#include <string.h>
#include <errno.h>
#include <sys/ioctl.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <linux/if_arp.h>
#include <ifaddrs.h>

#include "dev.h"
#include "str.h"
#include "sock.h"
#include "die.h"
#include "link.h"
#include "built_in.h"

int device_ifindex(const char *ifname)
{
	int ret, sock, index;
	struct ifreq ifr;

	if (!strncmp("any", ifname, strlen("any")))
		return 0;

	sock = af_socket(AF_INET);

	memset(&ifr, 0, sizeof(ifr));
	strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);

	ret = ioctl(sock, SIOCGIFINDEX, &ifr);
	if (unlikely(ret))
		panic("Cannot get ifindex from device!\n");

	index = ifr.ifr_ifindex;
	close(sock);

	return index;
}

int device_type(const char *ifname)
{
	int ret, sock, type;
	struct ifreq ifr;

	if (!strncmp("any", ifname, strlen("any")))
		return ARPHRD_ETHER;

	sock = af_socket(AF_INET);

	memset(&ifr, 0, sizeof(ifr));
	strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);

	ret = ioctl(sock, SIOCGIFHWADDR, &ifr);
	if (unlikely(ret))
		panic("Cannot get iftype from device!\n");

	/* dev->type */
	type = ifr.ifr_hwaddr.sa_family;
	close(sock);

	return type;
}

static int __device_address6(const char *ifname, struct sockaddr_storage *ss)
{
	int ret, family, found = -EINVAL;
	struct ifaddrs *ifaddr, *ifa;

	ret = getifaddrs(&ifaddr);
	if (unlikely(ret < 0))
		panic("Cannot get device addresses for IPv6!\n");

	for (ifa = ifaddr; ifa != NULL; ifa = ifa->ifa_next) {
		family = ifa->ifa_addr->sa_family;
		if (family != AF_INET6)
			continue;
		if (strcmp(ifa->ifa_name, ifname))
			continue;

		memcpy(ss, ifa->ifa_addr, sizeof(*ss));
		found = 0;
		break;
	}

	freeifaddrs(ifaddr);
	return found;
}

int device_address(const char *ifname, int af, struct sockaddr_storage *ss)
{
	int ret, sock;
	struct ifreq ifr;

	if (unlikely(!ss))
		return -EINVAL;
	if (!strncmp("any", ifname, strlen("any")))
		return -EINVAL;
	if (af == AF_INET6)
		return __device_address6(ifname, ss);

	sock = af_socket(af);

	memset(&ifr, 0, sizeof(ifr));
	strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);

	ifr.ifr_addr.sa_family = af;

	ret = ioctl(sock, SIOCGIFADDR, &ifr);
	if (likely(!ret))
		memcpy(ss, &ifr.ifr_addr, sizeof(ifr.ifr_addr));

	close(sock);
	return ret;
}

size_t device_mtu(const char *ifname)
{
	size_t mtu = 0;
	int ret, sock;
	struct ifreq ifr;

	sock = af_socket(AF_INET);

	memset(&ifr, 0, sizeof(ifr));
	strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);

	ret = ioctl(sock, SIOCGIFMTU, &ifr);
	if (likely(!ret))
		mtu = ifr.ifr_mtu;

	close(sock);
	return mtu;
}

short device_get_flags(const char *ifname)
{
	short flags = 0;
	int ret, sock;
	struct ifreq ifr;

	sock = af_socket(AF_INET);

	memset(&ifr, 0, sizeof(ifr));
	strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);

	ret = ioctl(sock, SIOCGIFFLAGS, &ifr);
	if (likely(!ret))
		flags = ifr.ifr_flags;

	close(sock);
	return flags;
}

void device_set_flags(const char *ifname, const short flags)
{
	int ret, sock;
	struct ifreq ifr;

	sock = af_socket(AF_INET);

	memset(&ifr, 0, sizeof(ifr));
	strlcpy(ifr.ifr_name, ifname, IFNAMSIZ);
	ifr.ifr_flags = flags;

	ret = ioctl(sock, SIOCSIFFLAGS, &ifr);
	if (unlikely(ret < 0))
		panic("Cannot set NIC flags!\n");

	close(sock);
}

int device_up_and_running(const char *ifname)
{
	if (!ifname)
		return -EINVAL;
	if (!strncmp("any", ifname, strlen("any")))
		return 1;

	return (device_get_flags(ifname) &
		(IFF_UP | IFF_RUNNING)) ==
		(IFF_UP | IFF_RUNNING);
}

u32 device_bitrate(const char *ifname)
{
	u32 scopper, swireless;

	scopper   = ethtool_bitrate(ifname);
	swireless = wireless_bitrate(ifname);

	return scopper ? : swireless;
}

short device_enter_promiscuous_mode(const char *ifname)
{
	short ifflags;

	if (!strncmp("any", ifname, strlen("any")))
		return 0;

	ifflags = device_get_flags(ifname);
	device_set_flags(ifname, ifflags | IFF_PROMISC);

	return ifflags;
}

void device_leave_promiscuous_mode(const char *ifname, short oldflags)
{
	if (!strncmp("any", ifname, strlen("any")))
		return;

	device_set_flags(ifname, oldflags);
}
='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Tom Zanussi &lt;tom.zanussi@linux.intel.com&gt;</td><td class='right'>2016-03-03 12:54:59 -0600</td></tr>
<tr><th>committer</th><td>Steven Rostedt &lt;rostedt@goodmis.org&gt;</td><td class='right'>2016-04-19 18:56:01 -0400</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=5463bfda327b1f7310556ef3136533e27c774f13'>5463bfda327b1f7310556ef3136533e27c774f13</a> (<a href='/cgit.cgi/linux/net-next.git/patch/Documentation?id=5463bfda327b1f7310556ef3136533e27c774f13'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=5463bfda327b1f7310556ef3136533e27c774f13'>2221e87e917ba0652329ef47c1f40c024b9e5697</a> /<a href='/cgit.cgi/linux/net-next.git/tree/Documentation?id=5463bfda327b1f7310556ef3136533e27c774f13'>Documentation</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/Documentation?id=db1388b4ffa9e31e9ff0abacc3bdb121bec8c688'>db1388b4ffa9e31e9ff0abacc3bdb121bec8c688</a> (<a href='/cgit.cgi/linux/net-next.git/diff/Documentation?id=5463bfda327b1f7310556ef3136533e27c774f13&amp;id2=db1388b4ffa9e31e9ff0abacc3bdb121bec8c688'>diff</a>)</td></tr></table>
<div class='commit-subject'>tracing: Add support for named hist triggers</div><div class='commit-msg'>Allow users to define 'named' hist triggers.  All triggers created
with the same 'name=xxx' option will update the same shared histogram
data.

This expands the hist trigger syntax from this:

    # echo hist:keys=xxx ... [ if filter] &gt; event/trigger

to this:

    # echo hist:name=xxx:keys=xxx ... [ if filter] &gt; event/trigger

Named histograms must use a 'compatible' set of keys and values, which
means each event added to a set of named triggers must have the same
names and types.

Reading the 'hist' file of any of the participating events will
produce the same output as any other participating event, which is to
be expected since they share the same data.

Link: http://lkml.kernel.org/r/1dbc84ee3322a75daaf5b3ef1d0cc0a2fb682fc7.1457029949.git.tom.zanussi@linux.intel.com

Signed-off-by: Tom Zanussi &lt;tom.zanussi@linux.intel.com&gt;
Tested-by: Masami Hiramatsu &lt;masami.hiramatsu.pt@hitachi.com&gt;
Reviewed-by: Namhyung Kim &lt;namhyung@kernel.org&gt;
Signed-off-by: Steven Rostedt &lt;rostedt@goodmis.org&gt;
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=5463bfda327b1f7310556ef3136533e27c774f13'>Diffstat</a> (limited to 'Documentation')</div><table summary='diffstat' class='diffstat'>