2 files changed, 15 insertions, 11 deletions
diff --git a/runsc/sandbox/BUILD b/runsc/sandbox/BUILD
index ddbc37456..c95d50294 100644
--- a/runsc/sandbox/BUILD
+++ b/runsc/sandbox/BUILD
@@ -1,4 +1,4 @@
-load("@io_bazel_rules_go//go:def.bzl", "go_library")
+load("//tools:defs.bzl", "go_library")
 
 package(licenses = ["notice"])
 
@@ -9,7 +9,6 @@ go_library(
         "network_unsafe.go",
         "sandbox.go",
     ],
-    importpath = "gvisor.dev/gvisor/runsc/sandbox",
     visibility = [
         "//runsc:__subpackages__",
     ],
diff --git a/runsc/sandbox/network.go b/runsc/sandbox/network.go
index be8b72b3e..ff48f5646 100644
--- a/runsc/sandbox/network.go
+++ b/runsc/sandbox/network.go
@@ -321,16 +321,21 @@ func createSocket(iface net.Interface, ifaceLink netlink.Link, enableGSO bool) (
 		}
 	}
 
-	// Use SO_RCVBUFFORCE because on linux the receive buffer for an
-	// AF_PACKET socket is capped by "net.core.rmem_max". rmem_max
-	// defaults to a unusually low value of 208KB. This is too low
-	// for gVisor to be able to receive packets at high throughputs
-	// without incurring packet drops.
-	const rcvBufSize = 4 << 20 // 4MB.
-
-	if err := syscall.SetsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_RCVBUFFORCE, rcvBufSize); err != nil {
-		return nil, fmt.Errorf("failed to increase socket rcv buffer to %d: %v", rcvBufSize, err)
+	// Use SO_RCVBUFFORCE/SO_SNDBUFFORCE because on linux the receive/send buffer
+	// for an AF_PACKET socket is capped by "net.core.rmem_max/wmem_max".
+	// wmem_max/rmem_max default to a unusually low value of 208KB. This is too low
+	// for gVisor to be able to receive packets at high throughputs without
+	// incurring packet drops.
+	const bufSize = 4 << 20 // 4MB.
+
+	if err := syscall.SetsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_RCVBUFFORCE, bufSize); err != nil {
+		return nil, fmt.Errorf("failed to increase socket rcv buffer to %d: %v", bufSize, err)
 	}
+
+	if err := syscall.SetsockoptInt(fd, syscall.SOL_SOCKET, syscall.SO_SNDBUFFORCE, bufSize); err != nil {
+		return nil, fmt.Errorf("failed to increase socket snd buffer to %d: %v", bufSize, err)
+	}
+
 	return &socketEntry{deviceFile, gsoMaxSize}, nil
 }