diff options
Diffstat (limited to 'framework/src/suricata/src/util-ioctl.c')
| -rw-r--r-- | framework/src/suricata/src/util-ioctl.c | 248 |
1 files changed, 0 insertions, 248 deletions
diff --git a/framework/src/suricata/src/util-ioctl.c b/framework/src/suricata/src/util-ioctl.c deleted file mode 100644 index f08dea71..00000000 --- a/framework/src/suricata/src/util-ioctl.c +++ /dev/null @@ -1,248 +0,0 @@ -/* Copyright (C) 2010 Open Information Security Foundation - * - * You can copy, redistribute or modify this Program under the terms of - * the GNU General Public License version 2 as published by the Free - * Software Foundation. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * version 2 along with this program; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA - * 02110-1301, USA. - */ - -/** - * \file - * - * \author Eric Leblond <eric@regit.org> - */ - -#include "suricata-common.h" -#include "conf.h" - -#ifdef HAVE_SYS_IOCTL_H -#include <sys/ioctl.h> -#endif - -#ifdef HAVE_LINUX_ETHTOOL_H -#include <linux/types.h> -#include <linux/ethtool.h> -#ifdef HAVE_LINUX_SOCKIOS_H -#include <linux/sockios.h> -#else -#error "ethtool.h present but sockios.h is missing" -#endif /* HAVE_LINUX_SOCKIOS_H */ -#endif /* HAVE_LINUX_ETHTOOL_H */ - -#ifdef HAVE_NET_IF_H -#include <net/if.h> -#endif - -/** - * \brief output a majorant of hardware header length - * - * \param Name of a network interface - */ -int GetIfaceMaxHWHeaderLength(const char *pcap_dev) -{ - if ((!strcmp("eth", pcap_dev)) - || - (!strcmp("br", pcap_dev)) - || - (!strcmp("bond", pcap_dev)) - || - (!strcmp("wlan", pcap_dev)) - || - (!strcmp("tun", pcap_dev)) - || - (!strcmp("tap", pcap_dev)) - || - (!strcmp("lo", pcap_dev))) - return ETHERNET_HEADER_LEN; - - if (!strcmp("ppp", pcap_dev)) - return SLL_HEADER_LEN; - /* SLL_HEADER_LEN is the biggest one */ - return SLL_HEADER_LEN; -} - -/** - * \brief output the link MTU - * - * \param Name of link - * \retval -1 in case of error, 0 if MTU can not be found - */ -int GetIfaceMTU(const char *pcap_dev) -{ -#ifdef SIOCGIFMTU - struct ifreq ifr; - int fd; - - (void)strlcpy(ifr.ifr_name, pcap_dev, sizeof(ifr.ifr_name)); - fd = socket(AF_INET, SOCK_DGRAM, 0); - if (fd == -1) { - return -1; - } - - if (ioctl(fd, SIOCGIFMTU, (char *)&ifr) < 0) { - SCLogWarning(SC_ERR_SYSCALL, - "Failure when trying to get MTU via ioctl: %d", - errno); - close(fd); - return -1; - } - close(fd); - SCLogInfo("Found an MTU of %d for '%s'", ifr.ifr_mtu, - pcap_dev); - return ifr.ifr_mtu; -#else - /* ioctl is not defined, let's pretend returning 0 is ok */ - return 0; -#endif -} - -/** - * \brief output max packet size for a link - * - * This does a best effort to find the maximum packet size - * for the link. In case of uncertainty, it will output a - * majorant to be sure avoid the cost of dynamic allocation. - * - * \param Name of a network interface - * \retval 0 in case of error - */ -int GetIfaceMaxPacketSize(const char *pcap_dev) -{ - int ll_header = GetIfaceMaxHWHeaderLength(pcap_dev); - int mtu = 0; - - if ((pcap_dev == NULL) || strlen(pcap_dev) == 0) - return 0; - - mtu = GetIfaceMTU(pcap_dev); - switch (mtu) { - case 0: - case -1: - return 0; - } - if (ll_header == -1) { - /* be conservative, choose a big one */ - ll_header = 16; - } - return ll_header + mtu; -} - -/** - * \brief output offloading status of the link - * - * Test interface for GRO and LRO features. If one of them is - * activated then suricata mays received packets merge at reception. - * The result is oversized packets and this may cause some serious - * problem in some capture mode where the size of the packet is - * limited (AF_PACKET in V2 more for example). - * - * ETHTOOL_GGRO ETH_FLAG_LRO - * - * \param Name of link - * \retval -1 in case of error, 0 if none, 1 if some - */ -int GetIfaceOffloading(const char *pcap_dev) -{ -#if defined (ETHTOOL_GGRO) && defined (ETHTOOL_GFLAGS) - struct ifreq ifr; - int fd; - struct ethtool_value ethv; - int ret = 0; - - fd = socket(AF_INET, SOCK_DGRAM, 0); - if (fd == -1) { - return -1; - } - (void)strlcpy(ifr.ifr_name, pcap_dev, sizeof(ifr.ifr_name)); - - /* First get GRO */ - ethv.cmd = ETHTOOL_GGRO; - ifr.ifr_data = (void *) ðv; - if (ioctl(fd, SIOCETHTOOL, (char *)&ifr) < 0) { - SCLogWarning(SC_ERR_SYSCALL, - "Failure when trying to get feature via ioctl: %s (%d)", - strerror(errno), errno); - close(fd); - return -1; - } else { - if (ethv.data) { - SCLogInfo("Generic Receive Offload is set on %s", pcap_dev); - ret = 1; - } else { - SCLogInfo("Generic Receive Offload is unset on %s", pcap_dev); - } - } - - /* Then get LRO which is set in a flag */ - ethv.data = 0; - ethv.cmd = ETHTOOL_GFLAGS; - ifr.ifr_data = (void *) ðv; - if (ioctl(fd, SIOCETHTOOL, (char *)&ifr) < 0) { - SCLogWarning(SC_ERR_SYSCALL, - "Failure when trying to get feature via ioctl: %s (%d)", - strerror(errno), errno); - close(fd); - return -1; - } else { - if (ethv.data & ETH_FLAG_LRO) { - SCLogInfo("Large Receive Offload is set on %s", pcap_dev); - ret = 1; - } else { - SCLogInfo("Large Receive Offload is unset on %s", pcap_dev); - } - } - - close(fd); - - return ret; -#else - /* ioctl is not defined, let's pretend returning 0 is ok */ - return 0; -#endif -} - -int GetIfaceRSSQueuesNum(const char *pcap_dev) -{ -#if defined HAVE_LINUX_ETHTOOL_H && defined ETHTOOL_GRXRINGS - struct ifreq ifr; - struct ethtool_rxnfc nfccmd; - int fd; - - (void)strlcpy(ifr.ifr_name, pcap_dev, sizeof(ifr.ifr_name)); - fd = socket(AF_INET, SOCK_DGRAM, 0); - if (fd == -1) { - SCLogWarning(SC_ERR_SYSCALL, - "Failure when opening socket for ioctl: %d", - errno); - return -1; - } - - nfccmd.cmd = ETHTOOL_GRXRINGS; - ifr.ifr_data = (void*) &nfccmd; - - if (ioctl(fd, SIOCETHTOOL, (char *)&ifr) < 0) { - if (errno != ENOTSUP) { - SCLogWarning(SC_ERR_SYSCALL, - "Failure when trying to get number of RSS queue ioctl: %d", - errno); - } - close(fd); - return 0; - } - close(fd); - SCLogInfo("Found %d RX RSS queues for '%s'", (int)nfccmd.data, - pcap_dev); - return (int)nfccmd.data; -#else - return 0; -#endif -} |