netdev - [net-next 3/9] tipc: adjustment to group member FSM

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Message-ID: <1515440080-27377-4-git-send-email-jon.maloy@ericsson.com>
Date:   Mon, 8 Jan 2018 20:34:34 +0100
From:   Jon Maloy <jon.maloy@...csson.com>
To:     <davem@...emloft.net>, <netdev@...r.kernel.org>
CC:     <mohan.krishna.ghanta.krishnamurthy@...csson.com>,
        <tung.q.nguyen@...tech.com.au>, <hoang.h.le@...tech.com.au>,
        <jon.maloy@...csson.com>, <canh.d.luu@...tech.com.au>,
        <ying.xue@...driver.com>, <tipc-discussion@...ts.sourceforge.net>
Subject: [net-next 3/9] tipc: adjustment to group member FSM

Analysis reveals that the member state MBR_QURANTINED in reality is
unnecessary, and can be replaced by the state MBR_JOINING at all
occurrencs.

Acked-by: Ying Xue <ying.xue@...driver.com>
Signed-off-by: Jon Maloy <jon.maloy@...csson.com>
---
 net/tipc/group.c | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/net/tipc/group.c b/net/tipc/group.c
index 652fa66..a352e09 100644
--- a/net/tipc/group.c
+++ b/net/tipc/group.c
@@ -49,7 +49,6 @@
 #define ADV_ACTIVE (ADV_UNIT * 12)
 
 enum mbr_state {
-	MBR_QUARANTINED,
 	MBR_DISCOVERED,
 	MBR_JOINING,
 	MBR_PUBLISHED,
@@ -138,7 +137,7 @@ u16 tipc_group_bc_snd_nxt(struct tipc_group *grp)
 
 static bool tipc_group_is_receiver(struct tipc_member *m)
 {
-	return m->state != MBR_QUARANTINED && m->state != MBR_LEAVING;
+	return m && m->state != MBR_JOINING && m->state != MBR_LEAVING;
 }
 
 static bool tipc_group_is_sender(struct tipc_member *m)
@@ -690,7 +689,7 @@ void tipc_group_proto_rcv(struct tipc_group *grp, bool *usr_wakeup,
 	case GRP_JOIN_MSG:
 		if (!m)
 			m = tipc_group_create_member(grp, node, port,
-						     MBR_QUARANTINED);
+						     MBR_JOINING);
 		if (!m)
 			return;
 		m->bc_syncpt = msg_grp_bc_syncpt(hdr);
-- 
2.1.4