bnx2x: VF RSS support - VF side

In this patch capabilities are added to the Vf driver to request
multiple queues over the VF PF channel, and the logic for requesting
rss configuration for said queues.

Signed-off-by: Ariel Elior <ariele@broadcom.com>
Signed-off-by: Eilong Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 43 insertions, 42 deletions

diff --git a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
index e7400d9d60c4..8d726f6e1c52 100644
--- a/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
+++ b/drivers/net/ethernet/broadcom/bnx2x/bnx2x_cmn.c
@@ -1942,7 +1942,7 @@ static void bnx2x_set_rx_buf_size(struct bnx2x *bp)
 	}
 }
 
-static int bnx2x_init_rss_pf(struct bnx2x *bp)
+static int bnx2x_init_rss(struct bnx2x *bp)
 {
 	int i;
 	u8 num_eth_queues = BNX2X_NUM_ETH_QUEUES(bp);
@@ -1966,8 +1966,8 @@ static int bnx2x_init_rss_pf(struct bnx2x *bp)
 	return bnx2x_config_rss_eth(bp, bp->port.pmf || !CHIP_IS_E1x(bp));
 }
 
-int bnx2x_config_rss_pf(struct bnx2x *bp, struct bnx2x_rss_config_obj *rss_obj,
-			bool config_hash)
+int bnx2x_rss(struct bnx2x *bp, struct bnx2x_rss_config_obj *rss_obj,
+	      bool config_hash, bool enable)
 {
 	struct bnx2x_config_rss_params params = {NULL};
 
@@ -1982,17 +1982,21 @@ int bnx2x_config_rss_pf(struct bnx2x *bp, struct bnx2x_rss_config_obj *rss_obj,
 
 	__set_bit(RAMROD_COMP_WAIT, &params.ramrod_flags);
 
-	__set_bit(BNX2X_RSS_MODE_REGULAR, &params.rss_flags);
-
-	/* RSS configuration */
-	__set_bit(BNX2X_RSS_IPV4, &params.rss_flags);
-	__set_bit(BNX2X_RSS_IPV4_TCP, &params.rss_flags);
-	__set_bit(BNX2X_RSS_IPV6, &params.rss_flags);
-	__set_bit(BNX2X_RSS_IPV6_TCP, &params.rss_flags);
-	if (rss_obj->udp_rss_v4)
-		__set_bit(BNX2X_RSS_IPV4_UDP, &params.rss_flags);
-	if (rss_obj->udp_rss_v6)
-		__set_bit(BNX2X_RSS_IPV6_UDP, &params.rss_flags);
+	if (enable) {
+		__set_bit(BNX2X_RSS_MODE_REGULAR, &params.rss_flags);
+
+		/* RSS configuration */
+		__set_bit(BNX2X_RSS_IPV4, &params.rss_flags);
+		__set_bit(BNX2X_RSS_IPV4_TCP, &params.rss_flags);
+		__set_bit(BNX2X_RSS_IPV6, &params.rss_flags);
+		__set_bit(BNX2X_RSS_IPV6_TCP, &params.rss_flags);
+		if (rss_obj->udp_rss_v4)
+			__set_bit(BNX2X_RSS_IPV4_UDP, &params.rss_flags);
+		if (rss_obj->udp_rss_v6)
+			__set_bit(BNX2X_RSS_IPV6_UDP, &params.rss_flags);
+	} else {
+		__set_bit(BNX2X_RSS_MODE_DISABLED, &params.rss_flags);
+	}
 
 	/* Hash bits */
 	params.rss_result_mask = MULTI_MASK;
@@ -2001,11 +2005,14 @@ int bnx2x_config_rss_pf(struct bnx2x *bp, struct bnx2x_rss_config_obj *rss_obj,
 
 	if (config_hash) {
 		/* RSS keys */
-		prandom_bytes(params.rss_key, sizeof(params.rss_key));
+		prandom_bytes(params.rss_key, T_ETH_RSS_KEY * 4);
 		__set_bit(BNX2X_RSS_SET_SRCH, &params.rss_flags);
 	}
 
-	return bnx2x_config_rss(bp, &params);
+	if (IS_PF(bp))
+		return bnx2x_config_rss(bp, &params);
+	else
+		return bnx2x_vfpf_config_rss(bp, &params);
 }
 
 static int bnx2x_init_hw(struct bnx2x *bp, u32 load_code)
@@ -2645,38 +2652,32 @@ int bnx2x_nic_load(struct bnx2x *bp, int load_mode)
 
 		/* initialize FW coalescing state machines in RAM */
 		bnx2x_update_coalesce(bp);
+	}
 
-		/* setup the leading queue */
-		rc = bnx2x_setup_leading(bp);
-		if (rc) {
-			BNX2X_ERR("Setup leading failed!\n");
-			LOAD_ERROR_EXIT(bp, load_error3);
-		}
-
-		/* set up the rest of the queues */
-		for_each_nondefault_eth_queue(bp, i) {
-			rc = bnx2x_setup_queue(bp, &bp->fp[i], 0);
-			if (rc) {
-				BNX2X_ERR("Queue setup failed\n");
-				LOAD_ERROR_EXIT(bp, load_error3);
-			}
-		}
+	/* setup the leading queue */
+	rc = bnx2x_setup_leading(bp);
+	if (rc) {
+		BNX2X_ERR("Setup leading failed!\n");
+		LOAD_ERROR_EXIT(bp, load_error3);
+	}
 
-		/* setup rss */
-		rc = bnx2x_init_rss_pf(bp);
+	/* set up the rest of the queues */
+	for_each_nondefault_eth_queue(bp, i) {
+		if (IS_PF(bp))
+			rc = bnx2x_setup_queue(bp, &bp->fp[i], false);
+		else /* VF */
+			rc = bnx2x_vfpf_setup_q(bp, &bp->fp[i], false);
 		if (rc) {
-			BNX2X_ERR("PF RSS init failed\n");
+			BNX2X_ERR("Queue %d setup failed\n", i);
 			LOAD_ERROR_EXIT(bp, load_error3);
 		}
+	}
 
-	} else { /* vf */
-		for_each_eth_queue(bp, i) {
-			rc = bnx2x_vfpf_setup_q(bp, i);
-			if (rc) {
-				BNX2X_ERR("Queue setup failed\n");
-				LOAD_ERROR_EXIT(bp, load_error3);
-			}
-		}
+	/* setup rss */
+	rc = bnx2x_init_rss(bp);
+	if (rc) {
+		BNX2X_ERR("PF RSS init failed\n");
+		LOAD_ERROR_EXIT(bp, load_error3);
 	}
 
 	/* Now when Clients are configured we are ready to work */