cxgb4: collect RSS dumps

Collect RSS table and RSS VF configuration dumps.
Signed-off-by: NRahul Lakkireddy <rahul.lakkireddy@chelsio.com>
Signed-off-by: NGanesh Goudar <ganeshgr@chelsio.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

drivers/net/ethernet/chelsio/cxgb4/cudbg_entity.h

@@ -42,6 +42,11 @@ struct cudbg_cim_qcfg {
 	u32 stat[4 * (CIM_NUM_IBQ + CIM_NUM_OBQ_T5)];
 };
 
+struct cudbg_rss_vf_conf {
+	u32 rss_vf_vfl;
+	u32 rss_vf_vfh;
+};
+
 struct ireg_field {
 	u32 ireg_addr;
 	u32 ireg_data;

drivers/net/ethernet/chelsio/cxgb4/cudbg_if.h

@@ -46,6 +46,8 @@ enum cudbg_dbg_entity_type {
 	CUDBG_CIM_OBQ_NCSI = 17,
 	CUDBG_EDC0 = 18,
 	CUDBG_EDC1 = 19,
+	CUDBG_RSS = 22,
+	CUDBG_RSS_VF_CONF = 25,
 	CUDBG_TP_INDIRECT = 36,
 	CUDBG_SGE_INDIRECT = 37,
 	CUDBG_ULPRX_LA = 41,

drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.c

@@ -528,6 +528,52 @@ int cudbg_collect_edc1_meminfo(struct cudbg_init *pdbg_init,
 					MEM_EDC1);
 }
 
+int cudbg_collect_rss(struct cudbg_init *pdbg_init,
+		      struct cudbg_buffer *dbg_buff,
+		      struct cudbg_error *cudbg_err)
+{
+	struct adapter *padap = pdbg_init->adap;
+	struct cudbg_buffer temp_buff = { 0 };
+	int rc;
+
+	rc = cudbg_get_buff(dbg_buff, RSS_NENTRIES * sizeof(u16), &temp_buff);
+	if (rc)
+		return rc;
+
+	rc = t4_read_rss(padap, (u16 *)temp_buff.data);
+	if (rc) {
+		cudbg_err->sys_err = rc;
+		cudbg_put_buff(&temp_buff, dbg_buff);
+		return rc;
+	}
+	cudbg_write_and_release_buff(&temp_buff, dbg_buff);
+	return rc;
+}
+
+int cudbg_collect_rss_vf_config(struct cudbg_init *pdbg_init,
+				struct cudbg_buffer *dbg_buff,
+				struct cudbg_error *cudbg_err)
+{
+	struct adapter *padap = pdbg_init->adap;
+	struct cudbg_buffer temp_buff = { 0 };
+	struct cudbg_rss_vf_conf *vfconf;
+	int vf, rc, vf_count;
+
+	vf_count = padap->params.arch.vfcount;
+	rc = cudbg_get_buff(dbg_buff,
+			    vf_count * sizeof(struct cudbg_rss_vf_conf),
+			    &temp_buff);
+	if (rc)
+		return rc;
+
+	vfconf = (struct cudbg_rss_vf_conf *)temp_buff.data;
+	for (vf = 0; vf < vf_count; vf++)
+		t4_read_rss_vf_config(padap, vf, &vfconf[vf].rss_vf_vfl,
+				      &vfconf[vf].rss_vf_vfh, true);
+	cudbg_write_and_release_buff(&temp_buff, dbg_buff);
+	return rc;
+}
+
 int cudbg_collect_tp_indirect(struct cudbg_init *pdbg_init,
 			      struct cudbg_buffer *dbg_buff,
 			      struct cudbg_error *cudbg_err)

drivers/net/ethernet/chelsio/cxgb4/cudbg_lib.h

@@ -75,6 +75,12 @@ int cudbg_collect_edc0_meminfo(struct cudbg_init *pdbg_init,
 int cudbg_collect_edc1_meminfo(struct cudbg_init *pdbg_init,
 			       struct cudbg_buffer *dbg_buff,
 			       struct cudbg_error *cudbg_err);
+int cudbg_collect_rss(struct cudbg_init *pdbg_init,
+		      struct cudbg_buffer *dbg_buff,
+		      struct cudbg_error *cudbg_err);
+int cudbg_collect_rss_vf_config(struct cudbg_init *pdbg_init,
+				struct cudbg_buffer *dbg_buff,
+				struct cudbg_error *cudbg_err);
 int cudbg_collect_tp_indirect(struct cudbg_init *pdbg_init,
 			      struct cudbg_buffer *dbg_buff,
 			      struct cudbg_error *cudbg_err);

drivers/net/ethernet/chelsio/cxgb4/cxgb4_cudbg.c

@@ -44,6 +44,8 @@ static const struct cxgb4_collect_entity cxgb4_collect_hw_dump[] = {
 	{ CUDBG_CIM_OBQ_ULP3, cudbg_collect_cim_obq_ulp3 },
 	{ CUDBG_CIM_OBQ_SGE, cudbg_collect_cim_obq_sge },
 	{ CUDBG_CIM_OBQ_NCSI, cudbg_collect_cim_obq_ncsi },
+	{ CUDBG_RSS, cudbg_collect_rss },
+	{ CUDBG_RSS_VF_CONF, cudbg_collect_rss_vf_config },
 	{ CUDBG_TP_INDIRECT, cudbg_collect_tp_indirect },
 	{ CUDBG_SGE_INDIRECT, cudbg_collect_sge_indirect },
 	{ CUDBG_ULPRX_LA, cudbg_collect_ulprx_la },
@@ -144,6 +146,13 @@ static u32 cxgb4_get_entity_length(struct adapter *adap, u32 entity)
 		}
 		len = cudbg_mbytes_to_bytes(len);
 		break;
+	case CUDBG_RSS:
+		len = RSS_NENTRIES * sizeof(u16);
+		break;
+	case CUDBG_RSS_VF_CONF:
+		len = adap->params.arch.vfcount *
+		      sizeof(struct cudbg_rss_vf_conf);
+		break;
 	case CUDBG_TP_INDIRECT:
 		switch (CHELSIO_CHIP_VERSION(adap->params.chip)) {
 		case CHELSIO_T5: