linux version needs to be defined

src/core/lib/iomgr/internal_errqueue.h

@@ -41,6 +41,16 @@
 #endif /* GRPC_LINUX_ERRQUEUE */
 
 namespace grpc_core {
+
+#ifdef GRPC_LINUX_ERRQUEUE
+constexpr uint32_t kTimestampingSocketOptions = SOF_TIMESTAMPING_SOFTWARE |
+                                                SOF_TIMESTAMPING_OPT_ID |
+                                                SOF_TIMESTAMPING_OPT_TSONLY;
+constexpr uint32_t kTimestampingRecordingOptions =
+    SOF_TIMESTAMPING_TX_SCHED | SOF_TIMESTAMPING_TX_SOFTWARE |
+    SOF_TIMESTAMPING_TX_ACK;
+#endif /* GRPC_LINUX_ERRQUEUE */
+
 /* Returns true if kernel is capable of supporting errqueue and timestamping.
  * Currently allowing only linux kernels above 4.0.0
  */

src/core/lib/iomgr/port.h

@@ -60,6 +60,7 @@
 #define GRPC_HAVE_IP_PKTINFO 1
 #define GRPC_HAVE_MSG_NOSIGNAL 1
 #define GRPC_HAVE_UNIX_SOCKET 1
+#include <linux/version.h>
 #ifdef LINUX_VERSION_CODE
 #if LINUX_VERSION_CODE >= KERNEL_VERSION(4, 0, 0)
 #define GRPC_LINUX_ERRQUEUE 1

src/core/lib/iomgr/tcp_posix.cc

@@ -633,8 +633,7 @@ struct cmsghdr* process_timestamp(grpc_tcp* tcp, msghdr* msg,
     return cmsg;
   }
 
-  auto tss =
+  auto tss = reinterpret_cast<struct scm_timestamping*>(CMSG_DATA(cmsg));
-      reinterpret_cast<struct grpc_core::scm_timestamping*>(CMSG_DATA(cmsg));
   auto serr = reinterpret_cast<struct sock_extended_err*>(CMSG_DATA(next_cmsg));
   if (serr->ee_errno != ENOMSG ||
       serr->ee_origin != SO_EE_ORIGIN_TIMESTAMPING) {

test/core/iomgr/buffer_list_test.cc

@@ -75,8 +75,8 @@ static void TestVerifierCalledOnAckVerifier(void* arg,
 static void TestVerifierCalledOnAck() {
   struct sock_extended_err serr;
   serr.ee_data = 213;
-  serr.ee_info = grpc_core::SCM_TSTAMP_ACK;
+  serr.ee_info = SCM_TSTAMP_ACK;
-  struct grpc_core::scm_timestamping tss;
+  struct scm_timestamping tss;
   tss.ts[0].tv_sec = 123;
   tss.ts[0].tv_nsec = 456;
   grpc_core::grpc_tcp_set_write_timestamps_callback(
@@ -106,6 +106,6 @@ int main(int argc, char** argv) {
 
 #else /* GRPC_LINUX_ERRQUEUE */
 
-int main(int argc, char** argv) { return 1; }
+int main(int argc, char** argv) { return 0; }
 
 #endif /* GRPC_LINUX_ERRQUEUE */