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1 /*************************************************************************** |
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2 * Linux PPP over L2TP (PPPoL2TP) Socket Implementation (RFC 2661) |
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3 * |
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4 * This file supplies definitions required by the PPP over L2TP driver |
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5 * (pppol2tp.c). All version information wrt this file is located in pppol2tp.c |
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6 * |
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7 * License: |
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8 * This program is free software; you can redistribute it and/or |
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9 * modify it under the terms of the GNU General Public License |
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10 * as published by the Free Software Foundation; either version |
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11 * 2 of the License, or (at your option) any later version. |
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12 * |
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13 */ |
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14 |
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15 #ifndef __LINUX_IF_PPPOL2TP_H |
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16 #define __LINUX_IF_PPPOL2TP_H |
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17 |
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18 #include <asm/types.h> |
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19 |
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20 #ifdef __KERNEL__ |
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21 #include <linux/in.h> |
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22 #endif |
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23 |
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24 /* Structure used to connect() the socket to a particular tunnel UDP |
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25 * socket. |
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26 */ |
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27 struct pppol2tp_addr |
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28 { |
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29 pid_t pid; /* pid that owns the fd. |
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30 * 0 => current */ |
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31 int fd; /* FD of UDP socket to use */ |
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32 |
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33 struct sockaddr_in addr; /* IP address and port to send to */ |
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34 |
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35 __u16 s_tunnel, s_session; /* For matching incoming packets */ |
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36 __u16 d_tunnel, d_session; /* For sending outgoing packets */ |
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37 }; |
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38 |
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39 /* Socket options: |
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40 * DEBUG - bitmask of debug message categories |
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41 * SENDSEQ - 0 => don't send packets with sequence numbers |
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42 * 1 => send packets with sequence numbers |
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43 * RECVSEQ - 0 => receive packet sequence numbers are optional |
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44 * 1 => drop receive packets without sequence numbers |
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45 * LNSMODE - 0 => act as LAC. |
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46 * 1 => act as LNS. |
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47 * REORDERTO - reorder timeout (in millisecs). If 0, don't try to reorder. |
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48 */ |
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49 enum { |
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50 PPPOL2TP_SO_DEBUG = 1, |
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51 PPPOL2TP_SO_RECVSEQ = 2, |
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52 PPPOL2TP_SO_SENDSEQ = 3, |
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53 PPPOL2TP_SO_LNSMODE = 4, |
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54 PPPOL2TP_SO_REORDERTO = 5, |
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55 }; |
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56 |
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57 /* Debug message categories for the DEBUG socket option */ |
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58 enum { |
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59 PPPOL2TP_MSG_DEBUG = (1 << 0), /* verbose debug (if |
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60 * compiled in) */ |
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61 PPPOL2TP_MSG_CONTROL = (1 << 1), /* userspace - kernel |
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62 * interface */ |
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63 PPPOL2TP_MSG_SEQ = (1 << 2), /* sequence numbers */ |
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64 PPPOL2TP_MSG_DATA = (1 << 3), /* data packets */ |
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65 }; |
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66 |
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67 |
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68 |
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69 #endif |