Adding upstream version 1:7.2+dfsg.upstream/1%7.2+dfsgupstream

Signed-off-by: Daniel Baumann <mail@daniel-baumann.ch>

1 files changed, 204 insertions, 0 deletions

diff --git a/hw/net/net_tx_pkt.h b/hw/net/net_tx_pkt.h
new file mode 100644
index 00000000..4ec8bbe9
--- /dev/null
+++ b/hw/net/net_tx_pkt.h
@@ -0,0 +1,204 @@
+/*
+ * QEMU 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 NET_TX_PKT_H
+#define NET_TX_PKT_H
+
+#include "net/eth.h"
+#include "exec/hwaddr.h"
+
+/* define to enable packet dump functions */
+/*#define NET_TX_PKT_DEBUG*/
+
+struct NetTxPkt;
+
+/**
+ * Init function for tx packet functionality
+ *
+ * @pkt:            packet pointer
+ * @pci_dev:        PCI device processing this packet
+ * @max_frags:      max tx ip fragments
+ * @has_virt_hdr:   device uses virtio header.
+ */
+void net_tx_pkt_init(struct NetTxPkt **pkt, PCIDevice *pci_dev,
+    uint32_t max_frags, bool has_virt_hdr);
+
+/**
+ * Clean all tx packet resources.
+ *
+ * @pkt:            packet.
+ */
+void net_tx_pkt_uninit(struct NetTxPkt *pkt);
+
+/**
+ * get virtio header
+ *
+ * @pkt:            packet
+ * @ret:            virtio header
+ */
+struct virtio_net_hdr *net_tx_pkt_get_vhdr(struct NetTxPkt *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 net_tx_pkt_build_vheader(struct NetTxPkt *pkt, bool tso_enable,
+    bool csum_enable, uint32_t gso_size);
+
+/**
+* updates vlan tag, and adds vlan header with custom ethernet type
+* in case it is missing.
+*
+* @pkt:            packet
+* @vlan:           VLAN tag
+* @vlan_ethtype:   VLAN header Ethernet type
+*
+*/
+void net_tx_pkt_setup_vlan_header_ex(struct NetTxPkt *pkt,
+    uint16_t vlan, uint16_t vlan_ethtype);
+
+/**
+* updates vlan tag, and adds vlan header in case it is missing
+*
+* @pkt:            packet
+* @vlan:           VLAN tag
+*
+*/
+static inline void
+net_tx_pkt_setup_vlan_header(struct NetTxPkt *pkt, uint16_t vlan)
+{
+    net_tx_pkt_setup_vlan_header_ex(pkt, vlan, ETH_P_VLAN);
+}
+
+/**
+ * populate data fragment into pkt context.
+ *
+ * @pkt:            packet
+ * @pa:             physical address of fragment
+ * @len:            length of fragment
+ *
+ */
+bool net_tx_pkt_add_raw_fragment(struct NetTxPkt *pkt, hwaddr pa,
+    size_t len);
+
+/**
+ * Fix ip header fields and calculate IP header and pseudo header checksums.
+ *
+ * @pkt:            packet
+ *
+ */
+void net_tx_pkt_update_ip_checksums(struct NetTxPkt *pkt);
+
+/**
+ * Calculate the IP header checksum.
+ *
+ * @pkt:            packet
+ *
+ */
+void net_tx_pkt_update_ip_hdr_checksum(struct NetTxPkt *pkt);
+
+/**
+ * get length of all populated data.
+ *
+ * @pkt:            packet
+ * @ret:            total data length
+ *
+ */
+size_t net_tx_pkt_get_total_len(struct NetTxPkt *pkt);
+
+/**
+ * get packet type
+ *
+ * @pkt:            packet
+ * @ret:            packet type
+ *
+ */
+eth_pkt_types_e net_tx_pkt_get_packet_type(struct NetTxPkt *pkt);
+
+/**
+ * prints packet data if debug is enabled
+ *
+ * @pkt:            packet
+ *
+ */
+void net_tx_pkt_dump(struct NetTxPkt *pkt);
+
+/**
+ * reset tx packet private context (needed to be called between packets)
+ *
+ * @pkt:            packet
+ *
+ */
+void net_tx_pkt_reset(struct NetTxPkt *pkt);
+
+/**
+ * Send packet to qemu. handles sw offloads if vhdr is not supported.
+ *
+ * @pkt:            packet
+ * @nc:             NetClientState
+ * @ret:            operation result
+ *
+ */
+bool net_tx_pkt_send(struct NetTxPkt *pkt, NetClientState *nc);
+
+/**
+* Redirect packet directly to receive path (emulate loopback phy).
+* Handles sw offloads if vhdr is not supported.
+*
+* @pkt:            packet
+* @nc:             NetClientState
+* @ret:            operation result
+*
+*/
+bool net_tx_pkt_send_loopback(struct NetTxPkt *pkt, NetClientState *nc);
+
+/**
+ * parse raw packet data and analyze offload requirements.
+ *
+ * @pkt:            packet
+ *
+ */
+bool net_tx_pkt_parse(struct NetTxPkt *pkt);
+
+/**
+* indicates if there are data fragments held by this packet object.
+*
+* @pkt:            packet
+*
+*/
+bool net_tx_pkt_has_fragments(struct NetTxPkt *pkt);
+
+/**
+ * Fix IPv6 'plen' field.
+ * If ipv6 payload length field is 0 - then there should be Hop-by-Hop
+ * option for packets greater than 65,535.
+ * For packets with a payload less than 65,535: fix 'plen' field.
+ * For backends with vheader, we need just one packet with proper
+ * payload size. For now, qemu drops every packet with size greater 64K
+ * (see net_tx_pkt_send()) so, there is no reason to add jumbo option to ip6
+ * hop-by-hop extension if it's missed
+ *
+ * @pkt            packet
+ */
+void net_tx_pkt_fix_ip6_payload_len(struct NetTxPkt *pkt);
+
+#endif