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path: root/drivers/infiniband
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-rw-r--r--drivers/infiniband/core/addr.c16
-rw-r--r--drivers/infiniband/hw/cxgb3/iwch_cm.c16
-rw-r--r--drivers/infiniband/hw/cxgb4/cm.c46
-rw-r--r--drivers/infiniband/hw/mlx4/qp.c2
-rw-r--r--drivers/infiniband/hw/nes/nes_cm.c8
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_main.c59
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_multicast.c24
7 files changed, 108 insertions, 63 deletions
diff --git a/drivers/infiniband/core/addr.c b/drivers/infiniband/core/addr.c
index 8e21d457b899..f2a84c6f8543 100644
--- a/drivers/infiniband/core/addr.c
+++ b/drivers/infiniband/core/addr.c
@@ -215,7 +215,9 @@ static int addr4_resolve(struct sockaddr_in *src_in,
neigh = neigh_lookup(&arp_tbl, &rt->rt_gateway, rt->dst.dev);
if (!neigh || !(neigh->nud_state & NUD_VALID)) {
- neigh_event_send(rt->dst.neighbour, NULL);
+ rcu_read_lock();
+ neigh_event_send(dst_get_neighbour(&rt->dst), NULL);
+ rcu_read_unlock();
ret = -ENODATA;
if (neigh)
goto release;
@@ -273,14 +275,16 @@ static int addr6_resolve(struct sockaddr_in6 *src_in,
goto put;
}
- neigh = dst->neighbour;
+ rcu_read_lock();
+ neigh = dst_get_neighbour(dst);
if (!neigh || !(neigh->nud_state & NUD_VALID)) {
- neigh_event_send(dst->neighbour, NULL);
+ if (neigh)
+ neigh_event_send(neigh, NULL);
ret = -ENODATA;
- goto put;
+ } else {
+ ret = rdma_copy_addr(addr, dst->dev, neigh->ha);
}
-
- ret = rdma_copy_addr(addr, dst->dev, neigh->ha);
+ rcu_read_unlock();
put:
dst_release(dst);
return ret;
diff --git a/drivers/infiniband/hw/cxgb3/iwch_cm.c b/drivers/infiniband/hw/cxgb3/iwch_cm.c
index 2332dc22aa04..e55ce7a428be 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_cm.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_cm.c
@@ -1328,6 +1328,7 @@ static int pass_accept_req(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
struct iwch_ep *child_ep, *parent_ep = ctx;
struct cpl_pass_accept_req *req = cplhdr(skb);
unsigned int hwtid = GET_TID(req);
+ struct neighbour *neigh;
struct dst_entry *dst;
struct l2t_entry *l2t;
struct rtable *rt;
@@ -1364,7 +1365,10 @@ static int pass_accept_req(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
goto reject;
}
dst = &rt->dst;
- l2t = t3_l2t_get(tdev, dst->neighbour, dst->neighbour->dev);
+ rcu_read_lock();
+ neigh = dst_get_neighbour(dst);
+ l2t = t3_l2t_get(tdev, neigh, neigh->dev);
+ rcu_read_unlock();
if (!l2t) {
printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n",
__func__);
@@ -1874,10 +1878,11 @@ static int is_loopback_dst(struct iw_cm_id *cm_id)
int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
{
- int err = 0;
struct iwch_dev *h = to_iwch_dev(cm_id->device);
+ struct neighbour *neigh;
struct iwch_ep *ep;
struct rtable *rt;
+ int err = 0;
if (is_loopback_dst(cm_id)) {
err = -ENOSYS;
@@ -1933,9 +1938,12 @@ int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
}
ep->dst = &rt->dst;
+ rcu_read_lock();
+ neigh = dst_get_neighbour(ep->dst);
+
/* get a l2t entry */
- ep->l2t = t3_l2t_get(ep->com.tdev, ep->dst->neighbour,
- ep->dst->neighbour->dev);
+ ep->l2t = t3_l2t_get(ep->com.tdev, neigh, neigh->dev);
+ rcu_read_unlock();
if (!ep->l2t) {
printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__);
err = -ENOMEM;
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index 31fb44085c9b..daa93e942e16 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -1325,6 +1325,7 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
unsigned int stid = GET_POPEN_TID(ntohl(req->tos_stid));
struct tid_info *t = dev->rdev.lldi.tids;
unsigned int hwtid = GET_TID(req);
+ struct neighbour *neigh;
struct dst_entry *dst;
struct l2t_entry *l2t;
struct rtable *rt;
@@ -1357,11 +1358,12 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
goto reject;
}
dst = &rt->dst;
- if (dst->neighbour->dev->flags & IFF_LOOPBACK) {
+ rcu_read_lock();
+ neigh = dst_get_neighbour(dst);
+ if (neigh->dev->flags & IFF_LOOPBACK) {
pdev = ip_dev_find(&init_net, peer_ip);
BUG_ON(!pdev);
- l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, dst->neighbour,
- pdev, 0);
+ l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, pdev, 0);
mtu = pdev->mtu;
tx_chan = cxgb4_port_chan(pdev);
smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1;
@@ -1372,18 +1374,18 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
rss_qid = dev->rdev.lldi.rxq_ids[cxgb4_port_idx(pdev) * step];
dev_put(pdev);
} else {
- l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, dst->neighbour,
- dst->neighbour->dev, 0);
+ l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, neigh->dev, 0);
mtu = dst_mtu(dst);
- tx_chan = cxgb4_port_chan(dst->neighbour->dev);
- smac_idx = (cxgb4_port_viid(dst->neighbour->dev) & 0x7F) << 1;
+ tx_chan = cxgb4_port_chan(neigh->dev);
+ smac_idx = (cxgb4_port_viid(neigh->dev) & 0x7F) << 1;
step = dev->rdev.lldi.ntxq / dev->rdev.lldi.nchan;
- txq_idx = cxgb4_port_idx(dst->neighbour->dev) * step;
- ctrlq_idx = cxgb4_port_idx(dst->neighbour->dev);
+ txq_idx = cxgb4_port_idx(neigh->dev) * step;
+ ctrlq_idx = cxgb4_port_idx(neigh->dev);
step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan;
rss_qid = dev->rdev.lldi.rxq_ids[
- cxgb4_port_idx(dst->neighbour->dev) * step];
+ cxgb4_port_idx(neigh->dev) * step];
}
+ rcu_read_unlock();
if (!l2t) {
printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n",
__func__);
@@ -1847,6 +1849,7 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
struct c4iw_ep *ep;
struct rtable *rt;
struct net_device *pdev;
+ struct neighbour *neigh;
int step;
if ((conn_param->ord > c4iw_max_read_depth) ||
@@ -1908,14 +1911,16 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
}
ep->dst = &rt->dst;
+ rcu_read_lock();
+ neigh = dst_get_neighbour(ep->dst);
+
/* get a l2t entry */
- if (ep->dst->neighbour->dev->flags & IFF_LOOPBACK) {
+ if (neigh->dev->flags & IFF_LOOPBACK) {
PDBG("%s LOOPBACK\n", __func__);
pdev = ip_dev_find(&init_net,
cm_id->remote_addr.sin_addr.s_addr);
ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t,
- ep->dst->neighbour,
- pdev, 0);
+ neigh, pdev, 0);
ep->mtu = pdev->mtu;
ep->tx_chan = cxgb4_port_chan(pdev);
ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1;
@@ -1930,21 +1935,20 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
dev_put(pdev);
} else {
ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t,
- ep->dst->neighbour,
- ep->dst->neighbour->dev, 0);
+ neigh, neigh->dev, 0);
ep->mtu = dst_mtu(ep->dst);
- ep->tx_chan = cxgb4_port_chan(ep->dst->neighbour->dev);
- ep->smac_idx = (cxgb4_port_viid(ep->dst->neighbour->dev) &
- 0x7F) << 1;
+ ep->tx_chan = cxgb4_port_chan(neigh->dev);
+ ep->smac_idx = (cxgb4_port_viid(neigh->dev) & 0x7F) << 1;
step = ep->com.dev->rdev.lldi.ntxq /
ep->com.dev->rdev.lldi.nchan;
- ep->txq_idx = cxgb4_port_idx(ep->dst->neighbour->dev) * step;
- ep->ctrlq_idx = cxgb4_port_idx(ep->dst->neighbour->dev);
+ ep->txq_idx = cxgb4_port_idx(neigh->dev) * step;
+ ep->ctrlq_idx = cxgb4_port_idx(neigh->dev);
step = ep->com.dev->rdev.lldi.nrxq /
ep->com.dev->rdev.lldi.nchan;
ep->rss_qid = ep->com.dev->rdev.lldi.rxq_ids[
- cxgb4_port_idx(ep->dst->neighbour->dev) * step];
+ cxgb4_port_idx(neigh->dev) * step];
}
+ rcu_read_unlock();
if (!ep->l2t) {
printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__);
err = -ENOMEM;
diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index 2001f20a4361..23c04ff6519b 100644
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -1301,7 +1301,7 @@ static int build_mlx_header(struct mlx4_ib_sqp *sqp, struct ib_send_wr *wr,
int is_eth;
int is_vlan = 0;
int is_grh;
- u16 vlan;
+ u16 vlan = 0;
send_size = 0;
for (i = 0; i < wr->num_sge; ++i)
diff --git a/drivers/infiniband/hw/nes/nes_cm.c b/drivers/infiniband/hw/nes/nes_cm.c
index e74cdf9ef471..a1f74f6381ba 100644
--- a/drivers/infiniband/hw/nes/nes_cm.c
+++ b/drivers/infiniband/hw/nes/nes_cm.c
@@ -1150,9 +1150,11 @@ static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpi
neigh_release(neigh);
}
- if ((neigh == NULL) || (!(neigh->nud_state & NUD_VALID)))
- neigh_event_send(rt->dst.neighbour, NULL);
-
+ if ((neigh == NULL) || (!(neigh->nud_state & NUD_VALID))) {
+ rcu_read_lock();
+ neigh_event_send(dst_get_neighbour(&rt->dst), NULL);
+ rcu_read_unlock();
+ }
ip_rt_put(rt);
return rc;
}
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 86addca9ddf6..a98c414978ec 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -555,14 +555,17 @@ static int path_rec_start(struct net_device *dev,
return 0;
}
+/* called with rcu_read_lock */
static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_path *path;
struct ipoib_neigh *neigh;
+ struct neighbour *n;
unsigned long flags;
- neigh = ipoib_neigh_alloc(skb_dst(skb)->neighbour, skb->dev);
+ n = dst_get_neighbour(skb_dst(skb));
+ neigh = ipoib_neigh_alloc(n, skb->dev);
if (!neigh) {
++dev->stats.tx_dropped;
dev_kfree_skb_any(skb);
@@ -571,9 +574,9 @@ static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
spin_lock_irqsave(&priv->lock, flags);
- path = __path_find(dev, skb_dst(skb)->neighbour->ha + 4);
+ path = __path_find(dev, n->ha + 4);
if (!path) {
- path = path_rec_create(dev, skb_dst(skb)->neighbour->ha + 4);
+ path = path_rec_create(dev, n->ha + 4);
if (!path)
goto err_path;
@@ -607,7 +610,7 @@ static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
}
} else {
spin_unlock_irqrestore(&priv->lock, flags);
- ipoib_send(dev, skb, path->ah, IPOIB_QPN(skb_dst(skb)->neighbour->ha));
+ ipoib_send(dev, skb, path->ah, IPOIB_QPN(n->ha));
return;
}
} else {
@@ -634,20 +637,24 @@ err_drop:
spin_unlock_irqrestore(&priv->lock, flags);
}
+/* called with rcu_read_lock */
static void ipoib_path_lookup(struct sk_buff *skb, struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(skb->dev);
+ struct dst_entry *dst = skb_dst(skb);
+ struct neighbour *n;
/* Look up path record for unicasts */
- if (skb_dst(skb)->neighbour->ha[4] != 0xff) {
+ n = dst_get_neighbour(dst);
+ if (n->ha[4] != 0xff) {
neigh_add_path(skb, dev);
return;
}
/* Add in the P_Key for multicasts */
- 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);
+ n->ha[8] = (priv->pkey >> 8) & 0xff;
+ n->ha[9] = priv->pkey & 0xff;
+ ipoib_mcast_send(dev, n->ha + 4, skb);
}
static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev,
@@ -712,18 +719,23 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_neigh *neigh;
+ struct neighbour *n = NULL;
unsigned long flags;
- if (likely(skb_dst(skb) && skb_dst(skb)->neighbour)) {
- if (unlikely(!*to_ipoib_neigh(skb_dst(skb)->neighbour))) {
+ rcu_read_lock();
+ if (likely(skb_dst(skb)))
+ n = dst_get_neighbour(skb_dst(skb));
+
+ if (likely(n)) {
+ if (unlikely(!*to_ipoib_neigh(n))) {
ipoib_path_lookup(skb, dev);
- return NETDEV_TX_OK;
+ goto unlock;
}
- neigh = *to_ipoib_neigh(skb_dst(skb)->neighbour);
+ neigh = *to_ipoib_neigh(n);
if (unlikely((memcmp(&neigh->dgid.raw,
- skb_dst(skb)->neighbour->ha + 4,
+ n->ha + 4,
sizeof(union ib_gid))) ||
(neigh->dev != dev))) {
spin_lock_irqsave(&priv->lock, flags);
@@ -740,17 +752,17 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
ipoib_neigh_free(dev, neigh);
spin_unlock_irqrestore(&priv->lock, flags);
ipoib_path_lookup(skb, dev);
- return NETDEV_TX_OK;
+ goto unlock;
}
if (ipoib_cm_get(neigh)) {
if (ipoib_cm_up(neigh)) {
ipoib_cm_send(dev, skb, ipoib_cm_get(neigh));
- return NETDEV_TX_OK;
+ goto unlock;
}
} else if (neigh->ah) {
- ipoib_send(dev, skb, neigh->ah, IPOIB_QPN(skb_dst(skb)->neighbour->ha));
- return NETDEV_TX_OK;
+ ipoib_send(dev, skb, neigh->ah, IPOIB_QPN(n->ha));
+ goto unlock;
}
if (skb_queue_len(&neigh->queue) < IPOIB_MAX_PATH_REC_QUEUE) {
@@ -784,13 +796,14 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
phdr->hwaddr + 4);
dev_kfree_skb_any(skb);
++dev->stats.tx_dropped;
- return NETDEV_TX_OK;
+ goto unlock;
}
unicast_arp_send(skb, dev, phdr);
}
}
-
+unlock:
+ rcu_read_unlock();
return NETDEV_TX_OK;
}
@@ -812,6 +825,8 @@ static int ipoib_hard_header(struct sk_buff *skb,
const void *daddr, const void *saddr, unsigned len)
{
struct ipoib_header *header;
+ struct dst_entry *dst;
+ struct neighbour *n;
header = (struct ipoib_header *) skb_push(skb, sizeof *header);
@@ -823,7 +838,11 @@ static int ipoib_hard_header(struct sk_buff *skb,
* destination address onto the front of the skb so we can
* figure out where to send the packet later.
*/
- if ((!skb_dst(skb) || !skb_dst(skb)->neighbour) && daddr) {
+ dst = skb_dst(skb);
+ n = NULL;
+ if (dst)
+ n = dst_get_neighbour_raw(dst);
+ if ((!dst || !n) && daddr) {
struct ipoib_pseudoheader *phdr =
(struct ipoib_pseudoheader *) skb_push(skb, sizeof *phdr);
memcpy(phdr->hwaddr, daddr, INFINIBAND_ALEN);
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
index 3871ac663554..a8d2a891b840 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_multicast.c
@@ -258,11 +258,15 @@ static int ipoib_mcast_join_finish(struct ipoib_mcast *mcast,
netif_tx_lock_bh(dev);
while (!skb_queue_empty(&mcast->pkt_queue)) {
struct sk_buff *skb = skb_dequeue(&mcast->pkt_queue);
+ struct dst_entry *dst = skb_dst(skb);
+ struct neighbour *n = NULL;
+
netif_tx_unlock_bh(dev);
skb->dev = dev;
-
- if (!skb_dst(skb) || !skb_dst(skb)->neighbour) {
+ if (dst)
+ n = dst_get_neighbour_raw(dst);
+ if (!dst || !n) {
/* put pseudoheader back on for next time */
skb_push(skb, sizeof (struct ipoib_pseudoheader));
}
@@ -715,11 +719,15 @@ void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb)
out:
if (mcast && mcast->ah) {
- 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);
+ struct dst_entry *dst = skb_dst(skb);
+ struct neighbour *n = NULL;
+
+ rcu_read_lock();
+ if (dst)
+ n = dst_get_neighbour(dst);
+ if (n && !*to_ipoib_neigh(n)) {
+ struct ipoib_neigh *neigh = ipoib_neigh_alloc(n,
+ skb->dev);
if (neigh) {
kref_get(&mcast->ah->ref);
@@ -727,7 +735,7 @@ out:
list_add_tail(&neigh->list, &mcast->neigh_list);
}
}
-
+ rcu_read_unlock();
spin_unlock_irqrestore(&priv->lock, flags);
ipoib_send(dev, skb, mcast->ah, IB_MULTICAST_QPN);
return;
generated by cgit v1.2.3 (git 2.0.4) at 2024-12-27 11:12:29 +0000