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annotate rvinterf/lowlevel/pktfwd.c @ 871:a5c8f48003cd

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rvinterf: client programs can now selectively stop receiving packets of a particular RVTMUX type
author Space Falcon <falcon@ivan.Harhan.ORG>
date Fri, 29 May 2015 06:29:38 +0000
parents 2f285f20d617
children
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7ab6b29e76bb rvinterf: forwarding of Rx packets to clients implemented
Michael Spacefalcon <msokolov@ivan.Harhan.ORG>
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1 /*
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2 * This rvinterf module handles the forwarding of target->host packets
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3 * to clients connected via the local socket interface.
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4 */
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5
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6 #include <sys/types.h>
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7 #include <stdio.h>
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8 #include <string.h>
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9 #include <strings.h>
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10 #include <stdlib.h>
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11 #include <unistd.h>
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12 #include "../include/pktmux.h"
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13 #include "../include/localsock.h"
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14 #include "client.h"
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15
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16 extern u_char rxpkt[];
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17 extern size_t rxpkt_len;
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18
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19 extern struct client *client_head;
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20
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21 forward_pkt_to_client(cli)
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22 struct client *cli;
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23 {
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24 int len1;
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25 u_char hdr[3];
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26
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27 len1 = rxpkt_len + 1;
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28 hdr[0] = len1 >> 8;
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29 hdr[1] = len1 & 0xFF;
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30 hdr[2] = RVI2CLI_PKT_FROM_TARGET;
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31 write(cli->fd, hdr, 3);
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32 write(cli->fd, rxpkt, rxpkt_len);
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33 }
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34
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35 forward_rv_trace()
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36 {
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37 u32 useid;
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38 struct client *cli;
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39 int i, match;
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40
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41 useid = rxpkt[1] << 24 | rxpkt[2] << 16 | rxpkt[3] << 8 | rxpkt[4];
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42 for (cli = client_head; cli; cli = cli->next) {
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43 match = 0;
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44 for (i = 0; i < cli->int_rvt_count; i++)
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45 if ((useid & cli->int_rvt_mask[i]) ==
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46 cli->int_rvt_match[i]) {
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47 match = 1;
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48 break;
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49 }
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50 if (match)
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51 forward_pkt_to_client(cli);
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52 }
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53 }
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54
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55 forward_nonrvt_pkt()
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56 {
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57 struct client *cli;
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58
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59 for (cli = client_head; cli; cli = cli->next)
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60 if (cli->int_proto[rxpkt[0] - 0x12])
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61 forward_pkt_to_client(cli);
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62 }