diff mbox series

[net-next,07/12] ionic: add rx filtering for hw timestamp steering

Message ID 20210401175610.44431-8-snelson@pensando.io
State New
Headers show
Series ionic: add PTP and hw clock support | expand

Commit Message

Shannon Nelson April 1, 2021, 5:56 p.m. UTC 
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>
---
 .../ethernet/pensando/ionic/ionic_rx_filter.c | 21 +++++++++++++++++++
 .../ethernet/pensando/ionic/ionic_rx_filter.h |  1 +
 2 files changed, 22 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.c b/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.c
index cd0076fc3044..d71316d9ded2 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.c
+++ b/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.c
@@ -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;
+}
diff --git a/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.h b/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.h
index cf8f4c0a961c..1ead48be3c83 100644
--- a/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.h
+++ b/drivers/net/ethernet/pensando/ionic/ionic_rx_filter.h
@@ -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_ */