Commit 9eb6206d authored by David S. Miller's avatar David S. Miller

Merge branch 'bridge-mrp-Add-support-for-getting-the-status'

Horatiu Vultur says:

====================
bridge: mrp: Add support for getting the status

This patch series extends the MRP netlink interface to allow the userspace
daemon to get the status of the MRP instances in the kernel.

v3:
  - remove misleading comment
  - fix to use correctly the RCU

v2:
  - fix sparse warnings
====================
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parents 23212a70 36a8e8e2
...@@ -166,6 +166,7 @@ enum { ...@@ -166,6 +166,7 @@ enum {
IFLA_BRIDGE_MRP_RING_STATE, IFLA_BRIDGE_MRP_RING_STATE,
IFLA_BRIDGE_MRP_RING_ROLE, IFLA_BRIDGE_MRP_RING_ROLE,
IFLA_BRIDGE_MRP_START_TEST, IFLA_BRIDGE_MRP_START_TEST,
IFLA_BRIDGE_MRP_INFO,
__IFLA_BRIDGE_MRP_MAX, __IFLA_BRIDGE_MRP_MAX,
}; };
...@@ -228,6 +229,22 @@ enum { ...@@ -228,6 +229,22 @@ enum {
#define IFLA_BRIDGE_MRP_START_TEST_MAX (__IFLA_BRIDGE_MRP_START_TEST_MAX - 1) #define IFLA_BRIDGE_MRP_START_TEST_MAX (__IFLA_BRIDGE_MRP_START_TEST_MAX - 1)
enum {
IFLA_BRIDGE_MRP_INFO_UNSPEC,
IFLA_BRIDGE_MRP_INFO_RING_ID,
IFLA_BRIDGE_MRP_INFO_P_IFINDEX,
IFLA_BRIDGE_MRP_INFO_S_IFINDEX,
IFLA_BRIDGE_MRP_INFO_PRIO,
IFLA_BRIDGE_MRP_INFO_RING_STATE,
IFLA_BRIDGE_MRP_INFO_RING_ROLE,
IFLA_BRIDGE_MRP_INFO_TEST_INTERVAL,
IFLA_BRIDGE_MRP_INFO_TEST_MAX_MISS,
IFLA_BRIDGE_MRP_INFO_TEST_MONITOR,
__IFLA_BRIDGE_MRP_INFO_MAX,
};
#define IFLA_BRIDGE_MRP_INFO_MAX (__IFLA_BRIDGE_MRP_INFO_MAX - 1)
struct br_mrp_instance { struct br_mrp_instance {
__u32 ring_id; __u32 ring_id;
__u32 p_ifindex; __u32 p_ifindex;
......
...@@ -778,6 +778,7 @@ enum { ...@@ -778,6 +778,7 @@ enum {
#define RTEXT_FILTER_BRVLAN (1 << 1) #define RTEXT_FILTER_BRVLAN (1 << 1)
#define RTEXT_FILTER_BRVLAN_COMPRESSED (1 << 2) #define RTEXT_FILTER_BRVLAN_COMPRESSED (1 << 2)
#define RTEXT_FILTER_SKIP_STATS (1 << 3) #define RTEXT_FILTER_SKIP_STATS (1 << 3)
#define RTEXT_FILTER_MRP (1 << 4)
/* End of information exported to user level */ /* End of information exported to user level */
......
...@@ -304,6 +304,70 @@ int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, ...@@ -304,6 +304,70 @@ int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
return 0; return 0;
} }
int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br)
{
struct nlattr *tb, *mrp_tb;
struct br_mrp *mrp;
mrp_tb = nla_nest_start_noflag(skb, IFLA_BRIDGE_MRP);
if (!mrp_tb)
return -EMSGSIZE;
list_for_each_entry_rcu(mrp, &br->mrp_list, list) {
struct net_bridge_port *p;
tb = nla_nest_start_noflag(skb, IFLA_BRIDGE_MRP_INFO);
if (!tb)
goto nla_info_failure;
if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_RING_ID,
mrp->ring_id))
goto nla_put_failure;
p = rcu_dereference(mrp->p_port);
if (p && nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_P_IFINDEX,
p->dev->ifindex))
goto nla_put_failure;
p = rcu_dereference(mrp->s_port);
if (p && nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_S_IFINDEX,
p->dev->ifindex))
goto nla_put_failure;
if (nla_put_u16(skb, IFLA_BRIDGE_MRP_INFO_PRIO,
mrp->prio))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_RING_STATE,
mrp->ring_state))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_RING_ROLE,
mrp->ring_role))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_TEST_INTERVAL,
mrp->test_interval))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_TEST_MAX_MISS,
mrp->test_max_miss))
goto nla_put_failure;
if (nla_put_u32(skb, IFLA_BRIDGE_MRP_INFO_TEST_MONITOR,
mrp->test_monitor))
goto nla_put_failure;
nla_nest_end(skb, tb);
}
nla_nest_end(skb, mrp_tb);
return 0;
nla_put_failure:
nla_nest_cancel(skb, tb);
nla_info_failure:
nla_nest_cancel(skb, mrp_tb);
return -EMSGSIZE;
}
int br_mrp_port_open(struct net_device *dev, u8 loc) int br_mrp_port_open(struct net_device *dev, u8 loc)
{ {
struct net_bridge_port *p; struct net_bridge_port *p;
......
...@@ -453,6 +453,28 @@ static int br_fill_ifinfo(struct sk_buff *skb, ...@@ -453,6 +453,28 @@ static int br_fill_ifinfo(struct sk_buff *skb,
rcu_read_unlock(); rcu_read_unlock();
if (err) if (err)
goto nla_put_failure; goto nla_put_failure;
nla_nest_end(skb, af);
}
if (filter_mask & RTEXT_FILTER_MRP) {
struct nlattr *af;
int err;
if (!br_mrp_enabled(br) || port)
goto done;
af = nla_nest_start_noflag(skb, IFLA_AF_SPEC);
if (!af)
goto nla_put_failure;
rcu_read_lock();
err = br_mrp_fill_info(skb, br);
rcu_read_unlock();
if (err)
goto nla_put_failure;
nla_nest_end(skb, af); nla_nest_end(skb, af);
} }
...@@ -516,7 +538,8 @@ int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, ...@@ -516,7 +538,8 @@ int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
struct net_bridge_port *port = br_port_get_rtnl(dev); struct net_bridge_port *port = br_port_get_rtnl(dev);
if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) && if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED)) !(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) &&
!(filter_mask & RTEXT_FILTER_MRP))
return 0; return 0;
return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags, return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
......
...@@ -1317,6 +1317,7 @@ int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, ...@@ -1317,6 +1317,7 @@ int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
int br_mrp_process(struct net_bridge_port *p, struct sk_buff *skb); int br_mrp_process(struct net_bridge_port *p, struct sk_buff *skb);
bool br_mrp_enabled(struct net_bridge *br); bool br_mrp_enabled(struct net_bridge *br);
void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p); void br_mrp_port_del(struct net_bridge *br, struct net_bridge_port *p);
int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br);
#else #else
static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p, static inline int br_mrp_parse(struct net_bridge *br, struct net_bridge_port *p,
struct nlattr *attr, int cmd, struct nlattr *attr, int cmd,
...@@ -1339,6 +1340,12 @@ static inline void br_mrp_port_del(struct net_bridge *br, ...@@ -1339,6 +1340,12 @@ static inline void br_mrp_port_del(struct net_bridge *br,
struct net_bridge_port *p) struct net_bridge_port *p)
{ {
} }
static inline int br_mrp_fill_info(struct sk_buff *skb, struct net_bridge *br)
{
return 0;
}
#endif #endif
/* br_netlink.c */ /* br_netlink.c */
......
Markdown is supported
0%
or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment