提交 3cc77ec7 编写于 作者: E Eric Dumazet 提交者: David S. Miller

net/802: add __rcu annotations

(struct net_device)->garp_port is rcu protected :
(struct garp_port)->applicants is rcu protected :

add __rcu annotation and proper rcu primitives.
Signed-off-by: NEric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 198caeca
......@@ -1072,7 +1072,7 @@ struct net_device {
struct pcpu_dstats __percpu *dstats; /* dummy stats */
};
/* GARP */
struct garp_port *garp_port;
struct garp_port __rcu *garp_port;
/* class/net/name entry */
struct device dev;
......
......@@ -107,7 +107,7 @@ struct garp_applicant {
};
struct garp_port {
struct garp_applicant *applicants[GARP_APPLICATION_MAX + 1];
struct garp_applicant __rcu *applicants[GARP_APPLICATION_MAX + 1];
};
extern int garp_register_application(struct garp_application *app);
......
......@@ -346,8 +346,8 @@ int garp_request_join(const struct net_device *dev,
const struct garp_application *appl,
const void *data, u8 len, u8 type)
{
struct garp_port *port = dev->garp_port;
struct garp_applicant *app = port->applicants[appl->type];
struct garp_port *port = rtnl_dereference(dev->garp_port);
struct garp_applicant *app = rtnl_dereference(port->applicants[appl->type]);
struct garp_attr *attr;
spin_lock_bh(&app->lock);
......@@ -366,8 +366,8 @@ void garp_request_leave(const struct net_device *dev,
const struct garp_application *appl,
const void *data, u8 len, u8 type)
{
struct garp_port *port = dev->garp_port;
struct garp_applicant *app = port->applicants[appl->type];
struct garp_port *port = rtnl_dereference(dev->garp_port);
struct garp_applicant *app = rtnl_dereference(port->applicants[appl->type]);
struct garp_attr *attr;
spin_lock_bh(&app->lock);
......@@ -546,11 +546,11 @@ static int garp_init_port(struct net_device *dev)
static void garp_release_port(struct net_device *dev)
{
struct garp_port *port = dev->garp_port;
struct garp_port *port = rtnl_dereference(dev->garp_port);
unsigned int i;
for (i = 0; i <= GARP_APPLICATION_MAX; i++) {
if (port->applicants[i])
if (rtnl_dereference(port->applicants[i]))
return;
}
rcu_assign_pointer(dev->garp_port, NULL);
......@@ -565,7 +565,7 @@ int garp_init_applicant(struct net_device *dev, struct garp_application *appl)
ASSERT_RTNL();
if (!dev->garp_port) {
if (!rtnl_dereference(dev->garp_port)) {
err = garp_init_port(dev);
if (err < 0)
goto err1;
......@@ -601,8 +601,8 @@ EXPORT_SYMBOL_GPL(garp_init_applicant);
void garp_uninit_applicant(struct net_device *dev, struct garp_application *appl)
{
struct garp_port *port = dev->garp_port;
struct garp_applicant *app = port->applicants[appl->type];
struct garp_port *port = rtnl_dereference(dev->garp_port);
struct garp_applicant *app = rtnl_dereference(port->applicants[appl->type]);
ASSERT_RTNL();
......
......@@ -21,8 +21,8 @@
#define GARP_ADDR_MAX 0x2F
#define GARP_ADDR_RANGE (GARP_ADDR_MAX - GARP_ADDR_MIN)
static const struct stp_proto *garp_protos[GARP_ADDR_RANGE + 1] __read_mostly;
static const struct stp_proto *stp_proto __read_mostly;
static const struct stp_proto __rcu *garp_protos[GARP_ADDR_RANGE + 1] __read_mostly;
static const struct stp_proto __rcu *stp_proto __read_mostly;
static struct llc_sap *sap __read_mostly;
static unsigned int sap_registered;
......
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