diff options
Diffstat (limited to 'net/ipv4')
| -rw-r--r-- | net/ipv4/arp.c | 6 | ||||
| -rw-r--r-- | net/ipv4/fib_trie.c | 4 | ||||
| -rw-r--r-- | net/ipv4/ip_output.c | 2 | ||||
| -rw-r--r-- | net/ipv4/ipmr.c | 3 | ||||
| -rw-r--r-- | net/ipv4/tcp.c | 34 | ||||
| -rw-r--r-- | net/ipv4/udp.c | 10 |
6 files changed, 38 insertions, 21 deletions
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c index 6e747065c20..80769f1f9fa 100644 --- a/net/ipv4/arp.c +++ b/net/ipv4/arp.c @@ -661,13 +661,13 @@ struct sk_buff *arp_create(int type, int ptype, __be32 dest_ip, #endif #endif -#ifdef CONFIG_FDDI +#if defined(CONFIG_FDDI) || defined(CONFIG_FDDI_MODULE) case ARPHRD_FDDI: arp->ar_hrd = htons(ARPHRD_ETHER); arp->ar_pro = htons(ETH_P_IP); break; #endif -#ifdef CONFIG_TR +#if defined(CONFIG_TR) || defined(CONFIG_TR_MODULE) case ARPHRD_IEEE802_TR: arp->ar_hrd = htons(ARPHRD_IEEE802); arp->ar_pro = htons(ETH_P_IP); @@ -1051,7 +1051,7 @@ static int arp_req_set(struct net *net, struct arpreq *r, return -EINVAL; } switch (dev->type) { -#ifdef CONFIG_FDDI +#if defined(CONFIG_FDDI) || defined(CONFIG_FDDI_MODULE) case ARPHRD_FDDI: /* * According to RFC 1390, FDDI devices should accept ARP diff --git a/net/ipv4/fib_trie.c b/net/ipv4/fib_trie.c index 59a838795e3..c98f115fb0f 100644 --- a/net/ipv4/fib_trie.c +++ b/net/ipv4/fib_trie.c @@ -209,7 +209,9 @@ static inline struct node *tnode_get_child_rcu(struct tnode *tn, unsigned int i) { struct node *ret = tnode_get_child(tn, i); - return rcu_dereference(ret); + return rcu_dereference_check(ret, + rcu_read_lock_held() || + lockdep_rtnl_is_held()); } static inline int tnode_child_length(const struct tnode *tn) diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c index c65f18e0936..d1bcc9f21d4 100644 --- a/net/ipv4/ip_output.c +++ b/net/ipv4/ip_output.c @@ -120,7 +120,7 @@ static int ip_dev_loopback_xmit(struct sk_buff *newskb) newskb->pkt_type = PACKET_LOOPBACK; newskb->ip_summed = CHECKSUM_UNNECESSARY; WARN_ON(!skb_dst(newskb)); - netif_rx(newskb); + netif_rx_ni(newskb); return 0; } diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c index 9d4f6d1340a..ec19a890c9a 100644 --- a/net/ipv4/ipmr.c +++ b/net/ipv4/ipmr.c @@ -754,7 +754,8 @@ ipmr_cache_unresolved(struct net *net, vifi_t vifi, struct sk_buff *skb) c->next = mfc_unres_queue; mfc_unres_queue = c; - mod_timer(&ipmr_expire_timer, c->mfc_un.unres.expires); + if (atomic_read(&net->ipv4.cache_resolve_queue_len) == 1) + mod_timer(&ipmr_expire_timer, c->mfc_un.unres.expires); } /* diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c index 0f8caf64caa..296150b2a62 100644 --- a/net/ipv4/tcp.c +++ b/net/ipv4/tcp.c @@ -2839,7 +2839,6 @@ static void __tcp_free_md5sig_pool(struct tcp_md5sig_pool * __percpu *pool) if (p->md5_desc.tfm) crypto_free_hash(p->md5_desc.tfm); kfree(p); - p = NULL; } } free_percpu(pool); @@ -2937,25 +2936,40 @@ retry: EXPORT_SYMBOL(tcp_alloc_md5sig_pool); -struct tcp_md5sig_pool *__tcp_get_md5sig_pool(int cpu) + +/** + * tcp_get_md5sig_pool - get md5sig_pool for this user + * + * We use percpu structure, so if we succeed, we exit with preemption + * and BH disabled, to make sure another thread or softirq handling + * wont try to get same context. + */ +struct tcp_md5sig_pool *tcp_get_md5sig_pool(void) { struct tcp_md5sig_pool * __percpu *p; - spin_lock_bh(&tcp_md5sig_pool_lock); + + local_bh_disable(); + + spin_lock(&tcp_md5sig_pool_lock); p = tcp_md5sig_pool; if (p) tcp_md5sig_users++; - spin_unlock_bh(&tcp_md5sig_pool_lock); - return (p ? *per_cpu_ptr(p, cpu) : NULL); -} + spin_unlock(&tcp_md5sig_pool_lock); + + if (p) + return *per_cpu_ptr(p, smp_processor_id()); -EXPORT_SYMBOL(__tcp_get_md5sig_pool); + local_bh_enable(); + return NULL; +} +EXPORT_SYMBOL(tcp_get_md5sig_pool); -void __tcp_put_md5sig_pool(void) +void tcp_put_md5sig_pool(void) { + local_bh_enable(); tcp_free_md5sig_pool(); } - -EXPORT_SYMBOL(__tcp_put_md5sig_pool); +EXPORT_SYMBOL(tcp_put_md5sig_pool); int tcp_md5_hash_header(struct tcp_md5sig_pool *hp, struct tcphdr *th) diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c index 954bbfb39df..c36522a0f11 100644 --- a/net/ipv4/udp.c +++ b/net/ipv4/udp.c @@ -472,8 +472,8 @@ static struct sock *__udp4_lib_lookup(struct net *net, __be32 saddr, if (hslot->count < hslot2->count) goto begin; - result = udp4_lib_lookup2(net, INADDR_ANY, sport, - daddr, hnum, dif, + result = udp4_lib_lookup2(net, saddr, sport, + INADDR_ANY, hnum, dif, hslot2, slot2); } rcu_read_unlock(); @@ -1527,6 +1527,9 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable, uh = udp_hdr(skb); ulen = ntohs(uh->len); + saddr = ip_hdr(skb)->saddr; + daddr = ip_hdr(skb)->daddr; + if (ulen > skb->len) goto short_packet; @@ -1540,9 +1543,6 @@ int __udp4_lib_rcv(struct sk_buff *skb, struct udp_table *udptable, if (udp4_csum_init(skb, uh, proto)) goto csum_error; - saddr = ip_hdr(skb)->saddr; - daddr = ip_hdr(skb)->daddr; - if (rt->rt_flags & (RTCF_BROADCAST|RTCF_MULTICAST)) return __udp4_lib_mcast_deliver(net, skb, uh, saddr, daddr, udptable); |