cxgb4: Enable hash filter with offload

Hash (exact-match) filters used for offloading flows share the
same active region resources on the chip with upper layer drivers,
like iw_cxgb4, chcr, etc. Currently, only either Hash filters
or ULDs can use the active region resources, but not both. Hence,
use the new firmware configuration parameters (when available)
to allow both the Hash filters and ULDs to share the
active region simultaneously.

Signed-off-by: Vishal Kulkarni <vishal@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 26 insertions, 12 deletions

diff --git a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
index 4107007b6ec4..0f0b3f4a039d 100644
--- a/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/cxgb4_filter.c
@@ -1041,7 +1041,7 @@ static void mk_act_open_req6(struct filter_entry *f, struct sk_buff *skb,
 			    RSS_QUEUE_V(f->fs.iq) |
 			    TX_QUEUE_V(f->fs.nat_mode) |
 			    T5_OPT_2_VALID_F |
-			    RX_CHANNEL_F |
+			    RX_CHANNEL_V(cxgb4_port_e2cchan(f->dev)) |
 			    CONG_CNTRL_V((f->fs.action == FILTER_DROP) |
 					 (f->fs.dirsteer << 1)) |
 			    PACE_V((f->fs.maskhash) |
@@ -1081,7 +1081,7 @@ static void mk_act_open_req(struct filter_entry *f, struct sk_buff *skb,
 			    RSS_QUEUE_V(f->fs.iq) |
 			    TX_QUEUE_V(f->fs.nat_mode) |
 			    T5_OPT_2_VALID_F |
-			    RX_CHANNEL_F |
+			    RX_CHANNEL_V(cxgb4_port_e2cchan(f->dev)) |
 			    CONG_CNTRL_V((f->fs.action == FILTER_DROP) |
 					 (f->fs.dirsteer << 1)) |
 			    PACE_V((f->fs.maskhash) |
@@ -1833,24 +1833,38 @@ void filter_rpl(struct adapter *adap, const struct cpl_set_tcb_rpl *rpl)
 	}
 }
 
-int init_hash_filter(struct adapter *adap)
+void init_hash_filter(struct adapter *adap)
 {
+	u32 reg;
+
 	/* On T6, verify the necessary register configs and warn the user in
 	 * case of improper config
 	 */
 	if (is_t6(adap->params.chip)) {
-		if (TCAM_ACTV_HIT_G(t4_read_reg(adap, LE_DB_RSP_CODE_0_A)) != 4)
-			goto err;
+		if (is_offload(adap)) {
+			if (!(t4_read_reg(adap, TP_GLOBAL_CONFIG_A)
+			   & ACTIVEFILTERCOUNTS_F)) {
+				dev_err(adap->pdev_dev, "Invalid hash filter + ofld config\n");
+				return;
+			}
+		} else {
+			reg = t4_read_reg(adap, LE_DB_RSP_CODE_0_A);
+			if (TCAM_ACTV_HIT_G(reg) != 4) {
+				dev_err(adap->pdev_dev, "Invalid hash filter config\n");
+				return;
+			}
+
+			reg = t4_read_reg(adap, LE_DB_RSP_CODE_1_A);
+			if (HASH_ACTV_HIT_G(reg) != 4) {
+				dev_err(adap->pdev_dev, "Invalid hash filter config\n");
+				return;
+			}
+		}
 
-		if (HASH_ACTV_HIT_G(t4_read_reg(adap, LE_DB_RSP_CODE_1_A)) != 4)
-			goto err;
 	} else {
 		dev_err(adap->pdev_dev, "Hash filter supported only on T6\n");
-		return -EINVAL;
+		return;
 	}
+
 	adap->params.hash_filter = 1;
-	return 0;
-err:
-	dev_warn(adap->pdev_dev, "Invalid hash filter config!\n");
-	return -EINVAL;
 }