We reduce and localize the usage of the tipc_sub_xx() macros by adding a
corresponding member, with fields set in host-endian format, to struct
tipc_subscription.
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Acked-by: NYing Xue <ying.xue@windriver.com>
Acked-by: NHoang Le <hoang.h.le@dektech.com.au>
Acked-by: NTung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The function tipc_report_overlap() is called from the binding table
with numerous parameters taken from an instance of struct publication.
A closer look reveals that it always is safe to send along a pointer
to the instance itself, and hence reduce the call signature. We do
that in this commit.
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Acked-by: NYing Xue <ying.xue@windriver.com>
Acked-by: NHoang Le <hoang.h.le@dektech.com.au>
Acked-by: NTung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We reduce the signature of tipc_find_service() and
tipc_create_service(). The reason for doing this might not
be obvious, but we plan to let struct tipc_uaddr contain
information that is relevant for these functions in a later
commit.
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Acked-by: NYing Xue <ying.xue@windriver.com>
Acked-by: NHoang Le <hoang.h.le@dektech.com.au>
Acked-by: NTung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We simplify the signatures of the functions tipc_service_create_range()
and tipc_service_find_range().
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Acked-by: NYing Xue <ying.xue@windriver.com>
Acked-by: NHoang Le <hoang.h.le@dektech.com.au>
Acked-by: NTung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We reduce the signature of tipc_nametbl_lookup_group() by using a
struct tipc_uaddr pointer. This entails a couple of minor changes in the
functions tipc_send_group_mcast/anycast/unicast/bcast() in socket.c
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Acked-by: NYing Xue <ying.xue@windriver.com>
Acked-by: NHoang Le <hoang.h.le@dektech.com.au>
Acked-by: NTung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We follow up the preceding commits by reducing the signature of
the function tipc_nametbl_lookup_mcast_nodes().
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Acked-by: NYing Xue <ying.xue@windriver.com>
Acked-by: NHoang Le <hoang.h.le@dektech.com.au>
Acked-by: NTung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We reduce the signature of this function according to the same
principle as the preceding commits.
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Acked-by: NYing Xue <ying.xue@windriver.com>
Acked-by: NHoang Le <hoang.h.le@dektech.com.au>
Acked-by: NTung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We simplify the signature if function tipc_nametbl_lookup_anycast(),
using address structures instead of discrete integers.

This also makes it possible to make some improvements to the functions
__tipc_sendmsg() in socket.c and tipc_msg_lookup_dest() in msg.c.
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Acked-by: NYing Xue <ying.xue@windriver.com>
Acked-by: NHoang Le <hoang.h.le@dektech.com.au>
Acked-by: NTung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

The binding table provides four different lookup functions, which
purpose is not obvious neither by their names nor by the (lack of)
descriptions.

We now give these functions names that better match their purposes,
and improve the comments that describe what they are doing.
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Acked-by: NYing Xue <ying.xue@windriver.com>
Acked-by: NHoang Le <hoang.h.le@dektech.com.au>
Acked-by: NTung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Following the principles of the preceding commits, we reduce
the number of parameters passed along in tipc_sk_withdraw(),
tipc_nametbl_withdraw() and associated functions.
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Acked-by: NYing Xue <ying.xue@windriver.com>
Acked-by: NHoang Le <hoang.h.le@dektech.com.au>
Acked-by: NTung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We simplify the call signatures for tipc_nametbl_insert_publ() and
tipc_publ_create() so that fewer parameters are passed around.
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Acked-by: NYing Xue <ying.xue@windriver.com>
Acked-by: NHoang Le <hoang.h.le@dektech.com.au>
Acked-by: NTung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Using the new address structure tipc_uaddr, we simplify the signature
of function tipc_sk_publish() and tipc_namtbl_publish() so that fewer
parameters need to be passed around.
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Acked-by: NYing Xue <ying.xue@windriver.com>
Acked-by: NHoang Le <hoang.h.le@dektech.com.au>
Acked-by: NTung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We introduce a simplified version of struct sockaddr_tipc, using
anonymous unions and structures. Apart from being nicer to work with,
this struct will come in handy when we in a later commit add another
address type.
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Acked-by: NYing Xue <ying.xue@windriver.com>
Acked-by: NHoang Le <hoang.h.le@dektech.com.au>
Acked-by: NTung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We instantiate struct publication in tipc_nametbl_insert_publ()
instead of as currently in tipc_service_insert_publ(). This has the
advantage that we can pass a pointer to the publication struct to
the next call levels, instead of the numerous individual parameters
we pass on now. It also gives us a location to keep the contents of
the additional fields we will introduce in a later commit.
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Acked-by: NYing Xue <ying.xue@windriver.com>
Acked-by: NHoang Le <hoang.h.le@dektech.com.au>
Acked-by: NTung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

In a future commit we will introduce more members to struct publication.
In order to keep this structure comprehensible we now group some of
its current fields into the sub-structures where they really belong,
- A struct tipc_service_range for the functional address the publication
  is representing.
- A struct tipc_socket_addr for the socket bound to that service range.

We also rename the stack variable 'publ' to just 'p' in a few places.
This is just as easy to understand in the given context, and keeps the
number of wrapped code lines to a minimum.

There are no functional changes in this commit.
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Acked-by: NYing Xue <ying.xue@windriver.com>
Acked-by: NHoang Le <hoang.h.le@dektech.com.au>
Acked-by: NTung Nguyen <tung.q.nguyen@dektech.com.au>
Acked-by: NXin Long <lucien.xin@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

This patch fixes the following warning from sparse:

net/tipc/monitor.c:263:35: warning: incorrect type in assignment (different base types)
net/tipc/monitor.c:263:35:    expected unsigned int
net/tipc/monitor.c:263:35:    got restricted __be32 [usertype]
[...]
net/tipc/node.c:374:13: warning: context imbalance in 'tipc_node_read_lock' - wrong count at exit
net/tipc/node.c:379:13: warning: context imbalance in 'tipc_node_read_unlock' - unexpected unlock
net/tipc/node.c:384:13: warning: context imbalance in 'tipc_node_write_lock' - wrong count at exit
net/tipc/node.c:389:13: warning: context imbalance in 'tipc_node_write_unlock_fast' - unexpected unlock
net/tipc/node.c:404:17: warning: context imbalance in 'tipc_node_write_unlock' - unexpected unlock
[...]
net/tipc/crypto.c:1201:9: warning: incorrect type in initializer (different address spaces)
net/tipc/crypto.c:1201:9:    expected struct tipc_aead [noderef] __rcu *__tmp
net/tipc/crypto.c:1201:9:    got struct tipc_aead *
[...]
Acked-by: NJon Maloy <jmaloy@redhat.com>
Signed-off-by: NHoang Huu Le <hoang.h.le@dektech.com.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

(struct tipc_link_info)->dest is in network order (__be32), so we must
convert the value to network order before assigning. The problem detected
by sparse:

net/tipc/netlink_compat.c:699:24: warning: incorrect type in assignment (different base types)
net/tipc/netlink_compat.c:699:24:    expected restricted __be32 [usertype] dest
net/tipc/netlink_compat.c:699:24:    got int
Acked-by: NJon Maloy <jmaloy@redhat.com>
Signed-off-by: NHoang Le <hoang.h.le@dektech.com.au>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Remove a duplicate code checking for header size in tipc_msg_create() as
it's already being done in tipc_msg_init().
Acked-by: NJon Maloy <jmaloy@redhat.com>
Signed-off-by: NHoang Huu Le <hoang.h.le@dektech.com.au>
Link: https://lore.kernel.org/r/20210127025123.6390-1-hoang.h.le@dektech.com.auSigned-off-by: NJakub Kicinski <kuba@kernel.org>

A function has a different name between their prototype
and its kernel-doc markup:

	../net/tipc/link.c:2551: warning: expecting prototype for link_reset_stats(). Prototype was for tipc_link_reset_stats() instead
	../net/tipc/node.c:1678: warning: expecting prototype for is the general link level function for message sending(). Prototype was for tipc_node_xmit() instead
Signed-off-by: NMauro Carvalho Chehab <mchehab+huawei@kernel.org>
Acked-by: NJon Maloy <jmaloy@redhat.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

The buffer list can have zero skb as following path:
tipc_named_node_up()->tipc_node_xmit()->tipc_link_xmit(), so
we need to check the list before casting an &sk_buff.

Fault report:
 [] tipc: Bulk publication failure
 [] general protection fault, probably for non-canonical [#1] PREEMPT [...]
 [] KASAN: null-ptr-deref in range [0x00000000000000c8-0x00000000000000cf]
 [] CPU: 0 PID: 0 Comm: swapper/0 Kdump: loaded Not tainted 5.10.0-rc4+ #2
 [] Hardware name: Bochs ..., BIOS Bochs 01/01/2011
 [] RIP: 0010:tipc_link_xmit+0xc1/0x2180
 [] Code: 24 b8 00 00 00 00 4d 39 ec 4c 0f 44 e8 e8 d7 0a 10 f9 48 [...]
 [] RSP: 0018:ffffc90000006ea0 EFLAGS: 00010202
 [] RAX: dffffc0000000000 RBX: ffff8880224da000 RCX: 1ffff11003d3cc0d
 [] RDX: 0000000000000019 RSI: ffffffff886007b9 RDI: 00000000000000c8
 [] RBP: ffffc90000007018 R08: 0000000000000001 R09: fffff52000000ded
 [] R10: 0000000000000003 R11: fffff52000000dec R12: ffffc90000007148
 [] R13: 0000000000000000 R14: 0000000000000000 R15: ffffc90000007018
 [] FS:  0000000000000000(0000) GS:ffff888037400000(0000) knlGS:000[...]
 [] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
 [] CR2: 00007fffd2db5000 CR3: 000000002b08f000 CR4: 00000000000006f0

Fixes: af9b028e ("tipc: make media xmit call outside node spinlock context")
Acked-by: NJon Maloy <jmaloy@redhat.com>
Signed-off-by: NHoang Le <hoang.h.le@dektech.com.au>
Link: https://lore.kernel.org/r/20210108071337.3598-1-hoang.h.le@dektech.com.auSigned-off-by: NJakub Kicinski <kuba@kernel.org>

Use the existing offsetof() macro instead of duplicating code.
Signed-off-by: NZheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

When we initialize nlmsghdr with no payload inside tipc_nl_compat_dumpit()
the parsing function returns -EINVAL. We fix it by making the parsing call
conditional.
Acked-by: NJon Maloy <jmaloy@redhat.com>
Signed-off-by: NHoang Le <hoang.h.le@dektech.com.au>
Link: https://lore.kernel.org/r/20201215033151.76139-1-hoang.h.le@dektech.com.auSigned-off-by: NJakub Kicinski <kuba@kernel.org>

`tipc_node_apply_property` does a null check on a `tipc_link_entry`
pointer but also accesses the same pointer out of the null check block.

This triggers a warning on Coverity Static Analyzer because we're
implying that `e->link` can BE null.

Move "Update MTU for node link entry" line into if block to make sure
that we're not in a state that `e->link` is null.
Signed-off-by: NCengiz Can <cengiz@kernel.wtf>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

We add the support to remove a specific node down with 128bit
node identifier, as an alternative to legacy 32-bit node address.

example:
$tipc peer remove identiy <1001002|16777777>
Acked-by: NJon Maloy <jmaloy@redhat.com>
Signed-off-by: NHoang Le <hoang.h.le@dektech.com.au>
Link: https://lore.kernel.org/r/20201203035045.4564-1-hoang.h.le@dektech.com.auSigned-off-by: NJakub Kicinski <kuba@kernel.org>

Fix Return: kernel-doc notation in all net/tipc/ source files.
Also keep ReST list notation intact for output formatting.
Fix a few typos in comments.
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

Fix socket.c kernel-doc warnings in preparation for adding to the
networking docbook.

Also, for rcvbuf_limit(), use bullet notation so that the lines do
not run together.

../net/tipc/socket.c:130: warning: Function parameter or member 'cong_links' not described in 'tipc_sock'
../net/tipc/socket.c:130: warning: Function parameter or member 'probe_unacked' not described in 'tipc_sock'
../net/tipc/socket.c:130: warning: Function parameter or member 'snd_win' not described in 'tipc_sock'
../net/tipc/socket.c:130: warning: Function parameter or member 'peer_caps' not described in 'tipc_sock'
../net/tipc/socket.c:130: warning: Function parameter or member 'rcv_win' not described in 'tipc_sock'
../net/tipc/socket.c:130: warning: Function parameter or member 'group' not described in 'tipc_sock'
../net/tipc/socket.c:130: warning: Function parameter or member 'oneway' not described in 'tipc_sock'
../net/tipc/socket.c:130: warning: Function parameter or member 'nagle_start' not described in 'tipc_sock'
../net/tipc/socket.c:130: warning: Function parameter or member 'snd_backlog' not described in 'tipc_sock'
../net/tipc/socket.c:130: warning: Function parameter or member 'msg_acc' not described in 'tipc_sock'
../net/tipc/socket.c:130: warning: Function parameter or member 'pkt_cnt' not described in 'tipc_sock'
../net/tipc/socket.c:130: warning: Function parameter or member 'expect_ack' not described in 'tipc_sock'
../net/tipc/socket.c:130: warning: Function parameter or member 'nodelay' not described in 'tipc_sock'
../net/tipc/socket.c:130: warning: Function parameter or member 'group_is_open' not described in 'tipc_sock'
../net/tipc/socket.c:267: warning: Function parameter or member 'sk' not described in 'tsk_advance_rx_queue'
../net/tipc/socket.c:295: warning: Function parameter or member 'sk' not described in 'tsk_rej_rx_queue'
../net/tipc/socket.c:295: warning: Function parameter or member 'error' not described in 'tsk_rej_rx_queue'
../net/tipc/socket.c:894: warning: Function parameter or member 'tsk' not described in 'tipc_send_group_msg'
../net/tipc/socket.c:1187: warning: Function parameter or member 'net' not described in 'tipc_sk_mcast_rcv'
../net/tipc/socket.c:1323: warning: Function parameter or member 'inputq' not described in 'tipc_sk_conn_proto_rcv'
../net/tipc/socket.c:1323: warning: Function parameter or member 'xmitq' not described in 'tipc_sk_conn_proto_rcv'
../net/tipc/socket.c:1885: warning: Function parameter or member 'sock' not described in 'tipc_recvmsg'
../net/tipc/socket.c:1993: warning: Function parameter or member 'sock' not described in 'tipc_recvstream'
../net/tipc/socket.c:2313: warning: Function parameter or member 'xmitq' not described in 'tipc_sk_filter_rcv'
../net/tipc/socket.c:2404: warning: Function parameter or member 'xmitq' not described in 'tipc_sk_enqueue'
../net/tipc/socket.c:2456: warning: Function parameter or member 'net' not described in 'tipc_sk_rcv'
../net/tipc/socket.c:2693: warning: Function parameter or member 'kern' not described in 'tipc_accept'
../net/tipc/socket.c:3816: warning: Excess function parameter 'sysctl_tipc_sk_filter' description in 'tipc_sk_filtering'
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

Fix node.c kernel-doc warnings in preparation for adding to the
networking docbook.

../net/tipc/node.c:141: warning: Function parameter or member 'kref' not described in 'tipc_node'
../net/tipc/node.c:141: warning: Function parameter or member 'bc_entry' not described in 'tipc_node'
../net/tipc/node.c:141: warning: Function parameter or member 'failover_sent' not described in 'tipc_node'
../net/tipc/node.c:141: warning: Function parameter or member 'peer_id' not described in 'tipc_node'
../net/tipc/node.c:141: warning: Function parameter or member 'peer_id_string' not described in 'tipc_node'
../net/tipc/node.c:141: warning: Function parameter or member 'conn_sks' not described in 'tipc_node'
../net/tipc/node.c:141: warning: Function parameter or member 'keepalive_intv' not described in 'tipc_node'
../net/tipc/node.c:141: warning: Function parameter or member 'timer' not described in 'tipc_node'
../net/tipc/node.c:141: warning: Function parameter or member 'peer_net' not described in 'tipc_node'
../net/tipc/node.c:141: warning: Function parameter or member 'peer_hash_mix' not described in 'tipc_node'
../net/tipc/node.c:273: warning: Function parameter or member '__n' not described in 'tipc_node_crypto_rx'
../net/tipc/node.c:822: warning: Function parameter or member 'n' not described in '__tipc_node_link_up'
../net/tipc/node.c:822: warning: Function parameter or member 'bearer_id' not described in '__tipc_node_link_up'
../net/tipc/node.c:822: warning: Function parameter or member 'xmitq' not described in '__tipc_node_link_up'
../net/tipc/node.c:888: warning: Function parameter or member 'n' not described in 'tipc_node_link_up'
../net/tipc/node.c:888: warning: Function parameter or member 'bearer_id' not described in 'tipc_node_link_up'
../net/tipc/node.c:888: warning: Function parameter or member 'xmitq' not described in 'tipc_node_link_up'
../net/tipc/node.c:948: warning: Function parameter or member 'n' not described in '__tipc_node_link_down'
../net/tipc/node.c:948: warning: Function parameter or member 'bearer_id' not described in '__tipc_node_link_down'
../net/tipc/node.c:948: warning: Function parameter or member 'xmitq' not described in '__tipc_node_link_down'
../net/tipc/node.c:948: warning: Function parameter or member 'maddr' not described in '__tipc_node_link_down'
../net/tipc/node.c:1537: warning: Function parameter or member 'net' not described in 'tipc_node_get_linkname'
../net/tipc/node.c:1537: warning: Function parameter or member 'len' not described in 'tipc_node_get_linkname'
../net/tipc/node.c:1891: warning: Function parameter or member 'n' not described in 'tipc_node_check_state'
../net/tipc/node.c:1891: warning: Function parameter or member 'xmitq' not described in 'tipc_node_check_state'
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

Fix name_table.c kernel-doc warnings in preparation for adding to the
networking docbook.

../net/tipc/name_table.c:115: warning: Function parameter or member 'start' not described in 'service_range_foreach_match'
../net/tipc/name_table.c:115: warning: Function parameter or member 'end' not described in 'service_range_foreach_match'
../net/tipc/name_table.c:127: warning: Function parameter or member 'start' not described in 'service_range_match_first'
../net/tipc/name_table.c:127: warning: Function parameter or member 'end' not described in 'service_range_match_first'
../net/tipc/name_table.c:176: warning: Function parameter or member 'start' not described in 'service_range_match_next'
../net/tipc/name_table.c:176: warning: Function parameter or member 'end' not described in 'service_range_match_next'
../net/tipc/name_table.c:225: warning: Function parameter or member 'type' not described in 'tipc_publ_create'
../net/tipc/name_table.c:225: warning: Function parameter or member 'lower' not described in 'tipc_publ_create'
../net/tipc/name_table.c:225: warning: Function parameter or member 'upper' not described in 'tipc_publ_create'
../net/tipc/name_table.c:225: warning: Function parameter or member 'scope' not described in 'tipc_publ_create'
../net/tipc/name_table.c:225: warning: Function parameter or member 'node' not described in 'tipc_publ_create'
../net/tipc/name_table.c:225: warning: Function parameter or member 'port' not described in 'tipc_publ_create'
../net/tipc/name_table.c:225: warning: Function parameter or member 'key' not described in 'tipc_publ_create'
../net/tipc/name_table.c:252: warning: Function parameter or member 'type' not described in 'tipc_service_create'
../net/tipc/name_table.c:252: warning: Function parameter or member 'hd' not described in 'tipc_service_create'
../net/tipc/name_table.c:367: warning: Function parameter or member 'sr' not described in 'tipc_service_remove_publ'
../net/tipc/name_table.c:367: warning: Function parameter or member 'node' not described in 'tipc_service_remove_publ'
../net/tipc/name_table.c:367: warning: Function parameter or member 'key' not described in 'tipc_service_remove_publ'
../net/tipc/name_table.c:383: warning: Function parameter or member 'pa' not described in 'publication_after'
../net/tipc/name_table.c:383: warning: Function parameter or member 'pb' not described in 'publication_after'
../net/tipc/name_table.c:401: warning: Function parameter or member 'service' not described in 'tipc_service_subscribe'
../net/tipc/name_table.c:401: warning: Function parameter or member 'sub' not described in 'tipc_service_subscribe'
../net/tipc/name_table.c:546: warning: Function parameter or member 'net' not described in 'tipc_nametbl_translate'
../net/tipc/name_table.c:546: warning: Function parameter or member 'type' not described in 'tipc_nametbl_translate'
../net/tipc/name_table.c:546: warning: Function parameter or member 'instance' not described in 'tipc_nametbl_translate'
../net/tipc/name_table.c:546: warning: Function parameter or member 'dnode' not described in 'tipc_nametbl_translate'
../net/tipc/name_table.c:762: warning: Function parameter or member 'net' not described in 'tipc_nametbl_withdraw'
../net/tipc/name_table.c:762: warning: Function parameter or member 'type' not described in 'tipc_nametbl_withdraw'
../net/tipc/name_table.c:762: warning: Function parameter or member 'lower' not described in 'tipc_nametbl_withdraw'
../net/tipc/name_table.c:762: warning: Function parameter or member 'upper' not described in 'tipc_nametbl_withdraw'
../net/tipc/name_table.c:762: warning: Function parameter or member 'key' not described in 'tipc_nametbl_withdraw'
../net/tipc/name_table.c:796: warning: Function parameter or member 'sub' not described in 'tipc_nametbl_subscribe'
../net/tipc/name_table.c:826: warning: Function parameter or member 'sub' not described in 'tipc_nametbl_unsubscribe'
../net/tipc/name_table.c:876: warning: Function parameter or member 'net' not described in 'tipc_service_delete'
../net/tipc/name_table.c:876: warning: Function parameter or member 'sc' not described in 'tipc_service_delete'
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

Fix name_distr.c kernel-doc warnings in preparation for adding to the
networking docbook.

../net/tipc/name_distr.c:55: warning: Function parameter or member 'i' not described in 'publ_to_item'
../net/tipc/name_distr.c:55: warning: Function parameter or member 'p' not described in 'publ_to_item'
../net/tipc/name_distr.c:70: warning: Function parameter or member 'net' not described in 'named_prepare_buf'
../net/tipc/name_distr.c:70: warning: Function parameter or member 'type' not described in 'named_prepare_buf'
../net/tipc/name_distr.c:70: warning: Function parameter or member 'size' not described in 'named_prepare_buf'
../net/tipc/name_distr.c:70: warning: Function parameter or member 'dest' not described in 'named_prepare_buf'
../net/tipc/name_distr.c:88: warning: Function parameter or member 'net' not described in 'tipc_named_publish'
../net/tipc/name_distr.c:88: warning: Function parameter or member 'publ' not described in 'tipc_named_publish'
../net/tipc/name_distr.c:116: warning: Function parameter or member 'net' not described in 'tipc_named_withdraw'
../net/tipc/name_distr.c:116: warning: Function parameter or member 'publ' not described in 'tipc_named_withdraw'
../net/tipc/name_distr.c:147: warning: Function parameter or member 'net' not described in 'named_distribute'
../net/tipc/name_distr.c:147: warning: Function parameter or member 'seqno' not described in 'named_distribute'
../net/tipc/name_distr.c:199: warning: Function parameter or member 'net' not described in 'tipc_named_node_up'
../net/tipc/name_distr.c:199: warning: Function parameter or member 'dnode' not described in 'tipc_named_node_up'
../net/tipc/name_distr.c:199: warning: Function parameter or member 'capabilities' not described in 'tipc_named_node_up'
../net/tipc/name_distr.c:225: warning: Function parameter or member 'net' not described in 'tipc_publ_purge'
../net/tipc/name_distr.c:225: warning: Function parameter or member 'publ' not described in 'tipc_publ_purge'
../net/tipc/name_distr.c:225: warning: Function parameter or member 'addr' not described in 'tipc_publ_purge'
../net/tipc/name_distr.c:272: warning: Function parameter or member 'net' not described in 'tipc_update_nametbl'
../net/tipc/name_distr.c:272: warning: Function parameter or member 'i' not described in 'tipc_update_nametbl'
../net/tipc/name_distr.c:272: warning: Function parameter or member 'node' not described in 'tipc_update_nametbl'
../net/tipc/name_distr.c:272: warning: Function parameter or member 'dtype' not described in 'tipc_update_nametbl'
../net/tipc/name_distr.c:353: warning: Function parameter or member 'net' not described in 'tipc_named_rcv'
../net/tipc/name_distr.c:353: warning: Function parameter or member 'namedq' not described in 'tipc_named_rcv'
../net/tipc/name_distr.c:353: warning: Function parameter or member 'rcv_nxt' not described in 'tipc_named_rcv'
../net/tipc/name_distr.c:353: warning: Function parameter or member 'open' not described in 'tipc_named_rcv'
../net/tipc/name_distr.c:383: warning: Function parameter or member 'net' not described in 'tipc_named_reinit'
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

Fix link.c kernel-doc warnings in preparation for adding to the
networking docbook.

../net/tipc/link.c:200: warning: Function parameter or member 'session' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'snd_nxt_state' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'rcv_nxt_state' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'in_session' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'active' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'if_name' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'rst_cnt' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'drop_point' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'failover_reasm_skb' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'failover_deferdq' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'transmq' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'backlog' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'snd_nxt' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'rcv_unacked' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'deferdq' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'window' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'min_win' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'ssthresh' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'max_win' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'cong_acks' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'checkpoint' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'reasm_tnlmsg' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'last_gap' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'last_ga' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'bc_rcvlink' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'bc_sndlink' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'nack_state' not described in 'tipc_link'
../net/tipc/link.c:200: warning: Function parameter or member 'bc_peer_is_up' not described in 'tipc_link'
../net/tipc/link.c:473: warning: Function parameter or member 'self' not described in 'tipc_link_create'
../net/tipc/link.c:473: warning: Function parameter or member 'peer_id' not described in 'tipc_link_create'
../net/tipc/link.c:473: warning: Excess function parameter 'ownnode' description in 'tipc_link_create'
../net/tipc/link.c:544: warning: Function parameter or member 'ownnode' not described in 'tipc_link_bc_create'
../net/tipc/link.c:544: warning: Function parameter or member 'peer' not described in 'tipc_link_bc_create'
../net/tipc/link.c:544: warning: Function parameter or member 'peer_id' not described in 'tipc_link_bc_create'
../net/tipc/link.c:544: warning: Function parameter or member 'peer_caps' not described in 'tipc_link_bc_create'
../net/tipc/link.c:544: warning: Function parameter or member 'bc_sndlink' not described in 'tipc_link_bc_create'
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

Fix kernel-doc warnings in bearer.c:

../net/tipc/bearer.c:77: warning: Function parameter or member 'name' not described in 'tipc_media_find'
../net/tipc/bearer.c:91: warning: Function parameter or member 'type' not described in 'media_find_id'
../net/tipc/bearer.c:105: warning: Function parameter or member 'buf' not described in 'tipc_media_addr_printf'
../net/tipc/bearer.c:105: warning: Function parameter or member 'len' not described in 'tipc_media_addr_printf'
../net/tipc/bearer.c:105: warning: Function parameter or member 'a' not described in 'tipc_media_addr_printf'
../net/tipc/bearer.c:174: warning: Function parameter or member 'net' not described in 'tipc_bearer_find'
../net/tipc/bearer.c:174: warning: Function parameter or member 'name' not described in 'tipc_bearer_find'
../net/tipc/bearer.c:238: warning: Function parameter or member 'net' not described in 'tipc_enable_bearer'
../net/tipc/bearer.c:238: warning: Function parameter or member 'name' not described in 'tipc_enable_bearer'
../net/tipc/bearer.c:238: warning: Function parameter or member 'disc_domain' not described in 'tipc_enable_bearer'
../net/tipc/bearer.c:238: warning: Function parameter or member 'prio' not described in 'tipc_enable_bearer'
../net/tipc/bearer.c:238: warning: Function parameter or member 'attr' not described in 'tipc_enable_bearer'
../net/tipc/bearer.c:350: warning: Function parameter or member 'net' not described in 'tipc_reset_bearer'
../net/tipc/bearer.c:350: warning: Function parameter or member 'b' not described in 'tipc_reset_bearer'
../net/tipc/bearer.c:374: warning: Function parameter or member 'net' not described in 'bearer_disable'
../net/tipc/bearer.c:374: warning: Function parameter or member 'b' not described in 'bearer_disable'
../net/tipc/bearer.c:462: warning: Function parameter or member 'net' not described in 'tipc_l2_send_msg'
../net/tipc/bearer.c:479: warning: Function parameter or member 'net' not described in 'tipc_l2_send_msg'
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

kernel-doc and Sphinx fixes to eliminate lots of warnings
in preparation for adding to the networking docbook.

../net/tipc/crypto.c:57: warning: cannot understand function prototype: 'enum '
../net/tipc/crypto.c:69: warning: cannot understand function prototype: 'enum '
../net/tipc/crypto.c:130: warning: Function parameter or member 'tfm' not described in 'tipc_tfm'
../net/tipc/crypto.c:130: warning: Function parameter or member 'list' not described in 'tipc_tfm'
../net/tipc/crypto.c:172: warning: Function parameter or member 'stat' not described in 'tipc_crypto_stats'
../net/tipc/crypto.c:232: warning: Function parameter or member 'flags' not described in 'tipc_crypto'
../net/tipc/crypto.c:329: warning: Function parameter or member 'ukey' not described in 'tipc_aead_key_validate'
../net/tipc/crypto.c:329: warning: Function parameter or member 'info' not described in 'tipc_aead_key_validate'
../net/tipc/crypto.c:482: warning: Function parameter or member 'aead' not described in 'tipc_aead_tfm_next'
../net/tipc/trace.c:43: warning: cannot understand function prototype: 'unsigned long sysctl_tipc_sk_filter[5] __read_mostly = '

Documentation/networking/tipc:57: ../net/tipc/msg.c:584: WARNING: Unexpected indentation.
Documentation/networking/tipc:63: ../net/tipc/name_table.c:536: WARNING: Unexpected indentation.
Documentation/networking/tipc:63: ../net/tipc/name_table.c:537: WARNING: Block quote ends without a blank line; unexpected unindent.
Documentation/networking/tipc:78: ../net/tipc/socket.c:3809: WARNING: Unexpected indentation.
Documentation/networking/tipc:78: ../net/tipc/socket.c:3807: WARNING: Inline strong start-string without end-string.
Documentation/networking/tipc:72: ../net/tipc/node.c:904: WARNING: Unexpected indentation.
Documentation/networking/tipc:39: ../net/tipc/crypto.c:97: WARNING: Block quote ends without a blank line; unexpected unindent.
Documentation/networking/tipc:39: ../net/tipc/crypto.c:98: WARNING: Block quote ends without a blank line; unexpected unindent.
Documentation/networking/tipc:39: ../net/tipc/crypto.c:141: WARNING: Inline strong start-string without end-string.

../net/tipc/discover.c:82: warning: Function parameter or member 'skb' not described in 'tipc_disc_init_msg'

../net/tipc/msg.c:69: warning: Function parameter or member 'gfp' not described in 'tipc_buf_acquire'
../net/tipc/msg.c:382: warning: Function parameter or member 'offset' not described in 'tipc_msg_build'
../net/tipc/msg.c:708: warning: Function parameter or member 'net' not described in 'tipc_msg_lookup_dest'

../net/tipc/subscr.c:65: warning: Function parameter or member 'seq' not described in 'tipc_sub_check_overlap'
../net/tipc/subscr.c:65: warning: Function parameter or member 'found_lower' not described in 'tipc_sub_check_overlap'
../net/tipc/subscr.c:65: warning: Function parameter or member 'found_upper' not described in 'tipc_sub_check_overlap'

../net/tipc/udp_media.c:75: warning: Function parameter or member 'proto' not described in 'udp_media_addr'
../net/tipc/udp_media.c:75: warning: Function parameter or member 'port' not described in 'udp_media_addr'
../net/tipc/udp_media.c:75: warning: Function parameter or member 'ipv4' not described in 'udp_media_addr'
../net/tipc/udp_media.c:75: warning: Function parameter or member 'ipv6' not described in 'udp_media_addr'
../net/tipc/udp_media.c:98: warning: Function parameter or member 'rcast' not described in 'udp_bearer'

Also fixed a typo of "duest" to "dest".
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

Fix tipc header files for adding to the networking docbook.

Remove some uses of "/**" that were not kernel-doc notation.

Fix some source formatting to eliminate Sphinx warnings.

Add missing struct member and function argument kernel-doc descriptions.

Correct the description of a couple of struct members that were
marked as "(FIXME)".

Documentation/networking/tipc:18: ../net/tipc/name_table.h:65: WARNING: Unexpected indentation.
Documentation/networking/tipc:18: ../net/tipc/name_table.h:66: WARNING: Block quote ends without a blank line; unexpected unindent.

../net/tipc/bearer.h:128: warning: Function parameter or member 'min_win' not described in 'tipc_media'
../net/tipc/bearer.h:128: warning: Function parameter or member 'max_win' not described in 'tipc_media'

../net/tipc/bearer.h:171: warning: Function parameter or member 'min_win' not described in 'tipc_bearer'
../net/tipc/bearer.h:171: warning: Function parameter or member 'max_win' not described in 'tipc_bearer'
../net/tipc/bearer.h:171: warning: Function parameter or member 'disc' not described in 'tipc_bearer'
../net/tipc/bearer.h:171: warning: Function parameter or member 'up' not described in 'tipc_bearer'
../net/tipc/bearer.h:171: warning: Function parameter or member 'refcnt' not described in 'tipc_bearer'

../net/tipc/name_distr.h:68: warning: Function parameter or member 'port' not described in 'distr_item'

../net/tipc/name_table.h:111: warning: Function parameter or member 'services' not described in 'name_table'
../net/tipc/name_table.h:111: warning: Function parameter or member 'cluster_scope_lock' not described in 'name_table'
../net/tipc/name_table.h:111: warning: Function parameter or member 'rc_dests' not described in 'name_table'
../net/tipc/name_table.h:111: warning: Function parameter or member 'snd_nxt' not described in 'name_table'

../net/tipc/subscr.h:67: warning: Function parameter or member 'kref' not described in 'tipc_subscription'
../net/tipc/subscr.h:67: warning: Function parameter or member 'net' not described in 'tipc_subscription'
../net/tipc/subscr.h:67: warning: Function parameter or member 'service_list' not described in 'tipc_subscription'
../net/tipc/subscr.h:67: warning: Function parameter or member 'conid' not described in 'tipc_subscription'
../net/tipc/subscr.h:67: warning: Function parameter or member 'inactive' not described in 'tipc_subscription'
../net/tipc/subscr.h:67: warning: Function parameter or member 'lock' not described in 'tipc_subscription'
Signed-off-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

In commit 682cd3cf
("tipc: confgiure and apply UDP bearer MTU on running links"), we
introduced a function to change UDP bearer MTU and applied this new value
across existing per-link. However, we did not apply this new MTU value at
node level. This lead to packet dropped at link level if its size is
greater than new MTU value.

To fix this issue, we also apply this new MTU value for node level.

Fixes: 682cd3cf ("tipc: confgiure and apply UDP bearer MTU on running links")
Acked-by: NJon Maloy <jmaloy@redhat.com>
Signed-off-by: NHoang Le <hoang.h.le@dektech.com.au>
Link: https://lore.kernel.org/r/20201130025544.3602-1-hoang.h.le@dektech.com.auSigned-off-by: NJakub Kicinski <kuba@kernel.org>

We update the terminology in the code so that deprecated structure
names and macros are replaced with those currently recommended in
the user API.

struct tipc_portid   -> struct tipc_socket_addr
struct tipc_name     -> struct tipc_service_addr
struct tipc_name_seq -> struct tipc_service_range

TIPC_ADDR_ID       -> TIPC_SOCKET_ADDR
TIPC_ADDR_NAME     -> TIPC_SERVICE_ADDR
TIPC_ADDR_NAMESEQ  -> TIPC_SERVICE_RANGE
TIPC_CFG_SRV       -> TIPC_NODE_STATE
Acked-by: NYing Xue <ying.xue@windriver.com>
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

The 32-bit node number, aka node hash or node address, is calculated
based on the 128-bit node identity when it is not set explicitly by
the user. In future commits we will need to perform this hash operation
on peer nodes while feeling safe that we obtain the same result.

We do this by interpreting the initial hash as a network byte order
number. Whenever we need to use the number locally on a node
we must therefore translate it to host byte order to obtain an
architecure independent result.

Furthermore, given the context where we use this number, we must not
allow it to be zero unless the node identity also is zero. Hence, in
the rare cases when the xor-ed hash value may end up as zero we replace
it with a fix number, knowing that the code anyway is capable of
handling hash collisions.
Acked-by: NYing Xue <ying.xue@windriver.com>
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

We refactor the tipc_sk_bind() function, so that the lock handling
is handled separately from the logics. We also move some sanity
tests to earlier in the call chain, to the function tipc_bind().
Acked-by: NYing Xue <ying.xue@windriver.com>
Signed-off-by: NJon Maloy <jmaloy@redhat.com>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

Calls to nla_strlcpy are now replaced by calls to nla_strscpy which is the new
name of this function.
Signed-off-by: NFrancis Laniel <laniel_francis@privacyrequired.com>
Reviewed-by: NKees Cook <keescook@chromium.org>
Signed-off-by: NJakub Kicinski <kuba@kernel.org>

Replace strncpy() with strscpy(), fixes the following warning:

In function 'bearer_name_validate',
    inlined from 'tipc_enable_bearer' at net/tipc/bearer.c:246:7:
net/tipc/bearer.c:141:2: warning: 'strncpy' specified bound 32 equals destination size [-Wstringop-truncation]
  strncpy(name_copy, name, TIPC_MAX_BEARER_NAME);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Signed-off-by: NWenlin Kang <wenlin.kang@windriver.com>
Acked-by: NYing Xue <ying.xue@windriver.com>
Link: https://lore.kernel.org/r/20201112093442.8132-1-wenlin.kang@windriver.comSigned-off-by: NJakub Kicinski <kuba@kernel.org>

kmemleak report a memory leak as follows:

unreferenced object 0xffff88810a596800 (size 512):
  comm "ip", pid 21558, jiffies 4297568990 (age 112.120s)
  hex dump (first 32 bytes):
    00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00  .....N..........
    ff ff ff ff ff ff ff ff 00 83 60 b0 ff ff ff ff  ..........`.....
  backtrace:
    [<0000000022bbe21f>] tipc_topsrv_init_net+0x1f3/0xa70
    [<00000000fe15ddf7>] ops_init+0xa8/0x3c0
    [<00000000138af6f2>] setup_net+0x2de/0x7e0
    [<000000008c6807a3>] copy_net_ns+0x27d/0x530
    [<000000006b21adbd>] create_new_namespaces+0x382/0xa30
    [<00000000bb169746>] unshare_nsproxy_namespaces+0xa1/0x1d0
    [<00000000fe2e42bc>] ksys_unshare+0x39c/0x780
    [<0000000009ba3b19>] __x64_sys_unshare+0x2d/0x40
    [<00000000614ad866>] do_syscall_64+0x56/0xa0
    [<00000000a1b5ca3c>] entry_SYSCALL_64_after_hwframe+0x44/0xa9

'srv' is malloced in tipc_topsrv_start() but not free before
leaving from the error handling cases. We need to free it.

Fixes: 5c45ab24 ("tipc: make struct tipc_server private for server.c")
Reported-by: NHulk Robot <hulkci@huawei.com>
Signed-off-by: NWang Hai <wanghai38@huawei.com>
Link: https://lore.kernel.org/r/20201109140913.47370-1-wanghai38@huawei.comSigned-off-by: NJakub Kicinski <kuba@kernel.org>