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Diffstat (limited to 'net/bridge/br_netlink.c')
-rw-r--r--net/bridge/br_netlink.c115
1 files changed, 104 insertions, 11 deletions
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 92d64abffa87..6952d4852942 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -16,6 +16,7 @@
#include "br_private.h"
#include "br_private_stp.h"
+#include "br_private_cfm.h"
#include "br_private_tunnel.h"
static int __get_num_vlan_infos(struct net_bridge_vlan_group *vg,
@@ -93,9 +94,11 @@ static size_t br_get_link_af_size_filtered(const struct net_device *dev,
{
struct net_bridge_vlan_group *vg = NULL;
struct net_bridge_port *p = NULL;
- struct net_bridge *br;
- int num_vlan_infos;
+ struct net_bridge *br = NULL;
+ u32 num_cfm_peer_mep_infos;
+ u32 num_cfm_mep_infos;
size_t vinfo_sz = 0;
+ int num_vlan_infos;
rcu_read_lock();
if (netif_is_bridge_port(dev)) {
@@ -114,6 +117,49 @@ static size_t br_get_link_af_size_filtered(const struct net_device *dev,
/* Each VLAN is returned in bridge_vlan_info along with flags */
vinfo_sz += num_vlan_infos * nla_total_size(sizeof(struct bridge_vlan_info));
+ if (!(filter_mask & RTEXT_FILTER_CFM_STATUS))
+ return vinfo_sz;
+
+ if (!br)
+ return vinfo_sz;
+
+ /* CFM status info must be added */
+ br_cfm_mep_count(br, &num_cfm_mep_infos);
+ br_cfm_peer_mep_count(br, &num_cfm_peer_mep_infos);
+
+ vinfo_sz += nla_total_size(0); /* IFLA_BRIDGE_CFM */
+ /* For each status struct the MEP instance (u32) is added */
+ /* MEP instance (u32) + br_cfm_mep_status */
+ vinfo_sz += num_cfm_mep_infos *
+ /*IFLA_BRIDGE_CFM_MEP_STATUS_INSTANCE */
+ (nla_total_size(sizeof(u32))
+ /* IFLA_BRIDGE_CFM_MEP_STATUS_OPCODE_UNEXP_SEEN */
+ + nla_total_size(sizeof(u32))
+ /* IFLA_BRIDGE_CFM_MEP_STATUS_VERSION_UNEXP_SEEN */
+ + nla_total_size(sizeof(u32))
+ /* IFLA_BRIDGE_CFM_MEP_STATUS_RX_LEVEL_LOW_SEEN */
+ + nla_total_size(sizeof(u32)));
+ /* MEP instance (u32) + br_cfm_cc_peer_status */
+ vinfo_sz += num_cfm_peer_mep_infos *
+ /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_INSTANCE */
+ (nla_total_size(sizeof(u32))
+ /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_PEER_MEPID */
+ + nla_total_size(sizeof(u32))
+ /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_CCM_DEFECT */
+ + nla_total_size(sizeof(u32))
+ /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_RDI */
+ + nla_total_size(sizeof(u32))
+ /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_PORT_TLV_VALUE */
+ + nla_total_size(sizeof(u8))
+ /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_IF_TLV_VALUE */
+ + nla_total_size(sizeof(u8))
+ /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEEN */
+ + nla_total_size(sizeof(u32))
+ /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_TLV_SEEN */
+ + nla_total_size(sizeof(u32))
+ /* IFLA_BRIDGE_CFM_CC_PEER_STATUS_SEQ_UNEXP_SEEN */
+ + nla_total_size(sizeof(u32)));
+
return vinfo_sz;
}
@@ -377,7 +423,8 @@ nla_put_failure:
static int br_fill_ifinfo(struct sk_buff *skb,
const struct net_bridge_port *port,
u32 pid, u32 seq, int event, unsigned int flags,
- u32 filter_mask, const struct net_device *dev)
+ u32 filter_mask, const struct net_device *dev,
+ bool getlink)
{
u8 operstate = netif_running(dev) ? dev->operstate : IF_OPER_DOWN;
struct nlattr *af = NULL;
@@ -426,7 +473,9 @@ static int br_fill_ifinfo(struct sk_buff *skb,
if (filter_mask & (RTEXT_FILTER_BRVLAN |
RTEXT_FILTER_BRVLAN_COMPRESSED |
- RTEXT_FILTER_MRP)) {
+ RTEXT_FILTER_MRP |
+ RTEXT_FILTER_CFM_CONFIG |
+ RTEXT_FILTER_CFM_STATUS)) {
af = nla_nest_start_noflag(skb, IFLA_AF_SPEC);
if (!af)
goto nla_put_failure;
@@ -475,6 +524,36 @@ static int br_fill_ifinfo(struct sk_buff *skb,
goto nla_put_failure;
}
+ if (filter_mask & (RTEXT_FILTER_CFM_CONFIG | RTEXT_FILTER_CFM_STATUS)) {
+ struct nlattr *cfm_nest = NULL;
+ int err;
+
+ if (!br_cfm_created(br) || port)
+ goto done;
+
+ cfm_nest = nla_nest_start(skb, IFLA_BRIDGE_CFM);
+ if (!cfm_nest)
+ goto nla_put_failure;
+
+ if (filter_mask & RTEXT_FILTER_CFM_CONFIG) {
+ rcu_read_lock();
+ err = br_cfm_config_fill_info(skb, br);
+ rcu_read_unlock();
+ if (err)
+ goto nla_put_failure;
+ }
+
+ if (filter_mask & RTEXT_FILTER_CFM_STATUS) {
+ rcu_read_lock();
+ err = br_cfm_status_fill_info(skb, br, getlink);
+ rcu_read_unlock();
+ if (err)
+ goto nla_put_failure;
+ }
+
+ nla_nest_end(skb, cfm_nest);
+ }
+
done:
if (af)
nla_nest_end(skb, af);
@@ -486,11 +565,9 @@ nla_put_failure:
return -EMSGSIZE;
}
-/* Notify listeners of a change in bridge or port information */
-void br_ifinfo_notify(int event, const struct net_bridge *br,
- const struct net_bridge_port *port)
+void br_info_notify(int event, const struct net_bridge *br,
+ const struct net_bridge_port *port, u32 filter)
{
- u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
struct net_device *dev;
struct sk_buff *skb;
int err = -ENOBUFS;
@@ -515,7 +592,7 @@ void br_ifinfo_notify(int event, const struct net_bridge *br,
if (skb == NULL)
goto errout;
- err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev);
+ err = br_fill_ifinfo(skb, port, 0, 0, event, 0, filter, dev, false);
if (err < 0) {
/* -EMSGSIZE implies BUG in br_nlmsg_size() */
WARN_ON(err == -EMSGSIZE);
@@ -528,6 +605,15 @@ errout:
rtnl_set_sk_err(net, RTNLGRP_LINK, err);
}
+/* Notify listeners of a change in bridge or port information */
+void br_ifinfo_notify(int event, const struct net_bridge *br,
+ const struct net_bridge_port *port)
+{
+ u32 filter = RTEXT_FILTER_BRVLAN_COMPRESSED;
+
+ return br_info_notify(event, br, port, filter);
+}
+
/*
* Dump information about all ports, in response to GETLINK
*/
@@ -538,11 +624,13 @@ int br_getlink(struct sk_buff *skb, u32 pid, u32 seq,
if (!port && !(filter_mask & RTEXT_FILTER_BRVLAN) &&
!(filter_mask & RTEXT_FILTER_BRVLAN_COMPRESSED) &&
- !(filter_mask & RTEXT_FILTER_MRP))
+ !(filter_mask & RTEXT_FILTER_MRP) &&
+ !(filter_mask & RTEXT_FILTER_CFM_CONFIG) &&
+ !(filter_mask & RTEXT_FILTER_CFM_STATUS))
return 0;
return br_fill_ifinfo(skb, port, pid, seq, RTM_NEWLINK, nlflags,
- filter_mask, dev);
+ filter_mask, dev, true);
}
static int br_vlan_info(struct net_bridge *br, struct net_bridge_port *p,
@@ -700,6 +788,11 @@ static int br_afspec(struct net_bridge *br,
if (err)
return err;
break;
+ case IFLA_BRIDGE_CFM:
+ err = br_cfm_parse(br, p, attr, cmd, extack);
+ if (err)
+ return err;
+ break;
}
}
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.