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hyperv/hn: Obey IFCAP_RXCSUM configure

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Reviewed by:	adrian
Approved by:	adrian (mentor)
MFC after:	1 week
Sponsored by:	Microsoft OSTC
Differential Revision:	https://reviews.freebsd.org/D5104
This commit is contained in:
sephe 2016-02-05 05:17:48 +00:00
parent 2f57b75e68
commit 0f6048195a
1 changed files with 12 additions and 7 deletions
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19
sys/dev/hyperv/netvsc/hv_netvsc_drv_freebsd.c
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@ -1142,7 +1142,7 @@ netvsc_recv(struct hv_device *device_ctx, netvsc_packet *packet,
struct mbuf *m_new;
struct ifnet *ifp;
device_t dev = device_ctx->device;
int size, do_lro = 0;
int size, do_lro = 0, do_csum = 1;
if (sc == NULL) {
return (0); /* TODO: KYS how can this be! */
@ -1190,18 +1190,21 @@ netvsc_recv(struct hv_device *device_ctx, netvsc_packet *packet,
}
m_new->m_pkthdr.rcvif = ifp;
if (__predict_false((ifp->if_capenable & IFCAP_RXCSUM) == 0))
do_csum = 0;
/* receive side checksum offload */
if (csum_info != NULL) {
/* IP csum offload */
if (csum_info->receive.ip_csum_succeeded) {
if (csum_info->receive.ip_csum_succeeded && do_csum) {
m_new->m_pkthdr.csum_flags |=
(CSUM_IP_CHECKED | CSUM_IP_VALID);
sc->hn_csum_ip++;
}
/* TCP/UDP csum offload */
if (csum_info->receive.tcp_csum_succeeded ||
csum_info->receive.udp_csum_succeeded) {
if ((csum_info->receive.tcp_csum_succeeded ||
csum_info->receive.udp_csum_succeeded) && do_csum) {
m_new->m_pkthdr.csum_flags |=
(CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
m_new->m_pkthdr.csum_data = 0xffff;
@ -1239,7 +1242,8 @@ netvsc_recv(struct hv_device *device_ctx, netvsc_packet *packet,
pr = hn_check_iplen(m_new, hoff);
if (pr == IPPROTO_TCP) {
if (sc->hn_trust_hcsum & HN_TRUST_HCSUM_TCP) {
if (do_csum &&
(sc->hn_trust_hcsum & HN_TRUST_HCSUM_TCP)) {
sc->hn_csum_trusted++;
m_new->m_pkthdr.csum_flags |=
(CSUM_IP_CHECKED | CSUM_IP_VALID |
@ -1249,14 +1253,15 @@ netvsc_recv(struct hv_device *device_ctx, netvsc_packet *packet,
/* Rely on SW csum verification though... */
do_lro = 1;
} else if (pr == IPPROTO_UDP) {
if (sc->hn_trust_hcsum & HN_TRUST_HCSUM_UDP) {
if (do_csum &&
(sc->hn_trust_hcsum & HN_TRUST_HCSUM_UDP)) {
sc->hn_csum_trusted++;
m_new->m_pkthdr.csum_flags |=
(CSUM_IP_CHECKED | CSUM_IP_VALID |
CSUM_DATA_VALID | CSUM_PSEUDO_HDR);
m_new->m_pkthdr.csum_data = 0xffff;
}
} else if (pr != IPPROTO_DONE &&
} else if (pr != IPPROTO_DONE && do_csum &&
(sc->hn_trust_hcsum & HN_TRUST_HCSUM_IP)) {
sc->hn_csum_trusted++;
m_new->m_pkthdr.csum_flags |=