bnxt_en: Introduce bnxt_get_hwrm_resp_addr & bnxt_get_hwrm_seq_id routines.

These routines will be enhanced in the subsequent patch to
return the 2nd firmware comm. channel's hwrm response address &
sequence id respectively.
Signed-off-by: Venkat Duvvuru <venkatkumar.duvvuru@broadcom.com>
Signed-off-by: Michael Chan <michael.chan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/broadcom/bnxt/bnxt.c

@@ -3759,7 +3759,7 @@ static int bnxt_hwrm_do_send_msg(struct bnxt *bp, void *msg, u32 msg_len,
 	u8 *resp_addr = (u8 *)bp->hwrm_cmd_resp_addr;
 	u32 bar_offset = BNXT_GRCPF_REG_CHIMP_COMM;
 
-	req->seq_id = cpu_to_le16(bp->hwrm_cmd_seq++);
+	req->seq_id = cpu_to_le16(bnxt_get_hwrm_seq_id(bp));
 	memset(resp, 0, PAGE_SIZE);
 	cp_ring_id = le16_to_cpu(req->cmpl_ring);
 	intr_process = (cp_ring_id == INVALID_HW_RING_ID) ? 0 : 1;
@@ -4143,12 +4143,11 @@ static int bnxt_hwrm_cfa_ntuple_filter_free(struct bnxt *bp,
 static int bnxt_hwrm_cfa_ntuple_filter_alloc(struct bnxt *bp,
 					     struct bnxt_ntuple_filter *fltr)
 {
-	int rc = 0;
+	struct bnxt_vnic_info *vnic = &bp->vnic_info[fltr->rxq + 1];
 	struct hwrm_cfa_ntuple_filter_alloc_input req = {0};
-	struct hwrm_cfa_ntuple_filter_alloc_output *resp =
-		bp->hwrm_cmd_resp_addr;
+	struct hwrm_cfa_ntuple_filter_alloc_output *resp;
 	struct flow_keys *keys = &fltr->fkeys;
-	struct bnxt_vnic_info *vnic = &bp->vnic_info[fltr->rxq + 1];
+	int rc = 0;
 
 	bnxt_hwrm_cmd_hdr_init(bp, &req, HWRM_CFA_NTUPLE_FILTER_ALLOC, -1, -1);
 	req.l2_filter_id = bp->vnic_info[0].fw_l2_filter_id[fltr->l2_fltr_idx];
@@ -4194,8 +4193,10 @@ static int bnxt_hwrm_cfa_ntuple_filter_alloc(struct bnxt *bp,
 	req.dst_id = cpu_to_le16(vnic->fw_vnic_id);
 	mutex_lock(&bp->hwrm_cmd_lock);
 	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (!rc)
+	if (!rc) {
+		resp = bnxt_get_hwrm_resp_addr(bp, &req);
 		fltr->filter_id = resp->ntuple_filter_id;
+	}
 	mutex_unlock(&bp->hwrm_cmd_lock);
 	return rc;
 }

drivers/net/ethernet/broadcom/bnxt/bnxt.h

@@ -1673,6 +1673,19 @@ static inline void bnxt_db_write(struct bnxt *bp, struct bnxt_db_info *db,
 	}
 }
 
+static inline void *bnxt_get_hwrm_resp_addr(struct bnxt *bp, void *req)
+{
+	return bp->hwrm_cmd_resp_addr;
+}
+
+static inline u16 bnxt_get_hwrm_seq_id(struct bnxt *bp)
+{
+	u16 seq_id;
+
+	seq_id = bp->hwrm_cmd_seq++;
+	return seq_id;
+}
+
 extern const u16 bnxt_lhint_arr[];
 
 int bnxt_alloc_rx_data(struct bnxt *bp, struct bnxt_rx_ring_info *rxr,

drivers/net/ethernet/broadcom/bnxt/bnxt_tc.c

@@ -420,11 +420,11 @@ static int bnxt_hwrm_cfa_flow_alloc(struct bnxt *bp, struct bnxt_tc_flow *flow,
 				    __le16 ref_flow_handle,
 				    __le32 tunnel_handle, __le16 *flow_handle)
 {
-	struct hwrm_cfa_flow_alloc_output *resp = bp->hwrm_cmd_resp_addr;
 	struct bnxt_tc_actions *actions = &flow->actions;
 	struct bnxt_tc_l3_key *l3_mask = &flow->l3_mask;
 	struct bnxt_tc_l3_key *l3_key = &flow->l3_key;
 	struct hwrm_cfa_flow_alloc_input req = { 0 };
+	struct hwrm_cfa_flow_alloc_output *resp;
 	u16 flow_flags = 0, action_flags = 0;
 	int rc;
 
@@ -527,8 +527,10 @@ static int bnxt_hwrm_cfa_flow_alloc(struct bnxt *bp, struct bnxt_tc_flow *flow,
 
 	mutex_lock(&bp->hwrm_cmd_lock);
 	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (!rc)
+	if (!rc) {
+		resp = bnxt_get_hwrm_resp_addr(bp, &req);
 		*flow_handle = resp->flow_handle;
+	}
 	mutex_unlock(&bp->hwrm_cmd_lock);
 
 	if (rc == HWRM_ERR_CODE_RESOURCE_ALLOC_ERROR)
@@ -544,9 +546,8 @@ static int hwrm_cfa_decap_filter_alloc(struct bnxt *bp,
 				       __le32 ref_decap_handle,
 				       __le32 *decap_filter_handle)
 {
-	struct hwrm_cfa_decap_filter_alloc_output *resp =
-						bp->hwrm_cmd_resp_addr;
 	struct hwrm_cfa_decap_filter_alloc_input req = { 0 };
+	struct hwrm_cfa_decap_filter_alloc_output *resp;
 	struct ip_tunnel_key *tun_key = &flow->tun_key;
 	u32 enables = 0;
 	int rc;
@@ -599,10 +600,12 @@ static int hwrm_cfa_decap_filter_alloc(struct bnxt *bp,
 
 	mutex_lock(&bp->hwrm_cmd_lock);
 	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (!rc)
+	if (!rc) {
+		resp = bnxt_get_hwrm_resp_addr(bp, &req);
 		*decap_filter_handle = resp->decap_filter_id;
-	else
+	} else {
 		netdev_info(bp->dev, "%s: Error rc=%d", __func__, rc);
+	}
 	mutex_unlock(&bp->hwrm_cmd_lock);
 
 	if (rc)
@@ -633,9 +636,8 @@ static int hwrm_cfa_encap_record_alloc(struct bnxt *bp,
 				       struct bnxt_tc_l2_key *l2_info,
 				       __le32 *encap_record_handle)
 {
-	struct hwrm_cfa_encap_record_alloc_output *resp =
-						bp->hwrm_cmd_resp_addr;
 	struct hwrm_cfa_encap_record_alloc_input req = { 0 };
+	struct hwrm_cfa_encap_record_alloc_output *resp;
 	struct hwrm_cfa_encap_data_vxlan *encap =
 			(struct hwrm_cfa_encap_data_vxlan *)&req.encap_data;
 	struct hwrm_vxlan_ipv4_hdr *encap_ipv4 =
@@ -667,10 +669,12 @@ static int hwrm_cfa_encap_record_alloc(struct bnxt *bp,
 
 	mutex_lock(&bp->hwrm_cmd_lock);
 	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
-	if (!rc)
+	if (!rc) {
+		resp = bnxt_get_hwrm_resp_addr(bp, &req);
 		*encap_record_handle = resp->encap_record_id;
-	else
+	} else {
 		netdev_info(bp->dev, "%s: Error rc=%d", __func__, rc);
+	}
 	mutex_unlock(&bp->hwrm_cmd_lock);
 
 	if (rc)
@@ -1401,8 +1405,8 @@ static int
 bnxt_hwrm_cfa_flow_stats_get(struct bnxt *bp, int num_flows,
 			     struct bnxt_tc_stats_batch stats_batch[])
 {
-	struct hwrm_cfa_flow_stats_output *resp = bp->hwrm_cmd_resp_addr;
 	struct hwrm_cfa_flow_stats_input req = { 0 };
+	struct hwrm_cfa_flow_stats_output *resp;
 	__le16 *req_flow_handles = &req.flow_handle_0;
 	int rc, i;
 
@@ -1417,8 +1421,12 @@ bnxt_hwrm_cfa_flow_stats_get(struct bnxt *bp, int num_flows,
 	mutex_lock(&bp->hwrm_cmd_lock);
 	rc = _hwrm_send_message(bp, &req, sizeof(req), HWRM_CMD_TIMEOUT);
 	if (!rc) {
-		__le64 *resp_packets = &resp->packet_0;
-		__le64 *resp_bytes = &resp->byte_0;
+		__le64 *resp_packets;
+		__le64 *resp_bytes;
+
+		resp = bnxt_get_hwrm_resp_addr(bp, &req);
+		resp_packets = &resp->packet_0;
+		resp_bytes = &resp->byte_0;
 
 		for (i = 0; i < num_flows; i++) {
 			stats_batch[i].hw_stats.packets =