bump kernel to 3.14.26

1 files changed, 211 insertions, 0 deletions

diff --git a/target/mips/mikrotik-rb4xx/patches/3.14.26/0018-net-allow-PHY-drivers-to-insert-packet-mangle-hooks.patch b/target/mips/mikrotik-rb4xx/patches/3.14.26/0018-net-allow-PHY-drivers-to-insert-packet-mangle-hooks.patch
new file mode 100644
index 000000000..6a372c8f1
--- /dev/null
+++ b/target/mips/mikrotik-rb4xx/patches/3.14.26/0018-net-allow-PHY-drivers-to-insert-packet-mangle-hooks.patch
@@ -0,0 +1,211 @@
+From ebca842041d737b7441748a17ffd535aab851fce Mon Sep 17 00:00:00 2001
+From: Phil Sutter <phil@nwl.cc>
+Date: Tue, 13 May 2014 01:32:11 +0200
+Subject: [PATCH] net: allow PHY drivers to insert packet mangle hooks
+
+---
+ include/linux/netdevice.h |  8 ++++++++
+ include/linux/skbuff.h    | 14 ++++----------
+ include/uapi/linux/if.h   |  1 +
+ net/Kconfig               |  6 ++++++
+ net/core/dev.c            | 36 ++++++++++++++++++++++++++++--------
+ net/core/skbuff.c         | 17 +++++++++++++++++
+ net/ethernet/eth.c        |  6 ++++++
+ 7 files changed, 70 insertions(+), 18 deletions(-)
+
+diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
+index 911718f..8e8dd46 100644
+--- a/include/linux/netdevice.h
++++ b/include/linux/netdevice.h
+@@ -1245,6 +1245,11 @@ struct net_device {
+ 	const struct ethtool_ops *ethtool_ops;
+ 	const struct forwarding_accel_ops *fwd_ops;
+ 
++#ifdef CONFIG_ETHERNET_PACKET_MANGLE
++	void (*eth_mangle_rx)(struct net_device *dev, struct sk_buff *skb);
++	struct sk_buff *(*eth_mangle_tx)(struct net_device *dev, struct sk_buff *skb);
++#endif
++
+ 	/* Hardware header description */
+ 	const struct header_ops *header_ops;
+ 
+@@ -1313,6 +1318,9 @@ struct net_device {
+ 	void			*ax25_ptr;	/* AX.25 specific data */
+ 	struct wireless_dev	*ieee80211_ptr;	/* IEEE 802.11 specific data,
+ 						   assign before registering */
++#ifdef CONFIG_ETHERNET_PACKET_MANGLE
++	void			*phy_ptr; /* PHY device specific data */
++#endif
+ 
+ /*
+  * Cache lines mostly used on receive path (including eth_type_trans())
+diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
+index 15ede6a..5530766 100644
+--- a/include/linux/skbuff.h
++++ b/include/linux/skbuff.h
+@@ -1858,6 +1858,10 @@ static inline int pskb_trim(struct sk_buff *skb, unsigned int len)
+ 	return (len < skb->len) ? __pskb_trim(skb, len) : 0;
+ }
+ 
++extern struct sk_buff *__netdev_alloc_skb_ip_align(struct net_device *dev,
++		unsigned int length, gfp_t gfp);
++
++
+ /**
+  *	pskb_trim_unique - remove end from a paged unique (not cloned) buffer
+  *	@skb: buffer to alter
+@@ -1966,16 +1970,6 @@ static inline struct sk_buff *dev_alloc_skb(unsigned int length)
+ }
+ 
+ 
+-static inline struct sk_buff *__netdev_alloc_skb_ip_align(struct net_device *dev,
+-		unsigned int length, gfp_t gfp)
+-{
+-	struct sk_buff *skb = __netdev_alloc_skb(dev, length + NET_IP_ALIGN, gfp);
+-
+-	if (NET_IP_ALIGN && skb)
+-		skb_reserve(skb, NET_IP_ALIGN);
+-	return skb;
+-}
+-
+ static inline struct sk_buff *netdev_alloc_skb_ip_align(struct net_device *dev,
+ 		unsigned int length)
+ {
+diff --git a/include/uapi/linux/if.h b/include/uapi/linux/if.h
+index d758163..7ffa548 100644
+--- a/include/uapi/linux/if.h
++++ b/include/uapi/linux/if.h
+@@ -84,6 +84,7 @@
+ #define IFF_LIVE_ADDR_CHANGE 0x100000	/* device supports hardware address
+ 					 * change when it's running */
+ #define IFF_MACVLAN 0x200000		/* Macvlan device */
++#define IFF_NO_IP_ALIGN	0x400000	/* do not ip-align allocated rx pkts */
+ 
+ 
+ #define IF_GET_IFACE	0x0001		/* for querying only */
+diff --git a/net/Kconfig b/net/Kconfig
+index e411046..970c52a 100644
+--- a/net/Kconfig
++++ b/net/Kconfig
+@@ -24,6 +24,12 @@ menuconfig NET
+ 
+ if NET
+ 
++config ETHERNET_PACKET_MANGLE
++	bool
++	help
++	  This option can be selected by phy drivers that need to mangle
++	  packets going in or out of an ethernet device.
++
+ config WANT_COMPAT_NETLINK_MESSAGES
+ 	bool
+ 	help
+diff --git a/net/core/dev.c b/net/core/dev.c
+index fccc195..2e0ba23 100644
+--- a/net/core/dev.c
++++ b/net/core/dev.c
+@@ -2607,10 +2607,20 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
+ 		if (!list_empty(&ptype_all))
+ 			dev_queue_xmit_nit(skb, dev);
+ 
+-		skb_len = skb->len;
+-		trace_net_dev_start_xmit(skb, dev);
+-		rc = ops->ndo_start_xmit(skb, dev);
+-		trace_net_dev_xmit(skb, rc, dev, skb_len);
++#ifdef CONFIG_ETHERNET_PACKET_MANGLE
++		if (!dev->eth_mangle_tx ||
++		    (skb = dev->eth_mangle_tx(dev, skb)) != NULL)
++#else
++		if (1)
++#endif
++		{
++			skb_len = skb->len;
++			trace_net_dev_start_xmit(skb, dev);
++			rc = ops->ndo_start_xmit(skb, dev);
++			trace_net_dev_xmit(skb, rc, dev, skb_len);
++		} else {
++			rc = NETDEV_TX_OK;
++		}
+ 		if (rc == NETDEV_TX_OK)
+ 			txq_trans_update(txq);
+ 		return rc;
+@@ -2626,10 +2636,20 @@ gso:
+ 		if (!list_empty(&ptype_all))
+ 			dev_queue_xmit_nit(nskb, dev);
+ 
+-		skb_len = nskb->len;
+-		trace_net_dev_start_xmit(nskb, dev);
+-		rc = ops->ndo_start_xmit(nskb, dev);
+-		trace_net_dev_xmit(nskb, rc, dev, skb_len);
++#ifdef CONFIG_ETHERNET_PACKET_MANGLE
++		if (!dev->eth_mangle_tx ||
++		    (nskb = dev->eth_mangle_tx(dev, nskb)) != NULL)
++#else
++		if (1)
++#endif
++		{
++			skb_len = nskb->len;
++			trace_net_dev_start_xmit(nskb, dev);
++			rc = ops->ndo_start_xmit(nskb, dev);
++			trace_net_dev_xmit(nskb, rc, dev, skb_len);
++		} else {
++			rc = NETDEV_TX_OK;
++		}
+ 		if (unlikely(rc != NETDEV_TX_OK)) {
+ 			if (rc & ~NETDEV_TX_MASK)
+ 				goto out_kfree_gso_skb;
+diff --git a/net/core/skbuff.c b/net/core/skbuff.c
+index e5ae776e..400ff2a 100644
+--- a/net/core/skbuff.c
++++ b/net/core/skbuff.c
+@@ -62,6 +62,7 @@
+ #include <linux/scatterlist.h>
+ #include <linux/errqueue.h>
+ #include <linux/prefetch.h>
++#include <uapi/linux/if.h>
+ 
+ #include <net/protocol.h>
+ #include <net/dst.h>
+@@ -439,6 +440,22 @@ struct sk_buff *__netdev_alloc_skb(struct net_device *dev,
+ }
+ EXPORT_SYMBOL(__netdev_alloc_skb);
+ 
++struct sk_buff *__netdev_alloc_skb_ip_align(struct net_device *dev,
++		unsigned int length, gfp_t gfp)
++{
++	struct sk_buff *skb = __netdev_alloc_skb(dev, length + NET_IP_ALIGN, gfp);
++
++#ifdef CONFIG_ETHERNET_PACKET_MANGLE
++	if (dev && (dev->priv_flags & IFF_NO_IP_ALIGN))
++		return skb;
++#endif
++
++	if (NET_IP_ALIGN && skb)
++		skb_reserve(skb, NET_IP_ALIGN);
++	return skb;
++}
++EXPORT_SYMBOL(__netdev_alloc_skb_ip_align);
++
+ void skb_add_rx_frag(struct sk_buff *skb, int i, struct page *page, int off,
+ 		     int size, unsigned int truesize)
+ {
+diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c
+index 5dc638c..f4fd124 100644
+--- a/net/ethernet/eth.c
++++ b/net/ethernet/eth.c
+@@ -161,6 +161,12 @@ __be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev)
+ 	const struct ethhdr *eth;
+ 
+ 	skb->dev = dev;
++
++#ifdef CONFIG_ETHERNET_PACKET_MANGLE
++	if (dev->eth_mangle_rx)
++		dev->eth_mangle_rx(dev, skb);
++#endif
++
+ 	skb_reset_mac_header(skb);
+ 	skb_pull_inline(skb, ETH_HLEN);
+ 	eth = eth_hdr(skb);
+-- 
+1.8.5.3
+