![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to tap-solaris.c CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Qemu by Fabrice Bellard] / qemu / net|
Return to tap-solaris.c CVS log | Up to [Qemu by Fabrice Bellard] / qemu / net |
1.1 root 1: /*
2: * QEMU System Emulator
3: *
4: * Copyright (c) 2003-2008 Fabrice Bellard
5: *
6: * Permission is hereby granted, free of charge, to any person obtaining a copy
7: * of this software and associated documentation files (the "Software"), to deal
8: * in the Software without restriction, including without limitation the rights
9: * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10: * copies of the Software, and to permit persons to whom the Software is
11: * furnished to do so, subject to the following conditions:
12: *
13: * The above copyright notice and this permission notice shall be included in
14: * all copies or substantial portions of the Software.
15: *
16: * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17: * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19: * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20: * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21: * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22: * THE SOFTWARE.
23: */
24:
25: #include "net/tap.h"
1.1.1.2 root 26: #include "sysemu.h"
1.1 root 27:
28: #include <sys/stat.h>
29: #include <sys/ethernet.h>
30: #include <sys/sockio.h>
31: #include <netinet/arp.h>
32: #include <netinet/in.h>
33: #include <netinet/in_systm.h>
34: #include <netinet/ip.h>
35: #include <netinet/ip_icmp.h> // must come after ip.h
36: #include <netinet/udp.h>
37: #include <netinet/tcp.h>
38: #include <net/if.h>
39: #include <syslog.h>
40: #include <stropts.h>
1.1.1.3 root 41: #include "qemu-error.h"
1.1 root 42:
43: ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
44: {
45: struct strbuf sbuf;
46: int f = 0;
47:
48: sbuf.maxlen = maxlen;
49: sbuf.buf = (char *)buf;
50:
51: return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
52: }
53:
54: #define TUNNEWPPA (('T'<<16) | 0x0001)
55: /*
56: * Allocate TAP device, returns opened fd.
57: * Stores dev name in the first arg(must be large enough).
58: */
59: static int tap_alloc(char *dev, size_t dev_size)
60: {
61: int tap_fd, if_fd, ppa = -1;
62: static int ip_fd = 0;
63: char *ptr;
64:
65: static int arp_fd = 0;
66: int ip_muxid, arp_muxid;
67: struct strioctl strioc_if, strioc_ppa;
1.1.1.4 ! root 68: int link_type = I_PLINK;
1.1 root 69: struct lifreq ifr;
70: char actual_name[32] = "";
71:
72: memset(&ifr, 0x0, sizeof(ifr));
73:
74: if( *dev ){
75: ptr = dev;
76: while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
77: ppa = atoi(ptr);
78: }
79:
80: /* Check if IP device was opened */
81: if( ip_fd )
82: close(ip_fd);
83:
84: TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
85: if (ip_fd < 0) {
86: syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
87: return -1;
88: }
89:
90: TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
91: if (tap_fd < 0) {
92: syslog(LOG_ERR, "Can't open /dev/tap");
93: return -1;
94: }
95:
96: /* Assign a new PPA and get its unit number. */
97: strioc_ppa.ic_cmd = TUNNEWPPA;
98: strioc_ppa.ic_timout = 0;
99: strioc_ppa.ic_len = sizeof(ppa);
100: strioc_ppa.ic_dp = (char *)&ppa;
101: if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
102: syslog (LOG_ERR, "Can't assign new interface");
103:
104: TFR(if_fd = open("/dev/tap", O_RDWR, 0));
105: if (if_fd < 0) {
106: syslog(LOG_ERR, "Can't open /dev/tap (2)");
107: return -1;
108: }
109: if(ioctl(if_fd, I_PUSH, "ip") < 0){
110: syslog(LOG_ERR, "Can't push IP module");
111: return -1;
112: }
113:
114: if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
115: syslog(LOG_ERR, "Can't get flags\n");
116:
117: snprintf (actual_name, 32, "tap%d", ppa);
118: pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
119:
120: ifr.lifr_ppa = ppa;
121: /* Assign ppa according to the unit number returned by tun device */
122:
123: if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
124: syslog (LOG_ERR, "Can't set PPA %d", ppa);
125: if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
126: syslog (LOG_ERR, "Can't get flags\n");
127: /* Push arp module to if_fd */
128: if (ioctl (if_fd, I_PUSH, "arp") < 0)
129: syslog (LOG_ERR, "Can't push ARP module (2)");
130:
131: /* Push arp module to ip_fd */
132: if (ioctl (ip_fd, I_POP, NULL) < 0)
133: syslog (LOG_ERR, "I_POP failed\n");
134: if (ioctl (ip_fd, I_PUSH, "arp") < 0)
135: syslog (LOG_ERR, "Can't push ARP module (3)\n");
136: /* Open arp_fd */
137: TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
138: if (arp_fd < 0)
139: syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
140:
141: /* Set ifname to arp */
142: strioc_if.ic_cmd = SIOCSLIFNAME;
143: strioc_if.ic_timout = 0;
144: strioc_if.ic_len = sizeof(ifr);
145: strioc_if.ic_dp = (char *)𝔦
146: if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
147: syslog (LOG_ERR, "Can't set ifname to arp\n");
148: }
149:
150: if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
151: syslog(LOG_ERR, "Can't link TAP device to IP");
152: return -1;
153: }
154:
155: if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
156: syslog (LOG_ERR, "Can't link TAP device to ARP");
157:
158: close (if_fd);
159:
160: memset(&ifr, 0x0, sizeof(ifr));
161: pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
162: ifr.lifr_ip_muxid = ip_muxid;
163: ifr.lifr_arp_muxid = arp_muxid;
164:
165: if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
166: {
167: ioctl (ip_fd, I_PUNLINK , arp_muxid);
168: ioctl (ip_fd, I_PUNLINK, ip_muxid);
169: syslog (LOG_ERR, "Can't set multiplexor id");
170: }
171:
172: snprintf(dev, dev_size, "tap%d", ppa);
173: return tap_fd;
174: }
175:
176: int tap_open(char *ifname, int ifname_size, int *vnet_hdr, int vnet_hdr_required)
177: {
178: char dev[10]="";
179: int fd;
180: if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
181: fprintf(stderr, "Cannot allocate TAP device\n");
182: return -1;
183: }
184: pstrcpy(ifname, ifname_size, dev);
185: if (*vnet_hdr) {
186: /* Solaris doesn't have IFF_VNET_HDR */
187: *vnet_hdr = 0;
188:
189: if (vnet_hdr_required && !*vnet_hdr) {
1.1.1.2 root 190: error_report("vnet_hdr=1 requested, but no kernel "
191: "support for IFF_VNET_HDR available");
1.1 root 192: close(fd);
193: return -1;
194: }
195: }
196: fcntl(fd, F_SETFL, O_NONBLOCK);
197: return fd;
198: }
199:
200: int tap_set_sndbuf(int fd, QemuOpts *opts)
201: {
202: return 0;
203: }
204:
205: int tap_probe_vnet_hdr(int fd)
206: {
207: return 0;
208: }
209:
210: int tap_probe_has_ufo(int fd)
211: {
212: return 0;
213: }
214:
1.1.1.3 root 215: int tap_probe_vnet_hdr_len(int fd, int len)
216: {
217: return 0;
218: }
219:
220: void tap_fd_set_vnet_hdr_len(int fd, int len)
221: {
222: }
223:
1.1 root 224: void tap_fd_set_offload(int fd, int csum, int tso4,
225: int tso6, int ecn, int ufo)
226: {
227: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.