> +/* locking is handled by the caller */
> +static int ipqess_edma_rx_buf_alloc_napi(struct ipqess_edma_rx_ring *rx_ring)
> +{
> + struct ipqess_edma_buf *buf = &rx_ring->buf[rx_ring->head];
> +
> + buf->skb = napi_alloc_skb(&rx_ring->napi_rx,
> + IPQESS_EDMA_RX_HEAD_BUFF_SIZE);
You might want to look at using the page_pool code. Its shown to be
more efficient for some drivers, e.g. the FEC.
> +static int ipqess_edma_redirect(struct ipqess_edma_rx_ring *rx_ring,
> + struct sk_buff *skb, int port_id)
> +{
> + struct ipqess_port *port;
> +
> + if (port_id == 0) {
> + /* The switch probably redirected an unknown frame to the CPU port
> + * (IGMP,BC,unknown MC, unknown UC)
> + */
> + return -EINVAL;
> + }
> +
> + if (port_id < 0 || port_id > QCA8K_NUM_PORTS) {
> + dev_warn(rx_ring->edma->sw->priv->dev,
> + "received packet tagged with out-of-bounds port id %d\n",
> + port_id);
Maybe rate limit this?
> +static int ipqess_port_set_mac_address(struct net_device *netdev, void *a)
> +{
> + struct sockaddr *addr = a;
> + int err;
> +
> + if (!is_valid_ether_addr(addr->sa_data))
> + return -EADDRNOTAVAIL;
I would be surprised if that could happen.
> +static int
> +ipqess_port_fdb_do_dump(const unsigned char *addr, u16 vid,
> + bool is_static, void *data)
> +{
> + struct ipqess_port_dump_ctx *dump = data;
> + u32 portid = NETLINK_CB(dump->cb->skb).portid;
> + u32 seq = dump->cb->nlh->nlmsg_seq;
> + struct nlmsghdr *nlh;
> + struct ndmsg *ndm;
It looks like you can reuse dsa_slave_port_fdb_do_dump(), if you
export it.
> +static int
> +ipqess_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
> + struct net_device *dev, struct net_device *filter_dev,
> + int *idx)
> +{
> + struct ipqess_port *port = netdev_priv(dev);
> + struct qca8k_priv *priv = port->sw->priv;
> + struct ipqess_port_dump_ctx dump = {
> + .dev = dev,
> + .skb = skb,
> + .cb = cb,
> + .idx = *idx,
> + };
And with a little bit of refactoring, you should be able to use the
core of qca8k_port_fdb_dump(). All that seems to differ is how you get
to the struct qca8k_priv *priv.
That then makes me wounder if there is more code here which could be
removed with a little refactoring of the DSA driver?
> +static void ipqess_port_get_drvinfo(struct net_device *dev,
> + struct ethtool_drvinfo *drvinfo)
> +{
> + strscpy(drvinfo->driver, "qca8k-ipqess", sizeof(drvinfo->driver));
> + strscpy(drvinfo->fw_version, "N/A", sizeof(drvinfo->fw_version));
If you leave this alone, it will contain the git hash of the kernel,
which is more useful than 'N/A'.
> + strscpy(drvinfo->bus_info, "platform", sizeof(drvinfo->bus_info));
> +}
> +
> +static int ipqess_port_get_eeprom_len(struct net_device *dev)
> +{
> + return 0;
> +}
Is this actually useful? What does it default to if not provided? 42?
> +static void ipqess_port_get_ethtool_stats(struct net_device *dev,
> + struct ethtool_stats *stats,
> + uint64_t *data)
> +{
...
> + for (c = 0; c < priv->info->mib_count; c++) {
> + mib = &ar8327_mib[c];
> + reg = QCA8K_PORT_MIB_COUNTER(port->index) + mib->offset;
> +
> + ret = qca8k_read(priv, reg, &val);
> + if (ret < 0)
> + continue;
Given the switch is built in, is this fast? The 8k driver avoids doing
register reads for this.
> +static int ipqess_port_set_eee(struct net_device *dev, struct ethtool_eee *eee)
> +{
> + struct ipqess_port *port = netdev_priv(dev);
> + int ret;
> + u32 lpi_en = QCA8K_REG_EEE_CTRL_LPI_EN(port->index);
> + struct qca8k_priv *priv = port->sw->priv;
> + u32 reg;
> +
> + /* Port's PHY and MAC both need to be EEE capable */
> + if (!dev->phydev || !port->pl)
> + return -ENODEV;
> +
> + mutex_lock(&priv->reg_mutex);
> + ret = qca8k_read(priv, QCA8K_REG_EEE_CTRL, ®);
> + if (ret < 0) {
> + mutex_unlock(&priv->reg_mutex);
> + return ret;
> + }
> +
> + if (eee->eee_enabled)
> + reg |= lpi_en;
> + else
> + reg &= ~lpi_en;
> + ret = qca8k_write(priv, QCA8K_REG_EEE_CTRL, reg);
> + mutex_unlock(&priv->reg_mutex);
Everybody gets EEE wrong. The best example to copy is mvneta.
I also have a patchset which basically re-writes EEE in all the
drivers and moves as much as possible into the core. Those patches may
someday make it in. But until then, copy mvneta.
Andrew
