maint: remove unused include for signal.h

[mirror_qemu.git] / hw / net / xen_nic.c

diff --git a/hw/net/xen_nic.c b/hw/net/xen_nic.c
index 19ecfc4ccf9b862d21c02d017761ab35a6ff3d58..0da16b44f40a708c8ecb43f9b6e9521aad81ff96 100644 (file)
--- a/hw/net/xen_nic.c
+++ b/hw/net/xen_nic.c
@@ -24,7 +24,6 @@
 #include <stdarg.h>
 #include <string.h>
 #include <unistd.h>
-#include <signal.h>
 #include <inttypes.h>
 #include <fcntl.h>
 #include <errno.h>
@@ -234,27 +233,6 @@ static void net_rx_response(struct XenNetDev *netdev,
 
 #define NET_IP_ALIGN 2
 
-static int net_rx_ok(NetClientState *nc)
-{
-    struct XenNetDev *netdev = qemu_get_nic_opaque(nc);
-    RING_IDX rc, rp;
-
-    if (netdev->xendev.be_state != XenbusStateConnected) {
-        return 0;
-    }
-
-    rc = netdev->rx_ring.req_cons;
-    rp = netdev->rx_ring.sring->req_prod;
-    xen_rmb();
-
-    if (rc == rp || RING_REQUEST_CONS_OVERFLOW(&netdev->rx_ring, rc)) {
-        xen_be_printf(&netdev->xendev, 2, "%s: no rx buffers (%d/%d)\n",
-                      __FUNCTION__, rc, rp);
-        return 0;
-    }
-    return 1;
-}
-
 static ssize_t net_rx_packet(NetClientState *nc, const uint8_t *buf, size_t size)
 {
     struct XenNetDev *netdev = qemu_get_nic_opaque(nc);
@@ -271,8 +249,7 @@ static ssize_t net_rx_packet(NetClientState *nc, const uint8_t *buf, size_t size
     xen_rmb(); /* Ensure we see queued requests up to 'rp'. */
 
     if (rc == rp || RING_REQUEST_CONS_OVERFLOW(&netdev->rx_ring, rc)) {
-        xen_be_printf(&netdev->xendev, 2, "no buffer, drop packet\n");
-        return -1;
+        return 0;
     }
     if (size > XC_PAGE_SIZE - NET_IP_ALIGN) {
         xen_be_printf(&netdev->xendev, 0, "packet too big (%lu > %ld)",
@@ -304,7 +281,6 @@ static ssize_t net_rx_packet(NetClientState *nc, const uint8_t *buf, size_t size
 static NetClientInfo net_xen_info = {
     .type = NET_CLIENT_OPTIONS_KIND_NIC,
     .size = sizeof(NICState),
-    .can_receive = net_rx_ok,
     .receive = net_rx_packet,
 };