+From f5cda6cb8da57f20cb58e5d8e8bf41b9e155c06c Mon Sep 17 00:00:00 2001
+From: S.Çağlar Onur <caglar@cs.princeton.edu>
+Date: Tue, 7 Dec 2010 11:07:40 -0500
+Subject: [PATCH] linux-2.6-525-sknid-elevator.patch
+
+---
+ include/linux/netdevice.h | 1 +
+ net/core/dev.c | 30 +++++++++++++++++++
+ net/packet/af_packet.c | 71 +++++++++++++++++++++++++++++++++++++++++++-
+ 3 files changed, 100 insertions(+), 2 deletions(-)
+
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
-index 4267c8b..3f36a91 100644
+index 17b0c3c..186d772 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
-@@ -1057,6 +1057,7 @@ struct napi_gro_cb {
+@@ -1099,6 +1099,7 @@ struct napi_gro_cb {
struct packet_type {
__be16 type; /* This is really htons(ether_type). */
struct net_device *dev; /* NULL is wildcarded here */
struct net_device *,
struct packet_type *,
diff --git a/net/core/dev.c b/net/core/dev.c
-index 8b6b941..651a1c3 100644
+index 32a2b7e..7fda319 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -99,6 +99,8 @@
#include <linux/if_bridge.h>
#include <linux/if_macvlan.h>
#include <net/dst.h>
-@@ -2275,6 +2277,10 @@ void netif_nit_deliver(struct sk_buff *skb)
+@@ -2333,6 +2335,10 @@ void netif_nit_deliver(struct sk_buff *skb)
rcu_read_unlock();
}
/**
* netif_receive_skb - process receive buffer from network
* @skb: buffer to process
-@@ -2296,8 +2302,11 @@ int netif_receive_skb(struct sk_buff *skb)
- struct net_device *orig_dev;
+@@ -2355,8 +2361,11 @@ int netif_receive_skb(struct sk_buff *skb)
struct net_device *null_or_orig;
+ struct net_device *null_or_bond;
int ret = NET_RX_DROP;
+ int *cur_elevator = &__get_cpu_var(sknid_elevator);
__be16 type;
if (!skb->tstamp.tv64)
net_timestamp(skb);
-@@ -2373,7 +2382,27 @@ ncls:
+@@ -2456,7 +2465,27 @@ ncls:
}
if (pt_prev) {
} else {
kfree_skb(skb);
/* Jamal, now you will not able to escape explaining
-@@ -4127,6 +4156,7 @@ unsigned dev_get_flags(const struct net_device *dev)
+@@ -4210,6 +4239,7 @@ unsigned dev_get_flags(const struct net_device *dev)
return flags;
}
EXPORT_SYMBOL(dev_get_flags);
/**
* dev_change_flags - change device settings
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
-index 1bd109e..5c2e9ad 100644
+index b4bf950..cbf8d22 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -78,6 +78,7 @@
#include <linux/init.h>
+#include <linux/vs_network.h>
#include <linux/mutex.h>
+ #include <linux/if_vlan.h>
- #ifdef CONFIG_INET
-@@ -337,12 +338,54 @@ static const struct proto_ops packet_ops;
+@@ -338,12 +339,54 @@ static const struct proto_ops packet_ops;
static const struct proto_ops packet_ops_spkt;
-+extern DEFINE_PER_CPU(int, sknid_elevator);
++DECLARE_PER_CPU(int, sknid_elevator);
+
+static inline unsigned int slice_check_and_elevate(struct sk_buff *skb, struct sock *sk) {
+ /* This mechanism is quite involved, and caused us a lot of pain
struct sock *sk;
struct sockaddr_pkt *spkt;
-
-+ int tag = skb->skb_tag;
++
+
/*
* When we registered the protocol we saved the socket in the data
* field for just this event.
-@@ -361,6 +404,16 @@ static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev,
+@@ -362,6 +405,16 @@ static int packet_rcv_spkt(struct sk_buff *skb, struct net_device *dev,
* so that this procedure is noop.
*/
if (skb->pkt_type == PACKET_LOOPBACK)
goto out;
-@@ -419,6 +472,9 @@ static int packet_sendmsg_spkt(struct kiocb *iocb, struct socket *sock,
+@@ -420,6 +473,9 @@ static int packet_sendmsg_spkt(struct kiocb *iocb, struct socket *sock,
__be16 proto = 0;
int err;
/*
* Get and verify the address.
*/
-@@ -509,11 +565,16 @@ out_unlock:
+@@ -510,11 +566,16 @@ out_unlock:
return err;
}
rcu_read_lock_bh();
filter = rcu_dereference(sk->sk_filter);
if (filter != NULL)
-@@ -1063,6 +1124,9 @@ static int packet_snd(struct socket *sock,
+@@ -1073,6 +1134,9 @@ static int packet_snd(struct socket *sock,
unsigned char *addr;
int ifindex, err, reserve = 0;
/*
* Get and verify the address.
*/
-@@ -1248,6 +1312,7 @@ static int packet_do_bind(struct sock *sk, struct net_device *dev, __be16 protoc
+@@ -1258,6 +1322,7 @@ static int packet_do_bind(struct sock *sk, struct net_device *dev, __be16 protoc
po->num = protocol;
po->prot_hook.type = protocol;
po->prot_hook.dev = dev;
po->ifindex = dev ? dev->ifindex : 0;
-@@ -1348,8 +1413,9 @@ static int packet_create(struct net *net, struct socket *sock, int protocol,
+@@ -1358,8 +1423,9 @@ static int packet_create(struct net *net, struct socket *sock, int protocol,
__be16 proto = (__force __be16)protocol; /* weird, but documented */
int err;
if (sock->type != SOCK_DGRAM && sock->type != SOCK_RAW &&
sock->type != SOCK_PACKET)
return -ESOCKTNOSUPPORT;
-@@ -1381,6 +1447,7 @@ static int packet_create(struct net *net, struct socket *sock, int protocol,
+@@ -1391,6 +1457,7 @@ static int packet_create(struct net *net, struct socket *sock, int protocol,
spin_lock_init(&po->bind_lock);
mutex_init(&po->pg_vec_lock);
po->prot_hook.func = packet_rcv;
if (sock->type == SOCK_PACKET)
po->prot_hook.func = packet_rcv_spkt;
+--
+1.5.4.3
+