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Date: Thu, 4 Jan 2018 15:20:44 +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 1/2] tipc: some clarifying name changes
We rename some functions and variables, to make their purpose clearer.
- tipc_group::congested -> tipc_group::small_win. Members in this list
are not necessarily (and typically) congested. Instead, they may
*potentially* be subject to congestion because their send window is
less than ADV_IDLE, and therefore need to be checked during message
transmission.
- tipc_group_is_receiver() -> tipc_group_is_sender(). This socket will
accept messages coming from members fulfilling this condition, i.e.,
they are senders from this member's viewpoint.
- tipc_group_is_enabled() -> tipc_group_is_receiver(). Members
fulfilling this condition will accept messages sent from the current
socket, i.e., they are receivers from its viewpoint.
There are no functional changes in this commit.
Acked-by: Ying Xue <ying.xue@...driver.com>
Signed-off-by: Jon Maloy <jon.maloy@...csson.com>
---
net/tipc/group.c | 46 +++++++++++++++++++++++-----------------------
1 file changed, 23 insertions(+), 23 deletions(-)
diff --git a/net/tipc/group.c b/net/tipc/group.c
index 5f4ffae..6c99511 100644
--- a/net/tipc/group.c
+++ b/net/tipc/group.c
@@ -64,7 +64,7 @@ enum mbr_state {
struct tipc_member {
struct rb_node tree_node;
struct list_head list;
- struct list_head congested;
+ struct list_head small_win;
struct sk_buff *event_msg;
struct sk_buff_head deferredq;
struct tipc_group *group;
@@ -82,7 +82,7 @@ struct tipc_member {
struct tipc_group {
struct rb_root members;
- struct list_head congested;
+ struct list_head small_win;
struct list_head pending;
struct list_head active;
struct list_head reclaiming;
@@ -137,12 +137,12 @@ u16 tipc_group_bc_snd_nxt(struct tipc_group *grp)
return grp->bc_snd_nxt;
}
-static bool tipc_group_is_enabled(struct tipc_member *m)
+static bool tipc_group_is_receiver(struct tipc_member *m)
{
return m->state != MBR_QUARANTINED && m->state != MBR_LEAVING;
}
-static bool tipc_group_is_receiver(struct tipc_member *m)
+static bool tipc_group_is_sender(struct tipc_member *m)
{
return m && m->state >= MBR_JOINED;
}
@@ -169,7 +169,7 @@ struct tipc_group *tipc_group_create(struct net *net, u32 portid,
if (!grp)
return NULL;
tipc_nlist_init(&grp->dests, tipc_own_addr(net));
- INIT_LIST_HEAD(&grp->congested);
+ INIT_LIST_HEAD(&grp->small_win);
INIT_LIST_HEAD(&grp->active);
INIT_LIST_HEAD(&grp->pending);
INIT_LIST_HEAD(&grp->reclaiming);
@@ -233,7 +233,7 @@ static struct tipc_member *tipc_group_find_dest(struct tipc_group *grp,
struct tipc_member *m;
m = tipc_group_find_member(grp, node, port);
- if (m && tipc_group_is_enabled(m))
+ if (m && tipc_group_is_receiver(m))
return m;
return NULL;
}
@@ -286,7 +286,7 @@ static struct tipc_member *tipc_group_create_member(struct tipc_group *grp,
if (!m)
return NULL;
INIT_LIST_HEAD(&m->list);
- INIT_LIST_HEAD(&m->congested);
+ INIT_LIST_HEAD(&m->small_win);
__skb_queue_head_init(&m->deferredq);
m->group = grp;
m->node = node;
@@ -315,7 +315,7 @@ static void tipc_group_delete_member(struct tipc_group *grp,
grp->bc_ackers--;
list_del_init(&m->list);
- list_del_init(&m->congested);
+ list_del_init(&m->small_win);
tipc_group_decr_active(grp, m);
/* If last member on a node, remove node from dest list */
@@ -344,7 +344,7 @@ void tipc_group_update_member(struct tipc_member *m, int len)
struct tipc_group *grp = m->group;
struct tipc_member *_m, *tmp;
- if (!tipc_group_is_enabled(m))
+ if (!tipc_group_is_receiver(m))
return;
m->window -= len;
@@ -352,16 +352,16 @@ void tipc_group_update_member(struct tipc_member *m, int len)
if (m->window >= ADV_IDLE)
return;
- list_del_init(&m->congested);
+ list_del_init(&m->small_win);
- /* Sort member into congested members' list */
- list_for_each_entry_safe(_m, tmp, &grp->congested, congested) {
+ /* Sort member into small_window members' list */
+ list_for_each_entry_safe(_m, tmp, &grp->small_win, small_win) {
if (m->window > _m->window)
continue;
- list_add_tail(&m->congested, &_m->congested);
+ list_add_tail(&m->small_win, &_m->small_win);
return;
}
- list_add_tail(&m->congested, &grp->congested);
+ list_add_tail(&m->small_win, &grp->small_win);
}
void tipc_group_update_bc_members(struct tipc_group *grp, int len, bool ack)
@@ -373,7 +373,7 @@ void tipc_group_update_bc_members(struct tipc_group *grp, int len, bool ack)
for (n = rb_first(&grp->members); n; n = rb_next(n)) {
m = container_of(n, struct tipc_member, tree_node);
- if (tipc_group_is_enabled(m)) {
+ if (tipc_group_is_receiver(m)) {
tipc_group_update_member(m, len);
m->bc_acked = prev;
ackers++;
@@ -428,10 +428,10 @@ bool tipc_group_bc_cong(struct tipc_group *grp, int len)
if (grp->bc_ackers)
return true;
- if (list_empty(&grp->congested))
+ if (list_empty(&grp->small_win))
return false;
- m = list_first_entry(&grp->congested, struct tipc_member, congested);
+ m = list_first_entry(&grp->small_win, struct tipc_member, small_win);
if (m->window >= len)
return false;
@@ -486,7 +486,7 @@ void tipc_group_filter_msg(struct tipc_group *grp, struct sk_buff_head *inputq,
goto drop;
m = tipc_group_find_member(grp, node, port);
- if (!tipc_group_is_receiver(m))
+ if (!tipc_group_is_sender(m))
goto drop;
if (less(msg_grp_bc_seqno(hdr), m->bc_rcv_nxt))
@@ -703,7 +703,7 @@ void tipc_group_proto_rcv(struct tipc_group *grp, bool *usr_wakeup,
msg_set_grp_bc_seqno(ehdr, m->bc_syncpt);
__skb_queue_tail(inputq, m->event_msg);
}
- list_del_init(&m->congested);
+ list_del_init(&m->small_win);
tipc_group_update_member(m, 0);
return;
case GRP_LEAVE_MSG:
@@ -711,7 +711,7 @@ void tipc_group_proto_rcv(struct tipc_group *grp, bool *usr_wakeup,
return;
m->bc_syncpt = msg_grp_bc_syncpt(hdr);
list_del_init(&m->list);
- list_del_init(&m->congested);
+ list_del_init(&m->small_win);
*usr_wakeup = true;
/* Wait until WITHDRAW event is received */
@@ -731,7 +731,7 @@ void tipc_group_proto_rcv(struct tipc_group *grp, bool *usr_wakeup,
m->window += msg_adv_win(hdr);
*usr_wakeup = m->usr_pending;
m->usr_pending = false;
- list_del_init(&m->congested);
+ list_del_init(&m->small_win);
return;
case GRP_ACK_MSG:
if (!m)
@@ -854,7 +854,7 @@ void tipc_group_member_evt(struct tipc_group *grp,
if (m->window < ADV_IDLE)
tipc_group_update_member(m, 0);
else
- list_del_init(&m->congested);
+ list_del_init(&m->small_win);
} else if (event == TIPC_WITHDRAWN) {
if (!m)
goto drop;
@@ -887,7 +887,7 @@ void tipc_group_member_evt(struct tipc_group *grp,
__skb_queue_tail(inputq, skb);
}
list_del_init(&m->list);
- list_del_init(&m->congested);
+ list_del_init(&m->small_win);
}
*sk_rcvbuf = tipc_group_rcvbuf_limit(grp);
return;
--
2.1.4
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