[IPV4]: encapsulation annotations
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
4806126d78
commit
d5a0a1e310
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@ -19,10 +19,10 @@ struct ip_tunnel_parm
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{
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{
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char name[IFNAMSIZ];
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char name[IFNAMSIZ];
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int link;
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int link;
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__u16 i_flags;
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__be16 i_flags;
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__u16 o_flags;
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__be16 o_flags;
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__u32 i_key;
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__be32 i_key;
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__u32 o_key;
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__be32 o_key;
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struct iphdr iph;
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struct iphdr iph;
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};
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};
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@ -211,8 +211,8 @@ struct xfrm_user_tmpl {
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struct xfrm_encap_tmpl {
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struct xfrm_encap_tmpl {
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__u16 encap_type;
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__u16 encap_type;
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__u16 encap_sport;
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__be16 encap_sport;
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__u16 encap_dport;
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__be16 encap_dport;
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xfrm_address_t encap_oa;
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xfrm_address_t encap_oa;
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};
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};
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@ -14,7 +14,7 @@
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* into IP header for icv calculation. Options are already checked
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* into IP header for icv calculation. Options are already checked
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* for validity, so paranoia is not required. */
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* for validity, so paranoia is not required. */
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static int ip_clear_mutable_options(struct iphdr *iph, u32 *daddr)
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static int ip_clear_mutable_options(struct iphdr *iph, __be32 *daddr)
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{
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{
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unsigned char * optptr = (unsigned char*)(iph+1);
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unsigned char * optptr = (unsigned char*)(iph+1);
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int l = iph->ihl*4 - sizeof(struct iphdr);
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int l = iph->ihl*4 - sizeof(struct iphdr);
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@ -162,7 +162,7 @@ static int ah_input(struct xfrm_state *x, struct sk_buff *skb)
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iph->frag_off = 0;
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iph->frag_off = 0;
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iph->check = 0;
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iph->check = 0;
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if (ihl > sizeof(*iph)) {
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if (ihl > sizeof(*iph)) {
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u32 dummy;
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__be32 dummy;
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if (ip_clear_mutable_options(iph, &dummy))
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if (ip_clear_mutable_options(iph, &dummy))
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goto out;
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goto out;
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}
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}
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@ -67,7 +67,7 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb)
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if (x->encap) {
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if (x->encap) {
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struct xfrm_encap_tmpl *encap = x->encap;
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struct xfrm_encap_tmpl *encap = x->encap;
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struct udphdr *uh;
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struct udphdr *uh;
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u32 *udpdata32;
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__be32 *udpdata32;
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uh = (struct udphdr *)esph;
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uh = (struct udphdr *)esph;
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uh->source = encap->encap_sport;
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uh->source = encap->encap_sport;
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@ -81,7 +81,7 @@ static int esp_output(struct xfrm_state *x, struct sk_buff *skb)
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esph = (struct ip_esp_hdr *)(uh + 1);
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esph = (struct ip_esp_hdr *)(uh + 1);
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break;
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break;
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case UDP_ENCAP_ESPINUDP_NON_IKE:
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case UDP_ENCAP_ESPINUDP_NON_IKE:
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udpdata32 = (u32 *)(uh + 1);
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udpdata32 = (__be32 *)(uh + 1);
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udpdata32[0] = udpdata32[1] = 0;
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udpdata32[0] = udpdata32[1] = 0;
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esph = (struct ip_esp_hdr *)(udpdata32 + 2);
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esph = (struct ip_esp_hdr *)(udpdata32 + 2);
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break;
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break;
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@ -144,7 +144,7 @@ static struct net_device *ipgre_fb_tunnel_dev;
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*/
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*/
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#define HASH_SIZE 16
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#define HASH_SIZE 16
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#define HASH(addr) ((addr^(addr>>4))&0xF)
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#define HASH(addr) (((__force u32)addr^((__force u32)addr>>4))&0xF)
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static struct ip_tunnel *tunnels[4][HASH_SIZE];
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static struct ip_tunnel *tunnels[4][HASH_SIZE];
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@ -157,7 +157,7 @@ static DEFINE_RWLOCK(ipgre_lock);
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/* Given src, dst and key, find appropriate for input tunnel. */
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/* Given src, dst and key, find appropriate for input tunnel. */
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static struct ip_tunnel * ipgre_tunnel_lookup(u32 remote, u32 local, u32 key)
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static struct ip_tunnel * ipgre_tunnel_lookup(__be32 remote, __be32 local, __be32 key)
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{
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{
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unsigned h0 = HASH(remote);
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unsigned h0 = HASH(remote);
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unsigned h1 = HASH(key);
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unsigned h1 = HASH(key);
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@ -194,9 +194,9 @@ static struct ip_tunnel * ipgre_tunnel_lookup(u32 remote, u32 local, u32 key)
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static struct ip_tunnel **ipgre_bucket(struct ip_tunnel *t)
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static struct ip_tunnel **ipgre_bucket(struct ip_tunnel *t)
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{
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{
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u32 remote = t->parms.iph.daddr;
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__be32 remote = t->parms.iph.daddr;
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u32 local = t->parms.iph.saddr;
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__be32 local = t->parms.iph.saddr;
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u32 key = t->parms.i_key;
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__be32 key = t->parms.i_key;
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unsigned h = HASH(key);
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unsigned h = HASH(key);
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int prio = 0;
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int prio = 0;
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@ -236,9 +236,9 @@ static void ipgre_tunnel_unlink(struct ip_tunnel *t)
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static struct ip_tunnel * ipgre_tunnel_locate(struct ip_tunnel_parm *parms, int create)
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static struct ip_tunnel * ipgre_tunnel_locate(struct ip_tunnel_parm *parms, int create)
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{
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{
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u32 remote = parms->iph.daddr;
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__be32 remote = parms->iph.daddr;
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u32 local = parms->iph.saddr;
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__be32 local = parms->iph.saddr;
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u32 key = parms->i_key;
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__be32 key = parms->i_key;
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struct ip_tunnel *t, **tp, *nt;
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struct ip_tunnel *t, **tp, *nt;
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struct net_device *dev;
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struct net_device *dev;
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unsigned h = HASH(key);
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unsigned h = HASH(key);
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@ -319,12 +319,12 @@ static void ipgre_err(struct sk_buff *skb, u32 info)
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*/
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*/
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struct iphdr *iph = (struct iphdr*)skb->data;
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struct iphdr *iph = (struct iphdr*)skb->data;
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u16 *p = (u16*)(skb->data+(iph->ihl<<2));
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__be16 *p = (__be16*)(skb->data+(iph->ihl<<2));
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int grehlen = (iph->ihl<<2) + 4;
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int grehlen = (iph->ihl<<2) + 4;
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int type = skb->h.icmph->type;
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int type = skb->h.icmph->type;
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int code = skb->h.icmph->code;
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int code = skb->h.icmph->code;
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struct ip_tunnel *t;
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struct ip_tunnel *t;
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u16 flags;
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__be16 flags;
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flags = p[0];
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flags = p[0];
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if (flags&(GRE_CSUM|GRE_KEY|GRE_SEQ|GRE_ROUTING|GRE_VERSION)) {
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if (flags&(GRE_CSUM|GRE_KEY|GRE_SEQ|GRE_ROUTING|GRE_VERSION)) {
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@ -370,7 +370,7 @@ static void ipgre_err(struct sk_buff *skb, u32 info)
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}
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}
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read_lock(&ipgre_lock);
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read_lock(&ipgre_lock);
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t = ipgre_tunnel_lookup(iph->daddr, iph->saddr, (flags&GRE_KEY) ? *(((u32*)p) + (grehlen>>2) - 1) : 0);
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t = ipgre_tunnel_lookup(iph->daddr, iph->saddr, (flags&GRE_KEY) ? *(((__be32*)p) + (grehlen>>2) - 1) : 0);
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if (t == NULL || t->parms.iph.daddr == 0 || MULTICAST(t->parms.iph.daddr))
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if (t == NULL || t->parms.iph.daddr == 0 || MULTICAST(t->parms.iph.daddr))
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goto out;
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goto out;
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@ -388,14 +388,14 @@ out:
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#else
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#else
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struct iphdr *iph = (struct iphdr*)dp;
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struct iphdr *iph = (struct iphdr*)dp;
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struct iphdr *eiph;
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struct iphdr *eiph;
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u16 *p = (u16*)(dp+(iph->ihl<<2));
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__be16 *p = (__be16*)(dp+(iph->ihl<<2));
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int type = skb->h.icmph->type;
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int type = skb->h.icmph->type;
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int code = skb->h.icmph->code;
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int code = skb->h.icmph->code;
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int rel_type = 0;
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int rel_type = 0;
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int rel_code = 0;
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int rel_code = 0;
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__be32 rel_info = 0;
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__be32 rel_info = 0;
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__u32 n = 0;
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__u32 n = 0;
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u16 flags;
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__be16 flags;
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int grehlen = (iph->ihl<<2) + 4;
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int grehlen = (iph->ihl<<2) + 4;
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struct sk_buff *skb2;
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struct sk_buff *skb2;
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struct flowi fl;
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struct flowi fl;
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@ -556,9 +556,9 @@ static int ipgre_rcv(struct sk_buff *skb)
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{
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{
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struct iphdr *iph;
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struct iphdr *iph;
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u8 *h;
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u8 *h;
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u16 flags;
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__be16 flags;
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u16 csum = 0;
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u16 csum = 0;
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u32 key = 0;
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__be32 key = 0;
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u32 seqno = 0;
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u32 seqno = 0;
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struct ip_tunnel *tunnel;
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struct ip_tunnel *tunnel;
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int offset = 4;
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int offset = 4;
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@ -568,7 +568,7 @@ static int ipgre_rcv(struct sk_buff *skb)
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iph = skb->nh.iph;
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iph = skb->nh.iph;
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h = skb->data;
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h = skb->data;
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flags = *(u16*)h;
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flags = *(__be16*)h;
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if (flags&(GRE_CSUM|GRE_KEY|GRE_ROUTING|GRE_SEQ|GRE_VERSION)) {
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if (flags&(GRE_CSUM|GRE_KEY|GRE_ROUTING|GRE_SEQ|GRE_VERSION)) {
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/* - Version must be 0.
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/* - Version must be 0.
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@ -592,11 +592,11 @@ static int ipgre_rcv(struct sk_buff *skb)
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offset += 4;
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offset += 4;
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}
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}
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if (flags&GRE_KEY) {
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if (flags&GRE_KEY) {
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key = *(u32*)(h + offset);
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key = *(__be32*)(h + offset);
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offset += 4;
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offset += 4;
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}
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}
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if (flags&GRE_SEQ) {
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if (flags&GRE_SEQ) {
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seqno = ntohl(*(u32*)(h + offset));
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seqno = ntohl(*(__be32*)(h + offset));
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offset += 4;
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offset += 4;
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}
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}
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}
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}
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@ -605,7 +605,7 @@ static int ipgre_rcv(struct sk_buff *skb)
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if ((tunnel = ipgre_tunnel_lookup(iph->saddr, iph->daddr, key)) != NULL) {
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if ((tunnel = ipgre_tunnel_lookup(iph->saddr, iph->daddr, key)) != NULL) {
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secpath_reset(skb);
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secpath_reset(skb);
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skb->protocol = *(u16*)(h + 2);
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skb->protocol = *(__be16*)(h + 2);
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/* WCCP version 1 and 2 protocol decoding.
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/* WCCP version 1 and 2 protocol decoding.
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* - Change protocol to IP
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* - Change protocol to IP
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* - When dealing with WCCPv2, Skip extra 4 bytes in GRE header
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* - When dealing with WCCPv2, Skip extra 4 bytes in GRE header
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@ -673,13 +673,13 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
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struct iphdr *old_iph = skb->nh.iph;
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struct iphdr *old_iph = skb->nh.iph;
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struct iphdr *tiph;
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struct iphdr *tiph;
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u8 tos;
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u8 tos;
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u16 df;
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__be16 df;
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struct rtable *rt; /* Route to the other host */
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struct rtable *rt; /* Route to the other host */
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struct net_device *tdev; /* Device to other host */
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struct net_device *tdev; /* Device to other host */
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struct iphdr *iph; /* Our new IP header */
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struct iphdr *iph; /* Our new IP header */
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int max_headroom; /* The extra header space needed */
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int max_headroom; /* The extra header space needed */
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int gre_hlen;
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int gre_hlen;
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u32 dst;
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__be32 dst;
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int mtu;
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int mtu;
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if (tunnel->recursion++) {
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if (tunnel->recursion++) {
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@ -860,11 +860,11 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
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iph->ttl = dst_metric(&rt->u.dst, RTAX_HOPLIMIT);
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iph->ttl = dst_metric(&rt->u.dst, RTAX_HOPLIMIT);
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}
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}
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((u16*)(iph+1))[0] = tunnel->parms.o_flags;
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((__be16*)(iph+1))[0] = tunnel->parms.o_flags;
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((u16*)(iph+1))[1] = skb->protocol;
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((__be16*)(iph+1))[1] = skb->protocol;
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if (tunnel->parms.o_flags&(GRE_KEY|GRE_CSUM|GRE_SEQ)) {
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if (tunnel->parms.o_flags&(GRE_KEY|GRE_CSUM|GRE_SEQ)) {
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u32 *ptr = (u32*)(((u8*)iph) + tunnel->hlen - 4);
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__be32 *ptr = (__be32*)(((u8*)iph) + tunnel->hlen - 4);
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if (tunnel->parms.o_flags&GRE_SEQ) {
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if (tunnel->parms.o_flags&GRE_SEQ) {
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++tunnel->o_seqno;
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++tunnel->o_seqno;
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@ -877,7 +877,7 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
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}
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}
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if (tunnel->parms.o_flags&GRE_CSUM) {
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if (tunnel->parms.o_flags&GRE_CSUM) {
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*ptr = 0;
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*ptr = 0;
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*(__u16*)ptr = ip_compute_csum((void*)(iph+1), skb->len - sizeof(struct iphdr));
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*(__be16*)ptr = ip_compute_csum((void*)(iph+1), skb->len - sizeof(struct iphdr));
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}
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}
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}
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}
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@ -1068,7 +1068,7 @@ static int ipgre_header(struct sk_buff *skb, struct net_device *dev, unsigned sh
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{
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{
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struct ip_tunnel *t = netdev_priv(dev);
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struct ip_tunnel *t = netdev_priv(dev);
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struct iphdr *iph = (struct iphdr *)skb_push(skb, t->hlen);
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struct iphdr *iph = (struct iphdr *)skb_push(skb, t->hlen);
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u16 *p = (u16*)(iph+1);
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__be16 *p = (__be16*)(iph+1);
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memcpy(iph, &t->parms.iph, sizeof(struct iphdr));
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memcpy(iph, &t->parms.iph, sizeof(struct iphdr));
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p[0] = t->parms.o_flags;
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p[0] = t->parms.o_flags;
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@ -118,7 +118,7 @@
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#include <net/xfrm.h>
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#include <net/xfrm.h>
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#define HASH_SIZE 16
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#define HASH_SIZE 16
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#define HASH(addr) ((addr^(addr>>4))&0xF)
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#define HASH(addr) (((__force u32)addr^((__force u32)addr>>4))&0xF)
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static int ipip_fb_tunnel_init(struct net_device *dev);
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static int ipip_fb_tunnel_init(struct net_device *dev);
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static int ipip_tunnel_init(struct net_device *dev);
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static int ipip_tunnel_init(struct net_device *dev);
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@ -134,7 +134,7 @@ static struct ip_tunnel **tunnels[4] = { tunnels_wc, tunnels_l, tunnels_r, tunne
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static DEFINE_RWLOCK(ipip_lock);
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static DEFINE_RWLOCK(ipip_lock);
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static struct ip_tunnel * ipip_tunnel_lookup(u32 remote, u32 local)
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static struct ip_tunnel * ipip_tunnel_lookup(__be32 remote, __be32 local)
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{
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{
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unsigned h0 = HASH(remote);
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unsigned h0 = HASH(remote);
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unsigned h1 = HASH(local);
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unsigned h1 = HASH(local);
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@ -160,8 +160,8 @@ static struct ip_tunnel * ipip_tunnel_lookup(u32 remote, u32 local)
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static struct ip_tunnel **ipip_bucket(struct ip_tunnel *t)
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static struct ip_tunnel **ipip_bucket(struct ip_tunnel *t)
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{
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{
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u32 remote = t->parms.iph.daddr;
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__be32 remote = t->parms.iph.daddr;
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u32 local = t->parms.iph.saddr;
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__be32 local = t->parms.iph.saddr;
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unsigned h = 0;
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unsigned h = 0;
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int prio = 0;
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int prio = 0;
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@ -203,8 +203,8 @@ static void ipip_tunnel_link(struct ip_tunnel *t)
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static struct ip_tunnel * ipip_tunnel_locate(struct ip_tunnel_parm *parms, int create)
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static struct ip_tunnel * ipip_tunnel_locate(struct ip_tunnel_parm *parms, int create)
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{
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{
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u32 remote = parms->iph.daddr;
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__be32 remote = parms->iph.daddr;
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u32 local = parms->iph.saddr;
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__be32 local = parms->iph.saddr;
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struct ip_tunnel *t, **tp, *nt;
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struct ip_tunnel *t, **tp, *nt;
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struct net_device *dev;
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struct net_device *dev;
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unsigned h = 0;
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unsigned h = 0;
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@ -519,13 +519,13 @@ static int ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
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struct net_device_stats *stats = &tunnel->stat;
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struct net_device_stats *stats = &tunnel->stat;
|
||||||
struct iphdr *tiph = &tunnel->parms.iph;
|
struct iphdr *tiph = &tunnel->parms.iph;
|
||||||
u8 tos = tunnel->parms.iph.tos;
|
u8 tos = tunnel->parms.iph.tos;
|
||||||
u16 df = tiph->frag_off;
|
__be16 df = tiph->frag_off;
|
||||||
struct rtable *rt; /* Route to the other host */
|
struct rtable *rt; /* Route to the other host */
|
||||||
struct net_device *tdev; /* Device to other host */
|
struct net_device *tdev; /* Device to other host */
|
||||||
struct iphdr *old_iph = skb->nh.iph;
|
struct iphdr *old_iph = skb->nh.iph;
|
||||||
struct iphdr *iph; /* Our new IP header */
|
struct iphdr *iph; /* Our new IP header */
|
||||||
int max_headroom; /* The extra header space needed */
|
int max_headroom; /* The extra header space needed */
|
||||||
u32 dst = tiph->daddr;
|
__be32 dst = tiph->daddr;
|
||||||
int mtu;
|
int mtu;
|
||||||
|
|
||||||
if (tunnel->recursion++) {
|
if (tunnel->recursion++) {
|
||||||
|
|
Loading…
Reference in New Issue