aboutsummaryrefslogtreecommitdiffstats
path: root/net/ipv6
diff options
context:
space:
mode:
Diffstat (limited to 'net/ipv6')
-rw-r--r--net/ipv6/xfrm6_input.c7
-rw-r--r--net/ipv6/xfrm6_mode_beet.c36
-rw-r--r--net/ipv6/xfrm6_mode_tunnel.c31
-rw-r--r--net/ipv6/xfrm6_output.c1
-rw-r--r--net/ipv6/xfrm6_state.c5
5 files changed, 44 insertions, 36 deletions
diff --git a/net/ipv6/xfrm6_input.c b/net/ipv6/xfrm6_input.c
index 515783707e86..c458d0a2e684 100644
--- a/net/ipv6/xfrm6_input.c
+++ b/net/ipv6/xfrm6_input.c
@@ -16,6 +16,11 @@
#include <net/ipv6.h>
#include <net/xfrm.h>
+int xfrm6_extract_input(struct xfrm_state *x, struct sk_buff *skb)
+{
+ return xfrm6_extract_header(skb);
+}
+
int xfrm6_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi)
{
int err;
@@ -68,7 +73,7 @@ int xfrm6_rcv_spi(struct sk_buff *skb, int nexthdr, __be32 spi)
xfrm_vec[xfrm_nr++] = x;
- if (x->outer_mode->input(x, skb))
+ if (x->inner_mode->input(x, skb))
goto drop;
if (x->outer_mode->flags & XFRM_MODE_FLAG_TUNNEL) {
diff --git a/net/ipv6/xfrm6_mode_beet.c b/net/ipv6/xfrm6_mode_beet.c
index 4988ed9c76c6..0527d11c1ae3 100644
--- a/net/ipv6/xfrm6_mode_beet.c
+++ b/net/ipv6/xfrm6_mode_beet.c
@@ -19,6 +19,20 @@
#include <net/ipv6.h>
#include <net/xfrm.h>
+static void xfrm6_beet_make_header(struct sk_buff *skb)
+{
+ struct ipv6hdr *iph = ipv6_hdr(skb);
+
+ iph->version = 6;
+
+ memcpy(iph->flow_lbl, XFRM_MODE_SKB_CB(skb)->flow_lbl,
+ sizeof(iph->flow_lbl));
+ iph->nexthdr = XFRM_MODE_SKB_CB(skb)->protocol;
+
+ ipv6_change_dsfield(iph, 0, XFRM_MODE_SKB_CB(skb)->tos);
+ iph->hop_limit = XFRM_MODE_SKB_CB(skb)->ttl;
+}
+
/* Add encapsulation header.
*
* The top IP header will be constructed per draft-nikander-esp-beet-mode-06.txt.
@@ -31,16 +45,11 @@ static int xfrm6_beet_output(struct xfrm_state *x, struct sk_buff *skb)
skb->mac_header = skb->network_header +
offsetof(struct ipv6hdr, nexthdr);
skb->transport_header = skb->network_header + sizeof(*top_iph);
- top_iph = ipv6_hdr(skb);
- top_iph->version = 6;
+ xfrm6_beet_make_header(skb);
- memcpy(top_iph->flow_lbl, XFRM_MODE_SKB_CB(skb)->flow_lbl,
- sizeof(top_iph->flow_lbl));
- top_iph->nexthdr = XFRM_MODE_SKB_CB(skb)->protocol;
+ top_iph = ipv6_hdr(skb);
- ipv6_change_dsfield(top_iph, 0, XFRM_MODE_SKB_CB(skb)->tos);
- top_iph->hop_limit = XFRM_MODE_SKB_CB(skb)->ttl;
ipv6_addr_copy(&top_iph->saddr, (struct in6_addr *)&x->props.saddr);
ipv6_addr_copy(&top_iph->daddr, (struct in6_addr *)&x->id.daddr);
return 0;
@@ -51,19 +60,21 @@ static int xfrm6_beet_input(struct xfrm_state *x, struct sk_buff *skb)
struct ipv6hdr *ip6h;
const unsigned char *old_mac;
int size = sizeof(struct ipv6hdr);
- int err = -EINVAL;
+ int err;
- if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
+ err = skb_cow_head(skb, size + skb->mac_len);
+ if (err)
goto out;
- skb_push(skb, size);
- memmove(skb->data, skb_network_header(skb), size);
+ __skb_push(skb, size);
skb_reset_network_header(skb);
old_mac = skb_mac_header(skb);
skb_set_mac_header(skb, -skb->mac_len);
memmove(skb_mac_header(skb), old_mac, skb->mac_len);
+ xfrm6_beet_make_header(skb);
+
ip6h = ipv6_hdr(skb);
ip6h->payload_len = htons(skb->len - size);
ipv6_addr_copy(&ip6h->daddr, (struct in6_addr *) &x->sel.daddr.a6);
@@ -74,7 +85,8 @@ out:
}
static struct xfrm_mode xfrm6_beet_mode = {
- .input = xfrm6_beet_input,
+ .input2 = xfrm6_beet_input,
+ .input = xfrm_prepare_input,
.output2 = xfrm6_beet_output,
.output = xfrm6_prepare_output,
.owner = THIS_MODULE,
diff --git a/net/ipv6/xfrm6_mode_tunnel.c b/net/ipv6/xfrm6_mode_tunnel.c
index d45ce5d44197..f7d0d6612650 100644
--- a/net/ipv6/xfrm6_mode_tunnel.c
+++ b/net/ipv6/xfrm6_mode_tunnel.c
@@ -25,12 +25,6 @@ static inline void ipip6_ecn_decapsulate(struct sk_buff *skb)
IP6_ECN_set_ce(inner_iph);
}
-static inline void ip6ip_ecn_decapsulate(struct sk_buff *skb)
-{
- if (INET_ECN_is_ce(ipv6_get_dsfield(ipv6_hdr(skb))))
- IP_ECN_set_ce(ipip_hdr(skb));
-}
-
/* Add encapsulation header.
*
* The top IP header will be constructed per RFC 2401.
@@ -68,10 +62,8 @@ static int xfrm6_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
{
int err = -EINVAL;
const unsigned char *old_mac;
- const unsigned char *nh = skb_network_header(skb);
- if (nh[IP6CB(skb)->nhoff] != IPPROTO_IPV6 &&
- nh[IP6CB(skb)->nhoff] != IPPROTO_IPIP)
+ if (XFRM_MODE_SKB_CB(skb)->protocol != IPPROTO_IPV6)
goto out;
if (!pskb_may_pull(skb, sizeof(struct ipv6hdr)))
goto out;
@@ -80,18 +72,12 @@ static int xfrm6_tunnel_input(struct xfrm_state *x, struct sk_buff *skb)
(err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC)))
goto out;
- nh = skb_network_header(skb);
- if (nh[IP6CB(skb)->nhoff] == IPPROTO_IPV6) {
- if (x->props.flags & XFRM_STATE_DECAP_DSCP)
- ipv6_copy_dscp(ipv6_get_dsfield(ipv6_hdr(skb)),
- ipipv6_hdr(skb));
- if (!(x->props.flags & XFRM_STATE_NOECN))
- ipip6_ecn_decapsulate(skb);
- } else {
- if (!(x->props.flags & XFRM_STATE_NOECN))
- ip6ip_ecn_decapsulate(skb);
- skb->protocol = htons(ETH_P_IP);
- }
+ if (x->props.flags & XFRM_STATE_DECAP_DSCP)
+ ipv6_copy_dscp(ipv6_get_dsfield(ipv6_hdr(skb)),
+ ipipv6_hdr(skb));
+ if (!(x->props.flags & XFRM_STATE_NOECN))
+ ipip6_ecn_decapsulate(skb);
+
old_mac = skb_mac_header(skb);
skb_set_mac_header(skb, -skb->mac_len);
memmove(skb_mac_header(skb), old_mac, skb->mac_len);
@@ -103,7 +89,8 @@ out:
}
static struct xfrm_mode xfrm6_tunnel_mode = {
- .input = xfrm6_tunnel_input,
+ .input2 = xfrm6_tunnel_input,
+ .input = xfrm_prepare_input,
.output2 = xfrm6_tunnel_output,
.output = xfrm6_prepare_output,
.owner = THIS_MODULE,
diff --git a/net/ipv6/xfrm6_output.c b/net/ipv6/xfrm6_output.c
index bc2e80e3b0b1..c45050cfe72b 100644
--- a/net/ipv6/xfrm6_output.c
+++ b/net/ipv6/xfrm6_output.c
@@ -53,6 +53,7 @@ int xfrm6_extract_output(struct xfrm_state *x, struct sk_buff *skb)
if (err)
return err;
+ IP6CB(skb)->nhoff = offsetof(struct ipv6hdr, nexthdr);
return xfrm6_extract_header(skb);
}
diff --git a/net/ipv6/xfrm6_state.c b/net/ipv6/xfrm6_state.c
index 98b05f472322..90fef0a4726f 100644
--- a/net/ipv6/xfrm6_state.c
+++ b/net/ipv6/xfrm6_state.c
@@ -177,7 +177,8 @@ int xfrm6_extract_header(struct sk_buff *skb)
XFRM_MODE_SKB_CB(skb)->frag_off = htons(IP_DF);
XFRM_MODE_SKB_CB(skb)->tos = ipv6_get_dsfield(iph);
XFRM_MODE_SKB_CB(skb)->ttl = iph->hop_limit;
- XFRM_MODE_SKB_CB(skb)->protocol = iph->nexthdr;
+ XFRM_MODE_SKB_CB(skb)->protocol =
+ skb_network_header(skb)[IP6CB(skb)->nhoff];
memcpy(XFRM_MODE_SKB_CB(skb)->flow_lbl, iph->flow_lbl,
sizeof(XFRM_MODE_SKB_CB(skb)->flow_lbl));
@@ -187,11 +188,13 @@ int xfrm6_extract_header(struct sk_buff *skb)
static struct xfrm_state_afinfo xfrm6_state_afinfo = {
.family = AF_INET6,
.proto = IPPROTO_IPV6,
+ .eth_proto = htons(ETH_P_IPV6),
.owner = THIS_MODULE,
.init_tempsel = __xfrm6_init_tempsel,
.tmpl_sort = __xfrm6_tmpl_sort,
.state_sort = __xfrm6_state_sort,
.output = xfrm6_output,
+ .extract_input = xfrm6_extract_input,
.extract_output = xfrm6_extract_output,
};
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.