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8f44fcc72a
* Do not fail if the peer supports more or less than 3 algorithms. * Ignore unknown congestion control algorithms instead of failing. * Simplify congestion algorithm negotiation (largest is best). * Do not use a static buffer. * Fix off-by-two read overflow. * Avoid extra memory copy (in addition to skb_copy_bits()). The previous code really made no sense. Signed-off-by: Rémi Denis-Courmont <remi.denis-courmont@nokia.com> Signed-off-by: David S. Miller <davem@davemloft.net>
170 lines
3.7 KiB
C
170 lines
3.7 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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};
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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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PN_MAX_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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#endif
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