Cap the maximum number of address handles.
Signed-off-by: Bryan O'Sullivan <[EMAIL PROTECTED]>
diff -r def81ab50644 -r e823378bd19c drivers/infiniband/hw/ipath/ipath_verbs.c
--- a/drivers/infiniband/hw/ipath/ipath_verbs.c Fri May 12 15:55:27 2006 -0700
+++ b/drivers/infiniband/hw/ipath/ipath_verbs.c Fri May 12 15:55:27 2006 -0700
@@ -59,6 +59,11 @@ module_param_named(max_pds, ib_ipath_max
module_param_named(max_pds, ib_ipath_max_pds, uint, S_IWUSR | S_IRUGO);
MODULE_PARM_DESC(max_pds,
"Maximum number of protection domains to support");
+
+static unsigned int ib_ipath_max_ahs = 0xFFFF;
+module_param_named(max_ahs, ib_ipath_max_ahs, uint, S_IWUSR | S_IRUGO);
+MODULE_PARM_DESC(max_ahs,
+ "Maximum number of address handles to support");
MODULE_LICENSE("GPL");
MODULE_AUTHOR("PathScale <[EMAIL PROTECTED]>");
@@ -592,6 +597,7 @@ static int ipath_query_device(struct ib_
props->max_qp_wr = 0xffff;
props->max_sge = 255;
props->max_cq = 0xffff;
+ props->max_ah = ib_ipath_max_ahs;
props->max_cqe = 0xffff;
props->max_mr = dev->lk_table.max;
props->max_pd = ib_ipath_max_pds;
@@ -764,13 +770,13 @@ static struct ib_pd *ipath_alloc_pd(stru
goto bail;
}
- dev->n_pds_allocated++;
-
pd = kmalloc(sizeof *pd, GFP_KERNEL);
if (!pd) {
ret = ERR_PTR(-ENOMEM);
goto bail;
}
+
+ dev->n_pds_allocated++;
/* ib_alloc_pd() will initialize pd->ibpd. */
pd->user = udata != NULL;
@@ -805,6 +811,12 @@ static struct ib_ah *ipath_create_ah(str
{
struct ipath_ah *ah;
struct ib_ah *ret;
+ struct ipath_ibdev *dev = to_idev(pd->device);
+
+ if (dev->n_ahs_allocated == ib_ipath_max_ahs) {
+ ret = ERR_PTR(-ENOMEM);
+ goto bail;
+ }
/* A multicast address requires a GRH (see ch. 8.4.1). */
if (ah_attr->dlid >= IPS_MULTICAST_LID_BASE &&
@@ -848,7 +860,10 @@ bail:
*/
static int ipath_destroy_ah(struct ib_ah *ibah)
{
+ struct ipath_ibdev *dev = to_idev(ibah->device);
struct ipath_ah *ah = to_iah(ibah);
+
+ dev->n_ahs_allocated--;
kfree(ah);
diff -r def81ab50644 -r e823378bd19c drivers/infiniband/hw/ipath/ipath_verbs.h
--- a/drivers/infiniband/hw/ipath/ipath_verbs.h Fri May 12 15:55:27 2006 -0700
+++ b/drivers/infiniband/hw/ipath/ipath_verbs.h Fri May 12 15:55:27 2006 -0700
@@ -432,6 +432,7 @@ struct ipath_ibdev {
__be64 gid_prefix; /* in network order */
__be64 mkey;
u32 n_pds_allocated; /* number of PDs allocated for device */
+ u32 n_ahs_allocated; /* number of AHs allocated for device */
u64 ipath_sword; /* total dwords sent (sample result) */
u64 ipath_rword; /* total dwords received (sample result) */
u64 ipath_spkts; /* total packets sent (sample result) */
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