Commit 80992017 authored by Paolo Abeni's avatar Paolo Abeni Committed by David S. Miller
Browse files

mptcp: add work queue skeleton 



Will be extended with functionality in followup patches.
Initial user is moving skbs from subflows receive queue to
the mptcp-level receive queue.

Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
Signed-off-by: default avatarFlorian Westphal <fw@strlen.de>
Reviewed-by: default avatarMat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 101f6f85

net/mptcp/protocol.c

+22 −0
Original line number Diff line number Diff line
@@ -551,12 +551,24 @@ static void __mptcp_close_ssk(struct sock *sk, struct sock *ssk, 
	}

}



static void mptcp_worker(struct work_struct *work)

{

	struct mptcp_sock *msk = container_of(work, struct mptcp_sock, work);

	struct sock *sk = &msk->sk.icsk_inet.sk;



	lock_sock(sk);



	release_sock(sk);

	sock_put(sk);

}



static int __mptcp_init_sock(struct sock *sk)

{

	struct mptcp_sock *msk = mptcp_sk(sk);



	INIT_LIST_HEAD(&msk->conn_list);

	__set_bit(MPTCP_SEND_SPACE, &msk->flags);

	INIT_WORK(&msk->work, mptcp_worker);



	msk->first = NULL;
@@ -571,6 +583,14 @@ static int mptcp_init_sock(struct sock *sk) 
	return __mptcp_init_sock(sk);

}



static void mptcp_cancel_work(struct sock *sk)

{

	struct mptcp_sock *msk = mptcp_sk(sk);



	if (cancel_work_sync(&msk->work))

		sock_put(sk);

}



static void mptcp_subflow_shutdown(struct sock *ssk, int how)

{

	lock_sock(ssk);
@@ -616,6 +636,8 @@ static void mptcp_close(struct sock *sk, long timeout) 
		__mptcp_close_ssk(sk, ssk, subflow, timeout);

	}



	mptcp_cancel_work(sk);



	sk_common_release(sk);

}

net/mptcp/protocol.h

+1 −0
Original line number Diff line number Diff line
@@ -70,6 +70,7 @@ struct mptcp_sock { 
	u32		token;

	unsigned long	flags;

	bool		can_ack;

	struct work_struct work;

	struct list_head conn_list;

	struct skb_ext	*cached_ext;	/* for the next sendmsg */

	struct socket	*subflow; /* outgoing connect/listener/!mp_capable */

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