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if_pflog: Limit the maximum unit via the new KPI

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The cloner has the ability to limit the maximum unit. Employ it to do
that rather than roll our own.

No functional change intended.

Reviewed by:	kp
MFC after:	2 weeks
Differential Revision:	https://reviews.freebsd.org/D45767
This commit is contained in:
Zhenlei Huang 2024-07-03 21:14:09 +08:00
parent a2cac544a6
commit 07d138afc7
1 changed files with 5 additions and 4 deletions
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9
sys/netpfil/pf/if_pflog.c
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@ -105,14 +105,16 @@ VNET_DEFINE(struct ifnet *, pflogifs[PFLOGIFS_MAX]); /* for fast access */
static void
pflogattach(int npflog __unused)
{
int i;
int i;
for (i = 0; i < PFLOGIFS_MAX; i++)
V_pflogifs[i] = NULL;
struct if_clone_addreq req = {
.create_f = pflog_clone_create,
.destroy_f = pflog_clone_destroy,
.flags = IFC_F_AUTOUNIT,
.flags = IFC_F_AUTOUNIT | IFC_F_LIMITUNIT,
.maxunit = PFLOGIFS_MAX - 1,
};
V_pflog_cloner = ifc_attach_cloner(pflogname, &req);
struct ifc_data ifd = { .unit = 0 };
@ -125,8 +127,7 @@ pflog_clone_create(struct if_clone *ifc, char *name, size_t maxlen,
{
struct ifnet *ifp;
if (ifd->unit >= PFLOGIFS_MAX)
return (EINVAL);
MPASS(ifd->unit < PFLOGIFS_MAX);
ifp = if_alloc(IFT_PFLOG);
if_initname(ifp, pflogname, ifd->unit);