net/memif: enable loopback

[dpdk.git] / kernel / linux / kni / kni_misc.c

diff --git a/kernel/linux/kni/kni_misc.c b/kernel/linux/kni/kni_misc.c
index 84ef03b..2b464c4 100644 (file)
--- a/kernel/linux/kni/kni_misc.c
+++ b/kernel/linux/kni/kni_misc.c
@@ -39,7 +39,7 @@ static uint32_t multiple_kthread_on;
 
 /* Default carrier state for created KNI network interfaces */
 static char *carrier;
-uint32_t dflt_carrier;
+uint32_t kni_dflt_carrier;
 
 #define KNI_DEV_IN_USE_BIT_NUM 0 /* Bit number for device in use */
 
@@ -348,15 +348,36 @@ kni_ioctl_create(struct net *net, uint32_t ioctl_num,
        strncpy(kni->name, dev_info.name, RTE_KNI_NAMESIZE);
 
        /* Translate user space info into kernel space info */
-       kni->tx_q = phys_to_virt(dev_info.tx_phys);
-       kni->rx_q = phys_to_virt(dev_info.rx_phys);
-       kni->alloc_q = phys_to_virt(dev_info.alloc_phys);
-       kni->free_q = phys_to_virt(dev_info.free_phys);
+       if (dev_info.iova_mode) {
+#ifdef HAVE_IOVA_TO_KVA_MAPPING_SUPPORT
+               kni->tx_q = iova_to_kva(current, dev_info.tx_phys);
+               kni->rx_q = iova_to_kva(current, dev_info.rx_phys);
+               kni->alloc_q = iova_to_kva(current, dev_info.alloc_phys);
+               kni->free_q = iova_to_kva(current, dev_info.free_phys);
+
+               kni->req_q = iova_to_kva(current, dev_info.req_phys);
+               kni->resp_q = iova_to_kva(current, dev_info.resp_phys);
+               kni->sync_va = dev_info.sync_va;
+               kni->sync_kva = iova_to_kva(current, dev_info.sync_phys);
+               kni->usr_tsk = current;
+               kni->iova_mode = 1;
+#else
+               pr_err("KNI module does not support IOVA to VA translation\n");
+               return -EINVAL;
+#endif
+       } else {
+
+               kni->tx_q = phys_to_virt(dev_info.tx_phys);
+               kni->rx_q = phys_to_virt(dev_info.rx_phys);
+               kni->alloc_q = phys_to_virt(dev_info.alloc_phys);
+               kni->free_q = phys_to_virt(dev_info.free_phys);
 
-       kni->req_q = phys_to_virt(dev_info.req_phys);
-       kni->resp_q = phys_to_virt(dev_info.resp_phys);
-       kni->sync_va = dev_info.sync_va;
-       kni->sync_kva = phys_to_virt(dev_info.sync_phys);
+               kni->req_q = phys_to_virt(dev_info.req_phys);
+               kni->resp_q = phys_to_virt(dev_info.resp_phys);
+               kni->sync_va = dev_info.sync_va;
+               kni->sync_kva = phys_to_virt(dev_info.sync_phys);
+               kni->iova_mode = 0;
+       }
 
        kni->mbuf_size = dev_info.mbuf_size;
 
@@ -533,14 +554,14 @@ static int __init
 kni_parse_carrier_state(void)
 {
        if (!carrier) {
-               dflt_carrier = 0;
+               kni_dflt_carrier = 0;
                return 0;
        }
 
        if (strcmp(carrier, "off") == 0)
-               dflt_carrier = 0;
+               kni_dflt_carrier = 0;
        else if (strcmp(carrier, "on") == 0)
-               dflt_carrier = 1;
+               kni_dflt_carrier = 1;
        else
                return -1;
 
@@ -567,7 +588,7 @@ kni_init(void)
                return -EINVAL;
        }
 
-       if (dflt_carrier == 0)
+       if (kni_dflt_carrier == 0)
                pr_debug("Default carrier state set to off.\n");
        else
                pr_debug("Default carrier state set to on.\n");