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authorMark McLoughlin <markmc@redhat.com>2009-10-22 17:49:09 +0100
committerAnthony Liguori <aliguori@us.ibm.com>2009-10-30 08:39:27 -0500
commit966ea5ec4fb14d4b420715e7aadc5dfd3ea5add2 (patch)
tree86989beac1be57a9acc71ede7d2e2a75b806c128 /net/tap-solaris.c
parente7e92325d92843aaa022000aacb9602d3a6ad986 (diff)
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net: move solaris code to net/tap-solaris.c
Signed-off-by: Mark McLoughlin <markmc@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'net/tap-solaris.c')
-rw-r--r--net/tap-solaris.c185
1 files changed, 185 insertions, 0 deletions
diff --git a/net/tap-solaris.c b/net/tap-solaris.c
new file mode 100644
index 0000000..0dd5b68
--- /dev/null
+++ b/net/tap-solaris.c
@@ -0,0 +1,185 @@
+/*
+ * QEMU System Emulator
+ *
+ * Copyright (c) 2003-2008 Fabrice Bellard
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+#include "net/tap.h"
+
+#include <sys/stat.h>
+#include <sys/ethernet.h>
+#include <sys/sockio.h>
+#include <netinet/arp.h>
+#include <netinet/in.h>
+#include <netinet/in_systm.h>
+#include <netinet/ip.h>
+#include <netinet/ip_icmp.h> // must come after ip.h
+#include <netinet/udp.h>
+#include <netinet/tcp.h>
+#include <net/if.h>
+#include <syslog.h>
+#include <stropts.h>
+
+ssize_t tap_read_packet(int tapfd, uint8_t *buf, int maxlen)
+{
+ struct strbuf sbuf;
+ int f = 0;
+
+ sbuf.maxlen = maxlen;
+ sbuf.buf = (char *)buf;
+
+ return getmsg(tapfd, NULL, &sbuf, &f) >= 0 ? sbuf.len : -1;
+}
+
+#define TUNNEWPPA (('T'<<16) | 0x0001)
+/*
+ * Allocate TAP device, returns opened fd.
+ * Stores dev name in the first arg(must be large enough).
+ */
+static int tap_alloc(char *dev, size_t dev_size)
+{
+ int tap_fd, if_fd, ppa = -1;
+ static int ip_fd = 0;
+ char *ptr;
+
+ static int arp_fd = 0;
+ int ip_muxid, arp_muxid;
+ struct strioctl strioc_if, strioc_ppa;
+ int link_type = I_PLINK;;
+ struct lifreq ifr;
+ char actual_name[32] = "";
+
+ memset(&ifr, 0x0, sizeof(ifr));
+
+ if( *dev ){
+ ptr = dev;
+ while( *ptr && !qemu_isdigit((int)*ptr) ) ptr++;
+ ppa = atoi(ptr);
+ }
+
+ /* Check if IP device was opened */
+ if( ip_fd )
+ close(ip_fd);
+
+ TFR(ip_fd = open("/dev/udp", O_RDWR, 0));
+ if (ip_fd < 0) {
+ syslog(LOG_ERR, "Can't open /dev/ip (actually /dev/udp)");
+ return -1;
+ }
+
+ TFR(tap_fd = open("/dev/tap", O_RDWR, 0));
+ if (tap_fd < 0) {
+ syslog(LOG_ERR, "Can't open /dev/tap");
+ return -1;
+ }
+
+ /* Assign a new PPA and get its unit number. */
+ strioc_ppa.ic_cmd = TUNNEWPPA;
+ strioc_ppa.ic_timout = 0;
+ strioc_ppa.ic_len = sizeof(ppa);
+ strioc_ppa.ic_dp = (char *)&ppa;
+ if ((ppa = ioctl (tap_fd, I_STR, &strioc_ppa)) < 0)
+ syslog (LOG_ERR, "Can't assign new interface");
+
+ TFR(if_fd = open("/dev/tap", O_RDWR, 0));
+ if (if_fd < 0) {
+ syslog(LOG_ERR, "Can't open /dev/tap (2)");
+ return -1;
+ }
+ if(ioctl(if_fd, I_PUSH, "ip") < 0){
+ syslog(LOG_ERR, "Can't push IP module");
+ return -1;
+ }
+
+ if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) < 0)
+ syslog(LOG_ERR, "Can't get flags\n");
+
+ snprintf (actual_name, 32, "tap%d", ppa);
+ pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
+
+ ifr.lifr_ppa = ppa;
+ /* Assign ppa according to the unit number returned by tun device */
+
+ if (ioctl (if_fd, SIOCSLIFNAME, &ifr) < 0)
+ syslog (LOG_ERR, "Can't set PPA %d", ppa);
+ if (ioctl(if_fd, SIOCGLIFFLAGS, &ifr) <0)
+ syslog (LOG_ERR, "Can't get flags\n");
+ /* Push arp module to if_fd */
+ if (ioctl (if_fd, I_PUSH, "arp") < 0)
+ syslog (LOG_ERR, "Can't push ARP module (2)");
+
+ /* Push arp module to ip_fd */
+ if (ioctl (ip_fd, I_POP, NULL) < 0)
+ syslog (LOG_ERR, "I_POP failed\n");
+ if (ioctl (ip_fd, I_PUSH, "arp") < 0)
+ syslog (LOG_ERR, "Can't push ARP module (3)\n");
+ /* Open arp_fd */
+ TFR(arp_fd = open ("/dev/tap", O_RDWR, 0));
+ if (arp_fd < 0)
+ syslog (LOG_ERR, "Can't open %s\n", "/dev/tap");
+
+ /* Set ifname to arp */
+ strioc_if.ic_cmd = SIOCSLIFNAME;
+ strioc_if.ic_timout = 0;
+ strioc_if.ic_len = sizeof(ifr);
+ strioc_if.ic_dp = (char *)&ifr;
+ if (ioctl(arp_fd, I_STR, &strioc_if) < 0){
+ syslog (LOG_ERR, "Can't set ifname to arp\n");
+ }
+
+ if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){
+ syslog(LOG_ERR, "Can't link TAP device to IP");
+ return -1;
+ }
+
+ if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)
+ syslog (LOG_ERR, "Can't link TAP device to ARP");
+
+ close (if_fd);
+
+ memset(&ifr, 0x0, sizeof(ifr));
+ pstrcpy(ifr.lifr_name, sizeof(ifr.lifr_name), actual_name);
+ ifr.lifr_ip_muxid = ip_muxid;
+ ifr.lifr_arp_muxid = arp_muxid;
+
+ if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)
+ {
+ ioctl (ip_fd, I_PUNLINK , arp_muxid);
+ ioctl (ip_fd, I_PUNLINK, ip_muxid);
+ syslog (LOG_ERR, "Can't set multiplexor id");
+ }
+
+ snprintf(dev, dev_size, "tap%d", ppa);
+ return tap_fd;
+}
+
+int tap_open(char *ifname, int ifname_size, int *vnet_hdr, int vnet_hdr_required)
+{
+ char dev[10]="";
+ int fd;
+ if( (fd = tap_alloc(dev, sizeof(dev))) < 0 ){
+ fprintf(stderr, "Cannot allocate TAP device\n");
+ return -1;
+ }
+ pstrcpy(ifname, ifname_size, dev);
+ fcntl(fd, F_SETFL, O_NONBLOCK);
+ return fd;
+}