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-rw-r--r--net/mptcp/options.c12
-rw-r--r--net/mptcp/pm.c18
-rw-r--r--net/mptcp/pm_kernel.c1
-rw-r--r--net/mptcp/pm_netlink.c7
-rw-r--r--net/mptcp/protocol.c17
-rw-r--r--net/mptcp/sockopt.c11
-rw-r--r--net/mptcp/subflow.c4
7 files changed, 51 insertions, 19 deletions
diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index 70c0ab0ecf90..1103b3341a70 100644
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -985,13 +985,13 @@ static bool check_fully_established(struct mptcp_sock *msk, struct sock *ssk,
return false;
}
- if (mp_opt->deny_join_id0)
- WRITE_ONCE(msk->pm.remote_deny_join_id0, true);
-
if (unlikely(!READ_ONCE(msk->pm.server_side)))
pr_warn_once("bogus mpc option on established client sk");
set_fully_established:
+ if (mp_opt->deny_join_id0)
+ WRITE_ONCE(msk->pm.remote_deny_join_id0, true);
+
mptcp_data_lock((struct sock *)msk);
__mptcp_subflow_fully_established(msk, subflow, mp_opt);
mptcp_data_unlock((struct sock *)msk);
@@ -1118,7 +1118,9 @@ static bool add_addr_hmac_valid(struct mptcp_sock *msk,
return hmac == mp_opt->ahmac;
}
-/* Return false if a subflow has been reset, else return true */
+/* Return false in case of error (or subflow has been reset),
+ * else return true.
+ */
bool mptcp_incoming_options(struct sock *sk, struct sk_buff *skb)
{
struct mptcp_subflow_context *subflow = mptcp_subflow_ctx(sk);
@@ -1222,7 +1224,7 @@ bool mptcp_incoming_options(struct sock *sk, struct sk_buff *skb)
mpext = skb_ext_add(skb, SKB_EXT_MPTCP);
if (!mpext)
- return true;
+ return false;
memset(mpext, 0, sizeof(*mpext));
diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index 420d416e2603..136a380602ca 100644
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c
@@ -274,6 +274,7 @@ static void mptcp_pm_add_timer(struct timer_list *timer)
add_timer);
struct mptcp_sock *msk = entry->sock;
struct sock *sk = (struct sock *)msk;
+ unsigned int timeout;
pr_debug("msk=%p\n", msk);
@@ -291,6 +292,10 @@ static void mptcp_pm_add_timer(struct timer_list *timer)
goto out;
}
+ timeout = mptcp_get_add_addr_timeout(sock_net(sk));
+ if (!timeout)
+ goto out;
+
spin_lock_bh(&msk->pm.lock);
if (!mptcp_pm_should_add_signal_addr(msk)) {
@@ -302,7 +307,7 @@ static void mptcp_pm_add_timer(struct timer_list *timer)
if (entry->retrans_times < ADD_ADDR_RETRANS_MAX)
sk_reset_timer(sk, timer,
- jiffies + mptcp_get_add_addr_timeout(sock_net(sk)));
+ jiffies + timeout);
spin_unlock_bh(&msk->pm.lock);
@@ -344,6 +349,7 @@ bool mptcp_pm_alloc_anno_list(struct mptcp_sock *msk,
struct mptcp_pm_add_entry *add_entry = NULL;
struct sock *sk = (struct sock *)msk;
struct net *net = sock_net(sk);
+ unsigned int timeout;
lockdep_assert_held(&msk->pm.lock);
@@ -353,9 +359,7 @@ bool mptcp_pm_alloc_anno_list(struct mptcp_sock *msk,
if (WARN_ON_ONCE(mptcp_pm_is_kernel(msk)))
return false;
- sk_reset_timer(sk, &add_entry->add_timer,
- jiffies + mptcp_get_add_addr_timeout(net));
- return true;
+ goto reset_timer;
}
add_entry = kmalloc(sizeof(*add_entry), GFP_ATOMIC);
@@ -369,8 +373,10 @@ bool mptcp_pm_alloc_anno_list(struct mptcp_sock *msk,
add_entry->retrans_times = 0;
timer_setup(&add_entry->add_timer, mptcp_pm_add_timer, 0);
- sk_reset_timer(sk, &add_entry->add_timer,
- jiffies + mptcp_get_add_addr_timeout(net));
+reset_timer:
+ timeout = mptcp_get_add_addr_timeout(net);
+ if (timeout)
+ sk_reset_timer(sk, &add_entry->add_timer, jiffies + timeout);
return true;
}
diff --git a/net/mptcp/pm_kernel.c b/net/mptcp/pm_kernel.c
index d39e7c178460..667803d72b64 100644
--- a/net/mptcp/pm_kernel.c
+++ b/net/mptcp/pm_kernel.c
@@ -1085,7 +1085,6 @@ static void __flush_addrs(struct list_head *list)
static void __reset_counters(struct pm_nl_pernet *pernet)
{
WRITE_ONCE(pernet->add_addr_signal_max, 0);
- WRITE_ONCE(pernet->add_addr_accept_max, 0);
WRITE_ONCE(pernet->local_addr_max, 0);
pernet->addrs = 0;
}
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index 50aaf259959a..ce7d42d3bd00 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -408,6 +408,7 @@ static int mptcp_event_created(struct sk_buff *skb,
const struct sock *ssk)
{
int err = nla_put_u32(skb, MPTCP_ATTR_TOKEN, READ_ONCE(msk->token));
+ u16 flags = 0;
if (err)
return err;
@@ -415,6 +416,12 @@ static int mptcp_event_created(struct sk_buff *skb,
if (nla_put_u8(skb, MPTCP_ATTR_SERVER_SIDE, READ_ONCE(msk->pm.server_side)))
return -EMSGSIZE;
+ if (READ_ONCE(msk->pm.remote_deny_join_id0))
+ flags |= MPTCP_PM_EV_FLAG_DENY_JOIN_ID0;
+
+ if (flags && nla_put_u16(skb, MPTCP_ATTR_FLAGS, flags))
+ return -EMSGSIZE;
+
return mptcp_event_add_subflow(skb, ssk);
}
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 9a287b75c1b3..5e497a83e967 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -371,6 +371,20 @@ static void mptcp_close_wake_up(struct sock *sk)
sk_wake_async(sk, SOCK_WAKE_WAITD, POLL_IN);
}
+static void mptcp_shutdown_subflows(struct mptcp_sock *msk)
+{
+ struct mptcp_subflow_context *subflow;
+
+ mptcp_for_each_subflow(msk, subflow) {
+ struct sock *ssk = mptcp_subflow_tcp_sock(subflow);
+ bool slow;
+
+ slow = lock_sock_fast(ssk);
+ tcp_shutdown(ssk, SEND_SHUTDOWN);
+ unlock_sock_fast(ssk, slow);
+ }
+}
+
/* called under the msk socket lock */
static bool mptcp_pending_data_fin_ack(struct sock *sk)
{
@@ -395,6 +409,7 @@ static void mptcp_check_data_fin_ack(struct sock *sk)
break;
case TCP_CLOSING:
case TCP_LAST_ACK:
+ mptcp_shutdown_subflows(msk);
mptcp_set_state(sk, TCP_CLOSE);
break;
}
@@ -563,6 +578,7 @@ static bool mptcp_check_data_fin(struct sock *sk)
mptcp_set_state(sk, TCP_CLOSING);
break;
case TCP_FIN_WAIT2:
+ mptcp_shutdown_subflows(msk);
mptcp_set_state(sk, TCP_CLOSE);
break;
default:
@@ -3554,7 +3570,6 @@ void mptcp_sock_graft(struct sock *sk, struct socket *parent)
write_lock_bh(&sk->sk_callback_lock);
rcu_assign_pointer(sk->sk_wq, &parent->wq);
sk_set_socket(sk, parent);
- WRITE_ONCE(sk->sk_uid, SOCK_INODE(parent)->i_uid);
write_unlock_bh(&sk->sk_callback_lock);
}
diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c
index 2c267aff95be..2abe6f1e9940 100644
--- a/net/mptcp/sockopt.c
+++ b/net/mptcp/sockopt.c
@@ -1532,13 +1532,12 @@ static void sync_socket_options(struct mptcp_sock *msk, struct sock *ssk)
{
static const unsigned int tx_rx_locks = SOCK_RCVBUF_LOCK | SOCK_SNDBUF_LOCK;
struct sock *sk = (struct sock *)msk;
+ bool keep_open;
- if (ssk->sk_prot->keepalive) {
- if (sock_flag(sk, SOCK_KEEPOPEN))
- ssk->sk_prot->keepalive(ssk, 1);
- else
- ssk->sk_prot->keepalive(ssk, 0);
- }
+ keep_open = sock_flag(sk, SOCK_KEEPOPEN);
+ if (ssk->sk_prot->keepalive)
+ ssk->sk_prot->keepalive(ssk, keep_open);
+ sock_valbool_flag(ssk, SOCK_KEEPOPEN, keep_open);
ssk->sk_priority = sk->sk_priority;
ssk->sk_bound_dev_if = sk->sk_bound_dev_if;
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index 3f1b62a9fe88..f31a3a79531a 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -883,6 +883,10 @@ create_child:
ctx->subflow_id = 1;
owner = mptcp_sk(ctx->conn);
+
+ if (mp_opt.deny_join_id0)
+ WRITE_ONCE(owner->pm.remote_deny_join_id0, true);
+
mptcp_pm_new_connection(owner, child, 1);
/* with OoO packets we can reach here without ingress
generated by cgit (git 2.34.1) at 2025-09-19 16:29:17 +0000