linux 2.6.16.38 w/ vs2.0.3-rc1

[linux-2.6.git] / net / ipv6 / esp6.c

diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index a278d5e..7b5b94f 100644 (file)
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -24,6 +24,7 @@
  *     This file is derived from net/ipv4/esp.c
  */
 
+#include <linux/config.h>
 #include <linux/module.h>
 #include <net/ip.h>
 #include <net/xfrm.h>
@@ -93,7 +94,6 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
 
        esph->spi = x->id.spi;
        esph->seq_no = htonl(++x->replay.oseq);
-       xfrm_aevent_doreplay(x);
 
        if (esp->conf.ivlen)
                crypto_cipher_set_iv(tfm, esp->conf.ivec, crypto_tfm_alg_ivsize(tfm));
@@ -129,7 +129,7 @@ error:
        return err;
 }
 
-static int esp6_input(struct xfrm_state *x, struct sk_buff *skb)
+static int esp6_input(struct xfrm_state *x, struct xfrm_decap_state *decap, struct sk_buff *skb)
 {
        struct ipv6hdr *iph;
        struct ipv6_esp_hdr *esph;
@@ -141,17 +141,25 @@ static int esp6_input(struct xfrm_state *x, struct sk_buff *skb)
 
        int hdr_len = skb->h.raw - skb->nh.raw;
        int nfrags;
+       unsigned char *tmp_hdr = NULL;
        int ret = 0;
 
        if (!pskb_may_pull(skb, sizeof(struct ipv6_esp_hdr))) {
                ret = -EINVAL;
-               goto out;
+               goto out_nofree;
        }
 
        if (elen <= 0 || (elen & (blksize-1))) {
                ret = -EINVAL;
-               goto out;
+               goto out_nofree;
+       }
+
+       tmp_hdr = kmalloc(hdr_len, GFP_ATOMIC);
+       if (!tmp_hdr) {
+               ret = -ENOMEM;
+               goto out_nofree;
        }
+       memcpy(tmp_hdr, skb->nh.raw, hdr_len);
 
        /* If integrity check is required, do this. */
         if (esp->auth.icv_full_len) {
@@ -213,12 +221,16 @@ static int esp6_input(struct xfrm_state *x, struct sk_buff *skb)
                /* ... check padding bits here. Silly. :-) */ 
 
                pskb_trim(skb, skb->len - alen - padlen - 2);
+               skb->h.raw = skb_pull(skb, sizeof(struct ipv6_esp_hdr) + esp->conf.ivlen);
+               skb->nh.raw += sizeof(struct ipv6_esp_hdr) + esp->conf.ivlen;
+               memcpy(skb->nh.raw, tmp_hdr, hdr_len);
+               skb->nh.ipv6h->payload_len = htons(skb->len - sizeof(struct ipv6hdr));
                ret = nexthdr[1];
        }
 
-       skb->h.raw = __skb_pull(skb, sizeof(*esph) + esp->conf.ivlen) - hdr_len;
-
 out:
+       kfree(tmp_hdr);
+out_nofree:
        return ret;
 }
 
@@ -292,10 +304,12 @@ static int esp6_init_state(struct xfrm_state *x)
        if (x->encap)
                goto error;
 
-       esp = kzalloc(sizeof(*esp), GFP_KERNEL);
+       esp = kmalloc(sizeof(*esp), GFP_KERNEL);
        if (esp == NULL)
                return -ENOMEM;
 
+       memset(esp, 0, sizeof(*esp));
+
        if (x->aalg) {
                struct xfrm_algo_desc *aalg_desc;