diff options
author | K. Y. Srinivasan <kys@microsoft.com> | 2012-09-05 13:50:15 -0700 |
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committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-09-10 16:42:33 -0700 |
commit | 16e87100e62330cb1e58ee772cacb7d4e6d5b61b (patch) | |
tree | fcf248e2d171816927d286b7f0541f78b1ccecdf /tools | |
parent | 4a3b97e5799571397ade963c760b7406d8e9a8a6 (diff) | |
download | linux-16e87100e62330cb1e58ee772cacb7d4e6d5b61b.tar.bz2 |
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')
-rw-r--r-- | tools/hv/hv_kvp_daemon.c | 93 |
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( |