Re: kern/48964 (In urndis(4), initialization of ifnet structure is not enough, cause panic.)

[Yasushi Oshima <oshima-ya%yagoto-urayama.jp@localhost>]

The following reply was made to PR kern/48964; it has been noted by GNATS.

From: Yasushi Oshima <oshima-ya%yagoto-urayama.jp@localhost>
To: gnats-bugs%NetBSD.org@localhost, skrll%NetBSD.org@localhost, 
gnats-admin%netbsd.org@localhost,
 netbsd-bugs%netbsd.org@localhost
Cc: 
Subject: Re: kern/48964 (In urndis(4), initialization of ifnet structure is
 not enough, cause panic.)
Date: Mon, 07 Jul 2014 02:31:40 +0900 (JST)

 >  Perhaps you can look at the IFF_RUNNING
 > check in urndis_init?
 
 [from diff]:
 
        if (ifp->if_flags & IFF_RUNNING)
 -         return;
 +         return EBUSY;
 
 
 I don't know whether if_init() will be called or not when IFF_RUNNING flag is 
ON,
 it will depend on the design of network (or ethernet) driver.
 
 It seems that many nic drivers are stopping I/O, resetting and re-initializing,
 or some drivers skip lator and return with 0 in this case.
 at least I could not find another drivers which returns with any ERROR.
 
 Thanks.
 
 -- 
 Yasushi Oshima