8d98efa84b
Phonet stack assumes the presence of Pipe Controller, either in Modem or on Application Processing Engine user-space for the Pipe data. Nokia Slim Modems like WG2.5 used in ST-Ericsson U8500 platform do not implement Pipe controller in them. This patch adds Pipe Controller implemenation to Phonet stack to support Pipe data over Phonet stack for Nokia Slim Modems. Signed-off-by: Kumar Sanghvi <kumar.sanghvi@stericsson.com> Acked-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: David S. Miller <davem@davemloft.net>
190 lines
4.3 KiB
C
190 lines
4.3 KiB
C
/*
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* File: pep.h
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*
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* Phonet Pipe End Point sockets definitions
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*
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* Copyright (C) 2008 Nokia Corporation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* version 2 as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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* 02110-1301 USA
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*/
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#ifndef NET_PHONET_PEP_H
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#define NET_PHONET_PEP_H
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struct pep_sock {
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struct pn_sock pn_sk;
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/* XXX: union-ify listening vs connected stuff ? */
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/* Listening socket stuff: */
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struct hlist_head ackq;
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struct hlist_head hlist;
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/* Connected socket stuff: */
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struct sock *listener;
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struct sk_buff_head ctrlreq_queue;
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#define PNPIPE_CTRLREQ_MAX 10
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atomic_t tx_credits;
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int ifindex;
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u16 peer_type; /* peer type/subtype */
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u8 pipe_handle;
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u8 rx_credits;
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u8 rx_fc; /* RX flow control */
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u8 tx_fc; /* TX flow control */
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u8 init_enable; /* auto-enable at creation */
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u8 aligned;
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#ifdef CONFIG_PHONET_PIPECTRLR
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u16 remote_pep;
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u8 pipe_state;
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#endif
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};
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static inline struct pep_sock *pep_sk(struct sock *sk)
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{
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return (struct pep_sock *)sk;
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}
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extern const struct proto_ops phonet_stream_ops;
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/* Pipe protocol definitions */
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struct pnpipehdr {
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u8 utid; /* transaction ID */
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u8 message_id;
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u8 pipe_handle;
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union {
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u8 state_after_connect; /* connect request */
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u8 state_after_reset; /* reset request */
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u8 error_code; /* any response */
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u8 pep_type; /* status indication */
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u8 data[1];
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};
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};
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#define other_pep_type data[1]
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static inline struct pnpipehdr *pnp_hdr(struct sk_buff *skb)
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{
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return (struct pnpipehdr *)skb_transport_header(skb);
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}
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#define MAX_PNPIPE_HEADER (MAX_PHONET_HEADER + 4)
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enum {
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PNS_PIPE_CREATE_REQ = 0x00,
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PNS_PIPE_CREATE_RESP,
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PNS_PIPE_REMOVE_REQ,
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PNS_PIPE_REMOVE_RESP,
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PNS_PIPE_DATA = 0x20,
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PNS_PIPE_ALIGNED_DATA,
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PNS_PEP_CONNECT_REQ = 0x40,
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PNS_PEP_CONNECT_RESP,
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PNS_PEP_DISCONNECT_REQ,
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PNS_PEP_DISCONNECT_RESP,
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PNS_PEP_RESET_REQ,
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PNS_PEP_RESET_RESP,
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PNS_PEP_ENABLE_REQ,
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PNS_PEP_ENABLE_RESP,
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PNS_PEP_CTRL_REQ,
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PNS_PEP_CTRL_RESP,
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PNS_PEP_DISABLE_REQ = 0x4C,
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PNS_PEP_DISABLE_RESP,
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PNS_PEP_STATUS_IND = 0x60,
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PNS_PIPE_CREATED_IND,
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PNS_PIPE_RESET_IND = 0x63,
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PNS_PIPE_ENABLED_IND,
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PNS_PIPE_REDIRECTED_IND,
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PNS_PIPE_DISABLED_IND = 0x66,
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};
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#define PN_PIPE_INVALID_HANDLE 0xff
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#define PN_PEP_TYPE_COMMON 0x00
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/* Phonet pipe status indication */
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enum {
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PN_PEP_IND_FLOW_CONTROL,
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PN_PEP_IND_ID_MCFC_GRANT_CREDITS,
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};
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/* Phonet pipe error codes */
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enum {
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PN_PIPE_NO_ERROR,
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PN_PIPE_ERR_INVALID_PARAM,
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PN_PIPE_ERR_INVALID_HANDLE,
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PN_PIPE_ERR_INVALID_CTRL_ID,
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PN_PIPE_ERR_NOT_ALLOWED,
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PN_PIPE_ERR_PEP_IN_USE,
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PN_PIPE_ERR_OVERLOAD,
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PN_PIPE_ERR_DEV_DISCONNECTED,
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PN_PIPE_ERR_TIMEOUT,
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PN_PIPE_ERR_ALL_PIPES_IN_USE,
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PN_PIPE_ERR_GENERAL,
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PN_PIPE_ERR_NOT_SUPPORTED,
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};
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/* Phonet pipe states */
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enum {
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PN_PIPE_DISABLE,
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PN_PIPE_ENABLE,
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};
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/* Phonet pipe sub-block types */
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enum {
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PN_PIPE_SB_CREATE_REQ_PEP_SUB_TYPE,
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PN_PIPE_SB_CONNECT_REQ_PEP_SUB_TYPE,
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PN_PIPE_SB_REDIRECT_REQ_PEP_SUB_TYPE,
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PN_PIPE_SB_NEGOTIATED_FC,
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PN_PIPE_SB_REQUIRED_FC_TX,
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PN_PIPE_SB_PREFERRED_FC_RX,
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PN_PIPE_SB_ALIGNED_DATA,
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};
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/* Phonet pipe flow control models */
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enum {
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PN_NO_FLOW_CONTROL,
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PN_LEGACY_FLOW_CONTROL,
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PN_ONE_CREDIT_FLOW_CONTROL,
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PN_MULTI_CREDIT_FLOW_CONTROL,
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};
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#define pn_flow_safe(fc) ((fc) >> 1)
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/* Phonet pipe flow control states */
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enum {
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PEP_IND_EMPTY,
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PEP_IND_BUSY,
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PEP_IND_READY,
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};
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#ifdef CONFIG_PHONET_PIPECTRLR
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#define PNS_PEP_CONNECT_UTID 0x02
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#define PNS_PIPE_CREATED_IND_UTID 0x04
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#define PNS_PIPE_ENABLE_UTID 0x0A
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#define PNS_PIPE_ENABLED_IND_UTID 0x0C
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#define PNS_PIPE_DISABLE_UTID 0x0F
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#define PNS_PIPE_DISABLED_IND_UTID 0x11
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#define PNS_PEP_DISCONNECT_UTID 0x06
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/* Used for tracking state of a pipe */
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enum {
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PIPE_IDLE,
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PIPE_DISABLED,
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PIPE_ENABLED,
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};
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#endif /* CONFIG_PHONET_PIPECTRLR */
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#endif
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