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| author |   Geliang Tang <geliangtang@gmail.com> | 2021-03-26 11:26:38 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2021-03-26 15:05:15 -0700 |
| commit | 557963c383e8209b14de91bf2a0301a41b94d8c4 (patch) | |
| tree | 1c3b382022c56e8e7996963382d884203884f2d0 /net/mptcp | |
| parent | mptcp: export lookup_anno_list_by_saddr (diff) | |
| download | linux-dev-557963c383e8209b14de91bf2a0301a41b94d8c4.tar.xz linux-dev-557963c383e8209b14de91bf2a0301a41b94d8c4.zip | |
mptcp: move to next addr when subflow creation fail
When an invalid address was announced, the subflow couldn't be created
for this address. Therefore mptcp_pm_nl_subflow_established couldn't be
invoked. Then the next addresses in the local address list didn't have a
chance to be announced.
This patch invokes the new function mptcp_pm_add_addr_echoed when the
address is echoed. In it, use mptcp_lookup_anno_list_by_saddr to check
whether this address is in the anno_list. If it is, PM schedules the
status MPTCP_PM_SUBFLOW_ESTABLISHED to invoke
mptcp_pm_create_subflow_or_signal_addr to deal with the next address in
the local address list.
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>
Diffstat (limited to 'net/mptcp')
| -rw-r--r-- | net/mptcp/options.c | 1 | ||||
| -rw-r--r-- | net/mptcp/pm.c | 15 | ||||
| -rw-r--r-- | net/mptcp/protocol.h | 2 |
3 files changed, 18 insertions, 0 deletions
diff --git a/net/mptcp/options.c b/net/mptcp/options.c index 2d2340b22f61..69cafaacc31b 100644 --- a/net/mptcp/options.c +++ b/net/mptcp/options.c @@ -1040,6 +1040,7 @@ void mptcp_incoming_options(struct sock *sk, struct sk_buff *skb) mptcp_pm_add_addr_received(msk, &addr); MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_ADDADDR); } else { + mptcp_pm_add_addr_echoed(msk, &addr); mptcp_pm_del_add_timer(msk, &addr); MPTCP_INC_STATS(sock_net(sk), MPTCP_MIB_ECHOADD); } diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c index 0a06d5947a73..966942d1013f 100644 --- a/net/mptcp/pm.c +++ b/net/mptcp/pm.c @@ -196,6 +196,21 @@ void mptcp_pm_add_addr_received(struct mptcp_sock *msk, spin_unlock_bh(&pm->lock); } +void mptcp_pm_add_addr_echoed(struct mptcp_sock *msk, + struct mptcp_addr_info *addr) +{ + struct mptcp_pm_data *pm = &msk->pm; + + pr_debug("msk=%p", msk); + + spin_lock_bh(&pm->lock); + + if (mptcp_lookup_anno_list_by_saddr(msk, addr) && READ_ONCE(pm->work_pending)) + mptcp_pm_schedule_work(msk, MPTCP_PM_SUBFLOW_ESTABLISHED); + + spin_unlock_bh(&pm->lock); +} + void mptcp_pm_add_addr_send_ack(struct mptcp_sock *msk) { if (!mptcp_pm_should_add_signal(msk)) diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h index 9c51444b26cf..b417b3591e07 100644 --- a/net/mptcp/protocol.h +++ b/net/mptcp/protocol.h @@ -647,6 +647,8 @@ void mptcp_pm_subflow_established(struct mptcp_sock *msk); void mptcp_pm_subflow_closed(struct mptcp_sock *msk, u8 id); void mptcp_pm_add_addr_received(struct mptcp_sock *msk, const struct mptcp_addr_info *addr); +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_rm_addr_received(struct mptcp_sock *msk, const struct mptcp_rm_list *rm_list); |