drivers/s390/net/qeth_core_offl.h

   1 /*
   2  *  drivers/s390/net/qeth_core_offl.h
   3  *
   4  *    Copyright IBM Corp. 2007
   5  *    Author(s): Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #ifndef __QETH_CORE_OFFL_H__
  10 #define __QETH_CORE_OFFL_H__
  11
  12 struct qeth_eddp_element {
  13         u32 flags;
  14         u32 length;
  15         void *addr;
  16 };
  17
  18 struct qeth_eddp_context {
  19         atomic_t refcnt;
  20         enum qeth_large_send_types type;
  21         int num_pages;                      /* # of allocated pages */
  22         u8 **pages;                         /* pointers to pages */
  23         int offset;                         /* offset in ctx during creation */
  24         int num_elements;                   /* # of required 'SBALEs' */
  25         struct qeth_eddp_element *elements; /* array of 'SBALEs' */
  26         int elements_per_skb;               /* # of 'SBALEs' per skb **/
  27 };
  28
  29 struct qeth_eddp_context_reference {
  30         struct list_head list;
  31         struct qeth_eddp_context *ctx;
  32 };
  33
  34 struct qeth_eddp_data {
  35         struct qeth_hdr qh;
  36         struct ethhdr mac;
  37         __be16 vlan[2];
  38         union {
  39                 struct {
  40                         struct iphdr h;
  41                         u8 options[40];
  42                 } ip4;
  43                 struct {
  44                         struct ipv6hdr h;
  45                 } ip6;
  46         } nh;
  47         u8 nhl;
  48         void *nh_in_ctx;        /* address of nh within the ctx */
  49         union {
  50                 struct {
  51                         struct tcphdr h;
  52                         u8 options[40];
  53                 } tcp;
  54         } th;
  55         u8 thl;
  56         void *th_in_ctx;        /* address of th within the ctx */
  57         struct sk_buff *skb;
  58         int skb_offset;
  59         int frag;
  60         int frag_offset;
  61 } __attribute__ ((packed));
  62
  63 extern struct qeth_eddp_context *qeth_eddp_create_context(struct qeth_card *,
  64                  struct sk_buff *, struct qeth_hdr *, unsigned char);
  65 extern void qeth_eddp_put_context(struct qeth_eddp_context *);
  66 extern int qeth_eddp_fill_buffer(struct qeth_qdio_out_q *,
  67                 struct qeth_eddp_context *, int);
  68 extern void qeth_eddp_buf_release_contexts(struct qeth_qdio_out_buffer *);
  69 extern int qeth_eddp_check_buffers_for_context(struct qeth_qdio_out_q *,
  70                 struct qeth_eddp_context *);
  71
  72 void qeth_tso_fill_header(struct qeth_card *, struct qeth_hdr *,
  73                 struct sk_buff *);
  74 void qeth_tx_csum(struct sk_buff *skb);
  75
  76 #endif /* __QETH_CORE_EDDP_H__ */