1 files changed, 104 insertions, 64 deletions

diff --git a/drivers/net/ethernet/freescale/enetc/enetc.c b/drivers/net/ethernet/freescale/enetc/enetc.c
index 2106861463e4..dcc3fbac3481 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc.c
@@ -36,6 +36,42 @@ static void enetc_change_preemptible_tcs(struct enetc_ndev_priv *priv,
 	enetc_mm_commit_preemptible_tcs(priv);
 }
 
+static int enetc_mac_addr_hash_idx(const u8 *addr)
+{
+	u64 fold = __swab64(ether_addr_to_u64(addr)) >> 16;
+	u64 mask = 0;
+	int res = 0;
+	int i;
+
+	for (i = 0; i < 8; i++)
+		mask |= BIT_ULL(i * 6);
+
+	for (i = 0; i < 6; i++)
+		res |= (hweight64(fold & (mask << i)) & 0x1) << i;
+
+	return res;
+}
+
+void enetc_add_mac_addr_ht_filter(struct enetc_mac_filter *filter,
+				  const unsigned char *addr)
+{
+	int idx = enetc_mac_addr_hash_idx(addr);
+
+	/* add hash table entry */
+	__set_bit(idx, filter->mac_hash_table);
+	filter->mac_addr_cnt++;
+}
+EXPORT_SYMBOL_GPL(enetc_add_mac_addr_ht_filter);
+
+void enetc_reset_mac_addr_filter(struct enetc_mac_filter *filter)
+{
+	filter->mac_addr_cnt = 0;
+
+	bitmap_zero(filter->mac_hash_table,
+		    ENETC_MADDR_HASH_TBL_SZ);
+}
+EXPORT_SYMBOL_GPL(enetc_reset_mac_addr_filter);
+
 static int enetc_num_stack_tx_queues(struct enetc_ndev_priv *priv)
 {
 	int num_tx_rings = priv->num_tx_rings;
@@ -1850,6 +1886,16 @@ static void enetc_xdp_drop(struct enetc_bdr *rx_ring, int rx_ring_first,
 	}
 }
 
+static void enetc_bulk_flip_buff(struct enetc_bdr *rx_ring, int rx_ring_first,
+				 int rx_ring_last)
+{
+	while (rx_ring_first != rx_ring_last) {
+		enetc_flip_rx_buff(rx_ring,
+				   &rx_ring->rx_swbd[rx_ring_first]);
+		enetc_bdr_idx_inc(rx_ring, &rx_ring_first);
+	}
+}
+
 static int enetc_clean_rx_ring_xdp(struct enetc_bdr *rx_ring,
 				   struct napi_struct *napi, int work_limit,
 				   struct bpf_prog *prog)
@@ -1868,11 +1914,10 @@ static int enetc_clean_rx_ring_xdp(struct enetc_bdr *rx_ring,
 
 	while (likely(rx_frm_cnt < work_limit)) {
 		union enetc_rx_bd *rxbd, *orig_rxbd;
-		int orig_i, orig_cleaned_cnt;
 		struct xdp_buff xdp_buff;
 		struct sk_buff *skb;
+		int orig_i, err;
 		u32 bd_status;
-		int err;
 
 		rxbd = enetc_rxbd(rx_ring, i);
 		bd_status = le32_to_cpu(rxbd->r.lstatus);
@@ -1887,7 +1932,6 @@ static int enetc_clean_rx_ring_xdp(struct enetc_bdr *rx_ring,
 			break;
 
 		orig_rxbd = rxbd;
-		orig_cleaned_cnt = cleaned_cnt;
 		orig_i = i;
 
 		enetc_build_xdp_buff(rx_ring, bd_status, &rxbd, &i,
@@ -1915,15 +1959,21 @@ static int enetc_clean_rx_ring_xdp(struct enetc_bdr *rx_ring,
 			rx_ring->stats.xdp_drops++;
 			break;
 		case XDP_PASS:
-			rxbd = orig_rxbd;
-			cleaned_cnt = orig_cleaned_cnt;
-			i = orig_i;
-
-			skb = enetc_build_skb(rx_ring, bd_status, &rxbd,
-					      &i, &cleaned_cnt,
-					      ENETC_RXB_DMA_SIZE_XDP);
-			if (unlikely(!skb))
+			skb = xdp_build_skb_from_buff(&xdp_buff);
+			/* Probably under memory pressure, stop NAPI */
+			if (unlikely(!skb)) {
+				enetc_xdp_drop(rx_ring, orig_i, i);
+				rx_ring->stats.xdp_drops++;
 				goto out;
+			}
+
+			enetc_get_offloads(rx_ring, orig_rxbd, skb);
+
+			/* These buffers are about to be owned by the stack.
+			 * Update our buffer cache (the rx_swbd array elements)
+			 * with their other page halves.
+			 */
+			enetc_bulk_flip_buff(rx_ring, orig_i, i);
 
 			napi_gro_receive(napi, skb);
 			break;
@@ -1965,11 +2015,7 @@ static int enetc_clean_rx_ring_xdp(struct enetc_bdr *rx_ring,
 				enetc_xdp_drop(rx_ring, orig_i, i);
 				rx_ring->stats.xdp_redirect_failures++;
 			} else {
-				while (orig_i != i) {
-					enetc_flip_rx_buff(rx_ring,
-							   &rx_ring->rx_swbd[orig_i]);
-					enetc_bdr_idx_inc(rx_ring, &orig_i);
-				}
+				enetc_bulk_flip_buff(rx_ring, orig_i, i);
 				xdp_redirect_frm_cnt++;
 				rx_ring->stats.xdp_redirect++;
 			}
@@ -2369,7 +2415,7 @@ static int enetc_setup_default_rss_table(struct enetc_si *si, int num_groups)
 	for (i = 0; i < si->num_rss; i++)
 		rss_table[i] = i % num_groups;
 
-	enetc_set_rss_table(si, rss_table, si->num_rss);
+	si->ops->set_rss_table(si, rss_table, si->num_rss);
 
 	kfree(rss_table);
 
@@ -2384,6 +2430,20 @@ static void enetc_set_lso_flags_mask(struct enetc_hw *hw)
 	enetc_wr(hw, ENETC4_SILSOSFMR1, 0);
 }
 
+static void enetc_set_rss(struct net_device *ndev, int en)
+{
+	struct enetc_ndev_priv *priv = netdev_priv(ndev);
+	struct enetc_hw *hw = &priv->si->hw;
+	u32 reg;
+
+	enetc_wr(hw, ENETC_SIRBGCR, priv->num_rx_rings);
+
+	reg = enetc_rd(hw, ENETC_SIMR);
+	reg &= ~ENETC_SIMR_RSSE;
+	reg |= (en) ? ENETC_SIMR_RSSE : 0;
+	enetc_wr(hw, ENETC_SIMR, reg);
+}
+
 int enetc_configure_si(struct enetc_ndev_priv *priv)
 {
 	struct enetc_si *si = priv->si;
@@ -2400,13 +2460,13 @@ int enetc_configure_si(struct enetc_ndev_priv *priv)
 	if (si->hw_features & ENETC_SI_F_LSO)
 		enetc_set_lso_flags_mask(hw);
 
-	/* TODO: RSS support for i.MX95 will be supported later, and the
-	 * is_enetc_rev1() condition will be removed
-	 */
-	if (si->num_rss && is_enetc_rev1(si)) {
+	if (si->num_rss) {
 		err = enetc_setup_default_rss_table(si, priv->num_rx_rings);
 		if (err)
 			return err;
+
+		if (priv->ndev->features & NETIF_F_RXHASH)
+			enetc_set_rss(priv->ndev, true);
 	}
 
 	return 0;
@@ -3199,22 +3259,6 @@ struct net_device_stats *enetc_get_stats(struct net_device *ndev)
 }
 EXPORT_SYMBOL_GPL(enetc_get_stats);
 
-static int enetc_set_rss(struct net_device *ndev, int en)
-{
-	struct enetc_ndev_priv *priv = netdev_priv(ndev);
-	struct enetc_hw *hw = &priv->si->hw;
-	u32 reg;
-
-	enetc_wr(hw, ENETC_SIRBGCR, priv->num_rx_rings);
-
-	reg = enetc_rd(hw, ENETC_SIMR);
-	reg &= ~ENETC_SIMR_RSSE;
-	reg |= (en) ? ENETC_SIMR_RSSE : 0;
-	enetc_wr(hw, ENETC_SIMR, reg);
-
-	return 0;
-}
-
 static void enetc_enable_rxvlan(struct net_device *ndev, bool en)
 {
 	struct enetc_ndev_priv *priv = netdev_priv(ndev);
@@ -3252,16 +3296,17 @@ void enetc_set_features(struct net_device *ndev, netdev_features_t features)
 }
 EXPORT_SYMBOL_GPL(enetc_set_features);
 
-static int enetc_hwtstamp_set(struct net_device *ndev, struct ifreq *ifr)
+int enetc_hwtstamp_set(struct net_device *ndev,
+		       struct kernel_hwtstamp_config *config,
+		       struct netlink_ext_ack *extack)
 {
 	struct enetc_ndev_priv *priv = netdev_priv(ndev);
 	int err, new_offloads = priv->active_offloads;
-	struct hwtstamp_config config;
 
-	if (copy_from_user(&config, ifr->ifr_data, sizeof(config)))
-		return -EFAULT;
+	if (!IS_ENABLED(CONFIG_FSL_ENETC_PTP_CLOCK))
+		return -EOPNOTSUPP;
 
-	switch (config.tx_type) {
+	switch (config->tx_type) {
 	case HWTSTAMP_TX_OFF:
 		new_offloads &= ~ENETC_F_TX_TSTAMP_MASK;
 		break;
@@ -3280,13 +3325,13 @@ static int enetc_hwtstamp_set(struct net_device *ndev, struct ifreq *ifr)
 		return -ERANGE;
 	}
 
-	switch (config.rx_filter) {
+	switch (config->rx_filter) {
 	case HWTSTAMP_FILTER_NONE:
 		new_offloads &= ~ENETC_F_RX_TSTAMP;
 		break;
 	default:
 		new_offloads |= ENETC_F_RX_TSTAMP;
-		config.rx_filter = HWTSTAMP_FILTER_ALL;
+		config->rx_filter = HWTSTAMP_FILTER_ALL;
 	}
 
 	if ((new_offloads ^ priv->active_offloads) & ENETC_F_RX_TSTAMP) {
@@ -3299,42 +3344,36 @@ static int enetc_hwtstamp_set(struct net_device *ndev, struct ifreq *ifr)
 
 	priv->active_offloads = new_offloads;
 
-	return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?
-	       -EFAULT : 0;
+	return 0;
 }
+EXPORT_SYMBOL_GPL(enetc_hwtstamp_set);
 
-static int enetc_hwtstamp_get(struct net_device *ndev, struct ifreq *ifr)
+int enetc_hwtstamp_get(struct net_device *ndev,
+		       struct kernel_hwtstamp_config *config)
 {
 	struct enetc_ndev_priv *priv = netdev_priv(ndev);
-	struct hwtstamp_config config;
 
-	config.flags = 0;
+	if (!IS_ENABLED(CONFIG_FSL_ENETC_PTP_CLOCK))
+		return -EOPNOTSUPP;
 
 	if (priv->active_offloads & ENETC_F_TX_ONESTEP_SYNC_TSTAMP)
-		config.tx_type = HWTSTAMP_TX_ONESTEP_SYNC;
+		config->tx_type = HWTSTAMP_TX_ONESTEP_SYNC;
 	else if (priv->active_offloads & ENETC_F_TX_TSTAMP)
-		config.tx_type = HWTSTAMP_TX_ON;
+		config->tx_type = HWTSTAMP_TX_ON;
 	else
-		config.tx_type = HWTSTAMP_TX_OFF;
+		config->tx_type = HWTSTAMP_TX_OFF;
 
-	config.rx_filter = (priv->active_offloads & ENETC_F_RX_TSTAMP) ?
-			    HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE;
+	config->rx_filter = (priv->active_offloads & ENETC_F_RX_TSTAMP) ?
+			     HWTSTAMP_FILTER_ALL : HWTSTAMP_FILTER_NONE;
 
-	return copy_to_user(ifr->ifr_data, &config, sizeof(config)) ?
-	       -EFAULT : 0;
+	return 0;
 }
+EXPORT_SYMBOL_GPL(enetc_hwtstamp_get);
 
 int enetc_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd)
 {
 	struct enetc_ndev_priv *priv = netdev_priv(ndev);
 
-	if (IS_ENABLED(CONFIG_FSL_ENETC_PTP_CLOCK)) {
-		if (cmd == SIOCSHWTSTAMP)
-			return enetc_hwtstamp_set(ndev, rq);
-		if (cmd == SIOCGHWTSTAMP)
-			return enetc_hwtstamp_get(ndev, rq);
-	}
-
 	if (!priv->phylink)
 		return -EOPNOTSUPP;
 
@@ -3362,7 +3401,8 @@ static int enetc_int_vector_init(struct enetc_ndev_priv *priv, int i,
 	bdr->buffer_offset = ENETC_RXB_PAD;
 	priv->rx_ring[i] = bdr;
 
-	err = xdp_rxq_info_reg(&bdr->xdp.rxq, priv->ndev, i, 0);
+	err = __xdp_rxq_info_reg(&bdr->xdp.rxq, priv->ndev, i, 0,
+				 ENETC_RXB_DMA_SIZE_XDP);
 	if (err)
 		goto free_vector;