mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-30 08:02:30 +00:00
be677730a0
GPRS TX flow control won't need to lock the underlying socket anymore. Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
160 lines
3.6 KiB
C
160 lines
3.6 KiB
C
/*
|
|
* File: pep.h
|
|
*
|
|
* Phonet Pipe End Point sockets definitions
|
|
*
|
|
* Copyright (C) 2008 Nokia Corporation.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* version 2 as published by the Free Software Foundation.
|
|
*
|
|
* 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., 51 Franklin St, Fifth Floor, Boston, MA
|
|
* 02110-1301 USA
|
|
*/
|
|
|
|
#ifndef NET_PHONET_PEP_H
|
|
#define NET_PHONET_PEP_H
|
|
|
|
struct pep_sock {
|
|
struct pn_sock pn_sk;
|
|
|
|
/* XXX: union-ify listening vs connected stuff ? */
|
|
/* Listening socket stuff: */
|
|
struct hlist_head ackq;
|
|
struct hlist_head hlist;
|
|
|
|
/* Connected socket stuff: */
|
|
struct sock *listener;
|
|
struct sk_buff_head ctrlreq_queue;
|
|
#define PNPIPE_CTRLREQ_MAX 10
|
|
atomic_t tx_credits;
|
|
int ifindex;
|
|
u16 peer_type; /* peer type/subtype */
|
|
u8 pipe_handle;
|
|
|
|
u8 rx_credits;
|
|
u8 rx_fc; /* RX flow control */
|
|
u8 tx_fc; /* TX flow control */
|
|
u8 init_enable; /* auto-enable at creation */
|
|
};
|
|
|
|
static inline struct pep_sock *pep_sk(struct sock *sk)
|
|
{
|
|
return (struct pep_sock *)sk;
|
|
}
|
|
|
|
extern const struct proto_ops phonet_stream_ops;
|
|
|
|
/* Pipe protocol definitions */
|
|
struct pnpipehdr {
|
|
u8 utid; /* transaction ID */
|
|
u8 message_id;
|
|
u8 pipe_handle;
|
|
union {
|
|
u8 state_after_connect; /* connect request */
|
|
u8 state_after_reset; /* reset request */
|
|
u8 error_code; /* any response */
|
|
u8 pep_type; /* status indication */
|
|
u8 data[1];
|
|
};
|
|
};
|
|
#define other_pep_type data[1]
|
|
|
|
static inline struct pnpipehdr *pnp_hdr(struct sk_buff *skb)
|
|
{
|
|
return (struct pnpipehdr *)skb_transport_header(skb);
|
|
}
|
|
|
|
#define MAX_PNPIPE_HEADER (MAX_PHONET_HEADER + 4)
|
|
|
|
enum {
|
|
PNS_PIPE_DATA = 0x20,
|
|
|
|
PNS_PEP_CONNECT_REQ = 0x40,
|
|
PNS_PEP_CONNECT_RESP,
|
|
PNS_PEP_DISCONNECT_REQ,
|
|
PNS_PEP_DISCONNECT_RESP,
|
|
PNS_PEP_RESET_REQ,
|
|
PNS_PEP_RESET_RESP,
|
|
PNS_PEP_ENABLE_REQ,
|
|
PNS_PEP_ENABLE_RESP,
|
|
PNS_PEP_CTRL_REQ,
|
|
PNS_PEP_CTRL_RESP,
|
|
PNS_PEP_DISABLE_REQ = 0x4C,
|
|
PNS_PEP_DISABLE_RESP,
|
|
|
|
PNS_PEP_STATUS_IND = 0x60,
|
|
PNS_PIPE_CREATED_IND,
|
|
PNS_PIPE_RESET_IND = 0x63,
|
|
PNS_PIPE_ENABLED_IND,
|
|
PNS_PIPE_REDIRECTED_IND,
|
|
PNS_PIPE_DISABLED_IND = 0x66,
|
|
};
|
|
|
|
#define PN_PIPE_INVALID_HANDLE 0xff
|
|
#define PN_PEP_TYPE_COMMON 0x00
|
|
|
|
/* Phonet pipe status indication */
|
|
enum {
|
|
PN_PEP_IND_FLOW_CONTROL,
|
|
PN_PEP_IND_ID_MCFC_GRANT_CREDITS,
|
|
};
|
|
|
|
/* Phonet pipe error codes */
|
|
enum {
|
|
PN_PIPE_NO_ERROR,
|
|
PN_PIPE_ERR_INVALID_PARAM,
|
|
PN_PIPE_ERR_INVALID_HANDLE,
|
|
PN_PIPE_ERR_INVALID_CTRL_ID,
|
|
PN_PIPE_ERR_NOT_ALLOWED,
|
|
PN_PIPE_ERR_PEP_IN_USE,
|
|
PN_PIPE_ERR_OVERLOAD,
|
|
PN_PIPE_ERR_DEV_DISCONNECTED,
|
|
PN_PIPE_ERR_TIMEOUT,
|
|
PN_PIPE_ERR_ALL_PIPES_IN_USE,
|
|
PN_PIPE_ERR_GENERAL,
|
|
PN_PIPE_ERR_NOT_SUPPORTED,
|
|
};
|
|
|
|
/* Phonet pipe states */
|
|
enum {
|
|
PN_PIPE_DISABLE,
|
|
PN_PIPE_ENABLE,
|
|
};
|
|
|
|
/* Phonet pipe sub-block types */
|
|
enum {
|
|
PN_PIPE_SB_CREATE_REQ_PEP_SUB_TYPE,
|
|
PN_PIPE_SB_CONNECT_REQ_PEP_SUB_TYPE,
|
|
PN_PIPE_SB_REDIRECT_REQ_PEP_SUB_TYPE,
|
|
PN_PIPE_SB_NEGOTIATED_FC,
|
|
PN_PIPE_SB_REQUIRED_FC_TX,
|
|
PN_PIPE_SB_PREFERRED_FC_RX,
|
|
};
|
|
|
|
/* Phonet pipe flow control models */
|
|
enum {
|
|
PN_NO_FLOW_CONTROL,
|
|
PN_LEGACY_FLOW_CONTROL,
|
|
PN_ONE_CREDIT_FLOW_CONTROL,
|
|
PN_MULTI_CREDIT_FLOW_CONTROL,
|
|
};
|
|
|
|
#define pn_flow_safe(fc) ((fc) >> 1)
|
|
|
|
/* Phonet pipe flow control states */
|
|
enum {
|
|
PEP_IND_EMPTY,
|
|
PEP_IND_BUSY,
|
|
PEP_IND_READY,
|
|
};
|
|
|
|
#endif
|