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linux: require vnet(9) context in ifname_bsd_to_linux_name()

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This function is used by netlink(9) only.  The netlink(9) taskqueue thread
runs in the vnet of the socket whose request the thread is processing
right now.  This is a correct vnet and resetting it to vnet0 is incorrect.
If the function is to be used by any other caller in addition to
netlink(9), it would be caller's responsiblity to provide correct vnet(9).

Reviewed by:		melifaro, dchagin
Differential Revision:	https://reviews.freebsd.org/D44191
PR:			277286

(cherry picked from commit 2f5a315b307447f91891c96fb23c7333fa406f2f)
This commit is contained in:
Gleb Smirnoff 2024-03-03 12:56:58 -08:00
parent 0148ccb95a
commit f45ecf5fe4
1 changed files with 2 additions and 2 deletions
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4
sys/compat/linux/linux.c
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@ -253,14 +253,14 @@ ifname_bsd_to_linux_name(const char *bsdname, char *lxname, size_t len)
struct ifnet *ifp;
int ret;
CURVNET_ASSERT_SET();
ret = 0;
CURVNET_SET(TD_TO_VNET(curthread));
NET_EPOCH_ENTER(et);
ifp = ifunit(bsdname);
if (ifp != NULL)
ret = ifname_bsd_to_linux_ifp(ifp, lxname, len);
NET_EPOCH_EXIT(et);
CURVNET_RESTORE();
return (ret);
}