2 * net/tipc/bearer.c: TIPC bearer code
4 * Copyright (c) 1996-2006, 2013-2014, Ericsson AB
5 * Copyright (c) 2004-2006, 2010-2013, Wind River Systems
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the names of the copyright holders nor the names of its
17 * contributors may be used to endorse or promote products derived from
18 * this software without specific prior written permission.
20 * Alternatively, this software may be distributed under the terms of the
21 * GNU General Public License ("GPL") version 2 as published by the Free
22 * Software Foundation.
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
28 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
29 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
30 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
31 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
32 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
33 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
34 * POSSIBILITY OF SUCH DAMAGE.
45 #define MAX_ADDR_STR 60
47 static struct tipc_media
* const media_info_array
[] = {
49 #ifdef CONFIG_TIPC_MEDIA_IB
52 #ifdef CONFIG_TIPC_MEDIA_UDP
58 static void bearer_disable(struct net
*net
, struct tipc_bearer
*b
);
61 * tipc_media_find - locates specified media object by name
63 struct tipc_media
*tipc_media_find(const char *name
)
67 for (i
= 0; media_info_array
[i
] != NULL
; i
++) {
68 if (!strcmp(media_info_array
[i
]->name
, name
))
71 return media_info_array
[i
];
75 * media_find_id - locates specified media object by type identifier
77 static struct tipc_media
*media_find_id(u8 type
)
81 for (i
= 0; media_info_array
[i
] != NULL
; i
++) {
82 if (media_info_array
[i
]->type_id
== type
)
85 return media_info_array
[i
];
89 * tipc_media_addr_printf - record media address in print buffer
91 void tipc_media_addr_printf(char *buf
, int len
, struct tipc_media_addr
*a
)
93 char addr_str
[MAX_ADDR_STR
];
97 m
= media_find_id(a
->media_id
);
99 if (m
&& !m
->addr2str(a
, addr_str
, sizeof(addr_str
)))
100 ret
= scnprintf(buf
, len
, "%s(%s)", m
->name
, addr_str
);
104 ret
= scnprintf(buf
, len
, "UNKNOWN(%u)", a
->media_id
);
105 for (i
= 0; i
< sizeof(a
->value
); i
++)
106 ret
+= scnprintf(buf
- ret
, len
+ ret
,
107 "-%02x", a
->value
[i
]);
112 * bearer_name_validate - validate & (optionally) deconstruct bearer name
113 * @name: ptr to bearer name string
114 * @name_parts: ptr to area for bearer name components (or NULL if not needed)
116 * Returns 1 if bearer name is valid, otherwise 0.
118 static int bearer_name_validate(const char *name
,
119 struct tipc_bearer_names
*name_parts
)
121 char name_copy
[TIPC_MAX_BEARER_NAME
];
127 /* copy bearer name & ensure length is OK */
128 name_copy
[TIPC_MAX_BEARER_NAME
- 1] = 0;
129 /* need above in case non-Posix strncpy() doesn't pad with nulls */
130 strncpy(name_copy
, name
, TIPC_MAX_BEARER_NAME
);
131 if (name_copy
[TIPC_MAX_BEARER_NAME
- 1] != 0)
134 /* ensure all component parts of bearer name are present */
135 media_name
= name_copy
;
136 if_name
= strchr(media_name
, ':');
140 media_len
= if_name
- media_name
;
141 if_len
= strlen(if_name
) + 1;
143 /* validate component parts of bearer name */
144 if ((media_len
<= 1) || (media_len
> TIPC_MAX_MEDIA_NAME
) ||
145 (if_len
<= 1) || (if_len
> TIPC_MAX_IF_NAME
))
148 /* return bearer name components, if necessary */
150 strcpy(name_parts
->media_name
, media_name
);
151 strcpy(name_parts
->if_name
, if_name
);
157 * tipc_bearer_find - locates bearer object with matching bearer name
159 struct tipc_bearer
*tipc_bearer_find(struct net
*net
, const char *name
)
161 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
162 struct tipc_bearer
*b
;
165 for (i
= 0; i
< MAX_BEARERS
; i
++) {
166 b
= rtnl_dereference(tn
->bearer_list
[i
]);
167 if (b
&& (!strcmp(b
->name
, name
)))
173 void tipc_bearer_add_dest(struct net
*net
, u32 bearer_id
, u32 dest
)
175 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
176 struct tipc_bearer
*b
;
179 b
= rcu_dereference_rtnl(tn
->bearer_list
[bearer_id
]);
181 tipc_disc_add_dest(b
->link_req
);
185 void tipc_bearer_remove_dest(struct net
*net
, u32 bearer_id
, u32 dest
)
187 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
188 struct tipc_bearer
*b
;
191 b
= rcu_dereference_rtnl(tn
->bearer_list
[bearer_id
]);
193 tipc_disc_remove_dest(b
->link_req
);
198 * tipc_enable_bearer - enable bearer with the given name
200 static int tipc_enable_bearer(struct net
*net
, const char *name
,
201 u32 disc_domain
, u32 priority
,
202 struct nlattr
*attr
[])
204 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
205 struct tipc_bearer
*b
;
206 struct tipc_media
*m
;
207 struct tipc_bearer_names b_names
;
209 char addr_string
[16];
216 pr_warn("Bearer <%s> rejected, not supported in standalone mode\n",
220 if (!bearer_name_validate(name
, &b_names
)) {
221 pr_warn("Bearer <%s> rejected, illegal name\n", name
);
224 if (tipc_addr_domain_valid(disc_domain
) &&
225 (disc_domain
!= tn
->own_addr
)) {
226 if (tipc_in_scope(disc_domain
, tn
->own_addr
)) {
227 disc_domain
= tn
->own_addr
& TIPC_CLUSTER_MASK
;
228 res
= 0; /* accept any node in own cluster */
229 } else if (in_own_cluster_exact(net
, disc_domain
))
230 res
= 0; /* accept specified node in own cluster */
233 pr_warn("Bearer <%s> rejected, illegal discovery domain\n",
237 if ((priority
> TIPC_MAX_LINK_PRI
) &&
238 (priority
!= TIPC_MEDIA_LINK_PRI
)) {
239 pr_warn("Bearer <%s> rejected, illegal priority\n", name
);
243 m
= tipc_media_find(b_names
.media_name
);
245 pr_warn("Bearer <%s> rejected, media <%s> not registered\n",
246 name
, b_names
.media_name
);
250 if (priority
== TIPC_MEDIA_LINK_PRI
)
251 priority
= m
->priority
;
254 bearer_id
= MAX_BEARERS
;
256 for (i
= MAX_BEARERS
; i
-- != 0; ) {
257 b
= rtnl_dereference(tn
->bearer_list
[i
]);
262 if (!strcmp(name
, b
->name
)) {
263 pr_warn("Bearer <%s> rejected, already enabled\n",
267 if ((b
->priority
== priority
) &&
268 (++with_this_prio
> 2)) {
269 if (priority
-- == 0) {
270 pr_warn("Bearer <%s> rejected, duplicate priority\n",
274 pr_warn("Bearer <%s> priority adjustment required %u->%u\n",
275 name
, priority
+ 1, priority
);
279 if (bearer_id
>= MAX_BEARERS
) {
280 pr_warn("Bearer <%s> rejected, bearer limit reached (%u)\n",
285 b
= kzalloc(sizeof(*b
), GFP_ATOMIC
);
289 strcpy(b
->name
, name
);
291 res
= m
->enable_media(net
, b
, attr
);
293 pr_warn("Bearer <%s> rejected, enable failure (%d)\n",
298 b
->identity
= bearer_id
;
299 b
->tolerance
= m
->tolerance
;
300 b
->window
= m
->window
;
301 b
->domain
= disc_domain
;
302 b
->net_plane
= bearer_id
+ 'A';
303 b
->priority
= priority
;
305 res
= tipc_disc_create(net
, b
, &b
->bcast_addr
, &skb
);
307 bearer_disable(net
, b
);
308 pr_warn("Bearer <%s> rejected, discovery object creation failed\n",
313 rcu_assign_pointer(tn
->bearer_list
[bearer_id
], b
);
315 tipc_bearer_xmit_skb(net
, bearer_id
, skb
, &b
->bcast_addr
);
316 pr_info("Enabled bearer <%s>, discovery domain %s, priority %u\n",
318 tipc_addr_string_fill(addr_string
, disc_domain
), priority
);
323 * tipc_reset_bearer - Reset all links established over this bearer
325 static int tipc_reset_bearer(struct net
*net
, struct tipc_bearer
*b
)
327 pr_info("Resetting bearer <%s>\n", b
->name
);
328 tipc_node_delete_links(net
, b
->identity
);
329 tipc_disc_reset(net
, b
);
336 * Note: This routine assumes caller holds RTNL lock.
338 static void bearer_disable(struct net
*net
, struct tipc_bearer
*b
)
340 struct tipc_net
*tn
= tipc_net(net
);
341 int bearer_id
= b
->identity
;
343 pr_info("Disabling bearer <%s>\n", b
->name
);
344 b
->media
->disable_media(b
);
345 tipc_node_delete_links(net
, bearer_id
);
346 RCU_INIT_POINTER(b
->media_ptr
, NULL
);
348 tipc_disc_delete(b
->link_req
);
349 RCU_INIT_POINTER(tn
->bearer_list
[bearer_id
], NULL
);
353 int tipc_enable_l2_media(struct net
*net
, struct tipc_bearer
*b
,
354 struct nlattr
*attr
[])
356 struct net_device
*dev
;
357 char *driver_name
= strchr((const char *)b
->name
, ':') + 1;
359 /* Find device with specified name */
360 dev
= dev_get_by_name(net
, driver_name
);
364 /* Associate TIPC bearer with L2 bearer */
365 rcu_assign_pointer(b
->media_ptr
, dev
);
366 memset(&b
->bcast_addr
, 0, sizeof(b
->bcast_addr
));
367 memcpy(b
->bcast_addr
.value
, dev
->broadcast
, b
->media
->hwaddr_len
);
368 b
->bcast_addr
.media_id
= b
->media
->type_id
;
369 b
->bcast_addr
.broadcast
= 1;
371 b
->media
->raw2addr(b
, &b
->addr
, (char *)dev
->dev_addr
);
372 rcu_assign_pointer(dev
->tipc_ptr
, b
);
376 /* tipc_disable_l2_media - detach TIPC bearer from an L2 interface
378 * Mark L2 bearer as inactive so that incoming buffers are thrown away
380 void tipc_disable_l2_media(struct tipc_bearer
*b
)
382 struct net_device
*dev
;
384 dev
= (struct net_device
*)rtnl_dereference(b
->media_ptr
);
385 RCU_INIT_POINTER(dev
->tipc_ptr
, NULL
);
391 * tipc_l2_send_msg - send a TIPC packet out over an L2 interface
392 * @skb: the packet to be sent
393 * @b: the bearer through which the packet is to be sent
394 * @dest: peer destination address
396 int tipc_l2_send_msg(struct net
*net
, struct sk_buff
*skb
,
397 struct tipc_bearer
*b
, struct tipc_media_addr
*dest
)
399 struct net_device
*dev
;
403 dev
= (struct net_device
*)rcu_dereference_rtnl(b
->media_ptr
);
407 /* Send RESET message even if bearer is detached from device */
408 tipc_ptr
= rtnl_dereference(dev
->tipc_ptr
);
409 if (unlikely(!tipc_ptr
&& !msg_is_reset(buf_msg(skb
))))
412 delta
= dev
->hard_header_len
- skb_headroom(skb
);
414 pskb_expand_head(skb
, SKB_DATA_ALIGN(delta
), 0, GFP_ATOMIC
))
417 skb_reset_network_header(skb
);
419 skb
->protocol
= htons(ETH_P_TIPC
);
420 dev_hard_header(skb
, dev
, ETH_P_TIPC
, dest
->value
,
421 dev
->dev_addr
, skb
->len
);
429 int tipc_bearer_mtu(struct net
*net
, u32 bearer_id
)
432 struct tipc_bearer
*b
;
435 b
= rcu_dereference_rtnl(tipc_net(net
)->bearer_list
[bearer_id
]);
442 /* tipc_bearer_xmit_skb - sends buffer to destination over bearer
444 void tipc_bearer_xmit_skb(struct net
*net
, u32 bearer_id
,
446 struct tipc_media_addr
*dest
)
448 struct tipc_net
*tn
= tipc_net(net
);
449 struct tipc_bearer
*b
;
452 b
= rcu_dereference_rtnl(tn
->bearer_list
[bearer_id
]);
454 b
->media
->send_msg(net
, skb
, b
, dest
);
460 /* tipc_bearer_xmit() -send buffer to destination over bearer
462 void tipc_bearer_xmit(struct net
*net
, u32 bearer_id
,
463 struct sk_buff_head
*xmitq
,
464 struct tipc_media_addr
*dst
)
466 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
467 struct tipc_bearer
*b
;
468 struct sk_buff
*skb
, *tmp
;
470 if (skb_queue_empty(xmitq
))
474 b
= rcu_dereference_rtnl(tn
->bearer_list
[bearer_id
]);
476 __skb_queue_purge(xmitq
);
477 skb_queue_walk_safe(xmitq
, skb
, tmp
) {
478 __skb_dequeue(xmitq
);
479 b
->media
->send_msg(net
, skb
, b
, dst
);
484 /* tipc_bearer_bc_xmit() - broadcast buffers to all destinations
486 void tipc_bearer_bc_xmit(struct net
*net
, u32 bearer_id
,
487 struct sk_buff_head
*xmitq
)
489 struct tipc_net
*tn
= tipc_net(net
);
490 int net_id
= tn
->net_id
;
491 struct tipc_bearer
*b
;
492 struct sk_buff
*skb
, *tmp
;
493 struct tipc_msg
*hdr
;
496 b
= rcu_dereference_rtnl(tn
->bearer_list
[bearer_id
]);
498 __skb_queue_purge(xmitq
);
499 skb_queue_walk_safe(xmitq
, skb
, tmp
) {
501 msg_set_non_seq(hdr
, 1);
502 msg_set_mc_netid(hdr
, net_id
);
503 __skb_dequeue(xmitq
);
504 b
->media
->send_msg(net
, skb
, b
, &b
->bcast_addr
);
510 * tipc_l2_rcv_msg - handle incoming TIPC message from an interface
511 * @buf: the received packet
512 * @dev: the net device that the packet was received on
513 * @pt: the packet_type structure which was used to register this handler
514 * @orig_dev: the original receive net device in case the device is a bond
516 * Accept only packets explicitly sent to this node, or broadcast packets;
517 * ignores packets sent using interface multicast, and traffic sent to other
518 * nodes (which can happen if interface is running in promiscuous mode).
520 static int tipc_l2_rcv_msg(struct sk_buff
*skb
, struct net_device
*dev
,
521 struct packet_type
*pt
, struct net_device
*orig_dev
)
523 struct tipc_bearer
*b
;
526 b
= rcu_dereference_rtnl(dev
->tipc_ptr
);
527 if (likely(b
&& (skb
->pkt_type
<= PACKET_BROADCAST
))) {
529 tipc_rcv(dev_net(dev
), skb
, b
);
531 return NET_RX_SUCCESS
;
539 * tipc_l2_device_event - handle device events from network device
540 * @nb: the context of the notification
541 * @evt: the type of event
542 * @ptr: the net device that the event was on
544 * This function is called by the Ethernet driver in case of link
547 static int tipc_l2_device_event(struct notifier_block
*nb
, unsigned long evt
,
550 struct net_device
*dev
= netdev_notifier_info_to_dev(ptr
);
551 struct net
*net
= dev_net(dev
);
552 struct tipc_net
*tn
= tipc_net(net
);
553 struct tipc_bearer
*b
;
556 b
= rtnl_dereference(dev
->tipc_ptr
);
558 for (i
= 0; i
< MAX_BEARERS
; b
= NULL
, i
++) {
559 b
= rtnl_dereference(tn
->bearer_list
[i
]);
560 if (b
&& (b
->media_ptr
== dev
))
571 if (netif_carrier_ok(dev
))
574 rcu_assign_pointer(dev
->tipc_ptr
, b
);
576 case NETDEV_GOING_DOWN
:
577 RCU_INIT_POINTER(dev
->tipc_ptr
, NULL
);
579 tipc_reset_bearer(net
, b
);
581 case NETDEV_CHANGEMTU
:
582 tipc_reset_bearer(net
, b
);
584 case NETDEV_CHANGEADDR
:
585 b
->media
->raw2addr(b
, &b
->addr
,
586 (char *)dev
->dev_addr
);
587 tipc_reset_bearer(net
, b
);
589 case NETDEV_UNREGISTER
:
590 case NETDEV_CHANGENAME
:
591 bearer_disable(dev_net(dev
), b
);
597 static struct packet_type tipc_packet_type __read_mostly
= {
598 .type
= htons(ETH_P_TIPC
),
599 .func
= tipc_l2_rcv_msg
,
602 static struct notifier_block notifier
= {
603 .notifier_call
= tipc_l2_device_event
,
607 int tipc_bearer_setup(void)
611 err
= register_netdevice_notifier(¬ifier
);
614 dev_add_pack(&tipc_packet_type
);
618 void tipc_bearer_cleanup(void)
620 unregister_netdevice_notifier(¬ifier
);
621 dev_remove_pack(&tipc_packet_type
);
624 void tipc_bearer_stop(struct net
*net
)
626 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
627 struct tipc_bearer
*b
;
630 for (i
= 0; i
< MAX_BEARERS
; i
++) {
631 b
= rtnl_dereference(tn
->bearer_list
[i
]);
633 bearer_disable(net
, b
);
634 tn
->bearer_list
[i
] = NULL
;
639 /* Caller should hold rtnl_lock to protect the bearer */
640 static int __tipc_nl_add_bearer(struct tipc_nl_msg
*msg
,
641 struct tipc_bearer
*bearer
, int nlflags
)
644 struct nlattr
*attrs
;
647 hdr
= genlmsg_put(msg
->skb
, msg
->portid
, msg
->seq
, &tipc_genl_family
,
648 nlflags
, TIPC_NL_BEARER_GET
);
652 attrs
= nla_nest_start(msg
->skb
, TIPC_NLA_BEARER
);
656 if (nla_put_string(msg
->skb
, TIPC_NLA_BEARER_NAME
, bearer
->name
))
659 prop
= nla_nest_start(msg
->skb
, TIPC_NLA_BEARER_PROP
);
662 if (nla_put_u32(msg
->skb
, TIPC_NLA_PROP_PRIO
, bearer
->priority
))
664 if (nla_put_u32(msg
->skb
, TIPC_NLA_PROP_TOL
, bearer
->tolerance
))
666 if (nla_put_u32(msg
->skb
, TIPC_NLA_PROP_WIN
, bearer
->window
))
669 nla_nest_end(msg
->skb
, prop
);
670 nla_nest_end(msg
->skb
, attrs
);
671 genlmsg_end(msg
->skb
, hdr
);
676 nla_nest_cancel(msg
->skb
, prop
);
678 nla_nest_cancel(msg
->skb
, attrs
);
680 genlmsg_cancel(msg
->skb
, hdr
);
685 int tipc_nl_bearer_dump(struct sk_buff
*skb
, struct netlink_callback
*cb
)
689 struct tipc_bearer
*bearer
;
690 struct tipc_nl_msg msg
;
691 struct net
*net
= sock_net(skb
->sk
);
692 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
694 if (i
== MAX_BEARERS
)
698 msg
.portid
= NETLINK_CB(cb
->skb
).portid
;
699 msg
.seq
= cb
->nlh
->nlmsg_seq
;
702 for (i
= 0; i
< MAX_BEARERS
; i
++) {
703 bearer
= rtnl_dereference(tn
->bearer_list
[i
]);
707 err
= __tipc_nl_add_bearer(&msg
, bearer
, NLM_F_MULTI
);
717 int tipc_nl_bearer_get(struct sk_buff
*skb
, struct genl_info
*info
)
722 struct tipc_bearer
*bearer
;
723 struct tipc_nl_msg msg
;
724 struct nlattr
*attrs
[TIPC_NLA_BEARER_MAX
+ 1];
725 struct net
*net
= genl_info_net(info
);
727 if (!info
->attrs
[TIPC_NLA_BEARER
])
730 err
= nla_parse_nested(attrs
, TIPC_NLA_BEARER_MAX
,
731 info
->attrs
[TIPC_NLA_BEARER
],
732 tipc_nl_bearer_policy
);
736 if (!attrs
[TIPC_NLA_BEARER_NAME
])
738 name
= nla_data(attrs
[TIPC_NLA_BEARER_NAME
]);
740 rep
= nlmsg_new(NLMSG_GOODSIZE
, GFP_KERNEL
);
745 msg
.portid
= info
->snd_portid
;
746 msg
.seq
= info
->snd_seq
;
749 bearer
= tipc_bearer_find(net
, name
);
755 err
= __tipc_nl_add_bearer(&msg
, bearer
, 0);
760 return genlmsg_reply(rep
, info
);
768 int tipc_nl_bearer_disable(struct sk_buff
*skb
, struct genl_info
*info
)
772 struct tipc_bearer
*bearer
;
773 struct nlattr
*attrs
[TIPC_NLA_BEARER_MAX
+ 1];
774 struct net
*net
= sock_net(skb
->sk
);
776 if (!info
->attrs
[TIPC_NLA_BEARER
])
779 err
= nla_parse_nested(attrs
, TIPC_NLA_BEARER_MAX
,
780 info
->attrs
[TIPC_NLA_BEARER
],
781 tipc_nl_bearer_policy
);
785 if (!attrs
[TIPC_NLA_BEARER_NAME
])
788 name
= nla_data(attrs
[TIPC_NLA_BEARER_NAME
]);
791 bearer
= tipc_bearer_find(net
, name
);
797 bearer_disable(net
, bearer
);
803 int tipc_nl_bearer_enable(struct sk_buff
*skb
, struct genl_info
*info
)
807 struct nlattr
*attrs
[TIPC_NLA_BEARER_MAX
+ 1];
808 struct net
*net
= sock_net(skb
->sk
);
809 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
813 prio
= TIPC_MEDIA_LINK_PRI
;
814 domain
= tn
->own_addr
& TIPC_CLUSTER_MASK
;
816 if (!info
->attrs
[TIPC_NLA_BEARER
])
819 err
= nla_parse_nested(attrs
, TIPC_NLA_BEARER_MAX
,
820 info
->attrs
[TIPC_NLA_BEARER
],
821 tipc_nl_bearer_policy
);
825 if (!attrs
[TIPC_NLA_BEARER_NAME
])
828 bearer
= nla_data(attrs
[TIPC_NLA_BEARER_NAME
]);
830 if (attrs
[TIPC_NLA_BEARER_DOMAIN
])
831 domain
= nla_get_u32(attrs
[TIPC_NLA_BEARER_DOMAIN
]);
833 if (attrs
[TIPC_NLA_BEARER_PROP
]) {
834 struct nlattr
*props
[TIPC_NLA_PROP_MAX
+ 1];
836 err
= tipc_nl_parse_link_prop(attrs
[TIPC_NLA_BEARER_PROP
],
841 if (props
[TIPC_NLA_PROP_PRIO
])
842 prio
= nla_get_u32(props
[TIPC_NLA_PROP_PRIO
]);
846 err
= tipc_enable_bearer(net
, bearer
, domain
, prio
, attrs
);
856 int tipc_nl_bearer_set(struct sk_buff
*skb
, struct genl_info
*info
)
860 struct tipc_bearer
*b
;
861 struct nlattr
*attrs
[TIPC_NLA_BEARER_MAX
+ 1];
862 struct net
*net
= sock_net(skb
->sk
);
864 if (!info
->attrs
[TIPC_NLA_BEARER
])
867 err
= nla_parse_nested(attrs
, TIPC_NLA_BEARER_MAX
,
868 info
->attrs
[TIPC_NLA_BEARER
],
869 tipc_nl_bearer_policy
);
873 if (!attrs
[TIPC_NLA_BEARER_NAME
])
875 name
= nla_data(attrs
[TIPC_NLA_BEARER_NAME
]);
878 b
= tipc_bearer_find(net
, name
);
884 if (attrs
[TIPC_NLA_BEARER_PROP
]) {
885 struct nlattr
*props
[TIPC_NLA_PROP_MAX
+ 1];
887 err
= tipc_nl_parse_link_prop(attrs
[TIPC_NLA_BEARER_PROP
],
894 if (props
[TIPC_NLA_PROP_TOL
])
895 b
->tolerance
= nla_get_u32(props
[TIPC_NLA_PROP_TOL
]);
896 if (props
[TIPC_NLA_PROP_PRIO
])
897 b
->priority
= nla_get_u32(props
[TIPC_NLA_PROP_PRIO
]);
898 if (props
[TIPC_NLA_PROP_WIN
])
899 b
->window
= nla_get_u32(props
[TIPC_NLA_PROP_WIN
]);
906 static int __tipc_nl_add_media(struct tipc_nl_msg
*msg
,
907 struct tipc_media
*media
, int nlflags
)
910 struct nlattr
*attrs
;
913 hdr
= genlmsg_put(msg
->skb
, msg
->portid
, msg
->seq
, &tipc_genl_family
,
914 nlflags
, TIPC_NL_MEDIA_GET
);
918 attrs
= nla_nest_start(msg
->skb
, TIPC_NLA_MEDIA
);
922 if (nla_put_string(msg
->skb
, TIPC_NLA_MEDIA_NAME
, media
->name
))
925 prop
= nla_nest_start(msg
->skb
, TIPC_NLA_MEDIA_PROP
);
928 if (nla_put_u32(msg
->skb
, TIPC_NLA_PROP_PRIO
, media
->priority
))
930 if (nla_put_u32(msg
->skb
, TIPC_NLA_PROP_TOL
, media
->tolerance
))
932 if (nla_put_u32(msg
->skb
, TIPC_NLA_PROP_WIN
, media
->window
))
935 nla_nest_end(msg
->skb
, prop
);
936 nla_nest_end(msg
->skb
, attrs
);
937 genlmsg_end(msg
->skb
, hdr
);
942 nla_nest_cancel(msg
->skb
, prop
);
944 nla_nest_cancel(msg
->skb
, attrs
);
946 genlmsg_cancel(msg
->skb
, hdr
);
951 int tipc_nl_media_dump(struct sk_buff
*skb
, struct netlink_callback
*cb
)
955 struct tipc_nl_msg msg
;
961 msg
.portid
= NETLINK_CB(cb
->skb
).portid
;
962 msg
.seq
= cb
->nlh
->nlmsg_seq
;
965 for (; media_info_array
[i
] != NULL
; i
++) {
966 err
= __tipc_nl_add_media(&msg
, media_info_array
[i
],
977 int tipc_nl_media_get(struct sk_buff
*skb
, struct genl_info
*info
)
981 struct tipc_nl_msg msg
;
982 struct tipc_media
*media
;
984 struct nlattr
*attrs
[TIPC_NLA_BEARER_MAX
+ 1];
986 if (!info
->attrs
[TIPC_NLA_MEDIA
])
989 err
= nla_parse_nested(attrs
, TIPC_NLA_MEDIA_MAX
,
990 info
->attrs
[TIPC_NLA_MEDIA
],
991 tipc_nl_media_policy
);
995 if (!attrs
[TIPC_NLA_MEDIA_NAME
])
997 name
= nla_data(attrs
[TIPC_NLA_MEDIA_NAME
]);
999 rep
= nlmsg_new(NLMSG_GOODSIZE
, GFP_KERNEL
);
1004 msg
.portid
= info
->snd_portid
;
1005 msg
.seq
= info
->snd_seq
;
1008 media
= tipc_media_find(name
);
1014 err
= __tipc_nl_add_media(&msg
, media
, 0);
1019 return genlmsg_reply(rep
, info
);
1027 int tipc_nl_media_set(struct sk_buff
*skb
, struct genl_info
*info
)
1031 struct tipc_media
*m
;
1032 struct nlattr
*attrs
[TIPC_NLA_BEARER_MAX
+ 1];
1034 if (!info
->attrs
[TIPC_NLA_MEDIA
])
1037 err
= nla_parse_nested(attrs
, TIPC_NLA_MEDIA_MAX
,
1038 info
->attrs
[TIPC_NLA_MEDIA
],
1039 tipc_nl_media_policy
);
1041 if (!attrs
[TIPC_NLA_MEDIA_NAME
])
1043 name
= nla_data(attrs
[TIPC_NLA_MEDIA_NAME
]);
1046 m
= tipc_media_find(name
);
1052 if (attrs
[TIPC_NLA_MEDIA_PROP
]) {
1053 struct nlattr
*props
[TIPC_NLA_PROP_MAX
+ 1];
1055 err
= tipc_nl_parse_link_prop(attrs
[TIPC_NLA_MEDIA_PROP
],
1062 if (props
[TIPC_NLA_PROP_TOL
])
1063 m
->tolerance
= nla_get_u32(props
[TIPC_NLA_PROP_TOL
]);
1064 if (props
[TIPC_NLA_PROP_PRIO
])
1065 m
->priority
= nla_get_u32(props
[TIPC_NLA_PROP_PRIO
]);
1066 if (props
[TIPC_NLA_PROP_WIN
])
1067 m
->window
= nla_get_u32(props
[TIPC_NLA_PROP_WIN
]);