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authorK. Y. Srinivasan <kys@microsoft.com>2012-09-05 13:50:15 -0700
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-09-10 16:42:33 -0700
commit16e87100e62330cb1e58ee772cacb7d4e6d5b61b (patch)
treefcf248e2d171816927d286b7f0541f78b1ccecdf /tools/hv
parent4a3b97e5799571397ade963c760b7406d8e9a8a6 (diff)
Tools: hv: Implement the KVP verb - KVP_OP_GET_IP_INFO
Now implement the KVP verb - KVP_OP_GET_IP_INFO. This operation retrieves IP information for the specified interface. Signed-off-by: K. Y. Srinivasan <kys@microsoft.com> Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/hv')
-rw-r--r--tools/hv/hv_kvp_daemon.c93
1 files changed, 90 insertions, 3 deletions
diff --git a/tools/hv/hv_kvp_daemon.c b/tools/hv/hv_kvp_daemon.c
index 849c43817a2d..c8e101363735 100644
--- a/tools/hv/hv_kvp_daemon.c
+++ b/tools/hv/hv_kvp_daemon.c
@@ -603,6 +603,69 @@ static char *kvp_if_name_to_mac(char *if_name)
}
+/*
+ * Retrieve the interface name given tha MAC address.
+ */
+
+static char *kvp_mac_to_if_name(char *mac)
+{
+ DIR *dir;
+ struct dirent *entry;
+ FILE *file;
+ char *p, *q, *x;
+ char *if_name = NULL;
+ char buf[256];
+ char *kvp_net_dir = "/sys/class/net/";
+ char dev_id[256];
+ int i;
+
+ dir = opendir(kvp_net_dir);
+ if (dir == NULL)
+ return NULL;
+
+ snprintf(dev_id, sizeof(dev_id), kvp_net_dir);
+ q = dev_id + strlen(kvp_net_dir);
+
+ while ((entry = readdir(dir)) != NULL) {
+ /*
+ * Set the state for the next pass.
+ */
+ *q = '\0';
+
+ strcat(dev_id, entry->d_name);
+ strcat(dev_id, "/address");
+
+ file = fopen(dev_id, "r");
+ if (file == NULL)
+ continue;
+
+ p = fgets(buf, sizeof(buf), file);
+ if (p) {
+ x = strchr(p, '\n');
+ if (x)
+ *x = '\0';
+
+ for (i = 0; i < strlen(p); i++)
+ p[i] = toupper(p[i]);
+
+ if (!strcmp(p, mac)) {
+ /*
+ * Found the MAC match; return the interface
+ * name. The caller will free the memory.
+ */
+ if_name = strdup(entry->d_name);
+ fclose(file);
+ break;
+ }
+ }
+ fclose(file);
+ }
+
+ closedir(dir);
+ return if_name;
+}
+
+
static void kvp_process_ipconfig_file(char *cmd,
char *config_buf, int len,
int element_size, int offset)
@@ -749,10 +812,10 @@ static int kvp_process_ip_address(void *addrp,
}
if ((length - *offset) < addr_length + 1)
- return 1;
+ return HV_E_FAIL;
if (str == NULL) {
strcpy(buffer, "inet_ntop failed\n");
- return 1;
+ return HV_E_FAIL;
}
if (*offset == 0)
strcpy(buffer, tmp);
@@ -796,7 +859,7 @@ kvp_get_ip_info(int family, char *if_name, int op,
if (getifaddrs(&ifap)) {
strcpy(buffer, "getifaddrs failed\n");
- return 1;
+ return HV_E_FAIL;
}
curp = ifap;
@@ -1386,6 +1449,30 @@ int main(void)
}
switch (op) {
+ case KVP_OP_GET_IP_INFO:
+ kvp_ip_val = &hv_msg->body.kvp_ip_val;
+ if_name =
+ kvp_mac_to_if_name((char *)kvp_ip_val->adapter_id);
+
+ if (if_name == NULL) {
+ /*
+ * We could not map the mac address to an
+ * interface name; return error.
+ */
+ hv_msg->error = HV_E_FAIL;
+ break;
+ }
+ error = kvp_get_ip_info(
+ 0, if_name, KVP_OP_GET_IP_INFO,
+ kvp_ip_val,
+ (MAX_IP_ADDR_SIZE * 2));
+
+ if (error)
+ hv_msg->error = error;
+
+ free(if_name);
+ break;
+
case KVP_OP_SET_IP_INFO:
kvp_ip_val = &hv_msg->body.kvp_ip_val;
if_name = kvp_get_if_name(

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