From: Yonglong Li <liyonglong@xxxxxxxxxxxxxxx>
[ Upstream commit 119c022096f5805680c79dfa74e15044c289856d ]
ADD_ADDR shares pm.addr_signal with RM_ADDR, so after RM_ADDR/ADD_ADDR
has done, we should not clean ADD_ADDR/RM_ADDR's addr_signal.
Co-developed-by: Geliang Tang <geliangtang@xxxxxxxxx>
Signed-off-by: Geliang Tang <geliangtang@xxxxxxxxx>
Signed-off-by: Yonglong Li <liyonglong@xxxxxxxxxxxxxxx>
Signed-off-by: Mat Martineau <mathew.j.martineau@xxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
net/mptcp/pm.c | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)
diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index 639271e09604..f47b71a21b7e 100644
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c
@@ -253,6 +253,7 @@ bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
struct mptcp_addr_info *saddr, bool *echo, bool *port)
{
int ret = false;
+ u8 add_addr;
spin_lock_bh(&msk->pm.lock);
@@ -267,7 +268,11 @@ bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
goto out_unlock;
*saddr = msk->pm.local;
- WRITE_ONCE(msk->pm.addr_signal, 0);
+ if (*echo)
+ add_addr = msk->pm.addr_signal & ~BIT(MPTCP_ADD_ADDR_ECHO);
+ else
+ add_addr = msk->pm.addr_signal & ~BIT(MPTCP_ADD_ADDR_SIGNAL);
+ WRITE_ONCE(msk->pm.addr_signal, add_addr);
ret = true;
out_unlock:
@@ -279,6 +284,7 @@ bool mptcp_pm_rm_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
struct mptcp_rm_list *rm_list)
{
int ret = false, len;
+ u8 rm_addr;
spin_lock_bh(&msk->pm.lock);
@@ -286,16 +292,17 @@ bool mptcp_pm_rm_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
if (!mptcp_pm_should_rm_signal(msk))
goto out_unlock;
+ rm_addr = msk->pm.addr_signal & ~BIT(MPTCP_RM_ADDR_SIGNAL);
len = mptcp_rm_addr_len(&msk->pm.rm_list_tx);
if (len < 0) {
- WRITE_ONCE(msk->pm.addr_signal, 0);
+ WRITE_ONCE(msk->pm.addr_signal, rm_addr);
goto out_unlock;
}
if (remaining < len)
goto out_unlock;
*rm_list = msk->pm.rm_list_tx;
- WRITE_ONCE(msk->pm.addr_signal, 0);
+ WRITE_ONCE(msk->pm.addr_signal, rm_addr);
ret = true;
out_unlock:
--
2.30.2
