fedora core 6 1.2949 + vserver 2.2.0

[linux-2.6.git] / net / ipv6 / ipcomp6.c

diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c
index 96cac9a..511730b 100644 (file)
--- a/net/ipv6/ipcomp6.c
+++ b/net/ipv6/ipcomp6.c
@@ -30,7 +30,6 @@
  *  The decompression of IP datagram MUST be done after the reassembly, 
  *  AH/ESP processing.
  */
-#include <linux/config.h>
 #include <linux/module.h>
 #include <net/ip.h>
 #include <net/xfrm.h>
@@ -54,7 +53,7 @@
 
 struct ipcomp6_tfms {
        struct list_head list;
-       struct crypto_tfm **tfms;
+       struct crypto_comp **tfms;
        int users;
 };
 
@@ -66,14 +65,12 @@ static LIST_HEAD(ipcomp6_tfms_list);
 static int ipcomp6_input(struct xfrm_state *x, struct sk_buff *skb)
 {
        int err = -ENOMEM;
-       u8 nexthdr = 0;
-       int hdr_len = skb->h.raw - skb->nh.raw;
-       unsigned char *tmp_hdr = NULL;
        struct ipv6hdr *iph;
+       struct ipv6_comp_hdr *ipch;
        int plen, dlen;
        struct ipcomp_data *ipcd = x->data;
        u8 *start, *scratch;
-       struct crypto_tfm *tfm;
+       struct crypto_comp *tfm;
        int cpu;
 
        if (skb_linearize_cow(skb))
@@ -83,17 +80,9 @@ static int ipcomp6_input(struct xfrm_state *x, struct sk_buff *skb)
 
        /* Remove ipcomp header and decompress original payload */
        iph = skb->nh.ipv6h;
-       tmp_hdr = kmalloc(hdr_len, GFP_ATOMIC);
-       if (!tmp_hdr)
-               goto out;
-       memcpy(tmp_hdr, iph, hdr_len);
-       nexthdr = *(u8 *)skb->data;
-       skb_pull(skb, sizeof(struct ipv6_comp_hdr)); 
-       skb->nh.raw += sizeof(struct ipv6_comp_hdr);
-       memcpy(skb->nh.raw, tmp_hdr, hdr_len);
-       iph = skb->nh.ipv6h;
-       iph->payload_len = htons(ntohs(iph->payload_len) - sizeof(struct ipv6_comp_hdr));
-       skb->h.raw = skb->data;
+       ipch = (void *)skb->data;
+       skb->h.raw = skb->nh.raw + sizeof(*ipch);
+       __skb_pull(skb, sizeof(*ipch));
 
        /* decompression */
        plen = skb->len;
@@ -120,20 +109,14 @@ static int ipcomp6_input(struct xfrm_state *x, struct sk_buff *skb)
                goto out_put_cpu;
        }
 
-       skb_put(skb, dlen - plen);
+       skb->truesize += dlen - plen;
+       __skb_put(skb, dlen - plen);
        memcpy(skb->data, scratch, dlen);
+       err = ipch->nexthdr;
 
-       iph = skb->nh.ipv6h;
-       iph->payload_len = htons(skb->len);
-       
 out_put_cpu:
        put_cpu();
 out:
-       kfree(tmp_hdr);
-       if (err)
-               goto error_out;
-       return nexthdr;
-error_out:
        return err;
 }
 
@@ -146,7 +129,7 @@ static int ipcomp6_output(struct xfrm_state *x, struct sk_buff *skb)
        struct ipcomp_data *ipcd = x->data;
        int plen, dlen;
        u8 *start, *scratch;
-       struct crypto_tfm *tfm;
+       struct crypto_comp *tfm;
        int cpu;
 
        hdr_len = skb->h.raw - skb->data;
@@ -193,9 +176,9 @@ out_ok:
 }
 
 static void ipcomp6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
-                               int type, int code, int offset, __u32 info)
+                               int type, int code, int offset, __be32 info)
 {
-       u32 spi;
+       __be32 spi;
        struct ipv6hdr *iph = (struct ipv6hdr*)skb->data;
        struct ipv6_comp_hdr *ipcomph = (struct ipv6_comp_hdr*)(skb->data+offset);
        struct xfrm_state *x;
@@ -216,6 +199,7 @@ static void ipcomp6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
 static struct xfrm_state *ipcomp6_tunnel_create(struct xfrm_state *x)
 {
        struct xfrm_state *t = NULL;
+       u8 mode = XFRM_MODE_TUNNEL;
 
        t = xfrm_state_alloc();
        if (!t)
@@ -229,7 +213,9 @@ static struct xfrm_state *ipcomp6_tunnel_create(struct xfrm_state *x)
        memcpy(t->id.daddr.a6, x->id.daddr.a6, sizeof(struct in6_addr));
        memcpy(&t->sel, &x->sel, sizeof(t->sel));
        t->props.family = AF_INET6;
-       t->props.mode = 1;
+       if (x->props.mode == XFRM_MODE_BEET)
+               mode = x->props.mode;
+       t->props.mode = mode;
        memcpy(t->props.saddr.a6, x->props.saddr.a6, sizeof(struct in6_addr));
 
        if (xfrm_init_state(t))
@@ -251,7 +237,7 @@ static int ipcomp6_tunnel_attach(struct xfrm_state *x)
 {
        int err = 0;
        struct xfrm_state *t = NULL;
-       u32 spi;
+       __be32 spi;
 
        spi = xfrm6_tunnel_spi_lookup((xfrm_address_t *)&x->props.saddr);
        if (spi)
@@ -318,7 +304,7 @@ static void **ipcomp6_alloc_scratches(void)
        return scratches;
 }
 
-static void ipcomp6_free_tfms(struct crypto_tfm **tfms)
+static void ipcomp6_free_tfms(struct crypto_comp **tfms)
 {
        struct ipcomp6_tfms *pos;
        int cpu;
@@ -340,28 +326,28 @@ static void ipcomp6_free_tfms(struct crypto_tfm **tfms)
                return;
 
        for_each_possible_cpu(cpu) {
-               struct crypto_tfm *tfm = *per_cpu_ptr(tfms, cpu);
-               crypto_free_tfm(tfm);
+               struct crypto_comp *tfm = *per_cpu_ptr(tfms, cpu);
+               crypto_free_comp(tfm);
        }
        free_percpu(tfms);
 }
 
-static struct crypto_tfm **ipcomp6_alloc_tfms(const char *alg_name)
+static struct crypto_comp **ipcomp6_alloc_tfms(const char *alg_name)
 {
        struct ipcomp6_tfms *pos;
-       struct crypto_tfm **tfms;
+       struct crypto_comp **tfms;
        int cpu;
 
        /* This can be any valid CPU ID so we don't need locking. */
        cpu = raw_smp_processor_id();
 
        list_for_each_entry(pos, &ipcomp6_tfms_list, list) {
-               struct crypto_tfm *tfm;
+               struct crypto_comp *tfm;
 
                tfms = pos->tfms;
                tfm = *per_cpu_ptr(tfms, cpu);
 
-               if (!strcmp(crypto_tfm_alg_name(tfm), alg_name)) {
+               if (!strcmp(crypto_comp_name(tfm), alg_name)) {
                        pos->users++;
                        return tfms;
                }
@@ -375,12 +361,13 @@ static struct crypto_tfm **ipcomp6_alloc_tfms(const char *alg_name)
        INIT_LIST_HEAD(&pos->list);
        list_add(&pos->list, &ipcomp6_tfms_list);
 
-       pos->tfms = tfms = alloc_percpu(struct crypto_tfm *);
+       pos->tfms = tfms = alloc_percpu(struct crypto_comp *);
        if (!tfms)
                goto error;
 
        for_each_possible_cpu(cpu) {
-               struct crypto_tfm *tfm = crypto_alloc_tfm(alg_name, 0);
+               struct crypto_comp *tfm = crypto_alloc_comp(alg_name, 0,
+                                                           CRYPTO_ALG_ASYNC);
                if (!tfm)
                        goto error;
                *per_cpu_ptr(tfms, cpu) = tfm;
@@ -433,7 +420,7 @@ static int ipcomp6_init_state(struct xfrm_state *x)
                goto out;
 
        x->props.header_len = 0;
-       if (x->props.mode)
+       if (x->props.mode == XFRM_MODE_TUNNEL)
                x->props.header_len += sizeof(struct ipv6hdr);
        
        mutex_lock(&ipcomp6_resource_mutex);
@@ -445,7 +432,7 @@ static int ipcomp6_init_state(struct xfrm_state *x)
                goto error;
        mutex_unlock(&ipcomp6_resource_mutex);
 
-       if (x->props.mode) {
+       if (x->props.mode == XFRM_MODE_TUNNEL) {
                err = ipcomp6_tunnel_attach(x);
                if (err)
                        goto error_tunnel;
@@ -477,6 +464,7 @@ static struct xfrm_type ipcomp6_type =
        .destructor     = ipcomp6_destroy,
        .input          = ipcomp6_input,
        .output         = ipcomp6_output,
+       .hdr_offset     = xfrm6_find_1stfragopt,
 };
 
 static struct inet6_protocol ipcomp6_protocol =