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08c30aca9e
linux/include/net
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Dean Jenkins 08c30aca9e Bluetooth: Remove RFCOMM session refcnt 
Previous commits have improved the handling of the RFCOMM session
timer and the RFCOMM session pointers such that freed RFCOMM
session structures should no longer be erroneously accessed. The
RFCOMM session refcnt now has no purpose and will be deleted by
this commit.

Note that the RFCOMM session is now deleted as soon as the
RFCOMM control channel link is no longer required. This makes the
lifetime of the RFCOMM session deterministic and absolute.
Previously with the refcnt, there was uncertainty about when
the session structure would be deleted because the relative
refcnt prevented the session structure from being deleted at will.

It was noted that the refcnt could malfunction under very heavy
real-time processor loading in embedded SMP environments. This
could cause premature RFCOMM session deletion or double session
deletion that could result in kernel crashes. Removal of the
refcnt prevents this issue.

There are 4 connection / disconnection RFCOMM session scenarios:
host initiated control link ---> host disconnected control link
host initiated ctrl link ---> remote device disconnected ctrl link
remote device initiated ctrl link ---> host disconnected ctrl link
remote device initiated ctrl link ---> remote device disc'ed ctrl link

The control channel connection procedures are independent of the
disconnection procedures. Strangely, the RFCOMM session refcnt was
applying special treatment so erroneously combining connection and
disconnection events. This commit fixes this issue by removing
some session code that used the "initiator" member of the session
structure that was intended for use with the data channels.

Signed-off-by: Dean Jenkins <Dean_Jenkins@mentor.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2013-03-08 10:40:24 -03:00
..
9p 9p: turn fid->dlist into hlist 2013-02-27 22:51:08 -05:00
bluetooth Bluetooth: Remove RFCOMM session refcnt 2013-03-08 10:40:24 -03:00
caif caif-hsi: Remove use of module parameters 2012-06-25 16:44:12 -07:00
irda treewide: Replace incomming with incoming in all comments and strings 2013-01-03 16:15:49 +01:00
iucv af_iucv: add shutdown for HS transport 2012-03-07 22:52:24 -08:00
netfilter netfilter: nf_ct_helper: better logging for dropped packets 2013-02-19 02:48:05 +01:00
netns xfrm: make gc_thresh configurable in all namespaces 2013-02-06 11:36:29 +01:00
nfc NFC: Initial Secure Element API 2013-01-10 00:51:54 +01:00
phonet net: remove my future former mail address 2012-06-17 16:29:38 -07:00
sctp hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
tc_act
act_api.h act_police: move struct tcf_police to act_police.c 2013-02-12 18:59:45 -05:00
addrconf.h ipv4: introduce address lifetime 2013-01-29 13:59:57 -05:00
af_ieee802154.h
af_rxrpc.h
af_unix.h unix: Remove unused field from unix_sock 2012-10-21 20:37:06 -04:00
ah.h
arp.h net: Dont use ifindices in hash fns 2012-08-09 16:18:06 -07:00
atmclip.h atm: clip: Use device neigh support on top of "arp_tbl". 2011-11-30 18:51:03 -05:00
ax25.h hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
ax88796.h
cfg80211-wext.h
cfg80211.h Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next into for-davem 2013-02-18 13:47:13 -05:00
checksum.h net: core: add function for incremental IPv6 pseudo header checksum updates 2012-08-30 03:00:16 +02:00
cipso_ipv4.h cipso: handle CIPSO options correctly when NetLabel is disabled 2012-06-01 14:18:29 -04:00
cls_cgroup.h net: Update args to dummy sock_update_classid(). 2012-10-26 05:07:00 -04:00
codel.h codel: refine one condition to avoid a nul rec_inv_sqrt 2012-08-10 16:52:54 -07:00
compat.h net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
datalink.h
dcbevent.h
dcbnl.h net/dcb: Add an optional max rate attribute 2012-04-05 05:08:04 -04:00
dn_dev.h
dn_fib.h net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
dn_neigh.h
dn_nsp.h
dn_route.h decnet: use correct RCU API to deref sk_dst_cache field 2013-01-28 00:15:27 -05:00
dn.h net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
dsa.h dsa: Include linux/if_ether.h to fix build error 2011-12-01 11:41:06 -05:00
dsfield.h ipv6: Optimize ipv6_change_dsfield(). 2013-01-09 23:59:53 -08:00
dst_ops.h net: Fix warnings in dst_ops.h 2012-07-19 10:43:03 -07:00
dst.h ipv6: fix race condition regarding dst->expires and dst->from. 2013-02-20 15:11:45 -05:00
esp.h
ethoc.h
fib_rules.h ipv4: Elide fib_validate_source() completely when possible. 2012-06-29 01:36:36 -07:00
flow_keys.h flow_dissector: use a 64bit load/store 2011-11-29 13:17:03 -05:00
flow.h ipv4: Add FLOWI_FLAG_KNOWN_NH 2012-10-08 17:42:36 -04:00
garp.h
gen_stats.h
genetlink.h netlink: Rename pid to portid to avoid confusion 2012-09-10 15:30:41 -04:00
gre.h
gro_cells.h gro: Fix kcalloc argument order 2013-01-27 22:46:33 -05:00
icmp.h ipv4: fix error handling in icmp_protocol. 2013-02-22 15:10:18 -05:00
ieee80211_radiotap.h mac80211: support (partial) VHT radiotap information 2012-11-27 11:56:18 +01:00
ieee802154_netdev.h mac802154: declare reduced mlme operations 2012-05-16 15:16:56 -04:00
ieee802154.h 6LoWPAN: add fragmentation support 2011-11-14 00:19:42 -05:00
if_inet6.h net: delete all instances of special processing for token ring 2012-05-15 20:14:35 -04:00
inet6_connection_sock.h ipv6: Add helper inet6_csk_update_pmtu(). 2012-07-16 03:44:56 -07:00
inet6_hashtables.h ipv6: use a stronger hash for tcp 2013-02-21 18:15:58 -05:00
inet_common.h net-tcp: Fast Open client - sendmsg(MSG_FASTOPEN) 2012-07-19 11:02:03 -07:00
inet_connection_sock.h inet: Fix kmemleak in tcp_v4/6_syn_recv_sock and dccp_v4/6_request_recv_sock 2012-12-14 13:14:07 -05:00
inet_ecn.h tunnel: drop packet if ECN present with not-ECT 2012-09-27 18:12:37 -04:00
inet_frag.h net: fix possible deadlock in sum_frag_mem_limit 2013-02-22 15:10:19 -05:00
inet_hashtables.h hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
inet_sock.h ipv6: use a stronger hash for tcp 2013-02-21 18:15:58 -05:00
inet_timewait_sock.h hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
inetpeer.h ipv4: Maintain redirect and PMTU info in struct rtable again. 2012-07-10 22:40:14 -07:00
ip6_checksum.h ipv6: move csum_ipv6_magic() and udp6_csum_init() into static library 2013-01-08 17:56:10 -08:00
ip6_fib.h ipv6: fix race condition regarding dst->expires and dst->from. 2013-02-20 15:11:45 -05:00
ip6_route.h ipv6: Remove unused neigh argument for icmp6_dst_alloc() and its callers. 2013-01-18 14:41:13 -05:00
ip6_tunnel.h gre: Support GRE over IPv6 2012-08-14 14:28:32 -07:00
ip_fib.h ipv4: add a fib_type to fib_info 2012-10-04 13:58:26 -04:00
ip_vs.h ipvs: fix build errors related to config option combinations 2012-10-23 09:23:40 +09:00
ip.h ipv4: Add a socket release callback for datagram sockets 2013-01-21 14:17:05 -05:00
ipcomp.h
ipconfig.h
ipip.h IP_GRE: Fix IP-Identification. 2013-02-25 15:47:41 -05:00
ipv6.h ipv6: use a stronger hash for tcp 2013-02-21 18:15:58 -05:00
ipx.h
iw_handler.h
lapb.h lapb: Neaten debugging 2012-05-17 18:45:20 -04:00
lib80211.h include: replace linux/module.h with "struct module" wherever possible 2011-10-31 19:32:32 -04:00
llc_c_ac.h
llc_c_ev.h net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
llc_c_st.h
llc_conn.h
llc_if.h
llc_pdu.h net: delete all instances of special processing for token ring 2012-05-15 20:14:35 -04:00
llc_s_ac.h
llc_s_ev.h
llc_s_st.h
llc_sap.h
llc.h llc: Remove stray reference to sysctl_llc_station_ack_timeout. 2012-09-17 13:13:24 -04:00
mac80211.h mac80211: stop modifying HT SMPS capability 2013-02-15 09:41:41 +01:00
mac802154.h mac802154: add wpan device-class support 2012-06-26 21:06:11 -07:00
mip6.h
mld.h
mrp.h net/802: Implement Multiple Registration Protocol (MRP) 2013-02-10 20:37:22 -05:00
ndisc.h ndisc: Move ndisc_opt_addr_space() to include/net/ndisc.h. 2013-01-21 13:33:14 -05:00
neighbour.h net neighbour, decnet: Ensure to align device private data on preferred alignment. 2013-02-11 00:21:44 -05:00
net_namespace.h proc: Usable inode numbers for the namespace file descriptors. 2012-11-20 04:19:49 -08:00
net_ratelimit.h
netdma.h
netevent.h ipv6 netevent: Remove old_neigh from netevent_redirect. 2013-01-14 15:04:59 -05:00
netlabel.h userns: Convert the audit loginuid to be a kuid 2012-09-17 18:08:54 -07:00
netlink.h netlink: Rename pid to portid to avoid confusion 2012-09-10 15:30:41 -04:00
netprio_cgroup.h netprio_cgroup: use cgroup->id instead of cgroup_netprio_state->prioidx 2012-11-22 07:32:47 -08:00
netrom.h hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
nexthop.h
nl802154.h
p8022.h
ping.h
pkt_cls.h pkt_sched: namespace aware act_mirred 2013-01-14 15:09:36 -05:00
pkt_sched.h sch_api: introduce qdisc_watchdog_schedule_ns() 2013-02-12 18:59:45 -05:00
protocol.h net: Remove code duplication between offload structures 2012-11-15 17:39:51 -05:00
psnap.h
raw.h
rawv6.h ipv6: bool/const conversions phase2 2012-05-19 01:08:16 -04:00
red.h net_sched: red: Make minor corrections to comments 2012-04-16 23:53:11 -04:00
regulatory.h regulatory: use RCU to protect last_request 2013-01-03 13:01:30 +01:00
request_sock.h tcp: better retrans tracking for defer-accept 2012-11-03 14:45:00 -04:00
rose.h
route.h ipv4: avoid a test in ip_rt_put() 2012-11-03 14:59:04 -04:00
rtnetlink.h rtnelink: remove unused parameter from rtnl_create_link(). 2012-11-30 12:24:40 -05:00
sch_generic.h hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
scm.h net: Remove unnecessary NULL check in scm_destroy(). 2012-09-24 15:52:33 -04:00
secure_seq.h
slhc_vj.h
snmp.h net: avoid reloads in SNMP_UPD_PO_STATS 2012-08-06 13:40:47 -07:00
sock.h hlist: drop the node parameter from iterators 2013-02-27 19:10:24 -08:00
stp.h
tcp_memcontrol.h cgroup: pass struct mem_cgroup instead of struct cgroup to socket memcg 2012-04-10 10:04:07 -07:00
tcp_states.h
tcp.h tcp: remove Appropriate Byte Count support 2013-02-05 14:51:16 -05:00
timewait_sock.h [PATCH] tcp: Cache inetpeer in timewait socket, and only when necessary. 2012-06-09 14:56:12 -07:00
transp_v6.h ipv6: rename datagram_send_ctl and datagram_recv_ctl 2013-01-31 13:53:08 -05:00
udp.h net/ipv6/udp: UDP encapsulation: introduce encap_rcv hook into IPv6 2012-04-28 22:21:51 -04:00
udplite.h net: ipv4: Standardize prefixes for message logging 2012-03-12 17:05:21 -07:00
wext.h
wimax.h net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
wpan-phy.h mac802154: monitor device support 2012-05-16 15:17:08 -04:00
x25.h net: cleanup unsigned to unsigned int 2012-04-15 12:44:40 -04:00
x25device.h
xfrm.h Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2013-02-14 13:29:20 -05:00