From: Patrick McHardy <kaber@trash.net>
To: davem@davemloft.net
Cc: netfilter-devel@vger.kernel.org, netdev@vger.kernel.org
Subject: [PATCH 01/14] netlink: add symbolic value for congested state
Date: Wed, 17 Apr 2013 18:46:56 +0200 [thread overview]
Message-ID: <1366217229-22705-2-git-send-email-kaber@trash.net> (raw)
In-Reply-To: <1366217229-22705-1-git-send-email-kaber@trash.net>
Signed-off-by: Patrick McHardy <kaber@trash.net>
---
net/netlink/af_netlink.c | 18 +++++++++++-------
1 file changed, 11 insertions(+), 7 deletions(-)
diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index ce2e006..f20a810 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -68,6 +68,10 @@ struct listeners {
unsigned long masks[0];
};
+/* state bits */
+#define NETLINK_CONGESTED 0x0
+
+/* flags */
#define NETLINK_KERNEL_SOCKET 0x1
#define NETLINK_RECV_PKTINFO 0x2
#define NETLINK_BROADCAST_SEND_ERROR 0x4
@@ -727,7 +731,7 @@ static void netlink_overrun(struct sock *sk)
struct netlink_sock *nlk = nlk_sk(sk);
if (!(nlk->flags & NETLINK_RECV_NO_ENOBUFS)) {
- if (!test_and_set_bit(0, &nlk_sk(sk)->state)) {
+ if (!test_and_set_bit(NETLINK_CONGESTED, &nlk_sk(sk)->state)) {
sk->sk_err = ENOBUFS;
sk->sk_error_report(sk);
}
@@ -788,7 +792,7 @@ int netlink_attachskb(struct sock *sk, struct sk_buff *skb,
nlk = nlk_sk(sk);
if (atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf ||
- test_bit(0, &nlk->state)) {
+ test_bit(NETLINK_CONGESTED, &nlk->state)) {
DECLARE_WAITQUEUE(wait, current);
if (!*timeo) {
if (!ssk || netlink_is_kernel(ssk))
@@ -802,7 +806,7 @@ int netlink_attachskb(struct sock *sk, struct sk_buff *skb,
add_wait_queue(&nlk->wait, &wait);
if ((atomic_read(&sk->sk_rmem_alloc) > sk->sk_rcvbuf ||
- test_bit(0, &nlk->state)) &&
+ test_bit(NETLINK_CONGESTED, &nlk->state)) &&
!sock_flag(sk, SOCK_DEAD))
*timeo = schedule_timeout(*timeo);
@@ -872,8 +876,8 @@ static void netlink_rcv_wake(struct sock *sk)
struct netlink_sock *nlk = nlk_sk(sk);
if (skb_queue_empty(&sk->sk_receive_queue))
- clear_bit(0, &nlk->state);
- if (!test_bit(0, &nlk->state))
+ clear_bit(NETLINK_CONGESTED, &nlk->state);
+ if (!test_bit(NETLINK_CONGESTED, &nlk->state))
wake_up_interruptible(&nlk->wait);
}
@@ -957,7 +961,7 @@ static int netlink_broadcast_deliver(struct sock *sk, struct sk_buff *skb)
struct netlink_sock *nlk = nlk_sk(sk);
if (atomic_read(&sk->sk_rmem_alloc) <= sk->sk_rcvbuf &&
- !test_bit(0, &nlk->state)) {
+ !test_bit(NETLINK_CONGESTED, &nlk->state)) {
skb_set_owner_r(skb, sk);
__netlink_sendskb(sk, skb);
return atomic_read(&sk->sk_rmem_alloc) > (sk->sk_rcvbuf >> 1);
@@ -1235,7 +1239,7 @@ static int netlink_setsockopt(struct socket *sock, int level, int optname,
case NETLINK_NO_ENOBUFS:
if (val) {
nlk->flags |= NETLINK_RECV_NO_ENOBUFS;
- clear_bit(0, &nlk->state);
+ clear_bit(NETLINK_CONGESTED, &nlk->state);
wake_up_interruptible(&nlk->wait);
} else {
nlk->flags &= ~NETLINK_RECV_NO_ENOBUFS;
--
1.8.1.4
next prev parent reply other threads:[~2013-04-17 16:47 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-17 16:46 [PATCH 00/14]: netlink: memory mapped I/O Patrick McHardy
2013-04-17 16:46 ` Patrick McHardy [this message]
2013-04-19 13:24 ` [PATCH 01/14] netlink: add symbolic value for congested state Sergei Shtylyov
2013-04-17 16:46 ` [PATCH 02/14] netlink: rename ssk to sk in struct netlink_skb_params Patrick McHardy
2013-04-17 16:46 ` [PATCH 03/14] net: add function to allocate sk_buff head without data area Patrick McHardy
2013-04-17 16:46 ` [PATCH 04/14] netlink: don't orphan skb in netlink_trim() Patrick McHardy
2013-04-17 16:47 ` [PATCH 05/14] netlink: add netlink_skb_set_owner_r() Patrick McHardy
2013-04-17 16:47 ` [PATCH 06/14] netlink: mmaped netlink: ring setup Patrick McHardy
2013-04-17 16:47 ` [PATCH 07/14] netlink: add mmap'ed netlink helper functions Patrick McHardy
2013-04-17 16:47 ` [PATCH 08/14] netlink: implement memory mapped sendmsg() Patrick McHardy
2013-04-17 22:57 ` Ben Hutchings
2013-04-18 10:31 ` Patrick McHardy
2013-04-18 16:26 ` Ben Hutchings
2013-04-19 11:04 ` Patrick McHardy
2013-04-17 16:47 ` [PATCH 09/14] netlink: implement memory mapped recvmsg() Patrick McHardy
2013-04-17 16:47 ` [PATCH 10/14] netlink: add flow control for memory mapped I/O Patrick McHardy
2013-04-17 16:47 ` [PATCH 11/14] netlink: add RX/TX-ring support to netlink diag Patrick McHardy
2013-04-23 18:28 ` Christoph Paasch
2013-04-23 19:23 ` David Miller
2013-04-23 19:43 ` Christoph Paasch
2013-04-17 16:47 ` [PATCH 12/14] netlink: add documentation for memory mapped I/O Patrick McHardy
2013-04-17 17:51 ` Daniel Borkmann
2013-04-17 18:08 ` Patrick McHardy
2013-04-17 18:56 ` Daniel Borkmann
2013-04-22 18:28 ` Andi Kleen
2013-04-17 16:47 ` [PATCH 13/14] netfilter: rename netlink related "pid" variables to "portid" Patrick McHardy
2013-04-17 16:47 ` [PATCH 14/14] nfnetlink: add support for memory mapped netlink Patrick McHardy
[not found] ` <CAED+v=bCkEa8gOO9pu62hmj_H9WXz4+OBiCeyxBUO10L9EdDkA@mail.gmail.com>
2013-04-24 14:44 ` Nishit Shah
2013-04-24 15:15 ` Florian Westphal
2013-04-17 19:40 ` [PATCH 00/14]: netlink: memory mapped I/O Florian Westphal
2013-04-18 10:27 ` Patrick McHardy
2013-04-18 11:01 ` Florian Westphal
2013-04-18 11:11 ` Patrick McHardy
2013-04-18 14:57 ` Eric Dumazet
2013-04-19 19:51 ` David Miller
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