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tcp: Access &tcp_hashinfo via net. 

We will soon introduce an optional per-netns ehash.

This means we cannot use tcp_hashinfo directly in most places.

Instead, access it via net->ipv4.tcp_death_row.hashinfo.

The access will be valid only while initialising tcp_hashinfo
itself and creating/destroying each netns.

Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Kuniyuki Iwashima 2022-09-07 18:10:20 -07:00 committed by Jakub Kicinski
parent 429e42c1c5
commit 4461568aa4
17 changed files with 108 additions and 78 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
drivers/net/ethernet/chelsio/inline_crypto/chtls/chtls_cm.c
View File

@ -1069,8 +1069,7 @@ static void chtls_pass_accept_rpl(struct sk_buff *skb,
cxgb4_l2t_send(csk->egress_dev, skb, csk->l2t_entry);
}
static void inet_inherit_port(struct inet_hashinfo *hash_info,
struct sock *lsk, struct sock *newsk)
static void inet_inherit_port(struct sock *lsk, struct sock *newsk)
{
local_bh_disable();
__inet_inherit_port(lsk, newsk);
@ -1240,7 +1239,7 @@ static struct sock *chtls_recv_sock(struct sock *lsk,
ipv4.sysctl_tcp_window_scaling),
tp->window_clamp);
neigh_release(n);
inet_inherit_port(&tcp_hashinfo, lsk, newsk);
inet_inherit_port(lsk, newsk);
csk_set_flag(csk, CSK_CONN_INLINE);
bh_unlock_sock(newsk); /* tcp_create_openreq_child ->sk_clone_lock */

5
drivers/net/ethernet/mellanox/mlx5/core/en_accel/ktls_rx.c
View File

@ -461,6 +461,7 @@ static void resync_update_sn(struct mlx5e_rq *rq, struct sk_buff *skb)
{
struct ethhdr *eth = (struct ethhdr *)(skb->data);
struct net_device *netdev = rq->netdev;
struct net *net = dev_net(netdev);
struct sock *sk = NULL;
unsigned int datalen;
struct iphdr *iph;
@ -475,7 +476,7 @@ static void resync_update_sn(struct mlx5e_rq *rq, struct sk_buff *skb)
depth += sizeof(struct iphdr);
th = (void *)iph + sizeof(struct iphdr);
sk = inet_lookup_established(dev_net(netdev), &tcp_hashinfo,
sk = inet_lookup_established(net, net->ipv4.tcp_death_row.hashinfo,
iph->saddr, th->source, iph->daddr,
th->dest, netdev->ifindex);
#if IS_ENABLED(CONFIG_IPV6)
@ -485,7 +486,7 @@ static void resync_update_sn(struct mlx5e_rq *rq, struct sk_buff *skb)
depth += sizeof(struct ipv6hdr);
th = (void *)ipv6h + sizeof(struct ipv6hdr);
sk = __inet6_lookup_established(dev_net(netdev), &tcp_hashinfo,
sk = __inet6_lookup_established(net, net->ipv4.tcp_death_row.hashinfo,
&ipv6h->saddr, th->source,
&ipv6h->daddr, ntohs(th->dest),
netdev->ifindex, 0);

5
drivers/net/ethernet/netronome/nfp/crypto/tls.c
View File

@ -474,6 +474,7 @@ int nfp_net_tls_rx_resync_req(struct net_device *netdev,
{
struct nfp_net *nn = netdev_priv(netdev);
struct nfp_net_tls_offload_ctx *ntls;
struct net *net = dev_net(netdev);
struct ipv6hdr *ipv6h;
struct tcphdr *th;
struct iphdr *iph;
@ -494,13 +495,13 @@ int nfp_net_tls_rx_resync_req(struct net_device *netdev,
switch (ipv6h->version) {
case 4:
sk = inet_lookup_established(dev_net(netdev), &tcp_hashinfo,
sk = inet_lookup_established(net, net->ipv4.tcp_death_row.hashinfo,
iph->saddr, th->source, iph->daddr,
th->dest, netdev->ifindex);
break;
#if IS_ENABLED(CONFIG_IPV6)
case 6:
sk = __inet6_lookup_established(dev_net(netdev), &tcp_hashinfo,
sk = __inet6_lookup_established(net, net->ipv4.tcp_death_row.hashinfo,
&ipv6h->saddr, th->source,
&ipv6h->daddr, ntohs(th->dest),
netdev->ifindex, 0);

5
net/core/filter.c
View File

@ -6373,6 +6373,7 @@ static const struct bpf_func_proto bpf_lwt_seg6_adjust_srh_proto = {
static struct sock *sk_lookup(struct net *net, struct bpf_sock_tuple *tuple,
int dif, int sdif, u8 family, u8 proto)
{
struct inet_hashinfo *hinfo = net->ipv4.tcp_death_row.hashinfo;
bool refcounted = false;
struct sock *sk = NULL;
@ -6381,7 +6382,7 @@ static struct sock *sk_lookup(struct net *net, struct bpf_sock_tuple *tuple,
__be32 dst4 = tuple->ipv4.daddr;
if (proto == IPPROTO_TCP)
sk = __inet_lookup(net, &tcp_hashinfo, NULL, 0,
sk = __inet_lookup(net, hinfo, NULL, 0,
src4, tuple->ipv4.sport,
dst4, tuple->ipv4.dport,
dif, sdif, &refcounted);
@ -6395,7 +6396,7 @@ static struct sock *sk_lookup(struct net *net, struct bpf_sock_tuple *tuple,
struct in6_addr *dst6 = (struct in6_addr *)&tuple->ipv6.daddr;
if (proto == IPPROTO_TCP)
sk = __inet6_lookup(net, &tcp_hashinfo, NULL, 0,
sk = __inet6_lookup(net, hinfo, NULL, 0,
src6, tuple->ipv6.sport,
dst6, ntohs(tuple->ipv6.dport),
dif, sdif, &refcounted);

3
net/ipv4/esp4.c
View File

@ -134,6 +134,7 @@ static void esp_free_tcp_sk(struct rcu_head *head)
static struct sock *esp_find_tcp_sk(struct xfrm_state *x)
{
struct xfrm_encap_tmpl *encap = x->encap;
struct net *net = xs_net(x);
struct esp_tcp_sk *esk;
__be16 sport, dport;
struct sock *nsk;
@ -160,7 +161,7 @@ static struct sock *esp_find_tcp_sk(struct xfrm_state *x)
}
spin_unlock_bh(&x->lock);
sk = inet_lookup_established(xs_net(x), &tcp_hashinfo, x->id.daddr.a4,
sk = inet_lookup_established(net, net->ipv4.tcp_death_row.hashinfo, x->id.daddr.a4,
dport, x->props.saddr.a4, sport, 0);
if (!sk)
return ERR_PTR(-ENOENT);

2
net/ipv4/inet_hashtables.c
View File

@ -386,7 +386,7 @@ static inline struct sock *inet_lookup_run_bpf(struct net *net,
struct sock *sk, *reuse_sk;
bool no_reuseport;
if (hashinfo != &tcp_hashinfo)
if (hashinfo != net->ipv4.tcp_death_row.hashinfo)
return NULL; /* only TCP is supported */
no_reuseport = bpf_sk_lookup_run_v4(net, IPPROTO_TCP, saddr, sport,

4
net/ipv4/netfilter/nf_socket_ipv4.c
View File

@ -71,8 +71,8 @@ nf_socket_get_sock_v4(struct net *net, struct sk_buff *skb, const int doff,
{
switch (protocol) {
case IPPROTO_TCP:
return inet_lookup(net, &tcp_hashinfo, skb, doff,
saddr, sport, daddr, dport,
return inet_lookup(net, net->ipv4.tcp_death_row.hashinfo,
skb, doff, saddr, sport, daddr, dport,
in->ifindex);
case IPPROTO_UDP:
return udp4_lib_lookup(net, saddr, sport, daddr, dport,

16
net/ipv4/netfilter/nf_tproxy_ipv4.c
View File

@ -79,6 +79,7 @@ nf_tproxy_get_sock_v4(struct net *net, struct sk_buff *skb,
const struct net_device *in,
const enum nf_tproxy_lookup_t lookup_type)
{
struct inet_hashinfo *hinfo = net->ipv4.tcp_death_row.hashinfo;
struct sock *sk;
switch (protocol) {
@ -92,12 +93,10 @@ nf_tproxy_get_sock_v4(struct net *net, struct sk_buff *skb,
switch (lookup_type) {
case NF_TPROXY_LOOKUP_LISTENER:
sk = inet_lookup_listener(net, &tcp_hashinfo, skb,
ip_hdrlen(skb) +
__tcp_hdrlen(hp),
saddr, sport,
daddr, dport,
in->ifindex, 0);
sk = inet_lookup_listener(net, hinfo, skb,
ip_hdrlen(skb) + __tcp_hdrlen(hp),
saddr, sport, daddr, dport,
in->ifindex, 0);
if (sk && !refcount_inc_not_zero(&sk->sk_refcnt))
sk = NULL;
@ -108,9 +107,8 @@ nf_tproxy_get_sock_v4(struct net *net, struct sk_buff *skb,
*/
break;
case NF_TPROXY_LOOKUP_ESTABLISHED:
sk = inet_lookup_established(net, &tcp_hashinfo,
saddr, sport, daddr, dport,
in->ifindex);
sk = inet_lookup_established(net, hinfo, saddr, sport,
daddr, dport, in->ifindex);
break;
default:
BUG();

18
net/ipv4/tcp_diag.c
View File

@ -181,13 +181,21 @@ static size_t tcp_diag_get_aux_size(struct sock *sk, bool net_admin)
static void tcp_diag_dump(struct sk_buff *skb, struct netlink_callback *cb,
const struct inet_diag_req_v2 *r)
{
inet_diag_dump_icsk(&tcp_hashinfo, skb, cb, r);
struct inet_hashinfo *hinfo;
hinfo = sock_net(cb->skb->sk)->ipv4.tcp_death_row.hashinfo;
inet_diag_dump_icsk(hinfo, skb, cb, r);
}
static int tcp_diag_dump_one(struct netlink_callback *cb,
const struct inet_diag_req_v2 *req)
{
return inet_diag_dump_one_icsk(&tcp_hashinfo, cb, req);
struct inet_hashinfo *hinfo;
hinfo = sock_net(cb->skb->sk)->ipv4.tcp_death_row.hashinfo;
return inet_diag_dump_one_icsk(hinfo, cb, req);
}
#ifdef CONFIG_INET_DIAG_DESTROY
@ -195,9 +203,13 @@ static int tcp_diag_destroy(struct sk_buff *in_skb,
const struct inet_diag_req_v2 *req)
{
struct net *net = sock_net(in_skb->sk);
struct sock *sk = inet_diag_find_one_icsk(net, &tcp_hashinfo, req);
struct inet_hashinfo *hinfo;
struct sock *sk;
int err;
hinfo = net->ipv4.tcp_death_row.hashinfo;
sk = inet_diag_find_one_icsk(net, hinfo, req);
if (IS_ERR(sk))
return PTR_ERR(sk);

72
net/ipv4/tcp_ipv4.c
View File

@ -248,9 +248,11 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
if (!inet_opt || !inet_opt->opt.srr)
daddr = fl4->daddr;
tcp_death_row = &sock_net(sk)->ipv4.tcp_death_row;
if (!inet->inet_saddr) {
if (inet_csk(sk)->icsk_bind2_hash) {
prev_addr_hashbucket = inet_bhashfn_portaddr(&tcp_hashinfo,
prev_addr_hashbucket = inet_bhashfn_portaddr(tcp_death_row->hashinfo,
sk, net, inet->inet_num);
prev_sk_rcv_saddr = sk->sk_rcv_saddr;
}
@ -292,7 +294,6 @@ int tcp_v4_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
* complete initialization after this.
*/
tcp_set_state(sk, TCP_SYN_SENT);
tcp_death_row = &net->ipv4.tcp_death_row;
err = inet_hash_connect(tcp_death_row, sk);
if (err)
goto failure;
@ -494,9 +495,9 @@ int tcp_v4_err(struct sk_buff *skb, u32 info)
int err;
struct net *net = dev_net(skb->dev);
sk = __inet_lookup_established(net, &tcp_hashinfo, iph->daddr,
th->dest, iph->saddr, ntohs(th->source),
inet_iif(skb), 0);
sk = __inet_lookup_established(net, net->ipv4.tcp_death_row.hashinfo,
iph->daddr, th->dest, iph->saddr,
ntohs(th->source), inet_iif(skb), 0);
if (!sk) {
__ICMP_INC_STATS(net, ICMP_MIB_INERRORS);
return -ENOENT;
@ -759,8 +760,8 @@ static void tcp_v4_send_reset(const struct sock *sk, struct sk_buff *skb)
* Incoming packet is checked with md5 hash with finding key,
* no RST generated if md5 hash doesn't match.
*/
sk1 = __inet_lookup_listener(net, &tcp_hashinfo, NULL, 0,
ip_hdr(skb)->saddr,
sk1 = __inet_lookup_listener(net, net->ipv4.tcp_death_row.hashinfo,
NULL, 0, ip_hdr(skb)->saddr,
th->source, ip_hdr(skb)->daddr,
ntohs(th->source), dif, sdif);
/* don't send rst if it can't find key */
@ -1728,6 +1729,7 @@ EXPORT_SYMBOL(tcp_v4_do_rcv);
int tcp_v4_early_demux(struct sk_buff *skb)
{
struct net *net = dev_net(skb->dev);
const struct iphdr *iph;
const struct tcphdr *th;
struct sock *sk;
@ -1744,7 +1746,7 @@ int tcp_v4_early_demux(struct sk_buff *skb)
if (th->doff < sizeof(struct tcphdr) / 4)
return 0;
sk = __inet_lookup_established(dev_net(skb->dev), &tcp_hashinfo,
sk = __inet_lookup_established(net, net->ipv4.tcp_death_row.hashinfo,
iph->saddr, th->source,
iph->daddr, ntohs(th->dest),
skb->skb_iif, inet_sdif(skb));
@ -1970,7 +1972,8 @@ int tcp_v4_rcv(struct sk_buff *skb)
th = (const struct tcphdr *)skb->data;
iph = ip_hdr(skb);
lookup:
sk = __inet_lookup_skb(&tcp_hashinfo, skb, __tcp_hdrlen(th), th->source,
sk = __inet_lookup_skb(net->ipv4.tcp_death_row.hashinfo,
skb, __tcp_hdrlen(th), th->source,
th->dest, sdif, &refcounted);
if (!sk)
goto no_tcp_socket;
@ -2152,9 +2155,9 @@ do_time_wait:
}
switch (tcp_timewait_state_process(inet_twsk(sk), skb, th)) {
case TCP_TW_SYN: {
struct sock *sk2 = inet_lookup_listener(dev_net(skb->dev),
&tcp_hashinfo, skb,
__tcp_hdrlen(th),
struct sock *sk2 = inet_lookup_listener(net,
net->ipv4.tcp_death_row.hashinfo,
skb, __tcp_hdrlen(th),
iph->saddr, th->source,
iph->daddr, th->dest,
inet_iif(skb),
@ -2304,15 +2307,16 @@ static bool seq_sk_match(struct seq_file *seq, const struct sock *sk)
*/
static void *listening_get_first(struct seq_file *seq)
{
struct inet_hashinfo *hinfo = seq_file_net(seq)->ipv4.tcp_death_row.hashinfo;
struct tcp_iter_state *st = seq->private;
st->offset = 0;
for (; st->bucket <= tcp_hashinfo.lhash2_mask; st->bucket++) {
for (; st->bucket <= hinfo->lhash2_mask; st->bucket++) {
struct inet_listen_hashbucket *ilb2;
struct hlist_nulls_node *node;
struct sock *sk;
ilb2 = &tcp_hashinfo.lhash2[st->bucket];
ilb2 = &hinfo->lhash2[st->bucket];
if (hlist_nulls_empty(&ilb2->nulls_head))
continue;
@ -2337,6 +2341,7 @@ static void *listening_get_next(struct seq_file *seq, void *cur)
struct tcp_iter_state *st = seq->private;
struct inet_listen_hashbucket *ilb2;
struct hlist_nulls_node *node;
struct inet_hashinfo *hinfo;
struct sock *sk = cur;
++st->num;
@ -2348,7 +2353,8 @@ static void *listening_get_next(struct seq_file *seq, void *cur)
return sk;
}
ilb2 = &tcp_hashinfo.lhash2[st->bucket];
hinfo = seq_file_net(seq)->ipv4.tcp_death_row.hashinfo;
ilb2 = &hinfo->lhash2[st->bucket];
spin_unlock(&ilb2->lock);
++st->bucket;
return listening_get_first(seq);
@ -2370,9 +2376,10 @@ static void *listening_get_idx(struct seq_file *seq, loff_t *pos)
return rc;
}
static inline bool empty_bucket(const struct tcp_iter_state *st)
static inline bool empty_bucket(struct inet_hashinfo *hinfo,
const struct tcp_iter_state *st)
{
return hlist_nulls_empty(&tcp_hashinfo.ehash[st->bucket].chain);
return hlist_nulls_empty(&hinfo->ehash[st->bucket].chain);
}
/*
@ -2381,20 +2388,21 @@ static inline bool empty_bucket(const struct tcp_iter_state *st)
*/
static void *established_get_first(struct seq_file *seq)
{
struct inet_hashinfo *hinfo = seq_file_net(seq)->ipv4.tcp_death_row.hashinfo;
struct tcp_iter_state *st = seq->private;
st->offset = 0;
for (; st->bucket <= tcp_hashinfo.ehash_mask; ++st->bucket) {
for (; st->bucket <= hinfo->ehash_mask; ++st->bucket) {
struct sock *sk;
struct hlist_nulls_node *node;
spinlock_t *lock = inet_ehash_lockp(&tcp_hashinfo, st->bucket);
spinlock_t *lock = inet_ehash_lockp(hinfo, st->bucket);
/* Lockless fast path for the common case of empty buckets */
if (empty_bucket(st))
if (empty_bucket(hinfo, st))
continue;
spin_lock_bh(lock);
sk_nulls_for_each(sk, node, &tcp_hashinfo.ehash[st->bucket].chain) {
sk_nulls_for_each(sk, node, &hinfo->ehash[st->bucket].chain) {
if (seq_sk_match(seq, sk))
return sk;
}
@ -2406,6 +2414,7 @@ static void *established_get_first(struct seq_file *seq)
static void *established_get_next(struct seq_file *seq, void *cur)
{
struct inet_hashinfo *hinfo = seq_file_net(seq)->ipv4.tcp_death_row.hashinfo;
struct tcp_iter_state *st = seq->private;
struct hlist_nulls_node *node;
struct sock *sk = cur;
@ -2420,7 +2429,7 @@ static void *established_get_next(struct seq_file *seq, void *cur)
return sk;
}
spin_unlock_bh(inet_ehash_lockp(&tcp_hashinfo, st->bucket));
spin_unlock_bh(inet_ehash_lockp(hinfo, st->bucket));
++st->bucket;
return established_get_first(seq);
}
@ -2458,6 +2467,7 @@ static void *tcp_get_idx(struct seq_file *seq, loff_t pos)
static void *tcp_seek_last_pos(struct seq_file *seq)
{
struct inet_hashinfo *hinfo = seq_file_net(seq)->ipv4.tcp_death_row.hashinfo;
struct tcp_iter_state *st = seq->private;
int bucket = st->bucket;
int offset = st->offset;
@ -2466,7 +2476,7 @@ static void *tcp_seek_last_pos(struct seq_file *seq)
switch (st->state) {
case TCP_SEQ_STATE_LISTENING:
if (st->bucket > tcp_hashinfo.lhash2_mask)
if (st->bucket > hinfo->lhash2_mask)
break;
st->state = TCP_SEQ_STATE_LISTENING;
rc = listening_get_first(seq);
@ -2478,7 +2488,7 @@ static void *tcp_seek_last_pos(struct seq_file *seq)
st->state = TCP_SEQ_STATE_ESTABLISHED;
fallthrough;
case TCP_SEQ_STATE_ESTABLISHED:
if (st->bucket > tcp_hashinfo.ehash_mask)
if (st->bucket > hinfo->ehash_mask)
break;
rc = established_get_first(seq);
while (offset-- && rc && bucket == st->bucket)
@ -2546,16 +2556,17 @@ EXPORT_SYMBOL(tcp_seq_next);
void tcp_seq_stop(struct seq_file *seq, void *v)
{
struct inet_hashinfo *hinfo = seq_file_net(seq)->ipv4.tcp_death_row.hashinfo;
struct tcp_iter_state *st = seq->private;
switch (st->state) {
case TCP_SEQ_STATE_LISTENING:
if (v != SEQ_START_TOKEN)
spin_unlock(&tcp_hashinfo.lhash2[st->bucket].lock);
spin_unlock(&hinfo->lhash2[st->bucket].lock);
break;
case TCP_SEQ_STATE_ESTABLISHED:
if (v)
spin_unlock_bh(inet_ehash_lockp(&tcp_hashinfo, st->bucket));
spin_unlock_bh(inet_ehash_lockp(hinfo, st->bucket));
break;
}
}
@ -2750,6 +2761,7 @@ static int bpf_iter_tcp_realloc_batch(struct bpf_tcp_iter_state *iter,
static unsigned int bpf_iter_tcp_listening_batch(struct seq_file *seq,
struct sock *start_sk)
{
struct inet_hashinfo *hinfo = seq_file_net(seq)->ipv4.tcp_death_row.hashinfo;
struct bpf_tcp_iter_state *iter = seq->private;
struct tcp_iter_state *st = &iter->state;
struct hlist_nulls_node *node;
@ -2769,7 +2781,7 @@ static unsigned int bpf_iter_tcp_listening_batch(struct seq_file *seq,
expected++;
}
}
spin_unlock(&tcp_hashinfo.lhash2[st->bucket].lock);
spin_unlock(&hinfo->lhash2[st->bucket].lock);
return expected;
}
@ -2777,6 +2789,7 @@ static unsigned int bpf_iter_tcp_listening_batch(struct seq_file *seq,
static unsigned int bpf_iter_tcp_established_batch(struct seq_file *seq,
struct sock *start_sk)
{
struct inet_hashinfo *hinfo = seq_file_net(seq)->ipv4.tcp_death_row.hashinfo;
struct bpf_tcp_iter_state *iter = seq->private;
struct tcp_iter_state *st = &iter->state;
struct hlist_nulls_node *node;
@ -2796,13 +2809,14 @@ static unsigned int bpf_iter_tcp_established_batch(struct seq_file *seq,
expected++;
}
}
spin_unlock_bh(inet_ehash_lockp(&tcp_hashinfo, st->bucket));
spin_unlock_bh(inet_ehash_lockp(hinfo, st->bucket));
return expected;
}
static struct sock *bpf_iter_tcp_batch(struct seq_file *seq)
{
struct inet_hashinfo *hinfo = seq_file_net(seq)->ipv4.tcp_death_row.hashinfo;
struct bpf_tcp_iter_state *iter = seq->private;
struct tcp_iter_state *st = &iter->state;
unsigned int expected;
@ -2818,7 +2832,7 @@ static struct sock *bpf_iter_tcp_batch(struct seq_file *seq)
st->offset = 0;
st->bucket++;
if (st->state == TCP_SEQ_STATE_LISTENING &&
st->bucket > tcp_hashinfo.lhash2_mask) {
st->bucket > hinfo->lhash2_mask) {
st->state = TCP_SEQ_STATE_ESTABLISHED;
st->bucket = 0;
}

2
net/ipv4/tcp_minisocks.c
View File

@ -319,7 +319,7 @@ void tcp_time_wait(struct sock *sk, int state, int timeo)
/* Linkage updates.
* Note that access to tw after this point is illegal.
*/
inet_twsk_hashdance(tw, sk, &tcp_hashinfo);
inet_twsk_hashdance(tw, sk, net->ipv4.tcp_death_row.hashinfo);
local_bh_enable();
} else {
/* Sorry, if we're out of memory, just CLOSE this

3
net/ipv6/esp6.c
View File

@ -151,6 +151,7 @@ static void esp_free_tcp_sk(struct rcu_head *head)
static struct sock *esp6_find_tcp_sk(struct xfrm_state *x)
{
struct xfrm_encap_tmpl *encap = x->encap;
struct net *net = xs_net(x);
struct esp_tcp_sk *esk;
__be16 sport, dport;
struct sock *nsk;
@ -177,7 +178,7 @@ static struct sock *esp6_find_tcp_sk(struct xfrm_state *x)
}
spin_unlock_bh(&x->lock);
sk = __inet6_lookup_established(xs_net(x), &tcp_hashinfo, &x->id.daddr.in6,
sk = __inet6_lookup_established(net, net->ipv4.tcp_death_row.hashinfo, &x->id.daddr.in6,
dport, &x->props.saddr.in6, ntohs(sport), 0, 0);
if (!sk)
return ERR_PTR(-ENOENT);

4
net/ipv6/inet6_hashtables.c
View File

@ -21,8 +21,6 @@
#include <net/ip.h>
#include <net/sock_reuseport.h>
extern struct inet_hashinfo tcp_hashinfo;
u32 inet6_ehashfn(const struct net *net,
const struct in6_addr *laddr, const u16 lport,
const struct in6_addr *faddr, const __be16 fport)
@ -169,7 +167,7 @@ static inline struct sock *inet6_lookup_run_bpf(struct net *net,
struct sock *sk, *reuse_sk;
bool no_reuseport;
if (hashinfo != &tcp_hashinfo)
if (hashinfo != net->ipv4.tcp_death_row.hashinfo)
return NULL; /* only TCP is supported */
no_reuseport = bpf_sk_lookup_run_v6(net, IPPROTO_TCP, saddr, sport,

4
net/ipv6/netfilter/nf_socket_ipv6.c
View File

@ -83,8 +83,8 @@ nf_socket_get_sock_v6(struct net *net, struct sk_buff *skb, int doff,
{
switch (protocol) {
case IPPROTO_TCP:
return inet6_lookup(net, &tcp_hashinfo, skb, doff,
saddr, sport, daddr, dport,
return inet6_lookup(net, net->ipv4.tcp_death_row.hashinfo,
skb, doff, saddr, sport, daddr, dport,
in->ifindex);
case IPPROTO_UDP:
return udp6_lib_lookup(net, saddr, sport, daddr, dport,

8
net/ipv6/netfilter/nf_tproxy_ipv6.c
View File

@ -80,6 +80,7 @@ nf_tproxy_get_sock_v6(struct net *net, struct sk_buff *skb, int thoff,
const struct net_device *in,
const enum nf_tproxy_lookup_t lookup_type)
{
struct inet_hashinfo *hinfo = net->ipv4.tcp_death_row.hashinfo;
struct sock *sk;
switch (protocol) {
@ -93,7 +94,7 @@ nf_tproxy_get_sock_v6(struct net *net, struct sk_buff *skb, int thoff,
switch (lookup_type) {
case NF_TPROXY_LOOKUP_LISTENER:
sk = inet6_lookup_listener(net, &tcp_hashinfo, skb,
sk = inet6_lookup_listener(net, hinfo, skb,
thoff + __tcp_hdrlen(hp),
saddr, sport,
daddr, ntohs(dport),
@ -108,9 +109,8 @@ nf_tproxy_get_sock_v6(struct net *net, struct sk_buff *skb, int thoff,
*/
break;
case NF_TPROXY_LOOKUP_ESTABLISHED:
sk = __inet6_lookup_established(net, &tcp_hashinfo,
saddr, sport, daddr, ntohs(dport),
in->ifindex, 0);
sk = __inet6_lookup_established(net, hinfo, saddr, sport, daddr,
ntohs(dport), in->ifindex, 0);
break;
default:
BUG();

23
net/ipv6/tcp_ipv6.c
View File

@ -287,12 +287,14 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
goto failure;
}
tcp_death_row = &sock_net(sk)->ipv4.tcp_death_row;
if (!saddr) {
struct inet_bind_hashbucket *prev_addr_hashbucket = NULL;
struct in6_addr prev_v6_rcv_saddr;
if (icsk->icsk_bind2_hash) {
prev_addr_hashbucket = inet_bhashfn_portaddr(&tcp_hashinfo,
prev_addr_hashbucket = inet_bhashfn_portaddr(tcp_death_row->hashinfo,
sk, net, inet->inet_num);
prev_v6_rcv_saddr = sk->sk_v6_rcv_saddr;
}
@ -325,7 +327,6 @@ static int tcp_v6_connect(struct sock *sk, struct sockaddr *uaddr,
inet->inet_dport = usin->sin6_port;
tcp_set_state(sk, TCP_SYN_SENT);
tcp_death_row = &net->ipv4.tcp_death_row;
err = inet6_hash_connect(tcp_death_row, sk);
if (err)
goto late_failure;
@ -402,7 +403,7 @@ static int tcp_v6_err(struct sk_buff *skb, struct inet6_skb_parm *opt,
bool fatal;
int err;
sk = __inet6_lookup_established(net, &tcp_hashinfo,
sk = __inet6_lookup_established(net, net->ipv4.tcp_death_row.hashinfo,
&hdr->daddr, th->dest,
&hdr->saddr, ntohs(th->source),
skb->dev->ifindex, inet6_sdif(skb));
@ -1035,11 +1036,10 @@ static void tcp_v6_send_reset(const struct sock *sk, struct sk_buff *skb)
* Incoming packet is checked with md5 hash with finding key,
* no RST generated if md5 hash doesn't match.
*/
sk1 = inet6_lookup_listener(net,
&tcp_hashinfo, NULL, 0,
&ipv6h->saddr,
th->source, &ipv6h->daddr,
ntohs(th->source), dif, sdif);
sk1 = inet6_lookup_listener(net, net->ipv4.tcp_death_row.hashinfo,
NULL, 0, &ipv6h->saddr, th->source,
&ipv6h->daddr, ntohs(th->source),
dif, sdif);
if (!sk1)
goto out;
@ -1637,7 +1637,7 @@ INDIRECT_CALLABLE_SCOPE int tcp_v6_rcv(struct sk_buff *skb)
hdr = ipv6_hdr(skb);
lookup:
sk = __inet6_lookup_skb(&tcp_hashinfo, skb, __tcp_hdrlen(th),
sk = __inet6_lookup_skb(net->ipv4.tcp_death_row.hashinfo, skb, __tcp_hdrlen(th),
th->source, th->dest, inet6_iif(skb), sdif,
&refcounted);
if (!sk)
@ -1812,7 +1812,7 @@ do_time_wait:
{
struct sock *sk2;
sk2 = inet6_lookup_listener(dev_net(skb->dev), &tcp_hashinfo,
sk2 = inet6_lookup_listener(net, net->ipv4.tcp_death_row.hashinfo,
skb, __tcp_hdrlen(th),
&ipv6_hdr(skb)->saddr, th->source,
&ipv6_hdr(skb)->daddr,
@ -1845,6 +1845,7 @@ do_time_wait:
void tcp_v6_early_demux(struct sk_buff *skb)
{
struct net *net = dev_net(skb->dev);
const struct ipv6hdr *hdr;
const struct tcphdr *th;
struct sock *sk;
@ -1862,7 +1863,7 @@ void tcp_v6_early_demux(struct sk_buff *skb)
return;
/* Note : We use inet6_iif() here, not tcp_v6_iif() */
sk = __inet6_lookup_established(dev_net(skb->dev), &tcp_hashinfo,
sk = __inet6_lookup_established(net, net->ipv4.tcp_death_row.hashinfo,
&hdr->saddr, th->source,
&hdr->daddr, ntohs(th->dest),
inet6_iif(skb), inet6_sdif(skb));

7
net/mptcp/mptcp_diag.c
View File

@ -81,15 +81,18 @@ static void mptcp_diag_dump_listeners(struct sk_buff *skb, struct netlink_callba
struct mptcp_diag_ctx *diag_ctx = (void *)cb->ctx;
struct nlattr *bc = cb_data->inet_diag_nla_bc;
struct net *net = sock_net(skb->sk);
struct inet_hashinfo *hinfo;
int i;
for (i = diag_ctx->l_slot; i <= tcp_hashinfo.lhash2_mask; i++) {
hinfo = net->ipv4.tcp_death_row.hashinfo;
for (i = diag_ctx->l_slot; i <= hinfo->lhash2_mask; i++) {
struct inet_listen_hashbucket *ilb;
struct hlist_nulls_node *node;
struct sock *sk;
int num = 0;
ilb = &tcp_hashinfo.lhash2[i];
ilb = &hinfo->lhash2[i];
rcu_read_lock();
spin_lock(&ilb->lock);