[dpdk-dev] [PATCH v4] net/i40e: fix VF RSS configuration

[Alvin Zhang <alvinx.zhang@intel.com>]

The kernel driver supports VF RSS configuration message
"VIRTCHNL_OP_GET_RSS_HENA_CAPS and VIRTCHNL_OP_SET_RSS_HENA",
this patch adds PMD support for these messages.

Fixes: b81295c474b0 ("net/i40e: add user callback for VF to PF message")
Cc: stable@dpdk.org

Signed-off-by: Alvin Zhang <alvinx.zhang@intel.com>
---

v2, v3, v4: Update codes according to comments.
---
 drivers/net/i40e/i40e_pf.c | 61 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 61 insertions(+)

diff --git a/drivers/net/i40e/i40e_pf.c b/drivers/net/i40e/i40e_pf.c
index 9804ed4..e2d8b2b 100644
--- a/drivers/net/i40e/i40e_pf.c
+++ b/drivers/net/i40e/i40e_pf.c
@@ -29,6 +29,28 @@
 
 #define I40E_CFG_CRCSTRIP_DEFAULT 1
 
+/* Supported RSS offloads */
+#define I40E_DEFAULT_RSS_HENA ( \
+	BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_UDP) | \
+	BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_SCTP) | \
+	BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP) | \
+	BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_OTHER) | \
+	BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV4) | \
+	BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_UDP) | \
+	BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_TCP) | \
+	BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_SCTP) | \
+	BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_OTHER) | \
+	BIT_ULL(I40E_FILTER_PCTYPE_FRAG_IPV6) | \
+	BIT_ULL(I40E_FILTER_PCTYPE_L2_PAYLOAD))
+
+#define I40E_DEFAULT_RSS_HENA_EXPANDED (I40E_DEFAULT_RSS_HENA | \
+	BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV4_TCP_SYN_NO_ACK) | \
+	BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV4_UDP) | \
+	BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV4_UDP) | \
+	BIT_ULL(I40E_FILTER_PCTYPE_NONF_IPV6_TCP_SYN_NO_ACK) | \
+	BIT_ULL(I40E_FILTER_PCTYPE_NONF_UNICAST_IPV6_UDP) | \
+	BIT_ULL(I40E_FILTER_PCTYPE_NONF_MULTICAST_IPV6_UDP))
+
 static int
 i40e_pf_host_switch_queues(struct i40e_pf_vf *vf,
 			   struct virtchnl_queue_select *qsel,
@@ -1288,6 +1310,37 @@
 				(u8 *)vfres, sizeof(*vfres));
 }
 
+static void
+i40e_pf_host_process_cmd_get_rss_hena(struct i40e_pf_vf *vf)
+{
+	struct virtchnl_rss_hena vrh = {0};
+	struct i40e_pf *pf = vf->pf;
+
+	if (pf->adapter->hw.mac.type == I40E_MAC_X722)
+		vrh.hena = I40E_DEFAULT_RSS_HENA_EXPANDED;
+	else
+		vrh.hena = I40E_DEFAULT_RSS_HENA;
+
+	i40e_pf_host_send_msg_to_vf(vf, VIRTCHNL_OP_GET_RSS_HENA_CAPS,
+				    I40E_SUCCESS, (uint8_t *)&vrh, sizeof(vrh));
+}
+
+static void
+i40e_pf_host_process_cmd_set_rss_hena(struct i40e_pf_vf *vf, uint8_t *msg)
+{
+	struct virtchnl_rss_hena *vrh =
+		(struct virtchnl_rss_hena *)msg;
+	struct i40e_hw *hw = &vf->pf->adapter->hw;
+
+	i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(0, vf->vf_idx),
+			  (uint32_t)vrh->hena);
+	i40e_write_rx_ctl(hw, I40E_VFQF_HENA1(1, vf->vf_idx),
+			  (uint32_t)(vrh->hena >> 32));
+
+	i40e_pf_host_send_msg_to_vf(vf, VIRTCHNL_OP_SET_RSS_HENA,
+				    I40E_SUCCESS, NULL, 0);
+}
+
 void
 i40e_pf_host_handle_vf_msg(struct rte_eth_dev *dev,
 			   uint16_t abs_vf_id, uint32_t opcode,
@@ -1458,6 +1511,14 @@
 		PMD_DRV_LOG(INFO, "OP_REQUEST_QUEUES received");
 		i40e_pf_host_process_cmd_request_queues(vf, msg);
 		break;
+	case VIRTCHNL_OP_GET_RSS_HENA_CAPS:
+		PMD_DRV_LOG(INFO, "OP_GET_RSS_HENA_CAPS received");
+		i40e_pf_host_process_cmd_get_rss_hena(vf);
+		break;
+	case VIRTCHNL_OP_SET_RSS_HENA:
+		PMD_DRV_LOG(INFO, "OP_SET_RSS_HENA received");
+		i40e_pf_host_process_cmd_set_rss_hena(vf, msg);
+		break;
 
 	/* Don't add command supported below, which will
 	 * return an error code.
-- 
1.8.3.1