diff options
Diffstat (limited to 'drivers/s390/net/qeth_eddp.h')
-rw-r--r-- | drivers/s390/net/qeth_eddp.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/drivers/s390/net/qeth_eddp.h b/drivers/s390/net/qeth_eddp.h new file mode 100644 index 00000000000..e1b51860bc5 --- /dev/null +++ b/drivers/s390/net/qeth_eddp.h @@ -0,0 +1,85 @@ +/* + * linux/drivers/s390/net/qeth_eddp.c ($Revision: 1.5 $) + * + * Header file for qeth enhanced device driver pakcing. + * + * Copyright 2004 IBM Corporation + * + * Author(s): Thomas Spatzier <tspat@de.ibm.com> + * + * $Revision: 1.5 $ $Date: 2005/03/24 09:04:18 $ + * + */ +#ifndef __QETH_EDDP_H__ +#define __QETH_EDDP_H__ + +struct qeth_eddp_element { + u32 flags; + u32 length; + void *addr; +}; + +struct qeth_eddp_context { + atomic_t refcnt; + enum qeth_large_send_types type; + int num_pages; /* # of allocated pages */ + u8 **pages; /* pointers to pages */ + int offset; /* offset in ctx during creation */ + int num_elements; /* # of required 'SBALEs' */ + struct qeth_eddp_element *elements; /* array of 'SBALEs' */ + int elements_per_skb; /* # of 'SBALEs' per skb **/ +}; + +struct qeth_eddp_context_reference { + struct list_head list; + struct qeth_eddp_context *ctx; +}; + +extern struct qeth_eddp_context * +qeth_eddp_create_context(struct qeth_card *,struct sk_buff *,struct qeth_hdr *); + +extern void +qeth_eddp_put_context(struct qeth_eddp_context *); + +extern int +qeth_eddp_fill_buffer(struct qeth_qdio_out_q *,struct qeth_eddp_context *,int); + +extern void +qeth_eddp_buf_release_contexts(struct qeth_qdio_out_buffer *); + +extern int +qeth_eddp_check_buffers_for_context(struct qeth_qdio_out_q *, + struct qeth_eddp_context *); +/* + * Data used for fragmenting a IP packet. + */ +struct qeth_eddp_data { + struct qeth_hdr qh; + struct ethhdr mac; + u16 vlan[2]; + union { + struct { + struct iphdr h; + u8 options[40]; + } ip4; + struct { + struct ipv6hdr h; + } ip6; + } nh; + u8 nhl; + void *nh_in_ctx; /* address of nh within the ctx */ + union { + struct { + struct tcphdr h; + u8 options[40]; + } tcp; + } th; + u8 thl; + void *th_in_ctx; /* address of th within the ctx */ + struct sk_buff *skb; + int skb_offset; + int frag; + int frag_offset; +} __attribute__ ((packed)); + +#endif /* __QETH_EDDP_H__ */ |