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-rw-r--r--src/vnet/devices/af_packet/af_packet.c50
-rw-r--r--src/vnet/devices/af_packet/af_packet.h1
-rw-r--r--src/vnet/devices/af_packet/device.c42
3 files changed, 78 insertions, 15 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);
diff --git a/src/vnet/devices/af_packet/af_packet.h b/src/vnet/devices/af_packet/af_packet.h
index 77a2c7a3753..194977f03c1 100644
--- a/src/vnet/devices/af_packet/af_packet.h
+++ b/src/vnet/devices/af_packet/af_packet.h
@@ -24,6 +24,7 @@ typedef struct
CLIB_CACHE_LINE_ALIGN_MARK (cacheline0);
clib_spinlock_t lockp;
u8 *host_if_name;
+ int host_if_index;
int fd;
struct tpacket_req *rx_req;
struct tpacket_req *tx_req;
diff --git a/src/vnet/devices/af_packet/device.c b/src/vnet/devices/af_packet/device.c
index 2ba3f579c00..2a17e6b3456 100644
--- a/src/vnet/devices/af_packet/device.c
+++ b/src/vnet/devices/af_packet/device.c
@@ -18,6 +18,8 @@
*/
#include <linux/if_packet.h>
+#include <sys/ioctl.h>
+#include <net/if.h>
#include <vlib/vlib.h>
#include <vlib/unix/unix.h>
@@ -205,17 +207,51 @@ af_packet_interface_admin_up_down (vnet_main_t * vnm, u32 hw_if_index,
af_packet_if_t *apif =
pool_elt_at_index (apm->interfaces, hw->dev_instance);
u32 hw_flags;
+ int rv, fd = socket (AF_UNIX, SOCK_DGRAM, 0);
+ struct ifreq ifr;
+
+ /* if interface is a bridge ignore */
+ if (apif->host_if_index < 0)
+ return 0; /* no error */
+
+ /* use host_if_index in case host name has changed */
+ ifr.ifr_ifindex = apif->host_if_index;
+ if ((rv = ioctl (fd, SIOCGIFNAME, &ifr)) < 0)
+ {
+ clib_unix_warning ("af_packet_%s ioctl could not retrieve eth name",
+ apif->host_if_name);
+ }
apif->is_admin_up = (flags & VNET_SW_INTERFACE_FLAG_ADMIN_UP) != 0;
+ if ((rv = ioctl (fd, SIOCGIFFLAGS, &ifr)) < 0)
+ {
+ clib_unix_warning ("af_packet_%s error: %d",
+ apif->is_admin_up ? "up" : "down", rv);
+ }
+
if (apif->is_admin_up)
- hw_flags = VNET_HW_INTERFACE_FLAG_LINK_UP;
+ {
+ hw_flags = VNET_HW_INTERFACE_FLAG_LINK_UP;
+ ifr.ifr_flags |= IFF_UP;
+ }
else
- hw_flags = 0;
+ {
+ hw_flags = 0;
+ ifr.ifr_flags &= ~IFF_UP;
+ }
+
+ if ((rv = ioctl (fd, SIOCSIFFLAGS, &ifr)) < 0)
+ {
+ clib_unix_warning ("af_packet_%s error: %d",
+ apif->is_admin_up ? "up" : "down", rv);
+ }
vnet_hw_interface_set_flags (vnm, hw_if_index, hw_flags);
- return 0;
+ close (fd);
+
+ return 0; /* no error */
}
static clib_error_t *