diff options
Diffstat (limited to 'net/tipc/msg.h')
| -rw-r--r-- | net/tipc/msg.h | 37 |
1 files changed, 29 insertions, 8 deletions
diff --git a/net/tipc/msg.h b/net/tipc/msg.h index 1a52f7cf3cd3..0065a2e8ad9b 100644 --- a/net/tipc/msg.h +++ b/net/tipc/msg.h @@ -77,10 +77,38 @@ #define TIPC_MEDIA_ADDR_OFFSET 5 +/** + * TIPC message buffer code + * + * TIPC message buffer headroom reserves space for the worst-case + * link-level device header (in case the message is sent off-node). + * + * Note: Headroom should be a multiple of 4 to ensure the TIPC header fields + * are word aligned for quicker access + */ +#define BUF_HEADROOM LL_MAX_HEADER + +struct tipc_skb_cb { + void *handle; + struct sk_buff *tail; + bool deferred; + bool wakeup_pending; + bool bundling; + u16 chain_sz; + u16 chain_imp; +}; + +#define TIPC_SKB_CB(__skb) ((struct tipc_skb_cb *)&((__skb)->cb[0])) + struct tipc_msg { __be32 hdr[15]; }; +static inline struct tipc_msg *buf_msg(struct sk_buff *skb) +{ + return (struct tipc_msg *)skb->data; +} + static inline u32 msg_word(struct tipc_msg *m, u32 pos) { return ntohl(m->hdr[pos]); @@ -719,27 +747,20 @@ static inline u32 msg_tot_origport(struct tipc_msg *m) return msg_origport(m); } +struct sk_buff *tipc_buf_acquire(u32 size); bool tipc_msg_reverse(struct sk_buff *buf, u32 *dnode, int err); - int tipc_msg_eval(struct sk_buff *buf, u32 *dnode); - void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type, u32 hsize, u32 destnode); - struct sk_buff *tipc_msg_create(uint user, uint type, uint hdr_sz, uint data_sz, u32 dnode, u32 onode, u32 dport, u32 oport, int errcode); - int tipc_buf_append(struct sk_buff **headbuf, struct sk_buff **buf); - bool tipc_msg_bundle(struct sk_buff_head *list, struct sk_buff *skb, u32 mtu); - bool tipc_msg_make_bundle(struct sk_buff_head *list, struct sk_buff *skb, u32 mtu, u32 dnode); - int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m, int offset, int dsz, int mtu, struct sk_buff_head *list); - struct sk_buff *tipc_msg_reassemble(struct sk_buff_head *list); #endif |