diff options
Diffstat (limited to 'net/ipv4')
50 files changed, 1119 insertions, 911 deletions
diff --git a/net/ipv4/Kconfig b/net/ipv4/Kconfig index 8e3a1fd938a..7c3a7d19124 100644 --- a/net/ipv4/Kconfig +++ b/net/ipv4/Kconfig @@ -303,7 +303,7 @@ config ARPD If unsure, say N. config SYN_COOKIES - bool "IP: TCP syncookie support (disabled per default)" + bool "IP: TCP syncookie support" ---help--- Normal TCP/IP networking is open to an attack known as "SYN flooding". This denial-of-service attack prevents legitimate remote @@ -328,13 +328,13 @@ config SYN_COOKIES server is really overloaded. If this happens frequently better turn them off. - If you say Y here, note that SYN cookies aren't enabled by default; - you can enable them by saying Y to "/proc file system support" and + If you say Y here, you can disable SYN cookies at run time by + saying Y to "/proc file system support" and "Sysctl support" below and executing the command - echo 1 >/proc/sys/net/ipv4/tcp_syncookies + echo 0 > /proc/sys/net/ipv4/tcp_syncookies - at boot time after the /proc file system has been mounted. + after the /proc file system has been mounted. If unsure, say N. diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c index 551ce564b03..6a1100c25a9 100644 --- a/net/ipv4/af_inet.c +++ b/net/ipv4/af_inet.c @@ -355,6 +355,8 @@ lookup_protocol: inet = inet_sk(sk); inet->is_icsk = (INET_PROTOSW_ICSK & answer_flags) != 0; + inet->nodefrag = 0; + if (SOCK_RAW == sock->type) { inet->inet_num = protocol; if (IPPROTO_RAW == protocol) @@ -725,28 +727,31 @@ int inet_sendmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, sock_rps_record_flow(sk); /* We may need to bind the socket. */ - if (!inet_sk(sk)->inet_num && inet_autobind(sk)) + if (!inet_sk(sk)->inet_num && !sk->sk_prot->no_autobind && + inet_autobind(sk)) return -EAGAIN; return sk->sk_prot->sendmsg(iocb, sk, msg, size); } EXPORT_SYMBOL(inet_sendmsg); -static ssize_t inet_sendpage(struct socket *sock, struct page *page, int offset, - size_t size, int flags) +ssize_t inet_sendpage(struct socket *sock, struct page *page, int offset, + size_t size, int flags) { struct sock *sk = sock->sk; sock_rps_record_flow(sk); /* We may need to bind the socket. */ - if (!inet_sk(sk)->inet_num && inet_autobind(sk)) + if (!inet_sk(sk)->inet_num && !sk->sk_prot->no_autobind && + inet_autobind(sk)) return -EAGAIN; if (sk->sk_prot->sendpage) return sk->sk_prot->sendpage(sk, page, offset, size, flags); return sock_no_sendpage(sock, page, offset, size, flags); } +EXPORT_SYMBOL(inet_sendpage); int inet_recvmsg(struct kiocb *iocb, struct socket *sock, struct msghdr *msg, size_t size, int flags) @@ -892,10 +897,10 @@ const struct proto_ops inet_stream_ops = { .shutdown = inet_shutdown, .setsockopt = sock_common_setsockopt, .getsockopt = sock_common_getsockopt, - .sendmsg = tcp_sendmsg, + .sendmsg = inet_sendmsg, .recvmsg = inet_recvmsg, .mmap = sock_no_mmap, - .sendpage = tcp_sendpage, + .sendpage = inet_sendpage, .splice_read = tcp_splice_read, #ifdef CONFIG_COMPAT .compat_setsockopt = compat_sock_common_setsockopt, @@ -1100,7 +1105,7 @@ static int inet_sk_reselect_saddr(struct sock *sk) if (err) return err; - sk_setup_caps(sk, &rt->u.dst); + sk_setup_caps(sk, &rt->dst); new_saddr = rt->rt_src; @@ -1166,7 +1171,7 @@ int inet_sk_rebuild_header(struct sock *sk) err = ip_route_output_flow(sock_net(sk), &rt, &fl, sk, 0); } if (!err) - sk_setup_caps(sk, &rt->u.dst); + sk_setup_caps(sk, &rt->dst); else { /* Routing failed... */ sk->sk_route_caps = 0; @@ -1425,13 +1430,49 @@ unsigned long snmp_fold_field(void __percpu *mib[], int offt) } EXPORT_SYMBOL_GPL(snmp_fold_field); -int snmp_mib_init(void __percpu *ptr[2], size_t mibsize) +#if BITS_PER_LONG==32 + +u64 snmp_fold_field64(void __percpu *mib[], int offt, size_t syncp_offset) +{ + u64 res = 0; + int cpu; + + for_each_possible_cpu(cpu) { + void *bhptr, *userptr; + struct u64_stats_sync *syncp; + u64 v_bh, v_user; + unsigned int start; + + /* first mib used by softirq context, we must use _bh() accessors */ + bhptr = per_cpu_ptr(SNMP_STAT_BHPTR(mib), cpu); + syncp = (struct u64_stats_sync *)(bhptr + syncp_offset); + do { + start = u64_stats_fetch_begin_bh(syncp); + v_bh = *(((u64 *) bhptr) + offt); + } while (u64_stats_fetch_retry_bh(syncp, start)); + + /* second mib used in USER context */ + userptr = per_cpu_ptr(SNMP_STAT_USRPTR(mib), cpu); + syncp = (struct u64_stats_sync *)(userptr + syncp_offset); + do { + start = u64_stats_fetch_begin(syncp); + v_user = *(((u64 *) userptr) + offt); + } while (u64_stats_fetch_retry(syncp, start)); + + res += v_bh + v_user; + } + return res; +} +EXPORT_SYMBOL_GPL(snmp_fold_field64); +#endif + +int snmp_mib_init(void __percpu *ptr[2], size_t mibsize, size_t align) { BUG_ON(ptr == NULL); - ptr[0] = __alloc_percpu(mibsize, __alignof__(unsigned long)); + ptr[0] = __alloc_percpu(mibsize, align); if (!ptr[0]) goto err0; - ptr[1] = __alloc_percpu(mibsize, __alignof__(unsigned long)); + ptr[1] = __alloc_percpu(mibsize, align); if (!ptr[1]) goto err1; return 0; @@ -1488,25 +1529,32 @@ static const struct net_protocol icmp_protocol = { static __net_init int ipv4_mib_init_net(struct net *net) { if (snmp_mib_init((void __percpu **)net->mib.tcp_statistics, - sizeof(struct tcp_mib)) < 0) + sizeof(struct tcp_mib), + __alignof__(struct tcp_mib)) < 0) goto err_tcp_mib; if (snmp_mib_init((void __percpu **)net->mib.ip_statistics, - sizeof(struct ipstats_mib)) < 0) + sizeof(struct ipstats_mib), + __alignof__(struct ipstats_mib)) < 0) goto err_ip_mib; if (snmp_mib_init((void __percpu **)net->mib.net_statistics, - sizeof(struct linux_mib)) < 0) + sizeof(struct linux_mib), + __alignof__(struct linux_mib)) < 0) goto err_net_mib; if (snmp_mib_init((void __percpu **)net->mib.udp_statistics, - sizeof(struct udp_mib)) < 0) + sizeof(struct udp_mib), + __alignof__(struct udp_mib)) < 0) goto err_udp_mib; if (snmp_mib_init((void __percpu **)net->mib.udplite_statistics, - sizeof(struct udp_mib)) < 0) + sizeof(struct udp_mib), + __alignof__(struct udp_mib)) < 0) goto err_udplite_mib; if (snmp_mib_init((void __percpu **)net->mib.icmp_statistics, - sizeof(struct icmp_mib)) < 0) + sizeof(struct icmp_mib), + __alignof__(struct icmp_mib)) < 0) goto err_icmp_mib; if (snmp_mib_init((void __percpu **)net->mib.icmpmsg_statistics, - sizeof(struct icmpmsg_mib)) < 0) + sizeof(struct icmpmsg_mib), + __alignof__(struct icmpmsg_mib)) < 0) goto err_icmpmsg_mib; tcp_mib_init(net); diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c index f094b75810d..96c1955b3e2 100644 --- a/net/ipv4/arp.c +++ b/net/ipv4/arp.c @@ -116,6 +116,7 @@ #if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE) #include <net/atmclip.h> struct neigh_table *clip_tbl_hook; +EXPORT_SYMBOL(clip_tbl_hook); #endif #include <asm/system.h> @@ -169,6 +170,7 @@ const struct neigh_ops arp_broken_ops = { .hh_output = dev_queue_xmit, .queue_xmit = dev_queue_xmit, }; +EXPORT_SYMBOL(arp_broken_ops); struct neigh_table arp_tbl = { .family = AF_INET, @@ -198,6 +200,7 @@ struct neigh_table arp_tbl = { .gc_thresh2 = 512, .gc_thresh3 = 1024, }; +EXPORT_SYMBOL(arp_tbl); int arp_mc_map(__be32 addr, u8 *haddr, struct net_device *dev, int dir) { @@ -333,11 +336,14 @@ static void arp_solicit(struct neighbour *neigh, struct sk_buff *skb) struct net_device *dev = neigh->dev; __be32 target = *(__be32*)neigh->primary_key; int probes = atomic_read(&neigh->probes); - struct in_device *in_dev = in_dev_get(dev); + struct in_device *in_dev; - if (!in_dev) + rcu_read_lock(); + in_dev = __in_dev_get_rcu(dev); + if (!in_dev) { + rcu_read_unlock(); return; - + } switch (IN_DEV_ARP_ANNOUNCE(in_dev)) { default: case 0: /* By default announce any local IP */ @@ -358,9 +364,8 @@ static void arp_solicit(struct neighbour *neigh, struct sk_buff *skb) case 2: /* Avoid secondary IPs, get a primary/preferred one */ break; } + rcu_read_unlock(); - if (in_dev) - in_dev_put(in_dev); if (!saddr) saddr = inet_select_addr(dev, target, RT_SCOPE_LINK); @@ -427,7 +432,7 @@ static int arp_filter(__be32 sip, __be32 tip, struct net_device *dev) if (ip_route_output_key(net, &rt, &fl) < 0) return 1; - if (rt->u.dst.dev != dev) { + if (rt->dst.dev != dev) { NET_INC_STATS_BH(net, LINUX_MIB_ARPFILTER); flag = 1; } @@ -497,6 +502,7 @@ int arp_find(unsigned char *haddr, struct sk_buff *skb) kfree_skb(skb); return 1; } +EXPORT_SYMBOL(arp_find); /* END OF OBSOLETE FUNCTIONS */ @@ -532,7 +538,7 @@ static inline int arp_fwd_proxy(struct in_device *in_dev, struct in_device *out_dev; int imi, omi = -1; - if (rt->u.dst.dev == dev) + if (rt->dst.dev == dev) return 0; if (!IN_DEV_PROXY_ARP(in_dev)) @@ -545,10 +551,10 @@ static inline int arp_fwd_proxy(struct in_device *in_dev, /* place to check for proxy_arp for routes */ - if ((out_dev = in_dev_get(rt->u.dst.dev)) != NULL) { + out_dev = __in_dev_get_rcu(rt->dst.dev); + if (out_dev) omi = IN_DEV_MEDIUM_ID(out_dev); - in_dev_put(out_dev); - } + return (omi != imi && omi != -1); } @@ -576,7 +582,7 @@ static inline int arp_fwd_pvlan(struct in_device *in_dev, __be32 sip, __be32 tip) { /* Private VLAN is only concerned about the same ethernet segment */ - if (rt->u.dst.dev != dev) + if (rt->dst.dev != dev) return 0; /* Don't reply on self probes (often done by windowz boxes)*/ @@ -698,6 +704,7 @@ out: kfree_skb(skb); return NULL; } +EXPORT_SYMBOL(arp_create); /* * Send an arp packet. @@ -707,6 +714,7 @@ void arp_xmit(struct sk_buff *skb) /* Send it off, maybe filter it using firewalling first. */ NF_HOOK(NFPROTO_ARP, NF_ARP_OUT, skb, NULL, skb->dev, dev_queue_xmit); } +EXPORT_SYMBOL(arp_xmit); /* * Create and send an arp packet. @@ -733,6 +741,7 @@ void arp_send(int type, int ptype, __be32 dest_ip, arp_xmit(skb); } +EXPORT_SYMBOL(arp_send); /* * Process an arp request. @@ -741,7 +750,7 @@ void arp_send(int type, int ptype, __be32 dest_ip, static int arp_process(struct sk_buff *skb) { struct net_device *dev = skb->dev; - struct in_device *in_dev = in_dev_get(dev); + struct in_device *in_dev = __in_dev_get_rcu(dev); struct arphdr *arp; unsigned char *arp_ptr; struct rtable *rt; @@ -890,7 +899,6 @@ static int arp_process(struct sk_buff *skb) arp_send(ARPOP_REPLY,ETH_P_ARP,sip,dev,tip,sha,dev->dev_addr,sha); } else { pneigh_enqueue(&arp_tbl, in_dev->arp_parms, skb); - in_dev_put(in_dev); return 0; } goto out; @@ -936,8 +944,6 @@ static int arp_process(struct sk_buff *skb) } out: - if (in_dev) - in_dev_put(in_dev); consume_skb(skb); return 0; } @@ -1045,7 +1051,7 @@ static int arp_req_set(struct net *net, struct arpreq *r, struct rtable * rt; if ((err = ip_route_output_key(net, &rt, &fl)) != 0) return err; - dev = rt->u.dst.dev; + dev = rt->dst.dev; ip_rt_put(rt); if (!dev) return -EINVAL; @@ -1152,7 +1158,7 @@ static int arp_req_delete(struct net *net, struct arpreq *r, struct rtable * rt; if ((err = ip_route_output_key(net, &rt, &fl)) != 0) return err; - dev = rt->u.dst.dev; + dev = rt->dst.dev; ip_rt_put(rt); if (!dev) return -EINVAL; @@ -1453,14 +1459,3 @@ static int __init arp_proc_init(void) } #endif /* CONFIG_PROC_FS */ - -EXPORT_SYMBOL(arp_broken_ops); -EXPORT_SYMBOL(arp_find); -EXPORT_SYMBOL(arp_create); -EXPORT_SYMBOL(arp_xmit); -EXPORT_SYMBOL(arp_send); -EXPORT_SYMBOL(arp_tbl); - -#if defined(CONFIG_ATM_CLIP) || defined(CONFIG_ATM_CLIP_MODULE) -EXPORT_SYMBOL(clip_tbl_hook); -#endif diff --git a/net/ipv4/datagram.c b/net/ipv4/datagram.c index fb2465811b4..f0550941df7 100644 --- a/net/ipv4/datagram.c +++ b/net/ipv4/datagram.c @@ -69,9 +69,7 @@ int ip4_datagram_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len) sk->sk_state = TCP_ESTABLISHED; inet->inet_id = jiffies; - sk_dst_set(sk, &rt->u.dst); + sk_dst_set(sk, &rt->dst); return(0); } - EXPORT_SYMBOL(ip4_datagram_connect); - diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 382bc768ed5..da14c49284f 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -1081,6 +1081,7 @@ static int inetdev_event(struct notifier_block *this, unsigned long event, } ip_mc_up(in_dev); /* fall through */ + case NETDEV_NOTIFY_PEERS: case NETDEV_CHANGEADDR: /* Send gratuitous ARP to notify of link change */ if (IN_DEV_ARP_NOTIFY(in_dev)) { diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c index 4f0ed458c88..a4396891835 100644 --- a/net/ipv4/fib_frontend.c +++ b/net/ipv4/fib_frontend.c @@ -175,6 +175,7 @@ out: fib_res_put(&res); return dev; } +EXPORT_SYMBOL(ip_dev_find); /* * Find address type as if only "dev" was present in the system. If @@ -214,12 +215,14 @@ unsigned int inet_addr_type(struct net *net, __be32 addr) { return __inet_dev_addr_type(net, NULL, addr); } +EXPORT_SYMBOL(inet_addr_type); unsigned int inet_dev_addr_type(struct net *net, const struct net_device *dev, __be32 addr) { return __inet_dev_addr_type(net, dev, addr); } +EXPORT_SYMBOL(inet_dev_addr_type); /* Given (packet source, input interface) and optional (dst, oif, tos): - (main) check, that source is valid i.e. not broadcast or our local @@ -284,7 +287,7 @@ int fib_validate_source(__be32 src, __be32 dst, u8 tos, int oif, if (no_addr) goto last_resort; if (rpf == 1) - goto e_inval; + goto e_rpf; fl.oif = dev->ifindex; ret = 0; @@ -299,7 +302,7 @@ int fib_validate_source(__be32 src, __be32 dst, u8 tos, int oif, last_resort: if (rpf) - goto e_inval; + goto e_rpf; *spec_dst = inet_select_addr(dev, 0, RT_SCOPE_UNIVERSE); *itag = 0; return 0; @@ -308,6 +311,8 @@ e_inval_res: fib_res_put(&res); e_inval: return -EINVAL; +e_rpf: + return -EXDEV; } static inline __be32 sk_extract_addr(struct sockaddr *addr) @@ -1075,7 +1080,3 @@ void __init ip_fib_init(void) fib_hash_init(); } - -EXPORT_SYMBOL(inet_addr_type); -EXPORT_SYMBOL(inet_dev_addr_type); -EXPORT_SYMBOL(ip_dev_find); diff --git a/net/ipv4/icmp.c b/net/ipv4/icmp.c index d65e9215bcd..a0d847c7cba 100644 --- a/net/ipv4/icmp.c +++ b/net/ipv4/icmp.c @@ -181,6 +181,7 @@ const struct icmp_err icmp_err_convert[] = { .fatal = 1, }, }; +EXPORT_SYMBOL(icmp_err_convert); /* * ICMP control array. This specifies what to do with each ICMP. @@ -267,11 +268,12 @@ int xrlim_allow(struct dst_entry *dst, int timeout) dst->rate_tokens = token; return rc; } +EXPORT_SYMBOL(xrlim_allow); static inline int icmpv4_xrlim_allow(struct net *net, struct rtable *rt, int type, int code) { - struct dst_entry *dst = &rt->u.dst; + struct dst_entry *dst = &rt->dst; int rc = 1; if (type > NR_ICMP_TYPES) @@ -327,7 +329,7 @@ static void icmp_push_reply(struct icmp_bxm *icmp_param, struct sock *sk; struct sk_buff *skb; - sk = icmp_sk(dev_net((*rt)->u.dst.dev)); + sk = icmp_sk(dev_net((*rt)->dst.dev)); if (ip_append_data(sk, icmp_glue_bits, icmp_param, icmp_param->data_len+icmp_param->head_len, icmp_param->head_len, @@ -359,7 +361,7 @@ static void icmp_reply(struct icmp_bxm *icmp_param, struct sk_buff *skb) { struct ipcm_cookie ipc; struct rtable *rt = skb_rtable(skb); - struct net *net = dev_net(rt->u.dst.dev); + struct net *net = dev_net(rt->dst.dev); struct sock *sk; struct inet_sock *inet; __be32 daddr; @@ -427,7 +429,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info) if (!rt) goto out; - net = dev_net(rt->u.dst.dev); + net = dev_net(rt->dst.dev); /* * Find the original header. It is expected to be valid, of course. @@ -596,9 +598,9 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info) /* Ugh! */ orefdst = skb_in->_skb_refdst; /* save old refdst */ err = ip_route_input(skb_in, fl.fl4_dst, fl.fl4_src, - RT_TOS(tos), rt2->u.dst.dev); + RT_TOS(tos), rt2->dst.dev); - dst_release(&rt2->u.dst); + dst_release(&rt2->dst); rt2 = skb_rtable(skb_in); skb_in->_skb_refdst = orefdst; /* restore old refdst */ } @@ -610,7 +612,7 @@ void icmp_send(struct sk_buff *skb_in, int type, int code, __be32 info) XFRM_LOOKUP_ICMP); switch (err) { case 0: - dst_release(&rt->u.dst); + dst_release(&rt->dst); rt = rt2; break; case -EPERM: @@ -629,7 +631,7 @@ route_done: /* RFC says return as much as we can without exceeding 576 bytes. */ - room = dst_mtu(&rt->u.dst); + room = dst_mtu(&rt->dst); if (room > 576) room = 576; room -= sizeof(struct iphdr) + icmp_param.replyopts.optlen; @@ -647,6 +649,7 @@ out_unlock: icmp_xmit_unlock(sk); out:; } +EXPORT_SYMBOL(icmp_send); /* @@ -925,6 +928,7 @@ static void icmp_address(struct sk_buff *skb) /* * RFC1812 (4.3.3.9). A router SHOULD listen all replies, and complain * loudly if an inconsistency is found. + * called with rcu_read_lock() */ static void icmp_address_reply(struct sk_buff *skb) @@ -935,12 +939,12 @@ static void icmp_address_reply(struct sk_buff *skb) struct in_ifaddr *ifa; if (skb->len < 4 || !(rt->rt_flags&RTCF_DIRECTSRC)) - goto out; + return; - in_dev = in_dev_get(dev); + in_dev = __in_dev_get_rcu(dev); if (!in_dev) - goto out; - rcu_read_lock(); + return; + if (in_dev->ifa_list && IN_DEV_LOG_MARTIANS(in_dev) && IN_DEV_FORWARD(in_dev)) { @@ -958,9 +962,6 @@ static void icmp_address_reply(struct sk_buff *skb) mp, dev->name, &rt->rt_src); } } - rcu_read_unlock(); - in_dev_put(in_dev); -out:; } static void icmp_discard(struct sk_buff *skb) @@ -974,7 +975,7 @@ int icmp_rcv(struct sk_buff *skb) { struct icmphdr *icmph; struct rtable *rt = skb_rtable(skb); - struct net *net = dev_net(rt->u.dst.dev); + struct net *net = dev_net(rt->dst.dev); if (!xfrm4_policy_check(NULL, XFRM_POLICY_IN, skb)) { struct sec_path *sp = skb_sec_path(skb); @@ -1216,7 +1217,3 @@ int __init icmp_init(void) { return register_pernet_subsys(&icmp_sk_ops); } - -EXPORT_SYMBOL(icmp_err_convert); -EXPORT_SYMBOL(icmp_send); -EXPORT_SYMBOL(xrlim_allow); diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c index 5fff865a4fa..a1ad0e7180d 100644 --- a/net/ipv4/igmp.c +++ b/net/ipv4/igmp.c @@ -312,7 +312,7 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size) return NULL; } - skb_dst_set(skb, &rt->u.dst); + skb_dst_set(skb, &rt->dst); skb->dev = dev; skb_reserve(skb, LL_RESERVED_SPACE(dev)); @@ -330,7 +330,7 @@ static struct sk_buff *igmpv3_newpack(struct net_device *dev, int size) pip->saddr = rt->rt_src; pip->protocol = IPPROTO_IGMP; pip->tot_len = 0; /* filled in later */ - ip_select_ident(pip, &rt->u.dst, NULL); + ip_select_ident(pip, &rt->dst, NULL); ((u8*)&pip[1])[0] = IPOPT_RA; ((u8*)&pip[1])[1] = 4; ((u8*)&pip[1])[2] = 0; @@ -660,7 +660,7 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc, return -1; } - skb_dst_set(skb, &rt->u.dst); + skb_dst_set(skb, &rt->dst); skb_reserve(skb, LL_RESERVED_SPACE(dev)); @@ -676,7 +676,7 @@ static int igmp_send_report(struct in_device *in_dev, struct ip_mc_list *pmc, iph->daddr = dst; iph->saddr = rt->rt_src; iph->protocol = IPPROTO_IGMP; - ip_select_ident(iph, &rt->u.dst, NULL); + ip_select_ident(iph, &rt->dst, NULL); ((u8*)&iph[1])[0] = IPOPT_RA; ((u8*)&iph[1])[1] = 4; ((u8*)&iph[1])[2] = 0; @@ -916,18 +916,19 @@ static void igmp_heard_query(struct in_device *in_dev, struct sk_buff *skb, read_unlock(&in_dev->mc_list_lock); } +/* called in rcu_read_lock() section */ int igmp_rcv(struct sk_buff *skb) { /* This basically follows the spec line by line -- see RFC1112 */ struct igmphdr *ih; - struct in_device *in_dev = in_dev_get(skb->dev); + struct in_device *in_dev = __in_dev_get_rcu(skb->dev); int len = skb->len; if (in_dev == NULL) goto drop; if (!pskb_may_pull(skb, sizeof(struct igmphdr))) - goto drop_ref; + goto drop; switch (skb->ip_summed) { case CHECKSUM_COMPLETE: @@ -937,7 +938,7 @@ int igmp_rcv(struct sk_buff *skb) case CHECKSUM_NONE: skb->csum = 0; if (__skb_checksum_complete(skb)) - goto drop_ref; + goto drop; } ih = igmp_hdr(skb); @@ -957,7 +958,6 @@ int igmp_rcv(struct sk_buff *skb) break; case IGMP_PIM: #ifdef CONFIG_IP_PIMSM_V1 - in_dev_put(in_dev); return pim_rcv_v1(skb); #endif case IGMPV3_HOST_MEMBERSHIP_REPORT: @@ -971,8 +971,6 @@ int igmp_rcv(struct sk_buff *skb) break; } -drop_ref: - in_dev_put(in_dev); drop: kfree_skb(skb); return 0; @@ -1246,6 +1244,7 @@ void ip_mc_inc_group(struct in_device *in_dev, __be32 addr) out: return; } +EXPORT_SYMBOL(ip_mc_inc_group); /* * Resend IGMP JOIN report; used for bonding. @@ -1268,6 +1267,7 @@ void ip_mc_rejoin_group(struct ip_mc_list *im) igmp_ifc_event(in_dev); #endif } +EXPORT_SYMBOL(ip_mc_rejoin_group); /* * A socket has left a multicast group on device dev @@ -1298,6 +1298,7 @@ void ip_mc_dec_group(struct in_device *in_dev, __be32 addr) } } } +EXPORT_SYMBOL(ip_mc_dec_group); /* Device changing type */ @@ -1427,7 +1428,7 @@ static struct in_device *ip_mc_find_dev(struct net *net, struct ip_mreqn *imr) } if (!dev && !ip_route_output_key(net, &rt, &fl)) { - dev = rt->u.dst.dev; + dev = rt->dst.dev; ip_rt_put(rt); } if (dev) { @@ -1646,8 +1647,7 @@ static int sf_setstate(struct ip_mc_list *pmc) if (dpsf |