From mboxrd@z Thu Jan 1 00:00:00 1970 From: Shirley Ma Subject: [PATCH]Implementation for IPv6 MIB:ipv6InterfaceTable Date: Tue, 14 Oct 2003 10:32:23 -0700 Sender: netdev-bounce@oss.sgi.com Message-ID: <200310141032.23998.mashirle@us.ibm.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8bit Cc: netdev@oss.sgi.com Return-path: To: "David S. Miller" , kuznet@ms2.inr.ac.ru Errors-to: netdev-bounce@oss.sgi.com List-Id: netdev.vger.kernel.org The implementation is based on last call new draft of IP MIBs: http://www.ietf.org/internet-drafts/draft-ietf-ipv6-rfc2011-update-04.txt The patch has been tested against linux-2.6.0-test6-bk3. Please give me your comments. Thanks Shirley Ma IBM Linux Technology Center ====================== diff -urN linux-2.6.0-test6/include/linux/rtnetlink.h linux-2.6.0-test6-ipv6mib1/include/linux/rtnetlink.h --- linux-2.6.0-test6/include/linux/rtnetlink.h 2003-09-27 17:50:40.000000000 -0700 +++ linux-2.6.0-test6-ipv6mib1/include/linux/rtnetlink.h 2003-10-10 15:55:39.000000000 -0700 @@ -555,9 +555,17 @@ IFLA_INET6_CONF, /* sysctl parameters */ IFLA_INET6_STATS, /* statistics */ IFLA_INET6_MCAST, /* MC things. What of them? */ + IFLA_INET6_CACHEINFO, /* time values and max reasm size */ }; -#define IFLA_INET6_MAX IFLA_INET6_MCAST +struct ifla_cacheinfo +{ + __u32 max_reasm_len; + __u32 reachable_time; + __u32 retrans_time; +}; + +#define IFLA_INET6_MAX IFLA_INET6_CACHEINFO /***************************************************************** * Traffic control messages. @@ -608,6 +616,7 @@ #define RTMGRP_IPV6_IFADDR 0x100 #define RTMGRP_IPV6_MROUTE 0x200 #define RTMGRP_IPV6_ROUTE 0x400 +#define RTMGRP_IPV6_IFINFO 0x800 #define RTMGRP_DECnet_IFADDR 0x1000 #define RTMGRP_DECnet_ROUTE 0x4000 diff -urN linux-2.6.0-test6/include/net/neighbour.h linux-2.6.0-test6-ipv6mib1/include/net/neighbour.h --- linux-2.6.0-test6/include/net/neighbour.h 2003-09-27 17:51:07.000000000 -0700 +++ linux-2.6.0-test6-ipv6mib1/include/net/neighbour.h 2003-10-09 10:36:56.000000000 -0700 @@ -47,6 +47,9 @@ #include #include +#ifdef CONFIG_SYSCTL +#include +#endif #define NUD_IN_TIMER (NUD_INCOMPLETE|NUD_DELAY|NUD_PROBE) #define NUD_VALID (NUD_PERMANENT|NUD_NOARP|NUD_REACHABLE|NUD_PROBE|NUD_STALE|NUD_DELAY) @@ -206,8 +209,11 @@ extern int neigh_delete(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); extern void neigh_app_ns(struct neighbour *n); -extern int neigh_sysctl_register(struct net_device *dev, struct neigh_parms *p, - int p_id, int pdev_id, char *p_name); +extern int neigh_sysctl_register(struct net_device *dev, + struct neigh_parms *p, + int p_id, int pdev_id, + char *p_name, + proc_handler *proc_handler); extern void neigh_sysctl_unregister(struct neigh_parms *p); /* diff -urN linux-2.6.0-test6/net/core/neighbour.c linux-2.6.0-test6-ipv6mib1/net/core/neighbour.c --- linux-2.6.0-test6/net/core/neighbour.c 2003-10-07 16:36:53.000000000 -0700 +++ linux-2.6.0-test6-ipv6mib1/net/core/neighbour.c 2003-10-09 11:24:05.000000000 -0700 @@ -1625,7 +1625,8 @@ }; int neigh_sysctl_register(struct net_device *dev, struct neigh_parms *p, - int p_id, int pdev_id, char *p_name) + int p_id, int pdev_id, char *p_name, + proc_handler *handler) { struct neigh_sysctl_table *t = kmalloc(sizeof(*t), GFP_KERNEL); @@ -1636,6 +1637,10 @@ t->neigh_vars[1].data = &p->ucast_probes; t->neigh_vars[2].data = &p->app_probes; t->neigh_vars[3].data = &p->retrans_time; + if (handler) { + t->neigh_vars[3].proc_handler = handler; + t->neigh_vars[3].extra1 = dev; + } t->neigh_vars[4].data = &p->base_reachable_time; t->neigh_vars[5].data = &p->delay_probe_time; t->neigh_vars[6].data = &p->gc_staletime; diff -urN linux-2.6.0-test6/net/ipv4/arp.c linux-2.6.0-test6-ipv6mib1/net/ipv4/arp.c --- linux-2.6.0-test6/net/ipv4/arp.c 2003-10-07 16:36:53.000000000 -0700 +++ linux-2.6.0-test6-ipv6mib1/net/ipv4/arp.c 2003-10-07 13:52:32.000000000 -0700 @@ -1123,7 +1123,7 @@ arp_proc_init(); #ifdef CONFIG_SYSCTL neigh_sysctl_register(NULL, &arp_tbl.parms, NET_IPV4, - NET_IPV4_NEIGH, "ipv4"); + NET_IPV4_NEIGH, "ipv4", NULL); #endif register_netdevice_notifier(&arp_netdev_notifier); } diff -urN linux-2.6.0-test6/net/ipv4/devinet.c linux-2.6.0-test6-ipv6mib1/net/ipv4/devinet.c --- linux-2.6.0-test6/net/ipv4/devinet.c 2003-10-07 16:36:53.000000000 -0700 +++ linux-2.6.0-test6-ipv6mib1/net/ipv4/devinet.c 2003-10-07 13:52:32.000000000 -0700 @@ -155,7 +155,7 @@ dev_hold(dev); #ifdef CONFIG_SYSCTL neigh_sysctl_register(dev, in_dev->arp_parms, NET_IPV4, - NET_IPV4_NEIGH, "ipv4"); + NET_IPV4_NEIGH, "ipv4", NULL); #endif write_lock_bh(&inetdev_lock); dev->ip_ptr = in_dev; diff -urN linux-2.6.0-test6/net/ipv6/addrconf.c linux-2.6.0-test6-ipv6mib1/net/ipv6/addrconf.c --- linux-2.6.0-test6/net/ipv6/addrconf.c 2003-09-27 17:51:02.000000000 -0700 +++ linux-2.6.0-test6-ipv6mib1/net/ipv6/addrconf.c 2003-10-10 15:47:25.000000000 -0700 @@ -92,7 +92,9 @@ #define ADBG(x) #endif +void inet6_ifinfo_notify(int event, struct inet6_dev *idev); #ifdef CONFIG_SYSCTL +extern int ndisc_ifinfo_sysctl_change(ctl_table *ctl, int write, struct file * filp, void __user *buffer, size_t *lenp); static void addrconf_sysctl_register(struct inet6_dev *idev, struct ipv6_devconf *p); static void addrconf_sysctl_unregister(struct ipv6_devconf *p); #endif @@ -372,7 +374,8 @@ ipv6_mc_init_dev(ndev); #ifdef CONFIG_SYSCTL - neigh_sysctl_register(dev, ndev->nd_parms, NET_IPV6, NET_IPV6_NEIGH, "ipv6"); + neigh_sysctl_register(dev, ndev->nd_parms, NET_IPV6, + NET_IPV6_NEIGH, "ipv6", &ndisc_ifinfo_sysctl_change); addrconf_sysctl_register(ndev, &ndev->cnf); #endif } @@ -1848,6 +1851,7 @@ rt6_mtu_change(dev, dev->mtu); idev->cnf.mtu6 = dev->mtu; } + inet6_ifinfo_notify(RTM_NEWLINK, idev); /* If the changed mtu during down is lower than IPV6_MIN_MTU stop IPv6 on this interface. */ @@ -1875,7 +1879,6 @@ case NETDEV_CHANGE: break; }; - return NOTIFY_OK; } @@ -1966,7 +1969,9 @@ ipv6_mc_destroy_dev(idev); else ipv6_mc_down(idev); - + /* Step 5: netlink notification of this interface */ + inet6_ifinfo_notify(RTM_NEWLINK, idev); + /* Shot the device (if unregistered) */ if (how == 1) { @@ -2540,17 +2545,19 @@ #endif } -static int inet6_fill_ifinfo(struct sk_buff *skb, struct net_device *dev, - struct inet6_dev *idev, - int type, u32 pid, u32 seq) +static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev, + u32 pid, u32 seq, int event) { + struct net_device *dev = idev->dev; __s32 *array = NULL; struct ifinfomsg *r; struct nlmsghdr *nlh; unsigned char *b = skb->tail; struct rtattr *subattr; + __u32 mtu = dev->mtu; + struct ifla_cacheinfo ci; - nlh = NLMSG_PUT(skb, pid, seq, type, sizeof(*r)); + nlh = NLMSG_PUT(skb, pid, seq, event, sizeof(*r)); if (pid) nlh->nlmsg_flags |= NLM_F_MULTI; r = NLMSG_DATA(nlh); r->ifi_family = AF_INET6; @@ -2565,6 +2572,13 @@ RTA_PUT(skb, IFLA_IFNAME, strlen(dev->name)+1, dev->name); + if (dev->addr_len) + RTA_PUT(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr); + + RTA_PUT(skb, IFLA_MTU, sizeof(mtu), &mtu); + if (dev->ifindex != dev->iflink) + RTA_PUT(skb, IFLA_LINK, sizeof(int), &dev->iflink); + subattr = (struct rtattr*)skb->tail; RTA_PUT(skb, IFLA_PROTINFO, 0, NULL); @@ -2572,6 +2586,12 @@ /* return the device flags */ RTA_PUT(skb, IFLA_INET6_FLAGS, sizeof(__u32), &idev->if_flags); + /* return interface cacheinfo */ + ci.max_reasm_len = IPV6_MAXPLEN; + ci.reachable_time = idev->nd_parms->reachable_time; + ci.retrans_time = idev->nd_parms->retrans_time; + RTA_PUT(skb, IFLA_INET6_CACHEINFO, sizeof(ci), &ci); + /* return the device sysctl params */ if ((array = kmalloc(DEVCONF_MAX * sizeof(*array), GFP_ATOMIC)) == NULL) goto rtattr_failure; @@ -2606,8 +2626,8 @@ continue; if ((idev = in6_dev_get(dev)) == NULL) continue; - err = inet6_fill_ifinfo(skb, dev, idev, RTM_NEWLINK, - NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq); + err = inet6_fill_ifinfo(skb, idev, NETLINK_CB(cb->skb).pid, + cb->nlh->nlmsg_seq, RTM_NEWLINK); in6_dev_put(idev); if (err <= 0) break; @@ -2618,6 +2638,26 @@ return skb->len; } +void inet6_ifinfo_notify(int event, struct inet6_dev *idev) +{ + struct sk_buff *skb; + /* 128 bytes ?? */ + int size = NLMSG_SPACE(sizeof(struct ifinfomsg)+128); + + skb = alloc_skb(size, GFP_ATOMIC); + if (!skb) { + netlink_set_err(rtnl, 0, RTMGRP_IPV6_IFINFO, ENOBUFS); + return; + } + if (inet6_fill_ifinfo(skb, idev, 0, 0, event) < 0) { + kfree_skb(skb); + netlink_set_err(rtnl, 0, RTMGRP_IPV6_IFINFO, EINVAL); + return; + } + NETLINK_CB(skb).dst_groups = RTMGRP_IPV6_IFINFO; + netlink_broadcast(rtnl, skb, 0, RTMGRP_IPV6_IFINFO, GFP_ATOMIC); +} + static struct rtnetlink_link inet6_rtnetlink_table[RTM_MAX - RTM_BASE + 1] = { [RTM_GETLINK - RTM_BASE] = { .dumpit = inet6_dump_ifinfo, }, [RTM_NEWADDR - RTM_BASE] = { .doit = inet6_rtm_newaddr, }, diff -urN linux-2.6.0-test6/net/ipv6/ndisc.c linux-2.6.0-test6-ipv6mib1/net/ipv6/ndisc.c --- linux-2.6.0-test6/net/ipv6/ndisc.c 2003-09-27 17:50:29.000000000 -0700 +++ linux-2.6.0-test6-ipv6mib1/net/ipv6/ndisc.c 2003-10-10 15:46:03.000000000 -0700 @@ -76,7 +76,7 @@ #include static struct socket *ndisc_socket; - +extern void inet6_ifinfo_notify(int event, struct inet6_dev *idev); static u32 ndisc_hash(const void *pkey, const struct net_device *dev); static int ndisc_constructor(struct neighbour *neigh); static void ndisc_solicit(struct neighbour *neigh, struct sk_buff *skb); @@ -1109,6 +1109,7 @@ if (rtime < HZ/10) rtime = HZ/10; in6_dev->nd_parms->retrans_time = rtime; + inet6_ifinfo_notify(RTM_NEWLINK, in6_dev); } rtime = ntohl(ra_msg->reachable_time); @@ -1122,6 +1123,7 @@ in6_dev->nd_parms->base_reachable_time = rtime; in6_dev->nd_parms->gc_staletime = 3 * rtime; in6_dev->nd_parms->reachable_time = neigh_rand_reach_time(rtime); + inet6_ifinfo_notify(RTM_NEWLINK, in6_dev); } } } @@ -1487,6 +1489,20 @@ .notifier_call = ndisc_netdev_event, }; +#ifdef CONFIG_SYSCTL +int ndisc_ifinfo_sysctl_change(struct ctl_table *ctl, int write, struct file * filp, void __user *buffer, size_t *lenp) +{ + struct net_device *dev = ctl->extra1; + struct inet6_dev *idev; + + if (write && dev && (idev = in6_dev_get(dev)) != NULL) { + inet6_ifinfo_notify(RTM_NEWLINK, idev); + in6_dev_put(idev); + } + return proc_dointvec(ctl, write, filp, buffer, lenp); +} +#endif + int __init ndisc_init(struct net_proto_family *ops) { struct ipv6_pinfo *np; @@ -1517,7 +1533,8 @@ neigh_table_init(&nd_tbl); #ifdef CONFIG_SYSCTL - neigh_sysctl_register(NULL, &nd_tbl.parms, NET_IPV6, NET_IPV6_NEIGH, "ipv6"); + neigh_sysctl_register(NULL, &nd_tbl.parms, NET_IPV6, NET_IPV6_NEIGH, + "ipv6", &ndisc_ifinfo_sysctl_change); #endif register_netdevice_notifier(&ndisc_netdev_notifier);