| /linux/Documentation/userspace-api/netlink/ |
| H A D | intro.rst | 4 Introduction to Netlink
7 Netlink is often described as an ioctl() replacement.
12 To achieve this Netlink uses a minimal fixed-format metadata header
18 netlink as it is used today and dives into more "historical" uses
24 Netlink communication happens over sockets, a socket needs to be
36 A very simplified flow of a Netlink "call" will therefore look
48 Netlink also provides natural support for "dumping", i.e. communicating
70 it is opening a Netlink socket, with all headers provided by the user
71 (hence NETLINK, RAW). The last argument is the protocol within Netlink.
75 Classic vs Generic Netlink
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| H A D | specs.rst | 4 Netlink protocol specifications (in YAML)
7 Netlink protocol specifications are complete, machine readable descriptions of
8 Netlink protocols written in YAML. The goal of the specifications is to allow
9 separating Netlink parsing from user space logic and minimize the amount of
10 hand written Netlink code for each new family, command, attribute.
11 Netlink specs should be complete and not depend on any other spec
22 YAML specifications can be found under ``Documentation/netlink/specs/``
34 There are four schema levels for Netlink specs, from the simplest used
45 - ``genetlink-legacy`` - Generic Netlink catch all schema supporting quirks of
47 - ``netlink-raw`` - catch all schema supporting pre-Generic Netlink protocols
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| H A D | index.rst | 4 Netlink Handbook
7 Netlink documentation for users.
17 netlink-raw
20 - :ref:`Documentation/core-api/netlink.rst <kernel_netlink>`
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| /linux/drivers/infiniband/core/ |
| H A D | iwpm_util.h | 47 #include <net/netlink.h>
97 * iwpm_get_nlmsg_request - Allocate and initialize netlink message request
98 * @nlmsg_seq: Sequence number of the netlink message
99 * @nl_client: The index of the netlink client
102 * Returns the newly allocated netlink request object if successful,
109 * iwpm_free_nlmsg_request - Deallocate netlink message request
110 * @kref: Holds reference of netlink message request
115 * iwpm_find_nlmsg_request - Find netlink message request in the request list
116 * @echo_seq: Sequence number of the netlink request to find
118 * Returns the found netlink message request,
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| H A D | iwpm_msg.c | 52 * iwpm_register_pid - Send a netlink query to userspace
55 * @nl_client: The index of the netlink client
83 err_str = "Unable to allocate netlink request"; in iwpm_register_pid()
113 skb = NULL; /* skb is freed in the netlink send-op handling */ in iwpm_register_pid()
130 * iwpm_add_mapping - Send a netlink add mapping request to
133 * @nl_client: The index of the netlink client
166 err_str = "Unable to allocate netlink request"; in iwpm_add_mapping()
198 skb = NULL; /* skb is freed in the netlink send-op handling */ in iwpm_add_mapping()
218 * @nl_client: The index of the netlink client
251 err_str = "Unable to allocate netlink request"; in iwpm_add_and_query_mapping()
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| H A D | netlink.c | 37 #include <net/netlink.h>
47 /* Synchronizes between ongoing netlink commands and netlink client
71 * RDMA netlink protocol without updating the array above. in is_nl_msg_valid()
87 * Currently only NLDEV client is supporting netlink commands in in get_cb_table()
101 request_module("rdma-netlink-subsys-%u", type); in get_cb_table()
203 * It calls to the callback for the netlink messages without NLM_F_REQUEST
227 * runs backward netlink scheme. Kernel initiates messages in rdma_nl_rcv_skb()
305 "Netlink client %d wasn't released prior to unloading %s\n", in rdma_nl_exit()
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| /linux/include/rdma/ |
| H A D | rdma_netlink.h | 6 #include <linux/netlink.h>
29 /* Define this module as providing netlink services for NETLINK_RDMA, with
39 MODULE_ALIAS("rdma-netlink-subsys-" __stringify(_val))
42 * Register client in RDMA netlink.
50 * Remove a client from IB netlink.
57 * @skb: The netlink skb.
58 * @nlh: Pointer to put the header of the new netlink message.
61 * @client: Calling IB netlink client.
69 * @skb: The netlink skb.
70 * @nlh: Header of the netlink message to append the attribute to.
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| /linux/include/net/ |
| H A D | netlink.h | 6 #include <linux/netlink.h>
11 * Netlink Messages and Attributes Interface (As Seen On TV)
34 * struct nlmsghdr netlink message header
37 * nlmsg_new() create a new netlink message
38 * nlmsg_put() add a netlink message to an skb
40 * nlmsg_end() finalize netlink message
44 * nlmsg_consume() free a netlink message (expected)
45 * nlmsg_free() free a netlink message (drop)
65 * nlmsg_next(nlh, remaining) get next netlink message
69 * nlmsg_validate() validate netlink messag
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| H A D | rtnetlink.h | 7 #include <net/netlink.h>
113 * @peer_type: Peer device specific netlink attribute number (e.g. VETH_INFO_PEER)
114 * @maxtype: Highest device specific netlink attribute number
115 * @policy: Netlink policy for device specific attribute validation
116 * @validate: Optional validation function for netlink/changelink parameters
126 * specific netlink attributes
127 * @fill_info: Function to dump device specific netlink attributes
212 * specific netlink attributes.
214 * netlink attributes.
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| /linux/tools/net/ynl/pyynl/lib/ |
| H A D | ynl.py | 22 # Generic Netlink code which should really be in some library, but I can't quickly find one.
26 class Netlink: class
27 # Netlink socket
35 # Netlink message
109 return f"Netlink error: {os.strerror(self.error)}\n{self.nl_msg}"
131 self.type = self._type & ~Netlink.NLA_TYPE_MASK
132 self.is_nest = self._type & Netlink.NLA_F_NESTED
204 if self.nl_type == Netlink.NLMSG_ERROR:
208 elif self.nl_type == Netlink.NLMSG_DONE:
214 if self.nl_flags & Netlink.NLM_F_ACK_TLVS and extack_off:
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| /linux/include/uapi/linux/netfilter/ |
| H A D | nf_tables.h | 73 * enum nf_tables_msg_types - nf_tables netlink message types
151 * enum nft_list_attributes - nf_tables generic list netlink attributes
163 * enum nft_hook_attributes - nf_tables netfilter hook netlink attributes
197 * enum nft_table_attributes - nf_tables table netlink attributes
203 * @NFTA_TABLE_OWNER: owner of this table through netlink portID (NLA_U32)
228 * enum nft_chain_attributes - nf_tables chain netlink attributes
261 * enum nft_rule_attributes - nf_tables rule netlink attributes
380 * enum nft_set_attributes - nf_tables set netlink attributes
440 * enum nft_set_elem_attributes - nf_tables set element netlink attributes
471 * enum nft_set_elem_list_attributes - nf_tables set element list netlink attribute
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| /linux/Documentation/driver-api/ |
| H A D | connector.rst | 7 Kernel connector - new netlink based userspace <-> kernel space easy
11 netlink based network. One must register a callback and an identifier.
12 When the driver receives a special netlink message with the appropriate
25 netlink based networking for inter-process communication in a significantly
63 netlink group to the user which is equal to its id.idx.
102 Netlink itself is not a reliable protocol. That means that messages can
111 2.6.14 has a new netlink socket implementation, which by default does not
112 allow people to send data to netlink groups other than 1.
113 So, if you wish to use a netlink socket (for example using connector)
138 2.6.14 netlink code only allows to select a group which is less or equal to
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| /linux/Documentation/netlink/ |
| H A D | netlink-raw.yaml | 4 $id: http://kernel.org/schemas/netlink/netlink-raw.yaml#
25 description: Specification of a raw netlink protocol
31 description: Name of the netlink family.
37 enum: [ netlink-raw ] # Trim
38 # Start netlink-raw
40 description: Protocol number to use for netlink-raw
42 # End netlink-raw
136 The netlink attribute type. Members of type 'binary' or 'pad'
231 description: The netlink attribute type
299 # Start netlink-raw
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| /linux/tools/lib/thermal/ |
| H A D | thermal_nl.h | 6 #include <netlink/netlink.h>
7 #include <netlink/genl/genl.h>
8 #include <netlink/genl/mngt.h>
9 #include <netlink/genl/ctrl.h>
30 * Low level netlink
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| /linux/net/batman-adv/ |
| H A D | bat_v.c | 21 #include <linux/netlink.h>
30 #include <net/netlink.h>
41 #include "netlink.h"
120 * @msg: Netlink message to dump into
121 * @portid: Port making netlink request
122 * @seq: Sequence number of netlink message
166 * @msg: Netlink message to dump into
167 * @portid: Port making netlink request
168 * @seq: Sequence number of netlink message
204 * @msg: Netlink message to dump into
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| H A D | netlink.c | 7 #include "netlink.h"
26 #include <linux/netlink.h>
34 #include <net/netlink.h>
170 * @msg: Netlink message to dump into
216 * @msg: Netlink message to dump into
219 * @portid: Port making netlink request
402 * @skb: Netlink message with request data
431 * @skb: Netlink message with request data
620 * @msg: netlink message to be sent back
635 * batadv_netlink_tpmeter_notify() - send tp_meter result via netlink to client
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| H A D | bat_algo.c | 12 #include <linux/netlink.h>
18 #include <net/netlink.h>
22 #include "netlink.h"
152 * @msg: netlink message to be sent back
183 * @msg: netlink message to be sent back
184 * @cb: Parameters to the netlink request
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| /linux/fs/smb/client/ |
| H A D | netlink.c | 3 * Netlink routines for CIFS
11 #include "netlink.h"
60 * cifs_genl_init - Register generic netlink family
70 cifs_dbg(VFS, "%s: failed to register netlink family\n", in cifs_genl_init()
79 * cifs_genl_exit - Unregister generic netlink family
87 cifs_dbg(VFS, "%s: failed to unregister netlink family\n", in cifs_genl_exit()
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| /linux/Documentation/filesystems/ |
| H A D | quota.rst | 23 Quota netlink interface
29 Thus quota netlink interface has been designed to pass information about
33 The interface uses generic netlink framework (see
35 more details about this layer). The name of the quota generic netlink interface
37 the quota netlink protocol is not namespace aware, quota netlink messages are
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| /linux/net/netlabel/ |
| H A D | netlabel_cipso_v4.c | 23 #include <net/netlink.h>
47 /* NetLabel Generic NETLINK CIPSOv4 family */
49 /* NetLabel Netlink attribute policy */
71 * @info: the Generic NETLINK info block
112 * @info: the Generic NETLINK info block
317 * @info: the Generic NETLINK info block
356 * @info: the Generic NETLINK info block
395 * @skb: the NETLINK buffer
396 * @info: the Generic NETLINK info block
433 * @skb: the NETLINK buffer
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| H A D | netlabel_calipso.c | 24 #include <net/netlink.h>
48 /* NetLabel Generic NETLINK CALIPSO family */
51 /* NetLabel Netlink attribute policy */
83 * @info: the Generic NETLINK info block
112 * @skb: the NETLINK buffer
113 * @info: the Generic NETLINK info block
147 * @skb: the NETLINK buffer
148 * @info: the Generic NETLINK info block
247 * @skb: the NETLINK buffer
248 * @cb: the NETLINK callback
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| /linux/samples/bpf/ |
| H A D | xdp_router_ipv4_user.c | 5 #include <linux/netlink.h>
88 /* Function to parse the route entry returned by netlink
269 fprintf(stderr, "open netlink socket: %s\n", strerror(errno)); in get_route_table()
275 fprintf(stderr, "bind netlink socket: %s\n", strerror(errno)); in get_route_table()
295 fprintf(stderr, "send to netlink: %s\n", strerror(errno)); in get_route_table()
302 fprintf(stderr, "recv from netlink: %s\n", strerror(nll)); in get_route_table()
313 /* Function to parse the arp entry returned by netlink
405 fprintf(stderr, "open netlink socket: %s\n", strerror(errno)); in get_arp_table()
411 fprintf(stderr, "bind netlink socket: %s\n", strerror(errno)); in get_arp_table()
430 fprintf(stderr, "send to netlink: %s\n", strerror(errno)); in get_arp_table()
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| /linux/Documentation/accounting/ |
| H A D | taskstats.rst | 6 Taskstats is a netlink-based interface for sending per-task and
30 To get statistics during a task's lifetime, userspace opens a unicast netlink
39 to be limited and assists in flow control over the netlink interface and is
67 The data exchanged between user and kernel space is a netlink message belonging
68 to the NETLINK_GENERIC family and using the netlink attributes interface.
146 2. Defining separate statistic structs and using the netlink attributes
147 interface to return them. Since userspace processes each netlink attribute
155 processing new netlink attributes. But if the new fields expand the existing
170 - increase the receive buffer sizes for the netlink sockets opened by
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| /linux/lib/ |
| H A D | nlattr.c | 3 * NETLINK Netlink attributes
17 #include <net/netlink.h>
214 pr_warn_ratelimited("netlink: '%s': attribute type %d has an invalid length.\n", in nla_validate_range_unsigned()
414 pr_warn_ratelimited("netlink: '%s': attribute type %d has an invalid length.\n", in validate_nla()
647 pr_warn_ratelimited("netlink: %d bytes leftover after parsing attributes in process `%s'.\n", in __nla_validate_parse()
688 * to allocated Netlink buffers roughly the size of the actual
826 * nla_memcpy - Copy a netlink attribute into another memory area
828 * @src: netlink attribute to copy from
850 * @nla: netlink attribute
868 * @nla: netlink string attribute
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| /linux/tools/lib/bpf/ |
| H A D | nlattr.h | 4 * NETLINK Netlink attributes
15 #include <linux/netlink.h>
19 /* avoid multiple definition of netlink features */
82 * @nla: netlink attribute
116 * @nla: netlink attribute
|