diff options
Diffstat (limited to 'src/vnet/devices/af_packet/af_packet.c')
| -rw-r--r-- | src/vnet/devices/af_packet/af_packet.c | 45 |
1 files changed, 41 insertions, 4 deletions
diff --git a/src/vnet/devices/af_packet/af_packet.c b/src/vnet/devices/af_packet/af_packet.c index 46bb42a4f47..500460126a8 100644 --- a/src/vnet/devices/af_packet/af_packet.c +++ b/src/vnet/devices/af_packet/af_packet.c @@ -19,6 +19,8 @@ #include <linux/if_ether.h> #include <linux/if_packet.h> +#include <sys/ioctl.h> +#include <net/if.h> #include <dirent.h> #include <sys/stat.h> #include <sys/types.h> @@ -212,9 +214,10 @@ af_packet_create_if (vlib_main_t * vm, u8 * host_if_name, u8 * hw_addr_set, u32 * sw_if_index) { af_packet_main_t *apm = &af_packet_main; - int ret, fd = -1; + int ret, fd = -1, fd2 = -1; struct tpacket_req *rx_req = 0; struct tpacket_req *tx_req = 0; + struct ifreq ifr; u8 *ring = 0; af_packet_if_t *apif = 0; u8 hw_addr[6]; @@ -248,14 +251,46 @@ 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; - host_if_index = if_nametoindex ((const char *) host_if_name); + /* + * make sure host side of interface is 'UP' before binding AF_PACKET + * socket on it. + */ + if ((fd2 = socket (AF_UNIX, SOCK_DGRAM, 0)) < 0) + { + DBG_SOCK ("Failed to create socket"); + ret = VNET_API_ERROR_SYSCALL_ERROR_1; + goto error; + } - if (!host_if_index) + clib_memcpy (ifr.ifr_name, (const char *) host_if_name, + vec_len (host_if_name)); + if ((ret = ioctl (fd2, SIOCGIFINDEX, &ifr)) < 0) { - DBG_SOCK ("Wrong host interface name"); + clib_unix_warning ("af_packet_create error: %d", ret); + close (fd2); return VNET_API_ERROR_INVALID_INTERFACE; } + host_if_index = ifr.ifr_ifindex; + if ((ret = ioctl (fd2, SIOCGIFFLAGS, &ifr)) < 0) + { + clib_unix_warning ("af_packet_create error: %d", ret); + goto error; + } + + if (!(ifr.ifr_flags & IFF_UP)) + { + ifr.ifr_flags |= IFF_UP; + if ((ret = ioctl (fd2, SIOCSIFFLAGS, &ifr)) < 0) + { + clib_unix_warning ("af_packet_create error: %d", ret); + goto error; + } + } + + if (fd2 > -1) + close (fd2); + ret = create_packet_v2_sock (host_if_index, rx_req, tx_req, &fd, &ring); if (ret != 0) @@ -347,6 +382,8 @@ af_packet_create_if (vlib_main_t * vm, u8 * host_if_name, u8 * hw_addr_set, return 0; error: + if (fd2 > -1) + close (fd2); vec_free (host_if_name_dup); vec_free (rx_req); vec_free (tx_req); |