/*
- * Copyright (c) 2014 VMware, Inc.
+ * Copyright (c) 2014, 2016 VMware, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <stdlib.h>
#include <config.h>
#include <errno.h>
+#include <iphlpapi.h>
#include <net/if.h>
unsigned int cache_valid;
int ifindex;
- uint8_t mac[ETH_ADDR_LEN];
+ struct eth_addr mac;
uint32_t mtu;
unsigned int ifi_flags;
};
/* General information of a network device. */
const char *name;
- uint8_t mac_address[ETH_ADDR_LEN];
+ struct eth_addr mac_address;
uint32_t mtu;
uint32_t ifi_flags;
};
netdev_windows_system_construct(struct netdev *netdev_)
{
struct netdev_windows *netdev = netdev_windows_cast(netdev_);
- uint8_t mac[ETH_ADDR_LEN];
struct netdev_windows_netdev_info info;
struct ofpbuf *buf;
int ret;
netdev->dev_type = info.ovs_type;
netdev->port_no = info.port_no;
- memcpy(netdev->mac, info.mac_address, ETH_ADDR_LEN);
+ netdev->mac = info.mac_address;
netdev->cache_valid = VALID_ETHERADDR;
netdev->ifindex = -EOPNOTSUPP;
[OVS_WIN_NETDEV_ATTR_IF_FLAGS] = { .type = NL_A_U32 },
};
- struct nlattr *a[ARRAY_SIZE(ovs_netdev_policy)];
- struct ovs_header *ovs_header;
- struct nlmsghdr *nlmsg;
- struct genlmsghdr *genl;
- struct ofpbuf b;
-
netdev_windows_info_init(info);
- ofpbuf_use_const(&b, buf->data, buf->size);
- nlmsg = ofpbuf_try_pull(&b, sizeof *nlmsg);
- genl = ofpbuf_try_pull(&b, sizeof *genl);
- ovs_header = ofpbuf_try_pull(&b, sizeof *ovs_header);
+ struct ofpbuf b = ofpbuf_const_initializer(&b, buf->data, buf->size);
+ struct nlmsghdr *nlmsg = ofpbuf_try_pull(&b, sizeof *nlmsg);
+ struct genlmsghdr *genl = ofpbuf_try_pull(&b, sizeof *genl);
+ struct ovs_header *ovs_header = ofpbuf_try_pull(&b, sizeof *ovs_header);
+
+ struct nlattr *a[ARRAY_SIZE(ovs_netdev_policy)];
if (!nlmsg || !genl || !ovs_header
|| nlmsg->nlmsg_type != ovs_win_netdev_family
|| !nl_policy_parse(&b, 0, ovs_netdev_policy, a,
info->port_no = nl_attr_get_odp_port(a[OVS_WIN_NETDEV_ATTR_PORT_NO]);
info->ovs_type = nl_attr_get_u32(a[OVS_WIN_NETDEV_ATTR_TYPE]);
info->name = nl_attr_get_string(a[OVS_WIN_NETDEV_ATTR_NAME]);
- memcpy(info->mac_address, nl_attr_get_unspec(a[OVS_WIN_NETDEV_ATTR_MAC_ADDR],
+ memcpy(&info->mac_address, nl_attr_get_unspec(a[OVS_WIN_NETDEV_ATTR_MAC_ADDR],
sizeof(info->mac_address)), sizeof(info->mac_address));
info->mtu = nl_attr_get_u32(a[OVS_WIN_NETDEV_ATTR_MTU]);
info->ifi_flags = nl_attr_get_u32(a[OVS_WIN_NETDEV_ATTR_IF_FLAGS]);
static int
netdev_windows_get_etheraddr(const struct netdev *netdev_,
- uint8_t mac[ETH_ADDR_LEN])
+ struct eth_addr *mac)
{
struct netdev_windows *netdev = netdev_windows_cast(netdev_);
ovs_assert((netdev->cache_valid & VALID_ETHERADDR) != 0);
if (netdev->cache_valid & VALID_ETHERADDR) {
- memcpy(mac, netdev->mac, ETH_ADDR_LEN);
+ *mac = netdev->mac;
} else {
return EINVAL;
}
* But vswitchd bringup expects this to be implemented. */
static int
netdev_windows_set_etheraddr(const struct netdev *netdev_,
- uint8_t mac[ETH_ADDR_LEN])
+ const struct eth_addr mac)
{
return 0;
}
return 0;
}
+/* Looks up in the ARP table entry for a given 'ip'. If it is found, the
+ * corresponding MAC address will be copied in 'mac' and return 0. If no
+ * matching entry is found or an error occurs it will log it and return ENXIO.
+ */
+static int
+netdev_windows_arp_lookup(const struct netdev *netdev,
+ ovs_be32 ip, struct eth_addr *mac)
+{
+ PMIB_IPNETTABLE arp_table = NULL;
+ /* The buffer length of all ARP entries */
+ uint32_t buffer_length = 0;
+ uint32_t ret_val = 0;
+ uint32_t counter = 0;
+
+ ret_val = GetIpNetTable(arp_table, &buffer_length, false);
+
+ if (ret_val != ERROR_INSUFFICIENT_BUFFER ) {
+ VLOG_ERR("Call to GetIpNetTable failed with error: %s",
+ ovs_format_message(ret_val));
+ return ENXIO;
+ }
+
+ arp_table = (MIB_IPNETTABLE *) malloc(buffer_length);
+
+ if (arp_table == NULL) {
+ VLOG_ERR("Could not allocate memory for all the interfaces");
+ return ENXIO;
+ }
+
+ ret_val = GetIpNetTable(arp_table, &buffer_length, false);
+
+ if (ret_val == NO_ERROR) {
+ for (counter = 0; counter < arp_table->dwNumEntries; counter++) {
+ if (arp_table->table[counter].dwAddr == ip) {
+ memcpy(mac, arp_table->table[counter].bPhysAddr, ETH_ADDR_LEN);
+
+ free(arp_table);
+ return 0;
+ }
+ }
+ } else {
+ VLOG_ERR("Call to GetIpNetTable failed with error: %s",
+ ovs_format_message(ret_val));
+ }
+
+ free(arp_table);
+ return ENXIO;
+}
+
+static int
+netdev_windows_get_next_hop(const struct in_addr *host,
+ struct in_addr *next_hop,
+ char **netdev_name)
+{
+ uint32_t ret_val = 0;
+ /* The buffer length of all addresses */
+ uint32_t buffer_length = 1000;
+ PIP_ADAPTER_ADDRESSES all_addr = NULL;
+ PIP_ADAPTER_ADDRESSES cur_addr = NULL;
+
+ ret_val = GetAdaptersAddresses(AF_INET,
+ GAA_FLAG_INCLUDE_PREFIX |
+ GAA_FLAG_INCLUDE_GATEWAYS,
+ NULL, all_addr, &buffer_length);
+
+ if (ret_val != ERROR_INSUFFICIENT_BUFFER ) {
+ VLOG_ERR("Call to GetAdaptersAddresses failed with error: %s",
+ ovs_format_message(ret_val));
+ return ENXIO;
+ }
+
+ all_addr = (IP_ADAPTER_ADDRESSES *) malloc(buffer_length);
+
+ if (all_addr == NULL) {
+ VLOG_ERR("Could not allocate memory for all the interfaces");
+ return ENXIO;
+ }
+
+ ret_val = GetAdaptersAddresses(AF_INET,
+ GAA_FLAG_INCLUDE_PREFIX |
+ GAA_FLAG_INCLUDE_GATEWAYS,
+ NULL, all_addr, &buffer_length);
+
+ if (ret_val == NO_ERROR) {
+ cur_addr = all_addr;
+ while (cur_addr) {
+ if(cur_addr->FirstGatewayAddress &&
+ cur_addr->FirstGatewayAddress->Address.lpSockaddr) {
+ struct sockaddr_in *ipv4 = (struct sockaddr_in *)
+ cur_addr->FirstGatewayAddress->Address.lpSockaddr;
+ next_hop->s_addr = ipv4->sin_addr.S_un.S_addr;
+ *netdev_name = xstrdup((char *)cur_addr->FriendlyName);
+
+ free(all_addr);
+
+ return 0;
+ }
+
+ cur_addr = cur_addr->Next;
+ }
+ } else {
+ VLOG_ERR("Call to GetAdaptersAddresses failed with error: %s",
+ ovs_format_message(ret_val));
+ }
+
+ if (all_addr) {
+ free(all_addr);
+ }
+ return ENXIO;
+}
+
static int
netdev_windows_internal_construct(struct netdev *netdev_)
{
.get_etheraddr = netdev_windows_get_etheraddr, \
.set_etheraddr = netdev_windows_set_etheraddr, \
.update_flags = netdev_windows_update_flags, \
+ .get_next_hop = netdev_windows_get_next_hop, \
+ .arp_lookup = netdev_windows_arp_lookup, \
}
const struct netdev_class netdev_windows_class =
projects / cascardo / ovs.git / blobdiff