author: Ying Xue <ying.xue@windriver.com> 2012-08-16 12:09:12 +0000
committer: David S. Miller <davem@davemloft.net> 2012-08-20 02:26:31 -0700
commit: 61cdd4d80b29cfdee45920238eea2d1fbb51f922 (patch)
tree: 44df7d9694b581afae71955030ffbad25a4aee15 /net/tipc
parent: f046e7d9be1cbb3335694c7f9a31d18e1f998ff5 ([ Upstream commit 57031eb794906eea4e1c7b31dc1e2429c0af0c66 ] Link layer protocols may unconditionally pull headers, as Ethernet does in eth_type_trans. Ensure that the entire link layer header always lies in the skb linear segment. tpacket_snd has such a check. Extend this to packet_snd. Variable length link layer headers complicate the computation somewhat. Here skb->len may be smaller than dev->hard_header_len. Round up the linear length to be at least as long as the smallest of the two. Reported-by: Dmitry Vyukov <dvyukov@google.com> Signed-off-by: Willem de Bruijn <willemb@google.com> Acked-by: Eric Dumazet <edumazet@google.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> ould cause cacheline bouncing. Signed-off-by: Ying Xue <ying.xue@windriver.com> Signed-off-by: Jon Maloy <jon.maloy@ericsson.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc')
-rw-r--r-- net/tipc/core.c 10

-rw-r--r-- net/tipc/core.h 10

-rw-r--r-- net/tipc/handler.c 2

3 files changed, 11 insertions, 11 deletions
diff --git a/net/tipc/core.c b/net/tipc/core.c
index daae7f74d418e4..b858f2003523e7 100644
--- a/net/tipc/core.c
+++ b/net/tipc/core.c
@@ -48,15 +48,15 @@

/* global variables used by multiple sub-systems within TIPC */
-int tipc_random;
+int tipc_random __read_mostly;

/* configurable TIPC parameters */
-u32 tipc_own_addr;
-int tipc_max_ports;
+u32 tipc_own_addr __read_mostly;
+int tipc_max_ports __read_mostly;
int tipc_max_subscriptions;
int tipc_max_publications;
-int tipc_net_id;
-int tipc_remote_management;
+int tipc_net_id __read_mostly;
+int tipc_remote_management __read_mostly;

/**
diff --git a/net/tipc/core.h b/net/tipc/core.h
index e4e46cd2d0e671..4c5705ac8a5a3c 100644
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -74,17 +74,17 @@ int tipc_snprintf(char *buf, int len, const char *fmt, ...);
/*
* Global configuration variables
*/
-extern u32 tipc_own_addr;
-extern int tipc_max_ports;
+extern u32 tipc_own_addr __read_mostly;
+extern int tipc_max_ports __read_mostly;
extern int tipc_max_subscriptions;
extern int tipc_max_publications;
-extern int tipc_net_id;
-extern int tipc_remote_management;
+extern int tipc_net_id __read_mostly;
+extern int tipc_remote_management __read_mostly;

/*
* Other global variables
*/
-extern int tipc_random;
+extern int tipc_random __read_mostly;

/*
* Routines available to privileged subsystems
diff --git a/net/tipc/handler.c b/net/tipc/handler.c
index 7a52d3922f3c2b..111ff8300ae52e 100644
--- a/net/tipc/handler.c
+++ b/net/tipc/handler.c
@@ -45,7 +45,7 @@ struct queue_item {
static struct kmem_cache *tipc_queue_item_cache;
static struct list_head signal_queue_head;
static DEFINE_SPINLOCK(qitem_lock);
-static int handler_enabled;
+static int handler_enabled __read_mostly;

static void process_signal_queue(unsigned long dummy);

generated by cgit 1.2.3-korg (git 2.43.0) at 2025-12-09 07:42:10 +0000 -rw-r--r-- net/tipc/core.c 10 -rw-r--r-- net/tipc/core.h 10 -rw-r--r-- net/tipc/handler.c 2 diff --git a/net/tipc/core.c b/net/tipc/core.c
index daae7f74d418e4..b858f2003523e7 100644
--- a/net/tipc/core.c
+++ b/net/tipc/core.c
@@ -48,15 +48,15 @@

/* global variables used by multiple sub-systems within TIPC */
-int tipc_random;
+int tipc_random __read_mostly;

/* configurable TIPC parameters */
-u32 tipc_own_addr;
-int tipc_max_ports;
+u32 tipc_own_addr __read_mostly;
+int tipc_max_ports __read_mostly;
int tipc_max_subscriptions;
int tipc_max_publications;
-int tipc_net_id;
-int tipc_remote_management;
+int tipc_net_id __read_mostly;
+int tipc_remote_management __read_mostly;

/**
diff --git a/net/tipc/core.h b/net/tipc/core.h
index e4e46cd2d0e671..4c5705ac8a5a3c 100644
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -74,17 +74,17 @@ int tipc_snprintf(char *buf, int len, const char *fmt, ...);
/*
* Global configuration variables
*/
-extern u32 tipc_own_addr;
-extern int tipc_max_ports;
+extern u32 tipc_own_addr __read_mostly;
+extern int tipc_max_ports __read_mostly;
extern int tipc_max_subscriptions;
extern int tipc_max_publications;
-extern int tipc_net_id;
-extern int tipc_remote_management;
+extern int tipc_net_id __read_mostly;
+extern int tipc_remote_management __read_mostly;

/*
* Other global variables
*/
-extern int tipc_random;
+extern int tipc_random __read_mostly;

/*
* Routines available to privileged subsystems
diff --git a/net/tipc/handler.c b/net/tipc/handler.c
index 7a52d3922f3c2b..111ff8300ae52e 100644
--- a/net/tipc/handler.c
+++ b/net/tipc/handler.c
@@ -45,7 +45,7 @@ struct queue_item {
static struct kmem_cache *tipc_queue_item_cache;
static struct list_head signal_queue_head;
static DEFINE_SPINLOCK(qitem_lock);
-static int handler_enabled;
+static int handler_enabled __read_mostly;

static void process_signal_queue(unsigned long dummy);
-rw-r--r-- net/tipc/core.c 10
-rw-r--r-- net/tipc/core.h 10
-rw-r--r-- net/tipc/handler.c 2
3 files changed, 11 insertions, 11 deletions
diff --git a/net/tipc/core.c b/net/tipc/core.c
index daae7f74d418e4..b858f2003523e7 100644
--- a/net/tipc/core.c
+++ b/net/tipc/core.c
@@ -48,15 +48,15 @@
 
 
 /* global variables used by multiple sub-systems within TIPC */
-int tipc_random;
+int tipc_random __read_mostly;
 
 /* configurable TIPC parameters */
-u32 tipc_own_addr;
-int tipc_max_ports;
+u32 tipc_own_addr __read_mostly;
+int tipc_max_ports __read_mostly;
 int tipc_max_subscriptions;
 int tipc_max_publications;
-int tipc_net_id;
-int tipc_remote_management;
+int tipc_net_id __read_mostly;
+int tipc_remote_management __read_mostly;
 
 
 /**
diff --git a/net/tipc/core.h b/net/tipc/core.h
index e4e46cd2d0e671..4c5705ac8a5a3c 100644
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -74,17 +74,17 @@ int tipc_snprintf(char *buf, int len, const char *fmt, ...);
 /*
  * Global configuration variables
  */
-extern u32 tipc_own_addr;
-extern int tipc_max_ports;
+extern u32 tipc_own_addr __read_mostly;
+extern int tipc_max_ports __read_mostly;
 extern int tipc_max_subscriptions;
 extern int tipc_max_publications;
-extern int tipc_net_id;
-extern int tipc_remote_management;
+extern int tipc_net_id __read_mostly;
+extern int tipc_remote_management __read_mostly;
 
 /*
  * Other global variables
  */
-extern int tipc_random;
+extern int tipc_random __read_mostly;
 
 /*
  * Routines available to privileged subsystems
diff --git a/net/tipc/handler.c b/net/tipc/handler.c
index 7a52d3922f3c2b..111ff8300ae52e 100644
--- a/net/tipc/handler.c
+++ b/net/tipc/handler.c
@@ -45,7 +45,7 @@ struct queue_item {
 static struct kmem_cache *tipc_queue_item_cache;
 static struct list_head signal_queue_head;
 static DEFINE_SPINLOCK(qitem_lock);
-static int handler_enabled;
+static int handler_enabled __read_mostly;
 
 static void process_signal_queue(unsigned long dummy);