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hw/net/net_tx_pkt: Decouple interface from PCI

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This allows to use the network packet abstractions even if PCI is not
used.

Signed-off-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Akihiko Odaki 2023-05-23 11:42:53 +09:00 • committed by Jason Wang
parent 163246e1ce
commit a51db58027
5 changed files with 54 additions and 53 deletions
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31
hw/net/net_tx_pkt.h
View file

@ -26,17 +26,16 @@
struct NetTxPkt;
typedef void (* NetTxPktCallback)(void *, const struct iovec *, int, const struct iovec *, int);
typedef void (*NetTxPktFreeFrag)(void *, void *, size_t);
typedef void (*NetTxPktSend)(void *, const struct iovec *, int, const struct iovec *, int);
/**
* Init function for tx packet functionality
*
* @pkt: packet pointer
* @pci_dev: PCI device processing this packet
* @max_frags: max tx ip fragments
*/
void net_tx_pkt_init(struct NetTxPkt **pkt, PCIDevice *pci_dev,
uint32_t max_frags);
void net_tx_pkt_init(struct NetTxPkt **pkt, uint32_t max_frags);
/**
* Clean all tx packet resources.
@ -95,12 +94,11 @@ net_tx_pkt_setup_vlan_header(struct NetTxPkt *pkt, uint16_t vlan)
* populate data fragment into pkt context.
*
* @pkt: packet
* @pa: physical address of fragment
* @base: pointer to fragment
* @len: length of fragment
*
*/
bool net_tx_pkt_add_raw_fragment(struct NetTxPkt *pkt, hwaddr pa,
size_t len);
bool net_tx_pkt_add_raw_fragment(struct NetTxPkt *pkt, void *base, size_t len);
/**
* Fix ip header fields and calculate IP header and pseudo header checksums.
@ -148,10 +146,11 @@ void net_tx_pkt_dump(struct NetTxPkt *pkt);
* reset tx packet private context (needed to be called between packets)
*
* @pkt: packet
* @dev: PCI device processing the next packet
*
* @callback: function to free the fragments
* @context: pointer to be passed to the callback
*/
void net_tx_pkt_reset(struct NetTxPkt *pkt, PCIDevice *dev);
void net_tx_pkt_reset(struct NetTxPkt *pkt,
NetTxPktFreeFrag callback, void *context);
/**
* Unmap a fragment mapped from a PCI device.
@ -162,6 +161,16 @@ void net_tx_pkt_reset(struct NetTxPkt *pkt, PCIDevice *dev);
*/
void net_tx_pkt_unmap_frag_pci(void *context, void *base, size_t len);
/**
* map data fragment from PCI device and populate it into pkt context.
*
* @pci_dev: PCI device owning fragment
* @pa: physical address of fragment
* @len: length of fragment
*/
bool net_tx_pkt_add_raw_fragment_pci(struct NetTxPkt *pkt, PCIDevice *pci_dev,
dma_addr_t pa, size_t len);
/**
* Send packet to qemu. handles sw offloads if vhdr is not supported.
*
@ -182,7 +191,7 @@ bool net_tx_pkt_send(struct NetTxPkt *pkt, NetClientState *nc);
* @ret: operation result
*/
bool net_tx_pkt_send_custom(struct NetTxPkt *pkt, bool offload,
NetTxPktCallback callback, void *context);
NetTxPktSend callback, void *context);
/**
* parse raw packet data and analyze offload requirements.