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 !=