diff options
| -rw-r--r-- | include/net/inet_frag.h | 5 | ||||
| -rw-r--r-- | net/ipv4/ip_fragment.c | 65 | ||||
| -rw-r--r-- | net/ipv6/reassembly.c | 4 |
3 files changed, 32 insertions, 42 deletions
diff --git a/include/net/inet_frag.h b/include/net/inet_frag.h index 4b5449df0aad..0e8e159d88f7 100644 --- a/include/net/inet_frag.h +++ b/include/net/inet_frag.h @@ -119,11 +119,6 @@ static inline void inet_frag_put(struct inet_frag_queue *q) inet_frag_destroy(q); } -static inline bool inet_frag_evicting(struct inet_frag_queue *q) -{ - return false; -} - /* Memory Tracking Functions. */ static inline int frag_mem_limit(struct netns_frags *nf) diff --git a/net/ipv4/ip_fragment.c b/net/ipv4/ip_fragment.c index 44f4fa306e22..b844f517b75b 100644 --- a/net/ipv4/ip_fragment.c +++ b/net/ipv4/ip_fragment.c @@ -143,8 +143,11 @@ static bool frag_expire_skip_icmp(u32 user) static void ip_expire(struct timer_list *t) { struct inet_frag_queue *frag = from_timer(frag, t, timer); - struct ipq *qp; + struct sk_buff *clone, *head; + const struct iphdr *iph; struct net *net; + struct ipq *qp; + int err; qp = container_of(frag, struct ipq, q); net = container_of(qp->q.net, struct net, ipv4.frags); @@ -158,45 +161,41 @@ static void ip_expire(struct timer_list *t) ipq_kill(qp); __IP_INC_STATS(net, IPSTATS_MIB_REASMFAILS); - if (!inet_frag_evicting(&qp->q)) { - struct sk_buff *clone, *head = qp->q.fragments; - const struct iphdr *iph; - int err; + head = qp->q.fragments; - __IP_INC_STATS(net, IPSTATS_MIB_REASMTIMEOUT); + __IP_INC_STATS(net, IPSTATS_MIB_REASMTIMEOUT); - if (!(qp->q.flags & INET_FRAG_FIRST_IN) || !qp->q.fragments) - goto out; + if (!(qp->q.flags & INET_FRAG_FIRST_IN) || !head) + goto out; - head->dev = dev_get_by_index_rcu(net, qp->iif); - if (!head->dev) - goto out; + head->dev = dev_get_by_index_rcu(net, qp->iif); + if (!head->dev) + goto out; - /* skb has no dst, perform route lookup again */ - iph = ip_hdr(head); - err = ip_route_input_noref(head, iph->daddr, iph->saddr, + /* skb has no dst, perform route lookup again */ + iph = ip_hdr(head); + err = ip_route_input_noref(head, iph->daddr, iph->saddr, iph->tos, head->dev); - if (err) - goto out; + if (err) + goto out; - /* Only an end host needs to send an ICMP - * "Fragment Reassembly Timeout" message, per RFC792. - */ - if (frag_expire_skip_icmp(qp->q.key.v4.user) && - (skb_rtable(head)->rt_type != RTN_LOCAL)) - goto out; - - clone = skb_clone(head, GFP_ATOMIC); - - /* Send an ICMP "Fragment Reassembly Timeout" message. */ - if (clone) { - spin_unlock(&qp->q.lock); - icmp_send(clone, ICMP_TIME_EXCEEDED, - ICMP_EXC_FRAGTIME, 0); - consume_skb(clone); - goto out_rcu_unlock; - } + /* Only an end host needs to send an ICMP + * "Fragment Reassembly Timeout" message, per RFC792. + */ + if (frag_expire_skip_icmp(qp->q.key.v4.user) && + (skb_rtable(head)->rt_type != RTN_LOCAL)) + goto out; + + clone = skb_clone(head, GFP_ATOMIC); + + /* Send an ICMP "Fragment Reassembly Timeout" message. */ + if (clone) { + spin_unlock(&qp->q.lock); + icmp_send(clone, ICMP_TIME_EXCEEDED, + ICMP_EXC_FRAGTIME, 0); + consume_skb(clone); + goto out_rcu_unlock; } out: spin_unlock(&qp->q.lock); diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c index 3fc853e4492a..70acad126d04 100644 --- a/net/ipv6/reassembly.c +++ b/net/ipv6/reassembly.c @@ -106,10 +106,6 @@ void ip6_expire_frag_queue(struct net *net, struct frag_queue *fq) goto out_rcu_unlock; __IP6_INC_STATS(net, __in6_dev_get(dev), IPSTATS_MIB_REASMFAILS); - - if (inet_frag_evicting(&fq->q)) - goto out_rcu_unlock; - __IP6_INC_STATS(net, __in6_dev_get(dev), IPSTATS_MIB_REASMTIMEOUT); /* Don't send error if the first segment did not arrive. */ |