_port(vxlan, family);
-+#else
- 	__be16 dst_port = vxlan_dev_dst_port(vxlan);
-+#endif
- 	__be16 src_port;
- 	int port_min;
- 	int port_max;
--- 
-1.9.1
-