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[SK_BUFF]: unions of just one member don't get anything done, kill them

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Renaming skb->h to skb->transport_header, skb->nh to skb->network_header and
skb->mac to skb->mac_header, to match the names of the associated helpers
(skb[_[re]set]_{transport,network,mac}_header).

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo
2007-04-10 21:21:55 -07:00
committed by David S. Miller
parent cfe1fc7759
commit b0e380b1d8
46 changed files with 162 additions and 165 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/net/arcnet/arcnet.c
View File

@@ -519,9 +519,12 @@ static int arcnet_header(struct sk_buff *skb, struct net_device *dev,
* real header when we do rebuild_header.
*/
*(uint16_t *) skb_push(skb, 2) = type;
if (skb->nh.raw - skb->mac.raw != 2)
/*
* XXX: Why not use skb->mac_len?
*/
if (skb->network_header - skb->mac_header != 2)
BUGMSG(D_NORMAL, "arcnet_header: Yikes! diff (%d) is not 2!\n",
(int)(skb->nh.raw - skb->mac.raw));
(int)(skb->network_header - skb->mac_header));
return -2; /* return error -- can't transmit yet! */
}
else {
@@ -554,11 +557,13 @@ static int arcnet_rebuild_header(struct sk_buff *skb)
unsigned short type;
uint8_t daddr=0;
struct ArcProto *proto;
if (skb->nh.raw - skb->mac.raw != 2) {
/*
* XXX: Why not use skb->mac_len?
*/
if (skb->network_header - skb->mac_header != 2) {
BUGMSG(D_NORMAL,
"rebuild_header: shouldn't be here! (hdrsize=%d)\n",
(int)(skb->nh.raw - skb->mac.raw));
"rebuild_header: shouldn't be here! (hdrsize=%d)\n",
(int)(skb->network_header - skb->mac_header));
return 0;
}
type = *(uint16_t *) skb_pull(skb, 2);

4
drivers/net/bonding/bond_3ad.c
View File

@@ -885,7 +885,7 @@ static int ad_lacpdu_send(struct port *port)
skb->dev = slave->dev;
skb_reset_mac_header(skb);
skb->nh.raw = skb->mac.raw + ETH_HLEN;
skb->network_header = skb->mac_header + ETH_HLEN;
skb->protocol = PKT_TYPE_LACPDU;
skb->priority = TC_PRIO_CONTROL;
@@ -929,7 +929,7 @@ static int ad_marker_send(struct port *port, struct marker *marker)
skb->dev = slave->dev;
skb_reset_mac_header(skb);
skb->nh.raw = skb->mac.raw + ETH_HLEN;
skb->network_header = skb->mac_header + ETH_HLEN;
skb->protocol = PKT_TYPE_LACPDU;
marker_header = (struct marker_header *)skb_put(skb, length);

2
drivers/net/bonding/bond_alb.c
View File

@@ -896,7 +896,7 @@ static void alb_send_learning_packets(struct slave *slave, u8 mac_addr[])
memcpy(data, &pkt, size);
skb_reset_mac_header(skb);
skb->nh.raw = skb->mac.raw + ETH_HLEN;
skb->network_header = skb->mac_header + ETH_HLEN;
skb->protocol = pkt.type;
skb->priority = TC_PRIO_CONTROL;
skb->dev = slave->dev;

2
drivers/net/wireless/hostap/hostap_80211_rx.c
View File

@@ -1077,7 +1077,7 @@ void hostap_80211_rx(struct net_device *dev, struct sk_buff *skb,
skb2->protocol = __constant_htons(ETH_P_802_3);
skb_reset_mac_header(skb2);
skb_reset_network_header(skb2);
/* skb2->nh.raw += ETH_HLEN; */
/* skb2->network_header += ETH_HLEN; */
dev_queue_xmit(skb2);
}

4
include/linux/if_vlan.h
View File

@@ -275,8 +275,8 @@ static inline struct sk_buff *__vlan_put_tag(struct sk_buff *skb, unsigned short
veth->h_vlan_TCI = htons(tag);
skb->protocol = __constant_htons(ETH_P_8021Q);
skb->mac.raw -= VLAN_HLEN;
skb->nh.raw -= VLAN_HLEN;
skb->mac_header -= VLAN_HLEN;
skb->network_header -= VLAN_HLEN;
return skb;
}

49
include/linux/skbuff.h
View File

@@ -69,8 +69,8 @@
* NONE: skb is checksummed by protocol or csum is not required.
*
* PARTIAL: device is required to csum packet as seen by hard_start_xmit
* from skb->h.raw to the end and to record the checksum
* at skb->h.raw+skb->csum.
* from skb->transport_header to the end and to record the checksum
* at skb->transport_header + skb->csum.
*
* Device must show its capabilities in dev->features, set
* at device setup time.
@@ -188,8 +188,8 @@ enum {
* @dev: Device we arrived on/are leaving by
* @iif: ifindex of device we arrived on
* @h: Transport layer header
* @nh: Network layer header
* @mac: Link layer header
* @network_header: Network layer header
* @mac_header: Link layer header
* @dst: destination entry
* @sp: the security path, used for xfrm
* @cb: Control buffer. Free for use by every layer. Put private vars here
@@ -236,18 +236,9 @@ struct sk_buff {
int iif;
/* 4 byte hole on 64 bit*/
union {
unsigned char *raw;
} h;
union {
unsigned char *raw;
} nh;
union {
unsigned char *raw;
} mac;
unsigned char *transport_header;
unsigned char *network_header;
unsigned char *mac_header;
struct dst_entry *dst;
struct sec_path *sp;
@@ -953,68 +944,68 @@ static inline void skb_reserve(struct sk_buff *skb, int len)
static inline unsigned char *skb_transport_header(const struct sk_buff *skb)
{
return skb->h.raw;
return skb->transport_header;
}
static inline void skb_reset_transport_header(struct sk_buff *skb)
{
skb->h.raw = skb->data;
skb->transport_header = skb->data;
}
static inline void skb_set_transport_header(struct sk_buff *skb,
const int offset)
{
skb->h.raw = skb->data + offset;
skb->transport_header = skb->data + offset;
}
static inline int skb_transport_offset(const struct sk_buff *skb)
{
return skb->h.raw - skb->data;
return skb->transport_header - skb->data;
}
static inline unsigned char *skb_network_header(const struct sk_buff *skb)
{
return skb->nh.raw;
return skb->network_header;
}
static inline void skb_reset_network_header(struct sk_buff *skb)
{
skb->nh.raw = skb->data;
skb->network_header = skb->data;
}
static inline void skb_set_network_header(struct sk_buff *skb, const int offset)
{
skb->nh.raw = skb->data + offset;
skb->network_header = skb->data + offset;
}
static inline int skb_network_offset(const struct sk_buff *skb)
{
return skb->nh.raw - skb->data;
return skb->network_header - skb->data;
}
static inline u32 skb_network_header_len(const struct sk_buff *skb)
{
return skb->h.raw - skb->nh.raw;
return skb->transport_header - skb->network_header;
}
static inline unsigned char *skb_mac_header(const struct sk_buff *skb)
{
return skb->mac.raw;
return skb->mac_header;
}
static inline int skb_mac_header_was_set(const struct sk_buff *skb)
{
return skb->mac.raw != NULL;
return skb->mac_header != NULL;
}
static inline void skb_reset_mac_header(struct sk_buff *skb)
{
skb->mac.raw = skb->data;
skb->mac_header = skb->data;
}
static inline void skb_set_mac_header(struct sk_buff *skb, const int offset)
{
skb->mac.raw = skb->data + offset;
skb->mac_header = skb->data + offset;
}
/*

2
net/802/psnap.c
View File

@@ -59,7 +59,7 @@ static int snap_rcv(struct sk_buff *skb, struct net_device *dev,
proto = find_snap_client(skb_transport_header(skb));
if (proto) {
/* Pass the frame on. */
skb->h.raw += 5;
skb->transport_header += 5;
skb_pull_rcsum(skb, 5);
rc = proto->rcvfunc(skb, dev, &snap_packet_type, orig_dev);
} else {

2
net/8021q/vlan_dev.c
View File

@@ -83,7 +83,7 @@ static inline struct sk_buff *vlan_check_reorder_header(struct sk_buff *skb)
/* Lifted from Gleb's VLAN code... */
memmove(skb->data - ETH_HLEN,
skb->data - VLAN_ETH_HLEN, 12);
skb->mac.raw += VLAN_HLEN;
skb->mac_header += VLAN_HLEN;
}
}

8
net/appletalk/ddp.c
View File

@@ -1383,10 +1383,10 @@ free_it:
* @pt - packet type
*
* Receive a packet (in skb) from device dev. This has come from the SNAP
* decoder, and on entry skb->h.raw is the DDP header, skb->len is the DDP
* header, skb->len is the DDP length. The physical headers have been
* extracted. PPP should probably pass frames marked as for this layer.
* [ie ARPHRD_ETHERTALK]
* decoder, and on entry skb->transport_header is the DDP header, skb->len
* is the DDP header, skb->len is the DDP length. The physical headers
* have been extracted. PPP should probably pass frames marked as for this
* layer. [ie ARPHRD_ETHERTALK]
*/
static int atalk_rcv(struct sk_buff *skb, struct net_device *dev,
struct packet_type *pt, struct net_device *orig_dev)

24
net/bridge/br_netfilter.c
View File

@@ -174,7 +174,7 @@ static int br_nf_pre_routing_finish_ipv6(struct sk_buff *skb)
skb->dev = nf_bridge->physindev;
if (skb->protocol == htons(ETH_P_8021Q)) {
skb_push(skb, VLAN_HLEN);
skb->nh.raw -= VLAN_HLEN;
skb->network_header -= VLAN_HLEN;
}
NF_HOOK_THRESH(PF_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL,
br_handle_frame_finish, 1);
@@ -255,7 +255,7 @@ static int br_nf_pre_routing_finish_bridge(struct sk_buff *skb)
else {
if (skb->protocol == htons(ETH_P_8021Q)) {
skb_pull(skb, VLAN_HLEN);
skb->nh.raw += VLAN_HLEN;
skb->network_header += VLAN_HLEN;
}
skb->dst->output(skb);
}
@@ -325,7 +325,7 @@ bridged_dnat:
if (skb->protocol ==
htons(ETH_P_8021Q)) {
skb_push(skb, VLAN_HLEN);
skb->nh.raw -= VLAN_HLEN;
skb->network_header -= VLAN_HLEN;
}
NF_HOOK_THRESH(PF_BRIDGE, NF_BR_PRE_ROUTING,
skb, skb->dev, NULL,
@@ -344,7 +344,7 @@ bridged_dnat:
skb->dev = nf_bridge->physindev;
if (skb->protocol == htons(ETH_P_8021Q)) {
skb_push(skb, VLAN_HLEN);
skb->nh.raw -= VLAN_HLEN;
skb->network_header -= VLAN_HLEN;
}
NF_HOOK_THRESH(PF_BRIDGE, NF_BR_PRE_ROUTING, skb, skb->dev, NULL,
br_handle_frame_finish, 1);
@@ -497,7 +497,7 @@ static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff **pskb,
if (skb->protocol == htons(ETH_P_8021Q)) {
skb_pull_rcsum(skb, VLAN_HLEN);
skb->nh.raw += VLAN_HLEN;
skb->network_header += VLAN_HLEN;
}
return br_nf_pre_routing_ipv6(hook, skb, in, out, okfn);
}
@@ -514,7 +514,7 @@ static unsigned int br_nf_pre_routing(unsigned int hook, struct sk_buff **pskb,
if (skb->protocol == htons(ETH_P_8021Q)) {
skb_pull_rcsum(skb, VLAN_HLEN);
skb->nh.raw += VLAN_HLEN;
skb->network_header += VLAN_HLEN;
}
if (!pskb_may_pull(skb, sizeof(struct iphdr)))
@@ -595,7 +595,7 @@ static int br_nf_forward_finish(struct sk_buff *skb)
}
if (skb->protocol == htons(ETH_P_8021Q)) {
skb_push(skb, VLAN_HLEN);
skb->nh.raw -= VLAN_HLEN;
skb->network_header -= VLAN_HLEN;
}
NF_HOOK_THRESH(PF_BRIDGE, NF_BR_FORWARD, skb, in,
skb->dev, br_forward_finish, 1);
@@ -631,7 +631,7 @@ static unsigned int br_nf_forward_ip(unsigned int hook, struct sk_buff **pskb,
if (skb->protocol == htons(ETH_P_8021Q)) {
skb_pull(*pskb, VLAN_HLEN);
(*pskb)->nh.raw += VLAN_HLEN;
(*pskb)->network_header += VLAN_HLEN;
}
nf_bridge = skb->nf_bridge;
@@ -667,13 +667,13 @@ static unsigned int br_nf_forward_arp(unsigned int hook, struct sk_buff **pskb,
if (!IS_VLAN_ARP(skb))
return NF_ACCEPT;
skb_pull(*pskb, VLAN_HLEN);
(*pskb)->nh.raw += VLAN_HLEN;
(*pskb)->network_header += VLAN_HLEN;
}
if (arp_hdr(skb)->ar_pln != 4) {
if (IS_VLAN_ARP(skb)) {
skb_push(*pskb, VLAN_HLEN);
(*pskb)->nh.raw -= VLAN_HLEN;
(*pskb)->network_header -= VLAN_HLEN;
}
return NF_ACCEPT;
}
@@ -723,7 +723,7 @@ static unsigned int br_nf_local_out(unsigned int hook, struct sk_buff **pskb,
}
if (skb->protocol == htons(ETH_P_8021Q)) {
skb_push(skb, VLAN_HLEN);
skb->nh.raw -= VLAN_HLEN;
skb->network_header -= VLAN_HLEN;
}
NF_HOOK(PF_BRIDGE, NF_BR_FORWARD, skb, realindev, skb->dev,
@@ -790,7 +790,7 @@ static unsigned int br_nf_post_routing(unsigned int hook, struct sk_buff **pskb,
if (skb->protocol == htons(ETH_P_8021Q)) {
skb_pull(skb, VLAN_HLEN);
skb->nh.raw += VLAN_HLEN;
skb->network_header += VLAN_HLEN;
}
nf_bridge_save_header(skb);

6
net/core/dev.c
View File

@@ -1077,7 +1077,7 @@ static void dev_queue_xmit_nit(struct sk_buff *skb, struct net_device *dev)
skb_reset_network_header(skb2);
}
skb2->h.raw = skb2->nh.raw;
skb2->transport_header = skb2->network_header;
skb2->pkt_type = PACKET_OUTGOING;
ptype->func(skb2, skb->dev, ptype, skb->dev);
}
@@ -1207,7 +1207,7 @@ struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features)
BUG_ON(skb_shinfo(skb)->frag_list);
skb_reset_mac_header(skb);
skb->mac_len = skb->nh.raw - skb->mac.raw;
skb->mac_len = skb->network_header - skb->mac_header;
__skb_pull(skb, skb->mac_len);
if (unlikely(skb->ip_summed != CHECKSUM_PARTIAL)) {
@@ -1774,7 +1774,7 @@ int netif_receive_skb(struct sk_buff *skb)
skb_reset_network_header(skb);
skb_reset_transport_header(skb);
skb->mac_len = skb->nh.raw - skb->mac.raw;
skb->mac_len = skb->network_header - skb->mac_header;
pt_prev = NULL;

16
net/core/pktgen.c
View File

@@ -2358,7 +2358,7 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
}
skb_set_network_header(skb, skb->tail - skb->data);
skb->h.raw = skb->nh.raw + sizeof(struct iphdr);
skb->transport_header = skb->network_header + sizeof(struct iphdr);
skb_put(skb, sizeof(struct iphdr) + sizeof(struct udphdr));
iph = ip_hdr(skb);
@@ -2391,9 +2391,9 @@ static struct sk_buff *fill_packet_ipv4(struct net_device *odev,
iph->check = 0;
iph->check = ip_fast_csum((void *)iph, iph->ihl);
skb->protocol = protocol;
skb->mac.raw = (skb->nh.raw - ETH_HLEN -
pkt_dev->nr_labels * sizeof(u32) -
VLAN_TAG_SIZE(pkt_dev) - SVLAN_TAG_SIZE(pkt_dev));
skb->mac_header = (skb->network_header - ETH_HLEN -
pkt_dev->nr_labels * sizeof(u32) -
VLAN_TAG_SIZE(pkt_dev) - SVLAN_TAG_SIZE(pkt_dev));
skb->dev = odev;
skb->pkt_type = PACKET_HOST;
@@ -2697,7 +2697,7 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
}
skb_set_network_header(skb, skb->tail - skb->data);
skb->h.raw = skb->nh.raw + sizeof(struct ipv6hdr);
skb->transport_header = skb->network_header + sizeof(struct ipv6hdr);
skb_put(skb, sizeof(struct ipv6hdr) + sizeof(struct udphdr));
iph = ipv6_hdr(skb);
@@ -2738,9 +2738,9 @@ static struct sk_buff *fill_packet_ipv6(struct net_device *odev,
ipv6_addr_copy(&iph->daddr, &pkt_dev->cur_in6_daddr);
ipv6_addr_copy(&iph->saddr, &pkt_dev->cur_in6_saddr);
skb->mac.raw = (skb->nh.raw - ETH_HLEN -
pkt_dev->nr_labels * sizeof(u32) -
VLAN_TAG_SIZE(pkt_dev) - SVLAN_TAG_SIZE(pkt_dev));
skb->mac_header = (skb->network_header - ETH_HLEN -
pkt_dev->nr_labels * sizeof(u32) -
VLAN_TAG_SIZE(pkt_dev) - SVLAN_TAG_SIZE(pkt_dev));
skb->protocol = protocol;
skb->dev = odev;
skb->pkt_type = PACKET_HOST;

21
net/core/skbuff.c
View File

@@ -396,9 +396,9 @@ struct sk_buff *skb_clone(struct sk_buff *skb, gfp_t gfp_mask)
n->sk = NULL;
C(tstamp);
C(dev);
C(h);
C(nh);
C(mac);
C(transport_header);
C(network_header);
C(mac_header);
C(dst);
dst_clone(skb->dst);
C(sp);
@@ -461,9 +461,9 @@ static void copy_skb_header(struct sk_buff *new, const struct sk_buff *old)
#ifdef CONFIG_INET
new->sp = secpath_get(old->sp);
#endif
new->h.raw = old->h.raw + offset;
new->nh.raw = old->nh.raw + offset;
new->mac.raw = old->mac.raw + offset;
new->transport_header = old->transport_header + offset;
new->network_header = old->network_header + offset;
new->mac_header = old->mac_header + offset;
memcpy(new->cb, old->cb, sizeof(old->cb));
new->local_df = old->local_df;
new->fclone = SKB_FCLONE_UNAVAILABLE;
@@ -639,9 +639,9 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
skb->end = data + size;
skb->data += off;
skb->tail += off;
skb->mac.raw += off;
skb->h.raw += off;
skb->nh.raw += off;
skb->transport_header += off;
skb->network_header += off;
skb->mac_header += off;
skb->cloned = 0;
skb->nohdr = 0;
atomic_set(&skb_shinfo(skb)->dataref, 1);
@@ -1906,7 +1906,8 @@ struct sk_buff *skb_segment(struct sk_buff *skb, int features)
skb_reserve(nskb, headroom);
skb_reset_mac_header(nskb);
skb_set_network_header(nskb, skb->mac_len);
nskb->h.raw = nskb->nh.raw + skb_network_header_len(skb);
nskb->transport_header = (nskb->network_header +
skb_network_header_len(skb));
memcpy(skb_put(nskb, doffset), skb->data, doffset);
if (!sg) {

2
net/ieee80211/ieee80211_rx.c
View File

@@ -793,7 +793,7 @@ int ieee80211_rx(struct ieee80211_device *ieee, struct sk_buff *skb,
skb2->protocol = __constant_htons(ETH_P_802_3);
skb_reset_mac_header(skb2);
skb_reset_network_header(skb2);
/* skb2->nh.raw += ETH_HLEN; */
/* skb2->network_header += ETH_HLEN; */
dev_queue_xmit(skb2);
}
#endif

4
net/ipv4/ah4.c
View File

@@ -181,9 +181,9 @@ static int ah_input(struct xfrm_state *x, struct sk_buff *skb)
}
}
((struct iphdr*)work_buf)->protocol = ah->nexthdr;
skb->nh.raw += ah_hlen;
skb->network_header += ah_hlen;
memcpy(skb_network_header(skb), work_buf, ihl);
skb->h.raw = skb->nh.raw;
skb->transport_header = skb->network_header;
__skb_pull(skb, ah_hlen + ihl);
return 0;

2
net/ipv4/igmp.c
View File

@@ -333,7 +333,7 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size)
((u8*)&pip[1])[2] = 0;
((u8*)&pip[1])[3] = 0;
skb->h.raw = skb->nh.raw + sizeof(struct iphdr) + 4;
skb->transport_header = skb->network_header + sizeof(struct iphdr) + 4;
skb_put(skb, sizeof(*pig));
pig = igmpv3_report_hdr(skb);
pig->type = IGMPV3_HOST_MEMBERSHIP_REPORT;

2
net/ipv4/ip_gre.c
View File

@@ -828,7 +828,7 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
old_iph = ip_hdr(skb);
}
skb->h.raw = skb->nh.raw;
skb->transport_header = skb->network_header;
skb_push(skb, gre_hlen);
skb_reset_network_header(skb);
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));

11
net/ipv4/ip_output.c
View File

@@ -582,7 +582,7 @@ slow_path:
skb_reserve(skb2, ll_rs);
skb_put(skb2, len + hlen);
skb_reset_network_header(skb2);
skb2->h.raw = skb2->nh.raw + hlen;
skb2->transport_header = skb2->network_header + hlen;
/*
* Charge the memory for the fragment to any owner
@@ -713,7 +713,7 @@ static inline int ip_ufo_append_data(struct sock *sk,
skb_reset_network_header(skb);
/* initialize protocol header pointer */
skb->h.raw = skb->nh.raw + fragheaderlen;
skb->transport_header = skb->network_header + fragheaderlen;
skb->ip_summed = CHECKSUM_PARTIAL;
skb->csum = 0;
@@ -918,7 +918,8 @@ alloc_new_skb:
*/
data = skb_put(skb, fraglen);
skb_set_network_header(skb, exthdrlen);
skb->h.raw = skb->nh.raw + fragheaderlen;
skb->transport_header = (skb->network_header +
fragheaderlen);
data += fragheaderlen;
if (fraggap) {
@@ -1112,8 +1113,8 @@ ssize_t ip_append_page(struct sock *sk, struct page *page,
*/
skb_put(skb, fragheaderlen + fraggap);
skb_reset_network_header(skb);
skb->h.raw = skb->nh.raw + fragheaderlen;
skb->transport_header = (skb->network_header +
fragheaderlen);
if (fraggap) {
skb->csum = skb_copy_and_csum_bits(skb_prev,
maxfraglen,

2
net/ipv4/ipcomp.c
View File

@@ -87,7 +87,7 @@ static int ipcomp_input(struct xfrm_state *x, struct sk_buff *skb)
iph = ip_hdr(skb);
ipch = (void *)skb->data;
iph->protocol = ipch->nexthdr;
skb->h.raw = skb->nh.raw + sizeof(*ipch);
skb->transport_header = skb->network_header + sizeof(*ipch);
__skb_pull(skb, sizeof(*ipch));
err = ipcomp_decompress(x, skb);

4
net/ipv4/ipip.c
View File

@@ -485,7 +485,7 @@ static int ipip_rcv(struct sk_buff *skb)
secpath_reset(skb);
skb->mac.raw = skb->nh.raw;
skb->mac_header = skb->network_header;
skb_reset_network_header(skb);
skb->protocol = htons(ETH_P_IP);
skb->pkt_type = PACKET_HOST;
@@ -617,7 +617,7 @@ static int ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
old_iph = ip_hdr(skb);
}
skb->h.raw = skb->nh.raw;
skb->transport_header = skb->network_header;
skb_push(skb, sizeof(struct iphdr));
skb_reset_network_header(skb);
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));

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