1 files changed, 148 insertions, 0 deletions
diff --git a/src/hw/net/vmxnet_tx_pkt.h b/src/hw/net/vmxnet_tx_pkt.h
new file mode 100644
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+++ b/src/hw/net/vmxnet_tx_pkt.h
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+/*
+ * QEMU VMWARE VMXNET* paravirtual NICs - TX packets abstraction
+ *
+ * Copyright (c) 2012 Ravello Systems LTD (http://ravellosystems.com)
+ *
+ * Developed by Daynix Computing LTD (http://www.daynix.com)
+ *
+ * Authors:
+ * Dmitry Fleytman <dmitry@daynix.com>
+ * Tamir Shomer <tamirs@daynix.com>
+ * Yan Vugenfirer <yan@daynix.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef VMXNET_TX_PKT_H
+#define VMXNET_TX_PKT_H
+
+#include "stdint.h"
+#include "stdbool.h"
+#include "net/eth.h"
+#include "exec/hwaddr.h"
+
+/* define to enable packet dump functions */
+/*#define VMXNET_TX_PKT_DEBUG*/
+
+struct VmxnetTxPkt;
+
+/**
+ * Init function for tx packet functionality
+ *
+ * @pkt:            packet pointer
+ * @max_frags:      max tx ip fragments
+ * @has_virt_hdr:   device uses virtio header.
+ */
+void vmxnet_tx_pkt_init(struct VmxnetTxPkt **pkt, uint32_t max_frags,
+    bool has_virt_hdr);
+
+/**
+ * Clean all tx packet resources.
+ *
+ * @pkt:            packet.
+ */
+void vmxnet_tx_pkt_uninit(struct VmxnetTxPkt *pkt);
+
+/**
+ * get virtio header
+ *
+ * @pkt:            packet
+ * @ret:            virtio header
+ */
+struct virtio_net_hdr *vmxnet_tx_pkt_get_vhdr(struct VmxnetTxPkt *pkt);
+
+/**
+ * build virtio header (will be stored in module context)
+ *
+ * @pkt:            packet
+ * @tso_enable:     TSO enabled
+ * @csum_enable:    CSO enabled
+ * @gso_size:       MSS size for TSO
+ *
+ */
+void vmxnet_tx_pkt_build_vheader(struct VmxnetTxPkt *pkt, bool tso_enable,
+    bool csum_enable, uint32_t gso_size);
+
+/**
+ * updates vlan tag, and adds vlan header in case it is missing
+ *
+ * @pkt:            packet
+ * @vlan:           VLAN tag
+ *
+ */
+void vmxnet_tx_pkt_setup_vlan_header(struct VmxnetTxPkt *pkt, uint16_t vlan);
+
+/**
+ * populate data fragment into pkt context.
+ *
+ * @pkt:            packet
+ * @pa:             physical address of fragment
+ * @len:            length of fragment
+ *
+ */
+bool vmxnet_tx_pkt_add_raw_fragment(struct VmxnetTxPkt *pkt, hwaddr pa,
+    size_t len);
+
+/**
+ * fix ip header fields and calculate checksums needed.
+ *
+ * @pkt:            packet
+ *
+ */
+void vmxnet_tx_pkt_update_ip_checksums(struct VmxnetTxPkt *pkt);
+
+/**
+ * get length of all populated data.
+ *
+ * @pkt:            packet
+ * @ret:            total data length
+ *
+ */
+size_t vmxnet_tx_pkt_get_total_len(struct VmxnetTxPkt *pkt);
+
+/**
+ * get packet type
+ *
+ * @pkt:            packet
+ * @ret:            packet type
+ *
+ */
+eth_pkt_types_e vmxnet_tx_pkt_get_packet_type(struct VmxnetTxPkt *pkt);
+
+/**
+ * prints packet data if debug is enabled
+ *
+ * @pkt:            packet
+ *
+ */
+void vmxnet_tx_pkt_dump(struct VmxnetTxPkt *pkt);
+
+/**
+ * reset tx packet private context (needed to be called between packets)
+ *
+ * @pkt:            packet
+ *
+ */
+void vmxnet_tx_pkt_reset(struct VmxnetTxPkt *pkt);
+
+/**
+ * Send packet to qemu. handles sw offloads if vhdr is not supported.
+ *
+ * @pkt:            packet
+ * @nc:             NetClientState
+ * @ret:            operation result
+ *
+ */
+bool vmxnet_tx_pkt_send(struct VmxnetTxPkt *pkt, NetClientState *nc);
+
+/**
+ * parse raw packet data and analyze offload requirements.
+ *
+ * @pkt:            packet
+ *
+ */
+bool vmxnet_tx_pkt_parse(struct VmxnetTxPkt *pkt);
+
+#endif