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-rw-r--r--net/mptcp/options.c6
-rw-r--r--net/mptcp/protocol.h9
2 files changed, 11 insertions, 4 deletions
diff --git a/net/mptcp/options.c b/net/mptcp/options.c
index a62bc874bf1e..123f3f297284 100644
--- a/net/mptcp/options.c
+++ b/net/mptcp/options.c
@@ -607,7 +607,6 @@ static bool mptcp_established_options_dss(struct sock *sk, struct sk_buff *skb,
}
opts->ext_copy.use_ack = 1;
opts->suboptions = OPTION_MPTCP_DSS;
- WRITE_ONCE(msk->old_wspace, __mptcp_space((struct sock *)msk));
/* Add kind/length/subtype/flag overhead if mapping is not populated */
if (dss_size == 0)
@@ -1288,7 +1287,7 @@ static void mptcp_set_rwin(struct tcp_sock *tp, struct tcphdr *th)
}
MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_RCVWNDCONFLICT);
}
- return;
+ goto update_wspace;
}
if (rcv_wnd_new != rcv_wnd_old) {
@@ -1313,6 +1312,9 @@ raise_win:
th->window = htons(new_win);
MPTCP_INC_STATS(sock_net(ssk), MPTCP_MIB_RCVWNDSHARED);
}
+
+update_wspace:
+ WRITE_ONCE(msk->old_wspace, tp->rcv_wnd);
}
__sum16 __mptcp_make_csum(u64 data_seq, u32 subflow_seq, u16 data_len, __wsum sum)
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index cd5132fe7d22..0174a5aad279 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -760,10 +760,15 @@ static inline u64 mptcp_data_avail(const struct mptcp_sock *msk)
static inline bool mptcp_epollin_ready(const struct sock *sk)
{
+ u64 data_avail = mptcp_data_avail(mptcp_sk(sk));
+
+ if (!data_avail)
+ return false;
+
/* mptcp doesn't have to deal with small skbs in the receive queue,
- * at it can always coalesce them
+ * as it can always coalesce them
*/
- return (mptcp_data_avail(mptcp_sk(sk)) >= sk->sk_rcvlowat) ||
+ return (data_avail >= sk->sk_rcvlowat) ||
(mem_cgroup_sockets_enabled && sk->sk_memcg &&
mem_cgroup_under_socket_pressure(sk->sk_memcg)) ||
READ_ONCE(tcp_memory_pressure);