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authorUrsula Braun <braunu@de.ibm.com>2007-10-08 02:03:31 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-10-10 16:54:51 -0700
commitf0703c80e5156406ad947cb67fe277725b48080f (patch)
tree428f16c8e188763cfa2cadc26708bf785a8958b8 /include
parent[AF_IUCV]: remove static declarations from header file. (diff)
downloadlinux-dev-f0703c80e5156406ad947cb67fe277725b48080f.tar.xz
linux-dev-f0703c80e5156406ad947cb67fe277725b48080f.zip
[AF_IUCV]: postpone receival of iucv-packets
AF_IUCV socket programs may waste Linux storage, because af_iucv allocates an skb whenever posted by the receive callback routine and receives the message immediately. Message receival is now postponed if data from previous callbacks has not yet been transferred to the receiving socket program. Instead a message handle is saved in a message queue as a reminder. Once messages could be given to the receiving socket program, there is an additional checking for entries in the message queue, followed by skb allocation and message receival if applicable. Signed-off-by: Ursula Braun <braunu@de.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/net/iucv/af_iucv.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/include/net/iucv/af_iucv.h b/include/net/iucv/af_iucv.h
index 2ce0c901eadf..85f80eadfa35 100644
--- a/include/net/iucv/af_iucv.h
+++ b/include/net/iucv/af_iucv.h
@@ -50,6 +50,12 @@ struct sockaddr_iucv {
/* Common socket structures and functions */
+struct sock_msg_q {
+ struct iucv_path *path;
+ struct iucv_message msg;
+ struct list_head list;
+ spinlock_t lock;
+};
#define iucv_sk(__sk) ((struct iucv_sock *) __sk)
@@ -65,6 +71,7 @@ struct iucv_sock {
struct iucv_path *path;
struct sk_buff_head send_skb_q;
struct sk_buff_head backlog_skb_q;
+ struct sock_msg_q message_q;
unsigned int send_tag;
};