bus/pci: introduce Windows support with stubs

[dpdk.git] / lib / librte_vhost / vhost.h

diff --git a/lib/librte_vhost/vhost.h b/lib/librte_vhost/vhost.h
index 2087d14..df98d15 100644 (file)
--- a/lib/librte_vhost/vhost.h
+++ b/lib/librte_vhost/vhost.h
@@ -350,7 +350,7 @@ struct virtio_net {
        uint32_t                flags;
        uint16_t                vhost_hlen;
        /* to tell if we need broadcast rarp packet */
-       rte_atomic16_t          broadcast_rarp;
+       int16_t                 broadcast_rarp;
        uint32_t                nr_vring;
        int                     dequeue_zero_copy;
        int                     extbuf;
@@ -543,24 +543,51 @@ extern int vhost_data_log_level;
 #define PRINT_PACKET(device, addr, size, header) do {} while (0)
 #endif
 
-extern uint64_t VHOST_FEATURES;
 #define MAX_VHOST_DEVICE       1024
 extern struct virtio_net *vhost_devices[MAX_VHOST_DEVICE];
 
+#define VHOST_BINARY_SEARCH_THRESH 256
+
+static __rte_always_inline int guest_page_addrcmp(const void *p1,
+                                               const void *p2)
+{
+       const struct guest_page *page1 = (const struct guest_page *)p1;
+       const struct guest_page *page2 = (const struct guest_page *)p2;
+
+       if (page1->guest_phys_addr > page2->guest_phys_addr)
+               return 1;
+       if (page1->guest_phys_addr < page2->guest_phys_addr)
+               return -1;
+
+       return 0;
+}
+
 /* Convert guest physical address to host physical address */
 static __rte_always_inline rte_iova_t
 gpa_to_hpa(struct virtio_net *dev, uint64_t gpa, uint64_t size)
 {
        uint32_t i;
        struct guest_page *page;
-
-       for (i = 0; i < dev->nr_guest_pages; i++) {
-               page = &dev->guest_pages[i];
-
-               if (gpa >= page->guest_phys_addr &&
-                   gpa + size < page->guest_phys_addr + page->size) {
-                       return gpa - page->guest_phys_addr +
-                              page->host_phys_addr;
+       struct guest_page key;
+
+       if (dev->nr_guest_pages >= VHOST_BINARY_SEARCH_THRESH) {
+               key.guest_phys_addr = gpa;
+               page = bsearch(&key, dev->guest_pages, dev->nr_guest_pages,
+                              sizeof(struct guest_page), guest_page_addrcmp);
+               if (page) {
+                       if (gpa + size < page->guest_phys_addr + page->size)
+                               return gpa - page->guest_phys_addr +
+                                       page->host_phys_addr;
+               }
+       } else {
+               for (i = 0; i < dev->nr_guest_pages; i++) {
+                       page = &dev->guest_pages[i];
+
+                       if (gpa >= page->guest_phys_addr &&
+                           gpa + size < page->guest_phys_addr +
+                           page->size)
+                               return gpa - page->guest_phys_addr +
+                                      page->host_phys_addr;
                }
        }