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Miller" Cc: Florian Fainelli , Eric Dumazet , Jakub Kicinski , Paolo Abeni , bcm-kernel-feedback-list@broadcom.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, Doug Berger Subject: [PATCH net-next v2] net: bcmgenet: add RX_CLS_LOC_ANY support Date: Wed, 19 Oct 2022 14:51:23 -0700 Message-Id: <20221019215123.316997-1-opendmb@gmail.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If a matching flow spec exists its current location is as good as ANY. If not add the new flow spec at the first available location. Signed-off-by: Doug Berger --- changes since v1: - removed __u32 tmp variable. Thanks Jakub! .../net/ethernet/broadcom/genet/bcmgenet.c | 31 ++++++++++++++++--- 1 file changed, 27 insertions(+), 4 deletions(-) diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c index 25c450606985..a8ce8d0cf9c4 100644 --- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c +++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c @@ -1387,7 +1387,8 @@ static int bcmgenet_validate_flow(struct net_device *dev, struct ethtool_usrip4_spec *l4_mask; struct ethhdr *eth_mask; - if (cmd->fs.location >= MAX_NUM_OF_FS_RULES) { + if (cmd->fs.location >= MAX_NUM_OF_FS_RULES && + cmd->fs.location != RX_CLS_LOC_ANY) { netdev_err(dev, "rxnfc: Invalid location (%d)\n", cmd->fs.location); return -EINVAL; @@ -1452,7 +1453,7 @@ static int bcmgenet_insert_flow(struct net_device *dev, { struct bcmgenet_priv *priv = netdev_priv(dev); struct bcmgenet_rxnfc_rule *loc_rule; - int err; + int err, i; if (priv->hw_params->hfb_filter_size < 128) { netdev_err(dev, "rxnfc: Not supported by this device\n"); @@ -1470,7 +1471,29 @@ static int bcmgenet_insert_flow(struct net_device *dev, if (err) return err; - loc_rule = &priv->rxnfc_rules[cmd->fs.location]; + if (cmd->fs.location == RX_CLS_LOC_ANY) { + list_for_each_entry(loc_rule, &priv->rxnfc_list, list) { + cmd->fs.location = loc_rule->fs.location; + err = memcmp(&loc_rule->fs, &cmd->fs, + sizeof(struct ethtool_rx_flow_spec)); + if (!err) + /* rule exists so return current location */ + return 0; + } + for (i = 0; i < MAX_NUM_OF_FS_RULES; i++) { + loc_rule = &priv->rxnfc_rules[i]; + if (loc_rule->state == BCMGENET_RXNFC_STATE_UNUSED) { + cmd->fs.location = i; + break; + } + } + if (i == MAX_NUM_OF_FS_RULES) { + cmd->fs.location = RX_CLS_LOC_ANY; + return -ENOSPC; + } + } else { + loc_rule = &priv->rxnfc_rules[cmd->fs.location]; + } if (loc_rule->state == BCMGENET_RXNFC_STATE_ENABLED) bcmgenet_hfb_disable_filter(priv, cmd->fs.location); if (loc_rule->state != BCMGENET_RXNFC_STATE_UNUSED) { @@ -1583,7 +1606,7 @@ static int bcmgenet_get_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd, break; case ETHTOOL_GRXCLSRLCNT: cmd->rule_cnt = bcmgenet_get_num_flows(priv); - cmd->data = MAX_NUM_OF_FS_RULES; + cmd->data = MAX_NUM_OF_FS_RULES | RX_CLS_LOC_SPECIAL; break; case ETHTOOL_GRXCLSRULE: err = bcmgenet_get_flow(dev, cmd, cmd->fs.location); -- 2.25.1