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net/vmnet: implement shared mode (vmnet-shared)

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Interaction with vmnet.framework in different modes
differs only on configuration stage, so we can create
common `send`, `receive`, etc. procedures and reuse them.

Reviewed-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Tested-by: Akihiko Odaki <akihiko.odaki@gmail.com>
Signed-off-by: Phillip Tennen <phillip@axleos.com>
Signed-off-by: Vladislav Yaroshchuk <Vladislav.Yaroshchuk@jetbrains.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
This commit is contained in:
Vladislav Yaroshchuk 2022-03-17 20:28:35 +03:00 • committed by Jason Wang
parent 81ad2964e9
commit 73f99db534
3 changed files with 491 additions and 5 deletions
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40
net/vmnet_int.h
View file

@ -15,11 +15,49 @@
#include "clients.h"
#include <vmnet/vmnet.h>
#include <dispatch/dispatch.h>
/**
* From vmnet.framework documentation
*
* Each read/write call allows up to 200 packets to be
* read or written for a maximum of 256KB.
*
* Each packet written should be a complete
* ethernet frame.
*
* https://developer.apple.com/documentation/vmnet
*/
#define VMNET_PACKETS_LIMIT 200
typedef struct VmnetState {
NetClientState nc;
NetClientState nc;
interface_ref vmnet_if;
uint64_t mtu;
uint64_t max_packet_size;
dispatch_queue_t if_queue;
QEMUBH *send_bh;
struct vmpktdesc packets_buf[VMNET_PACKETS_LIMIT];
int packets_send_current_pos;
int packets_send_end_pos;
struct iovec iov_buf[VMNET_PACKETS_LIMIT];
} VmnetState;
const char *vmnet_status_map_str(vmnet_return_t status);
int vmnet_if_create(NetClientState *nc,
xpc_object_t if_desc,
Error **errp);
ssize_t vmnet_receive_common(NetClientState *nc,
const uint8_t *buf,
size_t size);
void vmnet_cleanup_common(NetClientState *nc);
#endif /* VMNET_INT_H */