diff options
| -rw-r--r-- | include/net/ip.h | 1 | ||||
| -rw-r--r-- | net/ipv4/ip_forward.c | 2 | ||||
| -rw-r--r-- | net/ipv4/ip_output.c | 6 | ||||
| -rw-r--r-- | net/ipv4/ipmr.c | 2 |
4 files changed, 7 insertions, 4 deletions
diff --git a/include/net/ip.h b/include/net/ip.h index 08f36cd2b874..9742b92dc933 100644 --- a/include/net/ip.h +++ b/include/net/ip.h @@ -47,6 +47,7 @@ struct inet_skb_parm { #define IPSKB_REROUTED BIT(4) #define IPSKB_DOREDIRECT BIT(5) #define IPSKB_FRAG_PMTU BIT(6) +#define IPSKB_FRAG_SEGS BIT(7) u16 frag_max_size; }; diff --git a/net/ipv4/ip_forward.c b/net/ipv4/ip_forward.c index 9f0a7b96646f..8b4ffd216839 100644 --- a/net/ipv4/ip_forward.c +++ b/net/ipv4/ip_forward.c @@ -117,7 +117,7 @@ int ip_forward(struct sk_buff *skb) if (opt->is_strictroute && rt->rt_uses_gateway) goto sr_failed; - IPCB(skb)->flags |= IPSKB_FORWARDED; + IPCB(skb)->flags |= IPSKB_FORWARDED | IPSKB_FRAG_SEGS; mtu = ip_dst_mtu_maybe_forward(&rt->dst, true); if (ip_exceeds_mtu(skb, mtu)) { IP_INC_STATS(net, IPSTATS_MIB_FRAGFAILS); diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index e23f141c9ba5..dde37fb340bf 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -223,8 +223,10 @@ static int ip_finish_output_gso(struct net *net, struct sock *sk, struct sk_buff *segs; int ret = 0; - /* common case: locally created skb or seglen is <= mtu */ - if (((IPCB(skb)->flags & IPSKB_FORWARDED) == 0) || + /* common case: fragmentation of segments is not allowed, + * or seglen is <= mtu + */ + if (((IPCB(skb)->flags & IPSKB_FRAG_SEGS) == 0) || skb_gso_validate_mtu(skb, mtu)) return ip_finish_output2(net, sk, skb); diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index e0d76f5f0113..eec234161b89 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -1749,7 +1749,7 @@ static void ipmr_queue_xmit(struct net *net, struct mr_table *mrt, vif->dev->stats.tx_bytes += skb->len; } - IPCB(skb)->flags |= IPSKB_FORWARDED; + IPCB(skb)->flags |= IPSKB_FORWARDED | IPSKB_FRAG_SEGS; /* RFC1584 teaches, that DVMRP/PIM router must deliver packets locally * not only before forwarding, but after forwarding on all output |