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[SK_BUFF]: Introduce ip_hdr(), remove skb->nh.iph

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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
2007-04-20 22:47:35 -07:00
committed by David S. Miller
parent e023dd6437
commit eddc9ec53b
132 changed files with 565 additions and 564 deletions
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55
net/ipv4/ipmr.c
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@@ -303,7 +303,7 @@ static void ipmr_destroy_unres(struct mfc_cache *c)
atomic_dec(&cache_resolve_queue_len);
while ((skb=skb_dequeue(&c->mfc_un.unres.unresolved))) {
if (skb->nh.iph->version == 0) {
if (ip_hdr(skb)->version == 0) {
struct nlmsghdr *nlh = (struct nlmsghdr *)skb_pull(skb, sizeof(struct iphdr));
nlh->nlmsg_type = NLMSG_ERROR;
nlh->nlmsg_len = NLMSG_LENGTH(sizeof(struct nlmsgerr));
@@ -509,7 +509,7 @@ static void ipmr_cache_resolve(struct mfc_cache *uc, struct mfc_cache *c)
*/
while ((skb=__skb_dequeue(&uc->mfc_un.unres.unresolved))) {
if (skb->nh.iph->version == 0) {
if (ip_hdr(skb)->version == 0) {
struct nlmsghdr *nlh = (struct nlmsghdr *)skb_pull(skb, sizeof(struct iphdr));
if (ipmr_fill_mroute(skb, c, NLMSG_DATA(nlh)) > 0) {
@@ -569,8 +569,9 @@ static int ipmr_cache_report(struct sk_buff *pkt, vifi_t vifi, int assert)
msg->im_msgtype = IGMPMSG_WHOLEPKT;
msg->im_mbz = 0;
msg->im_vif = reg_vif_num;
skb->nh.iph->ihl = sizeof(struct iphdr) >> 2;
skb->nh.iph->tot_len = htons(ntohs(pkt->nh.iph->tot_len) + sizeof(struct iphdr));
ip_hdr(skb)->ihl = sizeof(struct iphdr) >> 2;
ip_hdr(skb)->tot_len = htons(ntohs(ip_hdr(pkt)->tot_len) +
sizeof(struct iphdr));
} else
#endif
{
@@ -579,10 +580,10 @@ static int ipmr_cache_report(struct sk_buff *pkt, vifi_t vifi, int assert)
* Copy the IP header
*/
skb->nh.iph = (struct iphdr *)skb_put(skb, ihl);
skb->nh.raw = skb_put(skb, ihl);
memcpy(skb->data,pkt->data,ihl);
skb->nh.iph->protocol = 0; /* Flag to the kernel this is a route add */
msg = (struct igmpmsg*)skb->nh.iph;
ip_hdr(skb)->protocol = 0; /* Flag to the kernel this is a route add */
msg = (struct igmpmsg *)skb_network_header(skb);
msg->im_vif = vifi;
skb->dst = dst_clone(pkt->dst);
@@ -594,7 +595,7 @@ static int ipmr_cache_report(struct sk_buff *pkt, vifi_t vifi, int assert)
igmp->type =
msg->im_msgtype = assert;
igmp->code = 0;
skb->nh.iph->tot_len=htons(skb->len); /* Fix the length */
ip_hdr(skb)->tot_len = htons(skb->len); /* Fix the length */
skb->h.raw = skb->nh.raw;
}
@@ -624,11 +625,12 @@ ipmr_cache_unresolved(vifi_t vifi, struct sk_buff *skb)
{
int err;
struct mfc_cache *c;
const struct iphdr *iph = ip_hdr(skb);
spin_lock_bh(&mfc_unres_lock);
for (c=mfc_unres_queue; c; c=c->next) {
if (c->mfc_mcastgrp == skb->nh.iph->daddr &&
c->mfc_origin == skb->nh.iph->saddr)
if (c->mfc_mcastgrp == iph->daddr &&
c->mfc_origin == iph->saddr)
break;
}
@@ -648,9 +650,9 @@ ipmr_cache_unresolved(vifi_t vifi, struct sk_buff *skb)
/*
* Fill in the new cache entry
*/
c->mfc_parent=-1;
c->mfc_origin=skb->nh.iph->saddr;
c->mfc_mcastgrp=skb->nh.iph->daddr;
c->mfc_parent = -1;
c->mfc_origin = iph->saddr;
c->mfc_mcastgrp = iph->daddr;
/*
* Reflect first query at mrouted.
@@ -1096,12 +1098,12 @@ static struct notifier_block ip_mr_notifier={
static void ip_encap(struct sk_buff *skb, __be32 saddr, __be32 daddr)
{
struct iphdr *iph;
struct iphdr *old_iph = skb->nh.iph;
struct iphdr *old_iph = ip_hdr(skb);
skb_push(skb, sizeof(struct iphdr));
skb->h.ipiph = skb->nh.iph;
skb->h.raw = skb->nh.raw;
skb_reset_network_header(skb);
iph = skb->nh.iph;
iph = ip_hdr(skb);
iph->version = 4;
iph->tos = old_iph->tos;
@@ -1137,7 +1139,7 @@ static inline int ipmr_forward_finish(struct sk_buff *skb)
static void ipmr_queue_xmit(struct sk_buff *skb, struct mfc_cache *c, int vifi)
{
struct iphdr *iph = skb->nh.iph;
const struct iphdr *iph = ip_hdr(skb);
struct vif_device *vif = &vif_table[vifi];
struct net_device *dev;
struct rtable *rt;
@@ -1203,8 +1205,7 @@ static void ipmr_queue_xmit(struct sk_buff *skb, struct mfc_cache *c, int vifi)
dst_release(skb->dst);
skb->dst = &rt->u.dst;
iph = skb->nh.iph;
ip_decrease_ttl(iph);
ip_decrease_ttl(ip_hdr(skb));
/* FIXME: forward and output firewalls used to be called here.
* What do we do with netfilter? -- RR */
@@ -1304,7 +1305,7 @@ static int ip_mr_forward(struct sk_buff *skb, struct mfc_cache *cache, int local
* Forward the frame
*/
for (ct = cache->mfc_un.res.maxvif-1; ct >= cache->mfc_un.res.minvif; ct--) {
if (skb->nh.iph->ttl > cache->mfc_un.res.ttls[ct]) {
if (ip_hdr(skb)->ttl > cache->mfc_un.res.ttls[ct]) {
if (psend != -1) {
struct sk_buff *skb2 = skb_clone(skb, GFP_ATOMIC);
if (skb2)
@@ -1350,7 +1351,7 @@ int ip_mr_input(struct sk_buff *skb)
if (IPCB(skb)->opt.router_alert) {
if (ip_call_ra_chain(skb))
return 0;
} else if (skb->nh.iph->protocol == IPPROTO_IGMP){
} else if (ip_hdr(skb)->protocol == IPPROTO_IGMP){
/* IGMPv1 (and broken IGMPv2 implementations sort of
Cisco IOS <= 11.2(8)) do not put router alert
option to IGMP packets destined to routable
@@ -1369,7 +1370,7 @@ int ip_mr_input(struct sk_buff *skb)
}
read_lock(&mrt_lock);
cache = ipmr_cache_find(skb->nh.iph->saddr, skb->nh.iph->daddr);
cache = ipmr_cache_find(ip_hdr(skb)->saddr, ip_hdr(skb)->daddr);
/*
* No usable cache entry
@@ -1580,6 +1581,7 @@ int ipmr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait)
if (cache==NULL) {
struct sk_buff *skb2;
struct iphdr *iph;
struct net_device *dev;
int vif;
@@ -1601,10 +1603,11 @@ int ipmr_get_route(struct sk_buff *skb, struct rtmsg *rtm, int nowait)
skb_push(skb2, sizeof(struct iphdr));
skb_reset_network_header(skb2);
skb2->nh.iph->ihl = sizeof(struct iphdr)>>2;
skb2->nh.iph->saddr = rt->rt_src;
skb2->nh.iph->daddr = rt->rt_dst;
skb2->nh.iph->version = 0;
iph = ip_hdr(skb2);
iph->ihl = sizeof(struct iphdr) >> 2;
iph->saddr = rt->rt_src;
iph->daddr = rt->rt_dst;
iph->version = 0;
err = ipmr_cache_unresolved(vif, skb2);
read_unlock(&mrt_lock);
return err;