diff options
Diffstat (limited to 'net/tap-solaris.c')
| -rw-r--r-- | net/tap-solaris.c | 185 |
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 *)𝔦 + 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; +} |