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mptcp: send ack for rm_addr

Browse source 
This patch changes the sending ACK conditions for the ADD_ADDR, send an
ACK packet for RM_ADDR too.

In mptcp_pm_remove_addr, invoke mptcp_pm_nl_add_addr_send_ack to send
the ACK packet.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-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 2021-03-26 11:26:40 -07:00 committed by David S. Miller
parent b65d95adb8
commit 8dd5efb1f9
3 changed files with 7 additions and 5 deletions
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1
net/mptcp/pm.c
View file

@ -53,6 +53,7 @@ int mptcp_pm_remove_addr(struct mptcp_sock *msk, const struct mptcp_rm_list *rm_
msk->pm.rm_list_tx = *rm_list;
rm_addr |= BIT(MPTCP_RM_ADDR_SIGNAL);
WRITE_ONCE(msk->pm.addr_signal, rm_addr);
mptcp_pm_nl_add_addr_send_ack(msk);
return 0;
}

10
net/mptcp/pm_netlink.c
View file

@ -56,8 +56,6 @@ struct pm_nl_pernet {
#define MPTCP_PM_ADDR_MAX 8
#define ADD_ADDR_RETRANS_MAX 3
static void mptcp_pm_nl_add_addr_send_ack(struct mptcp_sock *msk);
static bool addresses_equal(const struct mptcp_addr_info *a,
struct mptcp_addr_info *b, bool use_port)
{
@ -524,14 +522,15 @@ static void mptcp_pm_nl_add_addr_received(struct mptcp_sock *msk)
mptcp_pm_nl_add_addr_send_ack(msk);
}
static void mptcp_pm_nl_add_addr_send_ack(struct mptcp_sock *msk)
void mptcp_pm_nl_add_addr_send_ack(struct mptcp_sock *msk)
{
struct mptcp_subflow_context *subflow;
msk_owned_by_me(msk);
lockdep_assert_held(&msk->pm.lock);
if (!mptcp_pm_should_add_signal(msk))
if (!mptcp_pm_should_add_signal(msk) &&
!mptcp_pm_should_rm_signal(msk))
return;
__mptcp_flush_join_list(msk);
@ -540,7 +539,8 @@ static void mptcp_pm_nl_add_addr_send_ack(struct mptcp_sock *msk)
struct sock *ssk = mptcp_subflow_tcp_sock(subflow);
spin_unlock_bh(&msk->pm.lock);
pr_debug("send ack for add_addr%s%s",
pr_debug("send ack for %s%s%s",
mptcp_pm_should_add_signal(msk) ? "add_addr" : "rm_addr",
mptcp_pm_should_add_signal_ipv6(msk) ? " [ipv6]" : "",
mptcp_pm_should_add_signal_port(msk) ? " [port]" : "");

1
net/mptcp/protocol.h
View file

@ -650,6 +650,7 @@ void mptcp_pm_add_addr_received(struct mptcp_sock *msk,
void mptcp_pm_add_addr_echoed(struct mptcp_sock *msk,
struct mptcp_addr_info *addr);
void mptcp_pm_add_addr_send_ack(struct mptcp_sock *msk);
void mptcp_pm_nl_add_addr_send_ack(struct mptcp_sock *msk);
void mptcp_pm_rm_addr_received(struct mptcp_sock *msk,
const struct mptcp_rm_list *rm_list);
void mptcp_pm_mp_prio_received(struct sock *sk, u8 bkup);