#include <linux/types.h>
#include <linux/socket.h>
#include <linux/kernel.h>
-#include <linux/major.h>
#include <linux/sched.h>
#include <linux/timer.h>
#include <linux/string.h>
struct rtnetlink_link * rtnetlink_links[NPROTO];
-static const int rtm_min[(RTM_MAX+1-RTM_BASE)/4] =
+static const int rtm_min[RTM_NR_FAMILIES] =
{
- NLMSG_LENGTH(sizeof(struct ifinfomsg)),
- NLMSG_LENGTH(sizeof(struct ifaddrmsg)),
- NLMSG_LENGTH(sizeof(struct rtmsg)),
- NLMSG_LENGTH(sizeof(struct ndmsg)),
- NLMSG_LENGTH(sizeof(struct rtmsg)),
- NLMSG_LENGTH(sizeof(struct tcmsg)),
- NLMSG_LENGTH(sizeof(struct tcmsg)),
- NLMSG_LENGTH(sizeof(struct tcmsg)),
- NLMSG_LENGTH(sizeof(struct tcamsg))
+ [RTM_FAM(RTM_NEWLINK)] = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
+ [RTM_FAM(RTM_NEWADDR)] = NLMSG_LENGTH(sizeof(struct ifaddrmsg)),
+ [RTM_FAM(RTM_NEWROUTE)] = NLMSG_LENGTH(sizeof(struct rtmsg)),
+ [RTM_FAM(RTM_NEWNEIGH)] = NLMSG_LENGTH(sizeof(struct ndmsg)),
+ [RTM_FAM(RTM_NEWRULE)] = NLMSG_LENGTH(sizeof(struct rtmsg)),
+ [RTM_FAM(RTM_NEWQDISC)] = NLMSG_LENGTH(sizeof(struct tcmsg)),
+ [RTM_FAM(RTM_NEWTCLASS)] = NLMSG_LENGTH(sizeof(struct tcmsg)),
+ [RTM_FAM(RTM_NEWTFILTER)] = NLMSG_LENGTH(sizeof(struct tcmsg)),
+ [RTM_FAM(RTM_NEWACTION)] = NLMSG_LENGTH(sizeof(struct tcamsg)),
+ [RTM_FAM(RTM_NEWPREFIX)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)),
+ [RTM_FAM(RTM_GETMULTICAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)),
+ [RTM_FAM(RTM_GETANYCAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)),
+ [RTM_FAM(RTM_NEWNEIGHTBL)] = NLMSG_LENGTH(sizeof(struct ndtmsg)),
};
-static const int rta_max[(RTM_MAX+1-RTM_BASE)/4] =
+static const int rta_max[RTM_NR_FAMILIES] =
{
- IFLA_MAX,
- IFA_MAX,
- RTA_MAX,
- NDA_MAX,
- RTA_MAX,
- TCA_MAX,
- TCA_MAX,
- TCA_MAX,
- TCAA_MAX
+ [RTM_FAM(RTM_NEWLINK)] = IFLA_MAX,
+ [RTM_FAM(RTM_NEWADDR)] = IFA_MAX,
+ [RTM_FAM(RTM_NEWROUTE)] = RTA_MAX,
+ [RTM_FAM(RTM_NEWNEIGH)] = NDA_MAX,
+ [RTM_FAM(RTM_NEWRULE)] = RTA_MAX,
+ [RTM_FAM(RTM_NEWQDISC)] = TCA_MAX,
+ [RTM_FAM(RTM_NEWTCLASS)] = TCA_MAX,
+ [RTM_FAM(RTM_NEWTFILTER)] = TCA_MAX,
+ [RTM_FAM(RTM_NEWACTION)] = TCAA_MAX,
+ [RTM_FAM(RTM_NEWNEIGHTBL)] = NDTA_MAX,
};
void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data)
rta->rta_type = attrtype;
rta->rta_len = size;
memcpy(RTA_DATA(rta), data, attrlen);
+ memset(RTA_DATA(rta) + attrlen, 0, RTA_ALIGN(size) - size);
}
size_t rtattr_strlcpy(char *dest, const struct rtattr *rta, size_t size)
{
int err = 0;
- NETLINK_CB(skb).dst_groups = group;
+ NETLINK_CB(skb).dst_group = group;
if (echo)
atomic_inc(&skb->users);
netlink_broadcast(rtnl, skb, pid, group, GFP_KERNEL);
static int rtnetlink_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
- int type, u32 pid, u32 seq, u32 change)
+ int type, u32 pid, u32 seq, u32 change,
+ unsigned int flags)
{
struct ifinfomsg *r;
struct nlmsghdr *nlh;
unsigned char *b = skb->tail;
- nlh = NLMSG_PUT(skb, pid, seq, type, sizeof(*r));
- if (pid) nlh->nlmsg_flags |= NLM_F_MULTI;
+ nlh = NLMSG_NEW(skb, pid, seq, type, sizeof(*r), flags);
r = NLMSG_DATA(nlh);
r->ifi_family = AF_UNSPEC;
+ r->__ifi_pad = 0;
r->ifi_type = dev->type;
r->ifi_index = dev->ifindex;
r->ifi_flags = dev_get_flags(dev);
for (dev=dev_base, idx=0; dev; dev = dev->next, idx++) {
if (idx < s_idx)
continue;
- if (rtnetlink_fill_ifinfo(skb, dev, RTM_NEWLINK, NETLINK_CB(cb->skb).pid, cb->nlh->nlmsg_seq, 0) <= 0)
+ if (rtnetlink_fill_ifinfo(skb, dev, RTM_NEWLINK,
+ NETLINK_CB(cb->skb).pid,
+ cb->nlh->nlmsg_seq, 0,
+ NLM_F_MULTI) <= 0)
break;
}
read_unlock(&dev_base_lock);
if (!skb)
return;
- if (rtnetlink_fill_ifinfo(skb, dev, type, 0, 0, change) < 0) {
+ if (rtnetlink_fill_ifinfo(skb, dev, type, current->pid, 0, change, 0) < 0) {
kfree_skb(skb);
return;
}
- NETLINK_CB(skb).dst_groups = RTMGRP_LINK;
- netlink_broadcast(rtnl, skb, 0, RTMGRP_LINK, GFP_KERNEL);
+ NETLINK_CB(skb).dst_group = RTNLGRP_LINK;
+ netlink_broadcast(rtnl, skb, 0, RTNLGRP_LINK, GFP_KERNEL);
}
static int rtnetlink_done(struct netlink_callback *cb)
/*
* rtnetlink input queue processing routine:
- * - try to acquire shared lock. If it is failed, defer processing.
+ * - process as much as there was in the queue upon entry.
* - feed skbs to rtnetlink_rcv_skb, until it refuse a message,
- * that will occur, when a dump started and/or acquisition of
- * exclusive lock failed.
+ * that will occur, when a dump started.
*/
static void rtnetlink_rcv(struct sock *sk, int len)
{
+ unsigned int qlen = skb_queue_len(&sk->sk_receive_queue);
+
do {
struct sk_buff *skb;
- if (rtnl_shlock_nowait())
- return;
+ rtnl_lock();
+
+ if (qlen > skb_queue_len(&sk->sk_receive_queue))
+ qlen = skb_queue_len(&sk->sk_receive_queue);
- while ((skb = skb_dequeue(&sk->sk_receive_queue)) != NULL) {
+ for (; qlen; qlen--) {
+ skb = skb_dequeue(&sk->sk_receive_queue);
if (rtnetlink_rcv_skb(skb)) {
if (skb->len)
skb_queue_head(&sk->sk_receive_queue,
skb);
- else
+ else {
kfree_skb(skb);
+ qlen--;
+ }
break;
}
kfree_skb(skb);
up(&rtnl_sem);
netdev_run_todo();
- } while (rtnl && rtnl->sk_receive_queue.qlen);
+ } while (qlen);
}
-static struct rtnetlink_link link_rtnetlink_table[RTM_MAX-RTM_BASE+1] =
+static struct rtnetlink_link link_rtnetlink_table[RTM_NR_MSGTYPES] =
{
- [RTM_GETLINK - RTM_BASE] = { .dumpit = rtnetlink_dump_ifinfo },
- [RTM_SETLINK - RTM_BASE] = { .doit = do_setlink },
- [RTM_GETADDR - RTM_BASE] = { .dumpit = rtnetlink_dump_all },
- [RTM_GETROUTE - RTM_BASE] = { .dumpit = rtnetlink_dump_all },
- [RTM_NEWNEIGH - RTM_BASE] = { .doit = neigh_add },
- [RTM_DELNEIGH - RTM_BASE] = { .doit = neigh_delete },
- [RTM_GETNEIGH - RTM_BASE] = { .dumpit = neigh_dump_info }
+ [RTM_GETLINK - RTM_BASE] = { .dumpit = rtnetlink_dump_ifinfo },
+ [RTM_SETLINK - RTM_BASE] = { .doit = do_setlink },
+ [RTM_GETADDR - RTM_BASE] = { .dumpit = rtnetlink_dump_all },
+ [RTM_GETROUTE - RTM_BASE] = { .dumpit = rtnetlink_dump_all },
+ [RTM_NEWNEIGH - RTM_BASE] = { .doit = neigh_add },
+ [RTM_DELNEIGH - RTM_BASE] = { .doit = neigh_delete },
+ [RTM_GETNEIGH - RTM_BASE] = { .dumpit = neigh_dump_info },
+ [RTM_GETRULE - RTM_BASE] = { .dumpit = rtnetlink_dump_all },
+ [RTM_GETNEIGHTBL - RTM_BASE] = { .dumpit = neightbl_dump_info },
+ [RTM_SETNEIGHTBL - RTM_BASE] = { .doit = neightbl_set },
};
static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr)
if (!rta_buf)
panic("rtnetlink_init: cannot allocate rta_buf\n");
- rtnl = netlink_kernel_create(NETLINK_ROUTE, rtnetlink_rcv);
+ rtnl = netlink_kernel_create(NETLINK_ROUTE, RTNLGRP_MAX, rtnetlink_rcv,
+ THIS_MODULE);
if (rtnl == NULL)
panic("rtnetlink_init: cannot initialize rtnetlink\n");
netlink_set_nonroot(NETLINK_ROUTE, NL_NONROOT_RECV);
projects / linux-2.6 / blobdiff