From bbe4d3b7d6478fe32babc2f40a672c4ff1fa79a6 Mon Sep 17 00:00:00 2001
From: Takuya ASADA <syuu@cloudius-systems.com>
Date: Fri, 16 Jan 2015 00:17:49 +0900
Subject: [PATCH] net: implemented SO_REUSEPORT support on UDP

Signed-off-by: Takuya ASADA <syuu@cloudius-systems.com>
---
 net/posix-stack.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/net/posix-stack.cc b/net/posix-stack.cc
index 3908f3672a..7e565000c2 100644
--- a/net/posix-stack.cc
+++ b/net/posix-stack.cc
@@ -221,6 +221,9 @@ public:
         auto sa = make_ipv4_address(bind_address);
         file_desc fd = file_desc::socket(sa.u.sa.sa_family, SOCK_DGRAM | SOCK_NONBLOCK | SOCK_CLOEXEC, 0);
         fd.setsockopt(SOL_IP, IP_PKTINFO, true);
+        if (engine.posix_reuseport_available()) {
+            fd.setsockopt(SOL_SOCKET, SO_REUSEPORT, 1);
+        }
         fd.bind(sa.u.sa, sizeof(sa.u.sas));
         _address = ipv4_addr(fd.get_address());
         _fd = std::make_unique<pollable_fd>(std::move(fd));