1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
59 lines
1.4 KiB
C
59 lines
1.4 KiB
C
/*
|
|
* linux/drivers/s390/net/qeth_tso.h ($Revision: 1.4 $)
|
|
*
|
|
* Header file for qeth TCP Segmentation Offload support.
|
|
*
|
|
* Copyright 2004 IBM Corporation
|
|
*
|
|
* Author(s): Frank Pavlic <pavlic@de.ibm.com>
|
|
*
|
|
* $Revision: 1.4 $ $Date: 2005/03/24 09:04:18 $
|
|
*
|
|
*/
|
|
#ifndef __QETH_TSO_H__
|
|
#define __QETH_TSO_H__
|
|
|
|
|
|
extern int
|
|
qeth_tso_send_packet(struct qeth_card *, struct sk_buff *,
|
|
struct qeth_qdio_out_q *, int , int);
|
|
|
|
struct qeth_hdr_ext_tso {
|
|
__u16 hdr_tot_len;
|
|
__u8 imb_hdr_no;
|
|
__u8 reserved;
|
|
__u8 hdr_type;
|
|
__u8 hdr_version;
|
|
__u16 hdr_len;
|
|
__u32 payload_len;
|
|
__u16 mss;
|
|
__u16 dg_hdr_len;
|
|
__u8 padding[16];
|
|
} __attribute__ ((packed));
|
|
|
|
struct qeth_hdr_tso {
|
|
struct qeth_hdr hdr; /*hdr->hdr.l3.xxx*/
|
|
struct qeth_hdr_ext_tso ext;
|
|
} __attribute__ ((packed));
|
|
|
|
/*some helper functions*/
|
|
|
|
static inline int
|
|
qeth_get_elements_no(struct qeth_card *card, void *hdr, struct sk_buff *skb)
|
|
{
|
|
int elements_needed = 0;
|
|
|
|
if (skb_shinfo(skb)->nr_frags > 0)
|
|
elements_needed = (skb_shinfo(skb)->nr_frags + 1);
|
|
if (elements_needed == 0 )
|
|
elements_needed = 1 + (((((unsigned long) hdr) % PAGE_SIZE)
|
|
+ skb->len) >> PAGE_SHIFT);
|
|
if (elements_needed > QETH_MAX_BUFFER_ELEMENTS(card)){
|
|
PRINT_ERR("qeth_do_send_packet: invalid size of "
|
|
"IP packet. Discarded.");
|
|
return 0;
|
|
}
|
|
return elements_needed;
|
|
}
|
|
#endif /* __QETH_TSO_H__ */
|