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Howard Chung 8828622fb9 Bluetooth: L2CAP: handle l2cap config request during open state 
[ Upstream commit 96298f6401 ]

According to Core Spec Version 5.2 | Vol 3, Part A 6.1.5,
the incoming L2CAP_ConfigReq should be handled during
OPEN state.

The section below shows the btmon trace when running
L2CAP/COS/CFD/BV-12-C before and after this change.

=== Before ===
...
> ACL Data RX: Handle 256 flags 0x02 dlen 12                #22
      L2CAP: Connection Request (0x02) ident 2 len 4
        PSM: 1 (0x0001)
        Source CID: 65
< ACL Data TX: Handle 256 flags 0x00 dlen 16                #23
      L2CAP: Connection Response (0x03) ident 2 len 8
        Destination CID: 64
        Source CID: 65
        Result: Connection successful (0x0000)
        Status: No further information available (0x0000)
< ACL Data TX: Handle 256 flags 0x00 dlen 12                #24
      L2CAP: Configure Request (0x04) ident 2 len 4
        Destination CID: 65
        Flags: 0x0000
> HCI Event: Number of Completed Packets (0x13) plen 5      #25
        Num handles: 1
        Handle: 256
        Count: 1
> HCI Event: Number of Completed Packets (0x13) plen 5      #26
        Num handles: 1
        Handle: 256
        Count: 1
> ACL Data RX: Handle 256 flags 0x02 dlen 16                #27
      L2CAP: Configure Request (0x04) ident 3 len 8
        Destination CID: 64
        Flags: 0x0000
        Option: Unknown (0x10) [hint]
        01 00                                            ..
< ACL Data TX: Handle 256 flags 0x00 dlen 18                #28
      L2CAP: Configure Response (0x05) ident 3 len 10
        Source CID: 65
        Flags: 0x0000
        Result: Success (0x0000)
        Option: Maximum Transmission Unit (0x01) [mandatory]
          MTU: 672
> HCI Event: Number of Completed Packets (0x13) plen 5      #29
        Num handles: 1
        Handle: 256
        Count: 1
> ACL Data RX: Handle 256 flags 0x02 dlen 14                #30
      L2CAP: Configure Response (0x05) ident 2 len 6
        Source CID: 64
        Flags: 0x0000
        Result: Success (0x0000)
> ACL Data RX: Handle 256 flags 0x02 dlen 20                #31
      L2CAP: Configure Request (0x04) ident 3 len 12
        Destination CID: 64
        Flags: 0x0000
        Option: Unknown (0x10) [hint]
        01 00 91 02 11 11                                ......
< ACL Data TX: Handle 256 flags 0x00 dlen 14                #32
      L2CAP: Command Reject (0x01) ident 3 len 6
        Reason: Invalid CID in request (0x0002)
        Destination CID: 64
        Source CID: 65
> HCI Event: Number of Completed Packets (0x13) plen 5      #33
        Num handles: 1
        Handle: 256
        Count: 1
...
=== After ===
...
> ACL Data RX: Handle 256 flags 0x02 dlen 12               #22
      L2CAP: Connection Request (0x02) ident 2 len 4
        PSM: 1 (0x0001)
        Source CID: 65
< ACL Data TX: Handle 256 flags 0x00 dlen 16               #23
      L2CAP: Connection Response (0x03) ident 2 len 8
        Destination CID: 64
        Source CID: 65
        Result: Connection successful (0x0000)
        Status: No further information available (0x0000)
< ACL Data TX: Handle 256 flags 0x00 dlen 12               #24
      L2CAP: Configure Request (0x04) ident 2 len 4
        Destination CID: 65
        Flags: 0x0000
> HCI Event: Number of Completed Packets (0x13) plen 5     #25
        Num handles: 1
        Handle: 256
        Count: 1
> HCI Event: Number of Completed Packets (0x13) plen 5     #26
        Num handles: 1
        Handle: 256
        Count: 1
> ACL Data RX: Handle 256 flags 0x02 dlen 16               #27
      L2CAP: Configure Request (0x04) ident 3 len 8
        Destination CID: 64
        Flags: 0x0000
        Option: Unknown (0x10) [hint]
        01 00                                            ..
< ACL Data TX: Handle 256 flags 0x00 dlen 18               #28
      L2CAP: Configure Response (0x05) ident 3 len 10
        Source CID: 65
        Flags: 0x0000
        Result: Success (0x0000)
        Option: Maximum Transmission Unit (0x01) [mandatory]
          MTU: 672
> HCI Event: Number of Completed Packets (0x13) plen 5     #29
        Num handles: 1
        Handle: 256
        Count: 1
> ACL Data RX: Handle 256 flags 0x02 dlen 14               #30
      L2CAP: Configure Response (0x05) ident 2 len 6
        Source CID: 64
        Flags: 0x0000
        Result: Success (0x0000)
> ACL Data RX: Handle 256 flags 0x02 dlen 20               #31
      L2CAP: Configure Request (0x04) ident 3 len 12
        Destination CID: 64
        Flags: 0x0000
        Option: Unknown (0x10) [hint]
        01 00 91 02 11 11                                .....
< ACL Data TX: Handle 256 flags 0x00 dlen 18               #32
      L2CAP: Configure Response (0x05) ident 3 len 10
        Source CID: 65
        Flags: 0x0000
        Result: Success (0x0000)
        Option: Maximum Transmission Unit (0x01) [mandatory]
          MTU: 672
< ACL Data TX: Handle 256 flags 0x00 dlen 12               #33
      L2CAP: Configure Request (0x04) ident 3 len 4
        Destination CID: 65
        Flags: 0x0000
> HCI Event: Number of Completed Packets (0x13) plen 5     #34
        Num handles: 1
        Handle: 256
        Count: 1
> HCI Event: Number of Completed Packets (0x13) plen 5     #35
        Num handles: 1
        Handle: 256
        Count: 1
...

Signed-off-by: Howard Chung <howardchung@google.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-10-01 13:14:37 +02:00
..
6lowpan 6lowpan: Off by one handling ->nexthdr 2020-01-27 14:50:41 +01:00
9p net/9p: validate fds in p9_fd_open 2020-08-11 15:32:32 +02:00
802
8021q vlan: vlan_changelink() should propagate errors 2020-01-12 12:17:28 +01:00
appletalk appletalk: Set error code if register_snap_client failed 2019-12-13 08:52:59 +01:00
atm net: use skb_queue_empty_lockless() in poll() handlers 2019-11-10 11:27:48 +01:00
ax25 AX.25: Prevent integer overflows in connect and sendmsg 2020-07-31 18:37:48 +02:00
batman-adv batman-adv: bla: use netif_rx_ni when not in interrupt context 2020-09-09 19:04:24 +02:00
bluetooth Bluetooth: L2CAP: handle l2cap config request during open state 2020-10-01 13:14:37 +02:00
bpf bpf/test_run: support cgroup local storage 2018-08-03 00:47:32 +02:00
bpfilter signal/bpfilter: Fix bpfilter_kernl to use send_sig not force_sig 2020-01-27 14:50:51 +01:00
bridge net: bridge: enfore alignment for ethernet address 2020-06-30 23:17:03 -04:00
caif net: use skb_queue_empty_lockless() in poll() handlers 2019-11-10 11:27:48 +01:00
can can: gw: Fix error path of cgw_module_init 2019-08-29 08:28:30 +02:00
ceph libceph: don't omit recovery_deletes in target_copy() 2020-07-22 09:32:13 +02:00
core neigh_stat_seq_next() should increase position index 2020-10-01 13:14:29 +02:00
dcb net: DCB: Validate DCB_ATTR_DCB_BUFFER argument 2020-09-26 18:01:29 +02:00
dccp net: ipv6: add net argument to ip6_dst_lookup_flow 2020-04-29 16:31:16 +02:00
decnet net: add bool confirm_neigh parameter for dst_ops.update_pmtu 2020-01-04 19:13:37 +01:00
dns_resolver KEYS: Don't write out to userspace while holding key semaphore 2020-04-23 10:30:24 +02:00
dsa dsa: Allow forwarding of redirected IGMP traffic 2020-09-23 12:10:56 +02:00
ethernet net: add annotations on hh->hh_len lockless accesses 2020-01-09 10:19:09 +01:00
hsr hsr: check protocol version in hsr_newlink() 2020-04-21 09:03:03 +02:00
ieee802154 nl802154: add missing attribute validation for dev_type 2020-03-18 07:14:15 +01:00
ife
ipv4 rt_cpu_seq_next should increase position index 2020-10-01 13:14:29 +02:00
ipv6 ipv6_route_seq_next should increase position index 2020-10-01 13:14:29 +02:00
iucv net/af_iucv: always register net_device notifier 2020-01-27 14:50:56 +01:00
kcm kcm: switch order of device registration to fix a crash 2019-04-17 08:38:40 +02:00
key af_key: pfkey_dump needs parameter validation 2020-09-26 18:01:28 +02:00
l2tp l2tp: remove skb_dst_set() from l2tp_xmit_skb() 2020-07-22 09:31:59 +02:00
l3mdev
lapb lapb: fixed leak of control-blocks. 2019-06-22 08:15:13 +02:00
llc net: silence data-races on sk_backlog.tail 2020-10-01 13:14:26 +02:00
mac80211 mac80211: fix misplaced while instead of if 2020-08-21 11:05:32 +02:00
mac802154 net: mac802154: tx: expand tailroom if necessary 2018-08-06 11:21:37 +02:00
mpls net: ipv6_stub: use ip6_dst_lookup_flow instead of ip6_dst_lookup 2020-04-29 16:31:17 +02:00
ncsi net/ncsi: Fixup .dumpit message flags and ID check in Netlink handler 2018-08-22 21:39:08 -07:00
netfilter netfilter: conntrack: allow sctp hearbeat after connection re-use 2020-09-17 13:45:24 +02:00
netlabel netlabel: fix problems with mapping removal 2020-09-12 13:40:22 +02:00
netlink genetlink: remove genl_bind 2020-07-22 09:31:58 +02:00
netrom net: netrom: Fix potential nr_neigh refcnt leak in nr_add_node 2020-04-29 16:31:21 +02:00
nfc net/nfc/rawsock.c: add CAP_NET_RAW check. 2020-08-19 08:15:03 +02:00
nsh
openvswitch openvswitch: Prevent kernel-infoleak in ovs_ct_put_key() 2020-08-11 15:32:35 +02:00
packet af_packet: TPACKET_V3: fix fill status rwlock imbalance 2020-08-19 08:15:03 +02:00
phonet net: use skb_queue_empty_lockless() in poll() handlers 2019-11-10 11:27:48 +01:00
psample net: psample: fix skb_over_panic 2019-12-05 09:21:30 +01:00
qrtr net: qrtr: check skb_put_padto() return value 2020-09-26 18:01:30 +02:00
rds rds: Prevent kernel-infoleak in rds_notify_queue_get() 2020-08-05 10:06:01 +02:00
rfkill rfkill: Fix incorrect check to avoid NULL pointer dereference 2020-01-12 12:17:17 +01:00
rose net/rose: fix unbound loop in rose_loopback_timer() 2019-05-02 09:59:00 +02:00
rxrpc rxrpc: Fix race between recvmsg and sendmsg on immediate call failure 2020-08-11 15:32:35 +02:00
sched net: sch_generic: aviod concurrent reset and enqueue op for lockless qdisc 2020-09-26 18:01:30 +02:00
sctp sctp: move trace_sctp_probe_path into sctp_outq_sack 2020-10-01 13:14:30 +02:00
smc net/smc: Prevent kernel-infoleak in __smc_diag_dump() 2020-09-03 11:24:17 +02:00
strparser net: strparser: partially revert "strparser: Call skb_unclone conditionally" 2019-05-16 19:41:27 +02:00
sunrpc SUNRPC: stop printk reading past end of string 2020-09-23 12:10:58 +02:00
switchdev
tipc tipc: use skb_unshare() instead in tipc_buf_append() 2020-09-26 18:01:30 +02:00
tls net/tls: Fix kmap usage 2020-08-19 08:15:03 +02:00
unix skbuff: fix a data race in skb_queue_len() 2020-10-01 13:14:32 +02:00
vmw_vsock vsock: fix timeout in vsock_accept() 2020-06-10 21:34:59 +02:00
wimax
wireless cfg80211: regulatory: reject invalid hints 2020-09-09 19:04:32 +02:00
x25 net/x25: Fix null-ptr-deref in x25_disconnect 2020-08-05 10:06:02 +02:00
xdp xdp: Fix xsk_generic_xmit errno 2020-06-25 15:33:05 +02:00
xfrm xfrm: Fix double ESP trailer insertion in IPsec crypto offload. 2020-06-30 23:17:10 -04:00
compat.c net/compat: Add missing sock updates for SCM_RIGHTS 2020-08-21 11:05:32 +02:00
Kconfig
Makefile
socket.c net: Set fput_needed iff FDPUT_FPUT is set 2020-08-19 08:15:03 +02:00
sysctl_net.c