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mptcp: pm: avoid code duplication to lookup endp

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The helper __lookup_addr() can be used in mptcp_pm_nl_get_local_id()
and mptcp_pm_nl_is_backup() to simplify the code, and avoid code
duplication.

Co-developed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20241115-net-next-mptcp-pm-lockless-dump-v1-2-f4a1bcb4ca2c@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Geliang Tang 2024-11-15 17:52:35 +01:00 committed by Jakub Kicinski
parent 3fbb27b7f8
commit 1d7fa6ceb9
1 changed files with 6 additions and 14 deletions
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20
net/mptcp/pm_netlink.c
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@ -1143,17 +1143,13 @@ int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc
{
struct mptcp_pm_addr_entry *entry;
struct pm_nl_pernet *pernet;
int ret = -1;
int ret;
pernet = pm_nl_get_pernet_from_msk(msk);
rcu_read_lock();
list_for_each_entry_rcu(entry, &pernet->local_addr_list, list) {
if (mptcp_addresses_equal(&entry->addr, skc, entry->addr.port)) {
ret = entry->addr.id;
break;
}
}
entry = __lookup_addr(pernet, skc);
ret = entry ? entry->addr.id : -1;
rcu_read_unlock();
if (ret >= 0)
return ret;
@ -1180,15 +1176,11 @@ bool mptcp_pm_nl_is_backup(struct mptcp_sock *msk, struct mptcp_addr_info *skc)
{
struct pm_nl_pernet *pernet = pm_nl_get_pernet_from_msk(msk);
struct mptcp_pm_addr_entry *entry;
bool backup = false;
bool backup;
rcu_read_lock();
list_for_each_entry_rcu(entry, &pernet->local_addr_list, list) {
if (mptcp_addresses_equal(&entry->addr, skc, entry->addr.port)) {
backup = !!(entry->flags & MPTCP_PM_ADDR_FLAG_BACKUP);
break;
}
}
entry = __lookup_addr(pernet, skc);
backup = entry && !!(entry->flags & MPTCP_PM_ADDR_FLAG_BACKUP);
rcu_read_unlock();
return backup;