From: Allan Stephens Date: Mon, 28 Feb 2011 15:56:23 +0000 (-0500) Subject: tipc: Give Tx of discovery responses priority over link messages X-Git-Tag: v2.6.39-rc1~468^2~60^2~9 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fa2bae2d5bede252445cc457737d00f9036c41c3;p=profile%2Fivi%2Fkernel-adaptation-intel-automotive.git tipc: Give Tx of discovery responses priority over link messages Delay releasing the node lock when processing a neighbor discovery message until after the optional discovery response message has been sent. This helps ensure that any link protocol messages sent by a link endpoint created as a result of a neighbor discovery request are received after the discovery response is received, thereby giving the receiving node a chance to create a peer link endpoint to consume those link protocol messages, if one does not already exist. Signed-off-by: Allan Stephens Signed-off-by: Paul Gortmaker --- diff --git a/net/tipc/discover.c b/net/tipc/discover.c index 2345268..580b50a 100644 --- a/net/tipc/discover.c +++ b/net/tipc/discover.c @@ -201,14 +201,16 @@ void tipc_disc_recv_msg(struct sk_buff *buf, struct tipc_bearer *b_ptr) /* Accept discovery message & send response, if necessary */ link_fully_up = link_working_working(link); - tipc_node_unlock(n_ptr); - if ((type == DSC_RESP_MSG) || link_fully_up) - return; - rbuf = tipc_disc_init_msg(DSC_RESP_MSG, orig, b_ptr); - if (rbuf != NULL) { - b_ptr->media->send_msg(rbuf, b_ptr, &media_addr); - buf_discard(rbuf); + + if ((type == DSC_REQ_MSG) && !link_fully_up) { + rbuf = tipc_disc_init_msg(DSC_RESP_MSG, orig, b_ptr); + if (rbuf) { + b_ptr->media->send_msg(rbuf, b_ptr, &media_addr); + buf_discard(rbuf); + } } + + tipc_node_unlock(n_ptr); } /**