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cxgbe: Deactivate upper layer drivers (like TOE) during detach.

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Reviewed by:	np
Sponsored by:	Chelsio Communications
Differential Revision:	https://reviews.freebsd.org/D35237

(cherry picked from commit 12b37f8f9c)
This commit is contained in:
John Baldwin 2022-05-17 16:33:49 -07:00
parent 6480563d06
commit 84fc080266
1 changed files with 38 additions and 0 deletions
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38
sys/dev/cxgbe/t4_main.c
View file

@ -859,6 +859,7 @@ static int hold_clip_addr(struct adapter *, struct t4_clip_addr *);
static int release_clip_addr(struct adapter *, struct t4_clip_addr *);
#ifdef TCP_OFFLOAD
static int toe_capability(struct vi_info *, bool);
static int t4_deactivate_all_uld(struct adapter *);
static void t4_async_event(struct adapter *);
#endif
#ifdef KERN_TLS
@ -1692,6 +1693,15 @@ t4_detach_common(device_t dev)
sc = device_get_softc(dev);
#ifdef TCP_OFFLOAD
rc = t4_deactivate_all_uld(sc);
if (rc) {
device_printf(dev,
"failed to detach upper layer drivers: %d\n", rc);
return (rc);
}
#endif
if (sc->cdev) {
destroy_dev(sc->cdev);
sc->cdev = NULL;
@ -12624,6 +12634,34 @@ t4_deactivate_uld(struct adapter *sc, int id)
return (rc);
}
static int
t4_deactivate_all_uld(struct adapter *sc)
{
int rc;
struct uld_info *ui;
rc = begin_synchronized_op(sc, NULL, SLEEP_OK, "t4detuld");
if (rc != 0)
return (ENXIO);
sx_slock(&t4_uld_list_lock);
SLIST_FOREACH(ui, &t4_uld_list, link) {
if (isset(&sc->active_ulds, ui->uld_id)) {
rc = ui->deactivate(sc);
if (rc != 0)
break;
clrbit(&sc->active_ulds, ui->uld_id);
ui->refcount--;
}
}
sx_sunlock(&t4_uld_list_lock);
end_synchronized_op(sc, 0);
return (rc);
}
static void
t4_async_event(struct adapter *sc)
{