blob: 528fbce840bc2fd2fc61156f08d308d9c9ee9cd3 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
|
/* ----------------------------------------------------------------------- *
*
* Copyright 2011 Intel Corporation; author: H. Peter Anvin
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
* Boston MA 02110-1301, USA; either version 2 of the License, or
* (at your option) any later version; incorporated herein by reference.
*
* ----------------------------------------------------------------------- */
/*
* tcp.c
*
* Common operations for TCP-based network protocols
*/
#include <lwip/api.h>
#include "pxe.h"
#include "../../../version.h"
#include "url.h"
void tcp_close_file(struct inode *inode)
{
struct pxe_pvt_inode *socket = PVT(inode);
if (socket->private.conn) {
netconn_delete(socket->private.conn);
socket->private.conn = NULL;
}
if (socket->private.buf) {
netbuf_delete(socket->private.buf);
socket->private.buf = NULL;
}
}
void tcp_fill_buffer(struct inode *inode)
{
struct pxe_pvt_inode *socket = PVT(inode);
void *data;
u16_t len;
err_t err;
/* Clean up or advance an inuse netbuf */
if (socket->private.buf) {
if (netbuf_next(socket->private.buf) < 0) {
netbuf_delete(socket->private.buf);
socket->private.buf = NULL;
}
}
/* If needed get a new netbuf */
if (!socket->private.buf) {
err = netconn_recv(socket->private.conn, &(socket->private.buf));
if (!socket->private.buf || err) {
socket->tftp_goteof = 1;
if (inode->size == -1)
inode->size = socket->tftp_filepos;
socket->ops->close(inode);
return;
}
}
/* Report the current fragment of the netbuf */
err = netbuf_data(socket->private.buf, &data, &len);
if (err) {
printf("netbuf_data err: %d\n", err);
kaboom();
}
socket->tftp_dataptr = data;
socket->tftp_filepos += len;
socket->tftp_bytesleft = len;
return;
}
const struct pxe_conn_ops tcp_conn_ops = {
.fill_buffer = tcp_fill_buffer,
.close = tcp_close_file,
};
|
