Commit 53f9fcb2 authored by ZhiPeng Lu's avatar ZhiPeng Lu Committed by Michael Roth
Browse files

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



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: default avatarZhiPeng 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: default avatarMichael Roth <mdroth@linux.vnet.ibm.com>
parent 105fad6b

qga/commands-posix.c

+73 −1
Original line number Diff line number Diff line
@@ -1643,6 +1643,67 @@ guest_find_interface(GuestNetworkInterfaceList *head, 
    return head;

}



static int guest_get_network_stats(const char *name,

                       GuestNetworkInterfaceStat *stats)

{

    int name_len;

    char const *devinfo = "/proc/net/dev";

    FILE *fp;

    char *line = NULL, *colon;

    size_t n = 0;

    fp = fopen(devinfo, "r");

    if (!fp) {

        return -1;

    }

    name_len = strlen(name);

    while (getline(&line, &n, fp) != -1) {

        long long dummy;

        long long rx_bytes;

        long long rx_packets;

        long long rx_errs;

        long long rx_dropped;

        long long tx_bytes;

        long long tx_packets;

        long long tx_errs;

        long long tx_dropped;

        char *trim_line;

        trim_line = g_strchug(line);

        if (trim_line[0] == '\0') {

            continue;

        }

        colon = strchr(trim_line, ':');

        if (!colon) {

            continue;

        }

        if (colon - name_len  == trim_line &&

           strncmp(trim_line, name, name_len) == 0) {

            if (sscanf(colon + 1,

                "%lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld %lld",

                  &rx_bytes, &rx_packets, &rx_errs, &rx_dropped,

                  &dummy, &dummy, &dummy, &dummy,

                  &tx_bytes, &tx_packets, &tx_errs, &tx_dropped,

                  &dummy, &dummy, &dummy, &dummy) != 16) {

                continue;

            }

            stats->rx_bytes = rx_bytes;

            stats->rx_packets = rx_packets;

            stats->rx_errs = rx_errs;

            stats->rx_dropped = rx_dropped;

            stats->tx_bytes = tx_bytes;

            stats->tx_packets = tx_packets;

            stats->tx_errs = tx_errs;

            stats->tx_dropped = tx_dropped;

            fclose(fp);

            g_free(line);

            return 0;

        }

    }

    fclose(fp);

    g_free(line);

    g_debug("/proc/net/dev: Interface '%s' not found", name);

    return -1;

}



/*

 * Build information about guest interfaces

 */
@@ -1659,6 +1720,7 @@ GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 
    for (ifa = ifap; ifa; ifa = ifa->ifa_next) {

        GuestNetworkInterfaceList *info;

        GuestIpAddressList **address_list = NULL, *address_item = NULL;

        GuestNetworkInterfaceStat  *interface_stat = NULL;

        char addr4[INET_ADDRSTRLEN];

        char addr6[INET6_ADDRSTRLEN];

        int sock;
@@ -1778,7 +1840,17 @@ GuestNetworkInterfaceList *qmp_guest_network_get_interfaces(Error **errp) 


        info->value->has_ip_addresses = true;





        if (!info->value->has_statistics) {

            interface_stat = g_malloc0(sizeof(*interface_stat));

            if (guest_get_network_stats(info->value->name,

                interface_stat) == -1) {

                info->value->has_statistics = false;

                g_free(interface_stat);

            } else {

                info->value->statistics = interface_stat;

                info->value->has_statistics = true;

            }

        }

    }



    freeifaddrs(ifap);

qga/commands-win32.c

+50 −0
Original line number Diff line number Diff line
@@ -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:

qga/qapi-schema.json

+37 −1
Original line number Diff line number Diff line
@@ -642,6 +642,38 @@ 
           'ip-address-type': 'GuestIpAddressType',

           'prefix': 'int'} }



##

# @GuestNetworkInterfaceStat:

#

# @rx-bytes: total bytes received

#

# @rx-packets: total packets received

#

# @rx-errs: bad packets received

#

# @rx-dropped: receiver dropped packets

#

# @tx-bytes: total bytes transmitted

#

# @tx-packets: total packets transmitted

#

# @tx-errs: packet transmit problems

#

# @tx-dropped: dropped packets transmitted

#

# Since: 2.11

##

{ 'struct': 'GuestNetworkInterfaceStat',

  'data': {'rx-bytes': 'uint64',

            'rx-packets': 'uint64',

            'rx-errs': 'uint64',

            'rx-dropped': 'uint64',

            'tx-bytes': 'uint64',

            'tx-packets': 'uint64',

            'tx-errs': 'uint64',

            'tx-dropped': 'uint64'

           } }



##

# @GuestNetworkInterface:

#
@@ -651,12 +683,16 @@ 
#

# @ip-addresses: List of addresses assigned to @name

#

# @statistics: various statistic counters related to @name

# (since 2.11)

#

# Since: 1.1

##

{ 'struct': 'GuestNetworkInterface',

  'data': {'name': 'str',

           '*hardware-address': 'str',

           '*ip-addresses': ['GuestIpAddress'] } }

           '*ip-addresses': ['GuestIpAddress'],

           '*statistics': 'GuestNetworkInterfaceStat' } }



##

# @guest-network-get-interfaces: