* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
- *
- * $Id: ipoib_multicast.c 1362 2004-12-18 15:56:29Z roland $
*/
#include <linux/skbuff.h>
#include <linux/inetdevice.h>
#include <linux/delay.h>
#include <linux/completion.h>
+#include <linux/slab.h>
#include <net/dst.h>
struct net_device *dev = mcast->dev;
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_neigh *neigh, *tmp;
- unsigned long flags;
int tx_dropped = 0;
- ipoib_dbg_mcast(netdev_priv(dev),
- "deleting multicast group " IPOIB_GID_FMT "\n",
- IPOIB_GID_ARG(mcast->mcmember.mgid));
+ ipoib_dbg_mcast(netdev_priv(dev), "deleting multicast group %pI6\n",
+ mcast->mcmember.mgid.raw);
- spin_lock_irqsave(&priv->lock, flags);
+ spin_lock_irq(&priv->lock);
list_for_each_entry_safe(neigh, tmp, &mcast->neigh_list, list) {
/*
ipoib_neigh_free(dev, neigh);
}
- spin_unlock_irqrestore(&priv->lock, flags);
+ spin_unlock_irq(&priv->lock);
if (mcast->ah)
ipoib_put_ah(mcast->ah);
dev_kfree_skb_any(skb_dequeue(&mcast->pkt_queue));
}
- spin_lock_irqsave(&priv->tx_lock, flags);
- priv->stats.tx_dropped += tx_dropped;
- spin_unlock_irqrestore(&priv->tx_lock, flags);
+ netif_tx_lock_bh(dev);
+ dev->stats.tx_dropped += tx_dropped;
+ netif_tx_unlock_bh(dev);
kfree(mcast);
}
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_ah *ah;
int ret;
+ int set_qkey = 0;
mcast->mcmember = *mcmember;
/* Set the cached Q_Key before we attach if it's the broadcast group */
if (!memcmp(mcast->mcmember.mgid.raw, priv->dev->broadcast + 4,
sizeof (union ib_gid))) {
+ spin_lock_irq(&priv->lock);
+ if (!priv->broadcast) {
+ spin_unlock_irq(&priv->lock);
+ return -EAGAIN;
+ }
priv->qkey = be32_to_cpu(priv->broadcast->mcmember.qkey);
+ spin_unlock_irq(&priv->lock);
priv->tx_wr.wr.ud.remote_qkey = priv->qkey;
+ set_qkey = 1;
}
if (!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) {
if (test_and_set_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) {
- ipoib_warn(priv, "multicast group " IPOIB_GID_FMT
- " already attached\n",
- IPOIB_GID_ARG(mcast->mcmember.mgid));
+ ipoib_warn(priv, "multicast group %pI6 already attached\n",
+ mcast->mcmember.mgid.raw);
return 0;
}
ret = ipoib_mcast_attach(dev, be16_to_cpu(mcast->mcmember.mlid),
- &mcast->mcmember.mgid);
+ &mcast->mcmember.mgid, set_qkey);
if (ret < 0) {
- ipoib_warn(priv, "couldn't attach QP to multicast group "
- IPOIB_GID_FMT "\n",
- IPOIB_GID_ARG(mcast->mcmember.mgid));
+ ipoib_warn(priv, "couldn't attach QP to multicast group %pI6\n",
+ mcast->mcmember.mgid.raw);
clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags);
return ret;
mcast->ah = ah;
spin_unlock_irq(&priv->lock);
- ipoib_dbg_mcast(priv, "MGID " IPOIB_GID_FMT
- " AV %p, LID 0x%04x, SL %d\n",
- IPOIB_GID_ARG(mcast->mcmember.mgid),
+ ipoib_dbg_mcast(priv, "MGID %pI6 AV %p, LID 0x%04x, SL %d\n",
+ mcast->mcmember.mgid.raw,
mcast->ah->ah,
be16_to_cpu(mcast->mcmember.mlid),
mcast->mcmember.sl);
}
/* actually send any queued packets */
- spin_lock_irq(&priv->tx_lock);
+ netif_tx_lock_bh(dev);
while (!skb_queue_empty(&mcast->pkt_queue)) {
struct sk_buff *skb = skb_dequeue(&mcast->pkt_queue);
- spin_unlock_irq(&priv->tx_lock);
+ netif_tx_unlock_bh(dev);
skb->dev = dev;
- if (!skb->dst || !skb->dst->neighbour) {
+ if (!skb_dst(skb) || !skb_dst(skb)->neighbour) {
/* put pseudoheader back on for next time */
skb_push(skb, sizeof (struct ipoib_pseudoheader));
}
if (dev_queue_xmit(skb))
ipoib_warn(priv, "dev_queue_xmit failed to requeue packet\n");
- spin_lock_irq(&priv->tx_lock);
+ netif_tx_lock_bh(dev);
}
- spin_unlock_irq(&priv->tx_lock);
+ netif_tx_unlock_bh(dev);
return 0;
}
{
struct ipoib_mcast *mcast = multicast->context;
struct net_device *dev = mcast->dev;
- struct ipoib_dev_priv *priv = netdev_priv(dev);
/* We trap for port events ourselves. */
if (status == -ENETRESET)
if (status) {
if (mcast->logcount++ < 20)
- ipoib_dbg_mcast(netdev_priv(dev), "multicast join failed for "
- IPOIB_GID_FMT ", status %d\n",
- IPOIB_GID_ARG(mcast->mcmember.mgid), status);
+ ipoib_dbg_mcast(netdev_priv(dev), "multicast join failed for %pI6, status %d\n",
+ mcast->mcmember.mgid.raw, status);
/* Flush out any queued packets */
- spin_lock_irq(&priv->tx_lock);
+ netif_tx_lock_bh(dev);
while (!skb_queue_empty(&mcast->pkt_queue)) {
- ++priv->stats.tx_dropped;
+ ++dev->stats.tx_dropped;
dev_kfree_skb_any(skb_dequeue(&mcast->pkt_queue));
}
- spin_unlock_irq(&priv->tx_lock);
+ netif_tx_unlock_bh(dev);
/* Clear the busy flag so we try again */
status = test_and_clear_bit(IPOIB_MCAST_FLAG_BUSY,
ipoib_warn(priv, "ib_sa_join_multicast failed (ret = %d)\n",
ret);
} else {
- ipoib_dbg_mcast(priv, "no multicast record for " IPOIB_GID_FMT
- ", starting join\n",
- IPOIB_GID_ARG(mcast->mcmember.mgid));
+ ipoib_dbg_mcast(priv, "no multicast record for %pI6, starting join\n",
+ mcast->mcmember.mgid.raw);
}
return ret;
}
+void ipoib_mcast_carrier_on_task(struct work_struct *work)
+{
+ struct ipoib_dev_priv *priv = container_of(work, struct ipoib_dev_priv,
+ carrier_on_task);
+ struct ib_port_attr attr;
+
+ /*
+ * Take rtnl_lock to avoid racing with ipoib_stop() and
+ * turning the carrier back on while a device is being
+ * removed.
+ */
+ if (ib_query_port(priv->ca, priv->port, &attr) ||
+ attr.state != IB_PORT_ACTIVE) {
+ ipoib_dbg(priv, "Keeping carrier off until IB port is active\n");
+ return;
+ }
+
+ rtnl_lock();
+ netif_carrier_on(priv->dev);
+ rtnl_unlock();
+}
+
static int ipoib_mcast_join_complete(int status,
struct ib_sa_multicast *multicast)
{
struct net_device *dev = mcast->dev;
struct ipoib_dev_priv *priv = netdev_priv(dev);
- ipoib_dbg_mcast(priv, "join completion for " IPOIB_GID_FMT
- " (status %d)\n",
- IPOIB_GID_ARG(mcast->mcmember.mgid), status);
+ ipoib_dbg_mcast(priv, "join completion for %pI6 (status %d)\n",
+ mcast->mcmember.mgid.raw, status);
/* We trap for port events ourselves. */
if (status == -ENETRESET)
&priv->mcast_task, 0);
mutex_unlock(&mcast_mutex);
+ /*
+ * Defer carrier on work to ipoib_workqueue to avoid a
+ * deadlock on rtnl_lock here.
+ */
if (mcast == priv->broadcast)
- netif_carrier_on(dev);
+ queue_work(ipoib_workqueue, &priv->carrier_on_task);
return 0;
}
if (mcast->logcount++ < 20) {
- if (status == -ETIMEDOUT) {
- ipoib_dbg_mcast(priv, "multicast join failed for " IPOIB_GID_FMT
- ", status %d\n",
- IPOIB_GID_ARG(mcast->mcmember.mgid),
- status);
+ if (status == -ETIMEDOUT || status == -EAGAIN) {
+ ipoib_dbg_mcast(priv, "multicast join failed for %pI6, status %d\n",
+ mcast->mcmember.mgid.raw, status);
} else {
- ipoib_warn(priv, "multicast join failed for "
- IPOIB_GID_FMT ", status %d\n",
- IPOIB_GID_ARG(mcast->mcmember.mgid),
- status);
+ ipoib_warn(priv, "multicast join failed for %pI6, status %d\n",
+ mcast->mcmember.mgid.raw, status);
}
}
ib_sa_comp_mask comp_mask;
int ret = 0;
- ipoib_dbg_mcast(priv, "joining MGID " IPOIB_GID_FMT "\n",
- IPOIB_GID_ARG(mcast->mcmember.mgid));
+ ipoib_dbg_mcast(priv, "joining MGID %pI6\n", mcast->mcmember.mgid.raw);
rec.mgid = mcast->mcmember.mgid;
rec.port_gid = priv->local_gid;
if (!priv->broadcast) {
struct ipoib_mcast *broadcast;
+ if (!test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags))
+ return;
+
broadcast = ipoib_mcast_alloc(dev, 1);
if (!broadcast) {
ipoib_warn(priv, "failed to allocate broadcast group\n");
return;
}
- priv->mcast_mtu = ib_mtu_enum_to_int(priv->broadcast->mcmember.mtu) -
- IPOIB_ENCAP_LEN;
+ priv->mcast_mtu = IPOIB_UD_MTU(ib_mtu_enum_to_int(priv->broadcast->mcmember.mtu));
- if (!ipoib_cm_admin_enabled(dev))
- dev->mtu = min(priv->mcast_mtu, priv->admin_mtu);
+ if (!ipoib_cm_admin_enabled(dev)) {
+ rtnl_lock();
+ dev_set_mtu(dev, min(priv->mcast_mtu, priv->admin_mtu));
+ rtnl_unlock();
+ }
ipoib_dbg_mcast(priv, "successfully joined all multicast groups\n");
queue_delayed_work(ipoib_workqueue, &priv->mcast_task, 0);
mutex_unlock(&mcast_mutex);
- spin_lock_irq(&priv->lock);
- set_bit(IPOIB_MCAST_STARTED, &priv->flags);
- spin_unlock_irq(&priv->lock);
-
return 0;
}
ipoib_dbg_mcast(priv, "stopping multicast thread\n");
- spin_lock_irq(&priv->lock);
- clear_bit(IPOIB_MCAST_STARTED, &priv->flags);
- spin_unlock_irq(&priv->lock);
-
mutex_lock(&mcast_mutex);
clear_bit(IPOIB_MCAST_RUN, &priv->flags);
cancel_delayed_work(&priv->mcast_task);
ib_sa_free_multicast(mcast->mc);
if (test_and_clear_bit(IPOIB_MCAST_FLAG_ATTACHED, &mcast->flags)) {
- ipoib_dbg_mcast(priv, "leaving MGID " IPOIB_GID_FMT "\n",
- IPOIB_GID_ARG(mcast->mcmember.mgid));
+ ipoib_dbg_mcast(priv, "leaving MGID %pI6\n",
+ mcast->mcmember.mgid.raw);
/* Remove ourselves from the multicast group */
- ret = ipoib_mcast_detach(dev, be16_to_cpu(mcast->mcmember.mlid),
- &mcast->mcmember.mgid);
+ ret = ib_detach_mcast(priv->qp, &mcast->mcmember.mgid,
+ be16_to_cpu(mcast->mcmember.mlid));
if (ret)
- ipoib_warn(priv, "ipoib_mcast_detach failed (result = %d)\n", ret);
+ ipoib_warn(priv, "ib_detach_mcast failed (result = %d)\n", ret);
}
return 0;
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_mcast *mcast;
+ unsigned long flags;
- /*
- * We can only be called from ipoib_start_xmit, so we're
- * inside tx_lock -- no need to save/restore flags.
- */
- spin_lock(&priv->lock);
+ spin_lock_irqsave(&priv->lock, flags);
- if (!test_bit(IPOIB_MCAST_STARTED, &priv->flags) ||
+ if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags) ||
!priv->broadcast ||
!test_bit(IPOIB_MCAST_FLAG_ATTACHED, &priv->broadcast->flags)) {
- ++priv->stats.tx_dropped;
+ ++dev->stats.tx_dropped;
dev_kfree_skb_any(skb);
goto unlock;
}
mcast = __ipoib_mcast_find(dev, mgid);
if (!mcast) {
/* Let's create a new send only group now */
- ipoib_dbg_mcast(priv, "setting up send only multicast group for "
- IPOIB_GID_FMT "\n", IPOIB_GID_RAW_ARG(mgid));
+ ipoib_dbg_mcast(priv, "setting up send only multicast group for %pI6\n",
+ mgid);
mcast = ipoib_mcast_alloc(dev, 0);
if (!mcast) {
ipoib_warn(priv, "unable to allocate memory for "
"multicast structure\n");
- ++priv->stats.tx_dropped;
+ ++dev->stats.tx_dropped;
dev_kfree_skb_any(skb);
goto out;
}
if (skb_queue_len(&mcast->pkt_queue) < IPOIB_MAX_MCAST_QUEUE)
skb_queue_tail(&mcast->pkt_queue, skb);
else {
- ++priv->stats.tx_dropped;
+ ++dev->stats.tx_dropped;
dev_kfree_skb_any(skb);
}
out:
if (mcast && mcast->ah) {
- if (skb->dst &&
- skb->dst->neighbour &&
- !*to_ipoib_neigh(skb->dst->neighbour)) {
- struct ipoib_neigh *neigh = ipoib_neigh_alloc(skb->dst->neighbour);
+ if (skb_dst(skb) &&
+ skb_dst(skb)->neighbour &&
+ !*to_ipoib_neigh(skb_dst(skb)->neighbour)) {
+ struct ipoib_neigh *neigh = ipoib_neigh_alloc(skb_dst(skb)->neighbour,
+ skb->dev);
if (neigh) {
kref_get(&mcast->ah->ref);
- neigh->ah = mcast->ah;
+ neigh->ah = mcast->ah;
list_add_tail(&neigh->list, &mcast->neigh_list);
}
}
+ spin_unlock_irqrestore(&priv->lock, flags);
ipoib_send(dev, skb, mcast->ah, IB_MULTICAST_QPN);
+ return;
}
unlock:
- spin_unlock(&priv->lock);
+ spin_unlock_irqrestore(&priv->lock, flags);
}
void ipoib_mcast_dev_flush(struct net_device *dev)
}
}
+static int ipoib_mcast_addr_is_valid(const u8 *addr, unsigned int addrlen,
+ const u8 *broadcast)
+{
+ if (addrlen != INFINIBAND_ALEN)
+ return 0;
+ /* reserved QPN, prefix, scope */
+ if (memcmp(addr, broadcast, 6))
+ return 0;
+ /* signature lower, pkey */
+ if (memcmp(addr + 7, broadcast + 7, 3))
+ return 0;
+ return 1;
+}
+
void ipoib_mcast_restart_task(struct work_struct *work)
{
struct ipoib_dev_priv *priv =
struct ipoib_mcast *mcast, *tmcast;
LIST_HEAD(remove_list);
unsigned long flags;
+ struct ib_sa_mcmember_rec rec;
ipoib_dbg_mcast(priv, "restarting multicast task\n");
ipoib_mcast_stop_thread(dev, 0);
local_irq_save(flags);
- netif_tx_lock(dev);
+ netif_addr_lock(dev);
spin_lock(&priv->lock);
/*
clear_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags);
/* Mark all of the entries that are found or don't exist */
- for (mclist = dev->mc_list; mclist; mclist = mclist->next) {
+ netdev_for_each_mc_addr(mclist, dev) {
union ib_gid mgid;
- memcpy(mgid.raw, mclist->dmi_addr + 4, sizeof mgid);
+ if (!ipoib_mcast_addr_is_valid(mclist->dmi_addr,
+ mclist->dmi_addrlen,
+ dev->broadcast))
+ continue;
- /* Add in the P_Key */
- mgid.raw[4] = (priv->pkey >> 8) & 0xff;
- mgid.raw[5] = priv->pkey & 0xff;
+ memcpy(mgid.raw, mclist->dmi_addr + 4, sizeof mgid);
mcast = __ipoib_mcast_find(dev, &mgid);
if (!mcast || test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) {
struct ipoib_mcast *nmcast;
+ /* ignore group which is directly joined by userspace */
+ if (test_bit(IPOIB_FLAG_UMCAST, &priv->flags) &&
+ !ib_sa_get_mcmember_rec(priv->ca, priv->port, &mgid, &rec)) {
+ ipoib_dbg_mcast(priv, "ignoring multicast entry for mgid %pI6\n",
+ mgid.raw);
+ continue;
+ }
+
/* Not found or send-only group, let's add a new entry */
- ipoib_dbg_mcast(priv, "adding multicast entry for mgid "
- IPOIB_GID_FMT "\n", IPOIB_GID_ARG(mgid));
+ ipoib_dbg_mcast(priv, "adding multicast entry for mgid %pI6\n",
+ mgid.raw);
nmcast = ipoib_mcast_alloc(dev, 0);
if (!nmcast) {
list_for_each_entry_safe(mcast, tmcast, &priv->multicast_list, list) {
if (!test_bit(IPOIB_MCAST_FLAG_FOUND, &mcast->flags) &&
!test_bit(IPOIB_MCAST_FLAG_SENDONLY, &mcast->flags)) {
- ipoib_dbg_mcast(priv, "deleting multicast group " IPOIB_GID_FMT "\n",
- IPOIB_GID_ARG(mcast->mcmember.mgid));
+ ipoib_dbg_mcast(priv, "deleting multicast group %pI6\n",
+ mcast->mcmember.mgid.raw);
rb_erase(&mcast->rb_node, &priv->multicast_tree);
}
spin_unlock(&priv->lock);
- netif_tx_unlock(dev);
+ netif_addr_unlock(dev);
local_irq_restore(flags);
/* We have to cancel outside of the spinlock */
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff