Adding upstream version 255.4.upstream/255.4

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 141 insertions, 0 deletions

diff --git a/src/network/networkd-queue.h b/src/network/networkd-queue.h
new file mode 100644
index 0000000..e58d1be
--- /dev/null
+++ b/src/network/networkd-queue.h
@@ -0,0 +1,141 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+#pragma once
+
+#include "sd-event.h"
+#include "sd-netlink.h"
+
+#include "alloc-util.h"
+#include "hash-funcs.h"
+
+typedef struct Link Link;
+typedef struct NetDev NetDev;
+typedef struct Manager Manager;
+typedef struct Request Request;
+
+typedef int (*request_process_func_t)(Request *req, Link *link, void *userdata);
+typedef int (*request_netlink_handler_t)(sd_netlink *nl, sd_netlink_message *m, Request *req, Link *link, void *userdata);
+
+typedef enum RequestType {
+        REQUEST_TYPE_ACTIVATE_LINK,
+        REQUEST_TYPE_ADDRESS,
+        REQUEST_TYPE_ADDRESS_LABEL,
+        REQUEST_TYPE_BRIDGE_FDB,
+        REQUEST_TYPE_BRIDGE_MDB,
+        REQUEST_TYPE_DHCP_SERVER,
+        REQUEST_TYPE_DHCP4_CLIENT,
+        REQUEST_TYPE_DHCP6_CLIENT,
+        REQUEST_TYPE_IPV6_PROXY_NDP,
+        REQUEST_TYPE_NDISC,
+        REQUEST_TYPE_NEIGHBOR,
+        REQUEST_TYPE_NETDEV_INDEPENDENT,
+        REQUEST_TYPE_NETDEV_STACKED,
+        REQUEST_TYPE_NEXTHOP,
+        REQUEST_TYPE_RADV,
+        REQUEST_TYPE_ROUTE,
+        REQUEST_TYPE_ROUTING_POLICY_RULE,
+        REQUEST_TYPE_SET_LINK_ADDRESS_GENERATION_MODE, /* Setting IPv6LL address generation mode. */
+        REQUEST_TYPE_SET_LINK_BOND,                    /* Setting bond configs. */
+        REQUEST_TYPE_SET_LINK_BRIDGE,                  /* Setting bridge configs. */
+        REQUEST_TYPE_SET_LINK_BRIDGE_VLAN,             /* Setting bridge VLAN configs. */
+        REQUEST_TYPE_SET_LINK_CAN,                     /* Setting CAN interface configs. */
+        REQUEST_TYPE_SET_LINK_FLAGS,                   /* Setting IFF_NOARP or friends. */
+        REQUEST_TYPE_SET_LINK_GROUP,                   /* Setting interface group. */
+        REQUEST_TYPE_SET_LINK_IPOIB,                   /* Setting IPoIB configs. */
+        REQUEST_TYPE_SET_LINK_MAC,                     /* Setting MAC address. */
+        REQUEST_TYPE_SET_LINK_MASTER,                  /* Setting IFLA_MASTER. */
+        REQUEST_TYPE_SET_LINK_MTU,                     /* Setting MTU. */
+        REQUEST_TYPE_SRIOV,
+        REQUEST_TYPE_TC_CLASS,
+        REQUEST_TYPE_TC_QDISC,
+        REQUEST_TYPE_UP_DOWN,
+        _REQUEST_TYPE_MAX,
+        _REQUEST_TYPE_INVALID = -EINVAL,
+} RequestType;
+
+struct Request {
+        unsigned n_ref;
+
+        Manager *manager; /* must be non-NULL */
+        Link *link; /* can be NULL */
+
+        RequestType type;
+
+        /* Target object, e.g. Address, Route, NetDev, and so on. */
+        void *userdata;
+        /* freeing userdata when the request is completed or failed. */
+        mfree_func_t free_func;
+
+        /* hash and compare functions for userdata, used for dedup requests. */
+        hash_func_t hash_func;
+        compare_func_t compare_func;
+
+        /* Checks the request dependencies, and then processes this request, e.g. call address_configure().
+         * Return 1 when processed, 0 when its dependencies not resolved, and negative errno on failure. */
+        request_process_func_t process;
+
+        /* incremented when requested, decremented when request is completed or failed. */
+        unsigned *counter;
+        /* called in netlink handler, the 'counter' is decremented before this is called.
+         * If this is specified, then the 'process' function must increment the reference of this
+         * request, and pass this request to the netlink_call_async(), and set the destroy function
+         * to the slot. */
+        request_netlink_handler_t netlink_handler;
+
+        bool waiting_reply;
+};
+
+Request *request_ref(Request *req);
+Request *request_unref(Request *req);
+DEFINE_TRIVIAL_CLEANUP_FUNC(Request*, request_unref);
+
+void request_detach(Manager *manager, Request *req);
+
+int netdev_queue_request(
+                NetDev *netdev,
+                request_process_func_t process,
+                Request **ret);
+
+int link_queue_request_full(
+                Link *link,
+                RequestType type,
+                void *userdata,
+                mfree_func_t free_func,
+                hash_func_t hash_func,
+                compare_func_t compare_func,
+                request_process_func_t process,
+                unsigned *counter,
+                request_netlink_handler_t netlink_handler,
+                Request **ret);
+
+static inline int link_queue_request(
+                Link *link,
+                RequestType type,
+                request_process_func_t process,
+                Request **ret) {
+
+        return link_queue_request_full(link, type, NULL, NULL, NULL, NULL,
+                                       process, NULL, NULL, ret);
+}
+
+#define link_queue_request_safe(link, type, userdata, free_func, hash_func, compare_func, process, counter, netlink_handler, ret) \
+        ({                                                              \
+                typeof(userdata) (*_f)(typeof(userdata)) = (free_func); \
+                void (*_h)(const typeof(*userdata)*, struct siphash*) = (hash_func); \
+                int (*_c)(const typeof(*userdata)*, const typeof(*userdata)*) = (compare_func); \
+                int (*_p)(Request*, Link*, typeof(userdata)) = (process); \
+                int (*_n)(sd_netlink*, sd_netlink_message*, Request*, Link*, typeof(userdata)) = (netlink_handler); \
+                                                                        \
+                link_queue_request_full(link, type, userdata,           \
+                                        (mfree_func_t) _f,              \
+                                        (hash_func_t) _h,               \
+                                        (compare_func_t) _c,            \
+                                        (request_process_func_t) _p,    \
+                                        counter,                        \
+                                        (request_netlink_handler_t) _n, \
+                                        ret);                           \
+        })
+
+int manager_process_requests(sd_event_source *s, void *userdata);
+int request_call_netlink_async(sd_netlink *nl, sd_netlink_message *m, Request *req);
+
+const char* request_type_to_string(RequestType t) _const_;