summaryrefslogtreecommitdiffstats
path: root/net/ipv6
diff options
context:
space:
mode:
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/ah6.c1
-rw-r--r--net/ipv6/esp6.c9
-rw-r--r--net/ipv6/ipcomp6.c5
-rw-r--r--net/ipv6/mip6.c2
-rw-r--r--net/ipv6/xfrm6_mode_beet.c13
-rw-r--r--net/ipv6/xfrm6_mode_ro.c12
-rw-r--r--net/ipv6/xfrm6_mode_transport.c12
-rw-r--r--net/ipv6/xfrm6_mode_tunnel.c13
-rw-r--r--net/ipv6/xfrm6_tunnel.c1
9 files changed, 36 insertions, 32 deletions
diff --git a/net/ipv6/ah6.c b/net/ipv6/ah6.c
index c51d77564b44..ac6bae17a13b 100644
--- a/net/ipv6/ah6.c
+++ b/net/ipv6/ah6.c
@@ -236,6 +236,7 @@ static int ah6_output(struct xfrm_state *x, struct sk_buff *skb)
char hdrs[0];
} *tmp_ext;
+ skb_push(skb, -skb_network_offset(skb));
top_iph = ipv6_hdr(skb);
top_iph->payload_len = htons(skb->len - sizeof(*top_iph));
diff --git a/net/ipv6/esp6.c b/net/ipv6/esp6.c
index 7355bb0345e2..21c93f026dbc 100644
--- a/net/ipv6/esp6.c
+++ b/net/ipv6/esp6.c
@@ -54,13 +54,8 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
int nfrags;
u8 *tail;
struct esp_data *esp = x->data;
- int hdr_len = (skb_transport_offset(skb) +
- sizeof(*esph) + esp->conf.ivlen);
- /* Strip IP+ESP header. */
- __skb_pull(skb, hdr_len);
-
- /* Now skb is pure payload to encrypt */
+ /* skb is pure payload to encrypt */
err = -ENOMEM;
/* Round to block size */
@@ -89,7 +84,7 @@ static int esp6_output(struct xfrm_state *x, struct sk_buff *skb)
tail[clen-skb->len - 2] = (clen - skb->len) - 2;
pskb_put(skb, trailer, clen - skb->len);
- __skb_push(skb, -skb_network_offset(skb));
+ skb_push(skb, -skb_network_offset(skb));
top_iph = ipv6_hdr(skb);
esph = (struct ipv6_esp_hdr *)skb_transport_header(skb);
top_iph->payload_len = htons(skb->len + alen - sizeof(*top_iph));
diff --git a/net/ipv6/ipcomp6.c b/net/ipv6/ipcomp6.c
index 71a14c09975c..87e6407ebf97 100644
--- a/net/ipv6/ipcomp6.c
+++ b/net/ipv6/ipcomp6.c
@@ -128,7 +128,10 @@ static int ipcomp6_output(struct xfrm_state *x, struct sk_buff *skb)
u8 *start, *scratch;
struct crypto_comp *tfm;
int cpu;
- int hdr_len = skb_transport_offset(skb);
+ int hdr_len;
+
+ skb_push(skb, -skb_network_offset(skb));
+ hdr_len = skb_transport_offset(skb);
/* check whether datagram len is larger than threshold */
if ((skb->len - hdr_len) < ipcd->threshold) {
diff --git a/net/ipv6/mip6.c b/net/ipv6/mip6.c
index 6475baca63d2..0e7a60f7393a 100644
--- a/net/ipv6/mip6.c
+++ b/net/ipv6/mip6.c
@@ -153,6 +153,7 @@ static int mip6_destopt_output(struct xfrm_state *x, struct sk_buff *skb)
u8 nexthdr;
int len;
+ skb_push(skb, -skb_network_offset(skb));
iph = ipv6_hdr(skb);
iph->payload_len = htons(skb->len - sizeof(*iph));
@@ -367,6 +368,7 @@ static int mip6_rthdr_output(struct xfrm_state *x, struct sk_buff *skb)
struct rt2_hdr *rt2;
u8 nexthdr;
+ skb_push(skb, -skb_network_offset(skb));
iph = ipv6_hdr(skb);
iph->payload_len = htons(skb->len - sizeof(*iph));
diff --git a/net/ipv6/xfrm6_mode_beet.c b/net/ipv6/xfrm6_mode_beet.c
index d9366dfbf868..bca018d19ec6 100644
--- a/net/ipv6/xfrm6_mode_beet.c
+++ b/net/ipv6/xfrm6_mode_beet.c
@@ -29,8 +29,8 @@
* filled in by x->type->output and the mac header will be set to the
* nextheader field of the extension header directly preceding the
* encapsulation header, or in its absence, that of the top IP header.
- * The value of skb->data and the network header will always point to the
- * top IP header.
+ * The value of the network header will always point to the top IP header
+ * while skb->data will point to the payload.
*/
static int xfrm6_beet_output(struct xfrm_state *x, struct sk_buff *skb)
{
@@ -38,16 +38,17 @@ static int xfrm6_beet_output(struct xfrm_state *x, struct sk_buff *skb)
u8 *prevhdr;
int hdr_len;
- skb_push(skb, x->props.header_len);
iph = ipv6_hdr(skb);
hdr_len = ip6_find_1stfragopt(skb, &prevhdr);
- memmove(skb->data, iph, hdr_len);
skb_set_mac_header(skb, (prevhdr - x->props.header_len) - skb->data);
- skb_reset_network_header(skb);
- skb_set_transport_header(skb, hdr_len);
+ skb_set_network_header(skb, -x->props.header_len);
+ skb_set_transport_header(skb, hdr_len - x->props.header_len);
+ __skb_pull(skb, hdr_len);
+
top_iph = ipv6_hdr(skb);
+ memmove(top_iph, iph, hdr_len);
ipv6_addr_copy(&top_iph->saddr, (struct in6_addr *)&x->props.saddr);
ipv6_addr_copy(&top_iph->daddr, (struct in6_addr *)&x->id.daddr);
diff --git a/net/ipv6/xfrm6_mode_ro.c b/net/ipv6/xfrm6_mode_ro.c
index 25758048af54..5c29b367b432 100644
--- a/net/ipv6/xfrm6_mode_ro.c
+++ b/net/ipv6/xfrm6_mode_ro.c
@@ -42,8 +42,8 @@
* filled in by x->type->output and the mac header will be set to the
* nextheader field of the extension header directly preceding the
* encapsulation header, or in its absence, that of the top IP header.
- * The value of skb->data and the network header will always point to the
- * top IP header.
+ * The value of the network header will always point to the top IP header
+ * while skb->data will point to the payload.
*/
static int xfrm6_ro_output(struct xfrm_state *x, struct sk_buff *skb)
{
@@ -51,14 +51,14 @@ static int xfrm6_ro_output(struct xfrm_state *x, struct sk_buff *skb)
u8 *prevhdr;
int hdr_len;
- skb_push(skb, x->props.header_len);
iph = ipv6_hdr(skb);
hdr_len = x->type->hdr_offset(x, skb, &prevhdr);
skb_set_mac_header(skb, (prevhdr - x->props.header_len) - skb->data);
- skb_reset_network_header(skb);
- skb_set_transport_header(skb, hdr_len);
- memmove(skb->data, iph, hdr_len);
+ skb_set_network_header(skb, -x->props.header_len);
+ skb_set_transport_header(skb, hdr_len - x->props.header_len);
+ __skb_pull(skb, hdr_len);
+ memmove(ipv6_hdr(skb), iph, hdr_len);
x->lastused = get_seconds();
diff --git a/net/ipv6/xfrm6_mode_transport.c b/net/ipv6/xfrm6_mode_transport.c
index 65c166b5d72c..f2ee186494ed 100644
--- a/net/ipv6/xfrm6_mode_transport.c
+++ b/net/ipv6/xfrm6_mode_transport.c
@@ -23,8 +23,8 @@
* filled in by x->type->output and the mac header will be set to the
* nextheader field of the extension header directly preceding the
* encapsulation header, or in its absence, that of the top IP header.
- * The value of skb->data and the network header will always point to the
- * top IP header.
+ * The value of the network header will always point to the top IP header
+ * while skb->data will point to the payload.
*/
static int xfrm6_transport_output(struct xfrm_state *x, struct sk_buff *skb)
{
@@ -32,14 +32,14 @@ static int xfrm6_transport_output(struct xfrm_state *x, struct sk_buff *skb)
u8 *prevhdr;
int hdr_len;
- skb_push(skb, x->props.header_len);
iph = ipv6_hdr(skb);
hdr_len = x->type->hdr_offset(x, skb, &prevhdr);
skb_set_mac_header(skb, (prevhdr - x->props.header_len) - skb->data);
- skb_reset_network_header(skb);
- skb_set_transport_header(skb, hdr_len);
- memmove(skb->data, iph, hdr_len);
+ skb_set_network_header(skb, -x->props.header_len);
+ skb_set_transport_header(skb, hdr_len - x->props.header_len);
+ __skb_pull(skb, hdr_len);
+ memmove(ipv6_hdr(skb), iph, hdr_len);
return 0;
}
diff --git a/net/ipv6/xfrm6_mode_tunnel.c b/net/ipv6/xfrm6_mode_tunnel.c
index 3dd40af75e81..01bd7d11ea1b 100644
--- a/net/ipv6/xfrm6_mode_tunnel.c
+++ b/net/ipv6/xfrm6_mode_tunnel.c
@@ -41,8 +41,8 @@ static inline void ip6ip_ecn_decapsulate(struct sk_buff *skb)
* filled in by x->type->output and the mac header will be set to the
* nextheader field of the extension header directly preceding the
* encapsulation header, or in its absence, that of the top IP header.
- * The value of skb->data and the network header will always point to the
- * top IP header.
+ * The value of the network header will always point to the top IP header
+ * while skb->data will point to the payload.
*/
static int xfrm6_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
{
@@ -51,12 +51,13 @@ static int xfrm6_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
struct ipv6hdr *iph, *top_iph;
int dsfield;
- skb_push(skb, x->props.header_len);
iph = ipv6_hdr(skb);
- skb_set_mac_header(skb, offsetof(struct ipv6hdr, nexthdr));
- skb_reset_network_header(skb);
- skb_set_transport_header(skb, sizeof(struct ipv6hdr));
+ skb_set_mac_header(skb, offsetof(struct ipv6hdr, nexthdr) -
+ x->props.header_len);
+ skb_set_network_header(skb, -x->props.header_len);
+ skb_set_transport_header(skb, sizeof(struct ipv6hdr) -
+ x->props.header_len);
top_iph = ipv6_hdr(skb);
top_iph->version = 6;
diff --git a/net/ipv6/xfrm6_tunnel.c b/net/ipv6/xfrm6_tunnel.c
index aeb06076fdd0..00a1a3e5237c 100644
--- a/net/ipv6/xfrm6_tunnel.c
+++ b/net/ipv6/xfrm6_tunnel.c
@@ -244,6 +244,7 @@ static int xfrm6_tunnel_output(struct xfrm_state *x, struct sk_buff *skb)
{
struct ipv6hdr *top_iph;
+ skb_push(skb, -skb_network_offset(skb));
top_iph = ipv6_hdr(skb);
top_iph->payload_len = htons(skb->len - sizeof(struct ipv6hdr));
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-12 17:55:34 +0100