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-rw-r--r--net/mptcp/pm_netlink.c21
-rw-r--r--net/mptcp/protocol.c9
-rw-r--r--net/mptcp/protocol.h5
-rw-r--r--net/mptcp/sockopt.c2
-rw-r--r--net/mptcp/subflow.c2
5 files changed, 26 insertions, 13 deletions
diff --git a/net/mptcp/pm_netlink.c b/net/mptcp/pm_netlink.c
index 7f53e022e27e..ea9e5817b9e9 100644
--- a/net/mptcp/pm_netlink.c
+++ b/net/mptcp/pm_netlink.c
@@ -677,6 +677,7 @@ static void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk)
unsigned int add_addr_accept_max;
struct mptcp_addr_info remote;
unsigned int subflows_max;
+ bool sf_created = false;
int i, nr;
add_addr_accept_max = mptcp_pm_get_add_addr_accept_max(msk);
@@ -704,15 +705,18 @@ static void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk)
if (nr == 0)
return;
- msk->pm.add_addr_accepted++;
- if (msk->pm.add_addr_accepted >= add_addr_accept_max ||
- msk->pm.subflows >= subflows_max)
- WRITE_ONCE(msk->pm.accept_addr, false);
-
spin_unlock_bh(&msk->pm.lock);
for (i = 0; i < nr; i++)
- __mptcp_subflow_connect(sk, &addrs[i], &remote);
+ if (__mptcp_subflow_connect(sk, &addrs[i], &remote) == 0)
+ sf_created = true;
spin_lock_bh(&msk->pm.lock);
+
+ if (sf_created) {
+ msk->pm.add_addr_accepted++;
+ if (msk->pm.add_addr_accepted >= add_addr_accept_max ||
+ msk->pm.subflows >= subflows_max)
+ WRITE_ONCE(msk->pm.accept_addr, false);
+ }
}
void mptcp_pm_nl_addr_send_ack(struct mptcp_sock *msk)
@@ -814,10 +818,13 @@ static void mptcp_pm_nl_rm_addr_or_subflow(struct mptcp_sock *msk,
spin_lock_bh(&msk->pm.lock);
removed = true;
- __MPTCP_INC_STATS(sock_net(sk), rm_type);
+ if (rm_type == MPTCP_MIB_RMSUBFLOW)
+ __MPTCP_INC_STATS(sock_net(sk), rm_type);
}
if (rm_type == MPTCP_MIB_RMSUBFLOW)
__set_bit(rm_id ? rm_id : msk->mpc_endpoint_id, msk->pm.id_avail_bitmap);
+ else if (rm_type == MPTCP_MIB_RMADDR)
+ __MPTCP_INC_STATS(sock_net(sk), rm_type);
if (!removed)
continue;
diff --git a/net/mptcp/protocol.c b/net/mptcp/protocol.c
index 96b113854bd3..a26c2c840fd9 100644
--- a/net/mptcp/protocol.c
+++ b/net/mptcp/protocol.c
@@ -2040,13 +2040,13 @@ static void mptcp_rcv_space_adjust(struct mptcp_sock *msk, int copied)
do_div(grow, msk->rcvq_space.space);
rcvwin += (grow << 1);
- rcvbuf = min_t(u64, __tcp_space_from_win(scaling_ratio, rcvwin),
+ rcvbuf = min_t(u64, mptcp_space_from_win(sk, rcvwin),
READ_ONCE(sock_net(sk)->ipv4.sysctl_tcp_rmem[2]));
if (rcvbuf > sk->sk_rcvbuf) {
u32 window_clamp;
- window_clamp = __tcp_win_from_space(scaling_ratio, rcvbuf);
+ window_clamp = mptcp_win_from_space(sk, rcvbuf);
WRITE_ONCE(sk->sk_rcvbuf, rcvbuf);
/* Make subflows follow along. If we do not do this, we
@@ -2202,7 +2202,7 @@ static int mptcp_recvmsg(struct sock *sk, struct msghdr *msg, size_t len,
if (skb_queue_empty(&msk->receive_queue) && __mptcp_move_skbs(msk))
continue;
- /* only the master socket status is relevant here. The exit
+ /* only the MPTCP socket status is relevant here. The exit
* conditions mirror closely tcp_recvmsg()
*/
if (copied >= target)
@@ -3526,7 +3526,7 @@ void mptcp_subflow_process_delegated(struct sock *ssk, long status)
static int mptcp_hash(struct sock *sk)
{
/* should never be called,
- * we hash the TCP subflows not the master socket
+ * we hash the TCP subflows not the MPTCP socket
*/
WARN_ON_ONCE(1);
return 0;
@@ -3740,6 +3740,7 @@ static int mptcp_connect(struct sock *sk, struct sockaddr *uaddr, int addr_len)
WRITE_ONCE(msk->write_seq, subflow->idsn);
WRITE_ONCE(msk->snd_nxt, subflow->idsn);
+ WRITE_ONCE(msk->snd_una, subflow->idsn);
if (likely(!__mptcp_check_fallback(msk)))
MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_MPCAPABLEACTIVE);
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index 7aa47e2dd52b..b11a4e50d52b 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -386,6 +386,11 @@ static inline int mptcp_win_from_space(const struct sock *sk, int space)
return __tcp_win_from_space(mptcp_sk(sk)->scaling_ratio, space);
}
+static inline int mptcp_space_from_win(const struct sock *sk, int win)
+{
+ return __tcp_space_from_win(mptcp_sk(sk)->scaling_ratio, win);
+}
+
static inline int __mptcp_space(const struct sock *sk)
{
return mptcp_win_from_space(sk, READ_ONCE(sk->sk_rcvbuf) - __mptcp_rmem(sk));
diff --git a/net/mptcp/sockopt.c b/net/mptcp/sockopt.c
index f9a4fb17b5b7..2026a9a36f80 100644
--- a/net/mptcp/sockopt.c
+++ b/net/mptcp/sockopt.c
@@ -1579,7 +1579,7 @@ int mptcp_set_rcvlowat(struct sock *sk, int val)
if (sk->sk_userlocks & SOCK_RCVBUF_LOCK)
return 0;
- space = __tcp_space_from_win(mptcp_sk(sk)->scaling_ratio, val);
+ space = mptcp_space_from_win(sk, val);
if (space <= sk->sk_rcvbuf)
return 0;
diff --git a/net/mptcp/subflow.c b/net/mptcp/subflow.c
index 612c38570a64..39e2cbdf3801 100644
--- a/net/mptcp/subflow.c
+++ b/net/mptcp/subflow.c
@@ -1719,7 +1719,7 @@ int mptcp_subflow_create_socket(struct sock *sk, unsigned short family,
mptcp_sockopt_sync_locked(mptcp_sk(sk), sf->sk);
release_sock(sf->sk);
- /* the newly created socket really belongs to the owning MPTCP master
+ /* the newly created socket really belongs to the owning MPTCP
* socket, even if for additional subflows the allocation is performed
* by a kernel workqueue. Adjust inode references, so that the
* procfs/diag interfaces really show this one belonging to the correct