#include "system/network.h"
#include "interfaces.h"
#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.
}
/****************************************************************************
- Create a struct sockaddr_storage set to the broadcast or network adress from
+ Create a struct sockaddr_storage set to the broadcast or network address from
an incoming sockaddr_storage.
****************************************************************************/
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.\n");
+ return;
+ }
+
+ if (strlen(name) >= IF_NAMESIZE) {
+ DBG_ERR("Interface name too long.\n");
+ goto done;
+ }
+
+ ZERO_STRUCT(ifr);
+ strlcpy(ifr.ifr_name, name, IF_NAMESIZE);
+
+ ifr.ifr_data = (void *)&edata;
+ ZERO_STRUCT(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;
+ ZERO_STRUCT(ecmd);
+ ecmd.cmd = ETHTOOL_GSET;
+ ret = ioctl(fd, SIOCETHTOOL, &ifr);
+ if (ret == -1) {
+ goto done;
+ }
+ *speed = ((uint64_t)ethtool_cmd_speed(&ecmd)) * 1000 * 1000;
+
+done:
+ (void)close(fd);
+}
+
+static void query_iface_rx_queues_from_name(const char *name,
+ uint64_t *rx_queues)
+{
+ int ret = 0;
+ struct ethtool_rxnfc rxcmd;
+ struct ifreq ifr;
+ int fd;
+
+ fd = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
+ if (fd == -1) {
+ DBG_ERR("Failed to open socket.\n");
+ return;
+ }
+
+ if (strlen(name) >= IF_NAMESIZE) {
+ DBG_ERR("Interface name too long.\n");
+ goto done;
+ }
+
+ ZERO_STRUCT(ifr);
+ strlcpy(ifr.ifr_name, name, IF_NAMESIZE);
+
+ ifr.ifr_data = (void *)&rxcmd;
+ ZERO_STRUCT(rxcmd);
+ rxcmd.cmd = ETHTOOL_GRXRINGS;
+ ret = ioctl(fd, SIOCETHTOOL, &ifr);
+ if (ret == -1) {
+ goto done;
+ }
+
+ *rx_queues = rxcmd.data;
+
+done:
+ (void)close(fd);
+}
+#endif
/****************************************************************************
Try the "standard" getifaddrs/freeifaddrs interfaces.
/* Loop through interfaces, looking for given IP address */
for (ifptr = iflist; ifptr != NULL; ifptr = ifptr->ifa_next) {
+ uint64_t if_speed = 1000 * 1000 * 1000; /* 1Gbps */
+ uint64_t rx_queues = 1;
if (!ifptr->ifa_addr || !ifptr->ifa_netmask) {
continue;
continue;
}
+ ifaces[total].if_index = if_nametoindex(ifptr->ifa_name);
+ if (ifaces[total].if_index == 0) {
+ DBG_ERR("Failed to retrieve interface index for '%s': "
+ "%s\n", ifptr->ifa_name, strerror(errno));
+ }
+
+#ifdef HAVE_ETHTOOL
+ query_iface_speed_from_name(ifptr->ifa_name, &if_speed);
+ query_iface_rx_queues_from_name(ifptr->ifa_name, &rx_queues);
+#endif
+ ifaces[total].linkspeed = if_speed;
+ ifaces[total].capability = FSCTL_NET_IFACE_NONE_CAPABLE;
+ if (rx_queues > 1) {
+ ifaces[total].capability |= FSCTL_NET_IFACE_RSS_CAPABLE;
+ }
+
if (strlcpy(ifaces[total].name, ifptr->ifa_name,
sizeof(ifaces[total].name)) >=
sizeof(ifaces[total].name)) {
if (((struct sockaddr *)&i1->ip)->sa_family == AF_INET) {
struct sockaddr_in *s1 = (struct sockaddr_in *)&i1->ip;
struct sockaddr_in *s2 = (struct sockaddr_in *)&i2->ip;
-
- r = ntohl(s1->sin_addr.s_addr) -
- ntohl(s2->sin_addr.s_addr);
- if (r) {
- return r;
+ uint32_t a1 = ntohl(s1->sin_addr.s_addr);
+ uint32_t a2 = ntohl(s2->sin_addr.s_addr);
+ r = NUMERIC_CMP(a1, a2);
+ if (r == 0) {
+ /* compare netmasks as a tiebreaker */
+ s1 = (struct sockaddr_in *)&i1->netmask;
+ s2 = (struct sockaddr_in *)&i2->netmask;
+ a1 = ntohl(s1->sin_addr.s_addr);
+ a2 = ntohl(s2->sin_addr.s_addr);
+ r = NUMERIC_CMP(a1, a2);
}
-
- s1 = (struct sockaddr_in *)&i1->netmask;
- s2 = (struct sockaddr_in *)&i2->netmask;
-
- return ntohl(s1->sin_addr.s_addr) -
- ntohl(s2->sin_addr.s_addr);
+ return r;
}
return 0;
}
above */
int get_interfaces(TALLOC_CTX *mem_ctx, struct iface_struct **pifaces)
{
- struct iface_struct *ifaces;
+ struct iface_struct *ifaces = NULL;
int total, i, j;
total = _get_interfaces(mem_ctx, &ifaces);
- if (total <= 0) return total;
+ /* If we have an error, no interface or just one we can leave */
+ if (total <= 1) {
+ *pifaces = ifaces;
+ return total;
+ }
/* now we need to remove duplicates */
TYPESAFE_QSORT(ifaces, total, iface_comp);