From: Yonglong Li <liyonglong@chinatelecom.cn>
To: mptcp@lists.linux.dev
Cc: mathew.j.martineau@linux.intel.com, geliangtang@gmail.com,
Yonglong Li <liyonglong@chinatelecom.cn>
Subject: [PATCH v7 1/5] mptcp: fix ADD_ADDR and RM_ADDR maybe flush addr_signal each other
Date: Wed, 30 Jun 2021 18:24:09 +0800 [thread overview]
Message-ID: <1625048653-6825-2-git-send-email-liyonglong@chinatelecom.cn> (raw)
In-Reply-To: <1625048653-6825-1-git-send-email-liyonglong@chinatelecom.cn>
ADD_ADDR share pm.addr_signal with RM_ADDR, so after RM_ADDR/ADD_ADDR
done we should not clean ADD_ADDR/RM_ADDR's addr_signal.
Signed-off-by: Yonglong Li <liyonglong@chinatelecom.cn>
---
net/mptcp/pm.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index 9d00fa6..50079e5 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 +268,8 @@ 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);
+ add_addr = msk->pm.addr_signal & ~(BIT(MPTCP_ADD_ADDR_SIGNAL) | BIT(MPTCP_ADD_ADDR_ECHO));
+ WRITE_ONCE(msk->pm.addr_signal, add_addr);
ret = true;
out_unlock:
@@ -279,6 +281,7 @@ 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 +289,17 @@ 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:
--
1.8.3.1
next prev parent reply other threads:[~2021-06-30 10:24 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-30 10:24 [PATCH v7 0/4] mptcp: fix conflicts when using pm.add_signal in ADD_ADDR/echo and RM_ADDR process Yonglong Li
2021-06-30 10:24 ` Yonglong Li [this message]
2021-06-30 10:37 ` [PATCH v7 1/5] mptcp: fix ADD_ADDR and RM_ADDR maybe flush addr_signal each other Geliang Tang
2021-07-02 6:23 ` Yonglong Li
2021-06-30 10:24 ` [PATCH v7 2/5] mptcp: make MPTCP_ADD_ADDR_SIGNAL and MPTCP_ADD_ADDR_ECHO separate Yonglong Li
2021-06-30 10:24 ` [PATCH v7 3/5] mptcp: build ADD_ADDR/echo-ADD_ADDR option according pm.add_signal Yonglong Li
2021-06-30 11:14 ` Geliang Tang
2021-07-02 6:15 ` Yonglong Li
2021-06-30 10:24 ` [PATCH v7 4/5] mptcp: remove some double-check Yonglong Li
2021-06-30 10:57 ` Geliang Tang
2021-07-02 6:22 ` Yonglong Li
2021-07-02 8:06 ` Geliang Tang
2021-06-30 10:24 ` [PATCH v7 5/5] mptcp: remove MPTCP_ADD_ADDR_IPV6 and MPTCP_ADD_ADDR_PORT Yonglong Li
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