Release 4.11 net/tipc/netlink_compat.c

/*
 * Copyright (c) 2014, Ericsson AB
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the names of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * Alternatively, this software may be distributed under the terms of the
 * GNU General Public License ("GPL") version 2 as published by the Free
 * Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 */

#include "core.h"
#include "bearer.h"
#include "link.h"
#include "name_table.h"
#include "socket.h"
#include "node.h"
#include "net.h"
#include <net/genetlink.h>
#include <linux/tipc_config.h>

/* The legacy API had an artificial message length limit called
 * ULTRA_STRING_MAX_LEN.
 */

#define ULTRA_STRING_MAX_LEN 32768


#define TIPC_SKB_MAX TLV_SPACE(ULTRA_STRING_MAX_LEN)


#define REPLY_TRUNCATED "<truncated>\n"


struct tipc_nl_compat_msg {
	
u16 cmd;
	
int rep_type;
	
int rep_size;
	
int req_type;
	
struct net *net;
	
struct sk_buff *rep;
	
struct tlv_desc *req;
	
struct sock *dst_sk;
};


struct tipc_nl_compat_cmd_dump {
	
int (*header)(struct tipc_nl_compat_msg *);
	
int (*dumpit)(struct sk_buff *, struct netlink_callback *);
	
int (*format)(struct tipc_nl_compat_msg *msg, struct nlattr **attrs);
};


struct tipc_nl_compat_cmd_doit {
	
int (*doit)(struct sk_buff *skb, struct genl_info *info);
	
int (*transcode)(struct tipc_nl_compat_cmd_doit *cmd,
			 struct sk_buff *skb, struct tipc_nl_compat_msg *msg);
};



static int tipc_skb_tailroom(struct sk_buff *skb)
{
	int tailroom;
	int limit;

	tailroom = skb_tailroom(skb);
	limit = TIPC_SKB_MAX - skb->len;

	if (tailroom < limit)
		return tailroom;

	return limit;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
44
100.00%
1
100.00%
Total
44
100.00%
1
100.00%



static int tipc_add_tlv(struct sk_buff *skb, u16 type, void *data, u16 len)
{
	struct tlv_desc *tlv = (struct tlv_desc *)skb_tail_pointer(skb);

	if (tipc_skb_tailroom(skb) < TLV_SPACE(len))
		return -EMSGSIZE;

	skb_put(skb, TLV_SPACE(len));
	tlv->tlv_type = htons(type);
	tlv->tlv_len = htons(TLV_LENGTH(len));
	if (len && data)
		memcpy(TLV_DATA(tlv), data, len);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
104
100.00%
1
100.00%
Total
104
100.00%
1
100.00%



static void tipc_tlv_init(struct sk_buff *skb, u16 type)
{
	struct tlv_desc *tlv = (struct tlv_desc *)skb->data;

	TLV_SET_LEN(tlv, 0);
	TLV_SET_TYPE(tlv, type);
	skb_put(skb, sizeof(struct tlv_desc));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
53
100.00%
1
100.00%
Total
53
100.00%
1
100.00%



static int tipc_tlv_sprintf(struct sk_buff *skb, const char *fmt, ...)
{
	int n;
	u16 len;
	u32 rem;
	char *buf;
	struct tlv_desc *tlv;
	va_list args;

	rem = tipc_skb_tailroom(skb);

	tlv = (struct tlv_desc *)skb->data;
	len = TLV_GET_LEN(tlv);
	buf = TLV_DATA(tlv) + len;

	va_start(args, fmt);
	n = vscnprintf(buf, rem, fmt, args);
	va_end(args);

	TLV_SET_LEN(tlv, n + len);
	skb_put(skb, n);

	return n;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
117
100.00%
1
100.00%
Total
117
100.00%
1
100.00%



static struct sk_buff *tipc_tlv_alloc(int size)
{
	int hdr_len;
	struct sk_buff *buf;

	size = TLV_SPACE(size);
	hdr_len = nlmsg_total_size(GENL_HDRLEN + TIPC_GENL_HDRLEN);

	buf = alloc_skb(hdr_len + size, GFP_KERNEL);
	if (!buf)
		return NULL;

	skb_reserve(buf, hdr_len);

	return buf;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
64
100.00%
1
100.00%
Total
64
100.00%
1
100.00%



static struct sk_buff *tipc_get_err_tlv(char *str)
{
	int str_len = strlen(str) + 1;
	struct sk_buff *buf;

	buf = tipc_tlv_alloc(TLV_SPACE(str_len));
	if (buf)
		tipc_add_tlv(buf, TIPC_TLV_ERROR_STRING, str, str_len);

	return buf;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
55
100.00%
1
100.00%
Total
55
100.00%
1
100.00%



static int __tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd,
				   struct tipc_nl_compat_msg *msg,
				   struct sk_buff *arg)
{
	int len = 0;
	int err;
	struct sk_buff *buf;
	struct nlmsghdr *nlmsg;
	struct netlink_callback cb;

	memset(&cb, 0, sizeof(cb));
	cb.nlh = (struct nlmsghdr *)arg->data;
	cb.skb = arg;

	buf = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	buf->sk = msg->dst_sk;

	do {
		int rem;

		len = (*cmd->dumpit)(buf, &cb);

		nlmsg_for_each_msg(nlmsg, nlmsg_hdr(buf), len, rem) {
			struct nlattr **attrs;

			err = tipc_nlmsg_parse(nlmsg, &attrs);
			if (err)
				goto err_out;

			err = (*cmd->format)(msg, attrs);
			if (err)
				goto err_out;

			if (tipc_skb_tailroom(msg->rep) <= 1) {
				err = -EMSGSIZE;
				goto err_out;
			}
		}

		skb_reset_tail_pointer(buf);
		buf->len = 0;

	} while (len);

	err = 0;

err_out:
	kfree_skb(buf);

	if (err == -EMSGSIZE) {
		/* The legacy API only considered messages filling
                 * "ULTRA_STRING_MAX_LEN" to be truncated.
                 */
		if ((TIPC_SKB_MAX - msg->rep->len) <= 1) {
			char *tail = skb_tail_pointer(msg->rep);

			if (*tail != '\0')
				sprintf(tail - sizeof(REPLY_TRUNCATED) - 1,
					REPLY_TRUNCATED);
		}

		return 0;
	}

	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
290
100.00%
1
100.00%
Total
290
100.00%
1
100.00%



static int tipc_nl_compat_dumpit(struct tipc_nl_compat_cmd_dump *cmd,
				 struct tipc_nl_compat_msg *msg)
{
	int err;
	struct sk_buff *arg;

	if (msg->req_type && !TLV_CHECK_TYPE(msg->req, msg->req_type))
		return -EINVAL;

	msg->rep = tipc_tlv_alloc(msg->rep_size);
	if (!msg->rep)
		return -ENOMEM;

	if (msg->rep_type)
		tipc_tlv_init(msg->rep, msg->rep_type);

	if (cmd->header)
		(*cmd->header)(msg);

	arg = nlmsg_new(0, GFP_KERNEL);
	if (!arg) {
		kfree_skb(msg->rep);
		return -ENOMEM;
	}

	err = __tipc_nl_compat_dumpit(cmd, msg, arg);
	if (err)
		kfree_skb(msg->rep);

	kfree_skb(arg);

	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
158
100.00%
3
100.00%
Total
158
100.00%
3
100.00%



static int __tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd,
				 struct tipc_nl_compat_msg *msg)
{
	int err;
	struct sk_buff *doit_buf;
	struct sk_buff *trans_buf;
	struct nlattr **attrbuf;
	struct genl_info info;

	trans_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
	if (!trans_buf)
		return -ENOMEM;

	err = (*cmd->transcode)(cmd, trans_buf, msg);
	if (err)
		goto trans_out;

	attrbuf = kmalloc((tipc_genl_family.maxattr + 1) *
			sizeof(struct nlattr *), GFP_KERNEL);
	if (!attrbuf) {
		err = -ENOMEM;
		goto trans_out;
	}

	err = nla_parse(attrbuf, tipc_genl_family.maxattr,
			(const struct nlattr *)trans_buf->data,
			trans_buf->len, NULL);
	if (err)
		goto parse_out;

	doit_buf = alloc_skb(NLMSG_GOODSIZE, GFP_KERNEL);
	if (!doit_buf) {
		err = -ENOMEM;
		goto parse_out;
	}

	doit_buf->sk = msg->dst_sk;

	memset(&info, 0, sizeof(info));
	info.attrs = attrbuf;

	err = (*cmd->doit)(doit_buf, &info);

	kfree_skb(doit_buf);
parse_out:
	kfree(attrbuf);
trans_out:
	kfree_skb(trans_buf);

	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
239
100.00%
3
100.00%
Total
239
100.00%
3
100.00%



static int tipc_nl_compat_doit(struct tipc_nl_compat_cmd_doit *cmd,
			       struct tipc_nl_compat_msg *msg)
{
	int err;

	if (msg->req_type && !TLV_CHECK_TYPE(msg->req, msg->req_type))
		return -EINVAL;

	err = __tipc_nl_compat_doit(cmd, msg);
	if (err)
		return err;

	/* The legacy API considered an empty message a success message */
	msg->rep = tipc_tlv_alloc(0);
	if (!msg->rep)
		return -ENOMEM;

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
81
100.00%
2
100.00%
Total
81
100.00%
2
100.00%



static int tipc_nl_compat_bearer_dump(struct tipc_nl_compat_msg *msg,
				      struct nlattr **attrs)
{
	struct nlattr *bearer[TIPC_NLA_BEARER_MAX + 1];
	int err;

	if (!attrs[TIPC_NLA_BEARER])
		return -EINVAL;

	err = nla_parse_nested(bearer, TIPC_NLA_BEARER_MAX,
			       attrs[TIPC_NLA_BEARER], NULL);
	if (err)
		return err;

	return tipc_add_tlv(msg->rep, TIPC_TLV_BEARER_NAME,
			    nla_data(bearer[TIPC_NLA_BEARER_NAME]),
			    nla_len(bearer[TIPC_NLA_BEARER_NAME]));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
67
73.63%
1
50.00%
Baozeng Ding
24
26.37%
1
50.00%
Total
91
100.00%
2
100.00%



static int tipc_nl_compat_bearer_enable(struct tipc_nl_compat_cmd_doit *cmd,
					struct sk_buff *skb,
					struct tipc_nl_compat_msg *msg)
{
	struct nlattr *prop;
	struct nlattr *bearer;
	struct tipc_bearer_config *b;

	b = (struct tipc_bearer_config *)TLV_DATA(msg->req);

	bearer = nla_nest_start(skb, TIPC_NLA_BEARER);
	if (!bearer)
		return -EMSGSIZE;

	if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, b->name))
		return -EMSGSIZE;

	if (nla_put_u32(skb, TIPC_NLA_BEARER_DOMAIN, ntohl(b->disc_domain)))
		return -EMSGSIZE;

	if (ntohl(b->priority) <= TIPC_MAX_LINK_PRI) {
		prop = nla_nest_start(skb, TIPC_NLA_BEARER_PROP);
		if (!prop)
			return -EMSGSIZE;
		if (nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(b->priority)))
			return -EMSGSIZE;
		nla_nest_end(skb, prop);
	}
	nla_nest_end(skb, bearer);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
173
100.00%
2
100.00%
Total
173
100.00%
2
100.00%



static int tipc_nl_compat_bearer_disable(struct tipc_nl_compat_cmd_doit *cmd,
					 struct sk_buff *skb,
					 struct tipc_nl_compat_msg *msg)
{
	char *name;
	struct nlattr *bearer;

	name = (char *)TLV_DATA(msg->req);

	bearer = nla_nest_start(skb, TIPC_NLA_BEARER);
	if (!bearer)
		return -EMSGSIZE;

	if (nla_put_string(skb, TIPC_NLA_BEARER_NAME, name))
		return -EMSGSIZE;

	nla_nest_end(skb, bearer);

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
86
100.00%
2
100.00%
Total
86
100.00%
2
100.00%



static inline u32 perc(u32 count, u32 total)
{
	return (count * 100 + (total / 2)) / total;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
28
100.00%
2
100.00%
Total
28
100.00%
2
100.00%



static void __fill_bc_link_stat(struct tipc_nl_compat_msg *msg,
				struct nlattr *prop[], struct nlattr *stats[])
{
	tipc_tlv_sprintf(msg->rep, "  Window:%u packets\n",
			 nla_get_u32(prop[TIPC_NLA_PROP_WIN]));

	tipc_tlv_sprintf(msg->rep,
			 "  RX packets:%u fragments:%u/%u bundles:%u/%u\n",
			 nla_get_u32(stats[TIPC_NLA_STATS_RX_INFO]),
			 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]),
			 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]),
			 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]),
			 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED]));

	tipc_tlv_sprintf(msg->rep,
			 "  TX packets:%u fragments:%u/%u bundles:%u/%u\n",
			 nla_get_u32(stats[TIPC_NLA_STATS_TX_INFO]),
			 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]),
			 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]),
			 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]),
			 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED]));

	tipc_tlv_sprintf(msg->rep, "  RX naks:%u defs:%u dups:%u\n",
			 nla_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]),
			 nla_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]),
			 nla_get_u32(stats[TIPC_NLA_STATS_DUPLICATES]));

	tipc_tlv_sprintf(msg->rep, "  TX naks:%u acks:%u dups:%u\n",
			 nla_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]),
			 nla_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]),
			 nla_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED]));

	tipc_tlv_sprintf(msg->rep,
			 "  Congestion link:%u  Send queue max:%u avg:%u",
			 nla_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]),
			 nla_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]),
			 nla_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE]));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
237
100.00%
3
100.00%
Total
237
100.00%
3
100.00%



static int tipc_nl_compat_link_stat_dump(struct tipc_nl_compat_msg *msg,
					 struct nlattr **attrs)
{
	char *name;
	struct nlattr *link[TIPC_NLA_LINK_MAX + 1];
	struct nlattr *prop[TIPC_NLA_PROP_MAX + 1];
	struct nlattr *stats[TIPC_NLA_STATS_MAX + 1];
	int err;

	if (!attrs[TIPC_NLA_LINK])
		return -EINVAL;

	err = nla_parse_nested(link, TIPC_NLA_LINK_MAX, attrs[TIPC_NLA_LINK],
			       NULL);
	if (err)
		return err;

	if (!link[TIPC_NLA_LINK_PROP])
		return -EINVAL;

	err = nla_parse_nested(prop, TIPC_NLA_PROP_MAX,
			       link[TIPC_NLA_LINK_PROP], NULL);
	if (err)
		return err;

	if (!link[TIPC_NLA_LINK_STATS])
		return -EINVAL;

	err = nla_parse_nested(stats, TIPC_NLA_STATS_MAX,
			       link[TIPC_NLA_LINK_STATS], NULL);
	if (err)
		return err;

	name = (char *)TLV_DATA(msg->req);
	if (strcmp(name, nla_data(link[TIPC_NLA_LINK_NAME])) != 0)
		return 0;

	tipc_tlv_sprintf(msg->rep, "\nLink <%s>\n",
			 nla_data(link[TIPC_NLA_LINK_NAME]));

	if (link[TIPC_NLA_LINK_BROADCAST]) {
		__fill_bc_link_stat(msg, prop, stats);
		return 0;
	}

	if (link[TIPC_NLA_LINK_ACTIVE])
		tipc_tlv_sprintf(msg->rep, "  ACTIVE");
	else if (link[TIPC_NLA_LINK_UP])
		tipc_tlv_sprintf(msg->rep, "  STANDBY");
	else
		tipc_tlv_sprintf(msg->rep, "  DEFUNCT");

	tipc_tlv_sprintf(msg->rep, "  MTU:%u  Priority:%u",
			 nla_get_u32(link[TIPC_NLA_LINK_MTU]),
			 nla_get_u32(prop[TIPC_NLA_PROP_PRIO]));

	tipc_tlv_sprintf(msg->rep, "  Tolerance:%u ms  Window:%u packets\n",
			 nla_get_u32(prop[TIPC_NLA_PROP_TOL]),
			 nla_get_u32(prop[TIPC_NLA_PROP_WIN]));

	tipc_tlv_sprintf(msg->rep,
			 "  RX packets:%u fragments:%u/%u bundles:%u/%u\n",
			 nla_get_u32(link[TIPC_NLA_LINK_RX]) -
			 nla_get_u32(stats[TIPC_NLA_STATS_RX_INFO]),
			 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTS]),
			 nla_get_u32(stats[TIPC_NLA_STATS_RX_FRAGMENTED]),
			 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLES]),
			 nla_get_u32(stats[TIPC_NLA_STATS_RX_BUNDLED]));

	tipc_tlv_sprintf(msg->rep,
			 "  TX packets:%u fragments:%u/%u bundles:%u/%u\n",
			 nla_get_u32(link[TIPC_NLA_LINK_TX]) -
			 nla_get_u32(stats[TIPC_NLA_STATS_TX_INFO]),
			 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTS]),
			 nla_get_u32(stats[TIPC_NLA_STATS_TX_FRAGMENTED]),
			 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLES]),
			 nla_get_u32(stats[TIPC_NLA_STATS_TX_BUNDLED]));

	tipc_tlv_sprintf(msg->rep,
			 "  TX profile sample:%u packets  average:%u octets\n",
			 nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_CNT]),
			 nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_TOT]) /
			 nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT]));

	tipc_tlv_sprintf(msg->rep,
			 "  0-64:%u%% -256:%u%% -1024:%u%% -4096:%u%% ",
			 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P0]),
			      nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
			 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P1]),
			      nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
			 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P2]),
			      nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
			 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P3]),
			      nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])));

	tipc_tlv_sprintf(msg->rep, "-16384:%u%% -32768:%u%% -66000:%u%%\n",
			 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P4]),
			      nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
			 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P5]),
			      nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])),
			 perc(nla_get_u32(stats[TIPC_NLA_STATS_MSG_LEN_P6]),
			      nla_get_u32(stats[TIPC_NLA_STATS_MSG_PROF_TOT])));

	tipc_tlv_sprintf(msg->rep,
			 "  RX states:%u probes:%u naks:%u defs:%u dups:%u\n",
			 nla_get_u32(stats[TIPC_NLA_STATS_RX_STATES]),
			 nla_get_u32(stats[TIPC_NLA_STATS_RX_PROBES]),
			 nla_get_u32(stats[TIPC_NLA_STATS_RX_NACKS]),
			 nla_get_u32(stats[TIPC_NLA_STATS_RX_DEFERRED]),
			 nla_get_u32(stats[TIPC_NLA_STATS_DUPLICATES]));

	tipc_tlv_sprintf(msg->rep,
			 "  TX states:%u probes:%u naks:%u acks:%u dups:%u\n",
			 nla_get_u32(stats[TIPC_NLA_STATS_TX_STATES]),
			 nla_get_u32(stats[TIPC_NLA_STATS_TX_PROBES]),
			 nla_get_u32(stats[TIPC_NLA_STATS_TX_NACKS]),
			 nla_get_u32(stats[TIPC_NLA_STATS_TX_ACKS]),
			 nla_get_u32(stats[TIPC_NLA_STATS_RETRANSMITTED]));

	tipc_tlv_sprintf(msg->rep,
			 "  Congestion link:%u  Send queue max:%u avg:%u",
			 nla_get_u32(stats[TIPC_NLA_STATS_LINK_CONGS]),
			 nla_get_u32(stats[TIPC_NLA_STATS_MAX_QUEUE]),
			 nla_get_u32(stats[TIPC_NLA_STATS_AVG_QUEUE]));

	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
689
91.26%
1
50.00%
Baozeng Ding
66
8.74%
1
50.00%
Total
755
100.00%
2
100.00%



static int tipc_nl_compat_link_dump(struct tipc_nl_compat_msg *msg,
				    struct nlattr **attrs)
{
	struct nlattr *link[TIPC_NLA_LINK_MAX + 1];
	struct tipc_link_info link_info;
	int err;

	if (!attrs[TIPC_NLA_LINK])
		return -EINVAL;

	err = nla_parse_nested(link, TIPC_NLA_LINK_MAX, attrs[TIPC_NLA_LINK],
			       NULL);
	if (err)
		return err;

	link_info.dest = nla_get_flag(link[TIPC_NLA_LINK_DEST]);
	link_info.up = htonl(nla_get_flag(link[TIPC_NLA_LINK_UP]));
	nla_strlcpy(link_info.str, link[TIPC_NLA_LINK_NAME],
		    TIPC_MAX_LINK_NAME);

	return tipc_add_tlv(msg->rep, TIPC_TLV_LINK_INFO,
			    &link_info, sizeof(link_info));
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
101
78.91%
1
33.33%
Baozeng Ding
24
18.75%
1
33.33%
Kangjie Lu
3
2.34%
1
33.33%
Total
128
100.00%
3
100.00%



static int __tipc_add_link_prop(struct sk_buff *skb,
				struct tipc_nl_compat_msg *msg,
				struct tipc_link_config *lc)
{
	switch (msg->cmd) {
	case TIPC_CMD_SET_LINK_PRI:
		return nla_put_u32(skb, TIPC_NLA_PROP_PRIO, ntohl(lc->value));
	case TIPC_CMD_SET_LINK_TOL:
		return nla_put_u32(skb, TIPC_NLA_PROP_TOL, ntohl(lc->value));
	case TIPC_CMD_SET_LINK_WINDOW:
		return nla_put_u32(skb, TIPC_NLA_PROP_WIN, ntohl(lc->value));
	}

	return -EINVAL;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Richard Alpe
87
100.00%
2
100.00%
Total
87
100.00%
2
100.00%



static int tipc_nl_compat_media_set(struct sk_buff *skb,
				    struct tipc_nl_compat_msg *msg)
{
	struct nlattr *prop;
	struct nlattr *media;
	struct tipc_link_config *lc;

	lc = (struct tipc_link_config *)TLV_DATA(msg->req);