[PATCH net-next 05/12] mptcp: pm: add struct_group in mptcp_pm_data

Matthieu Baerts (NGI0)
2025-03-13T10:22:19Z

From: Geliang Tang <tanggeliang@kylinos.cn>

This patch adds a "struct_group(reset, ...)" in struct mptcp_pm_data to
simplify the reset, and make sure we don't miss any.

Suggested-by: Matthieu Baerts <matttbe@kernel.org>
Signed-off-by: Geliang Tang <tanggeliang@kylinos.cn>
Reviewed-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Signed-off-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
---
net/mptcp/pm.c | 13 +------------
net/mptcp/protocol.h | 5 +++++
2 files changed, 6 insertions(+), 12 deletions(-)

diff --git a/net/mptcp/pm.c b/net/mptcp/pm.c
index af009661477b1743b11221c0d59b53cd89e6e791..85ee999729a1c37f42bb21490d7f68d186e6734f 100644
--- a/net/mptcp/pm.c
+++ b/net/mptcp/pm.c
@@ -978,10 +978,7 @@ void mptcp_pm_data_reset(struct mptcp_sock *msk)
u8 pm_type = mptcp_get_pm_type(sock_net((struct sock *)msk));
struct mptcp_pm_data *pm = &msk->pm;

- pm->add_addr_signaled = 0;
- pm->add_addr_accepted = 0;
- pm->local_addr_used = 0;
- pm->subflows = 0;
+ memset(&pm->reset, 0, sizeof(pm->reset));
pm->rm_list_tx.nr = 0;
pm->rm_list_rx.nr = 0;
WRITE_ONCE(pm->pm_type, pm_type);
@@ -1002,15 +999,7 @@ void mptcp_pm_data_reset(struct mptcp_sock *msk)
WRITE_ONCE(pm->accept_subflow, subflows_allowed);

bitmap_fill(pm->id_avail_bitmap, MPTCP_PM_MAX_ADDR_ID + 1);
- } else {
- WRITE_ONCE(pm->work_pending, 0);
- WRITE_ONCE(pm->accept_addr, 0);
- WRITE_ONCE(pm->accept_subflow, 0);
}
-
- WRITE_ONCE(pm->addr_signal, 0);
- WRITE_ONCE(pm->remote_deny_join_id0, false);
- pm->status = 0;
}

void mptcp_pm_data_init(struct mptcp_sock *msk)
diff --git a/net/mptcp/protocol.h b/net/mptcp/protocol.h
index ffb70fe08181815c23629354f78e3bdbe599e703..15e2a03025ecb4cae44ccb700fcbbdd06ab806d1 100644
--- a/net/mptcp/protocol.h
+++ b/net/mptcp/protocol.h
@@ -223,6 +223,8 @@ struct mptcp_pm_data {

spinlock_t lock; /*protects the whole PM data */

+ struct_group(reset,
+
u8 addr_signal;
bool server_side;
bool work_pending;
@@ -235,6 +237,9 @@ struct mptcp_pm_data {
u8 pm_type;
u8 subflows;
u8 status;
+
+ );
+
DECLARE_BITMAP(id_avail_bitmap, MPTCP_PM_MAX_ADDR_ID + 1);
struct mptcp_rm_list rm_list_tx;
struct mptcp_rm_list rm_list_rx;

--
2.48.1