From 6ed2533e55889943c478d11b1f63aaed2fd767cc Mon Sep 17 00:00:00 2001 From: Jianjun Kong Date: Mon, 3 Nov 2008 00:25:16 -0800 Subject: net: clean up net/ipv4/fib_frontend.c fib_hash.c ip_gre.c Signed-off-by: Jianjun Kong Signed-off-by: David S. Miller --- net/ipv4/ip_gre.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) (limited to 'net/ipv4/ip_gre.c') diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 85c487b8572..191ef758813 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -371,7 +371,7 @@ static void ipgre_err(struct sk_buff *skb, u32 info) by themself??? */ - struct iphdr *iph = (struct iphdr*)skb->data; + struct iphdr *iph = (struct iphdr *)skb->data; __be16 *p = (__be16*)(skb->data+(iph->ihl<<2)); int grehlen = (iph->ihl<<2) + 4; const int type = icmp_hdr(skb)->type; @@ -632,7 +632,7 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) if (dev->header_ops && dev->type == ARPHRD_IPGRE) { gre_hlen = 0; - tiph = (struct iphdr*)skb->data; + tiph = (struct iphdr *)skb->data; } else { gre_hlen = tunnel->hlen; tiph = &tunnel->parms.iph; @@ -660,7 +660,7 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) if (neigh == NULL) goto tx_error; - addr6 = (struct in6_addr*)&neigh->primary_key; + addr6 = (struct in6_addr *)&neigh->primary_key; addr_type = ipv6_addr_type(addr6); if (addr_type == IPV6_ADDR_ANY) { @@ -726,7 +726,7 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) } #ifdef CONFIG_IPV6 else if (skb->protocol == htons(ETH_P_IPV6)) { - struct rt6_info *rt6 = (struct rt6_info*)skb->dst; + struct rt6_info *rt6 = (struct rt6_info *)skb->dst; if (rt6 && mtu < dst_mtu(skb->dst) && mtu >= IPV6_MIN_MTU) { if ((tunnel->parms.iph.daddr && @@ -800,7 +800,7 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev) iph->ttl = old_iph->ttl; #ifdef CONFIG_IPV6 else if (skb->protocol == htons(ETH_P_IPV6)) - iph->ttl = ((struct ipv6hdr*)old_iph)->hop_limit; + iph->ttl = ((struct ipv6hdr *)old_iph)->hop_limit; #endif else iph->ttl = dst_metric(&rt->u.dst, RTAX_HOPLIMIT); @@ -962,7 +962,7 @@ ipgre_tunnel_ioctl (struct net_device *dev, struct ifreq *ifr, int cmd) break; } } else { - unsigned nflags=0; + unsigned nflags = 0; t = netdev_priv(dev); @@ -1104,7 +1104,7 @@ static int ipgre_header(struct sk_buff *skb, struct net_device *dev, static int ipgre_header_parse(const struct sk_buff *skb, unsigned char *haddr) { - struct iphdr *iph = (struct iphdr*) skb_mac_header(skb); + struct iphdr *iph = (struct iphdr *) skb_mac_header(skb); memcpy(haddr, &iph->saddr, 4); return 4; } -- cgit v1.2.3 From b8c26a33c8b6f0a150e9cb38ed80b890be55395c Mon Sep 17 00:00:00 2001 From: Stephen Hemminger Date: Thu, 20 Nov 2008 20:34:29 -0800 Subject: ipgre: convert to netdevice_ops Convert ipgre tunnel to netdevice ops. Signed-off-by: Stephen Hemminger Signed-off-by: David S. Miller --- net/ipv4/ip_gre.c | 42 ++++++++++++++++++++++++++---------------- 1 file changed, 26 insertions(+), 16 deletions(-) (limited to 'net/ipv4/ip_gre.c') diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index 191ef758813..bf5b338f134 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -126,8 +126,6 @@ static int ipgre_tunnel_bind_dev(struct net_device *dev); /* Fallback tunnel: no source, no destination, no key, no options */ -static int ipgre_fb_tunnel_init(struct net_device *dev); - #define HASH_SIZE 16 static int ipgre_net_id; @@ -1142,6 +1140,7 @@ static int ipgre_open(struct net_device *dev) static int ipgre_close(struct net_device *dev) { struct ip_tunnel *t = netdev_priv(dev); + if (ipv4_is_multicast(t->parms.iph.daddr) && t->mlink) { struct in_device *in_dev; in_dev = inetdev_by_index(dev_net(dev), t->mlink); @@ -1155,14 +1154,22 @@ static int ipgre_close(struct net_device *dev) #endif +static const struct net_device_ops ipgre_netdev_ops = { + .ndo_init = ipgre_tunnel_init, + .ndo_uninit = ipgre_tunnel_uninit, +#ifdef CONFIG_NET_IPGRE_BROADCAST + .ndo_open = ipgre_open, + .ndo_stop = ipgre_close, +#endif + .ndo_start_xmit = ipgre_tunnel_xmit, + .ndo_do_ioctl = ipgre_tunnel_ioctl, + .ndo_change_mtu = ipgre_tunnel_change_mtu, +}; + static void ipgre_tunnel_setup(struct net_device *dev) { - dev->init = ipgre_tunnel_init; - dev->uninit = ipgre_tunnel_uninit; + dev->netdev_ops = &ipgre_netdev_ops; dev->destructor = free_netdev; - dev->hard_start_xmit = ipgre_tunnel_xmit; - dev->do_ioctl = ipgre_tunnel_ioctl; - dev->change_mtu = ipgre_tunnel_change_mtu; dev->type = ARPHRD_IPGRE; dev->needed_headroom = LL_MAX_HEADER + sizeof(struct iphdr) + 4; @@ -1194,8 +1201,6 @@ static int ipgre_tunnel_init(struct net_device *dev) return -EINVAL; dev->flags = IFF_BROADCAST; dev->header_ops = &ipgre_header_ops; - dev->open = ipgre_open; - dev->stop = ipgre_close; } #endif } else @@ -1204,7 +1209,7 @@ static int ipgre_tunnel_init(struct net_device *dev) return 0; } -static int ipgre_fb_tunnel_init(struct net_device *dev) +static void ipgre_fb_tunnel_init(struct net_device *dev) { struct ip_tunnel *tunnel = netdev_priv(dev); struct iphdr *iph = &tunnel->parms.iph; @@ -1220,7 +1225,6 @@ static int ipgre_fb_tunnel_init(struct net_device *dev) dev_hold(dev); ign->tunnels_wc[0] = tunnel; - return 0; } @@ -1265,7 +1269,7 @@ static int ipgre_init_net(struct net *net) goto err_alloc_dev; } - ign->fb_tunnel_dev->init = ipgre_fb_tunnel_init; + ipgre_fb_tunnel_init(ign->fb_tunnel_dev); dev_net_set(ign->fb_tunnel_dev, net); ign->fb_tunnel_dev->rtnl_link_ops = &ipgre_link_ops; @@ -1397,16 +1401,22 @@ static int ipgre_tap_init(struct net_device *dev) return 0; } +static const struct net_device_ops ipgre_tap_netdev_ops = { + .ndo_init = ipgre_tap_init, + .ndo_uninit = ipgre_tunnel_uninit, + .ndo_start_xmit = ipgre_tunnel_xmit, + .ndo_set_mac_address = eth_mac_addr, + .ndo_validate_addr = eth_validate_addr, + .ndo_change_mtu = ipgre_tunnel_change_mtu, +}; + static void ipgre_tap_setup(struct net_device *dev) { ether_setup(dev); - dev->init = ipgre_tap_init; - dev->uninit = ipgre_tunnel_uninit; + dev->netdev_ops = &ipgre_netdev_ops; dev->destructor = free_netdev; - dev->hard_start_xmit = ipgre_tunnel_xmit; - dev->change_mtu = ipgre_tunnel_change_mtu; dev->iflink = 0; dev->features |= NETIF_F_NETNS_LOCAL; -- cgit v1.2.3 From be77e5930725c3e77bcc0fb1def28e016080d0a1 Mon Sep 17 00:00:00 2001 From: Alexey Dobriyan Date: Sun, 23 Nov 2008 17:26:26 -0800 Subject: net: fix tunnels in netns after ndo_ changes dev_net_set() should be the very first thing after alloc_netdev(). "ndo_" changes turned simple assignment (which is OK to do before netns assignment) into quite non-trivial operation (which is not OK, init_net was used). This leads to incomplete initialisation of tunnel device in netns. BUG: unable to handle kernel NULL pointer dereference at 00000004 IP: [] ip6_tnl_exit_net+0x37/0x4f *pde = 00000000 Oops: 0000 [#1] PREEMPT DEBUG_PAGEALLOC last sysfs file: /sys/class/net/lo/operstate Pid: 10, comm: netns Not tainted (2.6.28-rc6 #1) EIP: 0060:[] EFLAGS: 00010246 CPU: 0 EIP is at ip6_tnl_exit_net+0x37/0x4f EAX: 00000000 EBX: 00000020 ECX: 00000000 EDX: 00000003 ESI: c5caef30 EDI: c782bbe8 EBP: c7909f50 ESP: c7909f48 DS: 007b ES: 007b FS: 0000 GS: 0000 SS: 0068 Process netns (pid: 10, ti=c7908000 task=c7905780 task.ti=c7908000) Stack: c03e75e0 c7390bc8 c7909f60 c0245448 c7390bd8 c7390bf0 c7909fa8 c012577a 00000000 00000002 00000000 c0125736 c782bbe8 c7909f90 c0308fe3 c782bc04 c7390bd4 c0245406 c084b718 c04f0770 c03ad785 c782bbe8 c782bc04 c782bc0c Call Trace: [] ? cleanup_net+0x42/0x82 [] ? run_workqueue+0xd6/0x1ae [] ? run_workqueue+0x92/0x1ae [] ? schedule+0x275/0x285 [] ? cleanup_net+0x0/0x82 [] ? worker_thread+0x81/0x8d [] ? autoremove_wake_function+0x0/0x33 [] ? worker_thread+0x0/0x8d [] ? kthread+0x39/0x5e [] ? kthread+0x0/0x5e [] ? kernel_thread_helper+0x7/0x10 Code: db e8 05 ff ff ff 89 c6 e8 dc 04 f6 ff eb 08 8b 40 04 e8 38 89 f5 ff 8b 44 9e 04 85 c0 75 f0 43 83 fb 20 75 f2 8b 86 84 00 00 00 <8b> 40 04 e8 1c 89 f5 ff e8 98 04 f6 ff 89 f0 e8 f8 63 e6 ff 5b EIP: [] ip6_tnl_exit_net+0x37/0x4f SS:ESP 0068:c7909f48 ---[ end trace 6c2f2328fccd3e0c ]--- Signed-off-by: Alexey Dobriyan Signed-off-by: David S. Miller --- net/ipv4/ip_gre.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'net/ipv4/ip_gre.c') diff --git a/net/ipv4/ip_gre.c b/net/ipv4/ip_gre.c index bf5b338f134..0101521f366 100644 --- a/net/ipv4/ip_gre.c +++ b/net/ipv4/ip_gre.c @@ -1268,9 +1268,9 @@ static int ipgre_init_net(struct net *net) err = -ENOMEM; goto err_alloc_dev; } + dev_net_set(ign->fb_tunnel_dev, net); ipgre_fb_tunnel_init(ign->fb_tunnel_dev); - dev_net_set(ign->fb_tunnel_dev, net); ign->fb_tunnel_dev->rtnl_link_ops = &ipgre_link_ops; if ((err = register_netdev(ign->fb_tunnel_dev))) -- cgit v1.2.3