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net/utils/net_bufpool: add lock to struct net_bufpool_s and bufpool_navail

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Add a lock to net_bufpool to simplify the protocol stack code.

Signed-off-by: zhanghongyu <zhanghongyu@xiaomi.com>
This commit is contained in:
zhanghongyu
2025-04-29 20:14:52 +08:00
committed by Xiang Xiao
parent 2c0e105cad
commit e87082b195
9 changed files with 155 additions and 55 deletions
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net/can/can_conn.c
+4 -5
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@@ -62,7 +62,6 @@
NET_BUFPOOL_DECLARE(g_can_connections, sizeof(struct can_conn_s),
CONFIG_CAN_PREALLOC_CONNS, CONFIG_CAN_ALLOC_CONNS,
CONFIG_CAN_MAX_CONNS);
static mutex_t g_free_lock = NXMUTEX_INITIALIZER;
/* A list of all allocated NetLink connections */
@@ -100,7 +99,7 @@ FAR struct can_conn_s *can_alloc(void)
/* The free list is protected by a a mutex. */
nxmutex_lock(&g_free_lock);
NET_BUFPOLL_LOCK(g_can_connections);
conn = NET_BUFPOOL_TRYALLOC(g_can_connections);
if (conn != NULL)
@@ -128,7 +127,7 @@ FAR struct can_conn_s *can_alloc(void)
dq_addlast(&conn->sconn.node, &g_active_can_connections);
}
nxmutex_unlock(&g_free_lock);
NET_BUFPOLL_UNLOCK(g_can_connections);
return conn;
}
@@ -147,7 +146,7 @@ void can_free(FAR struct can_conn_s *conn)
DEBUGASSERT(conn->crefs == 0);
nxmutex_lock(&g_free_lock);
NET_BUFPOLL_LOCK(g_can_connections);
/* Remove the connection from the active list */
@@ -157,7 +156,7 @@ void can_free(FAR struct can_conn_s *conn)
NET_BUFPOOL_FREE(g_can_connections, conn);
nxmutex_unlock(&g_free_lock);
NET_BUFPOLL_UNLOCK(g_can_connections);
}
/****************************************************************************