2005-04-16 22:20:36 +00:00
|
|
|
/*
|
|
|
|
* Copyright (c) 2004, 2005 Topspin Communications. All rights reserved.
|
2005-08-11 06:03:10 +00:00
|
|
|
* Copyright (c) 2005 Sun Microsystems, Inc. All rights reserved.
|
|
|
|
* Copyright (c) 2005 Mellanox Technologies. All rights reserved.
|
|
|
|
* Copyright (c) 2004, 2005 Voltaire, Inc. All rights reserved.
|
2005-04-16 22:20:36 +00:00
|
|
|
*
|
|
|
|
* This software is available to you under a choice of one of two
|
|
|
|
* licenses. You may choose to be licensed under the terms of the GNU
|
|
|
|
* General Public License (GPL) Version 2, available from the file
|
|
|
|
* COPYING in the main directory of this source tree, or the
|
|
|
|
* OpenIB.org BSD license below:
|
|
|
|
*
|
|
|
|
* Redistribution and use in source and binary forms, with or
|
|
|
|
* without modification, are permitted provided that the following
|
|
|
|
* conditions are met:
|
|
|
|
*
|
|
|
|
* - Redistributions of source code must retain the above
|
|
|
|
* copyright notice, this list of conditions and the following
|
|
|
|
* disclaimer.
|
|
|
|
*
|
|
|
|
* - Redistributions in binary form must reproduce the above
|
|
|
|
* copyright notice, this list of conditions and the following
|
|
|
|
* disclaimer in the documentation and/or other materials
|
|
|
|
* provided with the distribution.
|
|
|
|
*
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
|
|
|
|
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
|
|
|
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
|
|
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
|
|
|
|
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
|
|
|
|
* 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_ib.c 1386 2004-12-27 16:23:17Z roland $
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <linux/delay.h>
|
|
|
|
#include <linux/dma-mapping.h>
|
|
|
|
|
2005-08-25 20:40:04 +00:00
|
|
|
#include <rdma/ib_cache.h>
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
#include "ipoib.h"
|
|
|
|
|
|
|
|
#ifdef CONFIG_INFINIBAND_IPOIB_DEBUG_DATA
|
|
|
|
static int data_debug_level;
|
|
|
|
|
|
|
|
module_param(data_debug_level, int, 0644);
|
|
|
|
MODULE_PARM_DESC(data_debug_level,
|
|
|
|
"Enable data path debug tracing if > 0");
|
|
|
|
#endif
|
|
|
|
|
2006-01-13 22:51:39 +00:00
|
|
|
static DEFINE_MUTEX(pkey_mutex);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
struct ipoib_ah *ipoib_create_ah(struct net_device *dev,
|
|
|
|
struct ib_pd *pd, struct ib_ah_attr *attr)
|
|
|
|
{
|
|
|
|
struct ipoib_ah *ah;
|
|
|
|
|
|
|
|
ah = kmalloc(sizeof *ah, GFP_KERNEL);
|
|
|
|
if (!ah)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
ah->dev = dev;
|
|
|
|
ah->last_send = 0;
|
|
|
|
kref_init(&ah->ref);
|
|
|
|
|
|
|
|
ah->ah = ib_create_ah(pd, attr);
|
|
|
|
if (IS_ERR(ah->ah)) {
|
|
|
|
kfree(ah);
|
|
|
|
ah = NULL;
|
|
|
|
} else
|
|
|
|
ipoib_dbg(netdev_priv(dev), "Created ah %p\n", ah->ah);
|
|
|
|
|
|
|
|
return ah;
|
|
|
|
}
|
|
|
|
|
|
|
|
void ipoib_free_ah(struct kref *kref)
|
|
|
|
{
|
|
|
|
struct ipoib_ah *ah = container_of(kref, struct ipoib_ah, ref);
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(ah->dev);
|
|
|
|
|
|
|
|
unsigned long flags;
|
|
|
|
|
2006-06-18 03:37:34 +00:00
|
|
|
spin_lock_irqsave(&priv->lock, flags);
|
|
|
|
list_add_tail(&ah->list, &priv->dead_ahs);
|
|
|
|
spin_unlock_irqrestore(&priv->lock, flags);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2005-10-28 22:30:34 +00:00
|
|
|
static int ipoib_ib_post_receive(struct net_device *dev, int id)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2005-10-28 22:30:34 +00:00
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
struct ib_sge list;
|
|
|
|
struct ib_recv_wr param;
|
2005-04-16 22:20:36 +00:00
|
|
|
struct ib_recv_wr *bad_wr;
|
2005-10-28 22:30:34 +00:00
|
|
|
int ret;
|
|
|
|
|
|
|
|
list.addr = priv->rx_ring[id].mapping;
|
|
|
|
list.length = IPOIB_BUF_SIZE;
|
|
|
|
list.lkey = priv->mr->lkey;
|
|
|
|
|
|
|
|
param.next = NULL;
|
|
|
|
param.wr_id = id | IPOIB_OP_RECV;
|
|
|
|
param.sg_list = &list;
|
|
|
|
param.num_sge = 1;
|
|
|
|
|
|
|
|
ret = ib_post_recv(priv->qp, ¶m, &bad_wr);
|
|
|
|
if (unlikely(ret)) {
|
|
|
|
ipoib_warn(priv, "receive failed for buf %d (%d)\n", id, ret);
|
2006-12-12 22:30:48 +00:00
|
|
|
ib_dma_unmap_single(priv->ca, priv->rx_ring[id].mapping,
|
|
|
|
IPOIB_BUF_SIZE, DMA_FROM_DEVICE);
|
2005-10-28 22:30:34 +00:00
|
|
|
dev_kfree_skb_any(priv->rx_ring[id].skb);
|
|
|
|
priv->rx_ring[id].skb = NULL;
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2005-10-28 22:30:34 +00:00
|
|
|
return ret;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2005-10-28 22:30:34 +00:00
|
|
|
static int ipoib_alloc_rx_skb(struct net_device *dev, int id)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
struct sk_buff *skb;
|
2006-12-12 22:30:48 +00:00
|
|
|
u64 addr;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
skb = dev_alloc_skb(IPOIB_BUF_SIZE + 4);
|
2005-10-28 22:30:34 +00:00
|
|
|
if (!skb)
|
2005-04-16 22:20:36 +00:00
|
|
|
return -ENOMEM;
|
2005-10-28 22:30:34 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* IB will leave a 40 byte gap for a GRH and IPoIB adds a 4 byte
|
|
|
|
* header. So we need 4 more bytes to get to 48 and align the
|
|
|
|
* IP header to a multiple of 16.
|
|
|
|
*/
|
|
|
|
skb_reserve(skb, 4);
|
|
|
|
|
2006-12-12 22:30:48 +00:00
|
|
|
addr = ib_dma_map_single(priv->ca, skb->data, IPOIB_BUF_SIZE,
|
|
|
|
DMA_FROM_DEVICE);
|
|
|
|
if (unlikely(ib_dma_mapping_error(priv->ca, addr))) {
|
2005-04-16 22:20:36 +00:00
|
|
|
dev_kfree_skb_any(skb);
|
2005-10-28 22:30:34 +00:00
|
|
|
return -EIO;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2005-10-28 22:30:34 +00:00
|
|
|
priv->rx_ring[id].skb = skb;
|
|
|
|
priv->rx_ring[id].mapping = addr;
|
|
|
|
|
|
|
|
return 0;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static int ipoib_ib_post_receives(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
int i;
|
|
|
|
|
2006-04-10 16:43:58 +00:00
|
|
|
for (i = 0; i < ipoib_recvq_size; ++i) {
|
2005-10-28 22:30:34 +00:00
|
|
|
if (ipoib_alloc_rx_skb(dev, i)) {
|
|
|
|
ipoib_warn(priv, "failed to allocate receive buffer %d\n", i);
|
|
|
|
return -ENOMEM;
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
if (ipoib_ib_post_receive(dev, i)) {
|
|
|
|
ipoib_warn(priv, "ipoib_ib_post_receive failed for buf %d\n", i);
|
|
|
|
return -EIO;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2006-09-22 22:22:52 +00:00
|
|
|
static void ipoib_ib_handle_rx_wc(struct net_device *dev, struct ib_wc *wc)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
2006-09-22 22:22:52 +00:00
|
|
|
unsigned int wr_id = wc->wr_id & ~IPOIB_OP_RECV;
|
|
|
|
struct sk_buff *skb;
|
2006-12-12 22:30:48 +00:00
|
|
|
u64 addr;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-04-19 03:20:53 +00:00
|
|
|
ipoib_dbg_data(priv, "recv completion: id %d, status: %d\n",
|
|
|
|
wr_id, wc->status);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-09-22 22:22:52 +00:00
|
|
|
if (unlikely(wr_id >= ipoib_recvq_size)) {
|
|
|
|
ipoib_warn(priv, "recv completion event with wrid %d (> %d)\n",
|
|
|
|
wr_id, ipoib_recvq_size);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
skb = priv->rx_ring[wr_id].skb;
|
|
|
|
addr = priv->rx_ring[wr_id].mapping;
|
|
|
|
|
|
|
|
if (unlikely(wc->status != IB_WC_SUCCESS)) {
|
|
|
|
if (wc->status != IB_WC_WR_FLUSH_ERR)
|
|
|
|
ipoib_warn(priv, "failed recv event "
|
|
|
|
"(status=%d, wrid=%d vend_err %x)\n",
|
|
|
|
wc->status, wr_id, wc->vendor_err);
|
2006-12-12 22:30:48 +00:00
|
|
|
ib_dma_unmap_single(priv->ca, addr,
|
|
|
|
IPOIB_BUF_SIZE, DMA_FROM_DEVICE);
|
2006-09-22 22:22:52 +00:00
|
|
|
dev_kfree_skb_any(skb);
|
|
|
|
priv->rx_ring[wr_id].skb = NULL;
|
|
|
|
return;
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-09-22 22:22:52 +00:00
|
|
|
/*
|
|
|
|
* If we can't allocate a new RX buffer, dump
|
|
|
|
* this packet and reuse the old buffer.
|
|
|
|
*/
|
|
|
|
if (unlikely(ipoib_alloc_rx_skb(dev, wr_id))) {
|
|
|
|
++priv->stats.rx_dropped;
|
|
|
|
goto repost;
|
|
|
|
}
|
|
|
|
|
|
|
|
ipoib_dbg_data(priv, "received %d bytes, SLID 0x%04x\n",
|
|
|
|
wc->byte_len, wc->slid);
|
|
|
|
|
2006-12-12 22:30:48 +00:00
|
|
|
ib_dma_unmap_single(priv->ca, addr, IPOIB_BUF_SIZE, DMA_FROM_DEVICE);
|
2006-09-22 22:22:52 +00:00
|
|
|
|
|
|
|
skb_put(skb, wc->byte_len);
|
|
|
|
skb_pull(skb, IB_GRH_BYTES);
|
|
|
|
|
|
|
|
if (wc->slid != priv->local_lid ||
|
|
|
|
wc->src_qp != priv->qp->qp_num) {
|
|
|
|
skb->protocol = ((struct ipoib_header *) skb->data)->proto;
|
2007-03-19 22:30:44 +00:00
|
|
|
skb_reset_mac_header(skb);
|
2006-09-22 22:22:52 +00:00
|
|
|
skb_pull(skb, IPOIB_ENCAP_LEN);
|
|
|
|
|
|
|
|
dev->last_rx = jiffies;
|
|
|
|
++priv->stats.rx_packets;
|
|
|
|
priv->stats.rx_bytes += skb->len;
|
|
|
|
|
|
|
|
skb->dev = dev;
|
|
|
|
/* XXX get correct PACKET_ type here */
|
|
|
|
skb->pkt_type = PACKET_HOST;
|
2007-05-07 04:05:32 +00:00
|
|
|
netif_receive_skb(skb);
|
2005-04-16 22:20:36 +00:00
|
|
|
} else {
|
2006-09-22 22:22:52 +00:00
|
|
|
ipoib_dbg_data(priv, "dropping loopback packet\n");
|
|
|
|
dev_kfree_skb_any(skb);
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-09-22 22:22:52 +00:00
|
|
|
repost:
|
|
|
|
if (unlikely(ipoib_ib_post_receive(dev, wr_id)))
|
|
|
|
ipoib_warn(priv, "ipoib_ib_post_receive failed "
|
|
|
|
"for buf %d\n", wr_id);
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-09-22 22:22:52 +00:00
|
|
|
static void ipoib_ib_handle_tx_wc(struct net_device *dev, struct ib_wc *wc)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
unsigned int wr_id = wc->wr_id;
|
|
|
|
struct ipoib_tx_buf *tx_req;
|
|
|
|
unsigned long flags;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-04-19 03:20:53 +00:00
|
|
|
ipoib_dbg_data(priv, "send completion: id %d, status: %d\n",
|
|
|
|
wr_id, wc->status);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-09-22 22:22:52 +00:00
|
|
|
if (unlikely(wr_id >= ipoib_sendq_size)) {
|
|
|
|
ipoib_warn(priv, "send completion event with wrid %d (> %d)\n",
|
|
|
|
wr_id, ipoib_sendq_size);
|
|
|
|
return;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2006-09-22 22:22:52 +00:00
|
|
|
|
|
|
|
tx_req = &priv->tx_ring[wr_id];
|
|
|
|
|
2006-12-12 22:30:48 +00:00
|
|
|
ib_dma_unmap_single(priv->ca, tx_req->mapping,
|
|
|
|
tx_req->skb->len, DMA_TO_DEVICE);
|
2006-09-22 22:22:52 +00:00
|
|
|
|
|
|
|
++priv->stats.tx_packets;
|
|
|
|
priv->stats.tx_bytes += tx_req->skb->len;
|
|
|
|
|
|
|
|
dev_kfree_skb_any(tx_req->skb);
|
|
|
|
|
|
|
|
spin_lock_irqsave(&priv->tx_lock, flags);
|
|
|
|
++priv->tx_tail;
|
2007-02-05 20:12:23 +00:00
|
|
|
if (unlikely(test_bit(IPOIB_FLAG_NETIF_STOPPED, &priv->flags)) &&
|
|
|
|
priv->tx_head - priv->tx_tail <= ipoib_sendq_size >> 1) {
|
|
|
|
clear_bit(IPOIB_FLAG_NETIF_STOPPED, &priv->flags);
|
2006-09-22 22:22:52 +00:00
|
|
|
netif_wake_queue(dev);
|
2007-02-05 20:12:23 +00:00
|
|
|
}
|
2006-09-22 22:22:52 +00:00
|
|
|
spin_unlock_irqrestore(&priv->tx_lock, flags);
|
|
|
|
|
|
|
|
if (wc->status != IB_WC_SUCCESS &&
|
|
|
|
wc->status != IB_WC_WR_FLUSH_ERR)
|
|
|
|
ipoib_warn(priv, "failed send event "
|
|
|
|
"(status=%d, wrid=%d vend_err %x)\n",
|
|
|
|
wc->status, wr_id, wc->vendor_err);
|
|
|
|
}
|
|
|
|
|
2007-05-07 04:05:32 +00:00
|
|
|
int ipoib_poll(struct net_device *dev, int *budget)
|
2006-09-22 22:22:52 +00:00
|
|
|
{
|
2007-05-07 04:05:32 +00:00
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
int max = min(*budget, dev->quota);
|
|
|
|
int done;
|
|
|
|
int t;
|
|
|
|
int empty;
|
|
|
|
int n, i;
|
|
|
|
|
|
|
|
done = 0;
|
|
|
|
empty = 0;
|
|
|
|
|
|
|
|
while (max) {
|
|
|
|
t = min(IPOIB_NUM_WC, max);
|
|
|
|
n = ib_poll_cq(priv->cq, t, priv->ibwc);
|
|
|
|
|
|
|
|
for (i = 0; i < n; ++i) {
|
|
|
|
struct ib_wc *wc = priv->ibwc + i;
|
|
|
|
|
|
|
|
if (wc->wr_id & IPOIB_CM_OP_SRQ) {
|
|
|
|
++done;
|
|
|
|
--max;
|
|
|
|
ipoib_cm_handle_rx_wc(dev, wc);
|
|
|
|
} else if (wc->wr_id & IPOIB_OP_RECV) {
|
|
|
|
++done;
|
|
|
|
--max;
|
|
|
|
ipoib_ib_handle_rx_wc(dev, wc);
|
|
|
|
} else
|
|
|
|
ipoib_ib_handle_tx_wc(dev, wc);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (n != t) {
|
|
|
|
empty = 1;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
dev->quota -= done;
|
|
|
|
*budget -= done;
|
|
|
|
|
|
|
|
if (empty) {
|
|
|
|
netif_rx_complete(dev);
|
|
|
|
if (unlikely(ib_req_notify_cq(priv->cq,
|
|
|
|
IB_CQ_NEXT_COMP |
|
|
|
|
IB_CQ_REPORT_MISSED_EVENTS)) &&
|
|
|
|
netif_rx_reschedule(dev, 0))
|
|
|
|
return 1;
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 1;
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void ipoib_ib_completion(struct ib_cq *cq, void *dev_ptr)
|
|
|
|
{
|
2007-05-07 04:05:32 +00:00
|
|
|
netif_rx_schedule(dev_ptr);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
static inline int post_send(struct ipoib_dev_priv *priv,
|
|
|
|
unsigned int wr_id,
|
|
|
|
struct ib_ah *address, u32 qpn,
|
2006-12-12 22:30:48 +00:00
|
|
|
u64 addr, int len)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct ib_send_wr *bad_wr;
|
|
|
|
|
|
|
|
priv->tx_sge.addr = addr;
|
|
|
|
priv->tx_sge.length = len;
|
|
|
|
|
|
|
|
priv->tx_wr.wr_id = wr_id;
|
|
|
|
priv->tx_wr.wr.ud.remote_qpn = qpn;
|
|
|
|
priv->tx_wr.wr.ud.ah = address;
|
|
|
|
|
|
|
|
return ib_post_send(priv->qp, &priv->tx_wr, &bad_wr);
|
|
|
|
}
|
|
|
|
|
|
|
|
void ipoib_send(struct net_device *dev, struct sk_buff *skb,
|
|
|
|
struct ipoib_ah *address, u32 qpn)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
2005-10-28 22:30:34 +00:00
|
|
|
struct ipoib_tx_buf *tx_req;
|
2006-12-12 22:30:48 +00:00
|
|
|
u64 addr;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2007-03-21 13:45:05 +00:00
|
|
|
if (unlikely(skb->len > priv->mcast_mtu + IPOIB_ENCAP_LEN)) {
|
2005-04-16 22:20:36 +00:00
|
|
|
ipoib_warn(priv, "packet len %d (> %d) too long to send, dropping\n",
|
2007-03-21 13:45:05 +00:00
|
|
|
skb->len, priv->mcast_mtu + IPOIB_ENCAP_LEN);
|
2005-04-16 22:20:36 +00:00
|
|
|
++priv->stats.tx_dropped;
|
|
|
|
++priv->stats.tx_errors;
|
2007-02-05 20:12:23 +00:00
|
|
|
ipoib_cm_skb_too_long(dev, skb, priv->mcast_mtu);
|
2005-04-16 22:20:36 +00:00
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
ipoib_dbg_data(priv, "sending packet, length=%d address=%p qpn=0x%06x\n",
|
|
|
|
skb->len, address, qpn);
|
|
|
|
|
|
|
|
/*
|
|
|
|
* We put the skb into the tx_ring _before_ we call post_send()
|
|
|
|
* because it's entirely possible that the completion handler will
|
|
|
|
* run before we execute anything after the post_send(). That
|
|
|
|
* means we have to make sure everything is properly recorded and
|
|
|
|
* our state is consistent before we call post_send().
|
|
|
|
*/
|
2006-04-10 16:43:58 +00:00
|
|
|
tx_req = &priv->tx_ring[priv->tx_head & (ipoib_sendq_size - 1)];
|
2005-04-16 22:20:36 +00:00
|
|
|
tx_req->skb = skb;
|
2006-12-12 22:30:48 +00:00
|
|
|
addr = ib_dma_map_single(priv->ca, skb->data, skb->len,
|
|
|
|
DMA_TO_DEVICE);
|
|
|
|
if (unlikely(ib_dma_mapping_error(priv->ca, addr))) {
|
2006-10-10 19:50:38 +00:00
|
|
|
++priv->stats.tx_errors;
|
|
|
|
dev_kfree_skb_any(skb);
|
|
|
|
return;
|
|
|
|
}
|
2006-12-12 22:30:48 +00:00
|
|
|
tx_req->mapping = addr;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-04-10 16:43:58 +00:00
|
|
|
if (unlikely(post_send(priv, priv->tx_head & (ipoib_sendq_size - 1),
|
2005-04-16 22:20:36 +00:00
|
|
|
address->ah, qpn, addr, skb->len))) {
|
|
|
|
ipoib_warn(priv, "post_send failed\n");
|
|
|
|
++priv->stats.tx_errors;
|
2006-12-12 22:30:48 +00:00
|
|
|
ib_dma_unmap_single(priv->ca, addr, skb->len, DMA_TO_DEVICE);
|
2005-04-16 22:20:36 +00:00
|
|
|
dev_kfree_skb_any(skb);
|
|
|
|
} else {
|
|
|
|
dev->trans_start = jiffies;
|
|
|
|
|
|
|
|
address->last_send = priv->tx_head;
|
|
|
|
++priv->tx_head;
|
|
|
|
|
2006-04-10 16:43:58 +00:00
|
|
|
if (priv->tx_head - priv->tx_tail == ipoib_sendq_size) {
|
2005-04-16 22:20:36 +00:00
|
|
|
ipoib_dbg(priv, "TX ring full, stopping kernel net queue\n");
|
|
|
|
netif_stop_queue(dev);
|
2007-02-05 20:12:23 +00:00
|
|
|
set_bit(IPOIB_FLAG_NETIF_STOPPED, &priv->flags);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
static void __ipoib_reap_ah(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
struct ipoib_ah *ah, *tah;
|
|
|
|
LIST_HEAD(remove_list);
|
|
|
|
|
2006-06-18 03:37:34 +00:00
|
|
|
spin_lock_irq(&priv->tx_lock);
|
|
|
|
spin_lock(&priv->lock);
|
2005-04-16 22:20:36 +00:00
|
|
|
list_for_each_entry_safe(ah, tah, &priv->dead_ahs, list)
|
2005-07-27 21:41:32 +00:00
|
|
|
if ((int) priv->tx_tail - (int) ah->last_send >= 0) {
|
2005-04-16 22:20:36 +00:00
|
|
|
list_del(&ah->list);
|
2006-06-18 03:37:34 +00:00
|
|
|
ib_destroy_ah(ah->ah);
|
|
|
|
kfree(ah);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
2006-06-18 03:37:34 +00:00
|
|
|
spin_unlock(&priv->lock);
|
|
|
|
spin_unlock_irq(&priv->tx_lock);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2006-11-22 14:57:56 +00:00
|
|
|
void ipoib_reap_ah(struct work_struct *work)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-11-22 14:57:56 +00:00
|
|
|
struct ipoib_dev_priv *priv =
|
|
|
|
container_of(work, struct ipoib_dev_priv, ah_reap_task.work);
|
|
|
|
struct net_device *dev = priv->dev;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
__ipoib_reap_ah(dev);
|
|
|
|
|
|
|
|
if (!test_bit(IPOIB_STOP_REAPER, &priv->flags))
|
|
|
|
queue_delayed_work(ipoib_workqueue, &priv->ah_reap_task, HZ);
|
|
|
|
}
|
|
|
|
|
|
|
|
int ipoib_ib_dev_open(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
int ret;
|
|
|
|
|
2005-10-11 18:08:24 +00:00
|
|
|
ret = ipoib_init_qp(dev);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (ret) {
|
2005-10-11 18:08:24 +00:00
|
|
|
ipoib_warn(priv, "ipoib_init_qp returned %d\n", ret);
|
2005-04-16 22:20:36 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
ret = ipoib_ib_post_receives(dev);
|
|
|
|
if (ret) {
|
|
|
|
ipoib_warn(priv, "ipoib_ib_post_receives returned %d\n", ret);
|
2006-03-02 19:05:19 +00:00
|
|
|
ipoib_ib_dev_stop(dev);
|
2005-04-16 22:20:36 +00:00
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2007-02-05 20:12:23 +00:00
|
|
|
ret = ipoib_cm_dev_open(dev);
|
|
|
|
if (ret) {
|
|
|
|
ipoib_warn(priv, "ipoib_ib_post_receives returned %d\n", ret);
|
|
|
|
ipoib_ib_dev_stop(dev);
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
clear_bit(IPOIB_STOP_REAPER, &priv->flags);
|
|
|
|
queue_delayed_work(ipoib_workqueue, &priv->ah_reap_task, HZ);
|
|
|
|
|
2006-03-23 17:52:51 +00:00
|
|
|
set_bit(IPOIB_FLAG_INITIALIZED, &priv->flags);
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2006-03-23 17:52:51 +00:00
|
|
|
static void ipoib_pkey_dev_check_presence(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
u16 pkey_index = 0;
|
|
|
|
|
|
|
|
if (ib_find_cached_pkey(priv->ca, priv->port, priv->pkey, &pkey_index))
|
|
|
|
clear_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
|
|
|
|
else
|
|
|
|
set_bit(IPOIB_PKEY_ASSIGNED, &priv->flags);
|
|
|
|
}
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
int ipoib_ib_dev_up(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
|
2006-03-23 17:52:51 +00:00
|
|
|
ipoib_pkey_dev_check_presence(dev);
|
|
|
|
|
|
|
|
if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) {
|
|
|
|
ipoib_dbg(priv, "PKEY is not assigned.\n");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
set_bit(IPOIB_FLAG_OPER_UP, &priv->flags);
|
|
|
|
|
|
|
|
return ipoib_mcast_start_thread(dev);
|
|
|
|
}
|
|
|
|
|
2006-03-20 18:08:24 +00:00
|
|
|
int ipoib_ib_dev_down(struct net_device *dev, int flush)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
|
|
|
|
ipoib_dbg(priv, "downing ib_dev\n");
|
|
|
|
|
|
|
|
clear_bit(IPOIB_FLAG_OPER_UP, &priv->flags);
|
|
|
|
netif_carrier_off(dev);
|
|
|
|
|
|
|
|
/* Shutdown the P_Key thread if still active */
|
|
|
|
if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) {
|
2006-01-13 22:51:39 +00:00
|
|
|
mutex_lock(&pkey_mutex);
|
2005-04-16 22:20:36 +00:00
|
|
|
set_bit(IPOIB_PKEY_STOP, &priv->flags);
|
|
|
|
cancel_delayed_work(&priv->pkey_task);
|
2006-01-13 22:51:39 +00:00
|
|
|
mutex_unlock(&pkey_mutex);
|
2006-03-20 18:08:24 +00:00
|
|
|
if (flush)
|
|
|
|
flush_workqueue(ipoib_workqueue);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
2006-03-20 18:08:24 +00:00
|
|
|
ipoib_mcast_stop_thread(dev, flush);
|
2005-04-16 22:20:36 +00:00
|
|
|
ipoib_mcast_dev_flush(dev);
|
|
|
|
|
|
|
|
ipoib_flush_paths(dev);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int recvs_pending(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
int pending = 0;
|
|
|
|
int i;
|
|
|
|
|
2006-04-10 16:43:58 +00:00
|
|
|
for (i = 0; i < ipoib_recvq_size; ++i)
|
2005-04-16 22:20:36 +00:00
|
|
|
if (priv->rx_ring[i].skb)
|
|
|
|
++pending;
|
|
|
|
|
|
|
|
return pending;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ipoib_ib_dev_stop(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
struct ib_qp_attr qp_attr;
|
|
|
|
unsigned long begin;
|
2005-10-28 22:30:34 +00:00
|
|
|
struct ipoib_tx_buf *tx_req;
|
2007-05-07 04:05:32 +00:00
|
|
|
int i, n;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-03-23 17:52:51 +00:00
|
|
|
clear_bit(IPOIB_FLAG_INITIALIZED, &priv->flags);
|
2007-05-07 04:05:32 +00:00
|
|
|
netif_poll_disable(dev);
|
2006-03-23 17:52:51 +00:00
|
|
|
|
2007-02-05 20:12:23 +00:00
|
|
|
ipoib_cm_dev_stop(dev);
|
|
|
|
|
2005-10-30 21:20:09 +00:00
|
|
|
/*
|
|
|
|
* Move our QP to the error state and then reinitialize in
|
|
|
|
* when all work requests have completed or have been flushed.
|
|
|
|
*/
|
2005-04-16 22:20:36 +00:00
|
|
|
qp_attr.qp_state = IB_QPS_ERR;
|
2005-10-30 21:20:09 +00:00
|
|
|
if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE))
|
2005-04-16 22:20:36 +00:00
|
|
|
ipoib_warn(priv, "Failed to modify QP to ERROR state\n");
|
|
|
|
|
|
|
|
/* Wait for all sends and receives to complete */
|
|
|
|
begin = jiffies;
|
|
|
|
|
|
|
|
while (priv->tx_head != priv->tx_tail || recvs_pending(dev)) {
|
|
|
|
if (time_after(jiffies, begin + 5 * HZ)) {
|
|
|
|
ipoib_warn(priv, "timing out; %d sends %d receives not completed\n",
|
|
|
|
priv->tx_head - priv->tx_tail, recvs_pending(dev));
|
|
|
|
|
|
|
|
/*
|
|
|
|
* assume the HW is wedged and just free up
|
|
|
|
* all our pending work requests.
|
|
|
|
*/
|
2005-07-27 21:41:32 +00:00
|
|
|
while ((int) priv->tx_tail - (int) priv->tx_head < 0) {
|
2005-04-16 22:20:36 +00:00
|
|
|
tx_req = &priv->tx_ring[priv->tx_tail &
|
2006-04-10 16:43:58 +00:00
|
|
|
(ipoib_sendq_size - 1)];
|
2006-12-12 22:30:48 +00:00
|
|
|
ib_dma_unmap_single(priv->ca,
|
|
|
|
tx_req->mapping,
|
|
|
|
tx_req->skb->len,
|
|
|
|
DMA_TO_DEVICE);
|
2005-04-16 22:20:36 +00:00
|
|
|
dev_kfree_skb_any(tx_req->skb);
|
|
|
|
++priv->tx_tail;
|
|
|
|
}
|
|
|
|
|
2006-12-12 22:30:48 +00:00
|
|
|
for (i = 0; i < ipoib_recvq_size; ++i) {
|
|
|
|
struct ipoib_rx_buf *rx_req;
|
|
|
|
|
|
|
|
rx_req = &priv->rx_ring[i];
|
|
|
|
if (!rx_req->skb)
|
|
|
|
continue;
|
|
|
|
ib_dma_unmap_single(priv->ca,
|
|
|
|
rx_req->mapping,
|
|
|
|
IPOIB_BUF_SIZE,
|
|
|
|
DMA_FROM_DEVICE);
|
|
|
|
dev_kfree_skb_any(rx_req->skb);
|
|
|
|
rx_req->skb = NULL;
|
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
goto timeout;
|
|
|
|
}
|
|
|
|
|
2007-05-07 04:05:32 +00:00
|
|
|
do {
|
|
|
|
n = ib_poll_cq(priv->cq, IPOIB_NUM_WC, priv->ibwc);
|
|
|
|
for (i = 0; i < n; ++i) {
|
|
|
|
if (priv->ibwc[i].wr_id & IPOIB_CM_OP_SRQ)
|
|
|
|
ipoib_cm_handle_rx_wc(dev, priv->ibwc + i);
|
|
|
|
else if (priv->ibwc[i].wr_id & IPOIB_OP_RECV)
|
|
|
|
ipoib_ib_handle_rx_wc(dev, priv->ibwc + i);
|
|
|
|
else
|
|
|
|
ipoib_ib_handle_tx_wc(dev, priv->ibwc + i);
|
|
|
|
}
|
|
|
|
} while (n == IPOIB_NUM_WC);
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
msleep(1);
|
|
|
|
}
|
|
|
|
|
|
|
|
ipoib_dbg(priv, "All sends and receives done.\n");
|
|
|
|
|
|
|
|
timeout:
|
|
|
|
qp_attr.qp_state = IB_QPS_RESET;
|
2005-10-30 21:20:09 +00:00
|
|
|
if (ib_modify_qp(priv->qp, &qp_attr, IB_QP_STATE))
|
2005-04-16 22:20:36 +00:00
|
|
|
ipoib_warn(priv, "Failed to modify QP to RESET state\n");
|
|
|
|
|
|
|
|
/* Wait for all AHs to be reaped */
|
|
|
|
set_bit(IPOIB_STOP_REAPER, &priv->flags);
|
|
|
|
cancel_delayed_work(&priv->ah_reap_task);
|
|
|
|
flush_workqueue(ipoib_workqueue);
|
|
|
|
|
|
|
|
begin = jiffies;
|
|
|
|
|
|
|
|
while (!list_empty(&priv->dead_ahs)) {
|
|
|
|
__ipoib_reap_ah(dev);
|
|
|
|
|
|
|
|
if (time_after(jiffies, begin + HZ)) {
|
|
|
|
ipoib_warn(priv, "timing out; will leak address handles\n");
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
|
|
|
|
msleep(1);
|
|
|
|
}
|
|
|
|
|
2007-05-07 04:05:32 +00:00
|
|
|
netif_poll_enable(dev);
|
|
|
|
ib_req_notify_cq(priv->cq, IB_CQ_NEXT_COMP);
|
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
int ipoib_ib_dev_init(struct net_device *dev, struct ib_device *ca, int port)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
|
|
|
|
priv->ca = ca;
|
|
|
|
priv->port = port;
|
|
|
|
priv->qp = NULL;
|
|
|
|
|
|
|
|
if (ipoib_transport_dev_init(dev, ca)) {
|
|
|
|
printk(KERN_WARNING "%s: ipoib_transport_dev_init failed\n", ca->name);
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (dev->flags & IFF_UP) {
|
|
|
|
if (ipoib_ib_dev_open(dev)) {
|
|
|
|
ipoib_transport_dev_cleanup(dev);
|
|
|
|
return -ENODEV;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2006-11-22 14:57:56 +00:00
|
|
|
void ipoib_ib_dev_flush(struct work_struct *work)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-11-22 14:57:56 +00:00
|
|
|
struct ipoib_dev_priv *cpriv, *priv =
|
|
|
|
container_of(work, struct ipoib_dev_priv, flush_task);
|
|
|
|
struct net_device *dev = priv->dev;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-03-23 17:52:51 +00:00
|
|
|
if (!test_bit(IPOIB_FLAG_INITIALIZED, &priv->flags) ) {
|
|
|
|
ipoib_dbg(priv, "Not flushing - IPOIB_FLAG_INITIALIZED not set.\n");
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) {
|
|
|
|
ipoib_dbg(priv, "Not flushing - IPOIB_FLAG_ADMIN_UP not set.\n");
|
2005-04-16 22:20:36 +00:00
|
|
|
return;
|
2006-03-23 17:52:51 +00:00
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
ipoib_dbg(priv, "flushing\n");
|
|
|
|
|
2006-03-20 18:08:24 +00:00
|
|
|
ipoib_ib_dev_down(dev, 0);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* The device could have been brought down between the start and when
|
|
|
|
* we get here, don't bring it back up if it's not configured up
|
|
|
|
*/
|
2006-09-22 22:22:56 +00:00
|
|
|
if (test_bit(IPOIB_FLAG_ADMIN_UP, &priv->flags)) {
|
2005-04-16 22:20:36 +00:00
|
|
|
ipoib_ib_dev_up(dev);
|
2006-11-22 14:57:56 +00:00
|
|
|
ipoib_mcast_restart_task(&priv->restart_task);
|
2006-09-22 22:22:56 +00:00
|
|
|
}
|
2005-04-16 22:20:36 +00:00
|
|
|
|
2006-01-13 22:51:39 +00:00
|
|
|
mutex_lock(&priv->vlan_mutex);
|
2005-11-29 18:53:30 +00:00
|
|
|
|
2005-04-16 22:20:36 +00:00
|
|
|
/* Flush any child interfaces too */
|
|
|
|
list_for_each_entry(cpriv, &priv->child_intfs, list)
|
2006-11-22 14:57:56 +00:00
|
|
|
ipoib_ib_dev_flush(&cpriv->flush_task);
|
2005-11-29 18:53:30 +00:00
|
|
|
|
2006-01-13 22:51:39 +00:00
|
|
|
mutex_unlock(&priv->vlan_mutex);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
void ipoib_ib_dev_cleanup(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
|
|
|
|
ipoib_dbg(priv, "cleaning up ib_dev\n");
|
|
|
|
|
2005-09-20 17:52:04 +00:00
|
|
|
ipoib_mcast_stop_thread(dev, 1);
|
2006-01-12 22:32:20 +00:00
|
|
|
ipoib_mcast_dev_flush(dev);
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
ipoib_transport_dev_cleanup(dev);
|
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Delayed P_Key Assigment Interim Support
|
|
|
|
*
|
|
|
|
* The following is initial implementation of delayed P_Key assigment
|
|
|
|
* mechanism. It is using the same approach implemented for the multicast
|
|
|
|
* group join. The single goal of this implementation is to quickly address
|
|
|
|
* Bug #2507. This implementation will probably be removed when the P_Key
|
|
|
|
* change async notification is available.
|
|
|
|
*/
|
|
|
|
|
2006-11-22 14:57:56 +00:00
|
|
|
void ipoib_pkey_poll(struct work_struct *work)
|
2005-04-16 22:20:36 +00:00
|
|
|
{
|
2006-11-22 14:57:56 +00:00
|
|
|
struct ipoib_dev_priv *priv =
|
|
|
|
container_of(work, struct ipoib_dev_priv, pkey_task.work);
|
|
|
|
struct net_device *dev = priv->dev;
|
2005-04-16 22:20:36 +00:00
|
|
|
|
|
|
|
ipoib_pkey_dev_check_presence(dev);
|
|
|
|
|
|
|
|
if (test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags))
|
|
|
|
ipoib_open(dev);
|
|
|
|
else {
|
2006-01-13 22:51:39 +00:00
|
|
|
mutex_lock(&pkey_mutex);
|
2005-04-16 22:20:36 +00:00
|
|
|
if (!test_bit(IPOIB_PKEY_STOP, &priv->flags))
|
|
|
|
queue_delayed_work(ipoib_workqueue,
|
|
|
|
&priv->pkey_task,
|
|
|
|
HZ);
|
2006-01-13 22:51:39 +00:00
|
|
|
mutex_unlock(&pkey_mutex);
|
2005-04-16 22:20:36 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
int ipoib_pkey_dev_delay_open(struct net_device *dev)
|
|
|
|
{
|
|
|
|
struct ipoib_dev_priv *priv = netdev_priv(dev);
|
|
|
|
|
|
|
|
/* Look for the interface pkey value in the IB Port P_Key table and */
|
|
|
|
/* set the interface pkey assigment flag */
|
|
|
|
ipoib_pkey_dev_check_presence(dev);
|
|
|
|
|
|
|
|
/* P_Key value not assigned yet - start polling */
|
|
|
|
if (!test_bit(IPOIB_PKEY_ASSIGNED, &priv->flags)) {
|
2006-01-13 22:51:39 +00:00
|
|
|
mutex_lock(&pkey_mutex);
|
2005-04-16 22:20:36 +00:00
|
|
|
clear_bit(IPOIB_PKEY_STOP, &priv->flags);
|
|
|
|
queue_delayed_work(ipoib_workqueue,
|
|
|
|
&priv->pkey_task,
|
|
|
|
HZ);
|
2006-01-13 22:51:39 +00:00
|
|
|
mutex_unlock(&pkey_mutex);
|
2005-04-16 22:20:36 +00:00
|
|
|
return 1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|