From aefbd2b3c2a9c657605e4337f9919d6c6273e8e6 Mon Sep 17 00:00:00 2001
From: Pravin B Shelar <pshelar@nicira.com>
Date: Thu, 7 Mar 2013 13:21:46 +0000
Subject: tunneling: Capture inner mac header during encapsulation.

This patch adds inner mac header. This will be used in next patch
to find tunner header length. Header len is required to copy tunnel
header to each gso segment.
This patch does not change any functionality.

Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/linux/skbuff.h | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

(limited to 'include/linux/skbuff.h')

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 821c7f45d2a7..d7f96ff68f77 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -387,6 +387,7 @@ typedef unsigned char *sk_buff_data_t;
  *	@vlan_tci: vlan tag control information
  *	@inner_transport_header: Inner transport layer header (encapsulation)
  *	@inner_network_header: Network layer header (encapsulation)
+ *	@inner_mac_header: Link layer header (encapsulation)
  *	@transport_header: Transport layer header
  *	@network_header: Network layer header
  *	@mac_header: Link layer header
@@ -505,6 +506,7 @@ struct sk_buff {
 
 	sk_buff_data_t		inner_transport_header;
 	sk_buff_data_t		inner_network_header;
+	sk_buff_data_t		inner_mac_header;
 	sk_buff_data_t		transport_header;
 	sk_buff_data_t		network_header;
 	sk_buff_data_t		mac_header;
@@ -1466,6 +1468,7 @@ static inline void skb_reserve(struct sk_buff *skb, int len)
 
 static inline void skb_reset_inner_headers(struct sk_buff *skb)
 {
+	skb->inner_mac_header = skb->mac_header;
 	skb->inner_network_header = skb->network_header;
 	skb->inner_transport_header = skb->transport_header;
 }
@@ -1511,6 +1514,22 @@ static inline void skb_set_inner_network_header(struct sk_buff *skb,
 	skb->inner_network_header += offset;
 }
 
+static inline unsigned char *skb_inner_mac_header(const struct sk_buff *skb)
+{
+	return skb->head + skb->inner_mac_header;
+}
+
+static inline void skb_reset_inner_mac_header(struct sk_buff *skb)
+{
+	skb->inner_mac_header = skb->data - skb->head;
+}
+
+static inline void skb_set_inner_mac_header(struct sk_buff *skb,
+					    const int offset)
+{
+	skb_reset_inner_mac_header(skb);
+	skb->inner_mac_header += offset;
+}
 static inline bool skb_transport_header_was_set(const struct sk_buff *skb)
 {
 	return skb->transport_header != ~0U;
@@ -1604,6 +1623,21 @@ static inline void skb_set_inner_network_header(struct sk_buff *skb,
 	skb->inner_network_header = skb->data + offset;
 }
 
+static inline unsigned char *skb_inner_mac_header(const struct sk_buff *skb)
+{
+	return skb->inner_mac_header;
+}
+
+static inline void skb_reset_inner_mac_header(struct sk_buff *skb)
+{
+	skb->inner_mac_header = skb->data;
+}
+
+static inline void skb_set_inner_mac_header(struct sk_buff *skb,
+						const int offset)
+{
+	skb->inner_mac_header = skb->data + offset;
+}
 static inline bool skb_transport_header_was_set(const struct sk_buff *skb)
 {
 	return skb->transport_header != NULL;
-- 
cgit v1.2.3


From 731362674580cb0c696cd1b1a03d8461a10cf90a Mon Sep 17 00:00:00 2001
From: Pravin B Shelar <pshelar@nicira.com>
Date: Thu, 7 Mar 2013 13:21:51 +0000
Subject: tunneling: Add generic Tunnel segmentation.

Adds generic tunneling offloading support for IPv4-UDP based
tunnels.
GSO type is added to request this offload for a skb.
netdev feature NETIF_F_UDP_TUNNEL is added for hardware offloaded
udp-tunnel support. Currently no device supports this feature,
software offload is used.

This can be used by tunneling protocols like VXLAN.

CC: Jesse Gross <jesse@nicira.com>
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/linux/netdev_features.h |   7 +--
 include/linux/skbuff.h          |   2 +
 net/core/ethtool.c              |   1 +
 net/ipv4/af_inet.c              |   6 ++-
 net/ipv4/tcp.c                  |   1 +
 net/ipv4/udp.c                  | 115 +++++++++++++++++++++++++++++++---------
 net/ipv6/ip6_offload.c          |   1 +
 net/ipv6/udp_offload.c          |   8 ++-
 8 files changed, 111 insertions(+), 30 deletions(-)

(limited to 'include/linux/skbuff.h')

diff --git a/include/linux/netdev_features.h b/include/linux/netdev_features.h
index 3dd39340430e..f5e797c0c2a4 100644
--- a/include/linux/netdev_features.h
+++ b/include/linux/netdev_features.h
@@ -42,9 +42,9 @@ enum {
 	NETIF_F_TSO6_BIT,		/* ... TCPv6 segmentation */
 	NETIF_F_FSO_BIT,		/* ... FCoE segmentation */
 	NETIF_F_GSO_GRE_BIT,		/* ... GRE with TSO */
-	/**/NETIF_F_GSO_LAST,		/* [can't be last bit, see GSO_MASK] */
-	NETIF_F_GSO_RESERVED2		/* ... free (fill GSO_MASK to 8 bits) */
-		= NETIF_F_GSO_LAST,
+	NETIF_F_GSO_UDP_TUNNEL_BIT,	/* ... UDP TUNNEL with TSO */
+	/**/NETIF_F_GSO_LAST =		/* last bit, see GSO_MASK */
+		NETIF_F_GSO_UDP_TUNNEL_BIT,
 
 	NETIF_F_FCOE_CRC_BIT,		/* FCoE CRC32 */
 	NETIF_F_SCTP_CSUM_BIT,		/* SCTP checksum offload */
@@ -103,6 +103,7 @@ enum {
 #define NETIF_F_RXFCS		__NETIF_F(RXFCS)
 #define NETIF_F_RXALL		__NETIF_F(RXALL)
 #define NETIF_F_GRE_GSO		__NETIF_F(GSO_GRE)
+#define NETIF_F_UDP_TUNNEL	__NETIF_F(UDP_TUNNEL)
 
 /* Features valid for ethtool to change */
 /* = all defined minus driver/device-class-related */
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index d7f96ff68f77..eb2106fe3bb4 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -316,6 +316,8 @@ enum {
 	SKB_GSO_FCOE = 1 << 5,
 
 	SKB_GSO_GRE = 1 << 6,
+
+	SKB_GSO_UDP_TUNNEL = 1 << 7,
 };
 
 #if BITS_PER_LONG > 32
diff --git a/net/core/ethtool.c b/net/core/ethtool.c
index 3e9b2c3e30f0..adc1351e6873 100644
--- a/net/core/ethtool.c
+++ b/net/core/ethtool.c
@@ -78,6 +78,7 @@ static const char netdev_features_strings[NETDEV_FEATURE_COUNT][ETH_GSTRING_LEN]
 	[NETIF_F_TSO6_BIT] =             "tx-tcp6-segmentation",
 	[NETIF_F_FSO_BIT] =              "tx-fcoe-segmentation",
 	[NETIF_F_GSO_GRE_BIT] =		 "tx-gre-segmentation",
+	[NETIF_F_GSO_UDP_TUNNEL_BIT] =	 "tx-udp_tnl-segmentation",
 
 	[NETIF_F_FCOE_CRC_BIT] =         "tx-checksum-fcoe-crc",
 	[NETIF_F_SCTP_CSUM_BIT] =        "tx-checksum-sctp",
diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index dc3f677360a5..9e5882caf8a7 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1283,6 +1283,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
 	int ihl;
 	int id;
 	unsigned int offset = 0;
+	bool tunnel;
 
 	if (unlikely(skb_shinfo(skb)->gso_type &
 		     ~(SKB_GSO_TCPV4 |
@@ -1290,6 +1291,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
 		       SKB_GSO_DODGY |
 		       SKB_GSO_TCP_ECN |
 		       SKB_GSO_GRE |
+		       SKB_GSO_UDP_TUNNEL |
 		       0)))
 		goto out;
 
@@ -1304,6 +1306,8 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
 	if (unlikely(!pskb_may_pull(skb, ihl)))
 		goto out;
 
+	tunnel = !!skb->encapsulation;
+
 	__skb_pull(skb, ihl);
 	skb_reset_transport_header(skb);
 	iph = ip_hdr(skb);
@@ -1323,7 +1327,7 @@ static struct sk_buff *inet_gso_segment(struct sk_buff *skb,
 	skb = segs;
 	do {
 		iph = ip_hdr(skb);
-		if (proto == IPPROTO_UDP) {
+		if (!tunnel && proto == IPPROTO_UDP) {
 			iph->id = htons(id);
 			iph->frag_off = htons(offset >> 3);
 			if (skb->next != NULL)
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 47e854fcae24..8d14573ade77 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -3044,6 +3044,7 @@ struct sk_buff *tcp_tso_segment(struct sk_buff *skb,
 			       SKB_GSO_TCP_ECN |
 			       SKB_GSO_TCPV6 |
 			       SKB_GSO_GRE |
+			       SKB_GSO_UDP_TUNNEL |
 			       0) ||
 			     !(type & (SKB_GSO_TCPV4 | SKB_GSO_TCPV6))))
 			goto out;
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 265c42cf963c..41760e043bf5 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -2272,31 +2272,88 @@ void __init udp_init(void)
 
 int udp4_ufo_send_check(struct sk_buff *skb)
 {
-	const struct iphdr *iph;
-	struct udphdr *uh;
-
-	if (!pskb_may_pull(skb, sizeof(*uh)))
+	if (!pskb_may_pull(skb, sizeof(struct udphdr)))
 		return -EINVAL;
 
-	iph = ip_hdr(skb);
-	uh = udp_hdr(skb);
+	if (likely(!skb->encapsulation)) {
+		const struct iphdr *iph;
+		struct udphdr *uh;
 
-	uh->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, skb->len,
-				       IPPROTO_UDP, 0);
-	skb->csum_start = skb_transport_header(skb) - skb->head;
-	skb->csum_offset = offsetof(struct udphdr, check);
-	skb->ip_summed = CHECKSUM_PARTIAL;
+		iph = ip_hdr(skb);
+		uh = udp_hdr(skb);
+
+		uh->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, skb->len,
+				IPPROTO_UDP, 0);
+		skb->csum_start = skb_transport_header(skb) - skb->head;
+		skb->csum_offset = offsetof(struct udphdr, check);
+		skb->ip_summed = CHECKSUM_PARTIAL;
+	}
 	return 0;
 }
 
+static struct sk_buff *skb_udp_tunnel_segment(struct sk_buff *skb,
+		netdev_features_t features)
+{
+	struct sk_buff *segs = ERR_PTR(-EINVAL);
+	int mac_len = skb->mac_len;
+	int tnl_hlen = skb_inner_mac_header(skb) - skb_transport_header(skb);
+	int outer_hlen;
+	netdev_features_t enc_features;
+
+	if (unlikely(!pskb_may_pull(skb, tnl_hlen)))
+		goto out;
+
+	skb->encapsulation = 0;
+	__skb_pull(skb, tnl_hlen);
+	skb_reset_mac_header(skb);
+	skb_set_network_header(skb, skb_inner_network_offset(skb));
+	skb->mac_len = skb_inner_network_offset(skb);
+
+	/* segment inner packet. */
+	enc_features = skb->dev->hw_enc_features & netif_skb_features(skb);
+	segs = skb_mac_gso_segment(skb, enc_features);
+	if (!segs || IS_ERR(segs))
+		goto out;
+
+	outer_hlen = skb_tnl_header_len(skb);
+	skb = segs;
+	do {
+		struct udphdr *uh;
+		int udp_offset = outer_hlen - tnl_hlen;
+
+		skb->mac_len = mac_len;
+
+		skb_push(skb, outer_hlen);
+		skb_reset_mac_header(skb);
+		skb_set_network_header(skb, mac_len);
+		skb_set_transport_header(skb, udp_offset);
+		uh = udp_hdr(skb);
+		uh->len = htons(skb->len - udp_offset);
+
+		/* csum segment if tunnel sets skb with csum. */
+		if (unlikely(uh->check)) {
+			struct iphdr *iph = ip_hdr(skb);
+
+			uh->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr,
+						       skb->len - udp_offset,
+						       IPPROTO_UDP, 0);
+			uh->check = csum_fold(skb_checksum(skb, udp_offset,
+							   skb->len - udp_offset, 0));
+			if (uh->check == 0)
+				uh->check = CSUM_MANGLED_0;
+
+		}
+		skb->ip_summed = CHECKSUM_NONE;
+	} while ((skb = skb->next));
+out:
+	return segs;
+}
+
 struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb,
 	netdev_features_t features)
 {
 	struct sk_buff *segs = ERR_PTR(-EINVAL);
 	unsigned int mss;
-	int offset;
-	__wsum csum;
-
 	mss = skb_shinfo(skb)->gso_size;
 	if (unlikely(skb->len <= mss))
 		goto out;
@@ -2306,6 +2363,7 @@ struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb,
 		int type = skb_shinfo(skb)->gso_type;
 
 		if (unlikely(type & ~(SKB_GSO_UDP | SKB_GSO_DODGY |
+				      SKB_GSO_UDP_TUNNEL |
 				      SKB_GSO_GRE) ||
 			     !(type & (SKB_GSO_UDP))))
 			goto out;
@@ -2316,20 +2374,27 @@ struct sk_buff *udp4_ufo_fragment(struct sk_buff *skb,
 		goto out;
 	}
 
-	/* Do software UFO. Complete and fill in the UDP checksum as HW cannot
-	 * do checksum of UDP packets sent as multiple IP fragments.
-	 */
-	offset = skb_checksum_start_offset(skb);
-	csum = skb_checksum(skb, offset, skb->len - offset, 0);
-	offset += skb->csum_offset;
-	*(__sum16 *)(skb->data + offset) = csum_fold(csum);
-	skb->ip_summed = CHECKSUM_NONE;
-
 	/* Fragment the skb. IP headers of the fragments are updated in
 	 * inet_gso_segment()
 	 */
-	segs = skb_segment(skb, features);
+	if (skb->encapsulation && skb_shinfo(skb)->gso_type & SKB_GSO_UDP_TUNNEL)
+		segs = skb_udp_tunnel_segment(skb, features);
+	else {
+		int offset;
+		__wsum csum;
+
+		/* Do software UFO. Complete and fill in the UDP checksum as
+		 * HW cannot do checksum of UDP packets sent as multiple
+		 * IP fragments.
+		 */
+		offset = skb_checksum_start_offset(skb);
+		csum = skb_checksum(skb, offset, skb->len - offset, 0);
+		offset += skb->csum_offset;
+		*(__sum16 *)(skb->data + offset) = csum_fold(csum);
+		skb->ip_summed = CHECKSUM_NONE;
+
+		segs = skb_segment(skb, features);
+	}
 out:
 	return segs;
 }
-
diff --git a/net/ipv6/ip6_offload.c b/net/ipv6/ip6_offload.c
index 7a0d25a5479c..71b766ee821d 100644
--- a/net/ipv6/ip6_offload.c
+++ b/net/ipv6/ip6_offload.c
@@ -97,6 +97,7 @@ static struct sk_buff *ipv6_gso_segment(struct sk_buff *skb,
 		       SKB_GSO_DODGY |
 		       SKB_GSO_TCP_ECN |
 		       SKB_GSO_GRE |
+		       SKB_GSO_UDP_TUNNEL |
 		       SKB_GSO_TCPV6 |
 		       0)))
 		goto out;
diff --git a/net/ipv6/udp_offload.c b/net/ipv6/udp_offload.c
index cf05cf073c51..3bb3a891a424 100644
--- a/net/ipv6/udp_offload.c
+++ b/net/ipv6/udp_offload.c
@@ -21,6 +21,10 @@ static int udp6_ufo_send_check(struct sk_buff *skb)
 	const struct ipv6hdr *ipv6h;
 	struct udphdr *uh;
 
+	/* UDP Tunnel offload on ipv6 is not yet supported. */
+	if (skb->encapsulation)
+		return -EINVAL;
+
 	if (!pskb_may_pull(skb, sizeof(*uh)))
 		return -EINVAL;
 
@@ -56,7 +60,9 @@ static struct sk_buff *udp6_ufo_fragment(struct sk_buff *skb,
 		/* Packet is from an untrusted source, reset gso_segs. */
 		int type = skb_shinfo(skb)->gso_type;
 
-		if (unlikely(type & ~(SKB_GSO_UDP | SKB_GSO_DODGY |
+		if (unlikely(type & ~(SKB_GSO_UDP |
+				      SKB_GSO_DODGY |
+				      SKB_GSO_UDP_TUNNEL |
 				      SKB_GSO_GRE) ||
 			     !(type & (SKB_GSO_UDP))))
 			goto out;
-- 
cgit v1.2.3


From f77668dc25b27270fe589031b22c432c3462b1d8 Mon Sep 17 00:00:00 2001
From: Daniel Borkmann <dborkman@redhat.com>
Date: Tue, 19 Mar 2013 06:39:30 +0000
Subject: net: flow_dissector: add __skb_get_poff to get a start offset to
 payload

__skb_get_poff() returns the offset to the payload as far as it could
be dissected. The main user is currently BPF, so that we can dynamically
truncate packets without needing to push actual payload to the user
space and instead can analyze headers only.

Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/linux/skbuff.h    |  2 ++
 net/core/flow_dissector.c | 57 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 59 insertions(+)

(limited to 'include/linux/skbuff.h')

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index b66ecc6ef102..497412165b1c 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -2840,6 +2840,8 @@ static inline void skb_checksum_none_assert(const struct sk_buff *skb)
 
 bool skb_partial_csum_set(struct sk_buff *skb, u16 start, u16 off);
 
+u32 __skb_get_poff(const struct sk_buff *skb);
+
 /**
  * skb_head_is_locked - Determine if the skb->head is locked down
  * @skb: skb to check
diff --git a/net/core/flow_dissector.c b/net/core/flow_dissector.c
index f4be293bab9e..00ee068efc1c 100644
--- a/net/core/flow_dissector.c
+++ b/net/core/flow_dissector.c
@@ -5,6 +5,10 @@
 #include <linux/if_vlan.h>
 #include <net/ip.h>
 #include <net/ipv6.h>
+#include <linux/igmp.h>
+#include <linux/icmp.h>
+#include <linux/sctp.h>
+#include <linux/dccp.h>
 #include <linux/if_tunnel.h>
 #include <linux/if_pppox.h>
 #include <linux/ppp_defs.h>
@@ -228,6 +232,59 @@ u16 __skb_tx_hash(const struct net_device *dev, const struct sk_buff *skb,
 }
 EXPORT_SYMBOL(__skb_tx_hash);
 
+/* __skb_get_poff() returns the offset to the payload as far as it could
+ * be dissected. The main user is currently BPF, so that we can dynamically
+ * truncate packets without needing to push actual payload to the user
+ * space and can analyze headers only, instead.
+ */
+u32 __skb_get_poff(const struct sk_buff *skb)
+{
+	struct flow_keys keys;
+	u32 poff = 0;
+
+	if (!skb_flow_dissect(skb, &keys))
+		return 0;
+
+	poff += keys.thoff;
+	switch (keys.ip_proto) {
+	case IPPROTO_TCP: {
+		const struct tcphdr *tcph;
+		struct tcphdr _tcph;
+
+		tcph = skb_header_pointer(skb, poff, sizeof(_tcph), &_tcph);
+		if (!tcph)
+			return poff;
+
+		poff += max_t(u32, sizeof(struct tcphdr), tcph->doff * 4);
+		break;
+	}
+	case IPPROTO_UDP:
+	case IPPROTO_UDPLITE:
+		poff += sizeof(struct udphdr);
+		break;
+	/* For the rest, we do not really care about header
+	 * extensions at this point for now.
+	 */
+	case IPPROTO_ICMP:
+		poff += sizeof(struct icmphdr);
+		break;
+	case IPPROTO_ICMPV6:
+		poff += sizeof(struct icmp6hdr);
+		break;
+	case IPPROTO_IGMP:
+		poff += sizeof(struct igmphdr);
+		break;
+	case IPPROTO_DCCP:
+		poff += sizeof(struct dccp_hdr);
+		break;
+	case IPPROTO_SCTP:
+		poff += sizeof(struct sctphdr);
+		break;
+	}
+
+	return poff;
+}
+
 static inline u16 dev_cap_txqueue(struct net_device *dev, u16 queue_index)
 {
 	if (unlikely(queue_index >= dev->real_num_tx_queues)) {
-- 
cgit v1.2.3


From 5203cd28db6dc05c3618a602cf4cf81203d00257 Mon Sep 17 00:00:00 2001
From: Jason Wang <jasowang@redhat.com>
Date: Tue, 26 Mar 2013 23:11:21 +0000
Subject: net: core: introduce skb_probe_transport_header()

Sometimes, we need probe and set the transport header for packets (e.g from
untrusted source). This patch introduces a new helper
skb_probe_transport_header() which tries to probe and set the l4 header through
skb_flow_dissect(), if not just set the transport header to the hint passed by
caller.

Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/linux/skbuff.h | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

(limited to 'include/linux/skbuff.h')

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 497412165b1c..fa88b966cb8e 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -32,6 +32,7 @@
 #include <linux/hrtimer.h>
 #include <linux/dma-mapping.h>
 #include <linux/netdev_features.h>
+#include <net/flow_keys.h>
 
 /* Don't change this without changing skb_csum_unnecessary! */
 #define CHECKSUM_NONE 0
@@ -1559,6 +1560,19 @@ static inline void skb_set_transport_header(struct sk_buff *skb,
 	skb->transport_header += offset;
 }
 
+static inline void skb_probe_transport_header(struct sk_buff *skb,
+					      const int offset_hint)
+{
+	struct flow_keys keys;
+
+	if (skb_transport_header_was_set(skb))
+		return;
+	else if (skb_flow_dissect(skb, &keys))
+		skb_set_transport_header(skb, keys.thoff);
+	else
+		skb_set_transport_header(skb, offset_hint);
+}
+
 static inline unsigned char *skb_network_header(const struct sk_buff *skb)
 {
 	return skb->head + skb->network_header;
-- 
cgit v1.2.3


From fbbdb8f096e0e5d8244e1ffa46e364146ab9a440 Mon Sep 17 00:00:00 2001
From: Ying Xue <ying.xue@windriver.com>
Date: Wed, 27 Mar 2013 16:46:06 +0000
Subject: net: fix compile error of implicit declaration of
 skb_probe_transport_header
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

The commit 40893fd(net: switch to use skb_probe_transport_header())
involes a new error accidently. When NET_SKBUFF_DATA_USES_OFFSE is
not enabled, below compile error happens:

  CC      net/packet/af_packet.o
  net/packet/af_packet.c: In function ‘packet_sendmsg_spkt’:
  net/packet/af_packet.c:1516:2: error: implicit declaration of function ‘skb_probe_transport_header’ [-Werror=implicit-function-declaration]
  cc1: some warnings being treated as errors
  make[2]: *** [net/packet/af_packet.o] Error 1
  make[1]: *** [net/packet] Error 2
  make: *** [net] Error 2

As it seems skb_probe_transport_header() is not related to
NET_SKBUFF_DATA_USES_OFFSE, we should move the definition of
skb_probe_transport_header() out of scope of
NET_SKBUFF_DATA_USES_OFFSE macro.

Cc: Jason Wang <jasowang@redhat.com>
Cc: Eric Dumazet <edumazet@google.com>
Signed-off-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/linux/skbuff.h | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

(limited to 'include/linux/skbuff.h')

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index fa88b966cb8e..878e0ee81068 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -1560,19 +1560,6 @@ static inline void skb_set_transport_header(struct sk_buff *skb,
 	skb->transport_header += offset;
 }
 
-static inline void skb_probe_transport_header(struct sk_buff *skb,
-					      const int offset_hint)
-{
-	struct flow_keys keys;
-
-	if (skb_transport_header_was_set(skb))
-		return;
-	else if (skb_flow_dissect(skb, &keys))
-		skb_set_transport_header(skb, keys.thoff);
-	else
-		skb_set_transport_header(skb, offset_hint);
-}
-
 static inline unsigned char *skb_network_header(const struct sk_buff *skb)
 {
 	return skb->head + skb->network_header;
@@ -1716,6 +1703,19 @@ static inline void skb_set_mac_header(struct sk_buff *skb, const int offset)
 }
 #endif /* NET_SKBUFF_DATA_USES_OFFSET */
 
+static inline void skb_probe_transport_header(struct sk_buff *skb,
+					      const int offset_hint)
+{
+	struct flow_keys keys;
+
+	if (skb_transport_header_was_set(skb))
+		return;
+	else if (skb_flow_dissect(skb, &keys))
+		skb_set_transport_header(skb, keys.thoff);
+	else
+		skb_set_transport_header(skb, offset_hint);
+}
+
 static inline void skb_mac_header_rebuild(struct sk_buff *skb)
 {
 	if (skb_mac_header_was_set(skb)) {
-- 
cgit v1.2.3


From 932bc4d7a53ba418de67fdab533248df5b36c752 Mon Sep 17 00:00:00 2001
From: Julian Anastasov <ja@ssi.bg>
Date: Thu, 21 Mar 2013 11:57:58 +0200
Subject: net: add skb_dst_set_noref_force

Rename skb_dst_set_noref to __skb_dst_set_noref and
add force flag as suggested by David Miller. The new wrapper
skb_dst_set_noref_force will force dst entries that are not
cached to be attached as skb dst without taking reference
as long as provided dst is reclaimed after RCU grace period.

Signed-off-by: Julian Anastasov <ja@ssi.bg>
Signed-off by: Hans Schillstrom <hans@schillstrom.com>
Acked-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Simon Horman <horms@verge.net.au>
---
 include/linux/skbuff.h | 35 ++++++++++++++++++++++++++++++++++-
 net/core/dst.c         |  9 +++++----
 2 files changed, 39 insertions(+), 5 deletions(-)

(limited to 'include/linux/skbuff.h')

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index 878e0ee81068..364e2440a7ee 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -575,7 +575,40 @@ static inline void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst)
 	skb->_skb_refdst = (unsigned long)dst;
 }
 
-extern void skb_dst_set_noref(struct sk_buff *skb, struct dst_entry *dst);
+extern void __skb_dst_set_noref(struct sk_buff *skb, struct dst_entry *dst,
+				bool force);
+
+/**
+ * skb_dst_set_noref - sets skb dst, hopefully, without taking reference
+ * @skb: buffer
+ * @dst: dst entry
+ *
+ * Sets skb dst, assuming a reference was not taken on dst.
+ * If dst entry is cached, we do not take reference and dst_release
+ * will be avoided by refdst_drop. If dst entry is not cached, we take
+ * reference, so that last dst_release can destroy the dst immediately.
+ */
+static inline void skb_dst_set_noref(struct sk_buff *skb, struct dst_entry *dst)
+{
+	__skb_dst_set_noref(skb, dst, false);
+}
+
+/**
+ * skb_dst_set_noref_force - sets skb dst, without taking reference
+ * @skb: buffer
+ * @dst: dst entry
+ *
+ * Sets skb dst, assuming a reference was not taken on dst.
+ * No reference is taken and no dst_release will be called. While for
+ * cached dsts deferred reclaim is a basic feature, for entries that are
+ * not cached it is caller's job to guarantee that last dst_release for
+ * provided dst happens when nobody uses it, eg. after a RCU grace period.
+ */
+static inline void skb_dst_set_noref_force(struct sk_buff *skb,
+					   struct dst_entry *dst)
+{
+	__skb_dst_set_noref(skb, dst, true);
+}
 
 /**
  * skb_dst_is_noref - Test if skb dst isn't refcounted
diff --git a/net/core/dst.c b/net/core/dst.c
index 35fd12f1a69c..df9cc810ec8e 100644
--- a/net/core/dst.c
+++ b/net/core/dst.c
@@ -320,27 +320,28 @@ void __dst_destroy_metrics_generic(struct dst_entry *dst, unsigned long old)
 EXPORT_SYMBOL(__dst_destroy_metrics_generic);
 
 /**
- * skb_dst_set_noref - sets skb dst, without a reference
+ * __skb_dst_set_noref - sets skb dst, without a reference
  * @skb: buffer
  * @dst: dst entry
+ * @force: if force is set, use noref version even for DST_NOCACHE entries
  *
  * Sets skb dst, assuming a reference was not taken on dst
  * skb_dst_drop() should not dst_release() this dst
  */
-void skb_dst_set_noref(struct sk_buff *skb, struct dst_entry *dst)
+void __skb_dst_set_noref(struct sk_buff *skb, struct dst_entry *dst, bool force)
 {
 	WARN_ON(!rcu_read_lock_held() && !rcu_read_lock_bh_held());
 	/* If dst not in cache, we must take a reference, because
 	 * dst_release() will destroy dst as soon as its refcount becomes zero
 	 */
-	if (unlikely(dst->flags & DST_NOCACHE)) {
+	if (unlikely((dst->flags & DST_NOCACHE) && !force)) {
 		dst_hold(dst);
 		skb_dst_set(skb, dst);
 	} else {
 		skb->_skb_refdst = (unsigned long)dst | SKB_DST_NOREF;
 	}
 }
-EXPORT_SYMBOL(skb_dst_set_noref);
+EXPORT_SYMBOL(__skb_dst_set_noref);
 
 /* Dirty hack. We did it in 2.2 (in __dst_free),
  * we have _very_ good reasons not to repeat
-- 
cgit v1.2.3


From 86a9bad3ab6b6f858fd4443b48738cabbb6d094c Mon Sep 17 00:00:00 2001
From: Patrick McHardy <kaber@trash.net>
Date: Fri, 19 Apr 2013 02:04:30 +0000
Subject: net: vlan: add protocol argument to packet tagging functions

Add a protocol argument to the VLAN packet tagging functions. In case of HW
tagging, we need that protocol available in the ndo_start_xmit functions,
so it is stored in a new field in the skb. The new field fits into a hole
(on 64 bit) and doesn't increase the sks's size.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 drivers/infiniband/hw/nes/nes_hw.c                |  2 +-
 drivers/net/bonding/bond_alb.c                    |  4 +--
 drivers/net/ethernet/3com/typhoon.c               |  2 +-
 drivers/net/ethernet/adaptec/starfire.c           |  2 +-
 drivers/net/ethernet/alteon/acenic.c              |  2 +-
 drivers/net/ethernet/amd/amd8111e.c               |  2 +-
 drivers/net/ethernet/atheros/atl1c/atl1c_main.c   |  2 +-
 drivers/net/ethernet/atheros/atl1e/atl1e_main.c   |  2 +-
 drivers/net/ethernet/atheros/atlx/atl1.c          |  2 +-
 drivers/net/ethernet/atheros/atlx/atl2.c          |  2 +-
 drivers/net/ethernet/broadcom/bnx2.c              |  2 +-
 drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c   |  4 +--
 drivers/net/ethernet/broadcom/tg3.c               |  2 +-
 drivers/net/ethernet/brocade/bna/bnad.c           |  2 +-
 drivers/net/ethernet/chelsio/cxgb/sge.c           |  2 +-
 drivers/net/ethernet/chelsio/cxgb3/sge.c          |  4 +--
 drivers/net/ethernet/chelsio/cxgb4/sge.c          |  4 +--
 drivers/net/ethernet/chelsio/cxgb4vf/sge.c        |  5 ++--
 drivers/net/ethernet/cisco/enic/enic_main.c       |  2 +-
 drivers/net/ethernet/emulex/benet/be_main.c       |  6 ++---
 drivers/net/ethernet/intel/e1000/e1000_main.c     |  2 +-
 drivers/net/ethernet/intel/e1000e/netdev.c        |  2 +-
 drivers/net/ethernet/intel/igb/igb_main.c         |  2 +-
 drivers/net/ethernet/intel/igbvf/netdev.c         |  2 +-
 drivers/net/ethernet/intel/ixgb/ixgb_main.c       |  4 +--
 drivers/net/ethernet/intel/ixgbe/ixgbe_main.c     |  2 +-
 drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c |  2 +-
 drivers/net/ethernet/jme.c                        |  2 +-
 drivers/net/ethernet/marvell/sky2.c               |  2 +-
 drivers/net/ethernet/mellanox/mlx4/en_rx.c        |  4 +--
 drivers/net/ethernet/myricom/myri10ge/myri10ge.c  |  2 +-
 drivers/net/ethernet/natsemi/ns83820.c            |  2 +-
 drivers/net/ethernet/neterion/s2io.c              |  2 +-
 drivers/net/ethernet/neterion/vxge/vxge-main.c    |  2 +-
 drivers/net/ethernet/nvidia/forcedeth.c           |  2 +-
 drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c    |  8 +++---
 drivers/net/ethernet/qlogic/qlge/qlge_main.c      |  8 +++---
 drivers/net/ethernet/realtek/8139cp.c             |  2 +-
 drivers/net/ethernet/realtek/r8169.c              |  2 +-
 drivers/net/ethernet/tehuti/tehuti.c              |  2 +-
 drivers/net/ethernet/via/via-rhine.c              |  2 +-
 drivers/net/ethernet/via/via-velocity.c           |  2 +-
 drivers/net/usb/cdc_mbim.c                        |  2 +-
 drivers/net/vmxnet3/vmxnet3_drv.c                 |  2 +-
 include/linux/if_vlan.h                           | 33 ++++++++++++++++-------
 include/linux/skbuff.h                            |  2 ++
 net/8021q/vlan_core.c                             |  8 +++---
 net/8021q/vlan_dev.c                              |  2 +-
 net/batman-adv/bridge_loop_avoidance.c            |  2 +-
 net/bridge/br_netfilter.c                         |  2 +-
 net/bridge/br_vlan.c                              |  4 +--
 net/core/dev.c                                    |  5 ++--
 net/core/netpoll.c                                |  5 ++--
 net/core/skbuff.c                                 |  1 +
 net/openvswitch/actions.c                         |  6 ++---
 net/openvswitch/datapath.c                        |  2 +-
 56 files changed, 107 insertions(+), 84 deletions(-)

(limited to 'include/linux/skbuff.h')

diff --git a/drivers/infiniband/hw/nes/nes_hw.c b/drivers/infiniband/hw/nes/nes_hw.c
index 67647e264611..418004c93feb 100644
--- a/drivers/infiniband/hw/nes/nes_hw.c
+++ b/drivers/infiniband/hw/nes/nes_hw.c
@@ -2948,7 +2948,7 @@ void nes_nic_ce_handler(struct nes_device *nesdev, struct nes_hw_nic_cq *cq)
 					nes_debug(NES_DBG_CQ, "%s: Reporting stripped VLAN packet. Tag = 0x%04X\n",
 							nesvnic->netdev->name, vlan_tag);
 
-					__vlan_hwaccel_put_tag(rx_skb, vlan_tag);
+					__vlan_hwaccel_put_tag(rx_skb, htons(ETH_P_8021Q), vlan_tag);
 				}
 				if (nes_use_lro)
 					lro_receive_skb(&nesvnic->lro_mgr, rx_skb, NULL);
diff --git a/drivers/net/bonding/bond_alb.c b/drivers/net/bonding/bond_alb.c
index f5e052723029..e02cc265723a 100644
--- a/drivers/net/bonding/bond_alb.c
+++ b/drivers/net/bonding/bond_alb.c
@@ -514,7 +514,7 @@ static void rlb_update_client(struct rlb_client_info *client_info)
 		skb->dev = client_info->slave->dev;
 
 		if (client_info->tag) {
-			skb = vlan_put_tag(skb, client_info->vlan_id);
+			skb = vlan_put_tag(skb, htons(ETH_P_8021Q), client_info->vlan_id);
 			if (!skb) {
 				pr_err("%s: Error: failed to insert VLAN tag\n",
 				       client_info->slave->bond->dev->name);
@@ -1014,7 +1014,7 @@ static void alb_send_learning_packets(struct slave *slave, u8 mac_addr[])
 				continue;
 			}
 
-			skb = vlan_put_tag(skb, vlan->vlan_id);
+			skb = vlan_put_tag(skb, htons(ETH_P_8021Q), vlan->vlan_id);
 			if (!skb) {
 				pr_err("%s: Error: failed to insert VLAN tag\n",
 				       bond->dev->name);
diff --git a/drivers/net/ethernet/3com/typhoon.c b/drivers/net/ethernet/3com/typhoon.c
index 839a96213742..144942f6372b 100644
--- a/drivers/net/ethernet/3com/typhoon.c
+++ b/drivers/net/ethernet/3com/typhoon.c
@@ -1690,7 +1690,7 @@ typhoon_rx(struct typhoon *tp, struct basic_ring *rxRing, volatile __le32 * read
 			skb_checksum_none_assert(new_skb);
 
 		if (rx->rxStatus & TYPHOON_RX_VLAN)
-			__vlan_hwaccel_put_tag(new_skb,
+			__vlan_hwaccel_put_tag(new_skb, htons(ETH_P_8021Q),
 					       ntohl(rx->vlanTag) & 0xffff);
 		netif_receive_skb(new_skb);
 
diff --git a/drivers/net/ethernet/adaptec/starfire.c b/drivers/net/ethernet/adaptec/starfire.c
index cdbc5443ae3b..8b04bfc20cfb 100644
--- a/drivers/net/ethernet/adaptec/starfire.c
+++ b/drivers/net/ethernet/adaptec/starfire.c
@@ -1498,7 +1498,7 @@ static int __netdev_rx(struct net_device *dev, int *quota)
 				printk(KERN_DEBUG "  netdev_rx() vlanid = %d\n",
 				       vlid);
 			}
-			__vlan_hwaccel_put_tag(skb, vlid);
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlid);
 		}
 #endif /* VLAN_SUPPORT */
 		netif_receive_skb(skb);
diff --git a/drivers/net/ethernet/alteon/acenic.c b/drivers/net/ethernet/alteon/acenic.c
index a7689d931053..b7894f8af9d1 100644
--- a/drivers/net/ethernet/alteon/acenic.c
+++ b/drivers/net/ethernet/alteon/acenic.c
@@ -2019,7 +2019,7 @@ static void ace_rx_int(struct net_device *dev, u32 rxretprd, u32 rxretcsm)
 
 		/* send it up */
 		if ((bd_flags & BD_FLG_VLAN_TAG))
-			__vlan_hwaccel_put_tag(skb, retdesc->vlan);
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), retdesc->vlan);
 		netif_rx(skb);
 
 		dev->stats.rx_packets++;
diff --git a/drivers/net/ethernet/amd/amd8111e.c b/drivers/net/ethernet/amd/amd8111e.c
index 6bad84d6e2c4..8e6b665a6726 100644
--- a/drivers/net/ethernet/amd/amd8111e.c
+++ b/drivers/net/ethernet/amd/amd8111e.c
@@ -793,7 +793,7 @@ static int amd8111e_rx_poll(struct napi_struct *napi, int budget)
 #if AMD8111E_VLAN_TAG_USED
 			if (vtag == TT_VLAN_TAGGED){
 				u16 vlan_tag = le16_to_cpu(lp->rx_ring[rx_index].tag_ctrl_info);
-				__vlan_hwaccel_put_tag(skb, vlan_tag);
+				__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
 			}
 #endif
 			netif_receive_skb(skb);
diff --git a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
index 3565255cdd81..0ba900762b13 100644
--- a/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
+++ b/drivers/net/ethernet/atheros/atl1c/atl1c_main.c
@@ -1809,7 +1809,7 @@ rrs_checked:
 
 			AT_TAG_TO_VLAN(rrs->vlan_tag, vlan);
 			vlan = le16_to_cpu(vlan);
-			__vlan_hwaccel_put_tag(skb, vlan);
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan);
 		}
 		netif_receive_skb(skb);
 
diff --git a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
index 598a61151668..0688bb82b442 100644
--- a/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
+++ b/drivers/net/ethernet/atheros/atl1e/atl1e_main.c
@@ -1435,7 +1435,7 @@ static void atl1e_clean_rx_irq(struct atl1e_adapter *adapter, u8 que,
 				netdev_dbg(netdev,
 					   "RXD VLAN TAG<RRD>=0x%04x\n",
 					   prrs->vtag);
-				__vlan_hwaccel_put_tag(skb, vlan_tag);
+				__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
 			}
 			netif_receive_skb(skb);
 
diff --git a/drivers/net/ethernet/atheros/atlx/atl1.c b/drivers/net/ethernet/atheros/atlx/atl1.c
index fd7d85044e4a..fa0915f3999b 100644
--- a/drivers/net/ethernet/atheros/atlx/atl1.c
+++ b/drivers/net/ethernet/atheros/atlx/atl1.c
@@ -2024,7 +2024,7 @@ rrd_ok:
 					((rrd->vlan_tag & 7) << 13) |
 					((rrd->vlan_tag & 8) << 9);
 
-			__vlan_hwaccel_put_tag(skb, vlan_tag);
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
 		}
 		netif_receive_skb(skb);
 
diff --git a/drivers/net/ethernet/atheros/atlx/atl2.c b/drivers/net/ethernet/atheros/atlx/atl2.c
index 6b2c08a89b7e..265ce1b752ed 100644
--- a/drivers/net/ethernet/atheros/atlx/atl2.c
+++ b/drivers/net/ethernet/atheros/atlx/atl2.c
@@ -452,7 +452,7 @@ static void atl2_intr_rx(struct atl2_adapter *adapter)
 					((rxd->status.vtag&7) << 13) |
 					((rxd->status.vtag&8) << 9);
 
-				__vlan_hwaccel_put_tag(skb, vlan_tag);
+				__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
 			}
 			netif_rx(skb);
 			netdev->stats.rx_bytes += rx_size;
diff --git a/drivers/net/ethernet/broadcom/bnx2.c b/drivers/net/ethernet/broadcom/bnx2.c
index 42a8bc8df5dd..5d204492c603 100644
--- a/drivers/net/ethernet/broadcom/bnx2.c
+++ b/drivers/net/ethernet/broadcom/bnx2.c
@@ -3211,7 +3211,7 @@ bnx2_rx_int(struct bnx2 *bp, struct bnx2_napi *bnapi, int budget)
 		}
 		if ((status & L2_FHDR_STATUS_L2_VLAN_TAG) &&
 		    !(bp->rx_mode & BNX2_EMAC_RX_MODE_KEEP_VLAN_TAG))
-			__vlan_hwaccel_put_tag(skb, rx_hdr->l2_fhdr_vlan_tag);
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rx_hdr->l2_fhdr_vlan_tag);
 
 		skb->protocol = eth_type_trans(skb, bp->dev);
 
diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index 352e58ede4d5..6b50443d3456 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -719,7 +719,7 @@ static void bnx2x_tpa_stop(struct bnx2x *bp, struct bnx2x_fastpath *fp,
 		if (!bnx2x_fill_frag_skb(bp, fp, tpa_info, pages,
 					 skb, cqe, cqe_idx)) {
 			if (tpa_info->parsing_flags & PARSING_FLAGS_VLAN)
-				__vlan_hwaccel_put_tag(skb, tpa_info->vlan_tag);
+				__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tpa_info->vlan_tag);
 			bnx2x_gro_receive(bp, fp, skb);
 		} else {
 			DP(NETIF_MSG_RX_STATUS,
@@ -994,7 +994,7 @@ reuse_rx:
 
 		if (le16_to_cpu(cqe_fp->pars_flags.flags) &
 		    PARSING_FLAGS_VLAN)
-			__vlan_hwaccel_put_tag(skb,
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
 					       le16_to_cpu(cqe_fp->vlan_tag));
 		napi_gro_receive(&fp->napi, skb);
 
diff --git a/drivers/net/ethernet/broadcom/tg3.c b/drivers/net/ethernet/broadcom/tg3.c
index 0c22c9a059c4..ac83c87e0b1b 100644
--- a/drivers/net/ethernet/broadcom/tg3.c
+++ b/drivers/net/ethernet/broadcom/tg3.c
@@ -6715,7 +6715,7 @@ static int tg3_rx(struct tg3_napi *tnapi, int budget)
 
 		if (desc->type_flags & RXD_FLAG_VLAN &&
 		    !(tp->rx_mode & RX_MODE_KEEP_VLAN_TAG))
-			__vlan_hwaccel_put_tag(skb,
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
 					       desc->err_vlan & RXD_VLAN_MASK);
 
 		napi_gro_receive(&tnapi->napi, skb);
diff --git a/drivers/net/ethernet/brocade/bna/bnad.c b/drivers/net/ethernet/brocade/bna/bnad.c
index c0bc44e51fa9..ce4a030d3d0c 100644
--- a/drivers/net/ethernet/brocade/bna/bnad.c
+++ b/drivers/net/ethernet/brocade/bna/bnad.c
@@ -610,7 +610,7 @@ bnad_cq_process(struct bnad *bnad, struct bna_ccb *ccb, int budget)
 		rcb->rxq->rx_bytes += length;
 
 		if (flags & BNA_CQ_EF_VLAN)
-			__vlan_hwaccel_put_tag(skb, ntohs(cmpl->vlan_tag));
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ntohs(cmpl->vlan_tag));
 
 		if (BNAD_RXBUF_IS_PAGE(unmap_q->type))
 			napi_gro_frags(&rx_ctrl->napi);
diff --git a/drivers/net/ethernet/chelsio/cxgb/sge.c b/drivers/net/ethernet/chelsio/cxgb/sge.c
index f85e0659432b..8061fb0ef7ed 100644
--- a/drivers/net/ethernet/chelsio/cxgb/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb/sge.c
@@ -1386,7 +1386,7 @@ static void sge_rx(struct sge *sge, struct freelQ *fl, unsigned int len)
 
 	if (p->vlan_valid) {
 		st->vlan_xtract++;
-		__vlan_hwaccel_put_tag(skb, ntohs(p->vlan));
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ntohs(p->vlan));
 	}
 	netif_receive_skb(skb);
 }
diff --git a/drivers/net/ethernet/chelsio/cxgb3/sge.c b/drivers/net/ethernet/chelsio/cxgb3/sge.c
index 9d67eb794c4b..f12e6b85a653 100644
--- a/drivers/net/ethernet/chelsio/cxgb3/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb3/sge.c
@@ -2030,7 +2030,7 @@ static void rx_eth(struct adapter *adap, struct sge_rspq *rq,
 
 	if (p->vlan_valid) {
 		qs->port_stats[SGE_PSTAT_VLANEX]++;
-		__vlan_hwaccel_put_tag(skb, ntohs(p->vlan));
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ntohs(p->vlan));
 	}
 	if (rq->polling) {
 		if (lro)
@@ -2132,7 +2132,7 @@ static void lro_add_page(struct adapter *adap, struct sge_qset *qs,
 
 	if (cpl->vlan_valid) {
 		qs->port_stats[SGE_PSTAT_VLANEX]++;
-		__vlan_hwaccel_put_tag(skb, ntohs(cpl->vlan));
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ntohs(cpl->vlan));
 	}
 	napi_gro_frags(&qs->napi);
 }
diff --git a/drivers/net/ethernet/chelsio/cxgb4/sge.c b/drivers/net/ethernet/chelsio/cxgb4/sge.c
index 8b47b253e204..2bfbb206b35a 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/sge.c
@@ -1633,7 +1633,7 @@ static void do_gro(struct sge_eth_rxq *rxq, const struct pkt_gl *gl,
 		skb->rxhash = (__force u32)pkt->rsshdr.hash_val;
 
 	if (unlikely(pkt->vlan_ex)) {
-		__vlan_hwaccel_put_tag(skb, ntohs(pkt->vlan));
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ntohs(pkt->vlan));
 		rxq->stats.vlan_ex++;
 	}
 	ret = napi_gro_frags(&rxq->rspq.napi);
@@ -1705,7 +1705,7 @@ int t4_ethrx_handler(struct sge_rspq *q, const __be64 *rsp,
 		skb_checksum_none_assert(skb);
 
 	if (unlikely(pkt->vlan_ex)) {
-		__vlan_hwaccel_put_tag(skb, ntohs(pkt->vlan));
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ntohs(pkt->vlan));
 		rxq->stats.vlan_ex++;
 	}
 	netif_receive_skb(skb);
diff --git a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
index 61dfb2a47929..df296af20bd5 100644
--- a/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb4vf/sge.c
@@ -1482,7 +1482,8 @@ static void do_gro(struct sge_eth_rxq *rxq, const struct pkt_gl *gl,
 	skb_record_rx_queue(skb, rxq->rspq.idx);
 
 	if (pkt->vlan_ex) {
-		__vlan_hwaccel_put_tag(skb, be16_to_cpu(pkt->vlan));
+		__vlan_hwaccel_put_tag(skb, cpu_to_be16(ETH_P_8021Q),
+					be16_to_cpu(pkt->vlan));
 		rxq->stats.vlan_ex++;
 	}
 	ret = napi_gro_frags(&rxq->rspq.napi);
@@ -1551,7 +1552,7 @@ int t4vf_ethrx_handler(struct sge_rspq *rspq, const __be64 *rsp,
 
 	if (pkt->vlan_ex) {
 		rxq->stats.vlan_ex++;
-		__vlan_hwaccel_put_tag(skb, be16_to_cpu(pkt->vlan));
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), be16_to_cpu(pkt->vlan));
 	}
 
 	netif_receive_skb(skb);
diff --git a/drivers/net/ethernet/cisco/enic/enic_main.c b/drivers/net/ethernet/cisco/enic/enic_main.c
index 05c1e59b6bff..635f55992d7e 100644
--- a/drivers/net/ethernet/cisco/enic/enic_main.c
+++ b/drivers/net/ethernet/cisco/enic/enic_main.c
@@ -1300,7 +1300,7 @@ static void enic_rq_indicate_buf(struct vnic_rq *rq,
 		}
 
 		if (vlan_stripped)
-			__vlan_hwaccel_put_tag(skb, vlan_tci);
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tci);
 
 		if (netdev->features & NETIF_F_GRO)
 			napi_gro_receive(&enic->napi[q_number], skb);
diff --git a/drivers/net/ethernet/emulex/benet/be_main.c b/drivers/net/ethernet/emulex/benet/be_main.c
index b41333184916..811d0a47d17a 100644
--- a/drivers/net/ethernet/emulex/benet/be_main.c
+++ b/drivers/net/ethernet/emulex/benet/be_main.c
@@ -771,7 +771,7 @@ static struct sk_buff *be_insert_vlan_in_pkt(struct be_adapter *adapter,
 
 	if (vlan_tx_tag_present(skb)) {
 		vlan_tag = be_get_tx_vlan_tag(adapter, skb);
-		__vlan_put_tag(skb, vlan_tag);
+		__vlan_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
 		skb->vlan_tci = 0;
 	}
 
@@ -1383,7 +1383,7 @@ static void be_rx_compl_process(struct be_rx_obj *rxo,
 
 
 	if (rxcp->vlanf)
-		__vlan_hwaccel_put_tag(skb, rxcp->vlan_tag);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
 
 	netif_receive_skb(skb);
 }
@@ -1439,7 +1439,7 @@ void be_rx_compl_process_gro(struct be_rx_obj *rxo, struct napi_struct *napi,
 		skb->rxhash = rxcp->rss_hash;
 
 	if (rxcp->vlanf)
-		__vlan_hwaccel_put_tag(skb, rxcp->vlan_tag);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rxcp->vlan_tag);
 
 	napi_gro_frags(napi);
 }
diff --git a/drivers/net/ethernet/intel/e1000/e1000_main.c b/drivers/net/ethernet/intel/e1000/e1000_main.c
index 8239dafdd8e7..59ad007dd5aa 100644
--- a/drivers/net/ethernet/intel/e1000/e1000_main.c
+++ b/drivers/net/ethernet/intel/e1000/e1000_main.c
@@ -4003,7 +4003,7 @@ static void e1000_receive_skb(struct e1000_adapter *adapter, u8 status,
 	if (status & E1000_RXD_STAT_VP) {
 		u16 vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK;
 
-		__vlan_hwaccel_put_tag(skb, vid);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
 	}
 	napi_gro_receive(&adapter->napi, skb);
 }
diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index 8c17f01a155f..da7f2fad5ba4 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -554,7 +554,7 @@ static void e1000_receive_skb(struct e1000_adapter *adapter,
 	skb->protocol = eth_type_trans(skb, netdev);
 
 	if (staterr & E1000_RXD_STAT_VP)
-		__vlan_hwaccel_put_tag(skb, tag);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
 
 	napi_gro_receive(&adapter->napi, skb);
 }
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index d13ea71c7c1f..9bf08b977daa 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -6683,7 +6683,7 @@ static void igb_process_skb_fields(struct igb_ring *rx_ring,
 		else
 			vid = le16_to_cpu(rx_desc->wb.upper.vlan);
 
-		__vlan_hwaccel_put_tag(skb, vid);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
 	}
 
 	skb_record_rx_queue(skb, rx_ring->queue_index);
diff --git a/drivers/net/ethernet/intel/igbvf/netdev.c b/drivers/net/ethernet/intel/igbvf/netdev.c
index 3854fd698b85..93eb7ee06d3e 100644
--- a/drivers/net/ethernet/intel/igbvf/netdev.c
+++ b/drivers/net/ethernet/intel/igbvf/netdev.c
@@ -116,7 +116,7 @@ static void igbvf_receive_skb(struct igbvf_adapter *adapter,
 		else
 			vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK;
 		if (test_bit(vid, adapter->active_vlans))
-			__vlan_hwaccel_put_tag(skb, vid);
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
 	}
 
 	napi_gro_receive(&adapter->rx_ring->napi, skb);
diff --git a/drivers/net/ethernet/intel/ixgb/ixgb_main.c b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
index a32f274acd36..fce3e92f9d11 100644
--- a/drivers/net/ethernet/intel/ixgb/ixgb_main.c
+++ b/drivers/net/ethernet/intel/ixgb/ixgb_main.c
@@ -2082,8 +2082,8 @@ ixgb_clean_rx_irq(struct ixgb_adapter *adapter, int *work_done, int work_to_do)
 
 		skb->protocol = eth_type_trans(skb, netdev);
 		if (status & IXGB_RX_DESC_STATUS_VP)
-			__vlan_hwaccel_put_tag(skb,
-					       le16_to_cpu(rx_desc->special));
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
+				       le16_to_cpu(rx_desc->special));
 
 		netif_receive_skb(skb);
 
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 3becffc77321..6225f880a3f4 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -1491,7 +1491,7 @@ static void ixgbe_process_skb_fields(struct ixgbe_ring *rx_ring,
 	if ((dev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
 	    ixgbe_test_staterr(rx_desc, IXGBE_RXD_STAT_VP)) {
 		u16 vid = le16_to_cpu(rx_desc->wb.upper.vlan);
-		__vlan_hwaccel_put_tag(skb, vid);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
 	}
 
 	skb_record_rx_queue(skb, rx_ring->queue_index);
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 4bc1f84c9352..1f5166ad6bb5 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -291,7 +291,7 @@ static void ixgbevf_receive_skb(struct ixgbevf_q_vector *q_vector,
 	u16 tag = le16_to_cpu(rx_desc->wb.upper.vlan);
 
 	if (is_vlan && test_bit(tag & VLAN_VID_MASK, adapter->active_vlans))
-		__vlan_hwaccel_put_tag(skb, tag);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), tag);
 
 	if (!(adapter->flags & IXGBE_FLAG_IN_NETPOLL))
 		napi_gro_receive(&q_vector->napi, skb);
diff --git a/drivers/net/ethernet/jme.c b/drivers/net/ethernet/jme.c
index d28ce6f97172..070a6f1a0577 100644
--- a/drivers/net/ethernet/jme.c
+++ b/drivers/net/ethernet/jme.c
@@ -1059,7 +1059,7 @@ jme_alloc_and_feed_skb(struct jme_adapter *jme, int idx)
 		if (rxdesc->descwb.flags & cpu_to_le16(RXWBFLAG_TAGON)) {
 			u16 vid = le16_to_cpu(rxdesc->descwb.vlan);
 
-			__vlan_hwaccel_put_tag(skb, vid);
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
 			NET_STAT(jme).rx_bytes += 4;
 		}
 		jme->jme_rx(skb);
diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c
index bf9da1b7b090..256ae789c143 100644
--- a/drivers/net/ethernet/marvell/sky2.c
+++ b/drivers/net/ethernet/marvell/sky2.c
@@ -2713,7 +2713,7 @@ static void sky2_rx_tag(struct sky2_port *sky2, u16 length)
 	struct sk_buff *skb;
 
 	skb = sky2->rx_ring[sky2->rx_next].skb;
-	__vlan_hwaccel_put_tag(skb, be16_to_cpu(length));
+	__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), be16_to_cpu(length));
 }
 
 static void sky2_rx_hash(struct sky2_port *sky2, u32 status)
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index c7f856308e1a..4006f8857cb5 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -673,7 +673,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
 					    cpu_to_be32(MLX4_CQE_VLAN_PRESENT_MASK)) {
 						u16 vid = be16_to_cpu(cqe->sl_vid);
 
-						__vlan_hwaccel_put_tag(gro_skb, vid);
+						__vlan_hwaccel_put_tag(gro_skb, htons(ETH_P_8021Q), vid);
 					}
 
 					if (dev->features & NETIF_F_RXHASH)
@@ -716,7 +716,7 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
 
 		if (be32_to_cpu(cqe->vlan_my_qpn) &
 		    MLX4_CQE_VLAN_PRESENT_MASK)
-			__vlan_hwaccel_put_tag(skb, be16_to_cpu(cqe->sl_vid));
+			__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), be16_to_cpu(cqe->sl_vid));
 
 		/* Push it up the stack */
 		netif_receive_skb(skb);
diff --git a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
index 46262ea610fd..7be9788ed0f6 100644
--- a/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
+++ b/drivers/net/ethernet/myricom/myri10ge/myri10ge.c
@@ -1290,7 +1290,7 @@ myri10ge_vlan_rx(struct net_device *dev, void *addr, struct sk_buff *skb)
 			skb->csum = csum_sub(skb->csum, vsum);
 		}
 		/* pop tag */
-		__vlan_hwaccel_put_tag(skb, ntohs(veh->h_vlan_TCI));
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ntohs(veh->h_vlan_TCI));
 		memmove(va + VLAN_HLEN, va, 2 * ETH_ALEN);
 		skb->len -= VLAN_HLEN;
 		skb->data_len -= VLAN_HLEN;
diff --git a/drivers/net/ethernet/natsemi/ns83820.c b/drivers/net/ethernet/natsemi/ns83820.c
index 60267e91cbda..d3b47003a575 100644
--- a/drivers/net/ethernet/natsemi/ns83820.c
+++ b/drivers/net/ethernet/natsemi/ns83820.c
@@ -911,7 +911,7 @@ static void rx_irq(struct net_device *ndev)
 				unsigned short tag;
 
 				tag = ntohs(extsts & EXTSTS_VTG_MASK);
-				__vlan_hwaccel_put_tag(skb, tag);
+				__vlan_hwaccel_put_tag(skb, htons(ETH_P_IPV6), tag);
 			}
 #endif
 			rx_rc = netif_rx(skb);
diff --git a/drivers/net/ethernet/neterion/s2io.c b/drivers/net/ethernet/neterion/s2io.c
index ec82d59b03ed..51b00941302c 100644
--- a/drivers/net/ethernet/neterion/s2io.c
+++ b/drivers/net/ethernet/neterion/s2io.c
@@ -8555,7 +8555,7 @@ static void queue_rx_frame(struct sk_buff *skb, u16 vlan_tag)
 
 	skb->protocol = eth_type_trans(skb, dev);
 	if (vlan_tag && sp->vlan_strip_flag)
-		__vlan_hwaccel_put_tag(skb, vlan_tag);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tag);
 	if (sp->config.napi)
 		netif_receive_skb(skb);
 	else
diff --git a/drivers/net/ethernet/neterion/vxge/vxge-main.c b/drivers/net/ethernet/neterion/vxge/vxge-main.c
index a9396142201c..cbfaed5f2f8d 100644
--- a/drivers/net/ethernet/neterion/vxge/vxge-main.c
+++ b/drivers/net/ethernet/neterion/vxge/vxge-main.c
@@ -312,7 +312,7 @@ vxge_rx_complete(struct vxge_ring *ring, struct sk_buff *skb, u16 vlan,
 
 	if (ext_info->vlan &&
 	    ring->vlan_tag_strip == VXGE_HW_VPATH_RPA_STRIP_VLAN_TAG_ENABLE)
-		__vlan_hwaccel_put_tag(skb, ext_info->vlan);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ext_info->vlan);
 	napi_gro_receive(ring->napi_p, skb);
 
 	vxge_debug_entryexit(VXGE_TRACE,
diff --git a/drivers/net/ethernet/nvidia/forcedeth.c b/drivers/net/ethernet/nvidia/forcedeth.c
index fcad64081d74..b003fe53c8e2 100644
--- a/drivers/net/ethernet/nvidia/forcedeth.c
+++ b/drivers/net/ethernet/nvidia/forcedeth.c
@@ -2969,7 +2969,7 @@ static int nv_rx_process_optimized(struct net_device *dev, int limit)
 			    vlanflags & NV_RX3_VLAN_TAG_PRESENT) {
 				u16 vid = vlanflags & NV_RX3_VLAN_TAG_MASK;
 
-				__vlan_hwaccel_put_tag(skb, vid);
+				__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
 			}
 			napi_gro_receive(&np->napi, skb);
 			u64_stats_update_begin(&np->swstats_rx_syncp);
diff --git a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
index a85ca63a2c9e..56223a6aa408 100644
--- a/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
+++ b/drivers/net/ethernet/qlogic/qlcnic/qlcnic_io.c
@@ -1050,7 +1050,7 @@ qlcnic_process_rcv(struct qlcnic_adapter *adapter,
 	skb->protocol = eth_type_trans(skb, netdev);
 
 	if (vid != 0xffff)
-		__vlan_hwaccel_put_tag(skb, vid);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
 
 	napi_gro_receive(&sds_ring->napi, skb);
 
@@ -1153,7 +1153,7 @@ qlcnic_process_lro(struct qlcnic_adapter *adapter,
 	}
 
 	if (vid != 0xffff)
-		__vlan_hwaccel_put_tag(skb, vid);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
 	netif_receive_skb(skb);
 
 	adapter->stats.lro_pkts++;
@@ -1518,7 +1518,7 @@ qlcnic_83xx_process_rcv(struct qlcnic_adapter *adapter,
 	skb->protocol = eth_type_trans(skb, netdev);
 
 	if (vid != 0xffff)
-		__vlan_hwaccel_put_tag(skb, vid);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
 
 	napi_gro_receive(&sds_ring->napi, skb);
 
@@ -1615,7 +1615,7 @@ qlcnic_83xx_process_lro(struct qlcnic_adapter *adapter,
 	}
 
 	if (vid != 0xffff)
-		__vlan_hwaccel_put_tag(skb, vid);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
 
 	netif_receive_skb(skb);
 
diff --git a/drivers/net/ethernet/qlogic/qlge/qlge_main.c b/drivers/net/ethernet/qlogic/qlge/qlge_main.c
index a9016acc2d6a..44cf72ac2489 100644
--- a/drivers/net/ethernet/qlogic/qlge/qlge_main.c
+++ b/drivers/net/ethernet/qlogic/qlge/qlge_main.c
@@ -1498,7 +1498,7 @@ static void ql_process_mac_rx_gro_page(struct ql_adapter *qdev,
 	skb->ip_summed = CHECKSUM_UNNECESSARY;
 	skb_record_rx_queue(skb, rx_ring->cq_id);
 	if (vlan_id != 0xffff)
-		__vlan_hwaccel_put_tag(skb, vlan_id);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_id);
 	napi_gro_frags(napi);
 }
 
@@ -1574,7 +1574,7 @@ static void ql_process_mac_rx_page(struct ql_adapter *qdev,
 
 	skb_record_rx_queue(skb, rx_ring->cq_id);
 	if (vlan_id != 0xffff)
-		__vlan_hwaccel_put_tag(skb, vlan_id);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_id);
 	if (skb->ip_summed == CHECKSUM_UNNECESSARY)
 		napi_gro_receive(napi, skb);
 	else
@@ -1670,7 +1670,7 @@ static void ql_process_mac_rx_skb(struct ql_adapter *qdev,
 
 	skb_record_rx_queue(skb, rx_ring->cq_id);
 	if (vlan_id != 0xffff)
-		__vlan_hwaccel_put_tag(skb, vlan_id);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_id);
 	if (skb->ip_summed == CHECKSUM_UNNECESSARY)
 		napi_gro_receive(&rx_ring->napi, skb);
 	else
@@ -1975,7 +1975,7 @@ static void ql_process_mac_split_rx_intr(struct ql_adapter *qdev,
 	rx_ring->rx_bytes += skb->len;
 	skb_record_rx_queue(skb, rx_ring->cq_id);
 	if ((ib_mac_rsp->flags2 & IB_MAC_IOCB_RSP_V) && (vlan_id != 0))
-		__vlan_hwaccel_put_tag(skb, vlan_id);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_id);
 	if (skb->ip_summed == CHECKSUM_UNNECESSARY)
 		napi_gro_receive(&rx_ring->napi, skb);
 	else
diff --git a/drivers/net/ethernet/realtek/8139cp.c b/drivers/net/ethernet/realtek/8139cp.c
index 6d03b52e56f1..7d1fb9ad1296 100644
--- a/drivers/net/ethernet/realtek/8139cp.c
+++ b/drivers/net/ethernet/realtek/8139cp.c
@@ -431,7 +431,7 @@ static inline void cp_rx_skb (struct cp_private *cp, struct sk_buff *skb,
 	cp->dev->stats.rx_bytes += skb->len;
 
 	if (opts2 & RxVlanTagged)
-		__vlan_hwaccel_put_tag(skb, swab16(opts2 & 0xffff));
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), swab16(opts2 & 0xffff));
 
 	napi_gro_receive(&cp->napi, skb);
 }
diff --git a/drivers/net/ethernet/realtek/r8169.c b/drivers/net/ethernet/realtek/r8169.c
index 86d5d7909d10..c6dac38fd9cc 100644
--- a/drivers/net/ethernet/realtek/r8169.c
+++ b/drivers/net/ethernet/realtek/r8169.c
@@ -1843,7 +1843,7 @@ static void rtl8169_rx_vlan_tag(struct RxDesc *desc, struct sk_buff *skb)
 	u32 opts2 = le32_to_cpu(desc->opts2);
 
 	if (opts2 & RxVlanTag)
-		__vlan_hwaccel_put_tag(skb, swab16(opts2 & 0xffff));
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), swab16(opts2 & 0xffff));
 }
 
 static int rtl8169_gset_tbi(struct net_device *dev, struct ethtool_cmd *cmd)
diff --git a/drivers/net/ethernet/tehuti/tehuti.c b/drivers/net/ethernet/tehuti/tehuti.c
index f7050c573519..571452e786d5 100644
--- a/drivers/net/ethernet/tehuti/tehuti.c
+++ b/drivers/net/ethernet/tehuti/tehuti.c
@@ -1148,7 +1148,7 @@ NETIF_RX_MUX(struct bdx_priv *priv, u32 rxd_val1, u16 rxd_vlan,
 		    priv->ndev->name,
 		    GET_RXD_VLAN_ID(rxd_vlan),
 		    GET_RXD_VTAG(rxd_val1));
-		__vlan_hwaccel_put_tag(skb, GET_RXD_VLAN_TCI(rxd_vlan));
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), GET_RXD_VLAN_TCI(rxd_vlan));
 	}
 	netif_receive_skb(skb);
 }
diff --git a/drivers/net/ethernet/via/via-rhine.c b/drivers/net/ethernet/via/via-rhine.c
index c6014916f622..ca98acabf1b4 100644
--- a/drivers/net/ethernet/via/via-rhine.c
+++ b/drivers/net/ethernet/via/via-rhine.c
@@ -1936,7 +1936,7 @@ static int rhine_rx(struct net_device *dev, int limit)
 			skb->protocol = eth_type_trans(skb, dev);
 
 			if (unlikely(desc_length & DescTag))
-				__vlan_hwaccel_put_tag(skb, vlan_tci);
+				__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vlan_tci);
 			netif_receive_skb(skb);
 
 			u64_stats_update_begin(&rp->rx_stats.syncp);
diff --git a/drivers/net/ethernet/via/via-velocity.c b/drivers/net/ethernet/via/via-velocity.c
index 91cd59146c24..fb6248956ee2 100644
--- a/drivers/net/ethernet/via/via-velocity.c
+++ b/drivers/net/ethernet/via/via-velocity.c
@@ -2080,7 +2080,7 @@ static int velocity_receive_frame(struct velocity_info *vptr, int idx)
 	if (rd->rdesc0.RSR & RSR_DETAG) {
 		u16 vid = swab16(le16_to_cpu(rd->rdesc1.PQTAG));
 
-		__vlan_hwaccel_put_tag(skb, vid);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid);
 	}
 	netif_rx(skb);
 
diff --git a/drivers/net/usb/cdc_mbim.c b/drivers/net/usb/cdc_mbim.c
index b7e9cd7ca6d5..cc6dfe4102fd 100644
--- a/drivers/net/usb/cdc_mbim.c
+++ b/drivers/net/usb/cdc_mbim.c
@@ -221,7 +221,7 @@ static struct sk_buff *cdc_mbim_process_dgram(struct usbnet *dev, u8 *buf, size_
 
 	/* map MBIM session to VLAN */
 	if (tci)
-		vlan_put_tag(skb, tci);
+		vlan_put_tag(skb, htons(ETH_P_8021Q), tci);
 err:
 	return skb;
 }
diff --git a/drivers/net/vmxnet3/vmxnet3_drv.c b/drivers/net/vmxnet3/vmxnet3_drv.c
index 27b889992ab8..55a62cae2cb4 100644
--- a/drivers/net/vmxnet3/vmxnet3_drv.c
+++ b/drivers/net/vmxnet3/vmxnet3_drv.c
@@ -1293,7 +1293,7 @@ vmxnet3_rq_rx_complete(struct vmxnet3_rx_queue *rq,
 			skb->protocol = eth_type_trans(skb, adapter->netdev);
 
 			if (unlikely(rcd->ts))
-				__vlan_hwaccel_put_tag(skb, rcd->tci);
+				__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), rcd->tci);
 
 			if (adapter->netdev->features & NETIF_F_LRO)
 				netif_receive_skb(skb);
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index 2c9fb65f8267..8086ff9988b1 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -157,9 +157,18 @@ static inline bool vlan_uses_dev(const struct net_device *dev)
 }
 #endif
 
+static inline bool vlan_hw_offload_capable(netdev_features_t features,
+					   __be16 proto)
+{
+	if (proto == htons(ETH_P_8021Q) && features & NETIF_F_HW_VLAN_CTAG_TX)
+		return true;
+	return false;
+}
+
 /**
  * vlan_insert_tag - regular VLAN tag inserting
  * @skb: skbuff to tag
+ * @vlan_proto: VLAN encapsulation protocol
  * @vlan_tci: VLAN TCI to insert
  *
  * Inserts the VLAN tag into @skb as part of the payload
@@ -170,7 +179,8 @@ static inline bool vlan_uses_dev(const struct net_device *dev)
  *
  * Does not change skb->protocol so this function can be used during receive.
  */
-static inline struct sk_buff *vlan_insert_tag(struct sk_buff *skb, u16 vlan_tci)
+static inline struct sk_buff *vlan_insert_tag(struct sk_buff *skb,
+					      __be16 vlan_proto, u16 vlan_tci)
 {
 	struct vlan_ethhdr *veth;
 
@@ -185,7 +195,7 @@ static inline struct sk_buff *vlan_insert_tag(struct sk_buff *skb, u16 vlan_tci)
 	skb->mac_header -= VLAN_HLEN;
 
 	/* first, the ethernet type */
-	veth->h_vlan_proto = htons(ETH_P_8021Q);
+	veth->h_vlan_proto = vlan_proto;
 
 	/* now, the TCI */
 	veth->h_vlan_TCI = htons(vlan_tci);
@@ -204,24 +214,28 @@ static inline struct sk_buff *vlan_insert_tag(struct sk_buff *skb, u16 vlan_tci)
  * Following the skb_unshare() example, in case of error, the calling function
  * doesn't have to worry about freeing the original skb.
  */
-static inline struct sk_buff *__vlan_put_tag(struct sk_buff *skb, u16 vlan_tci)
+static inline struct sk_buff *__vlan_put_tag(struct sk_buff *skb,
+					     __be16 vlan_proto, u16 vlan_tci)
 {
-	skb = vlan_insert_tag(skb, vlan_tci);
+	skb = vlan_insert_tag(skb, vlan_proto, vlan_tci);
 	if (skb)
-		skb->protocol = htons(ETH_P_8021Q);
+		skb->protocol = vlan_proto;
 	return skb;
 }
 
 /**
  * __vlan_hwaccel_put_tag - hardware accelerated VLAN inserting
  * @skb: skbuff to tag
+ * @vlan_proto: VLAN encapsulation protocol
  * @vlan_tci: VLAN TCI to insert
  *
  * Puts the VLAN TCI in @skb->vlan_tci and lets the device do the rest
  */
 static inline struct sk_buff *__vlan_hwaccel_put_tag(struct sk_buff *skb,
+						     __be16 vlan_proto,
 						     u16 vlan_tci)
 {
+	skb->vlan_proto = vlan_proto;
 	skb->vlan_tci = VLAN_TAG_PRESENT | vlan_tci;
 	return skb;
 }
@@ -236,12 +250,13 @@ static inline struct sk_buff *__vlan_hwaccel_put_tag(struct sk_buff *skb,
  * Assumes skb->dev is the target that will xmit this frame.
  * Returns a VLAN tagged skb.
  */
-static inline struct sk_buff *vlan_put_tag(struct sk_buff *skb, u16 vlan_tci)
+static inline struct sk_buff *vlan_put_tag(struct sk_buff *skb,
+					   __be16 vlan_proto, u16 vlan_tci)
 {
-	if (skb->dev->features & NETIF_F_HW_VLAN_CTAG_TX) {
-		return __vlan_hwaccel_put_tag(skb, vlan_tci);
+	if (vlan_hw_offload_capable(skb->dev->features, vlan_proto)) {
+		return __vlan_hwaccel_put_tag(skb, vlan_proto, vlan_tci);
 	} else {
-		return __vlan_put_tag(skb, vlan_tci);
+		return __vlan_put_tag(skb, vlan_proto, vlan_tci);
 	}
 }
 
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index e27d1c782f32..f5bed7b31954 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -387,6 +387,7 @@ typedef unsigned char *sk_buff_data_t;
  *	@secmark: security marking
  *	@mark: Generic packet mark
  *	@dropcount: total number of sk_receive_queue overflows
+ *	@vlan_proto: vlan encapsulation protocol
  *	@vlan_tci: vlan tag control information
  *	@inner_transport_header: Inner transport layer header (encapsulation)
  *	@inner_network_header: Network layer header (encapsulation)
@@ -465,6 +466,7 @@ struct sk_buff {
 
 	__u32			rxhash;
 
+	__be16			vlan_proto;
 	__u16			vlan_tci;
 
 #ifdef CONFIG_NET_SCHED
diff --git a/net/8021q/vlan_core.c b/net/8021q/vlan_core.c
index 4e4c360353ea..bdb0b9d2e9cf 100644
--- a/net/8021q/vlan_core.c
+++ b/net/8021q/vlan_core.c
@@ -8,11 +8,12 @@
 bool vlan_do_receive(struct sk_buff **skbp)
 {
 	struct sk_buff *skb = *skbp;
+	__be16 vlan_proto = skb->vlan_proto;
 	u16 vlan_id = skb->vlan_tci & VLAN_VID_MASK;
 	struct net_device *vlan_dev;
 	struct vlan_pcpu_stats *rx_stats;
 
-	vlan_dev = vlan_find_dev(skb->dev, htons(ETH_P_8021Q), vlan_id);
+	vlan_dev = vlan_find_dev(skb->dev, vlan_proto, vlan_id);
 	if (!vlan_dev)
 		return false;
 
@@ -38,7 +39,8 @@ bool vlan_do_receive(struct sk_buff **skbp)
 		 * original position later
 		 */
 		skb_push(skb, offset);
-		skb = *skbp = vlan_insert_tag(skb, skb->vlan_tci);
+		skb = *skbp = vlan_insert_tag(skb, skb->vlan_proto,
+					      skb->vlan_tci);
 		if (!skb)
 			return false;
 		skb_pull(skb, offset + VLAN_HLEN);
@@ -127,7 +129,7 @@ struct sk_buff *vlan_untag(struct sk_buff *skb)
 
 	vhdr = (struct vlan_hdr *) skb->data;
 	vlan_tci = ntohs(vhdr->h_vlan_TCI);
-	__vlan_hwaccel_put_tag(skb, vlan_tci);
+	__vlan_hwaccel_put_tag(skb, skb->protocol, vlan_tci);
 
 	skb_pull_rcsum(skb, VLAN_HLEN);
 	vlan_set_encap_proto(skb, vhdr);
diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index d7457b7e1b95..8af508536d36 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -167,7 +167,7 @@ static netdev_tx_t vlan_dev_hard_start_xmit(struct sk_buff *skb,
 		u16 vlan_tci;
 		vlan_tci = vlan->vlan_id;
 		vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
-		skb = __vlan_hwaccel_put_tag(skb, vlan_tci);
+		skb = __vlan_hwaccel_put_tag(skb, vlan->vlan_proto, vlan_tci);
 	}
 
 	skb->dev = vlan->real_dev;
diff --git a/net/batman-adv/bridge_loop_avoidance.c b/net/batman-adv/bridge_loop_avoidance.c
index 6a4f728680ae..379061c72549 100644
--- a/net/batman-adv/bridge_loop_avoidance.c
+++ b/net/batman-adv/bridge_loop_avoidance.c
@@ -341,7 +341,7 @@ static void batadv_bla_send_claim(struct batadv_priv *bat_priv, uint8_t *mac,
 	}
 
 	if (vid != -1)
-		skb = vlan_insert_tag(skb, vid);
+		skb = vlan_insert_tag(skb, htons(ETH_P_8021Q), vid);
 
 	skb_reset_mac_header(skb);
 	skb->protocol = eth_type_trans(skb, soft_iface);
diff --git a/net/bridge/br_netfilter.c b/net/bridge/br_netfilter.c
index bd61bf5159c9..1ed75bfd8d1d 100644
--- a/net/bridge/br_netfilter.c
+++ b/net/bridge/br_netfilter.c
@@ -535,7 +535,7 @@ static struct net_device *brnf_get_logical_dev(struct sk_buff *skb, const struct
 	if (brnf_pass_vlan_indev == 0 || !vlan_tx_tag_present(skb))
 		return br;
 
-	vlan = __vlan_find_dev_deep(br, htons(ETH_P_8021Q),
+	vlan = __vlan_find_dev_deep(br, skb->vlan_proto,
 				    vlan_tx_tag_get(skb) & VLAN_VID_MASK);
 
 	return vlan ? vlan : br;
diff --git a/net/bridge/br_vlan.c b/net/bridge/br_vlan.c
index c3076e2c4294..bd58b45f5f90 100644
--- a/net/bridge/br_vlan.c
+++ b/net/bridge/br_vlan.c
@@ -175,7 +175,7 @@ struct sk_buff *br_handle_vlan(struct net_bridge *br,
 			 * mac header.
 			 */
 			skb_push(skb, ETH_HLEN);
-			skb = __vlan_put_tag(skb, skb->vlan_tci);
+			skb = __vlan_put_tag(skb, skb->vlan_proto, skb->vlan_tci);
 			if (!skb)
 				goto out;
 			/* put skb->data back to where it was */
@@ -217,7 +217,7 @@ bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v,
 		/* PVID is set on this port.  Any untagged ingress
 		 * frame is considered to belong to this vlan.
 		 */
-		__vlan_hwaccel_put_tag(skb, pvid);
+		__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), pvid);
 		return true;
 	}
 
diff --git a/net/core/dev.c b/net/core/dev.c
index 07a8e9dc43fc..3a12ee132b59 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2482,8 +2482,9 @@ int dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev,
 		features = netif_skb_features(skb);
 
 		if (vlan_tx_tag_present(skb) &&
-		    !(features & NETIF_F_HW_VLAN_CTAG_TX)) {
-			skb = __vlan_put_tag(skb, vlan_tx_tag_get(skb));
+		    !vlan_hw_offload_capable(features, skb->vlan_proto)) {
+			skb = __vlan_put_tag(skb, skb->vlan_proto,
+					     vlan_tx_tag_get(skb));
 			if (unlikely(!skb))
 				goto out;
 
diff --git a/net/core/netpoll.c b/net/core/netpoll.c
index 8de961e67cf7..209d84253dd5 100644
--- a/net/core/netpoll.c
+++ b/net/core/netpoll.c
@@ -383,8 +383,9 @@ void netpoll_send_skb_on_dev(struct netpoll *np, struct sk_buff *skb,
 			if (__netif_tx_trylock(txq)) {
 				if (!netif_xmit_stopped(txq)) {
 					if (vlan_tx_tag_present(skb) &&
-					    !(netif_skb_features(skb) & NETIF_F_HW_VLAN_CTAG_TX)) {
-						skb = __vlan_put_tag(skb, vlan_tx_tag_get(skb));
+					    !vlan_hw_offload_capable(netif_skb_features(skb),
+								     skb->vlan_proto)) {
+						skb = __vlan_put_tag(skb, skb->vlan_proto, vlan_tx_tag_get(skb));
 						if (unlikely(!skb))
 							break;
 						skb->vlan_tci = 0;
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index ba646145cd5c..a92d9e7d10f7 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -707,6 +707,7 @@ static void __copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
 	new->tc_verd		= old->tc_verd;
 #endif
 #endif
+	new->vlan_proto		= old->vlan_proto;
 	new->vlan_tci		= old->vlan_tci;
 
 	skb_copy_secmark(new, old);
diff --git a/net/openvswitch/actions.c b/net/openvswitch/actions.c
index d4d5363c7ba7..894b6cbdd929 100644
--- a/net/openvswitch/actions.c
+++ b/net/openvswitch/actions.c
@@ -98,7 +98,7 @@ static int pop_vlan(struct sk_buff *skb)
 	if (unlikely(err))
 		return err;
 
-	__vlan_hwaccel_put_tag(skb, ntohs(tci));
+	__vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), ntohs(tci));
 	return 0;
 }
 
@@ -110,7 +110,7 @@ static int push_vlan(struct sk_buff *skb, const struct ovs_action_push_vlan *vla
 		/* push down current VLAN tag */
 		current_tag = vlan_tx_tag_get(skb);
 
-		if (!__vlan_put_tag(skb, current_tag))
+		if (!__vlan_put_tag(skb, skb->vlan_proto, current_tag))
 			return -ENOMEM;
 
 		if (skb->ip_summed == CHECKSUM_COMPLETE)
@@ -118,7 +118,7 @@ static int push_vlan(struct sk_buff *skb, const struct ovs_action_push_vlan *vla
 					+ (2 * ETH_ALEN), VLAN_HLEN, 0));
 
 	}
-	__vlan_hwaccel_put_tag(skb, ntohs(vlan->vlan_tci) & ~VLAN_TAG_PRESENT);
+	__vlan_hwaccel_put_tag(skb, vlan->vlan_tpid, ntohs(vlan->vlan_tci) & ~VLAN_TAG_PRESENT);
 	return 0;
 }
 
diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index b7d0b7c3fe2c..7bb5d4f6bb90 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -401,7 +401,7 @@ static int queue_userspace_packet(struct net *net, int dp_ifindex,
 		if (!nskb)
 			return -ENOMEM;
 
-		nskb = __vlan_put_tag(nskb, vlan_tx_tag_get(nskb));
+		nskb = __vlan_put_tag(nskb, nskb->vlan_proto, vlan_tx_tag_get(nskb));
 		if (!nskb)
 			return -ENOMEM;
 
-- 
cgit v1.2.3


From 0ebd0ac5ff01ebf412e1bd3c33620ef7ffc5d866 Mon Sep 17 00:00:00 2001
From: Patrick McHardy <kaber@trash.net>
Date: Wed, 17 Apr 2013 06:46:58 +0000
Subject: net: add function to allocate sk_buff head without data area

Add a function to allocate a sk_buff head without any data. This will
be used by memory mapped netlink to attach data from the mmaped area
to the skb.

Additionally change skb_release_all() to check whether the skb has a
data area to allow the skb destructor to clear the data pointer in case
only a head has been allocated.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/linux/skbuff.h |  6 ++++++
 net/core/skbuff.c      | 30 +++++++++++++++++++++++++++++-
 2 files changed, 35 insertions(+), 1 deletion(-)

(limited to 'include/linux/skbuff.h')

diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h
index f5bed7b31954..2e0ced1af3b1 100644
--- a/include/linux/skbuff.h
+++ b/include/linux/skbuff.h
@@ -651,6 +651,12 @@ static inline struct sk_buff *alloc_skb_fclone(unsigned int size,
 	return __alloc_skb(size, priority, SKB_ALLOC_FCLONE, NUMA_NO_NODE);
 }
 
+extern struct sk_buff *__alloc_skb_head(gfp_t priority, int node);
+static inline struct sk_buff *alloc_skb_head(gfp_t priority)
+{
+	return __alloc_skb_head(priority, -1);
+}
+
 extern struct sk_buff *skb_morph(struct sk_buff *dst, struct sk_buff *src);
 extern int skb_copy_ubufs(struct sk_buff *skb, gfp_t gfp_mask);
 extern struct sk_buff *skb_clone(struct sk_buff *skb,
diff --git a/net/core/skbuff.c b/net/core/skbuff.c
index a92d9e7d10f7..898cf5c566f9 100644
--- a/net/core/skbuff.c
+++ b/net/core/skbuff.c
@@ -179,6 +179,33 @@ out:
  *
  */
 
+struct sk_buff *__alloc_skb_head(gfp_t gfp_mask, int node)
+{
+	struct sk_buff *skb;
+
+	/* Get the HEAD */
+	skb = kmem_cache_alloc_node(skbuff_head_cache,
+				    gfp_mask & ~__GFP_DMA, node);
+	if (!skb)
+		goto out;
+
+	/*
+	 * Only clear those fields we need to clear, not those that we will
+	 * actually initialise below. Hence, don't put any more fields after
+	 * the tail pointer in struct sk_buff!
+	 */
+	memset(skb, 0, offsetof(struct sk_buff, tail));
+	skb->data = NULL;
+	skb->truesize = sizeof(struct sk_buff);
+	atomic_set(&skb->users, 1);
+
+#ifdef NET_SKBUFF_DATA_USES_OFFSET
+	skb->mac_header = ~0U;
+#endif
+out:
+	return skb;
+}
+
 /**
  *	__alloc_skb	-	allocate a network buffer
  *	@size: size to allocate
@@ -584,7 +611,8 @@ static void skb_release_head_state(struct sk_buff *skb)
 static void skb_release_all(struct sk_buff *skb)
 {
 	skb_release_head_state(skb);
-	skb_release_data(skb);
+	if (likely(skb->data))
+		skb_release_data(skb);
 }
 
 /**
-- 
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