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-rw-r--r--net/ipv4/fib_frontend.c10
-rw-r--r--net/ipv4/inet_hashtables.c3
-rw-r--r--net/ipv4/proc.c1
-rw-r--r--net/ipv4/route.c7
-rw-r--r--net/ipv4/sysctl_net_ipv4.c6
-rw-r--r--net/ipv4/tcp.c2
-rw-r--r--net/ipv4/tcp_ipv4.c8
-rw-r--r--net/ipv4/tcp_minisocks.c2
-rw-r--r--net/ipv4/tcp_output.c42
-rw-r--r--net/ipv4/udp.c1
-rw-r--r--net/ipv4/udplite.c1
11 files changed, 51 insertions, 32 deletions
diff --git a/net/ipv4/fib_frontend.c b/net/ipv4/fib_frontend.c
index eb6f69a8f27..c19c1f739fb 100644
--- a/net/ipv4/fib_frontend.c
+++ b/net/ipv4/fib_frontend.c
@@ -163,13 +163,19 @@ struct net_device *__ip_dev_find(struct net *net, __be32 addr, bool devref)
.daddr = addr
}
},
- .flags = FLOWI_FLAG_MATCH_ANY_IIF
};
struct fib_result res = { 0 };
struct net_device *dev = NULL;
+ struct fib_table *local_table;
+
+#ifdef CONFIG_IP_MULTIPLE_TABLES
+ res.r = NULL;
+#endif
rcu_read_lock();
- if (fib_lookup(net, &fl, &res)) {
+ local_table = fib_get_table(net, RT_TABLE_LOCAL);
+ if (!local_table ||
+ fib_table_lookup(local_table, &fl, &res, FIB_LOOKUP_NOREF)) {
rcu_read_unlock();
return NULL;
}
diff --git a/net/ipv4/inet_hashtables.c b/net/ipv4/inet_hashtables.c
index 1b344f30b46..3c0369a3a66 100644
--- a/net/ipv4/inet_hashtables.c
+++ b/net/ipv4/inet_hashtables.c
@@ -133,8 +133,7 @@ int __inet_inherit_port(struct sock *sk, struct sock *child)
}
}
}
- sk_add_bind_node(child, &tb->owners);
- inet_csk(child)->icsk_bind_hash = tb;
+ inet_bind_hash(child, tb, port);
spin_unlock(&head->lock);
return 0;
diff --git a/net/ipv4/proc.c b/net/ipv4/proc.c
index 1b48eb1ed45..b14ec7d03b6 100644
--- a/net/ipv4/proc.c
+++ b/net/ipv4/proc.c
@@ -253,6 +253,7 @@ static const struct snmp_mib snmp4_net_list[] = {
SNMP_MIB_ITEM("TCPMinTTLDrop", LINUX_MIB_TCPMINTTLDROP),
SNMP_MIB_ITEM("TCPDeferAcceptDrop", LINUX_MIB_TCPDEFERACCEPTDROP),
SNMP_MIB_ITEM("IPReversePathFilter", LINUX_MIB_IPRPFILTER),
+ SNMP_MIB_ITEM("TCPTimeWaitOverflow", LINUX_MIB_TCPTIMEWAITOVERFLOW),
SNMP_MIB_SENTINEL
};
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 987bf9adb31..df948b0f1ac 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -2585,9 +2585,10 @@ static int ip_route_output_slow(struct net *net, struct rtable **rp,
goto out;
/* RACE: Check return value of inet_select_addr instead. */
- if (rcu_dereference(dev_out->ip_ptr) == NULL)
- goto out; /* Wrong error code */
-
+ if (!(dev_out->flags & IFF_UP) || !__in_dev_get_rcu(dev_out)) {
+ err = -ENETUNREACH;
+ goto out;
+ }
if (ipv4_is_local_multicast(oldflp->fl4_dst) ||
ipv4_is_lbcast(oldflp->fl4_dst)) {
if (!fl.fl4_src)
diff --git a/net/ipv4/sysctl_net_ipv4.c b/net/ipv4/sysctl_net_ipv4.c
index e91911d7aae..1b4ec21497a 100644
--- a/net/ipv4/sysctl_net_ipv4.c
+++ b/net/ipv4/sysctl_net_ipv4.c
@@ -26,6 +26,8 @@ static int zero;
static int tcp_retr1_max = 255;
static int ip_local_port_range_min[] = { 1, 1 };
static int ip_local_port_range_max[] = { 65535, 65535 };
+static int tcp_adv_win_scale_min = -31;
+static int tcp_adv_win_scale_max = 31;
/* Update system visible IP port range */
static void set_local_port_range(int range[2])
@@ -426,7 +428,9 @@ static struct ctl_table ipv4_table[] = {
.data = &sysctl_tcp_adv_win_scale,
.maxlen = sizeof(int),
.mode = 0644,
- .proc_handler = proc_dointvec
+ .proc_handler = proc_dointvec_minmax,
+ .extra1 = &tcp_adv_win_scale_min,
+ .extra2 = &tcp_adv_win_scale_max,
},
{
.procname = "tcp_tw_reuse",
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 08141996948..f15c36a706e 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -2246,7 +2246,7 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
/* Values greater than interface MTU won't take effect. However
* at the point when this call is done we typically don't yet
* know which interface is going to be used */
- if (val < 64 || val > MAX_TCP_WINDOW) {
+ if (val < TCP_MIN_MSS || val > MAX_TCP_WINDOW) {
err = -EINVAL;
break;
}
diff --git a/net/ipv4/tcp_ipv4.c b/net/ipv4/tcp_ipv4.c
index 69ccbc1dde9..d978bb2f748 100644
--- a/net/ipv4/tcp_ipv4.c
+++ b/net/ipv4/tcp_ipv4.c
@@ -2030,7 +2030,7 @@ static void *listening_get_next(struct seq_file *seq, void *cur)
get_req:
req = icsk->icsk_accept_queue.listen_opt->syn_table[st->sbucket];
}
- sk = sk_next(st->syn_wait_sk);
+ sk = sk_nulls_next(st->syn_wait_sk);
st->state = TCP_SEQ_STATE_LISTENING;
read_unlock_bh(&icsk->icsk_accept_queue.syn_wait_lock);
} else {
@@ -2039,11 +2039,13 @@ get_req:
if (reqsk_queue_len(&icsk->icsk_accept_queue))
goto start_req;
read_unlock_bh(&icsk->icsk_accept_queue.syn_wait_lock);
- sk = sk_next(sk);
+ sk = sk_nulls_next(sk);
}
get_sk:
sk_nulls_for_each_from(sk, node) {
- if (sk->sk_family == st->family && net_eq(sock_net(sk), net)) {
+ if (!net_eq(sock_net(sk), net))
+ continue;
+ if (sk->sk_family == st->family) {
cur = sk;
goto out;
}
diff --git a/net/ipv4/tcp_minisocks.c b/net/ipv4/tcp_minisocks.c
index 43cf901d765..a66735f7596 100644
--- a/net/ipv4/tcp_minisocks.c
+++ b/net/ipv4/tcp_minisocks.c
@@ -347,7 +347,7 @@ void tcp_time_wait(struct sock *sk, int state, int timeo)
* socket up. We've got bigger problems than
* non-graceful socket closings.
*/
- LIMIT_NETDEBUG(KERN_INFO "TCP: time wait bucket table overflow\n");
+ NET_INC_STATS_BH(sock_net(sk), LINUX_MIB_TCPTIMEWAITOVERFLOW);
}
tcp_update_metrics(sk);
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 05b1ecf3676..61c2463e275 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -231,11 +231,10 @@ void tcp_select_initial_window(int __space, __u32 mss,
/* when initializing use the value from init_rcv_wnd
* rather than the default from above
*/
- if (init_rcv_wnd &&
- (*rcv_wnd > init_rcv_wnd * mss))
- *rcv_wnd = init_rcv_wnd * mss;
- else if (*rcv_wnd > init_cwnd * mss)
- *rcv_wnd = init_cwnd * mss;
+ if (init_rcv_wnd)
+ *rcv_wnd = min(*rcv_wnd, init_rcv_wnd * mss);
+ else
+ *rcv_wnd = min(*rcv_wnd, init_cwnd * mss);
}
/* Set the clamp no higher than max representable value */
@@ -386,27 +385,30 @@ struct tcp_out_options {
*/
static u8 tcp_cookie_size_check(u8 desired)
{
- if (desired > 0) {
+ int cookie_size;
+
+ if (desired > 0)
/* previously specified */
return desired;
- }
- if (sysctl_tcp_cookie_size <= 0) {
+
+ cookie_size = ACCESS_ONCE(sysctl_tcp_cookie_size);
+ if (cookie_size <= 0)
/* no default specified */
return 0;
- }
- if (sysctl_tcp_cookie_size <= TCP_COOKIE_MIN) {
+
+ if (cookie_size <= TCP_COOKIE_MIN)
/* value too small, specify minimum */
return TCP_COOKIE_MIN;
- }
- if (sysctl_tcp_cookie_size >= TCP_COOKIE_MAX) {
+
+ if (cookie_size >= TCP_COOKIE_MAX)
/* value too large, specify maximum */
return TCP_COOKIE_MAX;
- }
- if (0x1 & sysctl_tcp_cookie_size) {
+
+ if (cookie_size & 1)
/* 8-bit multiple, illegal, fix it */
- return (u8)(sysctl_tcp_cookie_size + 0x1);
- }
- return (u8)sysctl_tcp_cookie_size;
+ cookie_size++;
+
+ return (u8)cookie_size;
}
/* Write previously computed TCP options to the packet.
@@ -1513,6 +1515,7 @@ static int tcp_tso_should_defer(struct sock *sk, struct sk_buff *skb)
struct tcp_sock *tp = tcp_sk(sk);
const struct inet_connection_sock *icsk = inet_csk(sk);
u32 send_win, cong_win, limit, in_flight;
+ int win_divisor;
if (TCP_SKB_CB(skb)->flags & TCPHDR_FIN)
goto send_now;
@@ -1544,13 +1547,14 @@ static int tcp_tso_should_defer(struct sock *sk, struct sk_buff *skb)
if ((skb != tcp_write_queue_tail(sk)) && (limit >= skb->len))
goto send_now;
- if (sysctl_tcp_tso_win_divisor) {
+ win_divisor = ACCESS_ONCE(sysctl_tcp_tso_win_divisor);
+ if (win_divisor) {
u32 chunk = min(tp->snd_wnd, tp->snd_cwnd * tp->mss_cache);
/* If at least some fraction of a window is available,
* just use it.
*/
- chunk /= sysctl_tcp_tso_win_divisor;
+ chunk /= win_divisor;
if (limit >= chunk)
goto send_now;
} else {
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 5e0a3a582a5..2d3ded4d078 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -1899,6 +1899,7 @@ struct proto udp_prot = {
.compat_setsockopt = compat_udp_setsockopt,
.compat_getsockopt = compat_udp_getsockopt,
#endif
+ .clear_sk = sk_prot_clear_portaddr_nulls,
};
EXPORT_SYMBOL(udp_prot);
diff --git a/net/ipv4/udplite.c b/net/ipv4/udplite.c
index ab76aa928fa..aee9963f7f5 100644
--- a/net/ipv4/udplite.c
+++ b/net/ipv4/udplite.c
@@ -57,6 +57,7 @@ struct proto udplite_prot = {
.compat_setsockopt = compat_udp_setsockopt,
.compat_getsockopt = compat_udp_getsockopt,
#endif
+ .clear_sk = sk_prot_clear_portaddr_nulls,
};
EXPORT_SYMBOL(udplite_prot);
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-12-01 03:02:40 +0000