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ionic: add rx filtering for hw timestamp steering 

Add handling of the new Rx packet classification filter type.
This simple bit of classification allows for steering packets
to a separate Rx queue for processing.

Signed-off-by: Allen Hubbe <allenbh@pensando.io>
Signed-off-by: Shannon Nelson <snelson@pensando.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Shannon Nelson 2021-04-01 10:56:05 -07:00 committed by David S. Miller
parent 61db421da3
commit ab470bbe7a
2 changed files with 22 additions and 0 deletions
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21
drivers/net/ethernet/pensando/ionic/ionic_rx_filter.c
View File

@ -140,6 +140,9 @@ int ionic_rx_filter_save(struct ionic_lif *lif, u32 flow_id, u16 rxq_index,
case IONIC_RX_FILTER_MATCH_MAC_VLAN:
key = le16_to_cpu(ac->mac_vlan.vlan);
break;
case IONIC_RX_FILTER_STEER_PKTCLASS:
key = 0;
break;
default:
return -EINVAL;
}
@ -210,3 +213,21 @@ struct ionic_rx_filter *ionic_rx_filter_by_addr(struct ionic_lif *lif,
return NULL;
}
struct ionic_rx_filter *ionic_rx_filter_rxsteer(struct ionic_lif *lif)
{
struct ionic_rx_filter *f;
struct hlist_head *head;
unsigned int key;
key = hash_32(0, IONIC_RX_FILTER_HASH_BITS);
head = &lif->rx_filters.by_hash[key];
hlist_for_each_entry(f, head, by_hash) {
if (le16_to_cpu(f->cmd.match) != IONIC_RX_FILTER_STEER_PKTCLASS)
continue;
return f;
}
return NULL;
}

1
drivers/net/ethernet/pensando/ionic/ionic_rx_filter.h
View File

@ -31,5 +31,6 @@ int ionic_rx_filter_save(struct ionic_lif *lif, u32 flow_id, u16 rxq_index,
u32 hash, struct ionic_admin_ctx *ctx);
struct ionic_rx_filter *ionic_rx_filter_by_vlan(struct ionic_lif *lif, u16 vid);
struct ionic_rx_filter *ionic_rx_filter_by_addr(struct ionic_lif *lif, const u8 *addr);
struct ionic_rx_filter *ionic_rx_filter_rxsteer(struct ionic_lif *lif);
#endif /* _IONIC_RX_FILTER_H_ */