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author | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-01 21:08:52 (GMT) |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-05-01 21:08:52 (GMT) |
commit | 73287a43cc79ca06629a88d1a199cd283f42456a (patch) | |
tree | acf4456e260115bea77ee31a29f10ce17f0db45c /net/nfc/llcp.h | |
parent | 251df49db3327c64bf917bfdba94491fde2b4ee0 (diff) | |
parent | 20074f357da4a637430aec2879c9d864c5d2c23c (diff) | |
download | linux-fsl-qoriq-73287a43cc79ca06629a88d1a199cd283f42456a.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
Pull networking updates from David Miller:
"Highlights (1721 non-merge commits, this has to be a record of some
sort):
1) Add 'random' mode to team driver, from Jiri Pirko and Eric
Dumazet.
2) Make it so that any driver that supports configuration of multiple
MAC addresses can provide the forwarding database add and del
calls by providing a default implementation and hooking that up if
the driver doesn't have an explicit set of handlers. From Vlad
Yasevich.
3) Support GSO segmentation over tunnels and other encapsulating
devices such as VXLAN, from Pravin B Shelar.
4) Support L2 GRE tunnels in the flow dissector, from Michael Dalton.
5) Implement Tail Loss Probe (TLP) detection in TCP, from Nandita
Dukkipati.
6) In the PHY layer, allow supporting wake-on-lan in situations where
the PHY registers have to be written for it to be configured.
Use it to support wake-on-lan in mv643xx_eth.
From Michael Stapelberg.
7) Significantly improve firewire IPV6 support, from YOSHIFUJI
Hideaki.
8) Allow multiple packets to be sent in a single transmission using
network coding in batman-adv, from Martin Hundebøll.
9) Add support for T5 cxgb4 chips, from Santosh Rastapur.
10) Generalize the VXLAN forwarding tables so that there is more
flexibility in configurating various aspects of the endpoints.
From David Stevens.
11) Support RSS and TSO in hardware over GRE tunnels in bxn2x driver,
from Dmitry Kravkov.
12) Zero copy support in nfnelink_queue, from Eric Dumazet and Pablo
Neira Ayuso.
13) Start adding networking selftests.
14) In situations of overload on the same AF_PACKET fanout socket, or
per-cpu packet receive queue, minimize drop by distributing the
load to other cpus/fanouts. From Willem de Bruijn and Eric
Dumazet.
15) Add support for new payload offset BPF instruction, from Daniel
Borkmann.
16) Convert several drivers over to mdoule_platform_driver(), from
Sachin Kamat.
17) Provide a minimal BPF JIT image disassembler userspace tool, from
Daniel Borkmann.
18) Rewrite F-RTO implementation in TCP to match the final
specification of it in RFC4138 and RFC5682. From Yuchung Cheng.
19) Provide netlink socket diag of netlink sockets ("Yo dawg, I hear
you like netlink, so I implemented netlink dumping of netlink
sockets.") From Andrey Vagin.
20) Remove ugly passing of rtnetlink attributes into rtnl_doit
functions, from Thomas Graf.
21) Allow userspace to be able to see if a configuration change occurs
in the middle of an address or device list dump, from Nicolas
Dichtel.
22) Support RFC3168 ECN protection for ipv6 fragments, from Hannes
Frederic Sowa.
23) Increase accuracy of packet length used by packet scheduler, from
Jason Wang.
24) Beginning set of changes to make ipv4/ipv6 fragment handling more
scalable and less susceptible to overload and locking contention,
from Jesper Dangaard Brouer.
25) Get rid of using non-type-safe NLMSG_* macros and use nlmsg_*()
instead. From Hong Zhiguo.
26) Optimize route usage in IPVS by avoiding reference counting where
possible, from Julian Anastasov.
27) Convert IPVS schedulers to RCU, also from Julian Anastasov.
28) Support cpu fanouts in xt_NFQUEUE netfilter target, from Holger
Eitzenberger.
29) Network namespace support for nf_log, ebt_log, xt_LOG, ipt_ULOG,
nfnetlink_log, and nfnetlink_queue. From Gao feng.
30) Implement RFC3168 ECN protection, from Hannes Frederic Sowa.
31) Support several new r8169 chips, from Hayes Wang.
32) Support tokenized interface identifiers in ipv6, from Daniel
Borkmann.
33) Use usbnet_link_change() helper in USB net driver, from Ming Lei.
34) Add 802.1ad vlan offload support, from Patrick McHardy.
35) Support mmap() based netlink communication, also from Patrick
McHardy.
36) Support HW timestamping in mlx4 driver, from Amir Vadai.
37) Rationalize AF_PACKET packet timestamping when transmitting, from
Willem de Bruijn and Daniel Borkmann.
38) Bring parity to what's provided by /proc/net/packet socket dumping
and the info provided by netlink socket dumping of AF_PACKET
sockets. From Nicolas Dichtel.
39) Fix peeking beyond zero sized SKBs in AF_UNIX, from Benjamin
Poirier"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1722 commits)
filter: fix va_list build error
af_unix: fix a fatal race with bit fields
bnx2x: Prevent memory leak when cnic is absent
bnx2x: correct reading of speed capabilities
net: sctp: attribute printl with __printf for gcc fmt checks
netlink: kconfig: move mmap i/o into netlink kconfig
netpoll: convert mutex into a semaphore
netlink: Fix skb ref counting.
net_sched: act_ipt forward compat with xtables
mlx4_en: fix a build error on 32bit arches
Revert "bnx2x: allow nvram test to run when device is down"
bridge: avoid OOPS if root port not found
drivers: net: cpsw: fix kernel warn on cpsw irq enable
sh_eth: use random MAC address if no valid one supplied
3c509.c: call SET_NETDEV_DEV for all device types (ISA/ISAPnP/EISA)
tg3: fix to append hardware time stamping flags
unix/stream: fix peeking with an offset larger than data in queue
unix/dgram: fix peeking with an offset larger than data in queue
unix/dgram: peek beyond 0-sized skbs
openvswitch: Remove unneeded ovs_netdev_get_ifindex()
...
Diffstat (limited to 'net/nfc/llcp.h')
-rw-r--r-- | net/nfc/llcp.h | 267 |
1 files changed, 267 insertions, 0 deletions
diff --git a/net/nfc/llcp.h b/net/nfc/llcp.h new file mode 100644 index 0000000..ff8c434 --- /dev/null +++ b/net/nfc/llcp.h @@ -0,0 +1,267 @@ +/* + * Copyright (C) 2011 Intel Corporation. All rights reserved. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the + * Free Software Foundation, Inc., + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. + */ + +enum llcp_state { + LLCP_CONNECTED = 1, /* wait_for_packet() wants that */ + LLCP_CLOSED, + LLCP_BOUND, + LLCP_LISTEN, +}; + +#define LLCP_DEFAULT_LTO 100 +#define LLCP_DEFAULT_RW 1 +#define LLCP_DEFAULT_MIU 128 + +#define LLCP_MAX_LTO 0xff +#define LLCP_MAX_RW 15 +#define LLCP_MAX_MIUX 0x7ff +#define LLCP_MAX_MIU (LLCP_MAX_MIUX + 128) + +#define LLCP_WKS_NUM_SAP 16 +#define LLCP_SDP_NUM_SAP 16 +#define LLCP_LOCAL_NUM_SAP 32 +#define LLCP_LOCAL_SAP_OFFSET (LLCP_WKS_NUM_SAP + LLCP_SDP_NUM_SAP) +#define LLCP_MAX_SAP (LLCP_WKS_NUM_SAP + LLCP_SDP_NUM_SAP + LLCP_LOCAL_NUM_SAP) +#define LLCP_SDP_UNBOUND (LLCP_MAX_SAP + 1) + +struct nfc_llcp_sock; + +struct llcp_sock_list { + struct hlist_head head; + rwlock_t lock; +}; + +struct nfc_llcp_sdp_tlv { + u8 *tlv; + u8 tlv_len; + + char *uri; + u8 tid; + u8 sap; + + unsigned long time; + + struct hlist_node node; +}; + +struct nfc_llcp_local { + struct list_head list; + struct nfc_dev *dev; + + struct kref ref; + + struct mutex sdp_lock; + + struct timer_list link_timer; + struct sk_buff_head tx_queue; + struct work_struct tx_work; + struct work_struct rx_work; + struct sk_buff *rx_pending; + struct work_struct timeout_work; + + u32 target_idx; + u8 rf_mode; + u8 comm_mode; + u8 lto; + u8 rw; + __be16 miux; + unsigned long local_wks; /* Well known services */ + unsigned long local_sdp; /* Local services */ + unsigned long local_sap; /* Local SAPs, not available for discovery */ + atomic_t local_sdp_cnt[LLCP_SDP_NUM_SAP]; + + /* local */ + u8 gb[NFC_MAX_GT_LEN]; + u8 gb_len; + + /* remote */ + u8 remote_gb[NFC_MAX_GT_LEN]; + u8 remote_gb_len; + + u8 remote_version; + u16 remote_miu; + u16 remote_lto; + u8 remote_opt; + u16 remote_wks; + + struct mutex sdreq_lock; + struct hlist_head pending_sdreqs; + struct timer_list sdreq_timer; + struct work_struct sdreq_timeout_work; + u8 sdreq_next_tid; + + /* sockets array */ + struct llcp_sock_list sockets; + struct llcp_sock_list connecting_sockets; + struct llcp_sock_list raw_sockets; +}; + +struct nfc_llcp_sock { + struct sock sk; + struct nfc_dev *dev; + struct nfc_llcp_local *local; + u32 target_idx; + u32 nfc_protocol; + + /* Link parameters */ + u8 ssap; + u8 dsap; + char *service_name; + size_t service_name_len; + u8 rw; + __be16 miux; + + + /* Remote link parameters */ + u8 remote_rw; + u16 remote_miu; + + /* Link variables */ + u8 send_n; + u8 send_ack_n; + u8 recv_n; + u8 recv_ack_n; + + /* Is the remote peer ready to receive */ + u8 remote_ready; + + /* Reserved source SAP */ + u8 reserved_ssap; + + struct sk_buff_head tx_queue; + struct sk_buff_head tx_pending_queue; + + struct list_head accept_queue; + struct sock *parent; +}; + +struct nfc_llcp_ui_cb { + __u8 dsap; + __u8 ssap; +}; + +#define nfc_llcp_ui_skb_cb(__skb) ((struct nfc_llcp_ui_cb *)&((__skb)->cb[0])) + +#define nfc_llcp_sock(sk) ((struct nfc_llcp_sock *) (sk)) +#define nfc_llcp_dev(sk) (nfc_llcp_sock((sk))->dev) + +#define LLCP_HEADER_SIZE 2 +#define LLCP_SEQUENCE_SIZE 1 +#define LLCP_AGF_PDU_HEADER_SIZE 2 + +/* LLCP versions: 1.1 is 1.0 plus SDP */ +#define LLCP_VERSION_10 0x10 +#define LLCP_VERSION_11 0x11 + +/* LLCP PDU types */ +#define LLCP_PDU_SYMM 0x0 +#define LLCP_PDU_PAX 0x1 +#define LLCP_PDU_AGF 0x2 +#define LLCP_PDU_UI 0x3 +#define LLCP_PDU_CONNECT 0x4 +#define LLCP_PDU_DISC 0x5 +#define LLCP_PDU_CC 0x6 +#define LLCP_PDU_DM 0x7 +#define LLCP_PDU_FRMR 0x8 +#define LLCP_PDU_SNL 0x9 +#define LLCP_PDU_I 0xc +#define LLCP_PDU_RR 0xd +#define LLCP_PDU_RNR 0xe + +/* Parameters TLV types */ +#define LLCP_TLV_VERSION 0x1 +#define LLCP_TLV_MIUX 0x2 +#define LLCP_TLV_WKS 0x3 +#define LLCP_TLV_LTO 0x4 +#define LLCP_TLV_RW 0x5 +#define LLCP_TLV_SN 0x6 +#define LLCP_TLV_OPT 0x7 +#define LLCP_TLV_SDREQ 0x8 +#define LLCP_TLV_SDRES 0x9 +#define LLCP_TLV_MAX 0xa + +/* Well known LLCP SAP */ +#define LLCP_SAP_SDP 0x1 +#define LLCP_SAP_IP 0x2 +#define LLCP_SAP_OBEX 0x3 +#define LLCP_SAP_SNEP 0x4 +#define LLCP_SAP_MAX 0xff + +/* Disconnection reason code */ +#define LLCP_DM_DISC 0x00 +#define LLCP_DM_NOCONN 0x01 +#define LLCP_DM_NOBOUND 0x02 +#define LLCP_DM_REJ 0x03 + + +void nfc_llcp_sock_link(struct llcp_sock_list *l, struct sock *s); +void nfc_llcp_sock_unlink(struct llcp_sock_list *l, struct sock *s); +void nfc_llcp_socket_remote_param_init(struct nfc_llcp_sock *sock); +struct nfc_llcp_local *nfc_llcp_find_local(struct nfc_dev *dev); +struct nfc_llcp_local *nfc_llcp_local_get(struct nfc_llcp_local *local); +int nfc_llcp_local_put(struct nfc_llcp_local *local); +u8 nfc_llcp_get_sdp_ssap(struct nfc_llcp_local *local, + struct nfc_llcp_sock *sock); +u8 nfc_llcp_get_local_ssap(struct nfc_llcp_local *local); +void nfc_llcp_put_ssap(struct nfc_llcp_local *local, u8 ssap); +int nfc_llcp_queue_i_frames(struct nfc_llcp_sock *sock); +void nfc_llcp_send_to_raw_sock(struct nfc_llcp_local *local, + struct sk_buff *skb, u8 direction); + +/* Sock API */ +struct sock *nfc_llcp_sock_alloc(struct socket *sock, int type, gfp_t gfp); +void nfc_llcp_sock_free(struct nfc_llcp_sock *sock); +void nfc_llcp_accept_unlink(struct sock *sk); +void nfc_llcp_accept_enqueue(struct sock *parent, struct sock *sk); +struct sock *nfc_llcp_accept_dequeue(struct sock *sk, struct socket *newsock); + +/* TLV API */ +int nfc_llcp_parse_gb_tlv(struct nfc_llcp_local *local, + u8 *tlv_array, u16 tlv_array_len); +int nfc_llcp_parse_connection_tlv(struct nfc_llcp_sock *sock, + u8 *tlv_array, u16 tlv_array_len); + +/* Commands API */ +void nfc_llcp_recv(void *data, struct sk_buff *skb, int err); +u8 *nfc_llcp_build_tlv(u8 type, u8 *value, u8 value_length, u8 *tlv_length); +struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdres_tlv(u8 tid, u8 sap); +struct nfc_llcp_sdp_tlv *nfc_llcp_build_sdreq_tlv(u8 tid, char *uri, + size_t uri_len); +void nfc_llcp_free_sdp_tlv(struct nfc_llcp_sdp_tlv *sdp); +void nfc_llcp_free_sdp_tlv_list(struct hlist_head *sdp_head); +void nfc_llcp_recv(void *data, struct sk_buff *skb, int err); +int nfc_llcp_disconnect(struct nfc_llcp_sock *sock); +int nfc_llcp_send_symm(struct nfc_dev *dev); +int nfc_llcp_send_connect(struct nfc_llcp_sock *sock); +int nfc_llcp_send_cc(struct nfc_llcp_sock *sock); +int nfc_llcp_send_snl_sdres(struct nfc_llcp_local *local, + struct hlist_head *tlv_list, size_t tlvs_len); +int nfc_llcp_send_snl_sdreq(struct nfc_llcp_local *local, + struct hlist_head *tlv_list, size_t tlvs_len); +int nfc_llcp_send_dm(struct nfc_llcp_local *local, u8 ssap, u8 dsap, u8 reason); +int nfc_llcp_send_disconnect(struct nfc_llcp_sock *sock); +int nfc_llcp_send_i_frame(struct nfc_llcp_sock *sock, + struct msghdr *msg, size_t len); +int nfc_llcp_send_ui_frame(struct nfc_llcp_sock *sock, u8 ssap, u8 dsap, + struct msghdr *msg, size_t len); +int nfc_llcp_send_rr(struct nfc_llcp_sock *sock); + +/* Socket API */ +int __init nfc_llcp_sock_init(void); +void nfc_llcp_sock_exit(void); |