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mptcp: unify pm get_local_id interfaces

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[ Upstream commit 9bbec87ecf ]

This patch unifies the three PM get_local_id() interfaces:

mptcp_pm_nl_get_local_id() in mptcp/pm_netlink.c for the in-kernel PM and
mptcp_userspace_pm_get_local_id() in mptcp/pm_userspace.c for the
userspace PM.

They'll be switched in the common PM infterface mptcp_pm_get_local_id()
in mptcp/pm.c based on whether mptcp_pm_is_userspace() or not.

Also put together the declarations of these three functions in protocol.h.

Signed-off-by: Geliang Tang <geliang.tang@suse.com>
Reviewed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Reviewed-by: Larysa Zaremba <larysa.zaremba@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Stable-dep-of: f448451aa62d ("mptcp: pm: remove mptcp_pm_remove_subflow()")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Geliang Tang
2023-06-08 15:20:50 +02:00
committed by Greg Kroah-Hartman
parent 5a88e29221
commit a1e8103f3e
3 changed files with 21 additions and 21 deletions
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18
net/mptcp/pm.c
View File

@@ -415,7 +415,23 @@ out_unlock:
int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc)
{
return mptcp_pm_nl_get_local_id(msk, skc);
struct mptcp_addr_info skc_local;
struct mptcp_addr_info msk_local;
if (WARN_ON_ONCE(!msk))
return -1;
/* The 0 ID mapping is defined by the first subflow, copied into the msk
* addr
*/
mptcp_local_address((struct sock_common *)msk, &msk_local);
mptcp_local_address((struct sock_common *)skc, &skc_local);
if (mptcp_addresses_equal(&msk_local, &skc_local, false))
return 0;
if (mptcp_pm_is_userspace(msk))
return mptcp_userspace_pm_get_local_id(msk, &skc_local);
return mptcp_pm_nl_get_local_id(msk, &skc_local);
}
bool mptcp_pm_is_backup(struct mptcp_sock *msk, struct sock_common *skc)

22
net/mptcp/pm_netlink.c
View File

@@ -1091,33 +1091,17 @@ static int mptcp_pm_nl_create_listen_socket(struct sock *sk,
return 0;
}
int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct sock_common *skc)
int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc)
{
struct mptcp_pm_addr_entry *entry;
struct mptcp_addr_info skc_local;
struct mptcp_addr_info msk_local;
struct pm_nl_pernet *pernet;
int ret = -1;
if (WARN_ON_ONCE(!msk))
return -1;
/* The 0 ID mapping is defined by the first subflow, copied into the msk
* addr
*/
mptcp_local_address((struct sock_common *)msk, &msk_local);
mptcp_local_address((struct sock_common *)skc, &skc_local);
if (mptcp_addresses_equal(&msk_local, &skc_local, false))
return 0;
if (mptcp_pm_is_userspace(msk))
return mptcp_userspace_pm_get_local_id(msk, &skc_local);
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_local, entry->addr.port)) {
if (mptcp_addresses_equal(&entry->addr, skc, entry->addr.port)) {
ret = entry->addr.id;
break;
}
@@ -1131,7 +1115,7 @@ int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct sock_common *skc)
if (!entry)
return -ENOMEM;
entry->addr = skc_local;
entry->addr = *skc;
entry->addr.id = 0;
entry->addr.port = 0;
entry->ifindex = 0;

2
net/mptcp/protocol.h
View File

@@ -914,6 +914,7 @@ bool mptcp_pm_add_addr_signal(struct mptcp_sock *msk, const struct sk_buff *skb,
bool mptcp_pm_rm_addr_signal(struct mptcp_sock *msk, unsigned int remaining,
struct mptcp_rm_list *rm_list);
int mptcp_pm_get_local_id(struct mptcp_sock *msk, struct sock_common *skc);
int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc);
int mptcp_userspace_pm_get_local_id(struct mptcp_sock *msk, struct mptcp_addr_info *skc);
bool mptcp_pm_is_backup(struct mptcp_sock *msk, struct sock_common *skc);
bool mptcp_pm_nl_is_backup(struct mptcp_sock *msk, struct mptcp_addr_info *skc);
@@ -932,7 +933,6 @@ void __init mptcp_pm_nl_init(void);
void mptcp_pm_nl_work(struct mptcp_sock *msk);
void mptcp_pm_nl_rm_subflow_received(struct mptcp_sock *msk,
const struct mptcp_rm_list *rm_list);
int mptcp_pm_nl_get_local_id(struct mptcp_sock *msk, struct sock_common *skc);
unsigned int mptcp_pm_get_add_addr_signal_max(const struct mptcp_sock *msk);
unsigned int mptcp_pm_get_add_addr_accept_max(const struct mptcp_sock *msk);
unsigned int mptcp_pm_get_subflows_max(const struct mptcp_sock *msk);