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path: root/src/vnet/devices/af_packet/af_packet.c
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Diffstat (limited to 'src/vnet/devices/af_packet/af_packet.c')
-rw-r--r--src/vnet/devices/af_packet/af_packet.c50
1 files changed, 38 insertions, 12 deletions
diff --git a/src/vnet/devices/af_packet/af_packet.c b/src/vnet/devices/af_packet/af_packet.c
index 7464d4e629d..92bd109296c 100644
--- a/src/vnet/devices/af_packet/af_packet.c
+++ b/src/vnet/devices/af_packet/af_packet.c
@@ -19,6 +19,7 @@
#include <linux/if_ether.h>
#include <linux/if_packet.h>
+#include <dirent.h>
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
@@ -82,26 +83,35 @@ af_packet_fd_read_ready (unix_file_t * uf)
}
static int
-create_packet_v2_sock (u8 * name, tpacket_req_t * rx_req,
+is_bridge (const u8 * host_if_name)
+{
+ u8 *s;
+ DIR *dir = NULL;
+
+ s = format (0, "/sys/class/net/%s/bridge%c", host_if_name, 0);
+ dir = opendir ((char *) s);
+ vec_free (s);
+
+ if (dir)
+ {
+ closedir (dir);
+ return 0;
+ }
+
+ return -1;
+}
+
+static int
+create_packet_v2_sock (int host_if_index, tpacket_req_t * rx_req,
tpacket_req_t * tx_req, int *fd, u8 ** ring)
{
int ret, err;
struct sockaddr_ll sll;
- uint host_if_index;
int ver = TPACKET_V2;
socklen_t req_sz = sizeof (struct tpacket_req);
u32 ring_sz = rx_req->tp_block_size * rx_req->tp_block_nr +
tx_req->tp_block_size * tx_req->tp_block_nr;
- host_if_index = if_nametoindex ((const char *) name);
-
- if (!host_if_index)
- {
- DBG_SOCK ("Wrong host interface name");
- ret = VNET_API_ERROR_INVALID_INTERFACE;
- goto error;
- }
-
if ((*fd = socket (AF_PACKET, SOCK_RAW, htons (ETH_P_ALL))) < 0)
{
DBG_SOCK ("Failed to create socket");
@@ -190,6 +200,7 @@ af_packet_create_if (vlib_main_t * vm, u8 * host_if_name, u8 * hw_addr_set,
uword *p;
uword if_index;
u8 *host_if_name_dup = vec_dup (host_if_name);
+ int host_if_index = -1;
p = mhash_get (&apm->if_index_by_host_if_name, host_if_name);
if (p)
@@ -209,15 +220,29 @@ af_packet_create_if (vlib_main_t * vm, u8 * host_if_name, u8 * hw_addr_set,
tx_req->tp_block_nr = AF_PACKET_TX_BLOCK_NR;
tx_req->tp_frame_nr = AF_PACKET_TX_FRAME_NR;
- ret = create_packet_v2_sock (host_if_name, rx_req, tx_req, &fd, &ring);
+ host_if_index = if_nametoindex ((const char *) host_if_name);
+
+ if (!host_if_index)
+ {
+ DBG_SOCK ("Wrong host interface name");
+ return VNET_API_ERROR_INVALID_INTERFACE;
+ }
+
+ ret = create_packet_v2_sock (host_if_index, rx_req, tx_req, &fd, &ring);
if (ret != 0)
goto error;
+ ret = is_bridge (host_if_name);
+
+ if (ret == 0) /* is a bridge, ignore state */
+ host_if_index = -1;
+
/* So far everything looks good, let's create interface */
pool_get (apm->interfaces, apif);
if_index = apif - apm->interfaces;
+ apif->host_if_index = host_if_index;
apif->fd = fd;
apif->rx_ring = ring;
apif->tx_ring = ring + rx_req->tp_block_size * rx_req->tp_block_nr;
@@ -341,6 +366,7 @@ af_packet_delete_if (vlib_main_t * vm, u8 * host_if_name)
vec_free (apif->host_if_name);
apif->host_if_name = NULL;
+ apif->host_if_index = -1;
mhash_unset (&apm->if_index_by_host_if_name, host_if_name, &if_index);