[V1 DHCP SERVER: PATCH 1/4] move get_interface_name() interface_is_up() to common.c

[martin . xu]

From: Martin Xu <martin...@intel.com>

---
 gdhcp/client.c |   63 ------------------------------------------------
 gdhcp/common.c |   73 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 gdhcp/common.h |    6 ++++
 3 files changed, 79 insertions(+), 63 deletions(-)

diff --git a/gdhcp/client.c b/gdhcp/client.c
index b9a0e7f..60aba00 100644
--- a/gdhcp/client.c
+++ b/gdhcp/client.c
@@ -268,70 +268,7 @@ static int send_release(GDHCPClient *dhcp_client,
                                                server, SERVER_PORT);
 }
 
-static gboolean interface_is_up(int index)
-{
-       int sk, err;
-       struct ifreq ifr;
-       gboolean ret = FALSE;
-
-       sk = socket(PF_INET, SOCK_DGRAM, 0);
-       if (sk < 0) {
-               perror("Open socket error");
-               return FALSE;
-       }
 
-       memset(&ifr, 0, sizeof(ifr));
-       ifr.ifr_ifindex = index;
-
-       err = ioctl(sk, SIOCGIFNAME, &ifr);
-       if (err < 0) {
-               perror("Get interface name error");
-               goto done;
-       }
-
-       err = ioctl(sk, SIOCGIFFLAGS, &ifr);
-       if (err < 0) {
-               perror("Get interface flags error");
-               goto done;
-       }
-
-       if (ifr.ifr_flags & IFF_UP)
-               ret = TRUE;
-
-done:
-       close(sk);
-
-       return ret;
-}
-
-static char *get_interface_name(int index)
-{
-       struct ifreq ifr;
-       int sk, err;
-
-       if (index < 0)
-               return NULL;
-
-       sk = socket(PF_INET, SOCK_DGRAM, 0);
-       if (sk < 0) {
-               perror("Open socket error");
-               return NULL;
-       }
-
-       memset(&ifr, 0, sizeof(ifr));
-       ifr.ifr_ifindex = index;
-
-       err = ioctl(sk, SIOCGIFNAME, &ifr);
-       if (err < 0) {
-               perror("Get interface name error");
-               close(sk);
-               return NULL;
-       }
-
-       close(sk);
-
-       return g_strdup(ifr.ifr_name);
-}
 
 static void get_interface_mac_address(int index, uint8_t *mac_address)
 {
diff --git a/gdhcp/common.c b/gdhcp/common.c
index fc95881..ccf40f3 100644
--- a/gdhcp/common.c
+++ b/gdhcp/common.c
@@ -22,11 +22,19 @@
 #include <config.h>
 #endif
 
+#include <stdio.h>
 #include <errno.h>
 #include <unistd.h>
+#include <sys/ioctl.h>
 #include <stdint.h>
+#include <stdlib.h>
 #include <string.h>
 #include <endian.h>
+#include <arpa/inet.h>
+#include <netpacket/packet.h>
+#include <net/ethernet.h>
+#include <net/if_arp.h>
+#include <linux/if.h>
 #include <netpacket/packet.h>
 #include <net/ethernet.h>
 
@@ -417,3 +425,68 @@ int dhcp_l3_socket(int port, const char *interface)
 
        return fd;
 }
+
+char *get_interface_name(int index)
+{
+       struct ifreq ifr;
+       int sk, err;
+
+       if (index < 0)
+               return NULL;
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0) {
+               perror("Open socket error");
+               return NULL;
+       }
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       err = ioctl(sk, SIOCGIFNAME, &ifr);
+       if (err < 0) {
+               perror("Get interface name error");
+               close(sk);
+               return NULL;
+       }
+
+       close(sk);
+
+       return g_strdup(ifr.ifr_name);
+}
+
+gboolean interface_is_up(int index)
+{
+       int sk, err;
+       struct ifreq ifr;
+       gboolean ret = FALSE;
+
+       sk = socket(PF_INET, SOCK_DGRAM, 0);
+       if (sk < 0) {
+               perror("Open socket error");
+               return FALSE;
+       }
+
+       memset(&ifr, 0, sizeof(ifr));
+       ifr.ifr_ifindex = index;
+
+       err = ioctl(sk, SIOCGIFNAME, &ifr);
+       if (err < 0) {
+               perror("Get interface name error");
+               goto done;
+       }
+
+       err = ioctl(sk, SIOCGIFFLAGS, &ifr);
+       if (err < 0) {
+               perror("Get interface flags error");
+               goto done;
+       }
+
+       if (ifr.ifr_flags & IFF_UP)
+               ret = TRUE;
+
+done:
+       close(sk);
+
+       return ret;
+}
diff --git a/gdhcp/common.h b/gdhcp/common.h
index 5b6fe58..3927c9a 100644
--- a/gdhcp/common.h
+++ b/gdhcp/common.h
@@ -51,6 +51,10 @@ static const uint8_t MAC_BCAST_ADDR[6] 
__attribute__((aligned(2))) = {
        0xff, 0xff, 0xff, 0xff, 0xff, 0xff
 };
 
+static const uint8_t MAC_ANY_ADDR[6] __attribute__((aligned(2))) = {
+       0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
 /* DHCP packet */
 #define DHCP_MAGIC              0x63825363
 #define DHCP_OPTIONS_BUFSIZE    308
@@ -171,3 +175,5 @@ int dhcp_send_kernel_packet(struct dhcp_packet *dhcp_pkt,
                        uint32_t dest_ip, int dest_port);
 int dhcp_l3_socket(int port, const char *interface);
 int dhcp_recv_l3_packet(struct dhcp_packet *packet, int fd);
+char *get_interface_name(int index);
+gboolean interface_is_up(int index);
-- 
1.6.1.3

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