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kernel: replace GRO optimization patch with a new one that supports VLANs/bridges with different MAC addresses

Browse source 
Signed-off-by: Felix Fietkau <nbd@openwrt.org>

SVN-Revision: 44877
This commit is contained in:
Felix Fietkau 2015-03-18 18:22:41 +00:00
parent 17afb853ee
commit b011293d0b
9 changed files with 494 additions and 92 deletions
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160
target/linux/generic/patches-3.18/680-NET-skip-GRO-for-foreign-MAC-addresses.patch Normal file
View file

@ -0,0 +1,160 @@
Subject: NET: skip GRO for foreign MAC addresses
For network drivers using napi_gro_receive, packets are run through GRO,
even when the destination MAC address does not match, and they're supposed
to be delivered to another host behind a different bridge port.
This can be very expensive, because for drivers without TSO or scatter-
gather, this can only be undone by copying the skb and checksumming it
again.
To be able to track foreign MAC addresses in an inexpensive way, create
a mask of changed bits in MAC addresses of upper devices. This allows
handling VLANs and bridge devices with different addresses (as long as
they are not too different).
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4003,6 +4003,9 @@ static enum gro_result dev_gro_receive(s
enum gro_result ret;
int grow;
+ if (skb->gro_skip)
+ goto normal;
+
if (!(skb->dev->features & NETIF_F_GRO))
goto normal;
@@ -5066,6 +5069,48 @@ static void __netdev_adjacent_dev_unlink
&upper_dev->adj_list.lower);
}
+static void __netdev_addr_mask(unsigned char *mask, const unsigned char *addr,
+ struct net_device *dev)
+{
+ int i;
+
+ for (i = 0; i < dev->addr_len; i++)
+ mask[i] |= addr[i] ^ dev->dev_addr[i];
+}
+
+static void __netdev_upper_mask(unsigned char *mask, struct net_device *dev,
+ struct net_device *lower)
+{
+ struct net_device *cur;
+ struct list_head *iter;
+
+ netdev_for_each_upper_dev_rcu(dev, cur, iter) {
+ __netdev_addr_mask(mask, cur->dev_addr, lower);
+ __netdev_upper_mask(mask, cur, lower);
+ }
+}
+
+static void __netdev_update_addr_mask(struct net_device *dev)
+{
+ unsigned char mask[MAX_ADDR_LEN];
+ struct net_device *cur;
+ struct list_head *iter;
+
+ memset(mask, 0, sizeof(mask));
+ __netdev_upper_mask(mask, dev, dev);
+ memcpy(dev->local_addr_mask, mask, dev->addr_len);
+
+ netdev_for_each_lower_dev(dev, cur, iter)
+ __netdev_update_addr_mask(cur);
+}
+
+static void netdev_update_addr_mask(struct net_device *dev)
+{
+ rcu_read_lock();
+ __netdev_update_addr_mask(dev);
+ rcu_read_unlock();
+}
+
static int __netdev_upper_dev_link(struct net_device *dev,
struct net_device *upper_dev, bool master,
void *private)
@@ -5126,6 +5171,7 @@ static int __netdev_upper_dev_link(struc
goto rollback_lower_mesh;
}
+ netdev_update_addr_mask(dev);
call_netdevice_notifiers(NETDEV_CHANGEUPPER, dev);
return 0;
@@ -5243,6 +5289,7 @@ void netdev_upper_dev_unlink(struct net_
list_for_each_entry(i, &upper_dev->all_adj_list.upper, list)
__netdev_adjacent_dev_unlink(dev, i->dev);
+ netdev_update_addr_mask(dev);
call_netdevice_notifiers(NETDEV_CHANGEUPPER, dev);
}
EXPORT_SYMBOL(netdev_upper_dev_unlink);
@@ -5762,6 +5809,7 @@ int dev_set_mac_address(struct net_devic
if (err)
return err;
dev->addr_assign_type = NET_ADDR_SET;
+ netdev_update_addr_mask(dev);
call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
add_device_randomness(dev->dev_addr, dev->addr_len);
return 0;
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1548,6 +1548,8 @@ struct net_device {
struct netdev_hw_addr_list mc;
struct netdev_hw_addr_list dev_addrs;
+ unsigned char local_addr_mask[MAX_ADDR_LEN];
+
#ifdef CONFIG_SYSFS
struct kset *queues_kset;
#endif
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -597,7 +597,8 @@ struct sk_buff {
#endif
__u8 ipvs_property:1;
__u8 inner_protocol_type:1;
- /* 4 or 6 bit hole */
+ __u8 gro_skip:1;
+ /* 3 or 5 bit hole */
#ifdef CONFIG_NET_SCHED
__u16 tc_index; /* traffic control index */
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c
@@ -172,6 +172,18 @@ u32 eth_get_headlen(void *data, unsigned
}
EXPORT_SYMBOL(eth_get_headlen);
+static inline bool
+eth_check_local_mask(const void *addr1, const void *addr2, const void *mask)
+{
+ const u16 *a1 = addr1;
+ const u16 *a2 = addr2;
+ const u16 *m = mask;
+
+ return (((a1[0] ^ a2[0]) & ~m[0]) |
+ ((a1[1] ^ a2[1]) & ~m[1]) |
+ ((a1[2] ^ a2[2]) & ~m[2]));
+}
+
/**
* eth_type_trans - determine the packet's protocol ID.
* @skb: received socket data
@@ -199,8 +211,12 @@ __be16 eth_type_trans(struct sk_buff *sk
skb->pkt_type = PACKET_MULTICAST;
}
else if (unlikely(!ether_addr_equal_64bits(eth->h_dest,
- dev->dev_addr)))
+ dev->dev_addr))) {
skb->pkt_type = PACKET_OTHERHOST;
+ if (eth_check_local_mask(eth->h_dest, dev->dev_addr,
+ dev->local_addr_mask))
+ skb->gro_skip = 1;
+ }
/*
* Some variants of DSA tagging don't have an ethertype field

26
target/linux/generic/patches-3.18/680-net-skip-gro-for-otherhost-packets.patch
View file

@ -1,26 +0,0 @@
Subject: NET: skip GRO for otherhost packets
For network drivers using napi_gro_receive, packets are run through GRO,
even when the destination MAC address does not match, and they're supposed
to be delivered to another host behind a different bridge port.
This can be very expensive, because for drivers without TSO or scatter-
gather, this can only be undone by copying the skb and checksumming it
again.
Fix this by leaving skbs with PACKET_OTHERHOST untouched.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4003,6 +4003,9 @@ static enum gro_result dev_gro_receive(s
enum gro_result ret;
int grow;
+ if (skb->pkt_type == PACKET_OTHERHOST)
+ goto normal;
+
if (!(skb->dev->features & NETIF_F_GRO))
goto normal;

8
target/linux/generic/patches-3.18/721-phy_packets.patch
View file

@ -28,7 +28,7 @@
const struct header_ops *header_ops;
unsigned int flags;
@@ -1577,6 +1584,10 @@ struct net_device {
@@ -1579,6 +1586,10 @@ struct net_device {
void *ax25_ptr;
struct wireless_dev *ieee80211_ptr;
@ -41,7 +41,7 @@
*/
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -2052,6 +2052,10 @@ static inline int pskb_trim(struct sk_bu
@@ -2053,6 +2053,10 @@ static inline int pskb_trim(struct sk_bu
return (len < skb->len) ? __pskb_trim(skb, len) : 0;
}
@ -52,7 +52,7 @@
/**
* pskb_trim_unique - remove end from a paged unique (not cloned) buffer
* @skb: buffer to alter
@@ -2178,16 +2182,6 @@ static inline struct sk_buff *dev_alloc_
@@ -2179,16 +2183,6 @@ static inline struct sk_buff *dev_alloc_
}
@ -146,7 +146,7 @@
{
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c
@@ -188,6 +188,12 @@ __be16 eth_type_trans(struct sk_buff *sk
@@ -200,6 +200,12 @@ __be16 eth_type_trans(struct sk_buff *sk
const struct ethhdr *eth;
skb->dev = dev;

160
target/linux/generic/patches-3.19/680-NET-skip-GRO-for-foreign-MAC-addresses.patch Normal file
View file

@ -0,0 +1,160 @@
Subject: NET: skip GRO for foreign MAC addresses
For network drivers using napi_gro_receive, packets are run through GRO,
even when the destination MAC address does not match, and they're supposed
to be delivered to another host behind a different bridge port.
This can be very expensive, because for drivers without TSO or scatter-
gather, this can only be undone by copying the skb and checksumming it
again.
To be able to track foreign MAC addresses in an inexpensive way, create
a mask of changed bits in MAC addresses of upper devices. This allows
handling VLANs and bridge devices with different addresses (as long as
they are not too different).
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3967,6 +3967,9 @@ static enum gro_result dev_gro_receive(s
enum gro_result ret;
int grow;
+ if (skb->gro_skip)
+ goto normal;
+
if (!(skb->dev->features & NETIF_F_GRO))
goto normal;
@@ -5113,6 +5116,48 @@ static void __netdev_adjacent_dev_unlink
&upper_dev->adj_list.lower);
}
+static void __netdev_addr_mask(unsigned char *mask, const unsigned char *addr,
+ struct net_device *dev)
+{
+ int i;
+
+ for (i = 0; i < dev->addr_len; i++)
+ mask[i] |= addr[i] ^ dev->dev_addr[i];
+}
+
+static void __netdev_upper_mask(unsigned char *mask, struct net_device *dev,
+ struct net_device *lower)
+{
+ struct net_device *cur;
+ struct list_head *iter;
+
+ netdev_for_each_upper_dev_rcu(dev, cur, iter) {
+ __netdev_addr_mask(mask, cur->dev_addr, lower);
+ __netdev_upper_mask(mask, cur, lower);
+ }
+}
+
+static void __netdev_update_addr_mask(struct net_device *dev)
+{
+ unsigned char mask[MAX_ADDR_LEN];
+ struct net_device *cur;
+ struct list_head *iter;
+
+ memset(mask, 0, sizeof(mask));
+ __netdev_upper_mask(mask, dev, dev);
+ memcpy(dev->local_addr_mask, mask, dev->addr_len);
+
+ netdev_for_each_lower_dev(dev, cur, iter)
+ __netdev_update_addr_mask(cur);
+}
+
+static void netdev_update_addr_mask(struct net_device *dev)
+{
+ rcu_read_lock();
+ __netdev_update_addr_mask(dev);
+ rcu_read_unlock();
+}
+
static int __netdev_upper_dev_link(struct net_device *dev,
struct net_device *upper_dev, bool master,
void *private)
@@ -5173,6 +5218,7 @@ static int __netdev_upper_dev_link(struc
goto rollback_lower_mesh;
}
+ netdev_update_addr_mask(dev);
call_netdevice_notifiers(NETDEV_CHANGEUPPER, dev);
return 0;
@@ -5290,6 +5336,7 @@ void netdev_upper_dev_unlink(struct net_
list_for_each_entry(i, &upper_dev->all_adj_list.upper, list)
__netdev_adjacent_dev_unlink(dev, i->dev);
+ netdev_update_addr_mask(dev);
call_netdevice_notifiers(NETDEV_CHANGEUPPER, dev);
}
EXPORT_SYMBOL(netdev_upper_dev_unlink);
@@ -5809,6 +5856,7 @@ int dev_set_mac_address(struct net_devic
if (err)
return err;
dev->addr_assign_type = NET_ADDR_SET;
+ netdev_update_addr_mask(dev);
call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
add_device_randomness(dev->dev_addr, dev->addr_len);
return 0;
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1583,6 +1583,8 @@ struct net_device {
struct netdev_hw_addr_list mc;
struct netdev_hw_addr_list dev_addrs;
+ unsigned char local_addr_mask[MAX_ADDR_LEN];
+
#ifdef CONFIG_SYSFS
struct kset *queues_kset;
#endif
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -605,7 +605,8 @@ struct sk_buff {
__u8 ipvs_property:1;
__u8 inner_protocol_type:1;
__u8 remcsum_offload:1;
- /* 3 or 5 bit hole */
+ __u8 gro_skip:1;
+ /* 2 or 4 bit hole */
#ifdef CONFIG_NET_SCHED
__u16 tc_index; /* traffic control index */
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c
@@ -172,6 +172,18 @@ u32 eth_get_headlen(void *data, unsigned
}
EXPORT_SYMBOL(eth_get_headlen);
+static inline bool
+eth_check_local_mask(const void *addr1, const void *addr2, const void *mask)
+{
+ const u16 *a1 = addr1;
+ const u16 *a2 = addr2;
+ const u16 *m = mask;
+
+ return (((a1[0] ^ a2[0]) & ~m[0]) |
+ ((a1[1] ^ a2[1]) & ~m[1]) |
+ ((a1[2] ^ a2[2]) & ~m[2]));
+}
+
/**
* eth_type_trans - determine the packet's protocol ID.
* @skb: received socket data
@@ -199,8 +211,12 @@ __be16 eth_type_trans(struct sk_buff *sk
skb->pkt_type = PACKET_MULTICAST;
}
else if (unlikely(!ether_addr_equal_64bits(eth->h_dest,
- dev->dev_addr)))
+ dev->dev_addr))) {
skb->pkt_type = PACKET_OTHERHOST;
+ if (eth_check_local_mask(eth->h_dest, dev->dev_addr,
+ dev->local_addr_mask))
+ skb->gro_skip = 1;
+ }
/*
* Some variants of DSA tagging don't have an ethertype field

26
target/linux/generic/patches-3.19/680-net-skip-gro-for-otherhost-packets.patch
View file

@ -1,26 +0,0 @@
Subject: NET: skip GRO for otherhost packets
For network drivers using napi_gro_receive, packets are run through GRO,
even when the destination MAC address does not match, and they're supposed
to be delivered to another host behind a different bridge port.
This can be very expensive, because for drivers without TSO or scatter-
gather, this can only be undone by copying the skb and checksumming it
again.
Fix this by leaving skbs with PACKET_OTHERHOST untouched.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -3967,6 +3967,9 @@ static enum gro_result dev_gro_receive(s
enum gro_result ret;
int grow;
+ if (skb->pkt_type == PACKET_OTHERHOST)
+ goto normal;
+
if (!(skb->dev->features & NETIF_F_GRO))
goto normal;

10
target/linux/generic/patches-3.19/721-phy_packets.patch
View file

@ -28,7 +28,7 @@
const struct header_ops *header_ops;
unsigned int flags;
@@ -1613,6 +1620,10 @@ struct net_device {
@@ -1615,6 +1622,10 @@ struct net_device {
struct wireless_dev *ieee80211_ptr;
struct wpan_dev *ieee802154_ptr;
@ -41,7 +41,7 @@
*/
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -2042,6 +2042,10 @@ static inline int pskb_trim(struct sk_bu
@@ -2043,6 +2043,10 @@ static inline int pskb_trim(struct sk_bu
return (len < skb->len) ? __pskb_trim(skb, len) : 0;
}
@ -52,7 +52,7 @@
/**
* pskb_trim_unique - remove end from a paged unique (not cloned) buffer
* @skb: buffer to alter
@@ -2168,16 +2172,6 @@ static inline struct sk_buff *dev_alloc_
@@ -2169,16 +2173,6 @@ static inline struct sk_buff *dev_alloc_
}
@ -121,7 +121,7 @@
#include <net/protocol.h>
#include <net/dst.h>
@@ -548,6 +549,22 @@ struct sk_buff *__napi_alloc_skb(struct
@@ -548,6 +549,22 @@ struct sk_buff *__napi_alloc_skb(struct
}
EXPORT_SYMBOL(__napi_alloc_skb);
@ -146,7 +146,7 @@
{
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c
@@ -188,6 +188,12 @@ __be16 eth_type_trans(struct sk_buff *sk
@@ -200,6 +200,12 @@ __be16 eth_type_trans(struct sk_buff *sk
const struct ethhdr *eth;
skb->dev = dev;

160
target/linux/generic/patches-4.0/680-NET-skip-GRO-for-foreign-MAC-addresses.patch Normal file
View file

@ -0,0 +1,160 @@
Subject: NET: skip GRO for foreign MAC addresses
For network drivers using napi_gro_receive, packets are run through GRO,
even when the destination MAC address does not match, and they're supposed
to be delivered to another host behind a different bridge port.
This can be very expensive, because for drivers without TSO or scatter-
gather, this can only be undone by copying the skb and checksumming it
again.
To be able to track foreign MAC addresses in an inexpensive way, create
a mask of changed bits in MAC addresses of upper devices. This allows
handling VLANs and bridge devices with different addresses (as long as
they are not too different).
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4005,6 +4005,9 @@ static enum gro_result dev_gro_receive(s
enum gro_result ret;
int grow;
+ if (skb->gro_skip)
+ goto normal;
+
if (!(skb->dev->features & NETIF_F_GRO))
goto normal;
@@ -5152,6 +5155,48 @@ static void __netdev_adjacent_dev_unlink
&upper_dev->adj_list.lower);
}
+static void __netdev_addr_mask(unsigned char *mask, const unsigned char *addr,
+ struct net_device *dev)
+{
+ int i;
+
+ for (i = 0; i < dev->addr_len; i++)
+ mask[i] |= addr[i] ^ dev->dev_addr[i];
+}
+
+static void __netdev_upper_mask(unsigned char *mask, struct net_device *dev,
+ struct net_device *lower)
+{
+ struct net_device *cur;
+ struct list_head *iter;
+
+ netdev_for_each_upper_dev_rcu(dev, cur, iter) {
+ __netdev_addr_mask(mask, cur->dev_addr, lower);
+ __netdev_upper_mask(mask, cur, lower);
+ }
+}
+
+static void __netdev_update_addr_mask(struct net_device *dev)
+{
+ unsigned char mask[MAX_ADDR_LEN];
+ struct net_device *cur;
+ struct list_head *iter;
+
+ memset(mask, 0, sizeof(mask));
+ __netdev_upper_mask(mask, dev, dev);
+ memcpy(dev->local_addr_mask, mask, dev->addr_len);
+
+ netdev_for_each_lower_dev(dev, cur, iter)
+ __netdev_update_addr_mask(cur);
+}
+
+static void netdev_update_addr_mask(struct net_device *dev)
+{
+ rcu_read_lock();
+ __netdev_update_addr_mask(dev);
+ rcu_read_unlock();
+}
+
static int __netdev_upper_dev_link(struct net_device *dev,
struct net_device *upper_dev, bool master,
void *private)
@@ -5212,6 +5257,7 @@ static int __netdev_upper_dev_link(struc
goto rollback_lower_mesh;
}
+ netdev_update_addr_mask(dev);
call_netdevice_notifiers(NETDEV_CHANGEUPPER, dev);
return 0;
@@ -5329,6 +5375,7 @@ void netdev_upper_dev_unlink(struct net_
list_for_each_entry(i, &upper_dev->all_adj_list.upper, list)
__netdev_adjacent_dev_unlink(dev, i->dev);
+ netdev_update_addr_mask(dev);
call_netdevice_notifiers(NETDEV_CHANGEUPPER, dev);
}
EXPORT_SYMBOL(netdev_upper_dev_unlink);
@@ -5868,6 +5915,7 @@ int dev_set_mac_address(struct net_devic
if (err)
return err;
dev->addr_assign_type = NET_ADDR_SET;
+ netdev_update_addr_mask(dev);
call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
add_device_randomness(dev->dev_addr, dev->addr_len);
return 0;
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -1589,6 +1589,8 @@ struct net_device {
struct netdev_hw_addr_list mc;
struct netdev_hw_addr_list dev_addrs;
+ unsigned char local_addr_mask[MAX_ADDR_LEN];
+
#ifdef CONFIG_SYSFS
struct kset *queues_kset;
#endif
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -609,7 +609,8 @@ struct sk_buff {
__u8 ipvs_property:1;
__u8 inner_protocol_type:1;
__u8 remcsum_offload:1;
- /* 3 or 5 bit hole */
+ __u8 gro_skip:1;
+ /* 2 or 4 bit hole */
#ifdef CONFIG_NET_SCHED
__u16 tc_index; /* traffic control index */
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c
@@ -172,6 +172,18 @@ u32 eth_get_headlen(void *data, unsigned
}
EXPORT_SYMBOL(eth_get_headlen);
+static inline bool
+eth_check_local_mask(const void *addr1, const void *addr2, const void *mask)
+{
+ const u16 *a1 = addr1;
+ const u16 *a2 = addr2;
+ const u16 *m = mask;
+
+ return (((a1[0] ^ a2[0]) & ~m[0]) |
+ ((a1[1] ^ a2[1]) & ~m[1]) |
+ ((a1[2] ^ a2[2]) & ~m[2]));
+}
+
/**
* eth_type_trans - determine the packet's protocol ID.
* @skb: received socket data
@@ -199,8 +211,12 @@ __be16 eth_type_trans(struct sk_buff *sk
skb->pkt_type = PACKET_MULTICAST;
}
else if (unlikely(!ether_addr_equal_64bits(eth->h_dest,
- dev->dev_addr)))
+ dev->dev_addr))) {
skb->pkt_type = PACKET_OTHERHOST;
+ if (eth_check_local_mask(eth->h_dest, dev->dev_addr,
+ dev->local_addr_mask))
+ skb->gro_skip = 1;
+ }
/*
* Some variants of DSA tagging don't have an ethertype field

26
target/linux/generic/patches-4.0/680-net-skip-gro-for-otherhost-packets.patch
View file

@ -1,26 +0,0 @@
Subject: NET: skip GRO for otherhost packets
For network drivers using napi_gro_receive, packets are run through GRO,
even when the destination MAC address does not match, and they're supposed
to be delivered to another host behind a different bridge port.
This can be very expensive, because for drivers without TSO or scatter-
gather, this can only be undone by copying the skb and checksumming it
again.
Fix this by leaving skbs with PACKET_OTHERHOST untouched.
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -4005,6 +4005,9 @@ static enum gro_result dev_gro_receive(s
enum gro_result ret;
int grow;
+ if (skb->pkt_type == PACKET_OTHERHOST)
+ goto normal;
+
if (!(skb->dev->features & NETIF_F_GRO))
goto normal;

10
target/linux/generic/patches-4.0/721-phy_packets.patch
View file

@ -28,7 +28,7 @@
const struct header_ops *header_ops;
unsigned int flags;
@@ -1619,6 +1626,10 @@ struct net_device {
@@ -1621,6 +1628,10 @@ struct net_device {
struct wireless_dev *ieee80211_ptr;
struct wpan_dev *ieee802154_ptr;
@ -41,7 +41,7 @@
*/
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -2049,6 +2049,10 @@ static inline int pskb_trim(struct sk_bu
@@ -2050,6 +2050,10 @@ static inline int pskb_trim(struct sk_bu
return (len < skb->len) ? __pskb_trim(skb, len) : 0;
}
@ -52,7 +52,7 @@
/**
* pskb_trim_unique - remove end from a paged unique (not cloned) buffer
* @skb: buffer to alter
@@ -2175,16 +2179,6 @@ static inline struct sk_buff *dev_alloc_
@@ -2176,16 +2180,6 @@ static inline struct sk_buff *dev_alloc_
}
@ -121,7 +121,7 @@
#include <net/protocol.h>
#include <net/dst.h>
@@ -550,6 +551,22 @@ struct sk_buff *__napi_alloc_skb(struct
@@ -550,6 +551,22 @@ struct sk_buff *__napi_alloc_skb(struct
}
EXPORT_SYMBOL(__napi_alloc_skb);
@ -146,7 +146,7 @@
{
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c
@@ -188,6 +188,12 @@ __be16 eth_type_trans(struct sk_buff *sk
@@ -200,6 +200,12 @@ __be16 eth_type_trans(struct sk_buff *sk
const struct ethhdr *eth;
skb->dev = dev;