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net: meth: Add set_rx_mode hook to fix ICMPv6 neighbor discovery
SGI IP32 (O2)'s ethernet driver (meth) lacks a set_rx_mode function, which prevents IPv6 from working completely because any ICMPv6 neighbor solicitation requests aren't picked up by the driver. So the machine can ping out and connect to other systems, but other systems will have a very hard time connecting to the O2. Signed-off-by: Joshua Kinard <kumba@gentoo.org> Signed-off-by: David S. Miller <davem@davemloft.net>
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commit
c0d2b8376a
2 changed files with 48 additions and 2 deletions
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@ -95,7 +95,7 @@ struct mace_video {
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* Ethernet interface
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* Ethernet interface
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*/
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*/
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struct mace_ethernet {
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struct mace_ethernet {
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volatile unsigned long mac_ctrl;
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volatile u64 mac_ctrl;
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volatile unsigned long int_stat;
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volatile unsigned long int_stat;
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volatile unsigned long dma_ctrl;
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volatile unsigned long dma_ctrl;
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volatile unsigned long timer;
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volatile unsigned long timer;
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@ -28,6 +28,7 @@
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#include <linux/tcp.h> /* struct tcphdr */
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#include <linux/tcp.h> /* struct tcphdr */
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#include <linux/skbuff.h>
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#include <linux/skbuff.h>
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#include <linux/mii.h> /* MII definitions */
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#include <linux/mii.h> /* MII definitions */
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#include <linux/crc32.h>
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#include <asm/ip32/mace.h>
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#include <asm/ip32/mace.h>
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#include <asm/ip32/ip32_ints.h>
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#include <asm/ip32/ip32_ints.h>
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@ -57,13 +58,20 @@ static const char *meth_str="SGI O2 Fast Ethernet";
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static int timeout = TX_TIMEOUT;
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static int timeout = TX_TIMEOUT;
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module_param(timeout, int, 0);
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module_param(timeout, int, 0);
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/*
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* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
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* MACE Ethernet uses a 64 element hash table based on the Ethernet CRC.
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*/
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#define METH_MCF_LIMIT 32
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/*
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/*
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* This structure is private to each device. It is used to pass
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* This structure is private to each device. It is used to pass
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* packets in and out, so there is place for a packet
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* packets in and out, so there is place for a packet
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*/
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*/
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struct meth_private {
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struct meth_private {
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/* in-memory copy of MAC Control register */
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/* in-memory copy of MAC Control register */
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unsigned long mac_ctrl;
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u64 mac_ctrl;
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/* in-memory copy of DMA Control register */
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/* in-memory copy of DMA Control register */
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unsigned long dma_ctrl;
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unsigned long dma_ctrl;
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/* address of PHY, used by mdio_* functions, initialized in mdio_probe */
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/* address of PHY, used by mdio_* functions, initialized in mdio_probe */
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@ -79,6 +87,9 @@ struct meth_private {
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struct sk_buff *rx_skbs[RX_RING_ENTRIES];
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struct sk_buff *rx_skbs[RX_RING_ENTRIES];
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unsigned long rx_write;
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unsigned long rx_write;
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/* Multicast filter. */
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u64 mcast_filter;
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spinlock_t meth_lock;
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spinlock_t meth_lock;
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};
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};
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@ -765,6 +776,40 @@ static int meth_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
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}
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}
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}
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}
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static void meth_set_rx_mode(struct net_device *dev)
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{
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struct meth_private *priv = netdev_priv(dev);
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unsigned long flags;
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netif_stop_queue(dev);
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spin_lock_irqsave(&priv->meth_lock, flags);
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priv->mac_ctrl &= ~METH_PROMISC;
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if (dev->flags & IFF_PROMISC) {
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priv->mac_ctrl |= METH_PROMISC;
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priv->mcast_filter = 0xffffffffffffffffUL;
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} else if ((netdev_mc_count(dev) > METH_MCF_LIMIT) ||
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(dev->flags & IFF_ALLMULTI)) {
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priv->mac_ctrl |= METH_ACCEPT_AMCAST;
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priv->mcast_filter = 0xffffffffffffffffUL;
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} else {
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struct netdev_hw_addr *ha;
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priv->mac_ctrl |= METH_ACCEPT_MCAST;
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netdev_for_each_mc_addr(ha, dev)
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set_bit((ether_crc(ETH_ALEN, ha->addr) >> 26),
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(volatile unsigned long *)&priv->mcast_filter);
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}
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/* Write the changes to the chip registers. */
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mace->eth.mac_ctrl = priv->mac_ctrl;
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mace->eth.mcast_filter = priv->mcast_filter;
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/* Done! */
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spin_unlock_irqrestore(&priv->meth_lock, flags);
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netif_wake_queue(dev);
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}
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static const struct net_device_ops meth_netdev_ops = {
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static const struct net_device_ops meth_netdev_ops = {
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.ndo_open = meth_open,
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.ndo_open = meth_open,
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.ndo_stop = meth_release,
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.ndo_stop = meth_release,
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@ -774,6 +819,7 @@ static const struct net_device_ops meth_netdev_ops = {
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.ndo_change_mtu = eth_change_mtu,
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.ndo_change_mtu = eth_change_mtu,
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.ndo_validate_addr = eth_validate_addr,
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.ndo_validate_addr = eth_validate_addr,
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.ndo_set_mac_address = eth_mac_addr,
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.ndo_set_mac_address = eth_mac_addr,
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.ndo_set_rx_mode = meth_set_rx_mode,
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};
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};
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/*
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/*
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