Mark
40 lines
1.1 KiB
C
40 lines
1.1 KiB
C
#pragma once
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#include "sys/types.h"
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#include "sys/spin.h"
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#define PACKET_SIZE_L3INET (sizeof(struct eth_frame) + sizeof(struct inet_frame))
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#define PACKET_SIZE_L3ARP (sizeof(struct eth_frame) + sizeof(struct arp_frame))
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#define PACKET_L2(p) ((void *) ((p)->data))
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// TODO: Only works with ethernet
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#define PACKET_L3(p) ((void *) ((p)->data + sizeof(struct eth_frame)))
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// TODO: Only works for TCP/IP stack
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#define PACKET_L4(p) ((void *) ((p)->data + PACKET_SIZE_L3INET))
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struct netdev;
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// Takes up a single page
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#define PACKET_DATA_MAX (4056)
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struct packet {
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size_t size;
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struct netdev *dev;
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size_t refcount;
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char data[PACKET_DATA_MAX];
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};
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struct packet_qh {
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struct packet *packet;
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struct packet_qh *prev, *next;
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};
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struct packet_queue {
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spin_t lock;
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struct packet_qh *head, *tail;
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};
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struct packet *packet_create(size_t size);
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void packet_ref(struct packet *p);
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void packet_unref(struct packet *p);
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void packet_queue_init(struct packet_queue *q);
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void packet_queue_push(struct packet_queue *q, struct packet *p);
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struct packet *packet_queue_pop(struct packet_queue *q);
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