Release 4.14 net/decnet/dn_neigh.c

// SPDX-License-Identifier: GPL-2.0
/*
 * DECnet       An implementation of the DECnet protocol suite for the LINUX
 *              operating system.  DECnet is implemented using the  BSD Socket
 *              interface as the means of communication with the user level.
 *
 *              DECnet Neighbour Functions (Adjacency Database and
 *                                                        On-Ethernet Cache)
 *
 * Author:      Steve Whitehouse <SteveW@ACM.org>
 *
 *
 * Changes:
 *     Steve Whitehouse     : Fixed router listing routine
 *     Steve Whitehouse     : Added error_report functions
 *     Steve Whitehouse     : Added default router detection
 *     Steve Whitehouse     : Hop counts in outgoing messages
 *     Steve Whitehouse     : Fixed src/dst in outgoing messages so
 *                            forwarding now stands a good chance of
 *                            working.
 *     Steve Whitehouse     : Fixed neighbour states (for now anyway).
 *     Steve Whitehouse     : Made error_report functions dummies. This
 *                            is not the right place to return skbs.
 *     Steve Whitehouse     : Convert to seq_file
 *
 */

#include <linux/net.h>
#include <linux/module.h>
#include <linux/socket.h>
#include <linux/if_arp.h>
#include <linux/slab.h>
#include <linux/if_ether.h>
#include <linux/init.h>
#include <linux/proc_fs.h>
#include <linux/string.h>
#include <linux/netfilter_decnet.h>
#include <linux/spinlock.h>
#include <linux/seq_file.h>
#include <linux/rcupdate.h>
#include <linux/jhash.h>
#include <linux/atomic.h>
#include <net/net_namespace.h>
#include <net/neighbour.h>
#include <net/dst.h>
#include <net/flow.h>
#include <net/dn.h>
#include <net/dn_dev.h>
#include <net/dn_neigh.h>
#include <net/dn_route.h>

static int dn_neigh_construct(struct neighbour *);
static void dn_neigh_error_report(struct neighbour *, struct sk_buff *);
static int dn_neigh_output(struct neighbour *neigh, struct sk_buff *skb);

/*
 * Operations for adding the link layer header.
 */

static const struct neigh_ops dn_neigh_ops = {
	.family =		AF_DECnet,
	.error_report =		dn_neigh_error_report,
	.output =		dn_neigh_output,
	.connected_output =	dn_neigh_output,
};



static u32 dn_neigh_hash(const void *pkey,
			 const struct net_device *dev,
			 __u32 *hash_rnd)
{
	return jhash_2words(*(__u16 *)pkey, 0, hash_rnd[0]);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Eric Dumazet
35
89.74%
1
50.00%
David S. Miller
4
10.26%
1
50.00%
Total
39
100.00%
2
100.00%



static bool dn_key_eq(const struct neighbour *neigh, const void *pkey)
{
	return neigh_key_eq16(neigh, pkey);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Eric W. Biedermann
25
100.00%
1
100.00%
Total
25
100.00%
1
100.00%


struct neigh_table dn_neigh_table = {
	.family =			PF_DECnet,
	.entry_size =			NEIGH_ENTRY_SIZE(sizeof(struct dn_neigh)),
	.key_len =			sizeof(__le16),
	.protocol =			cpu_to_be16(ETH_P_DNA_RT),
	.hash =				dn_neigh_hash,
	.key_eq =			dn_key_eq,
	.constructor =			dn_neigh_construct,
	.id =				"dn_neigh_cache",
	.parms ={
		.tbl =			&dn_neigh_table,
		.reachable_time =	30 * HZ,
		.data = {
			[NEIGH_VAR_MCAST_PROBES] = 0,
			[NEIGH_VAR_UCAST_PROBES] = 0,
			[NEIGH_VAR_APP_PROBES] = 0,
			[NEIGH_VAR_RETRANS_TIME] = 1 * HZ,
			[NEIGH_VAR_BASE_REACHABLE_TIME] = 30 * HZ,
			[NEIGH_VAR_DELAY_PROBE_TIME] = 5 * HZ,
			[NEIGH_VAR_GC_STALETIME] = 60 * HZ,
			[NEIGH_VAR_QUEUE_LEN_BYTES] = SK_WMEM_MAX,
			[NEIGH_VAR_PROXY_QLEN] = 0,
			[NEIGH_VAR_ANYCAST_DELAY] = 0,
			[NEIGH_VAR_PROXY_DELAY] = 0,
			[NEIGH_VAR_LOCKTIME] = 1 * HZ,
                },
        },
	.gc_interval =			30 * HZ,
	.gc_thresh1 =			128,
	.gc_thresh2 =			512,
	.gc_thresh3 =			1024,
};



static int dn_neigh_construct(struct neighbour *neigh)
{
	struct net_device *dev = neigh->dev;
	struct dn_neigh *dn = container_of(neigh, struct dn_neigh, n);
	struct dn_dev *dn_db;
	struct neigh_parms *parms;

	rcu_read_lock();
	dn_db = rcu_dereference(dev->dn_ptr);
	if (dn_db == NULL) {
		rcu_read_unlock();
		return -EINVAL;
	}

	parms = dn_db->neigh_parms;
	if (!parms) {
		rcu_read_unlock();
		return -EINVAL;
	}

	__neigh_parms_put(neigh->parms);
	neigh->parms = neigh_parms_clone(parms);
	rcu_read_unlock();

	neigh->ops = &dn_neigh_ops;
	neigh->nud_state = NUD_NOARP;
	neigh->output = neigh->ops->connected_output;

	if ((dev->type == ARPHRD_IPGRE) || (dev->flags & IFF_POINTOPOINT))
		memcpy(neigh->ha, dev->broadcast, dev->addr_len);
	else if ((dev->type == ARPHRD_ETHER) || (dev->type == ARPHRD_LOOPBACK))
		dn_dn2eth(neigh->ha, dn->addr);
	else {
		net_dbg_ratelimited("Trying to create neigh for hw %d\n",
				    dev->type);
		return -EINVAL;
	}

	/*
         * Make an estimate of the remote block size by assuming that its
         * two less then the device mtu, which it true for ethernet (and
         * other things which support long format headers) since there is
         * an extra length field (of 16 bits) which isn't part of the
         * ethernet headers and which the DECnet specs won't admit is part
         * of the DECnet routing headers either.
         *
         * If we over estimate here its no big deal, the NSP negotiations
         * will prevent us from sending packets which are too large for the
         * remote node to handle. In any case this figure is normally updated
         * by a hello message in most cases.
         */
	dn->blksize = dev->mtu - 2;

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
161
70.93%
3
30.00%
Herbert Xu
48
21.15%
2
20.00%
Kees Cook
7
3.08%
1
10.00%
Steven Whitehouse
6
2.64%
1
10.00%
Paul E. McKenney
3
1.32%
1
10.00%
Eric W. Biedermann
1
0.44%
1
10.00%
Joe Perches
1
0.44%
1
10.00%
Total
227
100.00%
10
100.00%



static void dn_neigh_error_report(struct neighbour *neigh, struct sk_buff *skb)
{
	printk(KERN_DEBUG "dn_neigh_error_report: called\n");
	kfree_skb(skb);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
25
92.59%
1
50.00%
Eric W. Biedermann
2
7.41%
1
50.00%
Total
27
100.00%
2
100.00%



static int dn_neigh_output(struct neighbour *neigh, struct sk_buff *skb)
{
	struct dst_entry *dst = skb_dst(skb);
	struct dn_route *rt = (struct dn_route *)dst;
	struct net_device *dev = neigh->dev;
	char mac_addr[ETH_ALEN];
	unsigned int seq;
	int err;

	dn_dn2eth(mac_addr, rt->rt_local_src);
	do {
		seq = read_seqbegin(&neigh->ha_lock);
		err = dev_hard_header(skb, dev, ntohs(skb->protocol),
				      neigh->ha, mac_addr, skb->len);
	} while (read_seqretry(&neigh->ha_lock, seq));

	if (err >= 0)
		err = dev_queue_xmit(skb);
	else {
		kfree_skb(skb);
		err = -EINVAL;
	}
	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
67
44.67%
3
33.33%
David S. Miller
49
32.67%
1
11.11%
Steven Whitehouse
28
18.67%
2
22.22%
Eric Dumazet
3
2.00%
1
11.11%
Eric W. Biedermann
2
1.33%
1
11.11%
Stephen Hemminger
1
0.67%
1
11.11%
Total
150
100.00%
9
100.00%



static int dn_neigh_output_packet(struct net *net, struct sock *sk, struct sk_buff *skb)
{
	struct dst_entry *dst = skb_dst(skb);
	struct dn_route *rt = (struct dn_route *)dst;
	struct neighbour *neigh = rt->n;

	return neigh->output(neigh, skb);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Eric W. Biedermann
57
91.94%
2
66.67%
David S. Miller
5
8.06%
1
33.33%
Total
62
100.00%
3
100.00%

/*
 * For talking to broadcast devices: Ethernet & PPP
 */


static int dn_long_output(struct neighbour *neigh, struct sock *sk,
			  struct sk_buff *skb)
{
	struct net_device *dev = neigh->dev;
	int headroom = dev->hard_header_len + sizeof(struct dn_long_packet) + 3;
	unsigned char *data;
	struct dn_long_packet *lp;
	struct dn_skb_cb *cb = DN_SKB_CB(skb);


	if (skb_headroom(skb) < headroom) {
		struct sk_buff *skb2 = skb_realloc_headroom(skb, headroom);
		if (skb2 == NULL) {
			net_crit_ratelimited("dn_long_output: no memory\n");
			kfree_skb(skb);
			return -ENOBUFS;
		}
		consume_skb(skb);
		skb = skb2;
		net_info_ratelimited("dn_long_output: Increasing headroom\n");
	}

	data = skb_push(skb, sizeof(struct dn_long_packet) + 3);
	lp = (struct dn_long_packet *)(data+3);

	*((__le16 *)data) = cpu_to_le16(skb->len - 2);
	*(data + 2) = 1 | DN_RT_F_PF; /* Padding */

	lp->msgflg   = DN_RT_PKT_LONG|(cb->rt_flags&(DN_RT_F_IE|DN_RT_F_RQR|DN_RT_F_RTS));
	lp->d_area   = lp->d_subarea = 0;
	dn_dn2eth(lp->d_id, cb->dst);
	lp->s_area   = lp->s_subarea = 0;
	dn_dn2eth(lp->s_id, cb->src);
	lp->nl2      = 0;
	lp->visit_ct = cb->hops & 0x3f;
	lp->s_class  = 0;
	lp->pt       = 0;

	skb_reset_network_header(skb);

	return NF_HOOK(NFPROTO_DECNET, NF_DN_POST_ROUTING,
		       &init_net, sk, skb, NULL, neigh->dev,
		       dn_neigh_output_packet);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
273
91.00%
2
16.67%
David S. Miller
12
4.00%
2
16.67%
Eric W. Biedermann
3
1.00%
1
8.33%
Linus Torvalds
3
1.00%
1
8.33%
Arnaldo Carvalho de Melo
3
1.00%
1
8.33%
Joe Perches
2
0.67%
1
8.33%
Eric Dumazet
1
0.33%
1
8.33%
Harvey Harrison
1
0.33%
1
8.33%
Steven Whitehouse
1
0.33%
1
8.33%
Jan Engelhardt
1
0.33%
1
8.33%
Total
300
100.00%
12
100.00%

/*
 * For talking to pointopoint and multidrop devices: DDCMP and X.25
 */


static int dn_short_output(struct neighbour *neigh, struct sock *sk,
			   struct sk_buff *skb)
{
	struct net_device *dev = neigh->dev;
	int headroom = dev->hard_header_len + sizeof(struct dn_short_packet) + 2;
	struct dn_short_packet *sp;
	unsigned char *data;
	struct dn_skb_cb *cb = DN_SKB_CB(skb);


	if (skb_headroom(skb) < headroom) {
		struct sk_buff *skb2 = skb_realloc_headroom(skb, headroom);
		if (skb2 == NULL) {
			net_crit_ratelimited("dn_short_output: no memory\n");
			kfree_skb(skb);
			return -ENOBUFS;
		}
		consume_skb(skb);
		skb = skb2;
		net_info_ratelimited("dn_short_output: Increasing headroom\n");
	}

	data = skb_push(skb, sizeof(struct dn_short_packet) + 2);
	*((__le16 *)data) = cpu_to_le16(skb->len - 2);
	sp = (struct dn_short_packet *)(data+2);

	sp->msgflg     = DN_RT_PKT_SHORT|(cb->rt_flags&(DN_RT_F_RQR|DN_RT_F_RTS));
	sp->dstnode    = cb->dst;
	sp->srcnode    = cb->src;
	sp->forward    = cb->hops & 0x3f;

	skb_reset_network_header(skb);

	return NF_HOOK(NFPROTO_DECNET, NF_DN_POST_ROUTING,
		       &init_net, sk, skb, NULL, neigh->dev,
		       dn_neigh_output_packet);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
215
88.84%
3
23.08%
David S. Miller
12
4.96%
2
15.38%
Arnaldo Carvalho de Melo
3
1.24%
1
7.69%
Linus Torvalds
3
1.24%
1
7.69%
Eric W. Biedermann
3
1.24%
1
7.69%
Joe Perches
2
0.83%
1
7.69%
Jan Engelhardt
1
0.41%
1
7.69%
Steven Whitehouse
1
0.41%
1
7.69%
Harvey Harrison
1
0.41%
1
7.69%
Eric Dumazet
1
0.41%
1
7.69%
Total
242
100.00%
13
100.00%

/*
 * For talking to DECnet phase III nodes
 * Phase 3 output is the same as short output, execpt that
 * it clears the area bits before transmission.
 */


static int dn_phase3_output(struct neighbour *neigh, struct sock *sk,
			    struct sk_buff *skb)
{
	struct net_device *dev = neigh->dev;
	int headroom = dev->hard_header_len + sizeof(struct dn_short_packet) + 2;
	struct dn_short_packet *sp;
	unsigned char *data;
	struct dn_skb_cb *cb = DN_SKB_CB(skb);

	if (skb_headroom(skb) < headroom) {
		struct sk_buff *skb2 = skb_realloc_headroom(skb, headroom);
		if (skb2 == NULL) {
			net_crit_ratelimited("dn_phase3_output: no memory\n");
			kfree_skb(skb);
			return -ENOBUFS;
		}
		consume_skb(skb);
		skb = skb2;
		net_info_ratelimited("dn_phase3_output: Increasing headroom\n");
	}

	data = skb_push(skb, sizeof(struct dn_short_packet) + 2);
	*((__le16 *)data) = cpu_to_le16(skb->len - 2);
	sp = (struct dn_short_packet *)(data + 2);

	sp->msgflg   = DN_RT_PKT_SHORT|(cb->rt_flags&(DN_RT_F_RQR|DN_RT_F_RTS));
	sp->dstnode  = cb->dst & cpu_to_le16(0x03ff);
	sp->srcnode  = cb->src & cpu_to_le16(0x03ff);
	sp->forward  = cb->hops & 0x3f;

	skb_reset_network_header(skb);

	return NF_HOOK(NFPROTO_DECNET, NF_DN_POST_ROUTING,
		       &init_net, sk, skb, NULL, neigh->dev,
		       dn_neigh_output_packet);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
218
86.51%
3
21.43%
David S. Miller
17
6.75%
3
21.43%
Arnaldo Carvalho de Melo
3
1.19%
1
7.14%
Harvey Harrison
3
1.19%
1
7.14%
Linus Torvalds
3
1.19%
1
7.14%
Eric W. Biedermann
3
1.19%
1
7.14%
Joe Perches
2
0.79%
1
7.14%
Jan Engelhardt
1
0.40%
1
7.14%
Steven Whitehouse
1
0.40%
1
7.14%
Eric Dumazet
1
0.40%
1
7.14%
Total
252
100.00%
14
100.00%



int dn_to_neigh_output(struct net *net, struct sock *sk, struct sk_buff *skb)
{
	struct dst_entry *dst = skb_dst(skb);
	struct dn_route *rt = (struct dn_route *) dst;
	struct neighbour *neigh = rt->n;
	struct dn_neigh *dn = container_of(neigh, struct dn_neigh, n);
	struct dn_dev *dn_db;
	bool use_long;

	rcu_read_lock();
	dn_db = rcu_dereference(neigh->dev->dn_ptr);
	if (dn_db == NULL) {
		rcu_read_unlock();
		return -EINVAL;
	}
	use_long = dn_db->use_long;
	rcu_read_unlock();

	if (dn->flags & DN_NDFLAG_P3)
		return dn_phase3_output(neigh, sk, skb);
	if (use_long)
		return dn_long_output(neigh, sk, skb);
	else
		return dn_short_output(neigh, sk, skb);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Eric W. Biedermann
137
88.39%
2
50.00%
David S. Miller
11
7.10%
1
25.00%
Kees Cook
7
4.52%
1
25.00%
Total
155
100.00%
4
100.00%

/*
 * Unfortunately, the neighbour code uses the device in its hash
 * function, so we don't get any advantage from it. This function
 * basically does a neigh_lookup(), but without comparing the device
 * field. This is required for the On-Ethernet cache
 */

/*
 * Pointopoint link receives a hello message
 */


void dn_neigh_pointopoint_hello(struct sk_buff *skb)
{
	kfree_skb(skb);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
15
100.00%
1
100.00%
Total
15
100.00%
1
100.00%

/*
 * Ethernet router hello message received
 */


int dn_neigh_router_hello(struct net *net, struct sock *sk, struct sk_buff *skb)
{
	struct rtnode_hello_message *msg = (struct rtnode_hello_message *)skb->data;

	struct neighbour *neigh;
	struct dn_neigh *dn;
	struct dn_dev *dn_db;
	__le16 src;

	src = dn_eth2dn(msg->id);

	neigh = __neigh_lookup(&dn_neigh_table, &src, skb->dev, 1);

	dn = container_of(neigh, struct dn_neigh, n);

	if (neigh) {
		write_lock(&neigh->lock);

		neigh->used = jiffies;
		dn_db = rcu_dereference(neigh->dev->dn_ptr);

		if (!(neigh->nud_state & NUD_PERMANENT)) {
			neigh->updated = jiffies;

			if (neigh->dev->type == ARPHRD_ETHER)
				memcpy(neigh->ha, &eth_hdr(skb)->h_source, ETH_ALEN);

			dn->blksize  = le16_to_cpu(msg->blksize);
			dn->priority = msg->priority;

			dn->flags &= ~DN_NDFLAG_P3;

			switch (msg->iinfo & DN_RT_INFO_TYPE) {
			case DN_RT_INFO_L1RT:
				dn->flags &=~DN_NDFLAG_R2;
				dn->flags |= DN_NDFLAG_R1;
				break;
			case DN_RT_INFO_L2RT:
				dn->flags |= DN_NDFLAG_R2;
			}
		}

		/* Only use routers in our area */
		if ((le16_to_cpu(src)>>10) == (le16_to_cpu((decnet_address))>>10)) {
			if (!dn_db->router) {
				dn_db->router = neigh_clone(neigh);
			} else {
				if (msg->priority > ((struct dn_neigh *)dn_db->router)->priority)
					neigh_release(xchg(&dn_db->router, neigh_clone(neigh)));
			}
		}
		write_unlock(&neigh->lock);
		neigh_release(neigh);
	}

	kfree_skb(skb);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
281
84.89%
3
27.27%
Patrick Caulfield
20
6.04%
1
9.09%
Kees Cook
7
2.11%
1
9.09%
David S. Miller
5
1.51%
1
9.09%
Eric W. Biedermann
5
1.51%
1
9.09%
Steven Whitehouse
4
1.21%
1
9.09%
Harvey Harrison
3
0.91%
1
9.09%
Arnaldo Carvalho de Melo
3
0.91%
1
9.09%
Eric Dumazet
3
0.91%
1
9.09%
Total
331
100.00%
11
100.00%

/*
 * Endnode hello message received
 */


int dn_neigh_endnode_hello(struct net *net, struct sock *sk, struct sk_buff *skb)
{
	struct endnode_hello_message *msg = (struct endnode_hello_message *)skb->data;
	struct neighbour *neigh;
	struct dn_neigh *dn;
	__le16 src;

	src = dn_eth2dn(msg->id);

	neigh = __neigh_lookup(&dn_neigh_table, &src, skb->dev, 1);

	dn = container_of(neigh, struct dn_neigh, n);

	if (neigh) {
		write_lock(&neigh->lock);

		neigh->used = jiffies;

		if (!(neigh->nud_state & NUD_PERMANENT)) {
			neigh->updated = jiffies;

			if (neigh->dev->type == ARPHRD_ETHER)
				memcpy(neigh->ha, &eth_hdr(skb)->h_source, ETH_ALEN);
			dn->flags   &= ~(DN_NDFLAG_R1 | DN_NDFLAG_R2);
			dn->blksize  = le16_to_cpu(msg->blksize);
			dn->priority = 0;
		}

		write_unlock(&neigh->lock);
		neigh_release(neigh);
	}

	kfree_skb(skb);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
178
89.00%
3
33.33%
Kees Cook
7
3.50%
1
11.11%
Eric W. Biedermann
5
2.50%
1
11.11%
David S. Miller
5
2.50%
1
11.11%
Arnaldo Carvalho de Melo
3
1.50%
1
11.11%
Harvey Harrison
1
0.50%
1
11.11%
Steven Whitehouse
1
0.50%
1
11.11%
Total
200
100.00%
9
100.00%



static char *dn_find_slot(char *base, int max, int priority)
{
	int i;
	unsigned char *min = NULL;

	base += 6; /* skip first id */

	for(i = 0; i < max; i++) {
		if (!min || (*base < *min))
			min = base;
		base += 7; /* find next priority */
	}

	if (!min)
		return NULL;

	return (*min < priority) ? (min - 6) : NULL;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
93
100.00%
1
100.00%
Total
93
100.00%
1
100.00%


struct elist_cb_state {
	
struct net_device *dev;
	
unsigned char *ptr;
	
unsigned char *rs;
	

int t, n;
};



static void neigh_elist_cb(struct neighbour *neigh, void *_info)
{
	struct elist_cb_state *s = _info;
	struct dn_neigh *dn;

	if (neigh->dev != s->dev)
		return;

	dn = container_of(neigh, struct dn_neigh, n);
	if (!(dn->flags & (DN_NDFLAG_R1|DN_NDFLAG_R2)))
		return;

	if (s->t == s->n)
		s->rs = dn_find_slot(s->ptr, s->n, dn->priority);
	else
		s->t++;
	if (s->rs == NULL)
		return;

	dn_dn2eth(s->rs, dn->addr);
	s->rs += 6;
	*(s->rs) = neigh->nud_state & NUD_CONNECTED ? 0x80 : 0x0;
	*(s->rs) |= dn->priority;
	s->rs++;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David S. Miller
100
62.50%
1
20.00%
Linus Torvalds (pre-git)
38
23.75%
2
40.00%
Steven Whitehouse
15
9.38%
1
20.00%
Kees Cook
7
4.38%
1
20.00%
Total
160
100.00%
5
100.00%



int dn_neigh_elist(struct net_device *dev, unsigned char *ptr, int n)
{
	struct elist_cb_state state;

	state.dev = dev;
	state.t = 0;
	state.n = n;
	state.ptr = ptr;
	state.rs = ptr;

	neigh_for_each(&dn_neigh_table, neigh_elist_cb, &state);

	return state.t;
}


Contributors
Person
Tokens
Prop
Commits
CommitProp
David S. Miller
55
80.88%
1
50.00%
Steven Whitehouse
13
19.12%
1
50.00%
Total
68
100.00%
2
100.00%

#ifdef CONFIG_PROC_FS



static inline void dn_neigh_format_entry(struct seq_file *seq,
					 struct neighbour *n)
{
	struct dn_neigh *dn = container_of(n, struct dn_neigh, n);
	char buf[DN_ASCBUF_LEN];

	read_lock(&n->lock);
	seq_printf(seq, "%-7s %s%s%s   %02x    %02d  %07ld %-8s\n",
		   dn_addr2asc(le16_to_cpu(dn->addr), buf),
		   (dn->flags&DN_NDFLAG_R1) ? "1" : "-",
		   (dn->flags&DN_NDFLAG_R2) ? "2" : "-",
		   (dn->flags&DN_NDFLAG_P3) ? "3" : "-",
		   dn->n.nud_state,
		   refcount_read(&dn->n.refcnt),
		   dn->blksize,
		   (dn->n.dev) ? dn->n.dev->name : "?");
	read_unlock(&n->lock);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
84
57.14%
2
33.33%
Steven Whitehouse
55
37.41%
1
16.67%
Kees Cook
6
4.08%
1
16.67%
Harvey Harrison
1
0.68%
1
16.67%
Elena Reshetova
1
0.68%
1
16.67%
Total
147
100.00%
6
100.00%



static int dn_neigh_seq_show(struct seq_file *seq, void *v)
{
	if (v == SEQ_START_TOKEN) {
		seq_puts(seq, "Addr    Flags State Use Blksize Dev\n");
	} else {
		dn_neigh_format_entry(seq, v);
	}

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Steven Whitehouse
35
81.40%
1
33.33%
Linus Torvalds (pre-git)
7
16.28%
1
33.33%
Joe Perches
1
2.33%
1
33.33%
Total
43
100.00%
3
100.00%



static void *dn_neigh_seq_start(struct seq_file *seq, loff_t *pos)
{
	return neigh_seq_start(seq, pos, &dn_neigh_table,
			       NEIGH_SEQ_NEIGH_ONLY);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
David S. Miller
29
100.00%
1
100.00%
Total
29
100.00%
1
100.00%


static const struct seq_operations dn_neigh_seq_ops = {
	.start = dn_neigh_seq_start,
	.next  = neigh_seq_next,
	.stop  = neigh_seq_stop,
	.show  = dn_neigh_seq_show,
};



static int dn_neigh_seq_open(struct inode *inode, struct file *file)
{
	return seq_open_net(inode, file, &dn_neigh_seq_ops,
			    sizeof(struct neigh_seq_state));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Steven Whitehouse
21
63.64%
1
25.00%
Pavel Emelyanov
7
21.21%
1
25.00%
Eric W. Biedermann
3
9.09%
1
25.00%
Linus Torvalds (pre-git)
2
6.06%
1
25.00%
Total
33
100.00%
4
100.00%


static const struct file_operations dn_neigh_seq_fops = {
	.owner		= THIS_MODULE,
	.open		= dn_neigh_seq_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= seq_release_net,
};

#endif



void __init dn_neigh_init(void)
{
	neigh_table_init(NEIGH_DN_TABLE, &dn_neigh_table);
	proc_create("decnet_neigh", S_IRUGO, init_net.proc_net,
		    &dn_neigh_seq_fops);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
15
50.00%
1
25.00%
Steven Whitehouse
8
26.67%
1
25.00%
Gao Feng
5
16.67%
1
25.00%
Américo Wang
2
6.67%
1
25.00%
Total
30
100.00%
4
100.00%



void __exit dn_neigh_cleanup(void)
{
	remove_proc_entry("decnet_neigh", init_net.proc_net);
	neigh_table_clear(NEIGH_DN_TABLE, &dn_neigh_table);
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
14
56.00%
2
40.00%
Gao Feng
5
20.00%
1
20.00%
Steven Whitehouse
4
16.00%
1
20.00%
Américo Wang
2
8.00%
1
20.00%
Total
25
100.00%
5
100.00%

Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds (pre-git)
1850
60.18%
7
11.48%
David S. Miller
335
10.90%
8
13.11%
Eric W. Biedermann
275
8.95%
7
11.48%
Steven Whitehouse
251
8.17%
4
6.56%
Jiri Pirko
53
1.72%
1
1.64%
Herbert Xu
51
1.66%
2
3.28%
Eric Dumazet
45
1.46%
5
8.20%
Rusty Russell
44
1.43%
1
1.64%
Kees Cook
41
1.33%
1
1.64%
Linus Torvalds
27
0.88%
1
1.64%
Patrick Caulfield
20
0.65%
1
1.64%
Arnaldo Carvalho de Melo
15
0.49%
2
3.28%
Harvey Harrison
10
0.33%
1
1.64%
Gao Feng
10
0.33%
2
3.28%
Hideaki Yoshifuji / 吉藤英明
9
0.29%
3
4.92%
Joe Perches
8
0.26%
2
3.28%
Pavel Emelyanov
7
0.23%
1
1.64%
Américo Wang
4
0.13%
1
1.64%
Tejun Heo
3
0.10%
1
1.64%
Paul E. McKenney
3
0.10%
1
1.64%
Manfred Schwarb
3
0.10%
1
1.64%
Jan Engelhardt
3
0.10%
1
1.64%
Stephen Hemminger
2
0.07%
2
3.28%
Arun Sharma
1
0.03%
1
1.64%
Philippe De Muyter
1
0.03%
1
1.64%
Arjan van de Ven
1
0.03%
1
1.64%
Elena Reshetova
1
0.03%
1
1.64%
Greg Kroah-Hartman
1
0.03%
1
1.64%
Total
3074
100.00%
61
100.00%
Directory: net/decnet

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.