* 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_main.c 1377 2004-12-23 19:57:12Z roland $
*/
#include "ipoib.h"
#include <linux/init.h>
#include <linux/slab.h>
+#include <linux/kernel.h>
#include <linux/vmalloc.h>
#include <linux/if_arp.h> /* For ARPHRD_xxx */
#include <linux/ip.h>
#include <linux/in.h>
+#include <net/dst.h>
+
MODULE_AUTHOR("Roland Dreier");
MODULE_DESCRIPTION("IP-over-InfiniBand net driver");
MODULE_LICENSE("Dual BSD/GPL");
+int ipoib_sendq_size __read_mostly = IPOIB_TX_RING_SIZE;
+int ipoib_recvq_size __read_mostly = IPOIB_RX_RING_SIZE;
+
+module_param_named(send_queue_size, ipoib_sendq_size, int, 0444);
+MODULE_PARM_DESC(send_queue_size, "Number of descriptors in send queue");
+module_param_named(recv_queue_size, ipoib_recvq_size, int, 0444);
+MODULE_PARM_DESC(recv_queue_size, "Number of descriptors in receive queue");
+
+static int lro;
+module_param(lro, bool, 0444);
+MODULE_PARM_DESC(lro, "Enable LRO (Large Receive Offload)");
+
+static int lro_max_aggr = IPOIB_LRO_MAX_AGGR;
+module_param(lro_max_aggr, int, 0644);
+MODULE_PARM_DESC(lro_max_aggr, "LRO: Max packets to be aggregated "
+ "(default = 64)");
+
#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG
int ipoib_debug_level;
struct workqueue_struct *ipoib_workqueue;
+struct ib_sa_client ipoib_sa_client;
+
static void ipoib_add_one(struct ib_device *device);
static void ipoib_remove_one(struct ib_device *device);
return 0;
if (ipoib_ib_dev_open(dev))
- return -EINVAL;
+ goto err_disable;
if (ipoib_ib_dev_up(dev))
- return -EINVAL;
+ goto err_stop;
if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) {
struct ipoib_dev_priv *cpriv;
/* Bring up any child interfaces too */
- down(&priv->vlan_mutex);
+ mutex_lock(&priv->vlan_mutex);
list_for_each_entry(cpriv, &priv->child_intfs, list) {
int flags;
dev_change_flags(cpriv->dev, flags | IFF_UP);
}
- up(&priv->vlan_mutex);
+ mutex_unlock(&priv->vlan_mutex);
}
netif_start_queue(dev);
return 0;
+
+err_stop:
+ ipoib_ib_dev_stop(dev, 1);
+
+err_disable:
+ clear_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags);
+
+ return -EINVAL;
}
static int ipoib_stop(struct net_device *dev)
netif_stop_queue(dev);
- ipoib_ib_dev_down(dev);
- ipoib_ib_dev_stop(dev);
+ ipoib_ib_dev_down(dev, 0);
+ ipoib_ib_dev_stop(dev, 0);
if (!test_bit(IPOIB_FLAG_SUBINTERFACE, &priv->flags)) {
struct ipoib_dev_priv *cpriv;
/* Bring down any child interfaces too */
- down(&priv->vlan_mutex);
+ mutex_lock(&priv->vlan_mutex);
list_for_each_entry(cpriv, &priv->child_intfs, list) {
int flags;
dev_change_flags(cpriv->dev, flags & ~IFF_UP);
}
- up(&priv->vlan_mutex);
+ mutex_unlock(&priv->vlan_mutex);
}
return 0;
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
- if (new_mtu > IPOIB_PACKET_SIZE - IPOIB_ENCAP_LEN)
+ /* dev->mtu > 2K ==> connected mode */
+ if (ipoib_cm_admin_enabled(dev)) {
+ if (new_mtu > ipoib_cm_max_mtu(dev))
+ return -EINVAL;
+
+ if (new_mtu > priv->mcast_mtu)
+ ipoib_warn(priv, "mtu > %d will cause multicast packet drops.\n",
+ priv->mcast_mtu);
+
+ dev->mtu = new_mtu;
+ return 0;
+ }
+
+ if (new_mtu > IPOIB_UD_MTU(priv->max_ib_mtu))
return -EINVAL;
priv->admin_mtu = new_mtu;
return 0;
}
-static struct ipoib_path *__path_find(struct net_device *dev,
- union ib_gid *gid)
+static struct ipoib_path *__path_find(struct net_device *dev, void *gid)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct rb_node *n = priv->path_tree.rb_node;
while (n) {
path = rb_entry(n, struct ipoib_path, rb_node);
- ret = memcmp(gid->raw, path->pathrec.dgid.raw,
+ ret = memcmp(gid, path->pathrec.dgid.raw,
sizeof (union ib_gid));
if (ret < 0)
*/
if (neigh->ah)
ipoib_put_ah(neigh->ah);
- *to_ipoib_neigh(neigh->neighbour) = NULL;
- neigh->neighbour->ops->destructor = NULL;
- kfree(neigh);
+
+ ipoib_neigh_free(dev, neigh);
}
spin_unlock_irqrestore(&priv->lock, flags);
#endif /* CONFIG_INFINIBAND_IPOIB_DEBUG */
+void ipoib_mark_paths_invalid(struct net_device *dev)
+{
+ struct ipoib_dev_priv *priv = netdev_priv(dev);
+ struct ipoib_path *path, *tp;
+
+ spin_lock_irq(&priv->lock);
+
+ list_for_each_entry_safe(path, tp, &priv->path_list, list) {
+ ipoib_dbg(priv, "mark path LID 0x%04x GID %pI6 invalid\n",
+ be16_to_cpu(path->pathrec.dlid),
+ path->pathrec.dgid.raw);
+ path->valid = 0;
+ }
+
+ spin_unlock_irq(&priv->lock);
+}
+
void ipoib_flush_paths(struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
LIST_HEAD(remove_list);
unsigned long flags;
+ netif_tx_lock_bh(dev);
spin_lock_irqsave(&priv->lock, flags);
- list_splice(&priv->path_list, &remove_list);
- INIT_LIST_HEAD(&priv->path_list);
+ list_splice_init(&priv->path_list, &remove_list);
list_for_each_entry(path, &remove_list, list)
rb_erase(&path->rb_node, &priv->path_tree);
- spin_unlock_irqrestore(&priv->lock, flags);
-
list_for_each_entry_safe(path, tp, &remove_list, list) {
if (path->query)
ib_sa_cancel_query(path->query_id, path->query);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ netif_tx_unlock_bh(dev);
wait_for_completion(&path->done);
path_free(dev, path);
+ netif_tx_lock_bh(dev);
+ spin_lock_irqsave(&priv->lock, flags);
}
+
+ spin_unlock_irqrestore(&priv->lock, flags);
+ netif_tx_unlock_bh(dev);
}
static void path_rec_completion(int status,
struct net_device *dev = path->dev;
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_ah *ah = NULL;
- struct ipoib_neigh *neigh;
+ struct ipoib_ah *old_ah = NULL;
+ struct ipoib_neigh *neigh, *tn;
struct sk_buff_head skqueue;
struct sk_buff *skb;
unsigned long flags;
- if (pathrec)
- ipoib_dbg(priv, "PathRec LID 0x%04x for GID " IPOIB_GID_FMT "\n",
- be16_to_cpu(pathrec->dlid), IPOIB_GID_ARG(pathrec->dgid));
+ if (!status)
+ ipoib_dbg(priv, "PathRec LID 0x%04x for GID %pI6\n",
+ be16_to_cpu(pathrec->dlid), pathrec->dgid.raw);
else
- ipoib_dbg(priv, "PathRec status %d for GID " IPOIB_GID_FMT "\n",
- status, IPOIB_GID_ARG(path->pathrec.dgid));
+ ipoib_dbg(priv, "PathRec status %d for GID %pI6\n",
+ status, path->pathrec.dgid.raw);
skb_queue_head_init(&skqueue);
if (!status) {
- struct ib_ah_attr av = {
- .dlid = be16_to_cpu(pathrec->dlid),
- .sl = pathrec->sl,
- .port_num = priv->port
- };
- int path_rate = ib_sa_rate_enum_to_int(pathrec->rate);
-
- if (path_rate > 0 && priv->local_rate > path_rate)
- av.static_rate = (priv->local_rate - 1) / path_rate;
-
- ipoib_dbg(priv, "static_rate %d for local port %dX, path %dX\n",
- av.static_rate, priv->local_rate,
- ib_sa_rate_enum_to_int(pathrec->rate));
+ struct ib_ah_attr av;
- ah = ipoib_create_ah(dev, priv->pd, &av);
+ if (!ib_init_ah_from_path(priv->ca, priv->port, pathrec, &av))
+ ah = ipoib_create_ah(dev, priv->pd, &av);
}
spin_lock_irqsave(&priv->lock, flags);
- path->ah = ah;
-
if (ah) {
path->pathrec = *pathrec;
+ old_ah = path->ah;
+ path->ah = ah;
+
ipoib_dbg(priv, "created address handle %p for LID 0x%04x, SL %d\n",
ah, be16_to_cpu(pathrec->dlid), pathrec->sl);
while ((skb = __skb_dequeue(&path->queue)))
__skb_queue_tail(&skqueue, skb);
- list_for_each_entry(neigh, &path->neigh_list, list) {
+ list_for_each_entry_safe(neigh, tn, &path->neigh_list, list) {
+ if (neigh->ah) {
+ WARN_ON(neigh->ah != old_ah);
+ /*
+ * Dropping the ah reference inside
+ * priv->lock is safe here, because we
+ * will hold one more reference from
+ * the original value of path->ah (ie
+ * old_ah).
+ */
+ ipoib_put_ah(neigh->ah);
+ }
kref_get(&path->ah->ref);
neigh->ah = path->ah;
+ memcpy(&neigh->dgid.raw, &path->pathrec.dgid.raw,
+ sizeof(union ib_gid));
+
+ if (ipoib_cm_enabled(dev, neigh->neighbour)) {
+ if (!ipoib_cm_get(neigh))
+ ipoib_cm_set(neigh, ipoib_cm_create_tx(dev,
+ path,
+ neigh));
+ if (!ipoib_cm_get(neigh)) {
+ list_del(&neigh->list);
+ if (neigh->ah)
+ ipoib_put_ah(neigh->ah);
+ ipoib_neigh_free(dev, neigh);
+ continue;
+ }
+ }
while ((skb = __skb_dequeue(&neigh->queue)))
__skb_queue_tail(&skqueue, skb);
}
- } else
- path->query = NULL;
+ path->valid = 1;
+ }
+ path->query = NULL;
complete(&path->done);
spin_unlock_irqrestore(&priv->lock, flags);
+ if (old_ah)
+ ipoib_put_ah(old_ah);
+
while ((skb = __skb_dequeue(&skqueue))) {
skb->dev = dev;
if (dev_queue_xmit(skb))
}
}
-static struct ipoib_path *path_rec_create(struct net_device *dev,
- union ib_gid *gid)
+static struct ipoib_path *path_rec_create(struct net_device *dev, void *gid)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_path *path;
+ if (!priv->broadcast)
+ return NULL;
+
path = kzalloc(sizeof *path, GFP_ATOMIC);
if (!path)
return NULL;
INIT_LIST_HEAD(&path->neigh_list);
- memcpy(path->pathrec.dgid.raw, gid->raw, sizeof (union ib_gid));
- path->pathrec.sgid = priv->local_gid;
- path->pathrec.pkey = cpu_to_be16(priv->pkey);
- path->pathrec.numb_path = 1;
+ memcpy(path->pathrec.dgid.raw, gid, sizeof (union ib_gid));
+ path->pathrec.sgid = priv->local_gid;
+ path->pathrec.pkey = cpu_to_be16(priv->pkey);
+ path->pathrec.numb_path = 1;
+ path->pathrec.traffic_class = priv->broadcast->mcmember.traffic_class;
return path;
}
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
- ipoib_dbg(priv, "Start path record lookup for " IPOIB_GID_FMT "\n",
- IPOIB_GID_ARG(path->pathrec.dgid));
+ ipoib_dbg(priv, "Start path record lookup for %pI6\n",
+ path->pathrec.dgid.raw);
init_completion(&path->done);
path->query_id =
- ib_sa_path_rec_get(priv->ca, priv->port,
+ ib_sa_path_rec_get(&ipoib_sa_client, priv->ca, priv->port,
&path->pathrec,
IB_SA_PATH_REC_DGID |
IB_SA_PATH_REC_SGID |
IB_SA_PATH_REC_NUMB_PATH |
+ IB_SA_PATH_REC_TRAFFIC_CLASS |
IB_SA_PATH_REC_PKEY,
1000, GFP_ATOMIC,
path_rec_completion,
path, &path->query);
if (path->query_id < 0) {
- ipoib_warn(priv, "ib_sa_path_rec_get failed\n");
+ ipoib_warn(priv, "ib_sa_path_rec_get failed: %d\n", path->query_id);
path->query = NULL;
+ complete(&path->done);
return path->query_id;
}
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_path *path;
struct ipoib_neigh *neigh;
+ unsigned long flags;
- neigh = kmalloc(sizeof *neigh, GFP_ATOMIC);
+ neigh = ipoib_neigh_alloc(skb_dst(skb)->neighbour, skb->dev);
if (!neigh) {
- ++priv->stats.tx_dropped;
+ ++dev->stats.tx_dropped;
dev_kfree_skb_any(skb);
return;
}
- skb_queue_head_init(&neigh->queue);
- neigh->neighbour = skb->dst->neighbour;
- *to_ipoib_neigh(skb->dst->neighbour) = neigh;
-
- /*
- * 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);
- path = __path_find(dev, (union ib_gid *) (skb->dst->neighbour->ha + 4));
+ path = __path_find(dev, skb_dst(skb)->neighbour->ha + 4);
if (!path) {
- path = path_rec_create(dev,
- (union ib_gid *) (skb->dst->neighbour->ha + 4));
+ path = path_rec_create(dev, skb_dst(skb)->neighbour->ha + 4);
if (!path)
- goto err;
+ goto err_path;
__path_add(dev, path);
}
list_add_tail(&neigh->list, &path->neigh_list);
- if (path->pathrec.dlid) {
+ if (path->ah) {
kref_get(&path->ah->ref);
neigh->ah = path->ah;
-
- ipoib_send(dev, skb, path->ah,
- be32_to_cpup((__be32 *) skb->dst->neighbour->ha));
+ memcpy(&neigh->dgid.raw, &path->pathrec.dgid.raw,
+ sizeof(union ib_gid));
+
+ if (ipoib_cm_enabled(dev, neigh->neighbour)) {
+ if (!ipoib_cm_get(neigh))
+ ipoib_cm_set(neigh, ipoib_cm_create_tx(dev, path, neigh));
+ if (!ipoib_cm_get(neigh)) {
+ list_del(&neigh->list);
+ if (neigh->ah)
+ ipoib_put_ah(neigh->ah);
+ ipoib_neigh_free(dev, neigh);
+ goto err_drop;
+ }
+ if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE)
+ __skb_queue_tail(&neigh->queue, skb);
+ else {
+ ipoib_warn(priv, "queue length limit %d. Packet drop.\n",
+ skb_queue_len(&neigh->queue));
+ goto err_drop;
+ }
+ } else
+ ipoib_send(dev, skb, path->ah, IPOIB_QPN(skb_dst(skb)->neighbour->ha));
} else {
neigh->ah = NULL;
- if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) {
- __skb_queue_tail(&neigh->queue, skb);
- } else {
- ++priv->stats.tx_dropped;
- dev_kfree_skb_any(skb);
- }
if (!path->query && path_rec_start(dev, path))
- goto err;
+ goto err_list;
+
+ __skb_queue_tail(&neigh->queue, skb);
}
- spin_unlock(&priv->lock);
+ spin_unlock_irqrestore(&priv->lock, flags);
return;
-err:
- *to_ipoib_neigh(skb->dst->neighbour) = NULL;
+err_list:
list_del(&neigh->list);
- neigh->neighbour->ops->destructor = NULL;
- kfree(neigh);
- ++priv->stats.tx_dropped;
+err_path:
+ ipoib_neigh_free(dev, neigh);
+err_drop:
+ ++dev->stats.tx_dropped;
dev_kfree_skb_any(skb);
- spin_unlock(&priv->lock);
+ spin_unlock_irqrestore(&priv->lock, flags);
}
static void ipoib_path_lookup(struct sk_buff *skb, struct net_device *dev)
struct ipoib_dev_priv *priv = netdev_priv(skb->dev);
/* Look up path record for unicasts */
- if (skb->dst->neighbour->ha[4] != 0xff) {
+ if (skb_dst(skb)->neighbour->ha[4] != 0xff) {
neigh_add_path(skb, dev);
return;
}
/* Add in the P_Key for multicasts */
- skb->dst->neighbour->ha[8] = (priv->pkey >> 8) & 0xff;
- skb->dst->neighbour->ha[9] = priv->pkey & 0xff;
- ipoib_mcast_send(dev, (union ib_gid *) (skb->dst->neighbour->ha + 4), skb);
+ skb_dst(skb)->neighbour->ha[8] = (priv->pkey >> 8) & 0xff;
+ skb_dst(skb)->neighbour->ha[9] = priv->pkey & 0xff;
+ ipoib_mcast_send(dev, skb_dst(skb)->neighbour->ha + 4, skb);
}
static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev,
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_path *path;
+ 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);
- path = __path_find(dev, (union ib_gid *) (phdr->hwaddr + 4));
- if (!path) {
- path = path_rec_create(dev,
- (union ib_gid *) (phdr->hwaddr + 4));
+ path = __path_find(dev, phdr->hwaddr + 4);
+ if (!path || !path->valid) {
+ int new_path = 0;
+
+ if (!path) {
+ path = path_rec_create(dev, phdr->hwaddr + 4);
+ new_path = 1;
+ }
if (path) {
/* put pseudoheader back on for next time */
skb_push(skb, sizeof *phdr);
__skb_queue_tail(&path->queue, skb);
- if (path_rec_start(dev, path)) {
- spin_unlock(&priv->lock);
- path_free(dev, path);
+ if (!path->query && path_rec_start(dev, path)) {
+ spin_unlock_irqrestore(&priv->lock, flags);
+ if (new_path)
+ path_free(dev, path);
return;
} else
__path_add(dev, path);
} else {
- ++priv->stats.tx_dropped;
+ ++dev->stats.tx_dropped;
dev_kfree_skb_any(skb);
}
- spin_unlock(&priv->lock);
+ spin_unlock_irqrestore(&priv->lock, flags);
return;
}
- if (path->pathrec.dlid) {
+ if (path->ah) {
ipoib_dbg(priv, "Send unicast ARP to %04x\n",
be16_to_cpu(path->pathrec.dlid));
- ipoib_send(dev, skb, path->ah,
- be32_to_cpup((__be32 *) phdr->hwaddr));
+ ipoib_send(dev, skb, path->ah, IPOIB_QPN(phdr->hwaddr));
} else if ((path->query || !path_rec_start(dev, path)) &&
skb_queue_len(&path->queue) < IPOIB_MAX_PATH_REC_QUEUE) {
/* put pseudoheader back on for next time */
skb_push(skb, sizeof *phdr);
__skb_queue_tail(&path->queue, skb);
} else {
- ++priv->stats.tx_dropped;
+ ++dev->stats.tx_dropped;
dev_kfree_skb_any(skb);
}
- spin_unlock(&priv->lock);
+ spin_unlock_irqrestore(&priv->lock, flags);
}
static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
struct ipoib_neigh *neigh;
unsigned long flags;
- if (!spin_trylock_irqsave(&priv->tx_lock, flags))
- return NETDEV_TX_LOCKED;
-
- /*
- * Check if our queue is stopped. Since we have the LLTX bit
- * set, we can't rely on netif_stop_queue() preventing our
- * xmit function from being called with a full queue.
- */
- if (unlikely(netif_queue_stopped(dev))) {
- spin_unlock_irqrestore(&priv->tx_lock, flags);
- return NETDEV_TX_BUSY;
- }
-
- if (skb->dst && skb->dst->neighbour) {
- if (unlikely(!*to_ipoib_neigh(skb->dst->neighbour))) {
+ if (likely(skb_dst(skb) && skb_dst(skb)->neighbour)) {
+ if (unlikely(!*to_ipoib_neigh(skb_dst(skb)->neighbour))) {
ipoib_path_lookup(skb, dev);
- goto out;
+ return NETDEV_TX_OK;
}
- neigh = *to_ipoib_neigh(skb->dst->neighbour);
+ neigh = *to_ipoib_neigh(skb_dst(skb)->neighbour);
+
+ if (unlikely((memcmp(&neigh->dgid.raw,
+ skb_dst(skb)->neighbour->ha + 4,
+ sizeof(union ib_gid))) ||
+ (neigh->dev != dev))) {
+ spin_lock_irqsave(&priv->lock, flags);
+ /*
+ * It's safe to call ipoib_put_ah() inside
+ * priv->lock here, because we know that
+ * path->ah will always hold one more reference,
+ * so ipoib_put_ah() will never do more than
+ * decrement the ref count.
+ */
+ if (neigh->ah)
+ ipoib_put_ah(neigh->ah);
+ list_del(&neigh->list);
+ ipoib_neigh_free(dev, neigh);
+ spin_unlock_irqrestore(&priv->lock, flags);
+ ipoib_path_lookup(skb, dev);
+ return NETDEV_TX_OK;
+ }
- if (likely(neigh->ah)) {
- ipoib_send(dev, skb, neigh->ah,
- be32_to_cpup((__be32 *) skb->dst->neighbour->ha));
- goto out;
+ if (ipoib_cm_get(neigh)) {
+ if (ipoib_cm_up(neigh)) {
+ ipoib_cm_send(dev, skb, ipoib_cm_get(neigh));
+ return NETDEV_TX_OK;
+ }
+ } else if (neigh->ah) {
+ ipoib_send(dev, skb, neigh->ah, IPOIB_QPN(skb_dst(skb)->neighbour->ha));
+ return NETDEV_TX_OK;
}
if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) {
- spin_lock(&priv->lock);
+ spin_lock_irqsave(&priv->lock, flags);
__skb_queue_tail(&neigh->queue, skb);
- spin_unlock(&priv->lock);
+ spin_unlock_irqrestore(&priv->lock, flags);
} else {
- ++priv->stats.tx_dropped;
+ ++dev->stats.tx_dropped;
dev_kfree_skb_any(skb);
}
} else {
phdr->hwaddr[8] = (priv->pkey >> 8) & 0xff;
phdr->hwaddr[9] = priv->pkey & 0xff;
- ipoib_mcast_send(dev, (union ib_gid *) (phdr->hwaddr + 4), skb);
+ ipoib_mcast_send(dev, phdr->hwaddr + 4, skb);
} else {
/* unicast GID -- should be ARP or RARP reply */
if ((be16_to_cpup((__be16 *) skb->data) != ETH_P_ARP) &&
(be16_to_cpup((__be16 *) skb->data) != ETH_P_RARP)) {
- ipoib_warn(priv, "Unicast, no %s: type %04x, QPN %06x "
- IPOIB_GID_FMT "\n",
- skb->dst ? "neigh" : "dst",
+ ipoib_warn(priv, "Unicast, no %s: type %04x, QPN %06x %pI6\n",
+ skb_dst(skb) ? "neigh" : "dst",
be16_to_cpup((__be16 *) skb->data),
- be32_to_cpup((__be32 *) phdr->hwaddr),
- IPOIB_GID_ARG(*(union ib_gid *) (phdr->hwaddr + 4)));
+ IPOIB_QPN(phdr->hwaddr),
+ phdr->hwaddr + 4);
dev_kfree_skb_any(skb);
- ++priv->stats.tx_dropped;
- goto out;
+ ++dev->stats.tx_dropped;
+ return NETDEV_TX_OK;
}
unicast_arp_send(skb, dev, phdr);
}
}
-out:
- spin_unlock_irqrestore(&priv->tx_lock, flags);
-
return NETDEV_TX_OK;
}
-static struct net_device_stats *ipoib_get_stats(struct net_device *dev)
-{
- struct ipoib_dev_priv *priv = netdev_priv(dev);
-
- return &priv->stats;
-}
-
static void ipoib_timeout(struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
static int ipoib_hard_header(struct sk_buff *skb,
struct net_device *dev,
unsigned short type,
- void *daddr, void *saddr, unsigned len)
+ const void *daddr, const void *saddr, unsigned len)
{
struct ipoib_header *header;
* destination address onto the front of the skb so we can
* figure out where to send the packet later.
*/
- if (!skb->dst || !skb->dst->neighbour) {
+ if ((!skb_dst(skb) || !skb_dst(skb)->neighbour) && daddr) {
struct ipoib_pseudoheader *phdr =
(struct ipoib_pseudoheader *) skb_push(skb, sizeof *phdr);
memcpy(phdr->hwaddr, daddr, INFINIBAND_ALEN);
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
+ if (!test_bit(IPOIB_FLAG_OPER_UP, &priv->flags)) {
+ ipoib_dbg(priv, "IPOIB_FLAG_OPER_UP not set");
+ return;
+ }
+
queue_work(ipoib_workqueue, &priv->restart_task);
}
-static void ipoib_neigh_destructor(struct neighbour *n)
+static void ipoib_neigh_cleanup(struct neighbour *n)
{
struct ipoib_neigh *neigh;
struct ipoib_dev_priv *priv = netdev_priv(n->dev);
unsigned long flags;
struct ipoib_ah *ah = NULL;
+ neigh = *to_ipoib_neigh(n);
+ if (neigh)
+ priv = netdev_priv(neigh->dev);
+ else
+ return;
ipoib_dbg(priv,
- "neigh_destructor for %06x " IPOIB_GID_FMT "\n",
- be32_to_cpup((__be32 *) n->ha),
- IPOIB_GID_ARG(*((union ib_gid *) (n->ha + 4))));
+ "neigh_cleanup for %06x %pI6\n",
+ IPOIB_QPN(n->ha),
+ n->ha + 4);
spin_lock_irqsave(&priv->lock, flags);
- neigh = *to_ipoib_neigh(n);
- if (neigh) {
- if (neigh->ah)
- ah = neigh->ah;
- list_del(&neigh->list);
- *to_ipoib_neigh(n) = NULL;
- kfree(neigh);
- }
+ if (neigh->ah)
+ ah = neigh->ah;
+ list_del(&neigh->list);
+ ipoib_neigh_free(n->dev, neigh);
spin_unlock_irqrestore(&priv->lock, flags);
ipoib_put_ah(ah);
}
-static int ipoib_neigh_setup(struct neighbour *neigh)
+struct ipoib_neigh *ipoib_neigh_alloc(struct neighbour *neighbour,
+ struct net_device *dev)
{
- /*
- * Is this kosher? I can't find anybody in the kernel that
- * sets neigh->destructor, so we should be able to set it here
- * without trouble.
- */
- neigh->ops->destructor = ipoib_neigh_destructor;
+ struct ipoib_neigh *neigh;
- return 0;
+ neigh = kmalloc(sizeof *neigh, GFP_ATOMIC);
+ if (!neigh)
+ return NULL;
+
+ neigh->neighbour = neighbour;
+ neigh->dev = dev;
+ *to_ipoib_neigh(neighbour) = neigh;
+ skb_queue_head_init(&neigh->queue);
+ ipoib_cm_set(neigh, NULL);
+
+ return neigh;
+}
+
+void ipoib_neigh_free(struct net_device *dev, struct ipoib_neigh *neigh)
+{
+ struct sk_buff *skb;
+ *to_ipoib_neigh(neigh->neighbour) = NULL;
+ while ((skb = __skb_dequeue(&neigh->queue))) {
+ ++dev->stats.tx_dropped;
+ dev_kfree_skb_any(skb);
+ }
+ if (ipoib_cm_get(neigh))
+ ipoib_cm_destroy_tx(ipoib_cm_get(neigh));
+ kfree(neigh);
}
static int ipoib_neigh_setup_dev(struct net_device *dev, struct neigh_parms *parms)
{
- parms->neigh_setup = ipoib_neigh_setup;
+ parms->neigh_cleanup = ipoib_neigh_cleanup;
return 0;
}
struct ipoib_dev_priv *priv = netdev_priv(dev);
/* Allocate RX/TX "rings" to hold queued skbs */
-
- priv->rx_ring = kzalloc(IPOIB_RX_RING_SIZE * sizeof (struct ipoib_rx_buf),
+ priv->rx_ring = kzalloc(ipoib_recvq_size * sizeof *priv->rx_ring,
GFP_KERNEL);
if (!priv->rx_ring) {
printk(KERN_WARNING "%s: failed to allocate RX ring (%d entries)\n",
- ca->name, IPOIB_RX_RING_SIZE);
+ ca->name, ipoib_recvq_size);
goto out;
}
- priv->tx_ring = kzalloc(IPOIB_TX_RING_SIZE * sizeof (struct ipoib_tx_buf),
- GFP_KERNEL);
+ priv->tx_ring = vmalloc(ipoib_sendq_size * sizeof *priv->tx_ring);
if (!priv->tx_ring) {
printk(KERN_WARNING "%s: failed to allocate TX ring (%d entries)\n",
- ca->name, IPOIB_TX_RING_SIZE);
+ ca->name, ipoib_sendq_size);
goto out_rx_ring_cleanup;
}
+ memset(priv->tx_ring, 0, ipoib_sendq_size * sizeof *priv->tx_ring);
- /* priv->tx_head & tx_tail are already 0 */
+ /* priv->tx_head, tx_tail & tx_outstanding are already 0 */
if (ipoib_ib_dev_init(dev, ca, port))
goto out_tx_ring_cleanup;
return 0;
out_tx_ring_cleanup:
- kfree(priv->tx_ring);
+ vfree(priv->tx_ring);
out_rx_ring_cleanup:
kfree(priv->rx_ring);
ipoib_ib_dev_cleanup(dev);
kfree(priv->rx_ring);
- kfree(priv->tx_ring);
+ vfree(priv->tx_ring);
priv->rx_ring = NULL;
priv->tx_ring = NULL;
}
+static const struct header_ops ipoib_header_ops = {
+ .create = ipoib_hard_header,
+};
+
+static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
+ void **tcph, u64 *hdr_flags, void *priv)
+{
+ unsigned int ip_len;
+ struct iphdr *iph;
+
+ if (unlikely(skb->protocol != htons(ETH_P_IP)))
+ return -1;
+
+ /*
+ * In the future we may add an else clause that verifies the
+ * checksum and allows devices which do not calculate checksum
+ * to use LRO.
+ */
+ if (unlikely(skb->ip_summed != CHECKSUM_UNNECESSARY))
+ return -1;
+
+ /* Check for non-TCP packet */
+ skb_reset_network_header(skb);
+ iph = ip_hdr(skb);
+ if (iph->protocol != IPPROTO_TCP)
+ return -1;
+
+ ip_len = ip_hdrlen(skb);
+ skb_set_transport_header(skb, ip_len);
+ *tcph = tcp_hdr(skb);
+
+ /* check if IP header and TCP header are complete */
+ if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
+ return -1;
+
+ *hdr_flags = LRO_IPV4 | LRO_TCP;
+ *iphdr = iph;
+
+ return 0;
+}
+
+static void ipoib_lro_setup(struct ipoib_dev_priv *priv)
+{
+ priv->lro.lro_mgr.max_aggr = lro_max_aggr;
+ priv->lro.lro_mgr.max_desc = IPOIB_MAX_LRO_DESCRIPTORS;
+ priv->lro.lro_mgr.lro_arr = priv->lro.lro_desc;
+ priv->lro.lro_mgr.get_skb_header = get_skb_hdr;
+ priv->lro.lro_mgr.features = LRO_F_NAPI;
+ priv->lro.lro_mgr.dev = priv->dev;
+ priv->lro.lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
+}
+
+static const struct net_device_ops ipoib_netdev_ops = {
+ .ndo_open = ipoib_open,
+ .ndo_stop = ipoib_stop,
+ .ndo_change_mtu = ipoib_change_mtu,
+ .ndo_start_xmit = ipoib_start_xmit,
+ .ndo_tx_timeout = ipoib_timeout,
+ .ndo_set_multicast_list = ipoib_set_mcast_list,
+ .ndo_neigh_setup = ipoib_neigh_setup_dev,
+};
+
static void ipoib_setup(struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
- dev->open = ipoib_open;
- dev->stop = ipoib_stop;
- dev->change_mtu = ipoib_change_mtu;
- dev->hard_start_xmit = ipoib_start_xmit;
- dev->get_stats = ipoib_get_stats;
- dev->tx_timeout = ipoib_timeout;
- dev->hard_header = ipoib_hard_header;
- dev->set_multicast_list = ipoib_set_mcast_list;
- dev->neigh_setup = ipoib_neigh_setup_dev;
+ dev->netdev_ops = &ipoib_netdev_ops;
+ dev->header_ops = &ipoib_header_ops;
+
+ ipoib_set_ethtool_ops(dev);
- dev->watchdog_timeo = HZ;
+ netif_napi_add(dev, &priv->napi, ipoib_poll, 100);
- dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
+ dev->watchdog_timeo = HZ;
+
+ dev->flags |= IFF_BROADCAST | IFF_MULTICAST;
/*
* We add in INFINIBAND_ALEN to allow for the destination
* address "pseudoheader" for skbs without neighbour struct.
*/
- dev->hard_header_len = IPOIB_ENCAP_LEN + INFINIBAND_ALEN;
- dev->addr_len = INFINIBAND_ALEN;
- dev->type = ARPHRD_INFINIBAND;
- dev->tx_queue_len = IPOIB_TX_RING_SIZE * 2;
- dev->features = NETIF_F_VLAN_CHALLENGED | NETIF_F_LLTX;
-
- /* MTU will be reset when mcast join happens */
- dev->mtu = IPOIB_PACKET_SIZE - IPOIB_ENCAP_LEN;
- priv->mcast_mtu = priv->admin_mtu = dev->mtu;
+ dev->hard_header_len = IPOIB_ENCAP_LEN + INFINIBAND_ALEN;
+ dev->addr_len = INFINIBAND_ALEN;
+ dev->type = ARPHRD_INFINIBAND;
+ dev->tx_queue_len = ipoib_sendq_size * 2;
+ dev->features = (NETIF_F_VLAN_CHALLENGED |
+ NETIF_F_HIGHDMA);
+ dev->priv_flags &= ~IFF_XMIT_DST_RELEASE;
memcpy(dev->broadcast, ipv4_bcast_addr, INFINIBAND_ALEN);
netif_carrier_off(dev);
- SET_MODULE_OWNER(dev);
-
priv->dev = dev;
+ ipoib_lro_setup(priv);
+
spin_lock_init(&priv->lock);
- spin_lock_init(&priv->tx_lock);
- init_MUTEX(&priv->mcast_mutex);
- init_MUTEX(&priv->vlan_mutex);
+ mutex_init(&priv->vlan_mutex);
INIT_LIST_HEAD(&priv->path_list);
INIT_LIST_HEAD(&priv->child_intfs);
INIT_LIST_HEAD(&priv->dead_ahs);
INIT_LIST_HEAD(&priv->multicast_list);
- INIT_WORK(&priv->pkey_task, ipoib_pkey_poll, priv->dev);
- INIT_WORK(&priv->mcast_task, ipoib_mcast_join_task, priv->dev);
- INIT_WORK(&priv->flush_task, ipoib_ib_dev_flush, priv->dev);
- INIT_WORK(&priv->restart_task, ipoib_mcast_restart_task, priv->dev);
- INIT_WORK(&priv->ah_reap_task, ipoib_reap_ah, priv->dev);
+ INIT_DELAYED_WORK(&priv->pkey_poll_task, ipoib_pkey_poll);
+ INIT_DELAYED_WORK(&priv->mcast_task, ipoib_mcast_join_task);
+ INIT_WORK(&priv->carrier_on_task, ipoib_mcast_carrier_on_task);
+ INIT_WORK(&priv->flush_light, ipoib_ib_dev_flush_light);
+ INIT_WORK(&priv->flush_normal, ipoib_ib_dev_flush_normal);
+ INIT_WORK(&priv->flush_heavy, ipoib_ib_dev_flush_heavy);
+ INIT_WORK(&priv->restart_task, ipoib_mcast_restart_task);
+ INIT_DELAYED_WORK(&priv->ah_reap_task, ipoib_reap_ah);
}
struct ipoib_dev_priv *ipoib_intf_alloc(const char *name)
return netdev_priv(dev);
}
-static ssize_t show_pkey(struct class_device *cdev, char *buf)
+static ssize_t show_pkey(struct device *dev,
+ struct device_attribute *attr, char *buf)
{
- struct ipoib_dev_priv *priv =
- netdev_priv(container_of(cdev, struct net_device, class_dev));
+ struct ipoib_dev_priv *priv = netdev_priv(to_net_dev(dev));
return sprintf(buf, "0x%04x\n", priv->pkey);
}
-static CLASS_DEVICE_ATTR(pkey, S_IRUGO, show_pkey, NULL);
+static DEVICE_ATTR(pkey, S_IRUGO, show_pkey, NULL);
+
+static ssize_t show_umcast(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ipoib_dev_priv *priv = netdev_priv(to_net_dev(dev));
+
+ return sprintf(buf, "%d\n", test_bit(IPOIB_FLAG_UMCAST, &priv->flags));
+}
-static ssize_t create_child(struct class_device *cdev,
+static ssize_t set_umcast(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ipoib_dev_priv *priv = netdev_priv(to_net_dev(dev));
+ unsigned long umcast_val = simple_strtoul(buf, NULL, 0);
+
+ if (umcast_val > 0) {
+ set_bit(IPOIB_FLAG_UMCAST, &priv->flags);
+ ipoib_warn(priv, "ignoring multicast groups joined directly "
+ "by userspace\n");
+ } else
+ clear_bit(IPOIB_FLAG_UMCAST, &priv->flags);
+
+ return count;
+}
+static DEVICE_ATTR(umcast, S_IWUSR | S_IRUGO, show_umcast, set_umcast);
+
+int ipoib_add_umcast_attr(struct net_device *dev)
+{
+ return device_create_file(&dev->dev, &dev_attr_umcast);
+}
+
+static ssize_t create_child(struct device *dev,
+ struct device_attribute *attr,
const char *buf, size_t count)
{
int pkey;
*/
pkey |= 0x8000;
- ret = ipoib_vlan_add(container_of(cdev, struct net_device, class_dev),
- pkey);
+ ret = ipoib_vlan_add(to_net_dev(dev), pkey);
return ret ? ret : count;
}
-static CLASS_DEVICE_ATTR(create_child, S_IWUGO, NULL, create_child);
+static DEVICE_ATTR(create_child, S_IWUGO, NULL, create_child);
-static ssize_t delete_child(struct class_device *cdev,
+static ssize_t delete_child(struct device *dev,
+ struct device_attribute *attr,
const char *buf, size_t count)
{
int pkey;
if (pkey < 0 || pkey > 0xffff)
return -EINVAL;
- ret = ipoib_vlan_delete(container_of(cdev, struct net_device, class_dev),
- pkey);
+ ret = ipoib_vlan_delete(to_net_dev(dev), pkey);
return ret ? ret : count;
}
-static CLASS_DEVICE_ATTR(delete_child, S_IWUGO, NULL, delete_child);
+static DEVICE_ATTR(delete_child, S_IWUGO, NULL, delete_child);
int ipoib_add_pkey_attr(struct net_device *dev)
{
- return class_device_create_file(&dev->class_dev,
- &class_device_attr_pkey);
+ return device_create_file(&dev->dev, &dev_attr_pkey);
}
+int ipoib_set_dev_features(struct ipoib_dev_priv *priv, struct ib_device *hca)
+{
+ struct ib_device_attr *device_attr;
+ int result = -ENOMEM;
+
+ device_attr = kmalloc(sizeof *device_attr, GFP_KERNEL);
+ if (!device_attr) {
+ printk(KERN_WARNING "%s: allocation of %zu bytes failed\n",
+ hca->name, sizeof *device_attr);
+ return result;
+ }
+
+ result = ib_query_device(hca, device_attr);
+ if (result) {
+ printk(KERN_WARNING "%s: ib_query_device failed (ret = %d)\n",
+ hca->name, result);
+ kfree(device_attr);
+ return result;
+ }
+ priv->hca_caps = device_attr->device_cap_flags;
+
+ kfree(device_attr);
+
+ if (priv->hca_caps & IB_DEVICE_UD_IP_CSUM) {
+ set_bit(IPOIB_FLAG_CSUM, &priv->flags);
+ priv->dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
+ }
+
+ if (lro)
+ priv->dev->features |= NETIF_F_LRO;
+
+ if (priv->dev->features & NETIF_F_SG && priv->hca_caps & IB_DEVICE_UD_TSO)
+ priv->dev->features |= NETIF_F_TSO;
+
+ return 0;
+}
+
+
static struct net_device *ipoib_add_port(const char *format,
struct ib_device *hca, u8 port)
{
struct ipoib_dev_priv *priv;
+ struct ib_port_attr attr;
int result = -ENOMEM;
priv = ipoib_intf_alloc(format);
SET_NETDEV_DEV(priv->dev, hca->dma_device);
+ if (!ib_query_port(hca, port, &attr))
+ priv->max_ib_mtu = ib_mtu_enum_to_int(attr.max_mtu);
+ else {
+ printk(KERN_WARNING "%s: ib_query_port %d failed\n",
+ hca->name, port);
+ goto device_init_failed;
+ }
+
+ /* MTU will be reset when mcast join happens */
+ priv->dev->mtu = IPOIB_UD_MTU(priv->max_ib_mtu);
+ priv->mcast_mtu = priv->admin_mtu = priv->dev->mtu;
+
result = ib_query_pkey(hca, port, 0, &priv->pkey);
if (result) {
printk(KERN_WARNING "%s: ib_query_pkey port %d failed (ret = %d)\n",
hca->name, port, result);
- goto alloc_mem_failed;
+ goto device_init_failed;
}
+ if (ipoib_set_dev_features(priv, hca))
+ goto device_init_failed;
+
/*
* Set the full membership bit, so that we join the right
* broadcast group, etc.
if (result) {
printk(KERN_WARNING "%s: ib_query_gid port %d failed (ret = %d)\n",
hca->name, port, result);
- goto alloc_mem_failed;
+ goto device_init_failed;
} else
memcpy(priv->dev->dev_addr + 4, priv->local_gid.raw, sizeof (union ib_gid));
-
result = ipoib_dev_init(priv->dev, hca, port);
if (result < 0) {
printk(KERN_WARNING "%s: failed to initialize port %d (ret = %d)\n",
ipoib_create_debug_files(priv->dev);
+ if (ipoib_cm_add_mode_attr(priv->dev))
+ goto sysfs_failed;
if (ipoib_add_pkey_attr(priv->dev))
goto sysfs_failed;
- if (class_device_create_file(&priv->dev->class_dev,
- &class_device_attr_create_child))
+ if (ipoib_add_umcast_attr(priv->dev))
+ goto sysfs_failed;
+ if (device_create_file(&priv->dev->dev, &dev_attr_create_child))
goto sysfs_failed;
- if (class_device_create_file(&priv->dev->class_dev,
- &class_device_attr_delete_child))
+ if (device_create_file(&priv->dev->dev, &dev_attr_delete_child))
goto sysfs_failed;
return priv->dev;
register_failed:
ib_unregister_event_handler(&priv->event_handler);
- flush_scheduled_work();
+ flush_workqueue(ipoib_workqueue);
event_failed:
ipoib_dev_cleanup(priv->dev);
struct ipoib_dev_priv *priv;
int s, e, p;
+ if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
+ return;
+
dev_list = kmalloc(sizeof *dev_list, GFP_KERNEL);
if (!dev_list)
return;
INIT_LIST_HEAD(dev_list);
- if (device->node_type == IB_NODE_SWITCH) {
+ if (device->node_type == RDMA_NODE_IB_SWITCH) {
s = 0;
e = 0;
} else {
struct ipoib_dev_priv *priv, *tmp;
struct list_head *dev_list;
+ if (rdma_node_get_transport(device->node_type) != RDMA_TRANSPORT_IB)
+ return;
+
dev_list = ib_get_client_data(device, &ipoib_client);
list_for_each_entry_safe(priv, tmp, dev_list, list) {
ib_unregister_event_handler(&priv->event_handler);
- flush_scheduled_work();
+
+ rtnl_lock();
+ dev_change_flags(priv->dev, priv->dev->flags & ~IFF_UP);
+ rtnl_unlock();
+
+ flush_workqueue(ipoib_workqueue);
unregister_netdev(priv->dev);
ipoib_dev_cleanup(priv->dev);
{
int ret;
+ ipoib_recvq_size = roundup_pow_of_two(ipoib_recvq_size);
+ ipoib_recvq_size = min(ipoib_recvq_size, IPOIB_MAX_QUEUE_SIZE);
+ ipoib_recvq_size = max(ipoib_recvq_size, IPOIB_MIN_QUEUE_SIZE);
+
+ ipoib_sendq_size = roundup_pow_of_two(ipoib_sendq_size);
+ ipoib_sendq_size = min(ipoib_sendq_size, IPOIB_MAX_QUEUE_SIZE);
+ ipoib_sendq_size = max(ipoib_sendq_size, max(2 * MAX_SEND_CQE,
+ IPOIB_MIN_QUEUE_SIZE));
+#ifdef CONFIG_INFINIBAND_IPOIB_CM
+ ipoib_max_conn_qp = min(ipoib_max_conn_qp, IPOIB_CM_MAX_CONN_QP);
+#endif
+
+ /*
+ * When copying small received packets, we only copy from the
+ * linear data part of the SKB, so we rely on this condition.
+ */
+ BUILD_BUG_ON(IPOIB_CM_COPYBREAK > IPOIB_CM_HEAD_SIZE);
+
ret = ipoib_register_debugfs();
if (ret)
return ret;
goto err_fs;
}
+ ib_sa_register_client(&ipoib_sa_client);
+
ret = ib_register_client(&ipoib_client);
if (ret)
- goto err_wq;
+ goto err_sa;
return 0;
-err_wq:
+err_sa:
+ ib_sa_unregister_client(&ipoib_sa_client);
destroy_workqueue(ipoib_workqueue);
err_fs:
static void __exit ipoib_cleanup_module(void)
{
ib_unregister_client(&ipoib_client);
+ ib_sa_unregister_client(&ipoib_sa_client);
ipoib_unregister_debugfs();
destroy_workqueue(ipoib_workqueue);
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff