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| author | Tuong Lien <tuong.t.lien@dektech.com.au> | 2019-07-24 08:56:11 +0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2019-07-25 15:55:47 -0700 |
| commit | 4929a932be334d68d333089872bc67e4f1d97475 (patch) | |
| tree | 23ba2353dfc0edd55b5d640bc3d68595f5abac61 /net/tipc/node.c | |
| parent | 37f7c66f4560b154cfa7a8d8f1902e222e38adba (diff) | |
| download | linux-stable-4929a932be334d68d333089872bc67e4f1d97475.tar.gz linux-stable-4929a932be334d68d333089872bc67e4f1d97475.tar.bz2 linux-stable-4929a932be334d68d333089872bc67e4f1d97475.zip | |
tipc: optimize link synching mechanism
This commit along with the next one are to resolve the issues with the
link changeover mechanism. See that commit for details.
Basically, for the link synching, from now on, we will send only one
single ("dummy") SYNCH message to peer. The SYNCH message does not
contain any data, just a header conveying the synch point to the peer.
A new node capability flag ("TIPC_TUNNEL_ENHANCED") is introduced for
backward compatible!
Acked-by: Ying Xue <ying.xue@windriver.com>
Acked-by: Jon Maloy <jon.maloy@ericsson.com>
Suggested-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Tuong Lien <tuong.t.lien@dektech.com.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc/node.c')
| -rw-r--r-- | net/tipc/node.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/net/tipc/node.c b/net/tipc/node.c index 3a5be1d7e572..7ca019001f7c 100644 --- a/net/tipc/node.c +++ b/net/tipc/node.c @@ -1649,7 +1649,6 @@ static bool tipc_node_check_state(struct tipc_node *n, struct sk_buff *skb, int usr = msg_user(hdr); int mtyp = msg_type(hdr); u16 oseqno = msg_seqno(hdr); - u16 iseqno = msg_seqno(msg_inner_hdr(hdr)); u16 exp_pkts = msg_msgcnt(hdr); u16 rcv_nxt, syncpt, dlv_nxt, inputq_len; int state = n->state; @@ -1748,7 +1747,10 @@ static bool tipc_node_check_state(struct tipc_node *n, struct sk_buff *skb, /* Initiate synch mode if applicable */ if ((usr == TUNNEL_PROTOCOL) && (mtyp == SYNCH_MSG) && (oseqno == 1)) { - syncpt = iseqno + exp_pkts - 1; + if (n->capabilities & TIPC_TUNNEL_ENHANCED) + syncpt = msg_syncpt(hdr); + else + syncpt = msg_seqno(msg_inner_hdr(hdr)) + exp_pkts - 1; if (!tipc_link_is_up(l)) __tipc_node_link_up(n, bearer_id, xmitq); if (n->state == SELF_UP_PEER_UP) { |