diff options
| author |   Ray Kinsella <ray.kinsella@intel.com> | 2017-05-15 11:52:43 +0100 |
|---|---|---|
| committer |   Neale Ranns <nranns@cisco.com> | 2017-05-15 18:20:30 +0000 |
| commit | 7bfa119ead548fcca869bac7e777ce7137dc933b (patch) | |
| tree | ea03411694d5a4ca9b6b726df7964346da1234c8 /src/vnet/devices | |
| parent | ed76d5f2e383834d8c6aae8ab3b89cf7d2479d0c (diff) | |
af_packet: support changing the mtu size
Added support to the af_packet device to change the MTU size.
Change-Id: I9c9e1e17323721f3efccf70a10b753e12eef94d5
Signed-off-by: Ray Kinsella <ray.kinsella@intel.com>
Diffstat (limited to 'src/vnet/devices')
| -rw-r--r-- | src/vnet/devices/af_packet/af_packet.c | 24 |
1 files changed, 23 insertions, 1 deletions
diff --git a/src/vnet/devices/af_packet/af_packet.c b/src/vnet/devices/af_packet/af_packet.c index cb52e6daa04..ea52878dbcf 100644 --- a/src/vnet/devices/af_packet/af_packet.c +++ b/src/vnet/devices/af_packet/af_packet.c @@ -20,6 +20,9 @@ #include <linux/if_ether.h> #include <linux/if_packet.h> #include <dirent.h> +#include <sys/stat.h> +#include <sys/types.h> +#include <fcntl.h> #include <vlib/vlib.h> #include <vlib/unix/unix.h> @@ -61,7 +64,26 @@ static u32 af_packet_eth_flag_change (vnet_main_t * vnm, vnet_hw_interface_t * hi, u32 flags) { - /* nothing for now */ + clib_error_t *error; + u8 *s; + af_packet_main_t *apm = &af_packet_main; + af_packet_if_t *apif = + pool_elt_at_index (apm->interfaces, hi->dev_instance); + + if (ETHERNET_INTERFACE_FLAG_MTU == (flags & ETHERNET_INTERFACE_FLAG_MTU)) + { + s = format (0, "/sys/class/net/%s/mtu%c", apif->host_if_name, 0); + + error = vlib_sysfs_write ((char *) s, "%d", hi->max_packet_bytes); + vec_free (s); + + if (error) + { + clib_error_report (error); + return VNET_API_ERROR_SYSCALL_ERROR_1; + } + } + return 0; } |