ice: Support displaying ntuple rules

Add functionality for ethtool --show-ntuple, allowing for filters to be
displayed when set functionality is added. Add statistics related to
Flow Director matches and status.

Signed-off-by: Henry Tieman <[email protected]>
Signed-off-by: Tony Nguyen <[email protected]>
Tested-by: Andrew Bowers <[email protected]>
Signed-off-by: Jeff Kirsher <[email protected]>

Author: Henry Tieman

drivers/net/ethernet/intel/ice/ice.h

@@ -525,6 +525,11 @@ static inline struct ice_vsi *ice_get_ctrl_vsi(struct ice_pf *pf)
 	return pf->vsi[pf->ctrl_vsi_idx];
 }
 
+#define ICE_FD_STAT_CTR_BLOCK_COUNT	256
+#define ICE_FD_STAT_PF_IDX(base_idx) \
+			((base_idx) * ICE_FD_STAT_CTR_BLOCK_COUNT)
+#define ICE_FD_SB_STAT_IDX(base_idx) ICE_FD_STAT_PF_IDX(base_idx)
+
 int ice_vsi_setup_tx_rings(struct ice_vsi *vsi);
 int ice_vsi_setup_rx_rings(struct ice_vsi *vsi);
 int ice_vsi_open_ctrl(struct ice_vsi *vsi);
@@ -552,6 +557,10 @@ void ice_print_link_msg(struct ice_vsi *vsi, bool isup);
 const char *ice_stat_str(enum ice_status stat_err);
 const char *ice_aq_str(enum ice_aq_err aq_err);
 void ice_vsi_manage_fdir(struct ice_vsi *vsi, bool ena);
+int ice_get_ethtool_fdir_entry(struct ice_hw *hw, struct ethtool_rxnfc *cmd);
+int
+ice_get_fdir_fltr_ids(struct ice_hw *hw, struct ethtool_rxnfc *cmd,
+		      u32 *rule_locs);
 void ice_fdir_release_flows(struct ice_hw *hw);
 int ice_fdir_create_dflt_rules(struct ice_pf *pf);
 int ice_open(struct net_device *netdev);

drivers/net/ethernet/intel/ice/ice_ethtool.c

@@ -130,6 +130,8 @@ static const struct ice_stats ice_gstrings_pf_stats[] = {
 	ICE_PF_STAT("illegal_bytes.nic", stats.illegal_bytes),
 	ICE_PF_STAT("mac_local_faults.nic", stats.mac_local_faults),
 	ICE_PF_STAT("mac_remote_faults.nic", stats.mac_remote_faults),
+	ICE_PF_STAT("fdir_sb_match.nic", stats.fd_sb_match),
+	ICE_PF_STAT("fdir_sb_status.nic", stats.fd_sb_status),
 };
 
 static const u32 ice_regs_dump_list[] = {
@@ -2558,12 +2560,27 @@ ice_get_rxnfc(struct net_device *netdev, struct ethtool_rxnfc *cmd,
 	struct ice_netdev_priv *np = netdev_priv(netdev);
 	struct ice_vsi *vsi = np->vsi;
 	int ret = -EOPNOTSUPP;
+	struct ice_hw *hw;
+
+	hw = &vsi->back->hw;
 
 	switch (cmd->cmd) {
 	case ETHTOOL_GRXRINGS:
 		cmd->data = vsi->rss_size;
 		ret = 0;
 		break;
+	case ETHTOOL_GRXCLSRLCNT:
+		cmd->rule_cnt = hw->fdir_active_fltr;
+		/* report total rule count */
+		cmd->data = ice_get_fdir_cnt_all(hw);
+		ret = 0;
+		break;
+	case ETHTOOL_GRXCLSRULE:
+		ret = ice_get_ethtool_fdir_entry(hw, cmd);
+		break;
+	case ETHTOOL_GRXCLSRLALL:
+		ret = ice_get_fdir_fltr_ids(hw, cmd, (u32 *)rule_locs);
+		break;
 	case ETHTOOL_GRXFH:
 		ice_get_rss_hash_opt(vsi, cmd);
 		ret = 0;

drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c

@@ -12,6 +12,167 @@
  */
 #define TNL_SEG_CNT(_TNL_) ((_TNL_) + 1)
 
+/**
+ * ice_fltr_to_ethtool_flow - convert filter type values to ethtool
+ * flow type values
+ * @flow: filter type to be converted
+ *
+ * Returns the corresponding ethtool flow type.
+ */
+static int ice_fltr_to_ethtool_flow(enum ice_fltr_ptype flow)
+{
+	switch (flow) {
+	case ICE_FLTR_PTYPE_NONF_IPV4_TCP:
+		return TCP_V4_FLOW;
+	case ICE_FLTR_PTYPE_NONF_IPV4_UDP:
+		return UDP_V4_FLOW;
+	case ICE_FLTR_PTYPE_NONF_IPV4_SCTP:
+		return SCTP_V4_FLOW;
+	case ICE_FLTR_PTYPE_NONF_IPV4_OTHER:
+		return IPV4_USER_FLOW;
+	default:
+		/* 0 is undefined ethtool flow */
+		return 0;
+	}
+}
+
+/**
+ * ice_ethtool_flow_to_fltr - convert ethtool flow type to filter enum
+ * @eth: Ethtool flow type to be converted
+ *
+ * Returns flow enum
+ */
+static enum ice_fltr_ptype ice_ethtool_flow_to_fltr(int eth)
+{
+	switch (eth) {
+	case TCP_V4_FLOW:
+		return ICE_FLTR_PTYPE_NONF_IPV4_TCP;
+	case UDP_V4_FLOW:
+		return ICE_FLTR_PTYPE_NONF_IPV4_UDP;
+	case SCTP_V4_FLOW:
+		return ICE_FLTR_PTYPE_NONF_IPV4_SCTP;
+	case IPV4_USER_FLOW:
+		return ICE_FLTR_PTYPE_NONF_IPV4_OTHER;
+	default:
+		return ICE_FLTR_PTYPE_NONF_NONE;
+	}
+}
+
+/**
+ * ice_get_ethtool_fdir_entry - fill ethtool structure with fdir filter data
+ * @hw: hardware structure that contains filter list
+ * @cmd: ethtool command data structure to receive the filter data
+ *
+ * Returns 0 on success and -EINVAL on failure
+ */
+int ice_get_ethtool_fdir_entry(struct ice_hw *hw, struct ethtool_rxnfc *cmd)
+{
+	struct ethtool_rx_flow_spec *fsp;
+	struct ice_fdir_fltr *rule;
+	int ret = 0;
+	u16 idx;
+
+	fsp = (struct ethtool_rx_flow_spec *)&cmd->fs;
+
+	mutex_lock(&hw->fdir_fltr_lock);
+
+	rule = ice_fdir_find_fltr_by_idx(hw, fsp->location);
+
+	if (!rule || fsp->location != rule->fltr_id) {
+		ret = -EINVAL;
+		goto release_lock;
+	}
+
+	fsp->flow_type = ice_fltr_to_ethtool_flow(rule->flow_type);
+
+	memset(&fsp->m_u, 0, sizeof(fsp->m_u));
+	memset(&fsp->m_ext, 0, sizeof(fsp->m_ext));
+
+	switch (fsp->flow_type) {
+	case IPV4_USER_FLOW:
+		fsp->h_u.usr_ip4_spec.ip_ver = ETH_RX_NFC_IP4;
+		fsp->h_u.usr_ip4_spec.proto = 0;
+		fsp->h_u.usr_ip4_spec.l4_4_bytes = rule->ip.l4_header;
+		fsp->h_u.usr_ip4_spec.tos = rule->ip.tos;
+		fsp->h_u.usr_ip4_spec.ip4src = rule->ip.src_ip;
+		fsp->h_u.usr_ip4_spec.ip4dst = rule->ip.dst_ip;
+		fsp->m_u.usr_ip4_spec.ip4src = rule->mask.src_ip;
+		fsp->m_u.usr_ip4_spec.ip4dst = rule->mask.dst_ip;
+		fsp->m_u.usr_ip4_spec.ip_ver = 0xFF;
+		fsp->m_u.usr_ip4_spec.proto = 0;
+		fsp->m_u.usr_ip4_spec.l4_4_bytes = rule->mask.l4_header;
+		fsp->m_u.usr_ip4_spec.tos = rule->mask.tos;
+		break;
+	case TCP_V4_FLOW:
+	case UDP_V4_FLOW:
+	case SCTP_V4_FLOW:
+		fsp->h_u.tcp_ip4_spec.psrc = rule->ip.src_port;
+		fsp->h_u.tcp_ip4_spec.pdst = rule->ip.dst_port;
+		fsp->h_u.tcp_ip4_spec.ip4src = rule->ip.src_ip;
+		fsp->h_u.tcp_ip4_spec.ip4dst = rule->ip.dst_ip;
+		fsp->m_u.tcp_ip4_spec.psrc = rule->mask.src_port;
+		fsp->m_u.tcp_ip4_spec.pdst = rule->mask.dst_port;
+		fsp->m_u.tcp_ip4_spec.ip4src = rule->mask.src_ip;
+		fsp->m_u.tcp_ip4_spec.ip4dst = rule->mask.dst_ip;
+		break;
+	default:
+		break;
+	}
+
+	if (rule->dest_ctl == ICE_FLTR_PRGM_DESC_DEST_DROP_PKT)
+		fsp->ring_cookie = RX_CLS_FLOW_DISC;
+	else
+		fsp->ring_cookie = rule->q_index;
+
+	idx = ice_ethtool_flow_to_fltr(fsp->flow_type);
+	if (idx == ICE_FLTR_PTYPE_NONF_NONE) {
+		dev_err(ice_hw_to_dev(hw), "Missing input index for flow_type %d\n",
+			rule->flow_type);
+		ret = -EINVAL;
+	}
+
+release_lock:
+	mutex_unlock(&hw->fdir_fltr_lock);
+	return ret;
+}
+
+/**
+ * ice_get_fdir_fltr_ids - fill buffer with filter IDs of active filters
+ * @hw: hardware structure containing the filter list
+ * @cmd: ethtool command data structure
+ * @rule_locs: ethtool array passed in from OS to receive filter IDs
+ *
+ * Returns 0 as expected for success by ethtool
+ */
+int
+ice_get_fdir_fltr_ids(struct ice_hw *hw, struct ethtool_rxnfc *cmd,
+		      u32 *rule_locs)
+{
+	struct ice_fdir_fltr *f_rule;
+	unsigned int cnt = 0;
+	int val = 0;
+
+	/* report total rule count */
+	cmd->data = ice_get_fdir_cnt_all(hw);
+
+	mutex_lock(&hw->fdir_fltr_lock);
+
+	list_for_each_entry(f_rule, &hw->fdir_list_head, fltr_node) {
+		if (cnt == cmd->rule_cnt) {
+			val = -EMSGSIZE;
+			goto release_lock;
+		}
+		rule_locs[cnt] = f_rule->fltr_id;
+		cnt++;
+	}
+
+release_lock:
+	mutex_unlock(&hw->fdir_fltr_lock);
+	if (!val)
+		cmd->rule_cnt = cnt;
+	return val;
+}
+
 /**
  * ice_fdir_get_hw_prof - return the ice_fd_hw_proc associated with a flow
  * @hw: hardware structure containing the filter list

drivers/net/ethernet/intel/ice/ice_fdir.c

@@ -52,3 +52,36 @@ ice_alloc_fd_shrd_item(struct ice_hw *hw, u16 *cntr_id, u16 num_fltr)
 				  ICE_AQC_RES_TYPE_FLAG_DEDICATED, num_fltr,
 				  cntr_id);
 }
+
+/**
+ * ice_get_fdir_cnt_all - get the number of Flow Director filters
+ * @hw: hardware data structure
+ *
+ * Returns the number of filters available on device
+ */
+int ice_get_fdir_cnt_all(struct ice_hw *hw)
+{
+	return hw->func_caps.fd_fltr_guar + hw->func_caps.fd_fltr_best_effort;
+}
+
+/**
+ * ice_fdir_find_by_idx - find filter with idx
+ * @hw: pointer to hardware structure
+ * @fltr_idx: index to find.
+ *
+ * Returns pointer to filter if found or null
+ */
+struct ice_fdir_fltr *
+ice_fdir_find_fltr_by_idx(struct ice_hw *hw, u32 fltr_idx)
+{
+	struct ice_fdir_fltr *rule;
+
+	list_for_each_entry(rule, &hw->fdir_list_head, fltr_node) {
+		/* rule ID found in the list */
+		if (fltr_idx == rule->fltr_id)
+			return rule;
+		if (fltr_idx < rule->fltr_id)
+			break;
+	}
+	return NULL;
+}

drivers/net/ethernet/intel/ice/ice_fdir.h

@@ -3,10 +3,57 @@
 
 #ifndef _ICE_FDIR_H_
 #define _ICE_FDIR_H_
+
+enum ice_fltr_prgm_desc_dest {
+	ICE_FLTR_PRGM_DESC_DEST_DROP_PKT,
+	ICE_FLTR_PRGM_DESC_DEST_DIRECT_PKT_QINDEX,
+};
+
+struct ice_fdir_v4 {
+	__be32 dst_ip;
+	__be32 src_ip;
+	__be16 dst_port;
+	__be16 src_port;
+	__be32 l4_header;
+	__be32 sec_parm_idx;	/* security parameter index */
+	u8 tos;
+	u8 ip_ver;
+	u8 proto;
+};
+
+struct ice_fdir_extra {
+	u8 dst_mac[ETH_ALEN];	/* dest MAC address */
+	u32 usr_def[2];		/* user data */
+	__be16 vlan_type;	/* VLAN ethertype */
+	__be16 vlan_tag;	/* VLAN tag info */
+};
+
+struct ice_fdir_fltr {
+	struct list_head fltr_node;
+	enum ice_fltr_ptype flow_type;
+
+	struct ice_fdir_v4 ip;
+	struct ice_fdir_v4 mask;
+
+	struct ice_fdir_extra ext_data;
+	struct ice_fdir_extra ext_mask;
+
+	/* filter control */
+	u16 q_index;
+	u16 dest_vsi;
+	u8 dest_ctl;
+	u8 fltr_status;
+	u16 cnt_index;
+	u32 fltr_id;
+};
+
 enum ice_status ice_alloc_fd_res_cntr(struct ice_hw *hw, u16 *cntr_id);
 enum ice_status ice_free_fd_res_cntr(struct ice_hw *hw, u16 cntr_id);
 enum ice_status
 ice_alloc_fd_guar_item(struct ice_hw *hw, u16 *cntr_id, u16 num_fltr);
 enum ice_status
 ice_alloc_fd_shrd_item(struct ice_hw *hw, u16 *cntr_id, u16 num_fltr);
+int ice_get_fdir_cnt_all(struct ice_hw *hw);
+struct ice_fdir_fltr *
+ice_fdir_find_fltr_by_idx(struct ice_hw *hw, u32 fltr_idx);
 #endif /* _ICE_FDIR_H_ */

drivers/net/ethernet/intel/ice/ice_hw_autogen.h

@@ -344,6 +344,7 @@
 #define GLPRT_TDOLD(_i)				(0x00381280 + ((_i) * 8))
 #define GLPRT_UPRCL(_i)				(0x00381300 + ((_i) * 8))
 #define GLPRT_UPTCL(_i)				(0x003811C0 + ((_i) * 8))
+#define GLSTAT_FD_CNT0L(_i)			(0x003A0000 + ((_i) * 8))
 #define GLV_BPRCL(_i)				(0x003B6000 + ((_i) * 8))
 #define GLV_BPTCL(_i)				(0x0030E000 + ((_i) * 8))
 #define GLV_GORCL(_i)				(0x003B0000 + ((_i) * 8))

drivers/net/ethernet/intel/ice/ice_main.c

@@ -4281,6 +4281,7 @@ void ice_update_pf_stats(struct ice_pf *pf)
 {
 	struct ice_hw_port_stats *prev_ps, *cur_ps;
 	struct ice_hw *hw = &pf->hw;
+	u16 fd_ctr_base;
 	u8 port;
 
 	port = hw->port_info->lport;
@@ -4369,6 +4370,12 @@ void ice_update_pf_stats(struct ice_pf *pf)
 	ice_stat_update40(hw, GLPRT_PTC9522L(port), pf->stat_prev_loaded,
 			  &prev_ps->tx_size_big, &cur_ps->tx_size_big);
 
+	fd_ctr_base = hw->fd_ctr_base;
+
+	ice_stat_update40(hw,
+			  GLSTAT_FD_CNT0L(ICE_FD_SB_STAT_IDX(fd_ctr_base)),
+			  pf->stat_prev_loaded, &prev_ps->fd_sb_match,
+			  &cur_ps->fd_sb_match);
 	ice_stat_update32(hw, GLPRT_LXONRXC(port), pf->stat_prev_loaded,
 			  &prev_ps->link_xon_rx, &cur_ps->link_xon_rx);
 
@@ -4412,6 +4419,8 @@ void ice_update_pf_stats(struct ice_pf *pf)
 	ice_stat_update32(hw, GLPRT_RJC(port), pf->stat_prev_loaded,
 			  &prev_ps->rx_jabber, &cur_ps->rx_jabber);
 
+	cur_ps->fd_sb_status = test_bit(ICE_FLAG_FD_ENA, pf->flags) ? 1 : 0;
+
 	pf->stat_prev_loaded = true;
 }
 

drivers/net/ethernet/intel/ice/ice_type.h

@@ -691,6 +691,9 @@ struct ice_hw_port_stats {
 	u64 tx_size_1023;		/* ptc1023 */
 	u64 tx_size_1522;		/* ptc1522 */
 	u64 tx_size_big;		/* ptc9522 */
+	/* flow director stats */
+	u32 fd_sb_status;
+	u64 fd_sb_match;
 };
 
 /* Checksum and Shadow RAM pointers */