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cxgbe(4): Add a driver ioctl to set the filter mask.

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Allow the filter mask (aka the hashfilter mode when hashfilters are
in use) to be set any time it is safe to do so.  The requested mask
must be a subset of the filter mode already.  The driver will not change
the mode or ingress config just to support a new mask.

MFC after:	2 weeks
Sponsored by:	Chelsio Communications
This commit is contained in:
Navdeep Parhar 2021-02-19 13:47:18 -08:00
parent 7ac8040a99
commit c91dda5ad9
4 changed files with 48 additions and 0 deletions
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1
sys/dev/cxgbe/adapter.h
View file

@ -1337,6 +1337,7 @@ void cxgbe_ratelimit_query(struct ifnet *, struct if_ratelimit_query_results *);
/* t4_filter.c */
int get_filter_mode(struct adapter *, uint32_t *);
int set_filter_mode(struct adapter *, uint32_t);
int set_filter_mask(struct adapter *, uint32_t);
int get_filter(struct adapter *, struct t4_filter *);
int set_filter(struct adapter *, struct t4_filter *);
int del_filter(struct adapter *, struct t4_filter *);

42
sys/dev/cxgbe/t4_filter.c
View file

@ -543,6 +543,48 @@ done:
return (rc);
}
int
set_filter_mask(struct adapter *sc, uint32_t mode)
{
struct tp_params *tp = &sc->params.tp;
int rc, iconf;
uint16_t fmask;
iconf = mode_to_iconf(mode);
fmask = mode_to_fconf(mode);
if ((iconf == -1 || iconf == tp->vnic_mode) && fmask == tp->filter_mask)
return (0); /* Nothing to do */
/*
* We aren't going to change the global filter mode or VNIC mode here.
* The given filter mask must conform to them.
*/
if ((fmask | tp->filter_mode) != tp->filter_mode)
return (EINVAL);
if (iconf != -1 && iconf != tp->vnic_mode)
return (EINVAL);
rc = begin_synchronized_op(sc, NULL, SLEEP_OK | INTR_OK, "t4sethfm");
if (rc)
return (rc);
if (sc->tids.tids_in_use > 0) { /* TOE or hashfilters active */
rc = EBUSY;
goto done;
}
#ifdef TCP_OFFLOAD
if (uld_active(sc, ULD_TOM)) {
rc = EBUSY;
goto done;
}
#endif
rc = -t4_set_filter_cfg(sc, -1, fmask, -1);
done:
end_synchronized_op(sc, 0);
return (rc);
}
static inline uint64_t
get_filter_hits(struct adapter *sc, uint32_t tid)
{

2
sys/dev/cxgbe/t4_ioctl.h
View file

@ -63,6 +63,7 @@ enum {
T4_LOAD_BOOT, /* flash boot rom */
T4_LOAD_BOOTCFG, /* flash bootcfg */
T4_CUDBG_DUMP, /* debug dump of chip state */
T4_SET_FILTER_MASK, /* set filter mask (hashfilter mode) */
};
struct t4_reg {
@ -429,4 +430,5 @@ struct t4_offload_policy {
#define CHELSIO_T4_LOAD_BOOTCFG _IOW('f', T4_LOAD_BOOTCFG, struct t4_data)
#define CHELSIO_T4_CUDBG_DUMP _IOWR('f', T4_CUDBG_DUMP, struct t4_cudbg_dump)
#define CHELSIO_T4_SET_OFLD_POLICY _IOW('f', T4_SET_OFLD_POLICY, struct t4_offload_policy)
#define CHELSIO_T4_SET_FILTER_MASK _IOW('f', T4_SET_FILTER_MASK, uint32_t)
#endif

3
sys/dev/cxgbe/t4_main.c
View file

@ -10970,6 +10970,9 @@ t4_ioctl(struct cdev *dev, unsigned long cmd, caddr_t data, int fflag,
case CHELSIO_T4_SET_FILTER_MODE:
rc = set_filter_mode(sc, *(uint32_t *)data);
break;
case CHELSIO_T4_SET_FILTER_MASK:
rc = set_filter_mask(sc, *(uint32_t *)data);
break;
case CHELSIO_T4_GET_FILTER:
rc = get_filter(sc, (struct t4_filter *)data);
break;