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authorAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-12-15 14:52:16 -0300
committerAndré Fabian Silva Delgado <emulatorman@parabola.nu>2015-12-15 14:52:16 -0300
commit8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be (patch)
treee9891aa6c295060d065adffd610c4f49ecf884f3 /net/tipc/msg.h
parenta71852147516bc1cb5b0b3cbd13639bfd4022dc8 (diff)
Linux-libre 4.3.2-gnu
Diffstat (limited to 'net/tipc/msg.h')
-rw-r--r--net/tipc/msg.h112
1 files changed, 78 insertions, 34 deletions
diff --git a/net/tipc/msg.h b/net/tipc/msg.h
index 49f9a9648..5351a3f97 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