MAINTAINERS: Add cxgb4 and iw_cxgb4 entries
Signed-off-by: Roland Dreier <rolandd@cisco.com>
diff --git a/drivers/infiniband/hw/cxgb4/cm.c b/drivers/infiniband/hw/cxgb4/cm.c
index 07b068b..30ce0a8 100644
--- a/drivers/infiniband/hw/cxgb4/cm.c
+++ b/drivers/infiniband/hw/cxgb4/cm.c
@@ -61,6 +61,10 @@
NULL,
};
+int c4iw_max_read_depth = 8;
+module_param(c4iw_max_read_depth, int, 0644);
+MODULE_PARM_DESC(c4iw_max_read_depth, "Per-connection max ORD/IRD (default=8)");
+
static int enable_tcp_timestamps;
module_param(enable_tcp_timestamps, int, 0644);
MODULE_PARM_DESC(enable_tcp_timestamps, "Enable tcp timestamps (default=0)");
@@ -113,18 +117,17 @@
module_param(snd_win, int, 0644);
MODULE_PARM_DESC(snd_win, "TCP send window in bytes (default=32KB)");
-static void process_work(struct work_struct *work);
static struct workqueue_struct *workq;
-static DECLARE_WORK(skb_work, process_work);
static struct sk_buff_head rxq;
-static c4iw_handler_func work_handlers[NUM_CPL_CMDS];
-c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS];
static struct sk_buff *get_skb(struct sk_buff *skb, int len, gfp_t gfp);
static void ep_timeout(unsigned long arg);
static void connect_reply_upcall(struct c4iw_ep *ep, int status);
+static LIST_HEAD(timeout_list);
+static spinlock_t timeout_lock;
+
static void start_ep_timer(struct c4iw_ep *ep)
{
PDBG("%s ep %p\n", __func__, ep);
@@ -271,26 +274,6 @@
c4iw_put_ep(&ep->com);
}
-static void process_work(struct work_struct *work)
-{
- struct sk_buff *skb = NULL;
- struct c4iw_dev *dev;
- struct cpl_act_establish *rpl = cplhdr(skb);
- unsigned int opcode;
- int ret;
-
- while ((skb = skb_dequeue(&rxq))) {
- rpl = cplhdr(skb);
- dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
- opcode = rpl->ot.opcode;
-
- BUG_ON(!work_handlers[opcode]);
- ret = work_handlers[opcode](dev, skb);
- if (!ret)
- kfree_skb(skb);
- }
-}
-
static int status2errno(int status)
{
switch (status) {
@@ -1795,76 +1778,6 @@
return 0;
}
-static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
-{
- struct cpl_fw6_msg *rpl = cplhdr(skb);
- struct c4iw_wr_wait *wr_waitp;
- int ret;
-
- PDBG("%s type %u\n", __func__, rpl->type);
-
- switch (rpl->type) {
- case 1:
- ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff);
- wr_waitp = (__force struct c4iw_wr_wait *)rpl->data[1];
- PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret);
- if (wr_waitp) {
- wr_waitp->ret = ret;
- wr_waitp->done = 1;
- wake_up(&wr_waitp->wait);
- }
- break;
- case 2:
- c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]);
- break;
- default:
- printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__,
- rpl->type);
- break;
- }
- return 0;
-}
-
-static void ep_timeout(unsigned long arg)
-{
- struct c4iw_ep *ep = (struct c4iw_ep *)arg;
- struct c4iw_qp_attributes attrs;
- unsigned long flags;
- int abort = 1;
-
- spin_lock_irqsave(&ep->com.lock, flags);
- PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid,
- ep->com.state);
- switch (ep->com.state) {
- case MPA_REQ_SENT:
- __state_set(&ep->com, ABORTING);
- connect_reply_upcall(ep, -ETIMEDOUT);
- break;
- case MPA_REQ_WAIT:
- __state_set(&ep->com, ABORTING);
- break;
- case CLOSING:
- case MORIBUND:
- if (ep->com.cm_id && ep->com.qp) {
- attrs.next_state = C4IW_QP_STATE_ERROR;
- c4iw_modify_qp(ep->com.qp->rhp,
- ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
- &attrs, 1);
- }
- __state_set(&ep->com, ABORTING);
- break;
- default:
- printk(KERN_ERR "%s unexpected state ep %p tid %u state %u\n",
- __func__, ep, ep->hwtid, ep->com.state);
- WARN_ON(1);
- abort = 0;
- }
- spin_unlock_irqrestore(&ep->com.lock, flags);
- if (abort)
- abort_connection(ep, NULL, GFP_ATOMIC);
- c4iw_put_ep(&ep->com);
-}
-
int c4iw_reject_cr(struct iw_cm_id *cm_id, const void *pdata, u8 pdata_len)
{
int err;
@@ -1904,8 +1817,8 @@
BUG_ON(state_read(&ep->com) != MPA_REQ_RCVD);
BUG_ON(!qp);
- if ((conn_param->ord > T4_MAX_READ_DEPTH) ||
- (conn_param->ird > T4_MAX_READ_DEPTH)) {
+ if ((conn_param->ord > c4iw_max_read_depth) ||
+ (conn_param->ird > c4iw_max_read_depth)) {
abort_connection(ep, NULL, GFP_KERNEL);
err = -EINVAL;
goto err;
@@ -1968,6 +1881,11 @@
struct net_device *pdev;
int step;
+ if ((conn_param->ord > c4iw_max_read_depth) ||
+ (conn_param->ird > c4iw_max_read_depth)) {
+ err = -EINVAL;
+ goto out;
+ }
ep = alloc_ep(sizeof(*ep), GFP_KERNEL);
if (!ep) {
printk(KERN_ERR MOD "%s - cannot alloc ep.\n", __func__);
@@ -2115,7 +2033,7 @@
*/
ep->stid = cxgb4_alloc_stid(dev->rdev.lldi.tids, PF_INET, ep);
if (ep->stid == -1) {
- printk(KERN_ERR MOD "%s - cannot alloc atid.\n", __func__);
+ printk(KERN_ERR MOD "%s - cannot alloc stid.\n", __func__);
err = -ENOMEM;
goto fail2;
}
@@ -2244,6 +2162,116 @@
}
/*
+ * These are the real handlers that are called from a
+ * work queue.
+ */
+static c4iw_handler_func work_handlers[NUM_CPL_CMDS] = {
+ [CPL_ACT_ESTABLISH] = act_establish,
+ [CPL_ACT_OPEN_RPL] = act_open_rpl,
+ [CPL_RX_DATA] = rx_data,
+ [CPL_ABORT_RPL_RSS] = abort_rpl,
+ [CPL_ABORT_RPL] = abort_rpl,
+ [CPL_PASS_OPEN_RPL] = pass_open_rpl,
+ [CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl,
+ [CPL_PASS_ACCEPT_REQ] = pass_accept_req,
+ [CPL_PASS_ESTABLISH] = pass_establish,
+ [CPL_PEER_CLOSE] = peer_close,
+ [CPL_ABORT_REQ_RSS] = peer_abort,
+ [CPL_CLOSE_CON_RPL] = close_con_rpl,
+ [CPL_RDMA_TERMINATE] = terminate,
+ [CPL_FW4_ACK] = fw4_ack
+};
+
+static void process_timeout(struct c4iw_ep *ep)
+{
+ struct c4iw_qp_attributes attrs;
+ int abort = 1;
+
+ spin_lock_irq(&ep->com.lock);
+ PDBG("%s ep %p tid %u state %d\n", __func__, ep, ep->hwtid,
+ ep->com.state);
+ switch (ep->com.state) {
+ case MPA_REQ_SENT:
+ __state_set(&ep->com, ABORTING);
+ connect_reply_upcall(ep, -ETIMEDOUT);
+ break;
+ case MPA_REQ_WAIT:
+ __state_set(&ep->com, ABORTING);
+ break;
+ case CLOSING:
+ case MORIBUND:
+ if (ep->com.cm_id && ep->com.qp) {
+ attrs.next_state = C4IW_QP_STATE_ERROR;
+ c4iw_modify_qp(ep->com.qp->rhp,
+ ep->com.qp, C4IW_QP_ATTR_NEXT_STATE,
+ &attrs, 1);
+ }
+ __state_set(&ep->com, ABORTING);
+ break;
+ default:
+ printk(KERN_ERR "%s unexpected state ep %p tid %u state %u\n",
+ __func__, ep, ep->hwtid, ep->com.state);
+ WARN_ON(1);
+ abort = 0;
+ }
+ spin_unlock_irq(&ep->com.lock);
+ if (abort)
+ abort_connection(ep, NULL, GFP_KERNEL);
+ c4iw_put_ep(&ep->com);
+}
+
+static void process_timedout_eps(void)
+{
+ struct c4iw_ep *ep;
+
+ spin_lock_irq(&timeout_lock);
+ while (!list_empty(&timeout_list)) {
+ struct list_head *tmp;
+
+ tmp = timeout_list.next;
+ list_del(tmp);
+ spin_unlock_irq(&timeout_lock);
+ ep = list_entry(tmp, struct c4iw_ep, entry);
+ process_timeout(ep);
+ spin_lock_irq(&timeout_lock);
+ }
+ spin_unlock_irq(&timeout_lock);
+}
+
+static void process_work(struct work_struct *work)
+{
+ struct sk_buff *skb = NULL;
+ struct c4iw_dev *dev;
+ struct cpl_act_establish *rpl = cplhdr(skb);
+ unsigned int opcode;
+ int ret;
+
+ while ((skb = skb_dequeue(&rxq))) {
+ rpl = cplhdr(skb);
+ dev = *((struct c4iw_dev **) (skb->cb + sizeof(void *)));
+ opcode = rpl->ot.opcode;
+
+ BUG_ON(!work_handlers[opcode]);
+ ret = work_handlers[opcode](dev, skb);
+ if (!ret)
+ kfree_skb(skb);
+ }
+ process_timedout_eps();
+}
+
+static DECLARE_WORK(skb_work, process_work);
+
+static void ep_timeout(unsigned long arg)
+{
+ struct c4iw_ep *ep = (struct c4iw_ep *)arg;
+
+ spin_lock(&timeout_lock);
+ list_add_tail(&ep->entry, &timeout_list);
+ spin_unlock(&timeout_lock);
+ queue_work(workq, &skb_work);
+}
+
+/*
* All the CM events are handled on a work queue to have a safe context.
*/
static int sched(struct c4iw_dev *dev, struct sk_buff *skb)
@@ -2273,58 +2301,74 @@
return 0;
}
+static int fw6_msg(struct c4iw_dev *dev, struct sk_buff *skb)
+{
+ struct cpl_fw6_msg *rpl = cplhdr(skb);
+ struct c4iw_wr_wait *wr_waitp;
+ int ret;
+
+ PDBG("%s type %u\n", __func__, rpl->type);
+
+ switch (rpl->type) {
+ case 1:
+ ret = (int)((be64_to_cpu(rpl->data[0]) >> 8) & 0xff);
+ wr_waitp = (__force struct c4iw_wr_wait *)rpl->data[1];
+ PDBG("%s wr_waitp %p ret %u\n", __func__, wr_waitp, ret);
+ if (wr_waitp) {
+ wr_waitp->ret = ret;
+ wr_waitp->done = 1;
+ wake_up(&wr_waitp->wait);
+ }
+ break;
+ case 2:
+ c4iw_ev_dispatch(dev, (struct t4_cqe *)&rpl->data[0]);
+ break;
+ default:
+ printk(KERN_ERR MOD "%s unexpected fw6 msg type %u\n", __func__,
+ rpl->type);
+ break;
+ }
+ return 0;
+}
+
+/*
+ * Most upcalls from the T4 Core go to sched() to
+ * schedule the processing on a work queue.
+ */
+c4iw_handler_func c4iw_handlers[NUM_CPL_CMDS] = {
+ [CPL_ACT_ESTABLISH] = sched,
+ [CPL_ACT_OPEN_RPL] = sched,
+ [CPL_RX_DATA] = sched,
+ [CPL_ABORT_RPL_RSS] = sched,
+ [CPL_ABORT_RPL] = sched,
+ [CPL_PASS_OPEN_RPL] = sched,
+ [CPL_CLOSE_LISTSRV_RPL] = sched,
+ [CPL_PASS_ACCEPT_REQ] = sched,
+ [CPL_PASS_ESTABLISH] = sched,
+ [CPL_PEER_CLOSE] = sched,
+ [CPL_CLOSE_CON_RPL] = sched,
+ [CPL_ABORT_REQ_RSS] = sched,
+ [CPL_RDMA_TERMINATE] = sched,
+ [CPL_FW4_ACK] = sched,
+ [CPL_SET_TCB_RPL] = set_tcb_rpl,
+ [CPL_FW6_MSG] = fw6_msg
+};
+
int __init c4iw_cm_init(void)
{
+ spin_lock_init(&timeout_lock);
skb_queue_head_init(&rxq);
workq = create_singlethread_workqueue("iw_cxgb4");
if (!workq)
return -ENOMEM;
- /*
- * Most upcalls from the T4 Core go to sched() to
- * schedule the processing on a work queue.
- */
- c4iw_handlers[CPL_ACT_ESTABLISH] = sched;
- c4iw_handlers[CPL_ACT_OPEN_RPL] = sched;
- c4iw_handlers[CPL_RX_DATA] = sched;
- c4iw_handlers[CPL_ABORT_RPL_RSS] = sched;
- c4iw_handlers[CPL_ABORT_RPL] = sched;
- c4iw_handlers[CPL_PASS_OPEN_RPL] = sched;
- c4iw_handlers[CPL_CLOSE_LISTSRV_RPL] = sched;
- c4iw_handlers[CPL_PASS_ACCEPT_REQ] = sched;
- c4iw_handlers[CPL_PASS_ESTABLISH] = sched;
- c4iw_handlers[CPL_PEER_CLOSE] = sched;
- c4iw_handlers[CPL_CLOSE_CON_RPL] = sched;
- c4iw_handlers[CPL_ABORT_REQ_RSS] = sched;
- c4iw_handlers[CPL_RDMA_TERMINATE] = sched;
- c4iw_handlers[CPL_FW4_ACK] = sched;
- c4iw_handlers[CPL_SET_TCB_RPL] = set_tcb_rpl;
- c4iw_handlers[CPL_FW6_MSG] = fw6_msg;
-
- /*
- * These are the real handlers that are called from a
- * work queue.
- */
- work_handlers[CPL_ACT_ESTABLISH] = act_establish;
- work_handlers[CPL_ACT_OPEN_RPL] = act_open_rpl;
- work_handlers[CPL_RX_DATA] = rx_data;
- work_handlers[CPL_ABORT_RPL_RSS] = abort_rpl;
- work_handlers[CPL_ABORT_RPL] = abort_rpl;
- work_handlers[CPL_PASS_OPEN_RPL] = pass_open_rpl;
- work_handlers[CPL_CLOSE_LISTSRV_RPL] = close_listsrv_rpl;
- work_handlers[CPL_PASS_ACCEPT_REQ] = pass_accept_req;
- work_handlers[CPL_PASS_ESTABLISH] = pass_establish;
- work_handlers[CPL_PEER_CLOSE] = peer_close;
- work_handlers[CPL_ABORT_REQ_RSS] = peer_abort;
- work_handlers[CPL_CLOSE_CON_RPL] = close_con_rpl;
- work_handlers[CPL_RDMA_TERMINATE] = terminate;
- work_handlers[CPL_FW4_ACK] = fw4_ack;
return 0;
}
void __exit c4iw_cm_term(void)
{
+ WARN_ON(!list_empty(&timeout_list));
flush_workqueue(workq);
destroy_workqueue(workq);
}