diff options
| -rw-r--r-- | include/net/dst.h | 1 | ||||
| -rw-r--r-- | include/net/xfrm.h | 2 | ||||
| -rw-r--r-- | net/ipv4/xfrm4_policy.c | 1 | ||||
| -rw-r--r-- | net/ipv6/ip6_output.c | 2 | ||||
| -rw-r--r-- | net/ipv6/xfrm6_policy.c | 24 |
5 files changed, 27 insertions, 3 deletions
diff --git a/include/net/dst.h b/include/net/dst.h index 36d54fc248b0..a8d825f90305 100644 --- a/include/net/dst.h +++ b/include/net/dst.h @@ -54,6 +54,7 @@ struct dst_entry unsigned long expires; unsigned short header_len; /* more space at head required */ + unsigned short nfheader_len; /* more non-fragment space at head required */ unsigned short trailer_len; /* space to reserve at tail */ u32 metrics[RTAX_MAX]; diff --git a/include/net/xfrm.h b/include/net/xfrm.h index aa3ac994477b..aa93cc1f6299 100644 --- a/include/net/xfrm.h +++ b/include/net/xfrm.h @@ -260,6 +260,8 @@ struct xfrm_type char *description; struct module *owner; __u8 proto; + __u8 flags; +#define XFRM_TYPE_NON_FRAGMENT 1 int (*init_state)(struct xfrm_state *x); void (*destructor)(struct xfrm_state *); diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c index a5bed741de2c..e517981ceadd 100644 --- a/net/ipv4/xfrm4_policy.c +++ b/net/ipv4/xfrm4_policy.c @@ -135,6 +135,7 @@ __xfrm4_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 = 0; dst_prev->trailer_len = trailer_len; memcpy(&dst_prev->metrics, &x->route->metrics, sizeof(dst_prev->metrics)); diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c index 2a376b7d91b4..258e3e45f5e0 100644 --- a/net/ipv6/ip6_output.c +++ b/net/ipv6/ip6_output.c @@ -971,7 +971,7 @@ int ip6_append_data(struct sock *sk, int getfrag(void *from, char *to, hh_len = LL_RESERVED_SPACE(rt->u.dst.dev); - fragheaderlen = sizeof(struct ipv6hdr) + (opt ? opt->opt_nflen : 0); + fragheaderlen = sizeof(struct ipv6hdr) + rt->u.dst.nfheader_len + (opt ? opt->opt_nflen : 0); maxfraglen = ((mtu - fragheaderlen) & ~7) + fragheaderlen - sizeof(struct frag_hdr); if (mtu <= sizeof(struct ipv6hdr) + IPV6_MAXPLEN) { diff --git a/net/ipv6/xfrm6_policy.c b/net/ipv6/xfrm6_policy.c index 9328fc88708a..a3f68c8b737e 100644 --- a/net/ipv6/xfrm6_policy.c +++ b/net/ipv6/xfrm6_policy.c @@ -75,6 +75,24 @@ __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. */ @@ -99,6 +117,7 @@ __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; @@ -135,7 +154,7 @@ __xfrm6_bundle_create(struct xfrm_policy *policy, struct xfrm_state **xfrm, int local = __xfrm6_bundle_addr_local(xfrm[i], local); tunnel = 1; } - header_len += xfrm[i]->props.header_len; + __xfrm6_bundle_len_inc(&header_len, &nfheader_len, xfrm[i]); trailer_len += xfrm[i]->props.trailer_len; if (tunnel) { @@ -170,6 +189,7 @@ __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)); @@ -188,7 +208,7 @@ __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); - header_len -= x->u.dst.xfrm->props.header_len; + __xfrm6_bundle_len_dec(&header_len, &nfheader_len, x->u.dst.xfrm); trailer_len -= x->u.dst.xfrm->props.trailer_len; } |