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Date: Thu, 16 Apr 2020 03:27:35 GMT
From: George Spelvin <lkml@....org>
To: Tung Nguyen <tung.q.nguyen@...tech.com.au>,
Jon Maloy <jmaloy@...hat.com>,
Ying Xue <ying.xue@...driver.com>, netdev@...r.kernel.org
Cc: lkml@....org
Subject: [PATCH] tipc: Remove redundant tsk->published flag
It's supposed to always equal !list_empty(tsk->publications),
so just replace it with the latter.
I kept the tipc_sk_dump() output unchanged, but perhaps someone
who understands how that's used better would like to change it
to reflect the simplified structure accurately.
Signed-off-by: George Spelvin <lkml@....org>
Cc: Tung Nguyen <tung.q.nguyen@...tech.com.au>
Cc: Jon Maloy <jmaloy@...hat.com>
Cc: Ying Xue <ying.xue@...driver.com>
Cc: netdev@...r.kernel.org
---
I just happened to be looking at the code and noticed that
tsk->published could be reduced to a bool. Then I noticed that
it could be deleted entirely.
It's a separate patch, but someone might want to move probe_unacked
to be with the rest of the bools so struct tipc_sock packs better.
net/tipc/socket.c | 29 +++++++++++------------------
1 file changed, 11 insertions(+), 18 deletions(-)
diff --git a/net/tipc/socket.c b/net/tipc/socket.c
index 1118e6815256..70cceb1782ff 100644
--- a/net/tipc/socket.c
+++ b/net/tipc/socket.c
@@ -73,7 +73,6 @@ struct sockaddr_pair {
* @sk: socket - interacts with 'port' and with user via the socket API
* @conn_type: TIPC type used when connection was established
* @conn_instance: TIPC instance used when connection was established
- * @published: non-zero if port has one or more associated names
* @max_pkt: maximum packet size "hint" used when building messages sent by port
* @maxnagle: maximum size of msg which can be subject to nagle
* @portid: unique port identity in TIPC socket hash table
@@ -96,7 +95,6 @@ struct tipc_sock {
struct sock sk;
u32 conn_type;
u32 conn_instance;
- int published;
u32 max_pkt;
u32 maxnagle;
u32 portid;
@@ -1412,7 +1410,7 @@ static int __tipc_sendmsg(struct socket *sock, struct msghdr *m, size_t dlen)
return -EPIPE;
if (sk->sk_state != TIPC_OPEN)
return -EISCONN;
- if (tsk->published)
+ if (!list_empty(&tsk->publications))
return -EOPNOTSUPP;
if (dest->addrtype == TIPC_ADDR_NAME) {
tsk->conn_type = dest->addr.name.name.type;
@@ -2824,7 +2822,6 @@ static int tipc_sk_publish(struct tipc_sock *tsk, uint scope,
list_add(&publ->binding_sock, &tsk->publications);
tsk->pub_count++;
- tsk->published = 1;
return 0;
}
@@ -2858,8 +2855,6 @@ static int tipc_sk_withdraw(struct tipc_sock *tsk, uint scope,
publ->upper, publ->key);
rc = 0;
}
- if (list_empty(&tsk->publications))
- tsk->published = 0;
return rc;
}
@@ -3743,7 +3738,6 @@ int tipc_nl_publ_dump(struct sk_buff *skb, struct netlink_callback *cb)
bool tipc_sk_filtering(struct sock *sk)
{
struct tipc_sock *tsk;
- struct publication *p;
u32 _port, _sktype, _type, _lower, _upper;
u32 type = 0, lower = 0, upper = 0;
@@ -3767,14 +3761,12 @@ bool tipc_sk_filtering(struct sock *sk)
if (_sktype && _sktype != sk->sk_type)
return false;
- if (tsk->published) {
- p = list_first_entry_or_null(&tsk->publications,
- struct publication, binding_sock);
- if (p) {
- type = p->type;
- lower = p->lower;
- upper = p->upper;
- }
+ if (!list_empty(&tsk->publications)) {
+ struct publication *p = list_first_entry(&tsk->publications,
+ struct publication, binding_sock);
+ type = p->type;
+ lower = p->lower;
+ upper = p->upper;
}
if (!tipc_sk_type_connectionless(sk)) {
@@ -3847,7 +3839,7 @@ int tipc_sk_dump(struct sock *sk, u16 dqueues, char *buf)
size_t sz = (dqueues) ? SK_LMAX : SK_LMIN;
struct tipc_sock *tsk;
struct publication *p;
- bool tsk_connected;
+ bool tsk_connected, tsk_published;
if (!sk) {
i += scnprintf(buf, sz, "sk data: (null)\n");
@@ -3868,8 +3860,9 @@ int tipc_sk_dump(struct sock *sk, u16 dqueues, char *buf)
i += scnprintf(buf + i, sz - i, " %u", tsk->conn_type);
i += scnprintf(buf + i, sz - i, " %u", tsk->conn_instance);
}
- i += scnprintf(buf + i, sz - i, " | %u", tsk->published);
- if (tsk->published) {
+ tsk_published = !list_empty(&tsk->publications);
+ i += scnprintf(buf + i, sz - i, " | %u", tsk_published);
+ if (tsk_published) {
p = list_first_entry_or_null(&tsk->publications,
struct publication, binding_sock);
i += scnprintf(buf + i, sz - i, " %u", (p) ? p->type : 0);
--
2.26.1
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