Merge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2021-12-08

Yahui adds re-initialization of Flow Director for VF reset.

Paul restores interrupts when enabling VFs.

Dave re-adds bandwidth check for DCBNL and moves DSCP mode check
earlier in the function.

Jesse prevents reporting of dropped packets that occur during
initialization and fixes reporting of statistics which could occur with
frequent reads.

Michal corrects setting of protocol type for UDP header and fixes lack
of differentiation when adding filters for tunnels.

* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  ice: safer stats processing
  ice: fix adding different tunnels
  ice: fix choosing UDP header type
  ice: ignore dropped packets during init
  ice: Fix problems with DSCP QoS implementation
  ice: rearm other interrupt cause register after enabling VFs
  ice: fix FDIR init missing when reset VF
====================

Link: https://lore.kernel.org/r/20211208211144.2629867-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

9 files changed, 74 insertions, 47 deletions

diff --git a/drivers/net/ethernet/intel/ice/ice_dcb_nl.c b/drivers/net/ethernet/intel/ice/ice_dcb_nl.c
index 7fdeb411b6df..3eb01731e496 100644
--- a/drivers/net/ethernet/intel/ice/ice_dcb_nl.c
+++ b/drivers/net/ethernet/intel/ice/ice_dcb_nl.c
@@ -97,6 +97,9 @@ static int ice_dcbnl_setets(struct net_device *netdev, struct ieee_ets *ets)
 
 	new_cfg->etscfg.maxtcs = pf->hw.func_caps.common_cap.maxtc;
 
+	if (!bwcfg)
+		new_cfg->etscfg.tcbwtable[0] = 100;
+
 	if (!bwrec)
 		new_cfg->etsrec.tcbwtable[0] = 100;
 
@@ -167,15 +170,18 @@ static u8 ice_dcbnl_setdcbx(struct net_device *netdev, u8 mode)
 	if (mode == pf->dcbx_cap)
 		return ICE_DCB_NO_HW_CHG;
 
-	pf->dcbx_cap = mode;
 	qos_cfg = &pf->hw.port_info->qos_cfg;
-	if (mode & DCB_CAP_DCBX_VER_CEE) {
-		if (qos_cfg->local_dcbx_cfg.pfc_mode == ICE_QOS_MODE_DSCP)
-			return ICE_DCB_NO_HW_CHG;
+
+	/* DSCP configuration is not DCBx negotiated */
+	if (qos_cfg->local_dcbx_cfg.pfc_mode == ICE_QOS_MODE_DSCP)
+		return ICE_DCB_NO_HW_CHG;
+
+	pf->dcbx_cap = mode;
+
+	if (mode & DCB_CAP_DCBX_VER_CEE)
 		qos_cfg->local_dcbx_cfg.dcbx_mode = ICE_DCBX_MODE_CEE;
-	} else {
+	else
 		qos_cfg->local_dcbx_cfg.dcbx_mode = ICE_DCBX_MODE_IEEE;
-	}
 
 	dev_info(ice_pf_to_dev(pf), "DCBx mode = 0x%x\n", mode);
 	return ICE_DCB_HW_CHG_RST;
diff --git a/drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c b/drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c
index 38960bcc384c..b6e7f47c8c78 100644
--- a/drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c
+++ b/drivers/net/ethernet/intel/ice/ice_ethtool_fdir.c
@@ -1268,7 +1268,7 @@ ice_fdir_write_all_fltr(struct ice_pf *pf, struct ice_fdir_fltr *input,
 		bool is_tun = tun == ICE_FD_HW_SEG_TUN;
 		int err;
 
-		if (is_tun && !ice_get_open_tunnel_port(&pf->hw, &port_num))
+		if (is_tun && !ice_get_open_tunnel_port(&pf->hw, &port_num, TNL_ALL))
 			continue;
 		err = ice_fdir_write_fltr(pf, input, add, is_tun);
 		if (err)
@@ -1652,7 +1652,7 @@ int ice_add_fdir_ethtool(struct ice_vsi *vsi, struct ethtool_rxnfc *cmd)
 	}
 
 	/* return error if not an update and no available filters */
-	fltrs_needed = ice_get_open_tunnel_port(hw, &tunnel_port) ? 2 : 1;
+	fltrs_needed = ice_get_open_tunnel_port(hw, &tunnel_port, TNL_ALL) ? 2 : 1;
 	if (!ice_fdir_find_fltr_by_idx(hw, fsp->location) &&
 	    ice_fdir_num_avail_fltr(hw, pf->vsi[vsi->idx]) < fltrs_needed) {
 		dev_err(dev, "Failed to add filter.  The maximum number of flow director filters has been reached.\n");
diff --git a/drivers/net/ethernet/intel/ice/ice_fdir.c b/drivers/net/ethernet/intel/ice/ice_fdir.c
index cbd8424631e3..4dca009bdd50 100644
--- a/drivers/net/ethernet/intel/ice/ice_fdir.c
+++ b/drivers/net/ethernet/intel/ice/ice_fdir.c
@@ -924,7 +924,7 @@ ice_fdir_get_gen_prgm_pkt(struct ice_hw *hw, struct ice_fdir_fltr *input,
 		memcpy(pkt, ice_fdir_pkt[idx].pkt, ice_fdir_pkt[idx].pkt_len);
 		loc = pkt;
 	} else {
-		if (!ice_get_open_tunnel_port(hw, &tnl_port))
+		if (!ice_get_open_tunnel_port(hw, &tnl_port, TNL_ALL))
 			return ICE_ERR_DOES_NOT_EXIST;
 		if (!ice_fdir_pkt[idx].tun_pkt)
 			return ICE_ERR_PARAM;
diff --git a/drivers/net/ethernet/intel/ice/ice_flex_pipe.c b/drivers/net/ethernet/intel/ice/ice_flex_pipe.c
index 23cfcceb1536..6ad1c2559724 100644
--- a/drivers/net/ethernet/intel/ice/ice_flex_pipe.c
+++ b/drivers/net/ethernet/intel/ice/ice_flex_pipe.c
@@ -1899,9 +1899,11 @@ static struct ice_buf *ice_pkg_buf(struct ice_buf_build *bld)
  * ice_get_open_tunnel_port - retrieve an open tunnel port
  * @hw: pointer to the HW structure
  * @port: returns open port
+ * @type: type of tunnel, can be TNL_LAST if it doesn't matter
  */
 bool
-ice_get_open_tunnel_port(struct ice_hw *hw, u16 *port)
+ice_get_open_tunnel_port(struct ice_hw *hw, u16 *port,
+			 enum ice_tunnel_type type)
 {
 	bool res = false;
 	u16 i;
@@ -1909,7 +1911,8 @@ ice_get_open_tunnel_port(struct ice_hw *hw, u16 *port)
 	mutex_lock(&hw->tnl_lock);
 
 	for (i = 0; i < hw->tnl.count && i < ICE_TUNNEL_MAX_ENTRIES; i++)
-		if (hw->tnl.tbl[i].valid && hw->tnl.tbl[i].port) {
+		if (hw->tnl.tbl[i].valid && hw->tnl.tbl[i].port &&
+		    (type == TNL_LAST || type == hw->tnl.tbl[i].type)) {
 			*port = hw->tnl.tbl[i].port;
 			res = true;
 			break;
diff --git a/drivers/net/ethernet/intel/ice/ice_flex_pipe.h b/drivers/net/ethernet/intel/ice/ice_flex_pipe.h
index 344c2637facd..a2863f38fd1f 100644
--- a/drivers/net/ethernet/intel/ice/ice_flex_pipe.h
+++ b/drivers/net/ethernet/intel/ice/ice_flex_pipe.h
@@ -33,7 +33,8 @@ enum ice_status
 ice_get_sw_fv_list(struct ice_hw *hw, u8 *prot_ids, u16 ids_cnt,
 		   unsigned long *bm, struct list_head *fv_list);
 bool
-ice_get_open_tunnel_port(struct ice_hw *hw, u16 *port);
+ice_get_open_tunnel_port(struct ice_hw *hw, u16 *port,
+			 enum ice_tunnel_type type);
 int ice_udp_tunnel_set_port(struct net_device *netdev, unsigned int table,
 			    unsigned int idx, struct udp_tunnel_info *ti);
 int ice_udp_tunnel_unset_port(struct net_device *netdev, unsigned int table,
diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 4d1fc48c9744..73c61cdb036f 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -5881,6 +5881,9 @@ static int ice_up_complete(struct ice_vsi *vsi)
 		netif_carrier_on(vsi->netdev);
 	}
 
+	/* clear this now, and the first stats read will be used as baseline */
+	vsi->stat_offsets_loaded = false;
+
 	ice_service_task_schedule(pf);
 
 	return 0;
@@ -5927,14 +5930,15 @@ ice_fetch_u64_stats_per_ring(struct u64_stats_sync *syncp, struct ice_q_stats st
 /**
  * ice_update_vsi_tx_ring_stats - Update VSI Tx ring stats counters
  * @vsi: the VSI to be updated
+ * @vsi_stats: the stats struct to be updated
  * @rings: rings to work on
  * @count: number of rings
  */
 static void
-ice_update_vsi_tx_ring_stats(struct ice_vsi *vsi, struct ice_tx_ring **rings,
-			     u16 count)
+ice_update_vsi_tx_ring_stats(struct ice_vsi *vsi,
+			     struct rtnl_link_stats64 *vsi_stats,
+			     struct ice_tx_ring **rings, u16 count)
 {
-	struct rtnl_link_stats64 *vsi_stats = &vsi->net_stats;
 	u16 i;
 
 	for (i = 0; i < count; i++) {
@@ -5958,15 +5962,13 @@ ice_update_vsi_tx_ring_stats(struct ice_vsi *vsi, struct ice_tx_ring **rings,
  */
 static void ice_update_vsi_ring_stats(struct ice_vsi *vsi)
 {
-	struct rtnl_link_stats64 *vsi_stats = &vsi->net_stats;
+	struct rtnl_link_stats64 *vsi_stats;
 	u64 pkts, bytes;
 	int i;
 
-	/* reset netdev stats */
-	vsi_stats->tx_packets = 0;
-	vsi_stats->tx_bytes = 0;
-	vsi_stats->rx_packets = 0;
-	vsi_stats->rx_bytes = 0;
+	vsi_stats = kzalloc(sizeof(*vsi_stats), GFP_ATOMIC);
+	if (!vsi_stats)
+		return;
 
 	/* reset non-netdev (extended) stats */
 	vsi->tx_restart = 0;
@@ -5978,7 +5980,8 @@ static void ice_update_vsi_ring_stats(struct ice_vsi *vsi)
 	rcu_read_lock();
 
 	/* update Tx rings counters */
-	ice_update_vsi_tx_ring_stats(vsi, vsi->tx_rings, vsi->num_txq);
+	ice_update_vsi_tx_ring_stats(vsi, vsi_stats, vsi->tx_rings,
+				     vsi->num_txq);
 
 	/* update Rx rings counters */
 	ice_for_each_rxq(vsi, i) {
@@ -5993,10 +5996,17 @@ static void ice_update_vsi_ring_stats(struct ice_vsi *vsi)
 
 	/* update XDP Tx rings counters */
 	if (ice_is_xdp_ena_vsi(vsi))
-		ice_update_vsi_tx_ring_stats(vsi, vsi->xdp_rings,
+		ice_update_vsi_tx_ring_stats(vsi, vsi_stats, vsi->xdp_rings,
 					     vsi->num_xdp_txq);
 
 	rcu_read_unlock();
+
+	vsi->net_stats.tx_packets = vsi_stats->tx_packets;
+	vsi->net_stats.tx_bytes = vsi_stats->tx_bytes;
+	vsi->net_stats.rx_packets = vsi_stats->rx_packets;
+	vsi->net_stats.rx_bytes = vsi_stats->rx_bytes;
+
+	kfree(vsi_stats);
 }
 
 /**
diff --git a/drivers/net/ethernet/intel/ice/ice_switch.c b/drivers/net/ethernet/intel/ice/ice_switch.c
index 793f4a9fc2cd..183d93033890 100644
--- a/drivers/net/ethernet/intel/ice/ice_switch.c
+++ b/drivers/net/ethernet/intel/ice/ice_switch.c
@@ -3796,10 +3796,13 @@ static struct ice_protocol_entry ice_prot_id_tbl[ICE_PROTOCOL_LAST] = {
  * ice_find_recp - find a recipe
  * @hw: pointer to the hardware structure
  * @lkup_exts: extension sequence to match
+ * @tun_type: type of recipe tunnel
  *
  * Returns index of matching recipe, or ICE_MAX_NUM_RECIPES if not found.
  */
-static u16 ice_find_recp(struct ice_hw *hw, struct ice_prot_lkup_ext *lkup_exts)
+static u16
+ice_find_recp(struct ice_hw *hw, struct ice_prot_lkup_ext *lkup_exts,
+	      enum ice_sw_tunnel_type tun_type)
 {
 	bool refresh_required = true;
 	struct ice_sw_recipe *recp;
@@ -3860,8 +3863,9 @@ static u16 ice_find_recp(struct ice_hw *hw, struct ice_prot_lkup_ext *lkup_exts)
 			}
 			/* If for "i"th recipe the found was never set to false
 			 * then it means we found our match
+			 * Also tun type of recipe needs to be checked
 			 */
-			if (found)
+			if (found && recp[i].tun_type == tun_type)
 				return i; /* Return the recipe ID */
 		}
 	}
@@ -4651,11 +4655,12 @@ ice_add_adv_recipe(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
 	}
 
 	/* Look for a recipe which matches our requested fv / mask list */
-	*rid = ice_find_recp(hw, lkup_exts);
+	*rid = ice_find_recp(hw, lkup_exts, rinfo->tun_type);
 	if (*rid < ICE_MAX_NUM_RECIPES)
 		/* Success if found a recipe that match the existing criteria */
 		goto err_unroll;
 
+	rm->tun_type = rinfo->tun_type;
 	/* Recipe we need does not exist, add a recipe */
 	status = ice_add_sw_recipe(hw, rm, profiles);
 	if (status)
@@ -4958,11 +4963,13 @@ ice_fill_adv_packet_tun(struct ice_hw *hw, enum ice_sw_tunnel_type tun_type,
 
 	switch (tun_type) {
 	case ICE_SW_TUN_VXLAN:
+		if (!ice_get_open_tunnel_port(hw, &open_port, TNL_VXLAN))
+			return ICE_ERR_CFG;
+		break;
 	case ICE_SW_TUN_GENEVE:
-		if (!ice_get_open_tunnel_port(hw, &open_port))
+		if (!ice_get_open_tunnel_port(hw, &open_port, TNL_GENEVE))
 			return ICE_ERR_CFG;
 		break;
-
 	default:
 		/* Nothing needs to be done for this tunnel type */
 		return 0;
@@ -5555,7 +5562,7 @@ ice_rem_adv_rule(struct ice_hw *hw, struct ice_adv_lkup_elem *lkups,
 	if (status)
 		return status;
 
-	rid = ice_find_recp(hw, &lkup_exts);
+	rid = ice_find_recp(hw, &lkup_exts, rinfo->tun_type);
 	/* If did not find a recipe that match the existing criteria */
 	if (rid == ICE_MAX_NUM_RECIPES)
 		return ICE_ERR_PARAM;
diff --git a/drivers/net/ethernet/intel/ice/ice_tc_lib.c b/drivers/net/ethernet/intel/ice/ice_tc_lib.c
index e5d23feb6701..25cca5c4ae57 100644
--- a/drivers/net/ethernet/intel/ice/ice_tc_lib.c
+++ b/drivers/net/ethernet/intel/ice/ice_tc_lib.c
@@ -74,21 +74,13 @@ static enum ice_protocol_type ice_proto_type_from_ipv6(bool inner)
 	return inner ? ICE_IPV6_IL : ICE_IPV6_OFOS;
 }
 
-static enum ice_protocol_type
-ice_proto_type_from_l4_port(bool inner, u16 ip_proto)
+static enum ice_protocol_type ice_proto_type_from_l4_port(u16 ip_proto)
 {
-	if (inner) {
-		switch (ip_proto) {
-		case IPPROTO_UDP:
-			return ICE_UDP_ILOS;
-		}
-	} else {
-		switch (ip_proto) {
-		case IPPROTO_TCP:
-			return ICE_TCP_IL;
-		case IPPROTO_UDP:
-			return ICE_UDP_OF;
-		}
+	switch (ip_proto) {
+	case IPPROTO_TCP:
+		return ICE_TCP_IL;
+	case IPPROTO_UDP:
+		return ICE_UDP_ILOS;
 	}
 
 	return 0;
@@ -191,8 +183,9 @@ ice_tc_fill_tunnel_outer(u32 flags, struct ice_tc_flower_fltr *fltr,
 		i++;
 	}
 
-	if (flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT) {
-		list[i].type = ice_proto_type_from_l4_port(false, hdr->l3_key.ip_proto);
+	if ((flags & ICE_TC_FLWR_FIELD_ENC_DEST_L4_PORT) &&
+	    hdr->l3_key.ip_proto == IPPROTO_UDP) {
+		list[i].type = ICE_UDP_OF;
 		list[i].h_u.l4_hdr.dst_port = hdr->l4_key.dst_port;
 		list[i].m_u.l4_hdr.dst_port = hdr->l4_mask.dst_port;
 		i++;
@@ -317,7 +310,7 @@ ice_tc_fill_rules(struct ice_hw *hw, u32 flags,
 		     ICE_TC_FLWR_FIELD_SRC_L4_PORT)) {
 		struct ice_tc_l4_hdr *l4_key, *l4_mask;
 
-		list[i].type = ice_proto_type_from_l4_port(inner, headers->l3_key.ip_proto);
+		list[i].type = ice_proto_type_from_l4_port(headers->l3_key.ip_proto);
 		l4_key = &headers->l4_key;
 		l4_mask = &headers->l4_mask;
 
@@ -802,7 +795,8 @@ ice_parse_tunnel_attr(struct net_device *dev, struct flow_rule *rule,
 		headers->l3_mask.ttl = match.mask->ttl;
 	}
 
-	if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_PORTS)) {
+	if (flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_ENC_PORTS) &&
+	    fltr->tunnel_type != TNL_VXLAN && fltr->tunnel_type != TNL_GENEVE) {
 		struct flow_match_ports match;
 
 		flow_rule_match_enc_ports(rule, &match);
diff --git a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
index 217ff5e9a6f1..6427e7ec93de 100644
--- a/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
+++ b/drivers/net/ethernet/intel/ice/ice_virtchnl_pf.c
@@ -1617,6 +1617,7 @@ bool ice_reset_all_vfs(struct ice_pf *pf, bool is_vflr)
 		ice_vc_set_default_allowlist(vf);
 
 		ice_vf_fdir_exit(vf);
+		ice_vf_fdir_init(vf);
 		/* clean VF control VSI when resetting VFs since it should be
 		 * setup only when VF creates its first FDIR rule.
 		 */
@@ -1747,6 +1748,7 @@ bool ice_reset_vf(struct ice_vf *vf, bool is_vflr)
 	}
 
 	ice_vf_fdir_exit(vf);
+	ice_vf_fdir_init(vf);
 	/* clean VF control VSI when resetting VF since it should be setup
 	 * only when VF creates its first FDIR rule.
 	 */
@@ -2021,6 +2023,10 @@ static int ice_ena_vfs(struct ice_pf *pf, u16 num_vfs)
 	if (ret)
 		goto err_unroll_sriov;
 
+	/* rearm global interrupts */
+	if (test_and_clear_bit(ICE_OICR_INTR_DIS, pf->state))
+		ice_irq_dynamic_ena(hw, NULL, NULL);
+
 	return 0;
 
 err_unroll_sriov: