Make the max IB mcast sizes configurable.
Signed-off-by: Bryan O'Sullivan <[email protected]>
diff -r c5f3731224bb -r df954e47ff67 drivers/infiniband/hw/ipath/ipath_verbs.c
--- a/drivers/infiniband/hw/ipath/ipath_verbs.c Fri May 12 15:55:28 2006 -0700
+++ b/drivers/infiniband/hw/ipath/ipath_verbs.c Fri May 12 15:55:28 2006 -0700
@@ -81,6 +81,32 @@ unsigned int ib_ipath_max_sges = 0xFF;
unsigned int ib_ipath_max_sges = 0xFF;
module_param_named(max_sges, ib_ipath_max_sges, uint, S_IWUSR | S_IRUGO);
MODULE_PARM_DESC(max_sges, "Maximum number of SGEs to support");
+
+unsigned int ib_ipath_max_mcast_grps = 16384;
+module_param_named(max_mcast_grps, ib_ipath_max_mcast_grps, uint,
+ S_IWUSR | S_IRUGO);
+MODULE_PARM_DESC(max_mcast_grps,
+ "Maximum number of multicast groups to support");
+
+unsigned int ib_ipath_max_mcast_qp_attached = 16;
+module_param_named(max_mcast_qp_attached, ib_ipath_max_mcast_qp_attached,
+ uint, S_IWUSR | S_IRUGO);
+MODULE_PARM_DESC(max_mcast_qp_attached,
+ "Maximum number of attached QPs to support");
+
+unsigned int ib_ipath_max_srqs = 1024;
+module_param_named(max_srqs, ib_ipath_max_srqs, uint, S_IWUSR | S_IRUGO);
+MODULE_PARM_DESC(max_srqs, "Maximum number of SRQs to support");
+
+unsigned int ib_ipath_max_srq_sges = 128;
+module_param_named(max_srq_sges, ib_ipath_max_srq_sges,
+ uint, S_IWUSR | S_IRUGO);
+MODULE_PARM_DESC(max_srq_sges, "Maximum number of SRQ SGEs to support");
+
+unsigned int ib_ipath_max_srq_wrs = 0x1FFFF;
+module_param_named(max_srq_wrs, ib_ipath_max_srq_wrs,
+ uint, S_IWUSR | S_IRUGO);
+MODULE_PARM_DESC(max_srq_wrs, "Maximum number of SRQ WRs support");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("PathScale <[email protected]>");
@@ -621,14 +647,14 @@ static int ipath_query_device(struct ib_
props->max_qp_rd_atom = 1;
props->max_qp_init_rd_atom = 1;
/* props->max_res_rd_atom */
- props->max_srq = 0xffff;
- props->max_srq_wr = 0xffff;
- props->max_srq_sge = 255;
+ props->max_srq = ib_ipath_max_srqs;
+ props->max_srq_wr = ib_ipath_max_srq_wrs;
+ props->max_srq_sge = ib_ipath_max_srq_sges;
/* props->local_ca_ack_delay */
props->atomic_cap = IB_ATOMIC_HCA;
props->max_pkeys = ipath_layer_get_npkeys(dev->dd);
- props->max_mcast_grp = 0xffff;
- props->max_mcast_qp_attach = 0xffff;
+ props->max_mcast_grp = ib_ipath_max_mcast_grps;
+ props->max_mcast_qp_attach = ib_ipath_max_mcast_qp_attached;
props->max_total_mcast_qp_attach = props->max_mcast_qp_attach *
props->max_mcast_grp;
diff -r c5f3731224bb -r df954e47ff67 drivers/infiniband/hw/ipath/ipath_verbs.h
--- a/drivers/infiniband/hw/ipath/ipath_verbs.h Fri May 12 15:55:28 2006 -0700
+++ b/drivers/infiniband/hw/ipath/ipath_verbs.h Fri May 12 15:55:28 2006 -0700
@@ -148,6 +148,7 @@ struct ipath_mcast {
struct list_head qp_list;
wait_queue_head_t wait;
atomic_t refcount;
+ int n_attached;
};
/* Memory region */
@@ -434,6 +435,7 @@ struct ipath_ibdev {
u32 n_pds_allocated; /* number of PDs allocated for device */
u32 n_ahs_allocated; /* number of AHs allocated for device */
u32 n_cqs_allocated; /* number of CQs allocated for device */
+ u32 n_mcast_grps_allocated; /* number of mcast groups allocated */
u64 ipath_sword; /* total dwords sent (sample result) */
u64 ipath_rword; /* total dwords received (sample result) */
u64 ipath_spkts; /* total packets sent (sample result) */
@@ -699,6 +701,16 @@ extern unsigned int ib_ipath_max_qp_wrs;
extern unsigned int ib_ipath_max_sges;
+extern unsigned int ib_ipath_max_mcast_grps;
+
+extern unsigned int ib_ipath_max_mcast_qp_attached;
+
+extern unsigned int ib_ipath_max_srqs;
+
+extern unsigned int ib_ipath_max_srq_sges;
+
+extern unsigned int ib_ipath_max_srq_wrs;
+
extern const u32 ib_ipath_rnr_table[];
#endif /* IPATH_VERBS_H */
diff -r c5f3731224bb -r df954e47ff67 drivers/infiniband/hw/ipath/ipath_verbs_mcast.c
--- a/drivers/infiniband/hw/ipath/ipath_verbs_mcast.c Fri May 12 15:55:28 2006 -0700
+++ b/drivers/infiniband/hw/ipath/ipath_verbs_mcast.c Fri May 12 15:55:28 2006 -0700
@@ -92,6 +92,7 @@ static struct ipath_mcast *ipath_mcast_a
INIT_LIST_HEAD(&mcast->qp_list);
init_waitqueue_head(&mcast->wait);
atomic_set(&mcast->refcount, 0);
+ mcast->n_attached = 0;
bail:
return mcast;
@@ -157,7 +158,8 @@ bail:
* the table but the QP was added. Return ESRCH if the QP was already
* attached and neither structure was added.
*/
-static int ipath_mcast_add(struct ipath_mcast *mcast,
+static int ipath_mcast_add(struct ipath_ibdev *dev,
+ struct ipath_mcast *mcast,
struct ipath_mcast_qp *mqp)
{
struct rb_node **n = &mcast_tree.rb_node;
@@ -188,16 +190,28 @@ static int ipath_mcast_add(struct ipath_
/* Search the QP list to see if this is already there. */
list_for_each_entry_rcu(p, &tmcast->qp_list, list) {
if (p->qp == mqp->qp) {
- spin_unlock_irqrestore(&mcast_lock, flags);
ret = ESRCH;
goto bail;
}
}
+ if (tmcast->n_attached == ib_ipath_max_mcast_qp_attached) {
+ ret = ENOMEM;
+ goto bail;
+ }
+
+ tmcast->n_attached++;
+
list_add_tail_rcu(&mqp->list, &tmcast->qp_list);
- spin_unlock_irqrestore(&mcast_lock, flags);
ret = EEXIST;
goto bail;
}
+
+ if (dev->n_mcast_grps_allocated == ib_ipath_max_mcast_grps) {
+ ret = ENOMEM;
+ goto bail;
+ }
+
+ dev->n_mcast_grps_allocated++;
list_add_tail_rcu(&mqp->list, &mcast->qp_list);
@@ -205,17 +219,18 @@ static int ipath_mcast_add(struct ipath_
rb_link_node(&mcast->rb_node, pn, n);
rb_insert_color(&mcast->rb_node, &mcast_tree);
+ ret = 0;
+
+bail:
spin_unlock_irqrestore(&mcast_lock, flags);
- ret = 0;
-
-bail:
return ret;
}
int ipath_multicast_attach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
{
struct ipath_qp *qp = to_iqp(ibqp);
+ struct ipath_ibdev *dev = to_idev(ibqp->device);
struct ipath_mcast *mcast;
struct ipath_mcast_qp *mqp;
int ret;
@@ -235,7 +250,7 @@ int ipath_multicast_attach(struct ib_qp
ret = -ENOMEM;
goto bail;
}
- switch (ipath_mcast_add(mcast, mqp)) {
+ switch (ipath_mcast_add(dev, mcast, mqp)) {
case ESRCH:
/* Neither was used: can't attach the same QP twice. */
ipath_mcast_qp_free(mqp);
@@ -245,6 +260,12 @@ int ipath_multicast_attach(struct ib_qp
case EEXIST: /* The mcast wasn't used */
ipath_mcast_free(mcast);
break;
+ case ENOMEM:
+ /* Exceeded the maximum number of mcast groups. */
+ ipath_mcast_qp_free(mqp);
+ ipath_mcast_free(mcast);
+ ret = -ENOMEM;
+ goto bail;
default:
break;
}
@@ -258,6 +279,7 @@ int ipath_multicast_detach(struct ib_qp
int ipath_multicast_detach(struct ib_qp *ibqp, union ib_gid *gid, u16 lid)
{
struct ipath_qp *qp = to_iqp(ibqp);
+ struct ipath_ibdev *dev = to_idev(ibqp->device);
struct ipath_mcast *mcast = NULL;
struct ipath_mcast_qp *p, *tmp;
struct rb_node *n;
@@ -296,6 +318,7 @@ int ipath_multicast_detach(struct ib_qp
* link until we are sure there are no list walkers.
*/
list_del_rcu(&p->list);
+ mcast->n_attached--;
/* If this was the last attached QP, remove the GID too. */
if (list_empty(&mcast->qp_list)) {
@@ -319,6 +342,7 @@ int ipath_multicast_detach(struct ib_qp
atomic_dec(&mcast->refcount);
wait_event(mcast->wait, !atomic_read(&mcast->refcount));
ipath_mcast_free(mcast);
+ dev->n_mcast_grps_allocated--;
}
ret = 0;
-
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