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net: bcmgenet: add support for RX_CLS_FLOW_DISC

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Now that the DESC_INDEX ring descriptor is no longer used we can
enable hardware discarding of flows by routing them to a queue
that is not enabled.

Signed-off-by: Doug Berger <opendmb@gmail.com>
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20250306192643.2383632-8-opendmb@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Doug Berger 2025-03-06 11:26:35 -08:00 committed by Jakub Kicinski
parent 3b5d4f5a82
commit 6d31f8fc6c
1 changed files with 8 additions and 5 deletions
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13
drivers/net/ethernet/broadcom/genet/bcmgenet.c
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@ -599,7 +599,7 @@ static void bcmgenet_hfb_create_rxnfc_filter(struct bcmgenet_priv *priv,
struct bcmgenet_rxnfc_rule *rule)
{
struct ethtool_rx_flow_spec *fs = &rule->fs;
u32 offset = 0, f_length = 0, f;
u32 offset = 0, f_length = 0, f, q;
u8 val_8, mask_8;
__be16 val_16;
u16 mask_16;
@ -688,11 +688,13 @@ static void bcmgenet_hfb_create_rxnfc_filter(struct bcmgenet_priv *priv,
bcmgenet_hfb_set_filter_length(priv, f, 2 * f_length);
if (fs->ring_cookie == RX_CLS_FLOW_WAKE)
bcmgenet_hfb_set_filter_rx_queue_mapping(priv, f, 0);
q = 0;
else if (fs->ring_cookie == RX_CLS_FLOW_DISC)
q = priv->hw_params->rx_queues + 1;
else
/* Other Rx rings are direct mapped here */
bcmgenet_hfb_set_filter_rx_queue_mapping(priv, f,
fs->ring_cookie);
q = fs->ring_cookie;
bcmgenet_hfb_set_filter_rx_queue_mapping(priv, f, q);
bcmgenet_hfb_enable_filter(priv, f);
rule->state = BCMGENET_RXNFC_STATE_ENABLED;
}
@ -1444,7 +1446,8 @@ static int bcmgenet_insert_flow(struct net_device *dev,
}
if (cmd->fs.ring_cookie > priv->hw_params->rx_queues &&
cmd->fs.ring_cookie != RX_CLS_FLOW_WAKE) {
cmd->fs.ring_cookie != RX_CLS_FLOW_WAKE &&
cmd->fs.ring_cookie != RX_CLS_FLOW_DISC) {
netdev_err(dev, "rxnfc: Unsupported action (%llu)\n",
cmd->fs.ring_cookie);
return -EINVAL;