[IPV6]: Only set nfheader_len for top xfrm dst
We only need to set nfheader_len in the top xfrm dst. This is because
we only ever read the nfheader_len from the top xfrm dst.
It is also easier to count nfheader_len as part of header_len which
then lets us remove the ugly wrapper functions for incrementing and
decrementing header lengths in xfrm6_policy.c.
Signed-off-by: Herbert Xu <[EMAIL PROTECTED]>
---
net/ipv6/ip6_output.c | 3 ++-
net/ipv6/xfrm6_policy.c | 26 ++++----------------------
2 files changed, 6 insertions(+), 23 deletions(-)
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 653fc0a..6289dfc 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -1096,7 +1096,8 @@ int ip6_append_data(struct sock *sk, int getfrag(void
*from, char *to,
inet->cork.length = 0;
sk->sk_sndmsg_page = NULL;
sk->sk_sndmsg_off = 0;
- exthdrlen = rt->u.dst.header_len + (opt ? opt->opt_flen : 0);
+ exthdrlen = rt->u.dst.header_len + (opt ? opt->opt_flen : 0) -
+ rt->u.dst.nfheader_len;
length += exthdrlen;
transhdrlen += exthdrlen;
} else {
diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c
index 82e27b8..e5170bc 100644
--- a/net/ipv6/xfrm6_policy.c
+++ b/net/ipv6/xfrm6_policy.c
@@ -102,24 +102,6 @@ __xfrm6_bundle_addr_local(struct xfrm_state *x, struct
in6_addr *addr)
(struct in6_addr*)&x->props.saddr;
}
-static inline void
-__xfrm6_bundle_len_inc(int *len, int *nflen, struct xfrm_state *x)
-{
- if (x->type->flags & XFRM_TYPE_NON_FRAGMENT)
- *nflen += x->props.header_len;
- else
- *len += x->props.header_len;
-}
-
-static inline void
-__xfrm6_bundle_len_dec(int *len, int *nflen, struct xfrm_state *x)
-{
- if (x->type->flags & XFRM_TYPE_NON_FRAGMENT)
- *nflen -= x->props.header_len;
- else
- *len -= x->props.header_len;
-}
-
/* Allocate chain of dst_entry's, attach known xfrm's, calculate
* all the metrics... Shortly, bundle a bundle.
*/
@@ -142,7 +124,6 @@ __xfrm6_bundle_create(struct xfrm_policy *policy, struct
xfrm_state **xfrm, int
int i;
int err = 0;
int header_len = 0;
- int nfheader_len = 0;
int trailer_len = 0;
dst = dst_prev = NULL;
@@ -175,7 +156,9 @@ __xfrm6_bundle_create(struct xfrm_policy *policy, struct
xfrm_state **xfrm, int
dst1->next = dst_prev;
dst_prev = dst1;
- __xfrm6_bundle_len_inc(&header_len, &nfheader_len, xfrm[i]);
+ if (xfrm[i]->type->flags & XFRM_TYPE_NON_FRAGMENT)
+ dst->nfheader_len += xfrm[i]->props.header_len;
+ header_len += xfrm[i]->props.header_len;
trailer_len += xfrm[i]->props.trailer_len;
if (xfrm[i]->props.mode != XFRM_MODE_TRANSPORT) {
@@ -223,7 +206,6 @@ __xfrm6_bundle_create(struct xfrm_policy *policy, struct
xfrm_state **xfrm, int
dst_prev->flags |= DST_HOST;
dst_prev->lastuse = jiffies;
dst_prev->header_len = header_len;
- dst_prev->nfheader_len = nfheader_len;
dst_prev->trailer_len = trailer_len;
memcpy(&dst_prev->metrics, &x->route->metrics,
sizeof(dst_prev->metrics));
@@ -242,7 +224,7 @@ __xfrm6_bundle_create(struct xfrm_policy *policy, struct
xfrm_state **xfrm, int
x->u.rt6.rt6i_src = rt0->rt6i_src;
x->u.rt6.rt6i_idev = rt0->rt6i_idev;
in6_dev_hold(rt0->rt6i_idev);
- __xfrm6_bundle_len_dec(&header_len, &nfheader_len,
x->u.dst.xfrm);
+ header_len -= x->u.dst.xfrm->props.header_len;
trailer_len -= x->u.dst.xfrm->props.trailer_len;
}
-
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