Commit ef0da3b8 authored by Paolo Abeni's avatar Paolo Abeni Committed by David S. Miller
Browse files

mptcp: move address attribute into mptcp_addr_info 



So that can be accessed easily from the subflow creation
helper. No functional change intended.

Signed-off-by: default avatarPaolo Abeni <pabeni@redhat.com>
Reviewed-by: default avatarMat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 06242e44

net/mptcp/pm_netlink.c

+20 −19
Original line number Diff line number Diff line
@@ -23,8 +23,6 @@ static int pm_nl_pernet_id; 


struct mptcp_pm_addr_entry {

	struct list_head	list;

	unsigned int		flags;

	int			ifindex;

	struct mptcp_addr_info	addr;

	struct rcu_head		rcu;

};
@@ -119,7 +117,7 @@ select_local_address(const struct pm_nl_pernet *pernet, 
	rcu_read_lock();

	spin_lock_bh(&msk->join_list_lock);

	list_for_each_entry_rcu(entry, &pernet->local_addr_list, list) {

		if (!(entry->flags & MPTCP_PM_ADDR_FLAG_SUBFLOW))

		if (!(entry->addr.flags & MPTCP_PM_ADDR_FLAG_SUBFLOW))

			continue;



		/* avoid any address already in use by subflows and
@@ -150,7 +148,7 @@ select_signal_address(struct pm_nl_pernet *pernet, unsigned int pos) 
	 * can lead to additional addresses not being announced.

	 */

	list_for_each_entry_rcu(entry, &pernet->local_addr_list, list) {

		if (!(entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL))

		if (!(entry->addr.flags & MPTCP_PM_ADDR_FLAG_SIGNAL))

			continue;

		if (i++ == pos) {

			ret = entry;
@@ -210,8 +208,7 @@ static void mptcp_pm_create_subflow_or_signal_addr(struct mptcp_sock *msk) 
			msk->pm.subflows++;

			check_work_pending(msk);

			spin_unlock_bh(&msk->pm.lock);

			__mptcp_subflow_connect(sk, local->ifindex,

						&local->addr, &remote);

			__mptcp_subflow_connect(sk, &local->addr, &remote);

			spin_lock_bh(&msk->pm.lock);

			return;

		}
@@ -257,13 +254,13 @@ void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk) 
	local.family = remote.family;



	spin_unlock_bh(&msk->pm.lock);

	__mptcp_subflow_connect((struct sock *)msk, 0, &local, &remote);

	__mptcp_subflow_connect((struct sock *)msk, &local, &remote);

	spin_lock_bh(&msk->pm.lock);

}



static bool address_use_port(struct mptcp_pm_addr_entry *entry)

{

	return (entry->flags &

	return (entry->addr.flags &

		(MPTCP_PM_ADDR_FLAG_SIGNAL | MPTCP_PM_ADDR_FLAG_SUBFLOW)) ==

		MPTCP_PM_ADDR_FLAG_SIGNAL;

}
@@ -293,9 +290,9 @@ static int mptcp_pm_nl_append_new_local_addr(struct pm_nl_pernet *pernet, 
			goto out;

	}



	if (entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)

	if (entry->addr.flags & MPTCP_PM_ADDR_FLAG_SIGNAL)

		pernet->add_addr_signal_max++;

	if (entry->flags & MPTCP_PM_ADDR_FLAG_SUBFLOW)

	if (entry->addr.flags & MPTCP_PM_ADDR_FLAG_SUBFLOW)

		pernet->local_addr_max++;



	entry->addr.id = pernet->next_id++;
@@ -345,8 +342,9 @@ int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct sock_common *skc) 
	if (!entry)

		return -ENOMEM;



	entry->flags = 0;

	entry->addr = skc_local;

	entry->addr.ifindex = 0;

	entry->addr.flags = 0;

	ret = mptcp_pm_nl_append_new_local_addr(pernet, entry);

	if (ret < 0)

		kfree(entry);
@@ -460,14 +458,17 @@ static int mptcp_pm_parse_addr(struct nlattr *attr, struct genl_info *info, 
		entry->addr.addr.s_addr = nla_get_in_addr(tb[addr_addr]);



skip_family:

	if (tb[MPTCP_PM_ADDR_ATTR_IF_IDX])

		entry->ifindex = nla_get_s32(tb[MPTCP_PM_ADDR_ATTR_IF_IDX]);

	if (tb[MPTCP_PM_ADDR_ATTR_IF_IDX]) {

		u32 val = nla_get_s32(tb[MPTCP_PM_ADDR_ATTR_IF_IDX]);



		entry->addr.ifindex = val;

	}



	if (tb[MPTCP_PM_ADDR_ATTR_ID])

		entry->addr.id = nla_get_u8(tb[MPTCP_PM_ADDR_ATTR_ID]);



	if (tb[MPTCP_PM_ADDR_ATTR_FLAGS])

		entry->flags = nla_get_u32(tb[MPTCP_PM_ADDR_ATTR_FLAGS]);

		entry->addr.flags = nla_get_u32(tb[MPTCP_PM_ADDR_ATTR_FLAGS]);



	return 0;

}
@@ -535,9 +536,9 @@ static int mptcp_nl_cmd_del_addr(struct sk_buff *skb, struct genl_info *info) 
		ret = -EINVAL;

		goto out;

	}

	if (entry->flags & MPTCP_PM_ADDR_FLAG_SIGNAL)

	if (entry->addr.flags & MPTCP_PM_ADDR_FLAG_SIGNAL)

		pernet->add_addr_signal_max--;

	if (entry->flags & MPTCP_PM_ADDR_FLAG_SUBFLOW)

	if (entry->addr.flags & MPTCP_PM_ADDR_FLAG_SUBFLOW)

		pernet->local_addr_max--;



	pernet->addrs--;
@@ -593,10 +594,10 @@ static int mptcp_nl_fill_addr(struct sk_buff *skb, 
		goto nla_put_failure;

	if (nla_put_u8(skb, MPTCP_PM_ADDR_ATTR_ID, addr->id))

		goto nla_put_failure;

	if (nla_put_u32(skb, MPTCP_PM_ADDR_ATTR_FLAGS, entry->flags))

	if (nla_put_u32(skb, MPTCP_PM_ADDR_ATTR_FLAGS, entry->addr.flags))

		goto nla_put_failure;

	if (entry->ifindex &&

	    nla_put_s32(skb, MPTCP_PM_ADDR_ATTR_IF_IDX, entry->ifindex))

	if (entry->addr.ifindex &&

	    nla_put_s32(skb, MPTCP_PM_ADDR_ATTR_IF_IDX, entry->addr.ifindex))

		goto nla_put_failure;



	if (addr->family == AF_INET &&

net/mptcp/protocol.h

+3 −2
Original line number Diff line number Diff line
@@ -140,6 +140,8 @@ struct mptcp_addr_info { 
	sa_family_t		family;

	__be16			port;

	u8			id;

	u8			flags;

	int			ifindex;

	union {

		struct in_addr addr;

#if IS_ENABLED(CONFIG_MPTCP_IPV6)
@@ -358,8 +360,7 @@ bool mptcp_subflow_data_available(struct sock *sk); 
void __init mptcp_subflow_init(void);



/* called with sk socket lock held */

int __mptcp_subflow_connect(struct sock *sk, int ifindex,

			    const struct mptcp_addr_info *loc,

int __mptcp_subflow_connect(struct sock *sk, const struct mptcp_addr_info *loc,

			    const struct mptcp_addr_info *remote);

int mptcp_subflow_create_socket(struct sock *sk, struct socket **new_sock);

net/mptcp/subflow.c

+2 −3
Original line number Diff line number Diff line
@@ -1035,8 +1035,7 @@ static void mptcp_info2sockaddr(const struct mptcp_addr_info *info, 
#endif

}



int __mptcp_subflow_connect(struct sock *sk, int ifindex,

			    const struct mptcp_addr_info *loc,

int __mptcp_subflow_connect(struct sock *sk, const struct mptcp_addr_info *loc,

			    const struct mptcp_addr_info *remote)

{

	struct mptcp_sock *msk = mptcp_sk(sk);
@@ -1080,7 +1079,7 @@ int __mptcp_subflow_connect(struct sock *sk, int ifindex, 
	if (loc->family == AF_INET6)

		addrlen = sizeof(struct sockaddr_in6);

#endif

	ssk->sk_bound_dev_if = ifindex;

	ssk->sk_bound_dev_if = loc->ifindex;

	err = kernel_bind(sf, (struct sockaddr *)&addr, addrlen);

	if (err)

		goto failed;

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