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Allocate one of the spare ifnet integer fields to hold if_drv_flags,

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which in the future will hold IFF_OACTIVE and IFF_RUNNING, and have
its access synchronized by the device driver rather than the
protocol stack.  This will avoid potential races in the management
of flags in if_flags.

Discussed with:	various (scottl, jhb, ...)
MFC after:	1 week
This commit is contained in:
Robert Watson 2005-07-21 22:01:06 +00:00
parent 4bf21bfef9
commit 638ccea02a
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=148265
1 changed files with 1 additions and 1 deletions
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2
sys/net/if_var.h
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@ -161,7 +161,7 @@ struct ifnet {
void *if_spare1; /* spare pointer 1 */
void *if_spare2; /* spare pointer 2 */
void *if_spare3; /* spare pointer 3 */
u_int if_spare_flags1; /* spare flags 1 */
int if_drv_flags; /* driver-managed status flags */
u_int if_spare_flags2; /* spare flags 2 */
struct ifaltq if_snd; /* output queue (includes altq) */
const u_int8_t *if_broadcastaddr; /* linklevel broadcast bytestring */