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Diffstat (limited to 'net/ipv4/tcp_ipv4.c')
-rw-r--r--net/ipv4/tcp_ipv4.c324
1 files changed, 128 insertions, 196 deletions
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index ffe869ac1bcf..a82df6307567 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -5,8 +5,6 @@
*
* Implementation of the Transmission Control Protocol(TCP).
*
- * Version: $Id: tcp_ipv4.c,v 1.240 2002/02/01 22:01:04 davem Exp $
- *
* IPv4 specific functions
*
*
@@ -89,10 +87,14 @@ int sysctl_tcp_low_latency __read_mostly;
#ifdef CONFIG_TCP_MD5SIG
static struct tcp_md5sig_key *tcp_v4_md5_do_lookup(struct sock *sk,
__be32 addr);
-static int tcp_v4_do_calc_md5_hash(char *md5_hash, struct tcp_md5sig_key *key,
- __be32 saddr, __be32 daddr,
- struct tcphdr *th, int protocol,
- unsigned int tcplen);
+static int tcp_v4_md5_hash_hdr(char *md5_hash, struct tcp_md5sig_key *key,
+ __be32 daddr, __be32 saddr, struct tcphdr *th);
+#else
+static inline
+struct tcp_md5sig_key *tcp_v4_md5_do_lookup(struct sock *sk, __be32 addr)
+{
+ return NULL;
+}
#endif
struct inet_hashinfo __cacheline_aligned tcp_hashinfo = {
@@ -172,7 +174,7 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
inet->sport, usin->sin_port, sk, 1);
if (tmp < 0) {
if (tmp == -ENETUNREACH)
- IP_INC_STATS_BH(IPSTATS_MIB_OUTNOROUTES);
+ IP_INC_STATS_BH(sock_net(sk), IPSTATS_MIB_OUTNOROUTES);
return tmp;
}
@@ -340,16 +342,17 @@ void tcp_v4_err(struct sk_buff *skb, u32 info)
struct sock *sk;
__u32 seq;
int err;
+ struct net *net = dev_net(skb->dev);
if (skb->len < (iph->ihl << 2) + 8) {
- ICMP_INC_STATS_BH(ICMP_MIB_INERRORS);
+ ICMP_INC_STATS_BH(net, ICMP_MIB_INERRORS);
return;
}
- sk = inet_lookup(dev_net(skb->dev), &tcp_hashinfo, iph->daddr, th->dest,
+ sk = inet_lookup(net, &tcp_hashinfo, iph->daddr, th->dest,
iph->saddr, th->source, inet_iif(skb));
if (!sk) {
- ICMP_INC_STATS_BH(ICMP_MIB_INERRORS);
+ ICMP_INC_STATS_BH(net, ICMP_MIB_INERRORS);
return;
}
if (sk->sk_state == TCP_TIME_WAIT) {
@@ -362,7 +365,7 @@ void tcp_v4_err(struct sk_buff *skb, u32 info)
* servers this needs to be solved differently.
*/
if (sock_owned_by_user(sk))
- NET_INC_STATS_BH(LINUX_MIB_LOCKDROPPEDICMPS);
+ NET_INC_STATS_BH(net, LINUX_MIB_LOCKDROPPEDICMPS);
if (sk->sk_state == TCP_CLOSE)
goto out;
@@ -371,7 +374,7 @@ void tcp_v4_err(struct sk_buff *skb, u32 info)
seq = ntohl(th->seq);
if (sk->sk_state != TCP_LISTEN &&
!between(seq, tp->snd_una, tp->snd_nxt)) {
- NET_INC_STATS_BH(LINUX_MIB_OUTOFWINDOWICMPS);
+ NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS);
goto out;
}
@@ -418,7 +421,7 @@ void tcp_v4_err(struct sk_buff *skb, u32 info)
BUG_TRAP(!req->sk);
if (seq != tcp_rsk(req)->snt_isn) {
- NET_INC_STATS_BH(LINUX_MIB_OUTOFWINDOWICMPS);
+ NET_INC_STATS_BH(net, LINUX_MIB_OUTOFWINDOWICMPS);
goto out;
}
@@ -540,6 +543,7 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
#ifdef CONFIG_TCP_MD5SIG
struct tcp_md5sig_key *key;
#endif
+ struct net *net;
/* Never send a reset in response to a reset. */
if (th->rst)
@@ -578,12 +582,9 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
arg.iov[0].iov_len += TCPOLEN_MD5SIG_ALIGNED;
rep.th.doff = arg.iov[0].iov_len / 4;
- tcp_v4_do_calc_md5_hash((__u8 *)&rep.opt[1],
- key,
- ip_hdr(skb)->daddr,
- ip_hdr(skb)->saddr,
- &rep.th, IPPROTO_TCP,
- arg.iov[0].iov_len);
+ tcp_v4_md5_hash_hdr((__u8 *) &rep.opt[1],
+ key, ip_hdr(skb)->daddr,
+ ip_hdr(skb)->saddr, &rep.th);
}
#endif
arg.csum = csum_tcpudp_nofold(ip_hdr(skb)->daddr,
@@ -591,20 +592,21 @@ static void tcp_v4_send_reset(struct sock *sk, struct sk_buff *skb)
sizeof(struct tcphdr), IPPROTO_TCP, 0);
arg.csumoffset = offsetof(struct tcphdr, check) / 2;
- ip_send_reply(dev_net(skb->dst->dev)->ipv4.tcp_sock, skb,
+ net = dev_net(skb->dst->dev);
+ ip_send_reply(net->ipv4.tcp_sock, skb,
&arg, arg.iov[0].iov_len);
- TCP_INC_STATS_BH(TCP_MIB_OUTSEGS);
- TCP_INC_STATS_BH(TCP_MIB_OUTRSTS);
+ TCP_INC_STATS_BH(net, TCP_MIB_OUTSEGS);
+ TCP_INC_STATS_BH(net, TCP_MIB_OUTRSTS);
}
/* The code following below sending ACKs in SYN-RECV and TIME-WAIT states
outside socket context is ugly, certainly. What can I do?
*/
-static void tcp_v4_send_ack(struct tcp_timewait_sock *twsk,
- struct sk_buff *skb, u32 seq, u32 ack,
- u32 win, u32 ts)
+static void tcp_v4_send_ack(struct sk_buff *skb, u32 seq, u32 ack,
+ u32 win, u32 ts, int oif,
+ struct tcp_md5sig_key *key)
{
struct tcphdr *th = tcp_hdr(skb);
struct {
@@ -616,10 +618,7 @@ static void tcp_v4_send_ack(struct tcp_timewait_sock *twsk,
];
} rep;
struct ip_reply_arg arg;
-#ifdef CONFIG_TCP_MD5SIG
- struct tcp_md5sig_key *key;
- struct tcp_md5sig_key tw_key;
-#endif
+ struct net *net = dev_net(skb->dev);
memset(&rep.th, 0, sizeof(struct tcphdr));
memset(&arg, 0, sizeof(arg));
@@ -645,23 +644,6 @@ static void tcp_v4_send_ack(struct tcp_timewait_sock *twsk,
rep.th.window = htons(win);
#ifdef CONFIG_TCP_MD5SIG
- /*
- * The SKB holds an imcoming packet, but may not have a valid ->sk
- * pointer. This is especially the case when we're dealing with a
- * TIME_WAIT ack, because the sk structure is long gone, and only
- * the tcp_timewait_sock remains. So the md5 key is stashed in that
- * structure, and we use it in preference. I believe that (twsk ||
- * skb->sk) holds true, but we program defensively.
- */
- if (!twsk && skb->sk) {
- key = tcp_v4_md5_do_lookup(skb->sk, ip_hdr(skb)->daddr);
- } else if (twsk && twsk->tw_md5_keylen) {
- tw_key.key = twsk->tw_md5_key;
- tw_key.keylen = twsk->tw_md5_keylen;
- key = &tw_key;
- } else
- key = NULL;
-
if (key) {
int offset = (ts) ? 3 : 0;
@@ -672,25 +654,22 @@ static void tcp_v4_send_ack(struct tcp_timewait_sock *twsk,
arg.iov[0].iov_len += TCPOLEN_MD5SIG_ALIGNED;
rep.th.doff = arg.iov[0].iov_len/4;
- tcp_v4_do_calc_md5_hash((__u8 *)&rep.opt[offset],
- key,
- ip_hdr(skb)->daddr,
- ip_hdr(skb)->saddr,
- &rep.th, IPPROTO_TCP,
- arg.iov[0].iov_len);
+ tcp_v4_md5_hash_hdr((__u8 *) &rep.opt[offset],
+ key, ip_hdr(skb)->daddr,
+ ip_hdr(skb)->saddr, &rep.th);
}
#endif
arg.csum = csum_tcpudp_nofold(ip_hdr(skb)->daddr,
ip_hdr(skb)->saddr, /* XXX */
arg.iov[0].iov_len, IPPROTO_TCP, 0);
arg.csumoffset = offsetof(struct tcphdr, check) / 2;
- if (twsk)
- arg.bound_dev_if = twsk->tw_sk.tw_bound_dev_if;
+ if (oif)
+ arg.bound_dev_if = oif;
- ip_send_reply(dev_net(skb->dev)->ipv4.tcp_sock, skb,
+ ip_send_reply(net->ipv4.tcp_sock, skb,
&arg, arg.iov[0].iov_len);
- TCP_INC_STATS_BH(TCP_MIB_OUTSEGS);
+ TCP_INC_STATS_BH(net, TCP_MIB_OUTSEGS);
}
static void tcp_v4_timewait_ack(struct sock *sk, struct sk_buff *skb)
@@ -698,9 +677,12 @@ static void tcp_v4_timewait_ack(struct sock *sk, struct sk_buff *skb)
struct inet_timewait_sock *tw = inet_twsk(sk);
struct tcp_timewait_sock *tcptw = tcp_twsk(sk);
- tcp_v4_send_ack(tcptw, skb, tcptw->tw_snd_nxt, tcptw->tw_rcv_nxt,
+ tcp_v4_send_ack(skb, tcptw->tw_snd_nxt, tcptw->tw_rcv_nxt,
tcptw->tw_rcv_wnd >> tw->tw_rcv_wscale,
- tcptw->tw_ts_recent);
+ tcptw->tw_ts_recent,
+ tw->tw_bound_dev_if,
+ tcp_twsk_md5_key(tcptw)
+ );
inet_twsk_put(tw);
}
@@ -708,9 +690,11 @@ static void tcp_v4_timewait_ack(struct sock *sk, struct sk_buff *skb)
static void tcp_v4_reqsk_send_ack(struct sk_buff *skb,
struct request_sock *req)
{
- tcp_v4_send_ack(NULL, skb, tcp_rsk(req)->snt_isn + 1,
+ tcp_v4_send_ack(skb, tcp_rsk(req)->snt_isn + 1,
tcp_rsk(req)->rcv_isn + 1, req->rcv_wnd,
- req->ts_recent);
+ req->ts_recent,
+ 0,
+ tcp_v4_md5_do_lookup(skb->sk, ip_hdr(skb)->daddr));
}
/*
@@ -1000,32 +984,13 @@ static int tcp_v4_parse_md5_keys(struct sock *sk, char __user *optval,
newkey, cmd.tcpm_keylen);
}
-static int tcp_v4_do_calc_md5_hash(char *md5_hash, struct tcp_md5sig_key *key,
- __be32 saddr, __be32 daddr,
- struct tcphdr *th, int protocol,
- unsigned int tcplen)
+static int tcp_v4_md5_hash_pseudoheader(struct tcp_md5sig_pool *hp,
+ __be32 daddr, __be32 saddr, int nbytes)
{
- struct scatterlist sg[4];
- __u16 data_len;
- int block = 0;
- __sum16 old_checksum;
- struct tcp_md5sig_pool *hp;
struct tcp4_pseudohdr *bp;
- struct hash_desc *desc;
- int err;
- unsigned int nbytes = 0;
-
- /*
- * Okay, so RFC2385 is turned on for this connection,
- * so we need to generate the MD5 hash for the packet now.
- */
-
- hp = tcp_get_md5sig_pool();
- if (!hp)
- goto clear_hash_noput;
+ struct scatterlist sg;
bp = &hp->md5_blk.ip4;
- desc = &hp->md5_desc;
/*
* 1. the TCP pseudo-header (in the order: source IP address,
@@ -1035,86 +1000,96 @@ static int tcp_v4_do_calc_md5_hash(char *md5_hash, struct tcp_md5sig_key *key,
bp->saddr = saddr;
bp->daddr = daddr;
bp->pad = 0;
- bp->protocol = protocol;
- bp->len = htons(tcplen);
-
- sg_init_table(sg, 4);
-
- sg_set_buf(&sg[block++], bp, sizeof(*bp));
- nbytes += sizeof(*bp);
-
- /* 2. the TCP header, excluding options, and assuming a
- * checksum of zero/
- */
- old_checksum = th->check;
- th->check = 0;
- sg_set_buf(&sg[block++], th, sizeof(struct tcphdr));
- nbytes += sizeof(struct tcphdr);
+ bp->protocol = IPPROTO_TCP;
+ bp->len = cpu_to_be16(nbytes);
- /* 3. the TCP segment data (if any) */
- data_len = tcplen - (th->doff << 2);
- if (data_len > 0) {
- unsigned char *data = (unsigned char *)th + (th->doff << 2);
- sg_set_buf(&sg[block++], data, data_len);
- nbytes += data_len;
- }
+ sg_init_one(&sg, bp, sizeof(*bp));
+ return crypto_hash_update(&hp->md5_desc, &sg, sizeof(*bp));
+}
- /* 4. an independently-specified key or password, known to both
- * TCPs and presumably connection-specific
- */
- sg_set_buf(&sg[block++], key->key, key->keylen);
- nbytes += key->keylen;
+static int tcp_v4_md5_hash_hdr(char *md5_hash, struct tcp_md5sig_key *key,
+ __be32 daddr, __be32 saddr, struct tcphdr *th)
+{
+ struct tcp_md5sig_pool *hp;
+ struct hash_desc *desc;
- sg_mark_end(&sg[block - 1]);
+ hp = tcp_get_md5sig_pool();
+ if (!hp)
+ goto clear_hash_noput;
+ desc = &hp->md5_desc;
- /* Now store the Hash into the packet */
- err = crypto_hash_init(desc);
- if (err)
+ if (crypto_hash_init(desc))
goto clear_hash;
- err = crypto_hash_update(desc, sg, nbytes);
- if (err)
+ if (tcp_v4_md5_hash_pseudoheader(hp, daddr, saddr, th->doff << 2))
goto clear_hash;
- err = crypto_hash_final(desc, md5_hash);
- if (err)
+ if (tcp_md5_hash_header(hp, th))
+ goto clear_hash;
+ if (tcp_md5_hash_key(hp, key))
+ goto clear_hash;
+ if (crypto_hash_final(desc, md5_hash))
goto clear_hash;
- /* Reset header, and free up the crypto */
tcp_put_md5sig_pool();
- th->check = old_checksum;
-
-out:
return 0;
+
clear_hash:
tcp_put_md5sig_pool();
clear_hash_noput:
memset(md5_hash, 0, 16);
- goto out;
+ return 1;
}
-int tcp_v4_calc_md5_hash(char *md5_hash, struct tcp_md5sig_key *key,
- struct sock *sk,
- struct dst_entry *dst,
- struct request_sock *req,
- struct tcphdr *th, int protocol,
- unsigned int tcplen)
+int tcp_v4_md5_hash_skb(char *md5_hash, struct tcp_md5sig_key *key,
+ struct sock *sk, struct request_sock *req,
+ struct sk_buff *skb)
{
+ struct tcp_md5sig_pool *hp;
+ struct hash_desc *desc;
+ struct tcphdr *th = tcp_hdr(skb);
__be32 saddr, daddr;
if (sk) {
saddr = inet_sk(sk)->saddr;
daddr = inet_sk(sk)->daddr;
+ } else if (req) {
+ saddr = inet_rsk(req)->loc_addr;
+ daddr = inet_rsk(req)->rmt_addr;
} else {
- struct rtable *rt = (struct rtable *)dst;
- BUG_ON(!rt);
- saddr = rt->rt_src;
- daddr = rt->rt_dst;
+ const struct iphdr *iph = ip_hdr(skb);
+ saddr = iph->saddr;
+ daddr = iph->daddr;
}
- return tcp_v4_do_calc_md5_hash(md5_hash, key,
- saddr, daddr,
- th, protocol, tcplen);
+
+ hp = tcp_get_md5sig_pool();
+ if (!hp)
+ goto clear_hash_noput;
+ desc = &hp->md5_desc;
+
+ if (crypto_hash_init(desc))
+ goto clear_hash;
+
+ if (tcp_v4_md5_hash_pseudoheader(hp, daddr, saddr, skb->len))
+ goto clear_hash;
+ if (tcp_md5_hash_header(hp, th))
+ goto clear_hash;
+ if (tcp_md5_hash_skb_data(hp, skb, th->doff << 2))
+ goto clear_hash;
+ if (tcp_md5_hash_key(hp, key))
+ goto clear_hash;
+ if (crypto_hash_final(desc, md5_hash))
+ goto clear_hash;
+
+ tcp_put_md5sig_pool();
+ return 0;
+
+clear_hash:
+ tcp_put_md5sig_pool();
+clear_hash_noput:
+ memset(md5_hash, 0, 16);
+ return 1;
}
-EXPORT_SYMBOL(tcp_v4_calc_md5_hash);
+EXPORT_SYMBOL(tcp_v4_md5_hash_skb);
static int tcp_v4_inbound_md5_hash(struct sock *sk, struct sk_buff *skb)
{
@@ -1130,52 +1105,12 @@ static int tcp_v4_inbound_md5_hash(struct sock *sk, struct sk_buff *skb)
struct tcp_md5sig_key *hash_expected;
const struct iphdr *iph = ip_hdr(skb);
struct tcphdr *th = tcp_hdr(skb);
- int length = (th->doff << 2) - sizeof(struct tcphdr);
int genhash;
- unsigned char *ptr;
unsigned char newhash[16];
hash_expected = tcp_v4_md5_do_lookup(sk, iph->saddr);
+ hash_location = tcp_parse_md5sig_option(th);
- /*
- * If the TCP option length is less than the TCP_MD5SIG
- * option length, then we can shortcut
- */
- if (length < TCPOLEN_MD5SIG) {
- if (hash_expected)
- return 1;
- else
- return 0;
- }
-
- /* Okay, we can't shortcut - we have to grub through the options */
- ptr = (unsigned char *)(th + 1);
- while (length > 0) {
- int opcode = *ptr++;
- int opsize;
-
- switch (opcode) {
- case TCPOPT_EOL:
- goto done_opts;
- case TCPOPT_NOP:
- length--;
- continue;
- default:
- opsize = *ptr++;
- if (opsize < 2)
- goto done_opts;
- if (opsize > length)
- goto done_opts;
-
- if (opcode == TCPOPT_MD5SIG) {
- hash_location = ptr;
- goto done_opts;
- }
- }
- ptr += opsize-2;
- length -= opsize;
- }
-done_opts:
/* We've parsed the options - do we have a hash? */
if (!hash_expected && !hash_location)
return 0;
@@ -1199,11 +1134,9 @@ done_opts:
/* Okay, so this is hash_expected and hash_location -
* so we need to calculate the checksum.
*/
- genhash = tcp_v4_do_calc_md5_hash(newhash,
- hash_expected,
- iph->saddr, iph->daddr,
- th, sk->sk_protocol,
- skb->len);
+ genhash = tcp_v4_md5_hash_skb(newhash,
+ hash_expected,
+ NULL, NULL, skb);
if (genhash || memcmp(hash_location, newhash, 16) != 0) {
if (net_ratelimit()) {
@@ -1347,7 +1280,7 @@ int tcp_v4_conn_request(struct sock *sk, struct sk_buff *skb)
if (get_seconds() < peer->tcp_ts_stamp + TCP_PAWS_MSL &&
(s32)(peer->tcp_ts - req->ts_recent) >
TCP_PAWS_WINDOW) {
- NET_INC_STATS_BH(LINUX_MIB_PAWSPASSIVEREJECTED);
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_PAWSPASSIVEREJECTED);
goto drop_and_release;
}
}
@@ -1452,6 +1385,7 @@ struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
if (newkey != NULL)
tcp_v4_md5_do_add(newsk, inet_sk(sk)->daddr,
newkey, key->keylen);
+ newsk->sk_route_caps &= ~NETIF_F_GSO_MASK;
}
#endif
@@ -1461,9 +1395,9 @@ struct sock *tcp_v4_syn_recv_sock(struct sock *sk, struct sk_buff *skb,
return newsk;
exit_overflow:
- NET_INC_STATS_BH(LINUX_MIB_LISTENOVERFLOWS);
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENOVERFLOWS);
exit:
- NET_INC_STATS_BH(LINUX_MIB_LISTENDROPS);
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_LISTENDROPS);
dst_release(dst);
return NULL;
}
@@ -1590,7 +1524,7 @@ discard:
return 0;
csum_err:
- TCP_INC_STATS_BH(TCP_MIB_INERRS);
+ TCP_INC_STATS_BH(sock_net(sk), TCP_MIB_INERRS);
goto discard;
}
@@ -1604,12 +1538,13 @@ int tcp_v4_rcv(struct sk_buff *skb)
struct tcphdr *th;
struct sock *sk;
int ret;
+ struct net *net = dev_net(skb->dev);
if (skb->pkt_type != PACKET_HOST)
goto discard_it;
/* Count it even if it's bad */
- TCP_INC_STATS_BH(TCP_MIB_INSEGS);
+ TCP_INC_STATS_BH(net, TCP_MIB_INSEGS);
if (!pskb_may_pull(skb, sizeof(struct tcphdr)))
goto discard_it;
@@ -1638,7 +1573,7 @@ int tcp_v4_rcv(struct sk_buff *skb)
TCP_SKB_CB(skb)->flags = iph->tos;
TCP_SKB_CB(skb)->sacked = 0;
- sk = __inet_lookup(dev_net(skb->dev), &tcp_hashinfo, iph->saddr,
+ sk = __inet_lookup(net, &tcp_hashinfo, iph->saddr,
th->source, iph->daddr, th->dest, inet_iif(skb));
if (!sk)
goto no_tcp_socket;
@@ -1685,7 +1620,7 @@ no_tcp_socket:
if (skb->len < (th->doff << 2) || tcp_checksum_complete(skb)) {
bad_packet:
- TCP_INC_STATS_BH(TCP_MIB_INERRS);
+ TCP_INC_STATS_BH(net, TCP_MIB_INERRS);
} else {
tcp_v4_send_reset(NULL, skb);
}
@@ -1706,7 +1641,7 @@ do_time_wait:
}
if (skb->len < (th->doff << 2) || tcp_checksum_complete(skb)) {
- TCP_INC_STATS_BH(TCP_MIB_INERRS);
+ TCP_INC_STATS_BH(net, TCP_MIB_INERRS);
inet_twsk_put(inet_twsk(sk));
goto discard_it;
}
@@ -1814,7 +1749,7 @@ struct inet_connection_sock_af_ops ipv4_specific = {
#ifdef CONFIG_TCP_MD5SIG
static struct tcp_sock_af_ops tcp_sock_ipv4_specific = {
.md5_lookup = tcp_v4_md5_lookup,
- .calc_md5_hash = tcp_v4_calc_md5_hash,
+ .calc_md5_hash = tcp_v4_md5_hash_skb,
.md5_add = tcp_v4_md5_add_func,
.md5_parse = tcp_v4_parse_md5_keys,
};
@@ -1871,7 +1806,7 @@ static int tcp_v4_init_sock(struct sock *sk)
return 0;
}
-int tcp_v4_destroy_sock(struct sock *sk)
+void tcp_v4_destroy_sock(struct sock *sk)
{
struct tcp_sock *tp = tcp_sk(sk);
@@ -1915,8 +1850,6 @@ int tcp_v4_destroy_sock(struct sock *sk)
}
atomic_dec(&tcp_sockets_allocated);
-
- return 0;
}
EXPORT_SYMBOL(tcp_v4_destroy_sock);
@@ -1959,8 +1892,7 @@ static void *listening_get_next(struct seq_file *seq, void *cur)
req = req->dl_next;
while (1) {
while (req) {
- if (req->rsk_ops->family == st->family &&
- net_eq(sock_net(req->sk), net)) {
+ if (req->rsk_ops->family == st->family) {
cur = req;
goto out;
}