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.
44 #define MAX_ADDR_STR 60
46 static struct tipc_media
* const media_info_array
[] = {
48 #ifdef CONFIG_TIPC_MEDIA_IB
51 #ifdef CONFIG_TIPC_MEDIA_UDP
57 static const struct nla_policy
58 tipc_nl_bearer_policy
[TIPC_NLA_BEARER_MAX
+ 1] = {
59 [TIPC_NLA_BEARER_UNSPEC
] = { .type
= NLA_UNSPEC
},
60 [TIPC_NLA_BEARER_NAME
] = {
62 .len
= TIPC_MAX_BEARER_NAME
64 [TIPC_NLA_BEARER_PROP
] = { .type
= NLA_NESTED
},
65 [TIPC_NLA_BEARER_DOMAIN
] = { .type
= NLA_U32
}
68 static const struct nla_policy tipc_nl_media_policy
[TIPC_NLA_MEDIA_MAX
+ 1] = {
69 [TIPC_NLA_MEDIA_UNSPEC
] = { .type
= NLA_UNSPEC
},
70 [TIPC_NLA_MEDIA_NAME
] = { .type
= NLA_STRING
},
71 [TIPC_NLA_MEDIA_PROP
] = { .type
= NLA_NESTED
}
74 static void bearer_disable(struct net
*net
, struct tipc_bearer
*b_ptr
,
78 * tipc_media_find - locates specified media object by name
80 struct tipc_media
*tipc_media_find(const char *name
)
84 for (i
= 0; media_info_array
[i
] != NULL
; i
++) {
85 if (!strcmp(media_info_array
[i
]->name
, name
))
88 return media_info_array
[i
];
92 * media_find_id - locates specified media object by type identifier
94 static struct tipc_media
*media_find_id(u8 type
)
98 for (i
= 0; media_info_array
[i
] != NULL
; i
++) {
99 if (media_info_array
[i
]->type_id
== type
)
102 return media_info_array
[i
];
106 * tipc_media_addr_printf - record media address in print buffer
108 void tipc_media_addr_printf(char *buf
, int len
, struct tipc_media_addr
*a
)
110 char addr_str
[MAX_ADDR_STR
];
111 struct tipc_media
*m_ptr
;
114 m_ptr
= media_find_id(a
->media_id
);
116 if (m_ptr
&& !m_ptr
->addr2str(a
, addr_str
, sizeof(addr_str
)))
117 ret
= scnprintf(buf
, len
, "%s(%s)", m_ptr
->name
, addr_str
);
121 ret
= scnprintf(buf
, len
, "UNKNOWN(%u)", a
->media_id
);
122 for (i
= 0; i
< sizeof(a
->value
); i
++)
123 ret
+= scnprintf(buf
- ret
, len
+ ret
,
124 "-%02x", a
->value
[i
]);
129 * bearer_name_validate - validate & (optionally) deconstruct bearer name
130 * @name: ptr to bearer name string
131 * @name_parts: ptr to area for bearer name components (or NULL if not needed)
133 * Returns 1 if bearer name is valid, otherwise 0.
135 static int bearer_name_validate(const char *name
,
136 struct tipc_bearer_names
*name_parts
)
138 char name_copy
[TIPC_MAX_BEARER_NAME
];
144 /* copy bearer name & ensure length is OK */
145 name_copy
[TIPC_MAX_BEARER_NAME
- 1] = 0;
146 /* need above in case non-Posix strncpy() doesn't pad with nulls */
147 strncpy(name_copy
, name
, TIPC_MAX_BEARER_NAME
);
148 if (name_copy
[TIPC_MAX_BEARER_NAME
- 1] != 0)
151 /* ensure all component parts of bearer name are present */
152 media_name
= name_copy
;
153 if_name
= strchr(media_name
, ':');
157 media_len
= if_name
- media_name
;
158 if_len
= strlen(if_name
) + 1;
160 /* validate component parts of bearer name */
161 if ((media_len
<= 1) || (media_len
> TIPC_MAX_MEDIA_NAME
) ||
162 (if_len
<= 1) || (if_len
> TIPC_MAX_IF_NAME
))
165 /* return bearer name components, if necessary */
167 strcpy(name_parts
->media_name
, media_name
);
168 strcpy(name_parts
->if_name
, if_name
);
174 * tipc_bearer_find - locates bearer object with matching bearer name
176 struct tipc_bearer
*tipc_bearer_find(struct net
*net
, const char *name
)
178 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
179 struct tipc_bearer
*b_ptr
;
182 for (i
= 0; i
< MAX_BEARERS
; i
++) {
183 b_ptr
= rtnl_dereference(tn
->bearer_list
[i
]);
184 if (b_ptr
&& (!strcmp(b_ptr
->name
, name
)))
190 void tipc_bearer_add_dest(struct net
*net
, u32 bearer_id
, u32 dest
)
192 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
193 struct tipc_bearer
*b_ptr
;
196 b_ptr
= rcu_dereference_rtnl(tn
->bearer_list
[bearer_id
]);
198 tipc_bcbearer_sort(net
, &b_ptr
->nodes
, dest
, true);
199 tipc_disc_add_dest(b_ptr
->link_req
);
204 void tipc_bearer_remove_dest(struct net
*net
, u32 bearer_id
, u32 dest
)
206 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
207 struct tipc_bearer
*b_ptr
;
210 b_ptr
= rcu_dereference_rtnl(tn
->bearer_list
[bearer_id
]);
212 tipc_bcbearer_sort(net
, &b_ptr
->nodes
, dest
, false);
213 tipc_disc_remove_dest(b_ptr
->link_req
);
219 * tipc_enable_bearer - enable bearer with the given name
221 static int tipc_enable_bearer(struct net
*net
, const char *name
,
222 u32 disc_domain
, u32 priority
,
223 struct nlattr
*attr
[])
225 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
226 struct tipc_bearer
*b_ptr
;
227 struct tipc_media
*m_ptr
;
228 struct tipc_bearer_names b_names
;
229 char addr_string
[16];
236 pr_warn("Bearer <%s> rejected, not supported in standalone mode\n",
240 if (!bearer_name_validate(name
, &b_names
)) {
241 pr_warn("Bearer <%s> rejected, illegal name\n", name
);
244 if (tipc_addr_domain_valid(disc_domain
) &&
245 (disc_domain
!= tn
->own_addr
)) {
246 if (tipc_in_scope(disc_domain
, tn
->own_addr
)) {
247 disc_domain
= tn
->own_addr
& TIPC_CLUSTER_MASK
;
248 res
= 0; /* accept any node in own cluster */
249 } else if (in_own_cluster_exact(net
, disc_domain
))
250 res
= 0; /* accept specified node in own cluster */
253 pr_warn("Bearer <%s> rejected, illegal discovery domain\n",
257 if ((priority
> TIPC_MAX_LINK_PRI
) &&
258 (priority
!= TIPC_MEDIA_LINK_PRI
)) {
259 pr_warn("Bearer <%s> rejected, illegal priority\n", name
);
263 m_ptr
= tipc_media_find(b_names
.media_name
);
265 pr_warn("Bearer <%s> rejected, media <%s> not registered\n",
266 name
, b_names
.media_name
);
270 if (priority
== TIPC_MEDIA_LINK_PRI
)
271 priority
= m_ptr
->priority
;
274 bearer_id
= MAX_BEARERS
;
276 for (i
= MAX_BEARERS
; i
-- != 0; ) {
277 b_ptr
= rtnl_dereference(tn
->bearer_list
[i
]);
282 if (!strcmp(name
, b_ptr
->name
)) {
283 pr_warn("Bearer <%s> rejected, already enabled\n",
287 if ((b_ptr
->priority
== priority
) &&
288 (++with_this_prio
> 2)) {
289 if (priority
-- == 0) {
290 pr_warn("Bearer <%s> rejected, duplicate priority\n",
294 pr_warn("Bearer <%s> priority adjustment required %u->%u\n",
295 name
, priority
+ 1, priority
);
299 if (bearer_id
>= MAX_BEARERS
) {
300 pr_warn("Bearer <%s> rejected, bearer limit reached (%u)\n",
305 b_ptr
= kzalloc(sizeof(*b_ptr
), GFP_ATOMIC
);
309 strcpy(b_ptr
->name
, name
);
310 b_ptr
->media
= m_ptr
;
311 res
= m_ptr
->enable_media(net
, b_ptr
, attr
);
313 pr_warn("Bearer <%s> rejected, enable failure (%d)\n",
318 b_ptr
->identity
= bearer_id
;
319 b_ptr
->tolerance
= m_ptr
->tolerance
;
320 b_ptr
->window
= m_ptr
->window
;
321 b_ptr
->domain
= disc_domain
;
322 b_ptr
->net_plane
= bearer_id
+ 'A';
323 b_ptr
->priority
= priority
;
325 res
= tipc_disc_create(net
, b_ptr
, &b_ptr
->bcast_addr
);
327 bearer_disable(net
, b_ptr
, false);
328 pr_warn("Bearer <%s> rejected, discovery object creation failed\n",
333 rcu_assign_pointer(tn
->bearer_list
[bearer_id
], b_ptr
);
335 pr_info("Enabled bearer <%s>, discovery domain %s, priority %u\n",
337 tipc_addr_string_fill(addr_string
, disc_domain
), priority
);
342 * tipc_reset_bearer - Reset all links established over this bearer
344 static int tipc_reset_bearer(struct net
*net
, struct tipc_bearer
*b_ptr
)
346 pr_info("Resetting bearer <%s>\n", b_ptr
->name
);
347 tipc_link_reset_list(net
, b_ptr
->identity
);
348 tipc_disc_reset(net
, b_ptr
);
355 * Note: This routine assumes caller holds RTNL lock.
357 static void bearer_disable(struct net
*net
, struct tipc_bearer
*b_ptr
,
360 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
363 pr_info("Disabling bearer <%s>\n", b_ptr
->name
);
364 b_ptr
->media
->disable_media(b_ptr
);
366 tipc_link_delete_list(net
, b_ptr
->identity
, shutting_down
);
368 tipc_disc_delete(b_ptr
->link_req
);
370 for (i
= 0; i
< MAX_BEARERS
; i
++) {
371 if (b_ptr
== rtnl_dereference(tn
->bearer_list
[i
])) {
372 RCU_INIT_POINTER(tn
->bearer_list
[i
], NULL
);
376 kfree_rcu(b_ptr
, rcu
);
379 int tipc_enable_l2_media(struct net
*net
, struct tipc_bearer
*b
,
380 struct nlattr
*attr
[])
382 struct net_device
*dev
;
383 char *driver_name
= strchr((const char *)b
->name
, ':') + 1;
385 /* Find device with specified name */
386 dev
= dev_get_by_name(net
, driver_name
);
390 /* Associate TIPC bearer with L2 bearer */
391 rcu_assign_pointer(b
->media_ptr
, dev
);
392 memset(&b
->bcast_addr
, 0, sizeof(b
->bcast_addr
));
393 memcpy(b
->bcast_addr
.value
, dev
->broadcast
, b
->media
->hwaddr_len
);
394 b
->bcast_addr
.media_id
= b
->media
->type_id
;
395 b
->bcast_addr
.broadcast
= 1;
397 b
->media
->raw2addr(b
, &b
->addr
, (char *)dev
->dev_addr
);
398 rcu_assign_pointer(dev
->tipc_ptr
, b
);
402 /* tipc_disable_l2_media - detach TIPC bearer from an L2 interface
404 * Mark L2 bearer as inactive so that incoming buffers are thrown away,
405 * then get worker thread to complete bearer cleanup. (Can't do cleanup
406 * here because cleanup code needs to sleep and caller holds spinlocks.)
408 void tipc_disable_l2_media(struct tipc_bearer
*b
)
410 struct net_device
*dev
;
412 dev
= (struct net_device
*)rtnl_dereference(b
->media_ptr
);
413 RCU_INIT_POINTER(b
->media_ptr
, NULL
);
414 RCU_INIT_POINTER(dev
->tipc_ptr
, NULL
);
420 * tipc_l2_send_msg - send a TIPC packet out over an L2 interface
421 * @buf: the packet to be sent
422 * @b_ptr: the bearer through which the packet is to be sent
423 * @dest: peer destination address
425 int tipc_l2_send_msg(struct net
*net
, struct sk_buff
*buf
,
426 struct tipc_bearer
*b
, struct tipc_media_addr
*dest
)
428 struct sk_buff
*clone
;
429 struct net_device
*dev
;
432 dev
= (struct net_device
*)rcu_dereference_rtnl(b
->media_ptr
);
436 clone
= skb_clone(buf
, GFP_ATOMIC
);
440 delta
= dev
->hard_header_len
- skb_headroom(buf
);
442 pskb_expand_head(clone
, SKB_DATA_ALIGN(delta
), 0, GFP_ATOMIC
)) {
447 skb_reset_network_header(clone
);
449 clone
->protocol
= htons(ETH_P_TIPC
);
450 dev_hard_header(clone
, dev
, ETH_P_TIPC
, dest
->value
,
451 dev
->dev_addr
, clone
->len
);
452 dev_queue_xmit(clone
);
456 /* tipc_bearer_send- sends buffer to destination over bearer
459 * The media send routine must not alter the buffer being passed in
460 * as it may be needed for later retransmission!
462 void tipc_bearer_send(struct net
*net
, u32 bearer_id
, struct sk_buff
*buf
,
463 struct tipc_media_addr
*dest
)
465 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
466 struct tipc_bearer
*b_ptr
;
469 b_ptr
= rcu_dereference_rtnl(tn
->bearer_list
[bearer_id
]);
471 b_ptr
->media
->send_msg(net
, buf
, b_ptr
, dest
);
476 * tipc_l2_rcv_msg - handle incoming TIPC message from an interface
477 * @buf: the received packet
478 * @dev: the net device that the packet was received on
479 * @pt: the packet_type structure which was used to register this handler
480 * @orig_dev: the original receive net device in case the device is a bond
482 * Accept only packets explicitly sent to this node, or broadcast packets;
483 * ignores packets sent using interface multicast, and traffic sent to other
484 * nodes (which can happen if interface is running in promiscuous mode).
486 static int tipc_l2_rcv_msg(struct sk_buff
*buf
, struct net_device
*dev
,
487 struct packet_type
*pt
, struct net_device
*orig_dev
)
489 struct tipc_bearer
*b_ptr
;
492 b_ptr
= rcu_dereference_rtnl(dev
->tipc_ptr
);
494 if (likely(buf
->pkt_type
<= PACKET_BROADCAST
)) {
496 tipc_rcv(dev_net(dev
), buf
, b_ptr
);
498 return NET_RX_SUCCESS
;
508 * tipc_l2_device_event - handle device events from network device
509 * @nb: the context of the notification
510 * @evt: the type of event
511 * @ptr: the net device that the event was on
513 * This function is called by the Ethernet driver in case of link
516 static int tipc_l2_device_event(struct notifier_block
*nb
, unsigned long evt
,
519 struct net_device
*dev
= netdev_notifier_info_to_dev(ptr
);
520 struct net
*net
= dev_net(dev
);
521 struct tipc_bearer
*b_ptr
;
523 b_ptr
= rtnl_dereference(dev
->tipc_ptr
);
527 b_ptr
->mtu
= dev
->mtu
;
531 if (netif_carrier_ok(dev
))
534 case NETDEV_CHANGEMTU
:
535 tipc_reset_bearer(net
, b_ptr
);
537 case NETDEV_CHANGEADDR
:
538 b_ptr
->media
->raw2addr(b_ptr
, &b_ptr
->addr
,
539 (char *)dev
->dev_addr
);
540 tipc_reset_bearer(net
, b_ptr
);
542 case NETDEV_UNREGISTER
:
543 case NETDEV_CHANGENAME
:
544 bearer_disable(dev_net(dev
), b_ptr
, false);
550 static struct packet_type tipc_packet_type __read_mostly
= {
551 .type
= htons(ETH_P_TIPC
),
552 .func
= tipc_l2_rcv_msg
,
555 static struct notifier_block notifier
= {
556 .notifier_call
= tipc_l2_device_event
,
560 int tipc_bearer_setup(void)
564 err
= register_netdevice_notifier(¬ifier
);
567 dev_add_pack(&tipc_packet_type
);
571 void tipc_bearer_cleanup(void)
573 unregister_netdevice_notifier(¬ifier
);
574 dev_remove_pack(&tipc_packet_type
);
577 void tipc_bearer_stop(struct net
*net
)
579 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
580 struct tipc_bearer
*b_ptr
;
583 for (i
= 0; i
< MAX_BEARERS
; i
++) {
584 b_ptr
= rtnl_dereference(tn
->bearer_list
[i
]);
586 bearer_disable(net
, b_ptr
, true);
587 tn
->bearer_list
[i
] = NULL
;
592 /* Caller should hold rtnl_lock to protect the bearer */
593 static int __tipc_nl_add_bearer(struct tipc_nl_msg
*msg
,
594 struct tipc_bearer
*bearer
)
597 struct nlattr
*attrs
;
600 hdr
= genlmsg_put(msg
->skb
, msg
->portid
, msg
->seq
, &tipc_genl_family
,
601 NLM_F_MULTI
, TIPC_NL_BEARER_GET
);
605 attrs
= nla_nest_start(msg
->skb
, TIPC_NLA_BEARER
);
609 if (nla_put_string(msg
->skb
, TIPC_NLA_BEARER_NAME
, bearer
->name
))
612 prop
= nla_nest_start(msg
->skb
, TIPC_NLA_BEARER_PROP
);
615 if (nla_put_u32(msg
->skb
, TIPC_NLA_PROP_PRIO
, bearer
->priority
))
617 if (nla_put_u32(msg
->skb
, TIPC_NLA_PROP_TOL
, bearer
->tolerance
))
619 if (nla_put_u32(msg
->skb
, TIPC_NLA_PROP_WIN
, bearer
->window
))
622 nla_nest_end(msg
->skb
, prop
);
623 nla_nest_end(msg
->skb
, attrs
);
624 genlmsg_end(msg
->skb
, hdr
);
629 nla_nest_cancel(msg
->skb
, prop
);
631 nla_nest_cancel(msg
->skb
, attrs
);
633 genlmsg_cancel(msg
->skb
, hdr
);
638 int tipc_nl_bearer_dump(struct sk_buff
*skb
, struct netlink_callback
*cb
)
642 struct tipc_bearer
*bearer
;
643 struct tipc_nl_msg msg
;
644 struct net
*net
= sock_net(skb
->sk
);
645 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
647 if (i
== MAX_BEARERS
)
651 msg
.portid
= NETLINK_CB(cb
->skb
).portid
;
652 msg
.seq
= cb
->nlh
->nlmsg_seq
;
655 for (i
= 0; i
< MAX_BEARERS
; i
++) {
656 bearer
= rtnl_dereference(tn
->bearer_list
[i
]);
660 err
= __tipc_nl_add_bearer(&msg
, bearer
);
670 int tipc_nl_bearer_get(struct sk_buff
*skb
, struct genl_info
*info
)
675 struct tipc_bearer
*bearer
;
676 struct tipc_nl_msg msg
;
677 struct nlattr
*attrs
[TIPC_NLA_BEARER_MAX
+ 1];
678 struct net
*net
= genl_info_net(info
);
680 if (!info
->attrs
[TIPC_NLA_BEARER
])
683 err
= nla_parse_nested(attrs
, TIPC_NLA_BEARER_MAX
,
684 info
->attrs
[TIPC_NLA_BEARER
],
685 tipc_nl_bearer_policy
);
689 if (!attrs
[TIPC_NLA_BEARER_NAME
])
691 name
= nla_data(attrs
[TIPC_NLA_BEARER_NAME
]);
693 rep
= nlmsg_new(NLMSG_GOODSIZE
, GFP_KERNEL
);
698 msg
.portid
= info
->snd_portid
;
699 msg
.seq
= info
->snd_seq
;
702 bearer
= tipc_bearer_find(net
, name
);
708 err
= __tipc_nl_add_bearer(&msg
, bearer
);
713 return genlmsg_reply(rep
, info
);
721 int tipc_nl_bearer_disable(struct sk_buff
*skb
, struct genl_info
*info
)
725 struct tipc_bearer
*bearer
;
726 struct nlattr
*attrs
[TIPC_NLA_BEARER_MAX
+ 1];
727 struct net
*net
= sock_net(skb
->sk
);
729 if (!info
->attrs
[TIPC_NLA_BEARER
])
732 err
= nla_parse_nested(attrs
, TIPC_NLA_BEARER_MAX
,
733 info
->attrs
[TIPC_NLA_BEARER
],
734 tipc_nl_bearer_policy
);
738 if (!attrs
[TIPC_NLA_BEARER_NAME
])
741 name
= nla_data(attrs
[TIPC_NLA_BEARER_NAME
]);
744 bearer
= tipc_bearer_find(net
, name
);
750 bearer_disable(net
, bearer
, false);
756 int tipc_nl_bearer_enable(struct sk_buff
*skb
, struct genl_info
*info
)
760 struct nlattr
*attrs
[TIPC_NLA_BEARER_MAX
+ 1];
761 struct net
*net
= sock_net(skb
->sk
);
762 struct tipc_net
*tn
= net_generic(net
, tipc_net_id
);
766 prio
= TIPC_MEDIA_LINK_PRI
;
767 domain
= tn
->own_addr
& TIPC_CLUSTER_MASK
;
769 if (!info
->attrs
[TIPC_NLA_BEARER
])
772 err
= nla_parse_nested(attrs
, TIPC_NLA_BEARER_MAX
,
773 info
->attrs
[TIPC_NLA_BEARER
],
774 tipc_nl_bearer_policy
);
778 if (!attrs
[TIPC_NLA_BEARER_NAME
])
781 bearer
= nla_data(attrs
[TIPC_NLA_BEARER_NAME
]);
783 if (attrs
[TIPC_NLA_BEARER_DOMAIN
])
784 domain
= nla_get_u32(attrs
[TIPC_NLA_BEARER_DOMAIN
]);
786 if (attrs
[TIPC_NLA_BEARER_PROP
]) {
787 struct nlattr
*props
[TIPC_NLA_PROP_MAX
+ 1];
789 err
= tipc_nl_parse_link_prop(attrs
[TIPC_NLA_BEARER_PROP
],
794 if (props
[TIPC_NLA_PROP_PRIO
])
795 prio
= nla_get_u32(props
[TIPC_NLA_PROP_PRIO
]);
799 err
= tipc_enable_bearer(net
, bearer
, domain
, prio
, attrs
);
809 int tipc_nl_bearer_set(struct sk_buff
*skb
, struct genl_info
*info
)
813 struct tipc_bearer
*b
;
814 struct nlattr
*attrs
[TIPC_NLA_BEARER_MAX
+ 1];
815 struct net
*net
= genl_info_net(info
);
817 if (!info
->attrs
[TIPC_NLA_BEARER
])
820 err
= nla_parse_nested(attrs
, TIPC_NLA_BEARER_MAX
,
821 info
->attrs
[TIPC_NLA_BEARER
],
822 tipc_nl_bearer_policy
);
826 if (!attrs
[TIPC_NLA_BEARER_NAME
])
828 name
= nla_data(attrs
[TIPC_NLA_BEARER_NAME
]);
831 b
= tipc_bearer_find(net
, name
);
837 if (attrs
[TIPC_NLA_BEARER_PROP
]) {
838 struct nlattr
*props
[TIPC_NLA_PROP_MAX
+ 1];
840 err
= tipc_nl_parse_link_prop(attrs
[TIPC_NLA_BEARER_PROP
],
847 if (props
[TIPC_NLA_PROP_TOL
])
848 b
->tolerance
= nla_get_u32(props
[TIPC_NLA_PROP_TOL
]);
849 if (props
[TIPC_NLA_PROP_PRIO
])
850 b
->priority
= nla_get_u32(props
[TIPC_NLA_PROP_PRIO
]);
851 if (props
[TIPC_NLA_PROP_WIN
])
852 b
->window
= nla_get_u32(props
[TIPC_NLA_PROP_WIN
]);
859 static int __tipc_nl_add_media(struct tipc_nl_msg
*msg
,
860 struct tipc_media
*media
)
863 struct nlattr
*attrs
;
866 hdr
= genlmsg_put(msg
->skb
, msg
->portid
, msg
->seq
, &tipc_genl_family
,
867 NLM_F_MULTI
, TIPC_NL_MEDIA_GET
);
871 attrs
= nla_nest_start(msg
->skb
, TIPC_NLA_MEDIA
);
875 if (nla_put_string(msg
->skb
, TIPC_NLA_MEDIA_NAME
, media
->name
))
878 prop
= nla_nest_start(msg
->skb
, TIPC_NLA_MEDIA_PROP
);
881 if (nla_put_u32(msg
->skb
, TIPC_NLA_PROP_PRIO
, media
->priority
))
883 if (nla_put_u32(msg
->skb
, TIPC_NLA_PROP_TOL
, media
->tolerance
))
885 if (nla_put_u32(msg
->skb
, TIPC_NLA_PROP_WIN
, media
->window
))
888 nla_nest_end(msg
->skb
, prop
);
889 nla_nest_end(msg
->skb
, attrs
);
890 genlmsg_end(msg
->skb
, hdr
);
895 nla_nest_cancel(msg
->skb
, prop
);
897 nla_nest_cancel(msg
->skb
, attrs
);
899 genlmsg_cancel(msg
->skb
, hdr
);
904 int tipc_nl_media_dump(struct sk_buff
*skb
, struct netlink_callback
*cb
)
908 struct tipc_nl_msg msg
;
914 msg
.portid
= NETLINK_CB(cb
->skb
).portid
;
915 msg
.seq
= cb
->nlh
->nlmsg_seq
;
918 for (; media_info_array
[i
] != NULL
; i
++) {
919 err
= __tipc_nl_add_media(&msg
, media_info_array
[i
]);
929 int tipc_nl_media_get(struct sk_buff
*skb
, struct genl_info
*info
)
933 struct tipc_nl_msg msg
;
934 struct tipc_media
*media
;
936 struct nlattr
*attrs
[TIPC_NLA_BEARER_MAX
+ 1];
938 if (!info
->attrs
[TIPC_NLA_MEDIA
])
941 err
= nla_parse_nested(attrs
, TIPC_NLA_MEDIA_MAX
,
942 info
->attrs
[TIPC_NLA_MEDIA
],
943 tipc_nl_media_policy
);
947 if (!attrs
[TIPC_NLA_MEDIA_NAME
])
949 name
= nla_data(attrs
[TIPC_NLA_MEDIA_NAME
]);
951 rep
= nlmsg_new(NLMSG_GOODSIZE
, GFP_KERNEL
);
956 msg
.portid
= info
->snd_portid
;
957 msg
.seq
= info
->snd_seq
;
960 media
= tipc_media_find(name
);
966 err
= __tipc_nl_add_media(&msg
, media
);
971 return genlmsg_reply(rep
, info
);
979 int tipc_nl_media_set(struct sk_buff
*skb
, struct genl_info
*info
)
983 struct tipc_media
*m
;
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
);
993 if (!attrs
[TIPC_NLA_MEDIA_NAME
])
995 name
= nla_data(attrs
[TIPC_NLA_MEDIA_NAME
]);
998 m
= tipc_media_find(name
);
1004 if (attrs
[TIPC_NLA_MEDIA_PROP
]) {
1005 struct nlattr
*props
[TIPC_NLA_PROP_MAX
+ 1];
1007 err
= tipc_nl_parse_link_prop(attrs
[TIPC_NLA_MEDIA_PROP
],
1014 if (props
[TIPC_NLA_PROP_TOL
])
1015 m
->tolerance
= nla_get_u32(props
[TIPC_NLA_PROP_TOL
]);
1016 if (props
[TIPC_NLA_PROP_PRIO
])
1017 m
->priority
= nla_get_u32(props
[TIPC_NLA_PROP_PRIO
]);
1018 if (props
[TIPC_NLA_PROP_WIN
])
1019 m
->window
= nla_get_u32(props
[TIPC_NLA_PROP_WIN
]);