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qga: add network stats to guest-network-get-interfaces

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we can get the network interface statistics inside a virtual machine by
guest-network-get-interfaces command. it is very useful for us tomonitor
and analyze network traffic.

Signed-off-by: ZhiPeng Lu <lu.zhipeng@zte.com.cn>
* don't rely on sizeof(wchar[]) for wchar[] indexing
* avoid camelCase variable names
* fix up getline() usage
* condensed commit subject line
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
This commit is contained in:
ZhiPeng Lu 2017-09-12 16:54:26 +08:00 • committed by Michael Roth
parent 105fad6bb2
commit 53f9fcb263
3 changed files with 160 additions and 2 deletions
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50
qga/commands-win32.c
View file

@ -1153,6 +1153,44 @@ out:
}
#endif
#define INTERFACE_PATH_BUF_SZ 512
static DWORD get_interface_index(const char *guid)
{
ULONG index;
DWORD status;
wchar_t wbuf[INTERFACE_PATH_BUF_SZ];
snwprintf(wbuf, INTERFACE_PATH_BUF_SZ, L"\\device\\tcpip_%s", guid);
wbuf[INTERFACE_PATH_BUF_SZ - 1] = 0;
status = GetAdapterIndex (wbuf, &index);
if (status != NO_ERROR) {
return (DWORD)~0;
} else {
return index;
}
}
static int guest_get_network_stats(const char *name,
GuestNetworkInterfaceStat *stats)
{
DWORD if_index = 0;
MIB_IFROW a_mid_ifrow;
memset(&a_mid_ifrow, 0, sizeof(a_mid_ifrow));
if_index = get_interface_index(name);
a_mid_ifrow.dwIndex = if_index;
if (NO_ERROR == GetIfEntry(&a_mid_ifrow)) {
stats->rx_bytes = a_mid_ifrow.dwInOctets;
stats->rx_packets = a_mid_ifrow.dwInUcastPkts;
stats->rx_errs = a_mid_ifrow.dwInErrors;
stats->rx_dropped = a_mid_ifrow.dwInDiscards;
stats->tx_bytes = a_mid_ifrow.dwOutOctets;
stats->tx_packets = a_mid_ifrow.dwOutUcastPkts;
stats->tx_errs = a_mid_ifrow.dwOutErrors;
stats->tx_dropped = a_mid_ifrow.dwOutDiscards;
return 0;
}
return -1;
}
GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
{
IP_ADAPTER_ADDRESSES *adptr_addrs, *addr;
@ -1160,6 +1198,7 @@ GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
GuestNetworkInterfaceList *head = NULL, *cur_item = NULL;
GuestIpAddressList *head_addr, *cur_addr;
GuestNetworkInterfaceList *info;
GuestNetworkInterfaceStat *interface_stat = NULL;
GuestIpAddressList *address_item = NULL;
unsigned char *mac_addr;
char *addr_str;
@ -1239,6 +1278,17 @@ GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp)
info->value->has_ip_addresses = true;
info->value->ip_addresses = head_addr;
}
if (!info->value->has_statistics) {
interface_stat = g_malloc0(sizeof(*interface_stat));
if (guest_get_network_stats(addr->AdapterName,
interface_stat) == -1) {
info->value->has_statistics = false;
g_free(interface_stat);
} else {
info->value->statistics = interface_stat;
info->value->has_statistics = true;
}
}
}
WSACleanup();
out: