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Merge branch 'tipc-netlink-monitor-updates' 

Parthasarathy Bhuvaragan says:

====================
tipc: netlink updates for neighbour monitor

This series contains the updates to configure and read the attributes for
neighbour monitor.

v2: rebase on top of net-next
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2016-07-26 14:26:43 -07:00
parent d1c2b5010d cf6f7e1d51
commit 2a0b9d8a14
11 changed files with 445 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
include/uapi/linux/tipc.h
View File

@ -60,26 +60,48 @@ struct tipc_name_seq {
__u32 upper;
};
/* TIPC Address Size, Offset, Mask specification for Z.C.N
*/
#define TIPC_NODE_BITS 12
#define TIPC_CLUSTER_BITS 12
#define TIPC_ZONE_BITS 8
#define TIPC_NODE_OFFSET 0
#define TIPC_CLUSTER_OFFSET TIPC_NODE_BITS
#define TIPC_ZONE_OFFSET (TIPC_CLUSTER_OFFSET + TIPC_CLUSTER_BITS)
#define TIPC_NODE_SIZE ((1UL << TIPC_NODE_BITS) - 1)
#define TIPC_CLUSTER_SIZE ((1UL << TIPC_CLUSTER_BITS) - 1)
#define TIPC_ZONE_SIZE ((1UL << TIPC_ZONE_BITS) - 1)
#define TIPC_NODE_MASK (TIPC_NODE_SIZE << TIPC_NODE_OFFSET)
#define TIPC_CLUSTER_MASK (TIPC_CLUSTER_SIZE << TIPC_CLUSTER_OFFSET)
#define TIPC_ZONE_MASK (TIPC_ZONE_SIZE << TIPC_ZONE_OFFSET)
#define TIPC_ZONE_CLUSTER_MASK (TIPC_ZONE_MASK | TIPC_CLUSTER_MASK)
static inline __u32 tipc_addr(unsigned int zone,
unsigned int cluster,
unsigned int node)
{
return (zone << 24) | (cluster << 12) | node;
return (zone << TIPC_ZONE_OFFSET) |
(cluster << TIPC_CLUSTER_OFFSET) |
node;
}
static inline unsigned int tipc_zone(__u32 addr)
{
return addr >> 24;
return addr >> TIPC_ZONE_OFFSET;
}
static inline unsigned int tipc_cluster(__u32 addr)
{
return (addr >> 12) & 0xfff;
return (addr & TIPC_CLUSTER_MASK) >> TIPC_CLUSTER_OFFSET;
}
static inline unsigned int tipc_node(__u32 addr)
{
return addr & 0xfff;
return addr & TIPC_NODE_MASK;
}
/*

37
include/uapi/linux/tipc_netlink.h
View File

@ -56,6 +56,9 @@ enum {
TIPC_NL_NET_GET,
TIPC_NL_NET_SET,
TIPC_NL_NAME_TABLE_GET,
TIPC_NL_MON_SET,
TIPC_NL_MON_GET,
TIPC_NL_MON_PEER_GET,
__TIPC_NL_CMD_MAX,
TIPC_NL_CMD_MAX = __TIPC_NL_CMD_MAX - 1
@ -72,6 +75,8 @@ enum {
TIPC_NLA_NODE, /* nest */
TIPC_NLA_NET, /* nest */
TIPC_NLA_NAME_TABLE, /* nest */
TIPC_NLA_MON, /* nest */
TIPC_NLA_MON_PEER, /* nest */
__TIPC_NLA_MAX,
TIPC_NLA_MAX = __TIPC_NLA_MAX - 1
@ -166,6 +171,20 @@ enum {
TIPC_NLA_NAME_TABLE_MAX = __TIPC_NLA_NAME_TABLE_MAX - 1
};
/* Monitor info */
enum {
TIPC_NLA_MON_UNSPEC,
TIPC_NLA_MON_ACTIVATION_THRESHOLD, /* u32 */
TIPC_NLA_MON_REF, /* u32 */
TIPC_NLA_MON_ACTIVE, /* flag */
TIPC_NLA_MON_BEARER_NAME, /* string */
TIPC_NLA_MON_PEERCNT, /* u32 */
TIPC_NLA_MON_LISTGEN, /* u32 */
__TIPC_NLA_MON_MAX,
TIPC_NLA_MON_MAX = __TIPC_NLA_MON_MAX - 1
};
/* Publication info */
enum {
TIPC_NLA_PUBL_UNSPEC,
@ -182,6 +201,24 @@ enum {
TIPC_NLA_PUBL_MAX = __TIPC_NLA_PUBL_MAX - 1
};
/* Monitor peer info */
enum {
TIPC_NLA_MON_PEER_UNSPEC,
TIPC_NLA_MON_PEER_ADDR, /* u32 */
TIPC_NLA_MON_PEER_DOMGEN, /* u32 */
TIPC_NLA_MON_PEER_APPLIED, /* u32 */
TIPC_NLA_MON_PEER_UPMAP, /* u64 */
TIPC_NLA_MON_PEER_MEMBERS, /* tlv */
TIPC_NLA_MON_PEER_UP, /* flag */
TIPC_NLA_MON_PEER_HEAD, /* flag */
TIPC_NLA_MON_PEER_LOCAL, /* flag */
TIPC_NLA_MON_PEER_PAD, /* flag */
__TIPC_NLA_MON_PEER_MAX,
TIPC_NLA_MON_PEER_MAX = __TIPC_NLA_MON_PEER_MAX - 1
};
/* Nest, connection info */
enum {
TIPC_NLA_CON_UNSPEC,

5
net/tipc/addr.h
View File

@ -43,9 +43,6 @@
#include <net/netns/generic.h>
#include "core.h"
#define TIPC_ZONE_MASK 0xff000000u
#define TIPC_CLUSTER_MASK 0xfffff000u
static inline u32 tipc_own_addr(struct net *net)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
@ -60,7 +57,7 @@ static inline u32 tipc_zone_mask(u32 addr)
static inline u32 tipc_cluster_mask(u32 addr)
{
return addr & TIPC_CLUSTER_MASK;
return addr & TIPC_ZONE_CLUSTER_MASK;
}
u32 tipc_own_addr(struct net *net);

25
net/tipc/bearer.c
View File

@ -171,6 +171,27 @@ struct tipc_bearer *tipc_bearer_find(struct net *net, const char *name)
return NULL;
}
/* tipc_bearer_get_name - get the bearer name from its id.
* @net: network namespace
* @name: a pointer to the buffer where the name will be stored.
* @bearer_id: the id to get the name from.
*/
int tipc_bearer_get_name(struct net *net, char *name, u32 bearer_id)
{
struct tipc_net *tn = tipc_net(net);
struct tipc_bearer *b;
if (bearer_id >= MAX_BEARERS)
return -EINVAL;
b = rtnl_dereference(tn->bearer_list[bearer_id]);
if (!b)
return -EINVAL;
strcpy(name, b->name);
return 0;
}
void tipc_bearer_add_dest(struct net *net, u32 bearer_id, u32 dest)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
@ -225,7 +246,7 @@ static int tipc_enable_bearer(struct net *net, const char *name,
if (tipc_addr_domain_valid(disc_domain) &&
(disc_domain != tn->own_addr)) {
if (tipc_in_scope(disc_domain, tn->own_addr)) {
disc_domain = tn->own_addr & TIPC_CLUSTER_MASK;
disc_domain = tn->own_addr & TIPC_ZONE_CLUSTER_MASK;
res = 0; /* accept any node in own cluster */
} else if (in_own_cluster_exact(net, disc_domain))
res = 0; /* accept specified node in own cluster */
@ -832,7 +853,7 @@ int tipc_nl_bearer_enable(struct sk_buff *skb, struct genl_info *info)
u32 prio;
prio = TIPC_MEDIA_LINK_PRI;
domain = tn->own_addr & TIPC_CLUSTER_MASK;
domain = tn->own_addr & TIPC_ZONE_CLUSTER_MASK;
if (!info->attrs[TIPC_NLA_BEARER])
return -EINVAL;

1
net/tipc/bearer.h
View File

@ -197,6 +197,7 @@ int tipc_l2_send_msg(struct net *net, struct sk_buff *buf,
void tipc_bearer_add_dest(struct net *net, u32 bearer_id, u32 dest);
void tipc_bearer_remove_dest(struct net *net, u32 bearer_id, u32 dest);
struct tipc_bearer *tipc_bearer_find(struct net *net, const char *name);
int tipc_bearer_get_name(struct net *net, char *name, u32 bearer_id);
struct tipc_media *tipc_media_find(const char *name);
void tipc_bearer_reset_all(struct net *net);
int tipc_bearer_setup(void);

152
net/tipc/monitor.c
View File

@ -33,9 +33,11 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <net/genetlink.h>
#include "core.h"
#include "addr.h"
#include "monitor.h"
#include "bearer.h"
#define MAX_MON_DOMAIN 64
#define MON_TIMEOUT 120000
@ -649,3 +651,153 @@ void tipc_mon_delete(struct net *net, int bearer_id)
kfree(self);
kfree(mon);
}
int tipc_nl_monitor_set_threshold(struct net *net, u32 cluster_size)
{
struct tipc_net *tn = tipc_net(net);
if (cluster_size > TIPC_CLUSTER_SIZE)
return -EINVAL;
tn->mon_threshold = cluster_size;
return 0;
}
int tipc_nl_monitor_get_threshold(struct net *net)
{
struct tipc_net *tn = tipc_net(net);
return tn->mon_threshold;
}
int __tipc_nl_add_monitor_peer(struct tipc_peer *peer, struct tipc_nl_msg *msg)
{
struct tipc_mon_domain *dom = peer->domain;
struct nlattr *attrs;
void *hdr;
hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family,
NLM_F_MULTI, TIPC_NL_MON_PEER_GET);
if (!hdr)
return -EMSGSIZE;
attrs = nla_nest_start(msg->skb, TIPC_NLA_MON_PEER);
if (!attrs)
goto msg_full;
if (nla_put_u32(msg->skb, TIPC_NLA_MON_PEER_ADDR, peer->addr))
goto attr_msg_full;
if (nla_put_u32(msg->skb, TIPC_NLA_MON_PEER_APPLIED, peer->applied))
goto attr_msg_full;
if (peer->is_up)
if (nla_put_flag(msg->skb, TIPC_NLA_MON_PEER_UP))
goto attr_msg_full;
if (peer->is_local)
if (nla_put_flag(msg->skb, TIPC_NLA_MON_PEER_LOCAL))
goto attr_msg_full;
if (peer->is_head)
if (nla_put_flag(msg->skb, TIPC_NLA_MON_PEER_HEAD))
goto attr_msg_full;
if (dom) {
if (nla_put_u32(msg->skb, TIPC_NLA_MON_PEER_DOMGEN, dom->gen))
goto attr_msg_full;
if (nla_put_u64_64bit(msg->skb, TIPC_NLA_MON_PEER_UPMAP,
dom->up_map, TIPC_NLA_MON_PEER_PAD))
goto attr_msg_full;
if (nla_put(msg->skb, TIPC_NLA_MON_PEER_MEMBERS,
dom->member_cnt * sizeof(u32), &dom->members))
goto attr_msg_full;
}
nla_nest_end(msg->skb, attrs);
genlmsg_end(msg->skb, hdr);
return 0;
attr_msg_full:
nla_nest_cancel(msg->skb, attrs);
msg_full:
genlmsg_cancel(msg->skb, hdr);
return -EMSGSIZE;
}
int tipc_nl_add_monitor_peer(struct net *net, struct tipc_nl_msg *msg,
u32 bearer_id, u32 *prev_node)
{
struct tipc_monitor *mon = tipc_monitor(net, bearer_id);
struct tipc_peer *peer = mon->self;
if (!mon)
return -EINVAL;
read_lock_bh(&mon->lock);
do {
if (*prev_node) {
if (peer->addr == *prev_node)
*prev_node = 0;
else
continue;
}
if (__tipc_nl_add_monitor_peer(peer, msg)) {
*prev_node = peer->addr;
read_unlock_bh(&mon->lock);
return -EMSGSIZE;
}
} while ((peer = peer_nxt(peer)) != mon->self);
read_unlock_bh(&mon->lock);
return 0;
}
int __tipc_nl_add_monitor(struct net *net, struct tipc_nl_msg *msg,
u32 bearer_id)
{
struct tipc_monitor *mon = tipc_monitor(net, bearer_id);
char bearer_name[TIPC_MAX_BEARER_NAME];
struct nlattr *attrs;
void *hdr;
int ret;
ret = tipc_bearer_get_name(net, bearer_name, bearer_id);
if (ret || !mon)
return -EINVAL;
hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family,
NLM_F_MULTI, TIPC_NL_MON_GET);
if (!hdr)
return -EMSGSIZE;
attrs = nla_nest_start(msg->skb, TIPC_NLA_MON);
if (!attrs)
goto msg_full;
read_lock_bh(&mon->lock);
if (nla_put_u32(msg->skb, TIPC_NLA_MON_REF, bearer_id))
goto attr_msg_full;
if (tipc_mon_is_active(net, mon))
if (nla_put_flag(msg->skb, TIPC_NLA_MON_ACTIVE))
goto attr_msg_full;
if (nla_put_string(msg->skb, TIPC_NLA_MON_BEARER_NAME, bearer_name))
goto attr_msg_full;
if (nla_put_u32(msg->skb, TIPC_NLA_MON_PEERCNT, mon->peer_cnt))
goto attr_msg_full;
if (nla_put_u32(msg->skb, TIPC_NLA_MON_LISTGEN, mon->list_gen))
goto attr_msg_full;
read_unlock_bh(&mon->lock);
nla_nest_end(msg->skb, attrs);
genlmsg_end(msg->skb, hdr);
return 0;
attr_msg_full:
nla_nest_cancel(msg->skb, attrs);
msg_full:
genlmsg_cancel(msg->skb, hdr);
read_unlock_bh(&mon->lock);
return -EMSGSIZE;
}

9
net/tipc/monitor.h
View File

@ -36,6 +36,8 @@
#ifndef _TIPC_MONITOR_H
#define _TIPC_MONITOR_H
#include "netlink.h"
/* struct tipc_mon_state: link instance's cache of monitor list and domain state
* @list_gen: current generation of this node's monitor list
* @gen: current generation of this node's local domain
@ -69,5 +71,12 @@ void tipc_mon_get_state(struct net *net, u32 addr,
int bearer_id);
void tipc_mon_remove_peer(struct net *net, u32 addr, int bearer_id);
int tipc_nl_monitor_set_threshold(struct net *net, u32 cluster_size);
int tipc_nl_monitor_get_threshold(struct net *net);
int __tipc_nl_add_monitor(struct net *net, struct tipc_nl_msg *msg,
u32 bearer_id);
int tipc_nl_add_monitor_peer(struct net *net, struct tipc_nl_msg *msg,
u32 bearer_id, u32 *prev_node);
extern const int tipc_max_domain_size;
#endif

27
net/tipc/netlink.c
View File

@ -52,7 +52,8 @@ static const struct nla_policy tipc_nl_policy[TIPC_NLA_MAX + 1] = {
[TIPC_NLA_MEDIA] = { .type = NLA_NESTED, },
[TIPC_NLA_NODE] = { .type = NLA_NESTED, },
[TIPC_NLA_NET] = { .type = NLA_NESTED, },
[TIPC_NLA_NAME_TABLE] = { .type = NLA_NESTED, }
[TIPC_NLA_NAME_TABLE] = { .type = NLA_NESTED, },
[TIPC_NLA_MON] = { .type = NLA_NESTED, },
};
const struct nla_policy
@ -61,6 +62,12 @@ tipc_nl_name_table_policy[TIPC_NLA_NAME_TABLE_MAX + 1] = {
[TIPC_NLA_NAME_TABLE_PUBL] = { .type = NLA_NESTED }
};
const struct nla_policy tipc_nl_monitor_policy[TIPC_NLA_MON_MAX + 1] = {
[TIPC_NLA_MON_UNSPEC] = { .type = NLA_UNSPEC },
[TIPC_NLA_MON_REF] = { .type = NLA_U32 },
[TIPC_NLA_MON_ACTIVATION_THRESHOLD] = { .type = NLA_U32 },
};
const struct nla_policy tipc_nl_sock_policy[TIPC_NLA_SOCK_MAX + 1] = {
[TIPC_NLA_SOCK_UNSPEC] = { .type = NLA_UNSPEC },
[TIPC_NLA_SOCK_ADDR] = { .type = NLA_U32 },
@ -214,7 +221,23 @@ static const struct genl_ops tipc_genl_v2_ops[] = {
.cmd = TIPC_NL_NAME_TABLE_GET,
.dumpit = tipc_nl_name_table_dump,
.policy = tipc_nl_policy,
}
},
{
.cmd = TIPC_NL_MON_SET,
.doit = tipc_nl_node_set_monitor,
.policy = tipc_nl_policy,
},
{
.cmd = TIPC_NL_MON_GET,
.doit = tipc_nl_node_get_monitor,
.dumpit = tipc_nl_node_dump_monitor,
.policy = tipc_nl_policy,
},
{
.cmd = TIPC_NL_MON_PEER_GET,
.dumpit = tipc_nl_node_dump_monitor_peer,
.policy = tipc_nl_policy,
},
};
int tipc_nlmsg_parse(const struct nlmsghdr *nlh, struct nlattr ***attr)

1
net/tipc/netlink.h
View File

@ -55,6 +55,7 @@ extern const struct nla_policy tipc_nl_prop_policy[];
extern const struct nla_policy tipc_nl_bearer_policy[];
extern const struct nla_policy tipc_nl_media_policy[];
extern const struct nla_policy tipc_nl_udp_policy[];
extern const struct nla_policy tipc_nl_monitor_policy[];
int tipc_netlink_start(void);
int tipc_netlink_compat_start(void);

165
net/tipc/node.c
View File

@ -1928,3 +1928,168 @@ out:
return skb->len;
}
int tipc_nl_node_set_monitor(struct sk_buff *skb, struct genl_info *info)
{
struct nlattr *attrs[TIPC_NLA_MON_MAX + 1];
struct net *net = sock_net(skb->sk);
int err;
if (!info->attrs[TIPC_NLA_MON])
return -EINVAL;
err = nla_parse_nested(attrs, TIPC_NLA_MON_MAX,
info->attrs[TIPC_NLA_MON],
tipc_nl_monitor_policy);
if (err)
return err;
if (attrs[TIPC_NLA_MON_ACTIVATION_THRESHOLD]) {
u32 val;
val = nla_get_u32(attrs[TIPC_NLA_MON_ACTIVATION_THRESHOLD]);
err = tipc_nl_monitor_set_threshold(net, val);
if (err)
return err;
}
return 0;
}
static int __tipc_nl_add_monitor_prop(struct net *net, struct tipc_nl_msg *msg)
{
struct nlattr *attrs;
void *hdr;
u32 val;
hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family,
0, TIPC_NL_MON_GET);
if (!hdr)
return -EMSGSIZE;
attrs = nla_nest_start(msg->skb, TIPC_NLA_MON);
if (!attrs)
goto msg_full;
val = tipc_nl_monitor_get_threshold(net);
if (nla_put_u32(msg->skb, TIPC_NLA_MON_ACTIVATION_THRESHOLD, val))
goto attr_msg_full;
nla_nest_end(msg->skb, attrs);
genlmsg_end(msg->skb, hdr);
return 0;
attr_msg_full:
nla_nest_cancel(msg->skb, attrs);
msg_full:
genlmsg_cancel(msg->skb, hdr);
return -EMSGSIZE;
}
int tipc_nl_node_get_monitor(struct sk_buff *skb, struct genl_info *info)
{
struct net *net = sock_net(skb->sk);
struct tipc_nl_msg msg;
int err;
msg.skb = nlmsg_new(NLMSG_GOODSIZE, GFP_KERNEL);
msg.portid = info->snd_portid;
msg.seq = info->snd_seq;
err = __tipc_nl_add_monitor_prop(net, &msg);
if (err) {
nlmsg_free(msg.skb);
return err;
}
return genlmsg_reply(msg.skb, info);
}
int tipc_nl_node_dump_monitor(struct sk_buff *skb, struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
u32 prev_bearer = cb->args[0];
struct tipc_nl_msg msg;
int err;
int i;
if (prev_bearer == MAX_BEARERS)
return 0;
msg.skb = skb;
msg.portid = NETLINK_CB(cb->skb).portid;
msg.seq = cb->nlh->nlmsg_seq;
rtnl_lock();
for (i = prev_bearer; i < MAX_BEARERS; i++) {
prev_bearer = i;
err = __tipc_nl_add_monitor(net, &msg, prev_bearer);
if (err)
goto out;
}
out:
rtnl_unlock();
cb->args[0] = prev_bearer;
return skb->len;
}
int tipc_nl_node_dump_monitor_peer(struct sk_buff *skb,
struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
u32 prev_node = cb->args[1];
u32 bearer_id = cb->args[2];
int done = cb->args[0];
struct tipc_nl_msg msg;
int err;
if (!prev_node) {
struct nlattr **attrs;
struct nlattr *mon[TIPC_NLA_MON_MAX + 1];
err = tipc_nlmsg_parse(cb->nlh, &attrs);
if (err)
return err;
if (!attrs[TIPC_NLA_MON])
return -EINVAL;
err = nla_parse_nested(mon, TIPC_NLA_MON_MAX,
attrs[TIPC_NLA_MON],
tipc_nl_monitor_policy);
if (err)
return err;
if (!mon[TIPC_NLA_MON_REF])
return -EINVAL;
bearer_id = nla_get_u32(mon[TIPC_NLA_MON_REF]);
if (bearer_id >= MAX_BEARERS)
return -EINVAL;
}
if (done)
return 0;
msg.skb = skb;
msg.portid = NETLINK_CB(cb->skb).portid;
msg.seq = cb->nlh->nlmsg_seq;
rtnl_lock();
err = tipc_nl_add_monitor_peer(net, &msg, bearer_id, &prev_node);
if (!err)
done = 1;
rtnl_unlock();
cb->args[0] = done;
cb->args[1] = prev_node;
cb->args[2] = bearer_id;
return skb->len;
}

5
net/tipc/node.h
View File

@ -78,4 +78,9 @@ int tipc_nl_node_reset_link_stats(struct sk_buff *skb, struct genl_info *info);
int tipc_nl_node_get_link(struct sk_buff *skb, struct genl_info *info);
int tipc_nl_node_set_link(struct sk_buff *skb, struct genl_info *info);
int tipc_nl_node_set_monitor(struct sk_buff *skb, struct genl_info *info);
int tipc_nl_node_get_monitor(struct sk_buff *skb, struct genl_info *info);
int tipc_nl_node_dump_monitor(struct sk_buff *skb, struct netlink_callback *cb);
int tipc_nl_node_dump_monitor_peer(struct sk_buff *skb,
struct netlink_callback *cb);
#endif