X-Git-Url: http://git.rot13.org/?a=blobdiff_plain;f=net%2Fipv4%2Fip_options.c;h=251346828cb4ceca55d2f3b5622698b4fbd26249;hb=e9195d677d6f06730edd5c2a3fe3283564e39c51;hp=8dabbfc312674bd574df7f69f2a5646146723c18;hpb=1c7da74c4aab595a994beb5fe728ebf0d0b41f59;p=powerpc.git

diff --git a/net/ipv4/ip_options.c b/net/ipv4/ip_options.c
index 8dabbfc312..251346828c 100644
--- a/net/ipv4/ip_options.c
+++ b/net/ipv4/ip_options.c
@@ -8,7 +8,7 @@
  * Version:	$Id: ip_options.c,v 1.21 2001/09/01 00:31:50 davem Exp $
  *
  * Authors:	A.N.Kuznetsov
- *		
+ *
  */
 
 #include <linux/capability.h>
@@ -26,7 +26,7 @@
 #include <net/route.h>
 #include <net/cipso_ipv4.h>
 
-/* 
+/*
  * Write options to IP header, record destination address to
  * source route option, address of outgoing interface
  * (we should already know it, so that this  function is allowed be
@@ -40,7 +40,7 @@
 void ip_options_build(struct sk_buff * skb, struct ip_options * opt,
 			    __be32 daddr, struct rtable *rt, int is_frag)
 {
-	unsigned char * iph = skb->nh.raw;
+	unsigned char *iph = skb_network_header(skb);
 
 	memcpy(&(IPCB(skb)->opt), opt, sizeof(struct ip_options));
 	memcpy(iph+sizeof(struct iphdr), opt->__data, opt->optlen);
@@ -76,7 +76,7 @@ void ip_options_build(struct sk_buff * skb, struct ip_options * opt,
 	}
 }
 
-/* 
+/*
  * Provided (sopt, skb) points to received options,
  * build in dopt compiled option set appropriate for answering.
  * i.e. invert SRR option, copy anothers,
@@ -85,7 +85,7 @@ void ip_options_build(struct sk_buff * skb, struct ip_options * opt,
  * NOTE: dopt cannot point to skb.
  */
 
-int ip_options_echo(struct ip_options * dopt, struct sk_buff * skb) 
+int ip_options_echo(struct ip_options * dopt, struct sk_buff * skb)
 {
 	struct ip_options *sopt;
 	unsigned char *sptr, *dptr;
@@ -104,13 +104,13 @@ int ip_options_echo(struct ip_options * dopt, struct sk_buff * skb)
 		return 0;
 	}
 
-	sptr = skb->nh.raw;
+	sptr = skb_network_header(skb);
 	dptr = dopt->__data;
 
 	if (skb->dst)
 		daddr = ((struct rtable*)skb->dst)->rt_spec_dst;
 	else
-		daddr = skb->nh.iph->daddr;
+		daddr = ip_hdr(skb)->daddr;
 
 	if (sopt->rr) {
 		optlen  = sptr[sopt->rr+1];
@@ -180,7 +180,8 @@ int ip_options_echo(struct ip_options * dopt, struct sk_buff * skb)
 			/*
 			 * RFC1812 requires to fix illegal source routes.
 			 */
-			if (memcmp(&skb->nh.iph->saddr, &start[soffset+3], 4) == 0)
+			if (memcmp(&ip_hdr(skb)->saddr,
+				   &start[soffset + 3], 4) == 0)
 				doffset -= 4;
 		}
 		if (doffset > 3) {
@@ -215,9 +216,9 @@ int ip_options_echo(struct ip_options * dopt, struct sk_buff * skb)
  *	Simple and stupid 8), but the most efficient way.
  */
 
-void ip_options_fragment(struct sk_buff * skb) 
+void ip_options_fragment(struct sk_buff * skb)
 {
-	unsigned char * optptr = skb->nh.raw + sizeof(struct iphdr);
+	unsigned char *optptr = skb_network_header(skb) + sizeof(struct iphdr);
 	struct ip_options * opt = &(IPCB(skb)->opt);
 	int  l = opt->optlen;
 	int  optlen;
@@ -264,12 +265,13 @@ int ip_options_compile(struct ip_options * opt, struct sk_buff * skb)
 
 	if (!opt) {
 		opt = &(IPCB(skb)->opt);
-		iph = skb->nh.raw;
+		iph = skb_network_header(skb);
 		opt->optlen = ((struct iphdr *)iph)->ihl*4 - sizeof(struct iphdr);
 		optptr = iph + sizeof(struct iphdr);
 		opt->is_data = 0;
 	} else {
-		optptr = opt->is_data ? opt->__data : (unsigned char*)&(skb->nh.iph[1]);
+		optptr = opt->is_data ? opt->__data :
+					(unsigned char *)&(ip_hdr(skb)[1]);
 		iph = optptr - sizeof(struct iphdr);
 	}
 
@@ -370,7 +372,7 @@ int ip_options_compile(struct ip_options * opt, struct sk_buff * skb)
 				switch (optptr[3]&0xF) {
 				      case IPOPT_TS_TSONLY:
 					opt->ts = optptr - iph;
-					if (skb) 
+					if (skb)
 						timeptr = (__be32*)&optptr[optptr[2]-1];
 					opt->ts_needtime = 1;
 					optptr[2] += 4;
@@ -443,12 +445,12 @@ int ip_options_compile(struct ip_options * opt, struct sk_buff * skb)
 				opt->router_alert = optptr - iph;
 			break;
 		      case IPOPT_CIPSO:
-		        if (opt->cipso) {
+			if ((!skb && !capable(CAP_NET_RAW)) || opt->cipso) {
 				pp_ptr = optptr;
 				goto error;
 			}
 			opt->cipso = optptr - iph;
-		        if (cipso_v4_validate(&optptr)) {
+			if (cipso_v4_validate(&optptr)) {
 				pp_ptr = optptr;
 				goto error;
 			}
@@ -563,7 +565,7 @@ void ip_forward_options(struct sk_buff *skb)
 	struct   ip_options * opt	= &(IPCB(skb)->opt);
 	unsigned char * optptr;
 	struct rtable *rt = (struct rtable*)skb->dst;
-	unsigned char *raw = skb->nh.raw;
+	unsigned char *raw = skb_network_header(skb);
 
 	if (opt->rr_needaddr) {
 		optptr = (unsigned char *)raw + opt->rr;
@@ -587,7 +589,7 @@ void ip_forward_options(struct sk_buff *skb)
 		if (srrptr + 3 <= srrspace) {
 			opt->is_changed = 1;
 			ip_rt_get_source(&optptr[srrptr-1], rt);
-			skb->nh.iph->daddr = rt->rt_dst;
+			ip_hdr(skb)->daddr = rt->rt_dst;
 			optptr[2] = srrptr+4;
 		} else if (net_ratelimit())
 			printk(KERN_CRIT "ip_forward(): Argh! Destination lost!\n");
@@ -599,7 +601,7 @@ void ip_forward_options(struct sk_buff *skb)
 	}
 	if (opt->is_changed) {
 		opt->is_changed = 0;
-		ip_send_check(skb->nh.iph);
+		ip_send_check(ip_hdr(skb));
 	}
 }
 
@@ -608,8 +610,8 @@ int ip_options_rcv_srr(struct sk_buff *skb)
 	struct ip_options *opt = &(IPCB(skb)->opt);
 	int srrspace, srrptr;
 	__be32 nexthop;
-	struct iphdr *iph = skb->nh.iph;
-	unsigned char * optptr = skb->nh.raw + opt->srr;
+	struct iphdr *iph = ip_hdr(skb);
+	unsigned char *optptr = skb_network_header(skb) + opt->srr;
 	struct rtable *rt = (struct rtable*)skb->dst;
 	struct rtable *rt2;
 	int err;