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lib:socket: detect link speed with ethtool ioctl in get_interfaces (on linux)

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Pair-Programmed-With: Michael Adam <obnox@samba.org>

Signed-off-by: Anoop C S <anoopcs@redhat.com>
Signed-off-by: Michael Adam <obnox@samba.org>
Reviewed-by: Stefan Metzmacher <metze@samba.org>
This commit is contained in:
Anoop C S 2016-01-22 20:51:55 +05:30 committed by Michael Adam
parent 1862aa6c25
commit 549a9abc7e
1 changed files with 49 additions and 0 deletions
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49
lib/socket/interfaces.c
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@ -26,6 +26,11 @@
#include "lib/util/tsort.h"
#include "librpc/gen_ndr/ioctl.h"
#ifdef HAVE_ETHTOOL
#include "linux/sockios.h"
#include "linux/ethtool.h"
#endif
/****************************************************************************
Create a struct sockaddr_storage with the netmask bits set to 1.
****************************************************************************/
@ -120,6 +125,47 @@ void make_net(struct sockaddr_storage *pss_out,
make_bcast_or_net(pss_out, pss_in, nmask, false);
}
#ifdef HAVE_ETHTOOL
static void query_iface_speed_from_name(const char *name, uint64_t *speed)
{
int ret = 0;
struct ethtool_cmd ecmd;
struct ethtool_value edata;
struct ifreq ifr;
int fd;
fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
if (fd == -1) {
DBG_ERR("Failed to open socket.");
return;
}
strncpy(ifr.ifr_name, name, IF_NAMESIZE);
ifr.ifr_data = (void *)&edata;
edata.cmd = ETHTOOL_GLINK;
ret = ioctl(fd, SIOCETHTOOL, &ifr);
if (ret == -1) {
goto done;
}
if (edata.data == 0) {
/* no link detected */
*speed = 0;
goto done;
}
ifr.ifr_data = (void *)&ecmd;
ecmd.cmd = ETHTOOL_GSET;
ret = ioctl(fd, SIOCETHTOOL, &ifr);
if (ret == -1) {
goto done;
}
*speed = (ethtool_cmd_speed(&ecmd)) * 1000 * 1000;
done:
(void)close(fd);
}
#endif
/****************************************************************************
Try the "standard" getifaddrs/freeifaddrs interfaces.
@ -222,6 +268,9 @@ static int _get_interfaces(TALLOC_CTX *mem_ctx, struct iface_struct **pifaces)
"%s\n", ifptr->ifa_name, strerror(errno));
}
#ifdef HAVE_ETHTOOL
query_iface_speed_from_name(ifptr->ifa_name, &if_speed);
#endif
ifaces[total].linkspeed = if_speed;
ifaces[total].capability = FSCTL_NET_IFACE_NONE_CAPABLE;