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| author | royger <royger@FreeBSD.org> | 2015-12-18 14:56:49 +0000 |
|---|---|---|
| committer | royger <royger@FreeBSD.org> | 2015-12-18 14:56:49 +0000 |
| commit | a5f1c95b3c8a3114c0dd550de01326f7c442020a (patch) | |
| tree | a075109a5e7722bc6c579f36ad2768b0c940a4d0 /sys/dev/hyperv | |
| parent | 40f9a4207f94b185d4e437f0c9f2b731fef7addb (diff) | |
| download | FreeBSD-src-a5f1c95b3c8a3114c0dd550de01326f7c442020a.zip FreeBSD-src-a5f1c95b3c8a3114c0dd550de01326f7c442020a.tar.gz | |
MFC r291156:
Ignore the inbound checksum flags when doing packet forwarding in netvsc
driver.
Sponsored by: Microsoft OSTC
PR: 203630
Diffstat (limited to 'sys/dev/hyperv')
| -rw-r--r-- | sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c b/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c index 5502d1b..33718a9 100644 --- a/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c +++ b/sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c @@ -128,6 +128,15 @@ __FBSDID("$FreeBSD$"); #define HV_NV_SC_PTR_OFFSET_IN_BUF 0 #define HV_NV_PACKET_OFFSET_IN_BUF 16 +/* + * A unified flag for all outbound check sum flags is useful, + * and it helps avoiding unnecessary check sum calculation in + * network forwarding scenario. + */ +#define HV_CSUM_FOR_OUTBOUND \ + (CSUM_IP|CSUM_IP_UDP|CSUM_IP_TCP|CSUM_IP_SCTP|CSUM_IP_TSO| \ + CSUM_IP_ISCSI|CSUM_IP6_UDP|CSUM_IP6_TCP|CSUM_IP6_SCTP| \ + CSUM_IP6_TSO|CSUM_IP6_ISCSI) /* * Data types @@ -570,7 +579,8 @@ hn_start_locked(struct ifnet *ifp) packet->vlan_tci & 0xfff; } - if (0 == m_head->m_pkthdr.csum_flags) { + /* Only check the flags for outbound and ignore the ones for inbound */ + if (0 == (m_head->m_pkthdr.csum_flags & HV_CSUM_FOR_OUTBOUND)) { goto pre_send; } |
