Release 4.11 net/ipv4/inet_diag.c

/*
 * inet_diag.c  Module for monitoring INET transport protocols sockets.
 *
 * Authors:     Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
 *
 *      This program is free software; you can redistribute it and/or
 *      modify it under the terms of the GNU General Public License
 *      as published by the Free Software Foundation; either version
 *      2 of the License, or (at your option) any later version.
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/fcntl.h>
#include <linux/random.h>
#include <linux/slab.h>
#include <linux/cache.h>
#include <linux/init.h>
#include <linux/time.h>

#include <net/icmp.h>
#include <net/tcp.h>
#include <net/ipv6.h>
#include <net/inet_common.h>
#include <net/inet_connection_sock.h>
#include <net/inet_hashtables.h>
#include <net/inet_timewait_sock.h>
#include <net/inet6_hashtables.h>
#include <net/netlink.h>

#include <linux/inet.h>
#include <linux/stddef.h>

#include <linux/inet_diag.h>
#include <linux/sock_diag.h>


static const struct inet_diag_handler **inet_diag_table;


struct inet_diag_entry {
	
const __be32 *saddr;
	
const __be32 *daddr;
	
u16 sport;
	
u16 dport;
	
u16 family;
	
u16 userlocks;
	
u32 ifindex;
	
u32 mark;
};

static DEFINE_MUTEX(inet_diag_table_mutex);



static const struct inet_diag_handler *inet_diag_lock_handler(int proto)
{
	if (!inet_diag_table[proto])
		request_module("net-pf-%d-proto-%d-type-%d-%d", PF_NETLINK,
			       NETLINK_SOCK_DIAG, AF_INET, proto);

	mutex_lock(&inet_diag_table_mutex);
	if (!inet_diag_table[proto])
		return ERR_PTR(-ENOENT);

	return inet_diag_table[proto];
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Herbert Xu
51
85.00%
1
25.00%
Pavel Emelyanov
9
15.00%
3
75.00%
Total
60
100.00%
4
100.00%



static void inet_diag_unlock_handler(const struct inet_diag_handler *handler)
{
	mutex_unlock(&inet_diag_table_mutex);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Herbert Xu
18
100.00%
1
100.00%
Total
18
100.00%
1
100.00%



void inet_diag_msg_common_fill(struct inet_diag_msg *r, struct sock *sk)
{
	r->idiag_family = sk->sk_family;

	r->id.idiag_sport = htons(sk->sk_num);
	r->id.idiag_dport = sk->sk_dport;
	r->id.idiag_if = sk->sk_bound_dev_if;
	sock_diag_save_cookie(sk, r->id.idiag_cookie);

#if IS_ENABLED(CONFIG_IPV6)
	if (sk->sk_family == AF_INET6) {
		*(struct in6_addr *)r->id.idiag_src = sk->sk_v6_rcv_saddr;
		*(struct in6_addr *)r->id.idiag_dst = sk->sk_v6_daddr;
	} else
#endif
	{
	memset(&r->id.idiag_src, 0, sizeof(r->id.idiag_src));
	memset(&r->id.idiag_dst, 0, sizeof(r->id.idiag_dst));

	r->id.idiag_src[0] = sk->sk_rcv_saddr;
	r->id.idiag_dst[0] = sk->sk_daddr;
	}
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Eric Dumazet
188
100.00%
1
100.00%
Total
188
100.00%
1
100.00%


EXPORT_SYMBOL_GPL(inet_diag_msg_common_fill);



static size_t inet_sk_attr_size(void)
{
	return	  nla_total_size(sizeof(struct tcp_info))
		+ nla_total_size(1) /* INET_DIAG_SHUTDOWN */
		+ nla_total_size(1) /* INET_DIAG_TOS */
		+ nla_total_size(1) /* INET_DIAG_TCLASS */
		+ nla_total_size(4) /* INET_DIAG_MARK */
		+ nla_total_size(sizeof(struct inet_diag_meminfo))
		+ nla_total_size(sizeof(struct inet_diag_msg))
		+ nla_total_size(SK_MEMINFO_VARS * sizeof(u32))
		+ nla_total_size(TCP_CA_NAME_MAX)
		+ nla_total_size(sizeof(struct tcpvegas_info))
		+ 64;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Eric Dumazet
80
93.02%
1
50.00%
Lorenzo Colitti
6
6.98%
1
50.00%
Total
86
100.00%
2
100.00%



int inet_diag_msg_attrs_fill(struct sock *sk, struct sk_buff *skb,
			     struct inet_diag_msg *r, int ext,
			     struct user_namespace *user_ns,
			     bool net_admin)
{
	const struct inet_sock *inet = inet_sk(sk);

	if (nla_put_u8(skb, INET_DIAG_SHUTDOWN, sk->sk_shutdown))
		goto errout;

	/* IPv6 dual-stack sockets use inet->tos for IPv4 connections,
         * hence this needs to be included regardless of socket family.
         */
	if (ext & (1 << (INET_DIAG_TOS - 1)))
		if (nla_put_u8(skb, INET_DIAG_TOS, inet->tos) < 0)
			goto errout;

#if IS_ENABLED(CONFIG_IPV6)
	if (r->idiag_family == AF_INET6) {
		if (ext & (1 << (INET_DIAG_TCLASS - 1)))
			if (nla_put_u8(skb, INET_DIAG_TCLASS,
				       inet6_sk(sk)->tclass) < 0)
				goto errout;

		if (((1 << sk->sk_state) & (TCPF_LISTEN | TCPF_CLOSE)) &&
		    nla_put_u8(skb, INET_DIAG_SKV6ONLY, ipv6_only_sock(sk)))
			goto errout;
	}
#endif

	if (net_admin && nla_put_u32(skb, INET_DIAG_MARK, sk->sk_mark))
		goto errout;

	r->idiag_uid = from_kuid_munged(user_ns, sock_i_uid(sk));
	r->idiag_inode = sock_i_ino(sk);

	return 0;
errout:
	return 1;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Pavel Emelyanov
36
15.93%
3
13.04%
Phil Sutter
33
14.60%
2
8.70%
Maciej Żenczykowski
26
11.50%
2
8.70%
Lorenzo Colitti
21
9.29%
1
4.35%
Murali Raja
20
8.85%
1
4.35%
Thomas Graf
18
7.96%
1
4.35%
Stephen Hemminger
17
7.52%
1
4.35%
Xin Long
15
6.64%
1
4.35%
Arnaldo Carvalho de Melo
12
5.31%
5
21.74%
Eric W. Biedermann
9
3.98%
1
4.35%
David S. Miller
9
3.98%
2
8.70%
Eric Dumazet
5
2.21%
2
8.70%
Linus Torvalds
5
2.21%
1
4.35%
Total
226
100.00%
23
100.00%


EXPORT_SYMBOL_GPL(inet_diag_msg_attrs_fill);



int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
		      struct sk_buff *skb, const struct inet_diag_req_v2 *req,
		      struct user_namespace *user_ns,
		      u32 portid, u32 seq, u16 nlmsg_flags,
		      const struct nlmsghdr *unlh,
		      bool net_admin)
{
	const struct tcp_congestion_ops *ca_ops;
	const struct inet_diag_handler *handler;
	int ext = req->idiag_ext;
	struct inet_diag_msg *r;
	struct nlmsghdr  *nlh;
	struct nlattr *attr;
	void *info = NULL;

	handler = inet_diag_table[req->sdiag_protocol];
	BUG_ON(!handler);

	nlh = nlmsg_put(skb, portid, seq, unlh->nlmsg_type, sizeof(*r),
			nlmsg_flags);
	if (!nlh)
		return -EMSGSIZE;

	r = nlmsg_data(nlh);
	BUG_ON(!sk_fullsock(sk));

	inet_diag_msg_common_fill(r, sk);
	r->idiag_state = sk->sk_state;
	r->idiag_timer = 0;
	r->idiag_retrans = 0;

	if (inet_diag_msg_attrs_fill(sk, skb, r, ext, user_ns, net_admin))
		goto errout;

	if (ext & (1 << (INET_DIAG_MEMINFO - 1))) {
		struct inet_diag_meminfo minfo = {
			.idiag_rmem = sk_rmem_alloc_get(sk),
			.idiag_wmem = sk->sk_wmem_queued,
			.idiag_fmem = sk->sk_forward_alloc,
			.idiag_tmem = sk_wmem_alloc_get(sk),
                };

		if (nla_put(skb, INET_DIAG_MEMINFO, sizeof(minfo), &minfo) < 0)
			goto errout;
	}

	if (ext & (1 << (INET_DIAG_SKMEMINFO - 1)))
		if (sock_diag_put_meminfo(sk, skb, INET_DIAG_SKMEMINFO))
			goto errout;

	/*
         * RAW sockets might have user-defined protocols assigned,
         * so report the one supplied on socket creation.
         */
	if (sk->sk_type == SOCK_RAW) {
		if (nla_put_u8(skb, INET_DIAG_PROTOCOL, sk->sk_protocol))
			goto errout;
	}

	if (!icsk) {
		handler->idiag_get_info(sk, r, NULL);
		goto out;
	}

	if (icsk->icsk_pending == ICSK_TIME_RETRANS ||
	    icsk->icsk_pending == ICSK_TIME_REO_TIMEOUT ||
	    icsk->icsk_pending == ICSK_TIME_LOSS_PROBE) {
		r->idiag_timer = 1;
		r->idiag_retrans = icsk->icsk_retransmits;
		r->idiag_expires =
			jiffies_to_msecs(icsk->icsk_timeout - jiffies);
	} else if (icsk->icsk_pending == ICSK_TIME_PROBE0) {
		r->idiag_timer = 4;
		r->idiag_retrans = icsk->icsk_probes_out;
		r->idiag_expires =
			jiffies_to_msecs(icsk->icsk_timeout - jiffies);
	} else if (timer_pending(&sk->sk_timer)) {
		r->idiag_timer = 2;
		r->idiag_retrans = icsk->icsk_probes_out;
		r->idiag_expires =
			jiffies_to_msecs(sk->sk_timer.expires - jiffies);
	} else {
		r->idiag_timer = 0;
		r->idiag_expires = 0;
	}

	if ((ext & (1 << (INET_DIAG_INFO - 1))) && handler->idiag_info_size) {
		attr = nla_reserve_64bit(skb, INET_DIAG_INFO,
					 handler->idiag_info_size,
					 INET_DIAG_PAD);
		if (!attr)
			goto errout;

		info = nla_data(attr);
	}

	if (ext & (1 << (INET_DIAG_CONG - 1))) {
		int err = 0;

		rcu_read_lock();
		ca_ops = READ_ONCE(icsk->icsk_ca_ops);
		if (ca_ops)
			err = nla_put_string(skb, INET_DIAG_CONG, ca_ops->name);
		rcu_read_unlock();
		if (err < 0)
			goto errout;
	}

	handler->idiag_get_info(sk, r, info);

	if (sk->sk_state < TCP_TIME_WAIT) {
		union tcp_cc_info info;
		size_t sz = 0;
		int attr;

		rcu_read_lock();
		ca_ops = READ_ONCE(icsk->icsk_ca_ops);
		if (ca_ops && ca_ops->get_info)
			sz = ca_ops->get_info(sk, ext, &attr, &info);
		rcu_read_unlock();
		if (sz && nla_put(skb, attr, sz, &info) < 0)
			goto errout;
	}

out:
	nlmsg_end(skb, nlh);
	return 0;

errout:
	nlmsg_cancel(skb, nlh);
	return -EMSGSIZE;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Xin Long
202
27.82%
2
6.90%
Pavel Emelyanov
107
14.74%
2
6.90%
Eric Dumazet
90
12.40%
3
10.34%
Stephen Hemminger
89
12.26%
5
17.24%
Thomas Graf
80
11.02%
1
3.45%
Linus Torvalds
49
6.75%
1
3.45%
Arnaldo Carvalho de Melo
41
5.65%
6
20.69%
Cyrill V. Gorcunov
27
3.72%
1
3.45%
Craig Gallek
9
1.24%
1
3.45%
Shan Wei
8
1.10%
1
3.45%
Nandita Dukkipati
6
0.83%
1
3.45%
Yuchung Cheng
6
0.83%
1
3.45%
Lorenzo Colitti
5
0.69%
1
3.45%
Johannes Berg
3
0.41%
1
3.45%
Nicolas Dichtel
3
0.41%
1
3.45%
Patrick McHardy
1
0.14%
1
3.45%
Total
726
100.00%
29
100.00%


EXPORT_SYMBOL_GPL(inet_sk_diag_fill);



static int inet_csk_diag_fill(struct sock *sk,
			      struct sk_buff *skb,
			      const struct inet_diag_req_v2 *req,
			      struct user_namespace *user_ns,
			      u32 portid, u32 seq, u16 nlmsg_flags,
			      const struct nlmsghdr *unlh,
			      bool net_admin)
{
	return inet_sk_diag_fill(sk, inet_csk(sk), skb, req, user_ns,
				 portid, seq, nlmsg_flags, unlh, net_admin);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Pavel Emelyanov
57
79.17%
2
33.33%
Eric W. Biedermann
9
12.50%
2
33.33%
Lorenzo Colitti
5
6.94%
1
16.67%
Eric Dumazet
1
1.39%
1
16.67%
Total
72
100.00%
6
100.00%



static int inet_twsk_diag_fill(struct sock *sk,
			       struct sk_buff *skb,
			       u32 portid, u32 seq, u16 nlmsg_flags,
			       const struct nlmsghdr *unlh)
{
	struct inet_timewait_sock *tw = inet_twsk(sk);
	struct inet_diag_msg *r;
	struct nlmsghdr *nlh;
	long tmo;

	nlh = nlmsg_put(skb, portid, seq, unlh->nlmsg_type, sizeof(*r),
			nlmsg_flags);
	if (!nlh)
		return -EMSGSIZE;

	r = nlmsg_data(nlh);
	BUG_ON(tw->tw_state != TCP_TIME_WAIT);

	tmo = tw->tw_timer.expires - jiffies;
	if (tmo < 0)
		tmo = 0;

	inet_diag_msg_common_fill(r, sk);
	r->idiag_retrans      = 0;

	r->idiag_state	      = tw->tw_substate;
	r->idiag_timer	      = 3;
	r->idiag_expires      = jiffies_to_msecs(tmo);
	r->idiag_rqueue	      = 0;
	r->idiag_wqueue	      = 0;
	r->idiag_uid	      = 0;
	r->idiag_inode	      = 0;

	nlmsg_end(skb, nlh);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Arnaldo Carvalho de Melo
124
64.58%
2
14.29%
Eric Dumazet
28
14.58%
5
35.71%
David S. Miller
12
6.25%
1
7.14%
Thomas Graf
8
4.17%
1
7.14%
Linus Torvalds
8
4.17%
1
7.14%
Daniel Borkmann
5
2.60%
1
7.14%
Johannes Berg
3
1.56%
1
7.14%
Ilpo Järvinen
2
1.04%
1
7.14%
Eric W. Biedermann
2
1.04%
1
7.14%
Total
192
100.00%
14
100.00%



static int inet_req_diag_fill(struct sock *sk, struct sk_buff *skb,
			      u32 portid, u32 seq, u16 nlmsg_flags,
			      const struct nlmsghdr *unlh, bool net_admin)
{
	struct request_sock *reqsk = inet_reqsk(sk);
	struct inet_diag_msg *r;
	struct nlmsghdr *nlh;
	long tmo;

	nlh = nlmsg_put(skb, portid, seq, unlh->nlmsg_type, sizeof(*r),
			nlmsg_flags);
	if (!nlh)
		return -EMSGSIZE;

	r = nlmsg_data(nlh);
	inet_diag_msg_common_fill(r, sk);
	r->idiag_state = TCP_SYN_RECV;
	r->idiag_timer = 1;
	r->idiag_retrans = reqsk->num_retrans;

	BUILD_BUG_ON(offsetof(struct inet_request_sock, ir_cookie) !=
		     offsetof(struct sock, sk_cookie));

	tmo = inet_reqsk(sk)->rsk_timer.expires - jiffies;
	r->idiag_expires = (tmo >= 0) ? jiffies_to_msecs(tmo) : 0;
	r->idiag_rqueue	= 0;
	r->idiag_wqueue	= 0;
	r->idiag_uid	= 0;
	r->idiag_inode	= 0;

	if (net_admin && nla_put_u32(skb, INET_DIAG_MARK,
				     inet_rsk(reqsk)->ir_mark))
		return -EMSGSIZE;

	nlmsg_end(skb, nlh);
	return 0;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Eric Dumazet
192
84.21%
2
66.67%
Lorenzo Colitti
36
15.79%
1
33.33%
Total
228
100.00%
3
100.00%



static int sk_diag_fill(struct sock *sk, struct sk_buff *skb,
			const struct inet_diag_req_v2 *r,
			struct user_namespace *user_ns,
			u32 portid, u32 seq, u16 nlmsg_flags,
			const struct nlmsghdr *unlh, bool net_admin)
{
	if (sk->sk_state == TCP_TIME_WAIT)
		return inet_twsk_diag_fill(sk, skb, portid, seq,
					   nlmsg_flags, unlh);

	if (sk->sk_state == TCP_NEW_SYN_RECV)
		return inet_req_diag_fill(sk, skb, portid, seq,
					  nlmsg_flags, unlh, net_admin);

	return inet_csk_diag_fill(sk, skb, r, user_ns, portid, seq,
				  nlmsg_flags, unlh, net_admin);
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Arnaldo Carvalho de Melo
71
60.68%
1
12.50%
Eric Dumazet
24
20.51%
2
25.00%
Eric W. Biedermann
10
8.55%
2
25.00%
Lorenzo Colitti
7
5.98%
1
12.50%
Pavel Emelyanov
5
4.27%
2
25.00%
Total
117
100.00%
8
100.00%



struct sock *inet_diag_find_one_icsk(struct net *net,
				     struct inet_hashinfo *hashinfo,
				     const struct inet_diag_req_v2 *req)
{
	struct sock *sk;

	rcu_read_lock();
	if (req->sdiag_family == AF_INET)
		sk = inet_lookup(net, hashinfo, NULL, 0, req->id.idiag_dst[0],
				 req->id.idiag_dport, req->id.idiag_src[0],
				 req->id.idiag_sport, req->id.idiag_if);
#if IS_ENABLED(CONFIG_IPV6)
	else if (req->sdiag_family == AF_INET6) {
		if (ipv6_addr_v4mapped((struct in6_addr *)req->id.idiag_dst) &&
		    ipv6_addr_v4mapped((struct in6_addr *)req->id.idiag_src))
			sk = inet_lookup(net, hashinfo, NULL, 0, req->id.idiag_dst[3],
					 req->id.idiag_dport, req->id.idiag_src[3],
					 req->id.idiag_sport, req->id.idiag_if);
		else
			sk = inet6_lookup(net, hashinfo, NULL, 0,
					  (struct in6_addr *)req->id.idiag_dst,
					  req->id.idiag_dport,
					  (struct in6_addr *)req->id.idiag_src,
					  req->id.idiag_sport,
					  req->id.idiag_if);
	}
#endif
	else {
		rcu_read_unlock();
		return ERR_PTR(-EINVAL);
	}
	rcu_read_unlock();
	if (!sk)
		return ERR_PTR(-ENOENT);

	if (sock_diag_check_cookie(sk, req->id.idiag_cookie)) {
		sock_gen_put(sk);
		return ERR_PTR(-ENOENT);
	}

	return sk;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds
95
31.88%
1
4.17%
Eric Dumazet
94
31.54%
5
20.83%
Lorenzo Colitti
41
13.76%
1
4.17%
Arnaldo Carvalho de Melo
29
9.73%
5
20.83%
Pavel Emelyanov
18
6.04%
7
29.17%
Craig Gallek
12
4.03%
1
4.17%
David S. Miller
4
1.34%
2
8.33%
Andrey Vagin
4
1.34%
1
4.17%
Herbert Xu
1
0.34%
1
4.17%
Total
298
100.00%
24
100.00%


EXPORT_SYMBOL_GPL(inet_diag_find_one_icsk);



int inet_diag_dump_one_icsk(struct inet_hashinfo *hashinfo,
			    struct sk_buff *in_skb,
			    const struct nlmsghdr *nlh,
			    const struct inet_diag_req_v2 *req)
{
	struct net *net = sock_net(in_skb->sk);
	struct sk_buff *rep;
	struct sock *sk;
	int err;

	sk = inet_diag_find_one_icsk(net, hashinfo, req);
	if (IS_ERR(sk))
		return PTR_ERR(sk);

	rep = nlmsg_new(inet_sk_attr_size(), GFP_KERNEL);
	if (!rep) {
		err = -ENOMEM;
		goto out;
	}

	err = sk_diag_fill(sk, rep, req,
			   sk_user_ns(NETLINK_CB(in_skb).sk),
			   NETLINK_CB(in_skb).portid,
			   nlh->nlmsg_seq, 0, nlh,
			   netlink_net_capable(in_skb, CAP_NET_ADMIN));
	if (err < 0) {
		WARN_ON(err == -EMSGSIZE);
		nlmsg_free(rep);
		goto out;
	}
	err = netlink_unicast(net->diag_nlsk, rep, NETLINK_CB(in_skb).portid,
			      MSG_DONTWAIT);
	if (err > 0)
		err = 0;

out:
	if (sk)
		sock_gen_put(sk);

	return err;
}
Contributors
Person
Tokens
Prop
Commits
CommitProp
Lorenzo Colitti
78
36.79%
2
12.50%
Linus Torvalds
70
33.02%
1
6.25%
Patrick McHardy
24
11.32%
2
12.50%
Eric W. Biedermann
11
5.19%
2
12.50%
Thomas Graf
9
4.25%
1
6.25%
Pavel Emelyanov
7
3.30%
2
12.50%
Arnaldo Carvalho de Melo
5
2.36%
2
12.50%
Andrey Vagin
3
1.42%
1
6.25%
Eric Dumazet
3
1.42%
2
12.50%
Harald Welte
2
0.94%
1
6.25%
Total
212
100.00%
16
100.00%


EXPORT_SYMBOL_GPL(inet_diag_dump_one_icsk);



static int inet_diag_cmd_exact(int cmd, struct sk_buff *in_skb,
			       const struct nlmsghdr *nlh,
			       const struct inet_diag_req_v2 *req)
{
	const struct inet_diag_handler *handler;
	int err;

	handler = inet_diag_lock_handler(req->sdiag_protocol);
	if (IS_ERR(handler))
		err = PTR_ERR(handler);
	else if (cmd == SOCK_DIAG_BY_FAMILY)
		err = handler->dump_one(in_skb, nlh, req);
	else if (cmd == SOCK_DESTROY && handler->destroy)
		err = handler->destroy(in_skb, req);
	else
		err = -EOPNOTSUPP;
	inet_diag_unlock_handler(handler);

	return err;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Pavel Emelyanov
65
57.02%
3
42.86%
Lorenzo Colitti
39
34.21%
1
14.29%
Herbert Xu
5
4.39%
1
14.29%
Linus Torvalds
4
3.51%
1
14.29%
Eric Dumazet
1
0.88%
1
14.29%
Total
114
100.00%
7
100.00%



static int bitstring_match(const __be32 *a1, const __be32 *a2, int bits)
{
	int words = bits >> 5;

	bits &= 0x1f;

	if (words) {
		if (memcmp(a1, a2, words << 2))
			return 0;
	}
	if (bits) {
		__be32 w1, w2;
		__be32 mask;

		w1 = a1[words];
		w2 = a2[words];

		mask = htonl((0xffffffff) << (32 - bits));

		if ((w1 ^ w2) & mask)
			return 0;
	}

	return 1;
}

Contributors
Person
Tokens
Prop
Commits
CommitProp
Linus Torvalds
104
93.69%
1
33.33%
Al Viro
4
3.60%
1
33.33%
Stephen Hemminger
3
2.70%
1
33.33%
Total
111
100.00%
3
100.00%



static int inet_diag_bc_run(const struct nlattr *_bc,
			    const struct inet_diag_entry *entry)
{
	const void *bc = nla_data(_bc);
	int len = nla_len(_bc);

	while (len > 0) {
		int yes = 1;
		const struct inet_diag_bc_op *op = bc;

		switch (op->code) {
		case INET_DIAG_BC_NOP:
			break;
		case INET_DIAG_BC_JMP:
			yes = 0;
			break;
		case INET_DIAG_BC_S_GE:
			yes = entry->sport >= op[1].no;
			break;
		case INET_DIAG_BC_S_LE:
			yes = entry->sport <= op[1].no;
			break;
		case INET_DIAG_BC_D_GE:
			yes = entry->dport >= op[1].no;
			break;
		case INET_DIAG_BC_D_LE:
			yes = entry->dport <= op[1].no;
			break;
		case INET_DIAG_BC_AUTO:
			yes = !(entry->userlocks & SOCK_BINDPORT_LOCK);
			break;
		case INET_DIAG_BC_S_COND:
		case INET_DIAG_BC_D_COND: {
			const struct inet_diag_hostcond *cond;
			const __be32 *addr;

			cond = (const struct inet_diag_hostcond *)(op + 1);
			if (cond->port !=