diff options
Diffstat (limited to 'usr/iscsi_net_util.c')
| -rw-r--r-- | usr/iscsi_net_util.c | 61 |
1 files changed, 61 insertions, 0 deletions
diff --git a/usr/iscsi_net_util.c b/usr/iscsi_net_util.c index e52be82..d5807fe 100644 --- a/usr/iscsi_net_util.c +++ b/usr/iscsi_net_util.c @@ -22,12 +22,73 @@ #include <sys/types.h> #include <sys/socket.h> #include <sys/ioctl.h> +#include <linux/sockios.h> #include "sysdeps.h" #include "ethtool-copy.h" #include "iscsi_net_util.h" #include "log.h" +struct iscsi_net_driver { + const char *net_drv_name; + const char *iscsi_transport; +}; + +static struct iscsi_net_driver net_drivers[] = { + {"cxgb3", "cxgb3i" }, + {"bnx2", "bnx2i" }, + {"bnx2x", "bnx2i"}, + {"be2net", "be2iscsi"}, + {NULL, NULL} +}; + +/** + * net_get_transport_name_from_iface - get name of transport to use for iface + * @iface: net iface name + * @transport: buffer to hold transport name + * + * transport buffer should be ISCSI_TRANSPORT_NAME_MAXLEN bytes + */ +int net_get_transport_name_from_iface(char *iface, char *transport) +{ + struct ethtool_drvinfo drvinfo; + struct ifreq ifr; + int err, fd, i; + + memset(&ifr, 0, sizeof(ifr)); + strcpy(ifr.ifr_name, iface); + + fd = socket(AF_INET, SOCK_DGRAM, 0); + if (fd < 0) { + log_error("Could not open socket for ioctl."); + return errno; + } + + drvinfo.cmd = ETHTOOL_GDRVINFO; + ifr.ifr_data = (caddr_t)&drvinfo; + err = ioctl(fd, SIOCETHTOOL, &ifr); + if (err < 0) { + log_error("Could not get driver."); + err = errno; + goto close_sock; + } + + for (i = 0; net_drivers[i].net_drv_name != NULL; i++) { + struct iscsi_net_driver *net_driver = &net_drivers[i]; + + if (!strcmp(net_driver->net_drv_name, drvinfo.driver)) { + strcpy(transport, net_driver->iscsi_transport); + err = 0; + goto close_sock; + } + } + err = ENODEV; + +close_sock: + close(fd); + return err; +} + /** * net_get_dev_from_hwaddress - given a hwaddress return the ethX * @hwaddress: hw address no larger than ISCSI_HWADDRESS_BUF_SIZE |