d/numam-dpdk
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

net/af_packet: support MTU change

Browse Source 
The underlying Linux device's MTU is changed subject to the frame size
limitations during device creation.

Signed-off-by: Chas Williams <ciwillia@brocade.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
This commit is contained in:
Chas Williams 2017-01-05 08:53:42 -05:00 committed by Ferruh Yigit
parent 1b93c2aa81
commit cc68ac4847
1 changed files with 29 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

29
drivers/net/af_packet/rte_eth_af_packet.c
View File

@ -419,12 +419,41 @@ eth_tx_queue_setup(struct rte_eth_dev *dev,
return 0;
}
static int
eth_dev_mtu_set(struct rte_eth_dev *dev, uint16_t mtu)
{
struct pmd_internals *internals = dev->data->dev_private;
struct ifreq ifr = { .ifr_mtu = mtu };
int ret;
int s;
unsigned int data_size = internals->req.tp_frame_size -
TPACKET2_HDRLEN -
sizeof(struct sockaddr_ll);
if (mtu > data_size)
return -EINVAL;
s = socket(PF_INET, SOCK_DGRAM, 0);
if (s < 0)
return -EINVAL;
strncpy(ifr.ifr_name, internals->if_name, IFNAMSIZ);
ret = ioctl(s, SIOCSIFMTU, &ifr);
close(s);
if (ret < 0)
return -EINVAL;
return 0;
}
static const struct eth_dev_ops ops = {
.dev_start = eth_dev_start,
.dev_stop = eth_dev_stop,
.dev_close = eth_dev_close,
.dev_configure = eth_dev_configure,
.dev_infos_get = eth_dev_info,
.mtu_set = eth_dev_mtu_set,
.rx_queue_setup = eth_rx_queue_setup,
.tx_queue_setup = eth_tx_queue_setup,
.rx_queue_release = eth_queue_release,