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mptcp: add the incoming RM_ADDR support

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This patch added the RM_ADDR option parsing logic:

We parsed the incoming options to find if the rm_addr option is received,
and called mptcp_pm_rm_addr_received to schedule PM work to a new status,
named MPTCP_PM_RM_ADDR_RECEIVED.

PM work got this status, and called mptcp_pm_nl_rm_addr_received to handle
it.

In mptcp_pm_nl_rm_addr_received, we closed the subflow matching the rm_id,
and updated PM counter.

Suggested-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Suggested-by: Paolo Abeni <pabeni@redhat.com>
Suggested-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Geliang Tang
2020-09-24 08:29:49 +08:00
committed by David S. Miller
parent 5cb104ae55
commit d0876b2284
5 changed files with 66 additions and 4 deletions
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12
net/mptcp/pm.c
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@@ -149,6 +149,18 @@ void mptcp_pm_add_addr_received(struct mptcp_sock *msk,
spin_unlock_bh(&pm->lock);
}
void mptcp_pm_rm_addr_received(struct mptcp_sock *msk, u8 rm_id)
{
struct mptcp_pm_data *pm = &msk->pm;
pr_debug("msk=%p remote_id=%d", msk, rm_id);
spin_lock_bh(&pm->lock);
mptcp_pm_schedule_work(msk, MPTCP_PM_RM_ADDR_RECEIVED);
pm->rm_id = rm_id;
spin_unlock_bh(&pm->lock);
}
/* path manager helpers */
bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, unsigned int remaining,