63034d3261
This restrict ARP handling to MAC and IP addresses but in practice we need only this case anyway and other cases are very rar if exist at all. It makes code much simpler and less error-prone.
31 lines
1 KiB
C
31 lines
1 KiB
C
#ifndef GRUB_NETBUFF_HEADER
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#define GRUB_NETBUFF_HEADER
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#include <grub/misc.h>
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#define NETBUFF_ALIGN 2048
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#define NETBUFFMINLEN 64
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struct grub_net_buff
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{
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/* Pointer to the start of the buffer. */
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grub_uint8_t *head;
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/* Pointer to the data. */
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grub_uint8_t *data;
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/* Pointer to the tail. */
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grub_uint8_t *tail;
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/* Pointer to the end of the buffer. */
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grub_uint8_t *end;
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};
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grub_err_t grub_netbuff_put (struct grub_net_buff *net_buff, grub_size_t len);
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grub_err_t grub_netbuff_unput (struct grub_net_buff *net_buff, grub_size_t len);
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grub_err_t grub_netbuff_push (struct grub_net_buff *net_buff, grub_size_t len);
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grub_err_t grub_netbuff_pull (struct grub_net_buff *net_buff, grub_size_t len);
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grub_err_t grub_netbuff_reserve (struct grub_net_buff *net_buff, grub_size_t len);
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grub_err_t grub_netbuff_clear (struct grub_net_buff *net_buff);
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struct grub_net_buff * grub_netbuff_alloc (grub_size_t len);
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struct grub_net_buff * grub_netbuff_make_pkt (grub_size_t len);
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void grub_netbuff_free (struct grub_net_buff *net_buff);
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#endif
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