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86 lines
1.9 KiB
86 lines
1.9 KiB
20 years ago
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/*
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* linux/drivers/s390/net/qeth_eddp.c ($Revision: 1.5 $)
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*
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* Header file for qeth enhanced device driver pakcing.
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*
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* Copyright 2004 IBM Corporation
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*
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* Author(s): Thomas Spatzier <tspat@de.ibm.com>
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*
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* $Revision: 1.5 $ $Date: 2005/03/24 09:04:18 $
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*
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*/
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#ifndef __QETH_EDDP_H__
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#define __QETH_EDDP_H__
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struct qeth_eddp_element {
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u32 flags;
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u32 length;
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void *addr;
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};
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struct qeth_eddp_context {
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atomic_t refcnt;
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enum qeth_large_send_types type;
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int num_pages; /* # of allocated pages */
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u8 **pages; /* pointers to pages */
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int offset; /* offset in ctx during creation */
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int num_elements; /* # of required 'SBALEs' */
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struct qeth_eddp_element *elements; /* array of 'SBALEs' */
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int elements_per_skb; /* # of 'SBALEs' per skb **/
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};
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struct qeth_eddp_context_reference {
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struct list_head list;
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struct qeth_eddp_context *ctx;
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};
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extern struct qeth_eddp_context *
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qeth_eddp_create_context(struct qeth_card *,struct sk_buff *,struct qeth_hdr *);
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extern void
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qeth_eddp_put_context(struct qeth_eddp_context *);
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extern int
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qeth_eddp_fill_buffer(struct qeth_qdio_out_q *,struct qeth_eddp_context *,int);
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extern void
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qeth_eddp_buf_release_contexts(struct qeth_qdio_out_buffer *);
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extern int
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qeth_eddp_check_buffers_for_context(struct qeth_qdio_out_q *,
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struct qeth_eddp_context *);
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/*
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* Data used for fragmenting a IP packet.
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*/
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struct qeth_eddp_data {
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struct qeth_hdr qh;
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struct ethhdr mac;
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u16 vlan[2];
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union {
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struct {
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struct iphdr h;
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u8 options[40];
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} ip4;
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struct {
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struct ipv6hdr h;
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} ip6;
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} nh;
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u8 nhl;
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void *nh_in_ctx; /* address of nh within the ctx */
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union {
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struct {
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struct tcphdr h;
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u8 options[40];
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} tcp;
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} th;
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u8 thl;
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void *th_in_ctx; /* address of th within the ctx */
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struct sk_buff *skb;
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int skb_offset;
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int frag;
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int frag_offset;
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} __attribute__ ((packed));
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#endif /* __QETH_EDDP_H__ */
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