xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

tipc: make resetting of links non-atomic

Browse Source 
In order to facilitate future improvements to the locking structure, we
want to make resetting and establishing of links non-atomic. I.e., the
functions tipc_node_link_up() and tipc_node_link_down() should be called
from outside the node lock context, and grab/release the node lock
themselves. This requires that we can freeze the link state from the
moment it is set to RESETTING or PEER_RESET in one lock context until
it is set to RESET or ESTABLISHING in a later context. The recently
introduced link FSM makes this possible, so we are now ready to introduce
the above change.

This commit implements this.

Tested-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jon Paul Maloy
2015-07-30 18:24:23 -04:00
committed by David S. Miller
parent cf148816ac
commit 598411d70f
3 changed files with 127 additions and 70 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
net/tipc/link.c
View File

@@ -489,8 +489,8 @@ int tipc_link_timeout(struct tipc_link *l, struct sk_buff_head *xmitq)
xmit = true;
mtyp = ACTIVATE_MSG;
break;
case LINK_RESETTING:
case LINK_PEER_RESET:
case LINK_RESETTING:
case LINK_FAILINGOVER:
break;
default: