Merge master.kernel.org:/pub/scm/linux/kernel/git/davej/cpufreq

[pandora-kernel.git] / net / ipv6 / ipcomp6.c

diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c
index 4863643..a81e9e9 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;
 };
 
@@ -65,38 +64,25 @@ static LIST_HEAD(ipcomp6_tfms_list);
 
 static int ipcomp6_input(struct xfrm_state *x, struct sk_buff *skb)
 {
-       int err = 0;
-       u8 nexthdr = 0;
-       int hdr_len = skb->h.raw - skb->nh.raw;
-       unsigned char *tmp_hdr = NULL;
+       int err = -ENOMEM;
        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_is_nonlinear(skb) || skb_cloned(skb)) &&
-               skb_linearize(skb, GFP_ATOMIC) != 0) {
-               err = -ENOMEM;
+       if (skb_linearize_cow(skb))
                goto out;
-       }
 
        skb->ip_summed = CHECKSUM_NONE;
 
        /* 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;
@@ -123,20 +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;
 }
 
@@ -149,7 +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;
@@ -159,10 +139,8 @@ static int ipcomp6_output(struct xfrm_state *x, struct sk_buff *skb)
                goto out_ok;
        }
 
-       if ((skb_is_nonlinear(skb) || skb_cloned(skb)) &&
-               skb_linearize(skb, GFP_ATOMIC) != 0) {
+       if (skb_linearize_cow(skb))
                goto out_ok;
-       }
 
        /* compression */
        plen = skb->len - hdr_len;
@@ -323,7 +301,7 @@ 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;
@@ -345,28 +323,28 @@ 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;
                }
@@ -380,12 +358,13 @@ 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;