jimzah/freebsd-src
1
0
Fork 0
mirror of https://github.com/freebsd/freebsd-src.git synced 2024-12-04 12:28:58 +00:00
Code Issues Actions 1 Packages Projects Releases Wiki Activity

When translating the interface name when "eth?" is given, do not

Browse Source 
use the internal index number as the unit number to compare with.
The first ethernet interface in Linux is called "eth0", whereas
our internal index starts wth 1 and is not unique to ethernet
interfaces (lo0 has index 1 for example). Instead, use a function-
local index number that starts with 0 and is incremented only
for ethernet interfaces. This way the unit number will match the
n-th ethernet interface in the system, which is exactly what it
means in Linux.

Tested by: Glenn Johnson <gjohnson@srrc.ars.usda.gov>
MFC after: 3 days
This commit is contained in:
Marcel Moolenaar 2001-12-04 03:55:10 +00:00
parent 54d8895199
commit 53b9d88fc4
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=87335
1 changed files with 9 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
sys/compat/linux/linux_ioctl.c
View File

@ -1793,6 +1793,7 @@ ifname_linux_to_bsd(const char *lxname, char *bsdname)
struct ifnet *ifp;
int len, unit;
char *ep;
int is_eth, index;
for (len = 0; len < LINUX_IFNAMSIZ; ++len)
if (!isalpha(lxname[len]))
@ -1802,13 +1803,18 @@ ifname_linux_to_bsd(const char *lxname, char *bsdname)
unit = (int)strtoul(lxname + len, &ep, 10);
if (ep == NULL || ep == lxname + len || ep >= lxname + LINUX_IFNAMSIZ)
return (NULL);
index = 0;
is_eth = (len == 3 && !strncmp(lxname, "eth", len)) ? 1 : 0;
TAILQ_FOREACH(ifp, &ifnet, if_link) {
/* allow Linux programs to use FreeBSD names */
/*
* Allow Linux programs to use FreeBSD names. Don't presume
* we never have an interface named "eth", so don't make
* the test optional based on is_eth.
*/
if (ifp->if_unit == unit && ifp->if_name[len] == '\0' &&
strncmp(ifp->if_name, lxname, len) == 0)
break;
if (ifp->if_index == unit && IFP_IS_ETH(ifp) &&
strncmp(lxname, "eth", len) == 0)
if (is_eth && IFP_IS_ETH(ifp) && unit == index++)
break;
}
if (ifp != NULL)