X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Finfiniband%2Fhw%2Fcxgb3%2Fiwch_provider.c;h=2e2741307af4be4114df4545a2fb5676f360c8ea;hb=b955150ea784;hp=fca0b4b747e4e5aedfb7668a74bb40fafdad9ff2;hpb=63a6440326e4cd01d6a663069208a0e68e9b833f;p=pandora-kernel.git

diff --git a/drivers/infiniband/hw/cxgb3/iwch_provider.c b/drivers/infiniband/hw/cxgb3/iwch_provider.c
index fca0b4b747e4..2e2741307af4 100644
--- a/drivers/infiniband/hw/cxgb3/iwch_provider.c
+++ b/drivers/infiniband/hw/cxgb3/iwch_provider.c
@@ -154,6 +154,8 @@ static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int ve
 	struct iwch_create_cq_resp uresp;
 	struct iwch_create_cq_req ureq;
 	struct iwch_ucontext *ucontext = NULL;
+	static int warned;
+	size_t resplen;
 
 	PDBG("%s ib_dev %p entries %d\n", __func__, ibdev, entries);
 	rhp = to_iwch_dev(ibdev);
@@ -217,15 +219,26 @@ static struct ib_cq *iwch_create_cq(struct ib_device *ibdev, int entries, int ve
 		uresp.key = ucontext->key;
 		ucontext->key += PAGE_SIZE;
 		spin_unlock(&ucontext->mmap_lock);
-		if (ib_copy_to_udata(udata, &uresp, sizeof (uresp))) {
+		mm->key = uresp.key;
+		mm->addr = virt_to_phys(chp->cq.queue);
+		if (udata->outlen < sizeof uresp) {
+			if (!warned++)
+				printk(KERN_WARNING MOD "Warning - "
+				       "downlevel libcxgb3 (non-fatal).\n");
+			mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
+					     sizeof(struct t3_cqe));
+			resplen = sizeof(struct iwch_create_cq_resp_v0);
+		} else {
+			mm->len = PAGE_ALIGN(((1UL << uresp.size_log2) + 1) *
+					     sizeof(struct t3_cqe));
+			uresp.memsize = mm->len;
+			resplen = sizeof uresp;
+		}
+		if (ib_copy_to_udata(udata, &uresp, resplen)) {
 			kfree(mm);
 			iwch_destroy_cq(&chp->ibcq);
 			return ERR_PTR(-EFAULT);
 		}
-		mm->key = uresp.key;
-		mm->addr = virt_to_phys(chp->cq.queue);
-		mm->len = PAGE_ALIGN((1UL << uresp.size_log2) *
-					     sizeof (struct t3_cqe));
 		insert_mmap(ucontext, mm);
 	}
 	PDBG("created cqid 0x%0x chp %p size 0x%0x, dma_addr 0x%0llx\n",
@@ -1414,6 +1427,7 @@ int iwch_register_device(struct iwch_dev *dev)
 	dev->ibdev.post_send = iwch_post_send;
 	dev->ibdev.post_recv = iwch_post_receive;
 	dev->ibdev.get_protocol_stats = iwch_get_mib;
+	dev->ibdev.uverbs_abi_ver = IWCH_UVERBS_ABI_VERSION;
 
 	dev->ibdev.iwcm = kmalloc(sizeof(struct iw_cm_verbs), GFP_KERNEL);
 	if (!dev->ibdev.iwcm)