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Made the temporary buffer part of the TCP senddata() API, to ease the

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transition away from uIP.

Prepared ipv4.c for transition away from uIP.
This commit is contained in:
Michael Brown
2006-06-17 23:20:54 +00:00
parent 3c8aafa209
commit 8637834031
6 changed files with 61 additions and 38 deletions
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14
src/include/gpxe/tcp.h
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@@ -66,6 +66,8 @@ struct tcp_operations {
* Transmit data
*
* @v conn TCP connection
* @v buf Temporary data buffer
* @v len Length of temporary data buffer
*
* The application should transmit whatever it currently wants
* to send using tcp_send(). If retransmissions are required,
@@ -73,8 +75,16 @@ struct tcp_operations {
* regenerate the data. The easiest way to implement this is
* to ensure that senddata() never changes the application's
* state.
*
* The application may use the temporary data buffer to
* construct the data to be sent. Note that merely filling
* the buffer will do nothing; the application must call
* tcp_send() in order to actually transmit the data. Use of
* the buffer is not compulsory; the application may call
* tcp_send() on any block of data.
*/
void ( * senddata ) ( struct tcp_connection *conn );
void ( * senddata ) ( struct tcp_connection *conn, void *buf,
size_t len );
};
/**
@@ -88,8 +98,6 @@ struct tcp_connection {
struct tcp_operations *tcp_op;
};
extern void *tcp_buffer;
extern size_t tcp_buflen;
extern void tcp_connect ( struct tcp_connection *conn );
extern void tcp_send ( struct tcp_connection *conn, const void *data,
size_t len );