diff options
Diffstat (limited to 'net/tipc/msg.h')
| -rw-r--r-- | net/tipc/msg.h | 112 |
1 files changed, 78 insertions, 34 deletions
diff --git a/net/tipc/msg.h b/net/tipc/msg.h index 19c45fb66238..a82c5848d4bc 100644 --- a/net/tipc/msg.h +++ b/net/tipc/msg.h @@ -38,6 +38,7 @@ #define _TIPC_MSG_H #include <linux/tipc.h> +#include "core.h" /* * Constants and routines used to read and write TIPC payload message headers @@ -109,7 +110,6 @@ struct tipc_skb_cb { struct sk_buff *tail; bool validated; bool wakeup_pending; - bool bundling; u16 chain_sz; u16 chain_imp; }; @@ -558,15 +558,6 @@ static inline void msg_set_node_capabilities(struct tipc_msg *m, u32 n) msg_set_bits(m, 1, 15, 0x1fff, n); } -static inline bool msg_dup(struct tipc_msg *m) -{ - if (likely(msg_user(m) != TUNNEL_PROTOCOL)) - return false; - if (msg_type(m) != SYNCH_MSG) - return false; - return true; -} - /* * Word 2 */ @@ -620,12 +611,12 @@ static inline void msg_set_fragm_no(struct tipc_msg *m, u32 n) } -static inline u32 msg_next_sent(struct tipc_msg *m) +static inline u16 msg_next_sent(struct tipc_msg *m) { return msg_bits(m, 4, 0, 0xffff); } -static inline void msg_set_next_sent(struct tipc_msg *m, u32 n) +static inline void msg_set_next_sent(struct tipc_msg *m, u16 n) { msg_set_bits(m, 4, 0, 0xffff, n); } @@ -658,12 +649,12 @@ static inline void msg_set_link_selector(struct tipc_msg *m, u32 n) /* * Word 5 */ -static inline u32 msg_session(struct tipc_msg *m) +static inline u16 msg_session(struct tipc_msg *m) { return msg_bits(m, 5, 16, 0xffff); } -static inline void msg_set_session(struct tipc_msg *m, u32 n) +static inline void msg_set_session(struct tipc_msg *m, u16 n) { msg_set_bits(m, 5, 16, 0xffff, n); } @@ -726,12 +717,12 @@ static inline char *msg_media_addr(struct tipc_msg *m) /* * Word 9 */ -static inline u32 msg_msgcnt(struct tipc_msg *m) +static inline u16 msg_msgcnt(struct tipc_msg *m) { return msg_bits(m, 9, 16, 0xffff); } -static inline void msg_set_msgcnt(struct tipc_msg *m, u32 n) +static inline void msg_set_msgcnt(struct tipc_msg *m, u16 n) { msg_set_bits(m, 9, 16, 0xffff, n); } @@ -766,10 +757,25 @@ static inline void msg_set_link_tolerance(struct tipc_msg *m, u32 n) msg_set_bits(m, 9, 0, 0xffff, n); } +static inline bool msg_peer_link_is_up(struct tipc_msg *m) +{ + if (likely(msg_user(m) != LINK_PROTOCOL)) + return true; + if (msg_type(m) == STATE_MSG) + return true; + return false; +} + +static inline bool msg_peer_node_is_up(struct tipc_msg *m) +{ + if (msg_peer_link_is_up(m)) + return true; + return msg_redundant_link(m); +} + struct sk_buff *tipc_buf_acquire(u32 size); bool tipc_msg_validate(struct sk_buff *skb); -bool tipc_msg_reverse(u32 own_addr, struct sk_buff *buf, u32 *dnode, - int err); +bool tipc_msg_reverse(u32 own_addr, struct sk_buff **skb, int err); void tipc_msg_init(u32 own_addr, 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, @@ -782,8 +788,7 @@ bool tipc_msg_make_bundle(struct sk_buff **skb, struct tipc_msg *msg, bool tipc_msg_extract(struct sk_buff *skb, struct sk_buff **iskb, int *pos); int tipc_msg_build(struct tipc_msg *mhdr, struct msghdr *m, int offset, int dsz, int mtu, struct sk_buff_head *list); -bool tipc_msg_lookup_dest(struct net *net, struct sk_buff *skb, u32 *dnode, - int *err); +bool tipc_msg_lookup_dest(struct net *net, struct sk_buff *skb, int *err); struct sk_buff *tipc_msg_reassemble(struct sk_buff_head *list); static inline u16 buf_seqno(struct sk_buff *skb) @@ -857,26 +862,65 @@ static inline struct sk_buff *tipc_skb_dequeue(struct sk_buff_head *list, return skb; } -/* tipc_skb_queue_tail(): add buffer to tail of list; +/* tipc_skb_queue_sorted(); sort pkt into list according to sequence number * @list: list to be appended to - * @skb: buffer to append. Always appended - * @dport: the destination port of the buffer - * returns true if dport differs from previous destination + * @skb: buffer to add + * Returns true if queue should treated further, otherwise false */ -static inline bool tipc_skb_queue_tail(struct sk_buff_head *list, - struct sk_buff *skb, u32 dport) +static inline bool __tipc_skb_queue_sorted(struct sk_buff_head *list, + struct sk_buff *skb) { - struct sk_buff *_skb = NULL; - bool rv = false; + struct sk_buff *_skb, *tmp; + struct tipc_msg *hdr = buf_msg(skb); + u16 seqno = msg_seqno(hdr); - spin_lock_bh(&list->lock); - _skb = skb_peek_tail(list); - if (!_skb || (msg_destport(buf_msg(_skb)) != dport) || - (skb_queue_len(list) > 32)) - rv = true; + if (skb_queue_empty(list) || (msg_user(hdr) == LINK_PROTOCOL)) { + __skb_queue_head(list, skb); + return true; + } + if (likely(less(seqno, buf_seqno(skb_peek(list))))) { + __skb_queue_head(list, skb); + return true; + } + if (!more(seqno, buf_seqno(skb_peek_tail(list)))) { + skb_queue_walk_safe(list, _skb, tmp) { + if (likely(less(seqno, buf_seqno(_skb)))) { + __skb_queue_before(list, _skb, skb); + return true; + } + } + } __skb_queue_tail(list, skb); + return false; +} + +/* tipc_skb_queue_splice_tail - append an skb list to lock protected list + * @list: the new list to append. Not lock protected + * @head: target list. Lock protected. + */ +static inline void tipc_skb_queue_splice_tail(struct sk_buff_head *list, + struct sk_buff_head *head) +{ + spin_lock_bh(&head->lock); + skb_queue_splice_tail(list, head); + spin_unlock_bh(&head->lock); +} + +/* tipc_skb_queue_splice_tail_init - merge two lock protected skb lists + * @list: the new list to add. Lock protected. Will be reinitialized + * @head: target list. Lock protected. + */ +static inline void tipc_skb_queue_splice_tail_init(struct sk_buff_head *list, + struct sk_buff_head *head) +{ + struct sk_buff_head tmp; + + __skb_queue_head_init(&tmp); + + spin_lock_bh(&list->lock); + skb_queue_splice_tail_init(list, &tmp); spin_unlock_bh(&list->lock); - return rv; + tipc_skb_queue_splice_tail(&tmp, head); } #endif |