svn commit: r295299 - head/sys/dev/hyperv/netvsc

[Sepherosa Ziehau]

Author: sephe
Date: Fri Feb  5 05:06:14 2016
New Revision: 295299
URL: https://svnweb.freebsd.org/changeset/base/295299

Log:
  hyperv/hn: Enable UDP RXCSUM
  
  Reviewed by:	adrian
  Approved by:	adrian (mentor)
  MFC after:	1 week
  Sponsored by:	Microsoft OSTC
  Differential Revision:	https://reviews.freebsd.org/D5102

Modified:
  head/sys/dev/hyperv/netvsc/hv_net_vsc.h
  head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c

Modified: head/sys/dev/hyperv/netvsc/hv_net_vsc.h
==============================================================================
--- head/sys/dev/hyperv/netvsc/hv_net_vsc.h	Fri Feb  5 05:01:02 2016	(r295298)
+++ head/sys/dev/hyperv/netvsc/hv_net_vsc.h	Fri Feb  5 05:06:14 2016	(r295299)
@@ -1036,6 +1036,7 @@ typedef struct hn_softc {
 
 	u_long		hn_csum_ip;
 	u_long		hn_csum_tcp;
+	u_long		hn_csum_udp;
 	u_long		hn_csum_trusted;
 	u_long		hn_lro_tried;
 	u_long		hn_small_pkts;

Modified: head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
==============================================================================
--- head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c	Fri Feb  5 05:01:02 2016	(r295298)
+++ head/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c	Fri Feb  5 05:06:14 2016	(r295299)
@@ -456,6 +456,8 @@ netvsc_attach(device_t dev)
 	    CTLFLAG_RW, &sc->hn_csum_ip, "RXCSUM IP");
 	SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "csum_tcp",
 	    CTLFLAG_RW, &sc->hn_csum_tcp, "RXCSUM TCP");
+	SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "csum_udp",
+	    CTLFLAG_RW, &sc->hn_csum_udp, "RXCSUM UDP");
 	SYSCTL_ADD_ULONG(ctx, child, OID_AUTO, "csum_trusted",
 	    CTLFLAG_RW, &sc->hn_csum_trusted,
 	    "# of TCP segements that we trust host's csum verification");
@@ -1156,7 +1158,7 @@ netvsc_recv(struct hv_device *device_ctx
 	m_new->m_pkthdr.rcvif = ifp;
 
 	/* receive side checksum offload */
-	if (NULL != csum_info) {
+	if (csum_info != NULL) {
 		/* IP csum offload */
 		if (csum_info->receive.ip_csum_succeeded) {
 			m_new->m_pkthdr.csum_flags |=
@@ -1164,12 +1166,16 @@ netvsc_recv(struct hv_device *device_ctx
 			sc->hn_csum_ip++;
 		}
 
-		/* TCP csum offload */
-		if (csum_info->receive.tcp_csum_succeeded) {
+		/* TCP/UDP csum offload */
+		if (csum_info->receive.tcp_csum_succeeded ||
+		    csum_info->receive.udp_csum_succeeded) {
 			m_new->m_pkthdr.csum_flags |=
 			    (CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
 			m_new->m_pkthdr.csum_data = 0xffff;
-			sc->hn_csum_tcp++;
+			if (csum_info->receive.tcp_csum_succeeded)
+				sc->hn_csum_tcp++;
+			else
+				sc->hn_csum_udp++;
 		}
 
 		if (csum_info->receive.ip_csum_succeeded &&