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path: root/drivers/net/ethernet/mellanox/mlx4/en_rx.c
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Diffstat (limited to 'drivers/net/ethernet/mellanox/mlx4/en_rx.c')
-rw-r--r--drivers/net/ethernet/mellanox/mlx4/en_rx.c59
1 files changed, 37 insertions, 22 deletions
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_rx.c b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
index fed26d8..ce38654 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_rx.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_rx.c
@@ -563,9 +563,6 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
unsigned int length;
int polled = 0;
int ip_summed;
- struct ethhdr *ethh;
- dma_addr_t dma;
- u64 s_mac;
int factor = priv->cqe_factor;
if (!priv->port_up)
@@ -603,21 +600,41 @@ int mlx4_en_process_rx_cq(struct net_device *dev, struct mlx4_en_cq *cq, int bud
goto next;
}
- /* Get pointer to first fragment since we haven't skb yet and
- * cast it to ethhdr struct */
- dma = be64_to_cpu(rx_desc->data[0].addr);
- dma_sync_single_for_cpu(priv->ddev, dma, sizeof(*ethh),
- DMA_FROM_DEVICE);
- ethh = (struct ethhdr *)(page_address(frags[0].page) +
- frags[0].offset);
- s_mac = mlx4_en_mac_to_u64(ethh->h_source);
-
- /* If source MAC is equal to our own MAC and not performing
- * the selftest or flb disabled - drop the packet */
- if (s_mac == priv->mac &&
- !((dev->features & NETIF_F_LOOPBACK) ||
- priv->validate_loopback))
- goto next;
+ /* Check if we need to drop the packet if SRIOV is not enabled
+ * and not performing the selftest or flb disabled
+ */
+ if (priv->flags & MLX4_EN_FLAG_RX_FILTER_NEEDED) {
+ struct ethhdr *ethh;
+ dma_addr_t dma;
+ /* Get pointer to first fragment since we haven't
+ * skb yet and cast it to ethhdr struct
+ */
+ dma = be64_to_cpu(rx_desc->data[0].addr);
+ dma_sync_single_for_cpu(priv->ddev, dma, sizeof(*ethh),
+ DMA_FROM_DEVICE);
+ ethh = (struct ethhdr *)(page_address(frags[0].page) +
+ frags[0].offset);
+
+ if (is_multicast_ether_addr(ethh->h_dest)) {
+ struct mlx4_mac_entry *entry;
+ struct hlist_node *n;
+ struct hlist_head *bucket;
+ unsigned int mac_hash;
+
+ /* Drop the packet, since HW loopback-ed it */
+ mac_hash = ethh->h_source[MLX4_EN_MAC_HASH_IDX];
+ bucket = &priv->mac_hash[mac_hash];
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(entry, n, bucket, hlist) {
+ if (ether_addr_equal_64bits(entry->mac,
+ ethh->h_source)) {
+ rcu_read_unlock();
+ goto next;
+ }
+ }
+ rcu_read_unlock();
+ }
+ }
/*
* Packet is OK - process it.
@@ -835,11 +852,9 @@ static int mlx4_en_config_rss_qp(struct mlx4_en_priv *priv, int qpn,
struct mlx4_qp_context *context;
int err = 0;
- context = kmalloc(sizeof *context , GFP_KERNEL);
- if (!context) {
- en_err(priv, "Failed to allocate qp context\n");
+ context = kmalloc(sizeof(*context), GFP_KERNEL);
+ if (!context)
return -ENOMEM;
- }
err = mlx4_qp_alloc(mdev->dev, qpn, qp);
if (err) {
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