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incubator-nuttx
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net/procfs: Support to show MTU in netdev statistics 

Usage:
ifconfig (interfacename)
example:
ifconfig eth0
eth0	Link encap:Ethernet HWaddr 42:d3:59:ad:5a:2f at RUNNING mtu 1500
	inet addr:10.0.1.2 DRaddr:10.0.1.1 Mask:255.255.255.0
	inet6 addr: fe80::40d3:59ff:fead:5a2f/64
	inet6 DRaddr: ::/64

Signed-off-by: wangchen <wangchen41@xiaomi.com>
This commit is contained in:
wangchen 2023-04-27 10:17:53 +08:00 committed by Xiang Xiao
parent d4e7fe55c7
commit d197ca9967
2 changed files with 6 additions and 3 deletions
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4
net/netdev/netdev_ioctl.c
View File

@ -920,13 +920,13 @@ static int netdev_ifr_ioctl(FAR struct socket *psock, int cmd,
case SIOCGLIFMTU: /* Get MTU size */
case SIOCGIFMTU: /* Get MTU size */
req->ifr_mtu = NETDEV_PKTSIZE(dev);
req->ifr_mtu = NETDEV_PKTSIZE(dev) - dev->d_llhdrlen;
break;
case SIOCSIFMTU: /* Set MTU size */
dev = netdev_ifr_dev(req);
if (dev)
{
NETDEV_PKTSIZE(dev) = req->ifr_mtu;
NETDEV_PKTSIZE(dev) = req->ifr_mtu + dev->d_llhdrlen;
}
break;

5
net/procfs/netdev_statistics.c
View File

@ -248,7 +248,10 @@ static int netprocfs_linklayer(FAR struct netprocfs_file_s *netfile)
}
len += snprintf(&netfile->line[len], NET_LINELEN - len,
" at %s\n", status);
" at %s", status);
len += snprintf(&netfile->line[len], NET_LINELEN - len,
" mtu %d\n", (dev->d_pktsize - dev->d_llhdrlen));
return len;
}