diff options
| -rw-r--r-- | datapath-windows/ovsext/Actions.c | 52 |
1 files changed, 51 insertions, 1 deletions
diff --git a/datapath-windows/ovsext/Actions.c b/datapath-windows/ovsext/Actions.c index 467bfbc82..3dfcc6827 100644 --- a/datapath-windows/ovsext/Actions.c +++ b/datapath-windows/ovsext/Actions.c @@ -1306,7 +1306,6 @@ OvsUpdateEthHeader(OvsForwardingContext *ovsFwdCtx, return NDIS_STATUS_SUCCESS; } - /* *---------------------------------------------------------------------------- * OvsGetHeaderBySize -- @@ -1382,6 +1381,52 @@ PUINT8 OvsGetHeaderBySize(OvsForwardingContext *ovsFwdCtx, return start + curMdlOffset; } +/* + *---------------------------------------------------------------------------- + * OvsUpdateUdpPorts -- + * Updates the UDP source or destination port in ovsFwdCtx.curNbl inline + * based on the specified key. + *---------------------------------------------------------------------------- + */ +static __inline NDIS_STATUS +OvsUpdateUdpPorts(OvsForwardingContext *ovsFwdCtx, + const struct ovs_key_udp *udpAttr) +{ + PUINT8 bufferStart; + OVS_PACKET_HDR_INFO *layers = &ovsFwdCtx->layers; + UDPHdr *udpHdr = NULL; + + ASSERT(layers->value != 0); + + if (!layers->isUdp) { + ovsActionStats.noCopiedNbl++; + return NDIS_STATUS_FAILURE; + } + + bufferStart = OvsGetHeaderBySize(ovsFwdCtx, layers->l7Offset); + if (!bufferStart) { + return NDIS_STATUS_RESOURCES; + } + + udpHdr = (UDPHdr *)(bufferStart + layers->l4Offset); + if (udpHdr->check) { + if (udpHdr->source != udpAttr->udp_src) { + udpHdr->check = ChecksumUpdate16(udpHdr->check, udpHdr->source, + udpAttr->udp_src); + udpHdr->source = udpAttr->udp_src; + } + if (udpHdr->dest != udpAttr->udp_dst) { + udpHdr->check = ChecksumUpdate16(udpHdr->check, udpHdr->dest, + udpAttr->udp_dst); + udpHdr->dest = udpAttr->udp_dst; + } + } else { + udpHdr->source = udpAttr->udp_src; + udpHdr->dest = udpAttr->udp_dst; + } + + return NDIS_STATUS_SUCCESS; +} /* *---------------------------------------------------------------------------- @@ -1525,6 +1570,11 @@ OvsExecuteSetAction(OvsForwardingContext *ovsFwdCtx, break; } + case OVS_KEY_ATTR_UDP: + status = OvsUpdateUdpPorts(ovsFwdCtx, + NlAttrGetUnspec(a, sizeof(struct ovs_key_udp))); + break; + default: OVS_LOG_INFO("Unhandled attribute %#x", type); break; |