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Diffstat (limited to 'target/mips/mikrotik-rb4xx/patches/4.1.10/0018-net-allow-PHY-drivers-to-insert-packet-mangle-hooks.patch')
-rw-r--r--target/mips/mikrotik-rb4xx/patches/4.1.10/0018-net-allow-PHY-drivers-to-insert-packet-mangle-hooks.patch167
1 files changed, 167 insertions, 0 deletions
diff --git a/target/mips/mikrotik-rb4xx/patches/4.1.10/0018-net-allow-PHY-drivers-to-insert-packet-mangle-hooks.patch b/target/mips/mikrotik-rb4xx/patches/4.1.10/0018-net-allow-PHY-drivers-to-insert-packet-mangle-hooks.patch
new file mode 100644
index 000000000..1a94f7e54
--- /dev/null
+++ b/target/mips/mikrotik-rb4xx/patches/4.1.10/0018-net-allow-PHY-drivers-to-insert-packet-mangle-hooks.patch
@@ -0,0 +1,167 @@
+diff -Nur linux-4.1.6.orig/include/linux/netdevice.h linux-4.1.6/include/linux/netdevice.h
+--- linux-4.1.6.orig/include/linux/netdevice.h 2015-09-13 22:24:50.977669635 +0200
++++ linux-4.1.6/include/linux/netdevice.h 2015-09-13 22:25:26.259637337 +0200
+@@ -1270,6 +1270,7 @@
+ IFF_XMIT_DST_RELEASE_PERM = 1<<22,
+ IFF_IPVLAN_MASTER = 1<<23,
+ IFF_IPVLAN_SLAVE = 1<<24,
++ IFF_NO_IP_ALIGN = 1<<25,
+ };
+
+ #define IFF_802_1Q_VLAN IFF_802_1Q_VLAN
+@@ -1297,6 +1298,7 @@
+ #define IFF_XMIT_DST_RELEASE_PERM IFF_XMIT_DST_RELEASE_PERM
+ #define IFF_IPVLAN_MASTER IFF_IPVLAN_MASTER
+ #define IFF_IPVLAN_SLAVE IFF_IPVLAN_SLAVE
++#define IFF_NO_IP_ALIGN IFF_NO_IP_ALIGN
+
+ /**
+ * struct net_device - The DEVICE structure.
+@@ -1567,6 +1569,11 @@
+ const struct swdev_ops *swdev_ops;
+ #endif
+
++#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
++
+ const struct header_ops *header_ops;
+
+ unsigned int flags;
+@@ -1631,6 +1638,10 @@
+ struct mpls_dev __rcu *mpls_ptr;
+ #endif
+
++#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 -Nur linux-4.1.6.orig/include/linux/skbuff.h linux-4.1.6/include/linux/skbuff.h
+--- linux-4.1.6.orig/include/linux/skbuff.h 2015-09-13 22:24:50.981669405 +0200
++++ linux-4.1.6/include/linux/skbuff.h 2015-09-13 22:25:26.267636876 +0200
+@@ -2068,6 +2068,10 @@
+ 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
+@@ -2176,16 +2180,6 @@
+ }
+
+
+-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 -Nur linux-4.1.6.orig/net/core/dev.c linux-4.1.6/net/core/dev.c
+--- linux-4.1.6.orig/net/core/dev.c 2015-09-13 22:24:51.109662032 +0200
++++ linux-4.1.6/net/core/dev.c 2015-09-13 22:25:26.267636876 +0200
+@@ -2657,10 +2657,20 @@
+ if (!list_empty(&ptype_all) || !list_empty(&dev->ptype_all))
+ dev_queue_xmit_nit(skb, dev);
+
+- len = skb->len;
+- trace_net_dev_start_xmit(skb, dev);
+- rc = netdev_start_xmit(skb, dev, txq, more);
+- trace_net_dev_xmit(skb, rc, dev, len);
++#ifdef CONFIG_ETHERNET_PACKET_MANGLE
++ if (!dev->eth_mangle_tx ||
++ (skb = dev->eth_mangle_tx(dev, skb)) != NULL)
++#else
++ if (1)
++#endif
++ {
++ len = skb->len;
++ trace_net_dev_start_xmit(skb, dev);
++ rc = netdev_start_xmit(skb, dev, txq, more);
++ trace_net_dev_xmit(skb, rc, dev, len);
++ } else {
++ rc = NETDEV_TX_OK;
++ }
+
+ return rc;
+ }
+diff -Nur linux-4.1.6.orig/net/core/skbuff.c linux-4.1.6/net/core/skbuff.c
+--- linux-4.1.6.orig/net/core/skbuff.c 2015-09-13 22:24:51.113661802 +0200
++++ linux-4.1.6/net/core/skbuff.c 2015-09-13 22:25:49.410303821 +0200
+@@ -63,6 +63,7 @@
+ #include <linux/errqueue.h>
+ #include <linux/prefetch.h>
+ #include <linux/if_vlan.h>
++#include <linux/if.h>
+ #include <linux/locallock.h>
+
+ #include <net/protocol.h>
+@@ -570,6 +571,22 @@
+ }
+ EXPORT_SYMBOL(__napi_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 -Nur linux-4.1.6.orig/net/ethernet/eth.c linux-4.1.6/net/ethernet/eth.c
+--- linux-4.1.6.orig/net/ethernet/eth.c 2015-08-17 05:52:51.000000000 +0200
++++ linux-4.1.6/net/ethernet/eth.c 2015-09-13 22:25:26.271636646 +0200
+@@ -155,6 +155,12 @@
+ 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);
+diff -Nur linux-4.1.6.orig/net/Kconfig linux-4.1.6/net/Kconfig
+--- linux-4.1.6.orig/net/Kconfig 2015-08-17 05:52:51.000000000 +0200
++++ linux-4.1.6/net/Kconfig 2015-09-13 22:25:26.279636185 +0200
+@@ -25,6 +25,12 @@
+
+ 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