From 01573e231f18eb2d99162747186f59511f56b64d Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Fri, 08 Dec 2023 10:40:48 +0000
Subject: [PATCH] 移去rt
---
kernel/net/tipc/node.c | 891 ++++++++++++++++++++++++++++++++++++++++++++++++++++-------
1 files changed, 786 insertions(+), 105 deletions(-)
diff --git a/kernel/net/tipc/node.c b/kernel/net/tipc/node.c
index a188c25..7589f2a 100644
--- a/kernel/net/tipc/node.c
+++ b/kernel/net/tipc/node.c
@@ -43,6 +43,8 @@
#include "monitor.h"
#include "discover.h"
#include "netlink.h"
+#include "trace.h"
+#include "crypto.h"
#define INVALID_NODE_SIG 0x10000
#define NODE_CLEANUP_AFTER 300000
@@ -73,6 +75,8 @@
struct sk_buff_head arrvq;
struct sk_buff_head inputq2;
struct sk_buff_head namedq;
+ u16 named_rcv_nxt;
+ bool named_open;
};
/**
@@ -88,6 +92,7 @@
* @links: array containing references to all links to node
* @action_flags: bit mask of different types of node actions
* @state: connectivity state vs peer node
+ * @preliminary: a preliminary node or not
* @sync_point: sequence number where synch/failover is finished
* @list: links to adjacent nodes in sorted list of cluster's nodes
* @working_links: number of working links to node (both active and standby)
@@ -98,6 +103,7 @@
* @publ_list: list of publications
* @rcu: rcu struct for tipc_node
* @delete_at: indicates the time for deleting a down node
+ * @crypto_rx: RX crypto handler
*/
struct tipc_node {
u32 addr;
@@ -111,6 +117,7 @@
int action_flags;
struct list_head list;
int state;
+ bool preliminary;
bool failover_sent;
u16 sync_point;
int link_cnt;
@@ -119,12 +126,18 @@
u32 signature;
u32 link_id;
u8 peer_id[16];
+ char peer_id_string[NODE_ID_STR_LEN];
struct list_head publ_list;
struct list_head conn_sks;
unsigned long keepalive_intv;
struct timer_list timer;
struct rcu_head rcu;
unsigned long delete_at;
+ struct net *peer_net;
+ u32 peer_hash_mix;
+#ifdef CONFIG_TIPC_CRYPTO
+ struct tipc_crypto *crypto_rx;
+#endif
};
/* Node FSM states and events:
@@ -162,7 +175,6 @@
static void tipc_node_fsm_evt(struct tipc_node *n, int evt);
static struct tipc_node *tipc_node_find(struct net *net, u32 addr);
static struct tipc_node *tipc_node_find_by_id(struct net *net, u8 *id);
-static void tipc_node_put(struct tipc_node *node);
static bool node_is_up(struct tipc_node *n);
static void tipc_node_delete_from_list(struct tipc_node *node);
@@ -183,7 +195,7 @@
return n->links[bearer_id].link;
}
-int tipc_node_get_mtu(struct net *net, u32 addr, u32 sel)
+int tipc_node_get_mtu(struct net *net, u32 addr, u32 sel, bool connected)
{
struct tipc_node *n;
int bearer_id;
@@ -192,6 +204,14 @@
n = tipc_node_find(net, addr);
if (unlikely(!n))
return mtu;
+
+ /* Allow MAX_MSG_SIZE when building connection oriented message
+ * if they are in the same core network
+ */
+ if (n->peer_net && connected) {
+ tipc_node_put(n);
+ return mtu;
+ }
bearer_id = n->active_links[sel & 1];
if (likely(bearer_id != INVALID_BEARER_ID))
@@ -234,20 +254,64 @@
return caps;
}
+u32 tipc_node_get_addr(struct tipc_node *node)
+{
+ return (node) ? node->addr : 0;
+}
+
+char *tipc_node_get_id_str(struct tipc_node *node)
+{
+ return node->peer_id_string;
+}
+
+#ifdef CONFIG_TIPC_CRYPTO
+/**
+ * tipc_node_crypto_rx - Retrieve crypto RX handle from node
+ * Note: node ref counter must be held first!
+ */
+struct tipc_crypto *tipc_node_crypto_rx(struct tipc_node *__n)
+{
+ return (__n) ? __n->crypto_rx : NULL;
+}
+
+struct tipc_crypto *tipc_node_crypto_rx_by_list(struct list_head *pos)
+{
+ return container_of(pos, struct tipc_node, list)->crypto_rx;
+}
+
+struct tipc_crypto *tipc_node_crypto_rx_by_addr(struct net *net, u32 addr)
+{
+ struct tipc_node *n;
+
+ n = tipc_node_find(net, addr);
+ return (n) ? n->crypto_rx : NULL;
+}
+#endif
+
+static void tipc_node_free(struct rcu_head *rp)
+{
+ struct tipc_node *n = container_of(rp, struct tipc_node, rcu);
+
+#ifdef CONFIG_TIPC_CRYPTO
+ tipc_crypto_stop(&n->crypto_rx);
+#endif
+ kfree(n);
+}
+
static void tipc_node_kref_release(struct kref *kref)
{
struct tipc_node *n = container_of(kref, struct tipc_node, kref);
kfree(n->bc_entry.link);
- kfree_rcu(n, rcu);
+ call_rcu(&n->rcu, tipc_node_free);
}
-static void tipc_node_put(struct tipc_node *node)
+void tipc_node_put(struct tipc_node *node)
{
kref_put(&node->kref, tipc_node_kref_release);
}
-static void tipc_node_get(struct tipc_node *node)
+void tipc_node_get(struct tipc_node *node)
{
kref_get(&node->kref);
}
@@ -263,7 +327,7 @@
rcu_read_lock();
hlist_for_each_entry_rcu(node, &tn->node_htable[thash], hash) {
- if (node->addr != addr)
+ if (node->addr != addr || node->preliminary)
continue;
if (!kref_get_unless_zero(&node->kref))
node = NULL;
@@ -342,10 +406,10 @@
write_unlock_bh(&n->lock);
if (flags & TIPC_NOTIFY_NODE_DOWN)
- tipc_publ_notify(net, publ_list, addr);
+ tipc_publ_notify(net, publ_list, addr, n->capabilities);
if (flags & TIPC_NOTIFY_NODE_UP)
- tipc_named_node_up(net, addr);
+ tipc_named_node_up(net, addr, n->capabilities);
if (flags & TIPC_NOTIFY_LINK_UP) {
tipc_mon_peer_up(net, addr, bearer_id);
@@ -359,29 +423,102 @@
}
}
-static struct tipc_node *tipc_node_create(struct net *net, u32 addr,
- u8 *peer_id, u16 capabilities)
+static void tipc_node_assign_peer_net(struct tipc_node *n, u32 hash_mixes)
+{
+ int net_id = tipc_netid(n->net);
+ struct tipc_net *tn_peer;
+ struct net *tmp;
+ u32 hash_chk;
+
+ if (n->peer_net)
+ return;
+
+ for_each_net_rcu(tmp) {
+ tn_peer = tipc_net(tmp);
+ if (!tn_peer)
+ continue;
+ /* Integrity checking whether node exists in namespace or not */
+ if (tn_peer->net_id != net_id)
+ continue;
+ if (memcmp(n->peer_id, tn_peer->node_id, NODE_ID_LEN))
+ continue;
+ hash_chk = tipc_net_hash_mixes(tmp, tn_peer->random);
+ if (hash_mixes ^ hash_chk)
+ continue;
+ n->peer_net = tmp;
+ n->peer_hash_mix = hash_mixes;
+ break;
+ }
+}
+
+struct tipc_node *tipc_node_create(struct net *net, u32 addr, u8 *peer_id,
+ u16 capabilities, u32 hash_mixes,
+ bool preliminary)
{
struct tipc_net *tn = net_generic(net, tipc_net_id);
+ struct tipc_link *l, *snd_l = tipc_bc_sndlink(net);
struct tipc_node *n, *temp_node;
- struct tipc_link *l;
+ unsigned long intv;
int bearer_id;
int i;
spin_lock_bh(&tn->node_list_lock);
- n = tipc_node_find(net, addr);
+ n = tipc_node_find(net, addr) ?:
+ tipc_node_find_by_id(net, peer_id);
if (n) {
+ if (!n->preliminary)
+ goto update;
+ if (preliminary)
+ goto exit;
+ /* A preliminary node becomes "real" now, refresh its data */
+ tipc_node_write_lock(n);
+ if (!tipc_link_bc_create(net, tipc_own_addr(net), addr, peer_id, U16_MAX,
+ tipc_link_min_win(snd_l), tipc_link_max_win(snd_l),
+ n->capabilities, &n->bc_entry.inputq1,
+ &n->bc_entry.namedq, snd_l, &n->bc_entry.link)) {
+ pr_warn("Broadcast rcv link refresh failed, no memory\n");
+ tipc_node_write_unlock_fast(n);
+ tipc_node_put(n);
+ n = NULL;
+ goto exit;
+ }
+ n->preliminary = false;
+ n->addr = addr;
+ hlist_del_rcu(&n->hash);
+ hlist_add_head_rcu(&n->hash,
+ &tn->node_htable[tipc_hashfn(addr)]);
+ list_del_rcu(&n->list);
+ list_for_each_entry_rcu(temp_node, &tn->node_list, list) {
+ if (n->addr < temp_node->addr)
+ break;
+ }
+ list_add_tail_rcu(&n->list, &temp_node->list);
+ tipc_node_write_unlock_fast(n);
+
+update:
+ if (n->peer_hash_mix ^ hash_mixes)
+ tipc_node_assign_peer_net(n, hash_mixes);
if (n->capabilities == capabilities)
goto exit;
/* Same node may come back with new capabilities */
- write_lock_bh(&n->lock);
+ tipc_node_write_lock(n);
n->capabilities = capabilities;
for (bearer_id = 0; bearer_id < MAX_BEARERS; bearer_id++) {
l = n->links[bearer_id].link;
if (l)
tipc_link_update_caps(l, capabilities);
}
- write_unlock_bh(&n->lock);
+ tipc_node_write_unlock_fast(n);
+
+ /* Calculate cluster capabilities */
+ tn->capabilities = TIPC_NODE_CAPABILITIES;
+ list_for_each_entry_rcu(temp_node, &tn->node_list, list) {
+ tn->capabilities &= temp_node->capabilities;
+ }
+
+ tipc_bcast_toggle_rcast(net,
+ (tn->capabilities & TIPC_BCAST_RCAST));
+
goto exit;
}
n = kzalloc(sizeof(*n), GFP_ATOMIC);
@@ -389,9 +526,23 @@
pr_warn("Node creation failed, no memory\n");
goto exit;
}
+ tipc_nodeid2string(n->peer_id_string, peer_id);
+#ifdef CONFIG_TIPC_CRYPTO
+ if (unlikely(tipc_crypto_start(&n->crypto_rx, net, n))) {
+ pr_warn("Failed to start crypto RX(%s)!\n", n->peer_id_string);
+ kfree(n);
+ n = NULL;
+ goto exit;
+ }
+#endif
n->addr = addr;
+ n->preliminary = preliminary;
memcpy(&n->peer_id, peer_id, 16);
n->net = net;
+ n->peer_net = NULL;
+ n->peer_hash_mix = 0;
+ /* Assign kernel local namespace if exists */
+ tipc_node_assign_peer_net(n, hash_mixes);
n->capabilities = capabilities;
kref_init(&n->kref);
rwlock_init(&n->lock);
@@ -410,14 +561,11 @@
n->signature = INVALID_NODE_SIG;
n->active_links[0] = INVALID_BEARER_ID;
n->active_links[1] = INVALID_BEARER_ID;
- if (!tipc_link_bc_create(net, tipc_own_addr(net),
- addr, U16_MAX,
- tipc_link_window(tipc_bc_sndlink(net)),
- n->capabilities,
- &n->bc_entry.inputq1,
- &n->bc_entry.namedq,
- tipc_bc_sndlink(net),
- &n->bc_entry.link)) {
+ if (!preliminary &&
+ !tipc_link_bc_create(net, tipc_own_addr(net), addr, peer_id, U16_MAX,
+ tipc_link_min_win(snd_l), tipc_link_max_win(snd_l),
+ n->capabilities, &n->bc_entry.inputq1,
+ &n->bc_entry.namedq, snd_l, &n->bc_entry.link)) {
pr_warn("Broadcast rcv link creation failed, no memory\n");
kfree(n);
n = NULL;
@@ -425,13 +573,24 @@
}
tipc_node_get(n);
timer_setup(&n->timer, tipc_node_timeout, 0);
- n->keepalive_intv = U32_MAX;
+ /* Start a slow timer anyway, crypto needs it */
+ n->keepalive_intv = 10000;
+ intv = jiffies + msecs_to_jiffies(n->keepalive_intv);
+ if (!mod_timer(&n->timer, intv))
+ tipc_node_get(n);
hlist_add_head_rcu(&n->hash, &tn->node_htable[tipc_hashfn(addr)]);
list_for_each_entry_rcu(temp_node, &tn->node_list, list) {
if (n->addr < temp_node->addr)
break;
}
list_add_tail_rcu(&n->list, &temp_node->list);
+ /* Calculate cluster capabilities */
+ tn->capabilities = TIPC_NODE_CAPABILITIES;
+ list_for_each_entry_rcu(temp_node, &tn->node_list, list) {
+ tn->capabilities &= temp_node->capabilities;
+ }
+ tipc_bcast_toggle_rcast(net, (tn->capabilities & TIPC_BCAST_RCAST));
+ trace_tipc_node_create(n, true, " ");
exit:
spin_unlock_bh(&tn->node_list_lock);
return n;
@@ -452,6 +611,9 @@
static void tipc_node_delete_from_list(struct tipc_node *node)
{
+#ifdef CONFIG_TIPC_CRYPTO
+ tipc_crypto_key_flush(node->crypto_rx);
+#endif
list_del_rcu(&node->list);
hlist_del_rcu(&node->hash);
tipc_node_put(node);
@@ -459,6 +621,7 @@
static void tipc_node_delete(struct tipc_node *node)
{
+ trace_tipc_node_delete(node, true, " ");
tipc_node_delete_from_list(node);
del_timer_sync(&node->timer);
@@ -586,6 +749,7 @@
*/
static bool tipc_node_cleanup(struct tipc_node *peer)
{
+ struct tipc_node *temp_node;
struct tipc_net *tn = tipc_net(peer->net);
bool deleted = false;
@@ -601,6 +765,19 @@
deleted = true;
}
tipc_node_write_unlock(peer);
+
+ if (!deleted) {
+ spin_unlock_bh(&tn->node_list_lock);
+ return deleted;
+ }
+
+ /* Calculate cluster capabilities */
+ tn->capabilities = TIPC_NODE_CAPABILITIES;
+ list_for_each_entry_rcu(temp_node, &tn->node_list, list) {
+ tn->capabilities &= temp_node->capabilities;
+ }
+ tipc_bcast_toggle_rcast(peer->net,
+ (tn->capabilities & TIPC_BCAST_RCAST));
spin_unlock_bh(&tn->node_list_lock);
return deleted;
}
@@ -616,12 +793,17 @@
int bearer_id;
int rc = 0;
+ trace_tipc_node_timeout(n, false, " ");
if (!node_is_up(n) && tipc_node_cleanup(n)) {
/*Removing the reference of Timer*/
tipc_node_put(n);
return;
}
+#ifdef CONFIG_TIPC_CRYPTO
+ /* Take any crypto key related actions first */
+ tipc_crypto_timeout(n->crypto_rx);
+#endif
__skb_queue_head_init(&xmitq);
/* Initial node interval to value larger (10 seconds), then it will be
@@ -642,7 +824,7 @@
remains--;
}
tipc_node_read_unlock(n);
- tipc_bearer_xmit(n->net, bearer_id, &xmitq, &le->maddr);
+ tipc_bearer_xmit(n->net, bearer_id, &xmitq, &le->maddr, n);
if (rc & TIPC_LINK_DOWN_EVT)
tipc_node_link_down(n, bearer_id, false);
}
@@ -674,13 +856,14 @@
n->link_id = tipc_link_id(nl);
/* Leave room for tunnel header when returning 'mtu' to users: */
- n->links[bearer_id].mtu = tipc_link_mtu(nl) - INT_H_SIZE;
+ n->links[bearer_id].mtu = tipc_link_mss(nl);
tipc_bearer_add_dest(n->net, bearer_id, n->addr);
tipc_bcast_inc_bearer_dst_cnt(n->net, bearer_id);
pr_debug("Established link <%s> on network plane %c\n",
tipc_link_name(nl), tipc_link_plane(nl));
+ trace_tipc_node_link_up(n, true, " ");
/* Ensure that a STATE message goes first */
tipc_link_build_state_msg(nl, xmitq);
@@ -690,7 +873,6 @@
*slot0 = bearer_id;
*slot1 = bearer_id;
tipc_node_fsm_evt(n, SELF_ESTABL_CONTACT_EVT);
- n->failover_sent = false;
n->action_flags |= TIPC_NOTIFY_NODE_UP;
tipc_link_set_active(nl, true);
tipc_bcast_add_peer(n->net, nl, xmitq);
@@ -728,8 +910,51 @@
tipc_node_write_lock(n);
__tipc_node_link_up(n, bearer_id, xmitq);
maddr = &n->links[bearer_id].maddr;
- tipc_bearer_xmit(n->net, bearer_id, xmitq, maddr);
+ tipc_bearer_xmit(n->net, bearer_id, xmitq, maddr, n);
tipc_node_write_unlock(n);
+}
+
+/**
+ * tipc_node_link_failover() - start failover in case "half-failover"
+ *
+ * This function is only called in a very special situation where link
+ * failover can be already started on peer node but not on this node.
+ * This can happen when e.g.
+ * 1. Both links <1A-2A>, <1B-2B> down
+ * 2. Link endpoint 2A up, but 1A still down (e.g. due to network
+ * disturbance, wrong session, etc.)
+ * 3. Link <1B-2B> up
+ * 4. Link endpoint 2A down (e.g. due to link tolerance timeout)
+ * 5. Node 2 starts failover onto link <1B-2B>
+ *
+ * ==> Node 1 does never start link/node failover!
+ *
+ * @n: tipc node structure
+ * @l: link peer endpoint failingover (- can be NULL)
+ * @tnl: tunnel link
+ * @xmitq: queue for messages to be xmited on tnl link later
+ */
+static void tipc_node_link_failover(struct tipc_node *n, struct tipc_link *l,
+ struct tipc_link *tnl,
+ struct sk_buff_head *xmitq)
+{
+ /* Avoid to be "self-failover" that can never end */
+ if (!tipc_link_is_up(tnl))
+ return;
+
+ /* Don't rush, failure link may be in the process of resetting */
+ if (l && !tipc_link_is_reset(l))
+ return;
+
+ tipc_link_fsm_evt(tnl, LINK_SYNCH_END_EVT);
+ tipc_node_fsm_evt(n, NODE_SYNCH_END_EVT);
+
+ n->sync_point = tipc_link_rcv_nxt(tnl) + (U16_MAX / 2 - 1);
+ tipc_link_failover_prepare(l, tnl, xmitq);
+
+ if (l)
+ tipc_link_fsm_evt(l, LINK_FAILOVER_BEGIN_EVT);
+ tipc_node_fsm_evt(n, NODE_FAILOVER_BEGIN_EVT);
}
/**
@@ -783,6 +1008,7 @@
if (tipc_link_peer_is_down(l))
tipc_node_fsm_evt(n, PEER_LOST_CONTACT_EVT);
tipc_node_fsm_evt(n, SELF_LOST_CONTACT_EVT);
+ trace_tipc_link_reset(l, TIPC_DUMP_ALL, "link down!");
tipc_link_fsm_evt(l, LINK_RESET_EVT);
tipc_link_reset(l);
tipc_link_build_reset_msg(l, xmitq);
@@ -800,6 +1026,7 @@
tipc_node_fsm_evt(n, NODE_SYNCH_END_EVT);
n->sync_point = tipc_link_rcv_nxt(tnl) + (U16_MAX / 2 - 1);
tipc_link_tnl_prepare(l, tnl, FAILOVER_MSG, xmitq);
+ trace_tipc_link_reset(l, TIPC_DUMP_ALL, "link down -> failover!");
tipc_link_reset(l);
tipc_link_fsm_evt(l, LINK_RESET_EVT);
tipc_link_fsm_evt(l, LINK_FAILOVER_BEGIN_EVT);
@@ -823,20 +1050,22 @@
tipc_node_write_lock(n);
if (!tipc_link_is_establishing(l)) {
__tipc_node_link_down(n, &bearer_id, &xmitq, &maddr);
- if (delete) {
- kfree(l);
- le->link = NULL;
- n->link_cnt--;
- }
} else {
/* Defuse pending tipc_node_link_up() */
+ tipc_link_reset(l);
tipc_link_fsm_evt(l, LINK_RESET_EVT);
}
+ if (delete) {
+ kfree(l);
+ le->link = NULL;
+ n->link_cnt--;
+ }
+ trace_tipc_node_link_down(n, true, "node link down or deleted!");
tipc_node_write_unlock(n);
if (delete)
tipc_mon_remove_peer(n->net, n->addr, old_bearer_id);
if (!skb_queue_empty(&xmitq))
- tipc_bearer_xmit(n->net, bearer_id, &xmitq, maddr);
+ tipc_bearer_xmit(n->net, bearer_id, &xmitq, maddr, n);
tipc_sk_rcv(n->net, &le->inputq);
}
@@ -880,6 +1109,8 @@
{
struct tipc_net *tn = tipc_net(net);
struct tipc_node *n;
+ bool preliminary;
+ u32 sugg_addr;
/* Suggest new address if some other peer is using this one */
n = tipc_node_find(net, addr);
@@ -895,9 +1126,11 @@
/* Suggest previously used address if peer is known */
n = tipc_node_find_by_id(net, id);
if (n) {
- addr = n->addr;
+ sugg_addr = n->addr;
+ preliminary = n->preliminary;
tipc_node_put(n);
- return addr;
+ if (!preliminary)
+ return sugg_addr;
}
/* Even this node may be in conflict */
@@ -909,7 +1142,7 @@
void tipc_node_check_dest(struct net *net, u32 addr,
u8 *peer_id, struct tipc_bearer *b,
- u16 capabilities, u32 signature,
+ u16 capabilities, u32 signature, u32 hash_mixes,
struct tipc_media_addr *maddr,
bool *respond, bool *dupl_addr)
{
@@ -928,7 +1161,8 @@
*dupl_addr = false;
*respond = false;
- n = tipc_node_create(net, addr, peer_id, capabilities);
+ n = tipc_node_create(net, addr, peer_id, capabilities, hash_mixes,
+ false);
if (!n)
return;
@@ -947,6 +1181,9 @@
if (sign_match && addr_match && link_up) {
/* All is fine. Do nothing. */
reset = false;
+ /* Peer node is not a container/local namespace */
+ if (!n->peer_hash_mix)
+ n->peer_hash_mix = hash_mixes;
} else if (sign_match && addr_match && !link_up) {
/* Respond. The link will come up in due time */
*respond = true;
@@ -1013,7 +1250,7 @@
get_random_bytes(&session, sizeof(u16));
if (!tipc_link_create(net, if_name, b->identity, b->tolerance,
b->net_plane, b->mtu, b->priority,
- b->window, session,
+ b->min_win, b->max_win, session,
tipc_own_addr(net), addr, peer_id,
n->capabilities,
tipc_bc_sndlink(n->net), n->bc_entry.link,
@@ -1022,6 +1259,7 @@
*respond = false;
goto exit;
}
+ trace_tipc_link_reset(l, TIPC_DUMP_ALL, "link created!");
tipc_link_reset(l);
tipc_link_fsm_evt(l, LINK_RESET_EVT);
if (n->state == NODE_FAILINGOVER)
@@ -1061,6 +1299,7 @@
pr_warn("Resetting all links to %x\n", n->addr);
+ trace_tipc_node_reset_links(n, true, " ");
for (i = 0; i < MAX_BEARERS; i++) {
tipc_node_link_down(n, i, false);
}
@@ -1236,11 +1475,13 @@
pr_err("Unknown node fsm state %x\n", state);
break;
}
+ trace_tipc_node_fsm(n->peer_id, n->state, state, evt);
n->state = state;
return;
illegal_evt:
pr_err("Illegal node fsm evt %x in state %x\n", evt, state);
+ trace_tipc_node_fsm(n->peer_id, n->state, state, evt);
}
static void node_lost_contact(struct tipc_node *n,
@@ -1254,9 +1495,11 @@
pr_debug("Lost contact with %x\n", n->addr);
n->delete_at = jiffies + msecs_to_jiffies(NODE_CLEANUP_AFTER);
+ trace_tipc_node_lost_contact(n, true, " ");
/* Clean up broadcast state */
tipc_bcast_remove_peer(n->net, n->bc_entry.link);
+ skb_queue_purge(&n->bc_entry.namedq);
/* Abort any ongoing link failover */
for (i = 0; i < MAX_BEARERS; i++) {
@@ -1267,7 +1510,8 @@
/* Notify publications from this node */
n->action_flags |= TIPC_NOTIFY_NODE_DOWN;
-
+ n->peer_net = NULL;
+ n->peer_hash_mix = 0;
/* Notify sockets connected to node */
list_for_each_entry_safe(conn, safe, conns, list) {
skb = tipc_msg_create(TIPC_CRITICAL_IMPORTANCE, TIPC_CONN_MSG,
@@ -1285,7 +1529,7 @@
* tipc_node_get_linkname - get the name of a link
*
* @bearer_id: id of the bearer
- * @node: peer node address
+ * @addr: peer node address
* @linkname: link name output buffer
*
* Returns 0 on success
@@ -1326,7 +1570,7 @@
if (!hdr)
return -EMSGSIZE;
- attrs = nla_nest_start(msg->skb, TIPC_NLA_NODE);
+ attrs = nla_nest_start_noflag(msg->skb, TIPC_NLA_NODE);
if (!attrs)
goto msg_full;
@@ -1349,6 +1593,57 @@
return -EMSGSIZE;
}
+static void tipc_lxc_xmit(struct net *peer_net, struct sk_buff_head *list)
+{
+ struct tipc_msg *hdr = buf_msg(skb_peek(list));
+ struct sk_buff_head inputq;
+
+ switch (msg_user(hdr)) {
+ case TIPC_LOW_IMPORTANCE:
+ case TIPC_MEDIUM_IMPORTANCE:
+ case TIPC_HIGH_IMPORTANCE:
+ case TIPC_CRITICAL_IMPORTANCE:
+ if (msg_connected(hdr) || msg_named(hdr) ||
+ msg_direct(hdr)) {
+ tipc_loopback_trace(peer_net, list);
+ spin_lock_init(&list->lock);
+ tipc_sk_rcv(peer_net, list);
+ return;
+ }
+ if (msg_mcast(hdr)) {
+ tipc_loopback_trace(peer_net, list);
+ skb_queue_head_init(&inputq);
+ tipc_sk_mcast_rcv(peer_net, list, &inputq);
+ __skb_queue_purge(list);
+ skb_queue_purge(&inputq);
+ return;
+ }
+ return;
+ case MSG_FRAGMENTER:
+ if (tipc_msg_assemble(list)) {
+ tipc_loopback_trace(peer_net, list);
+ skb_queue_head_init(&inputq);
+ tipc_sk_mcast_rcv(peer_net, list, &inputq);
+ __skb_queue_purge(list);
+ skb_queue_purge(&inputq);
+ }
+ return;
+ case GROUP_PROTOCOL:
+ case CONN_MANAGER:
+ tipc_loopback_trace(peer_net, list);
+ spin_lock_init(&list->lock);
+ tipc_sk_rcv(peer_net, list);
+ return;
+ case LINK_PROTOCOL:
+ case NAME_DISTRIBUTOR:
+ case TUNNEL_PROTOCOL:
+ case BCAST_PROTOCOL:
+ return;
+ default:
+ return;
+ };
+}
+
/**
* tipc_node_xmit() is the general link level function for message sending
* @net: the applicable net namespace
@@ -1364,10 +1659,13 @@
struct tipc_link_entry *le = NULL;
struct tipc_node *n;
struct sk_buff_head xmitq;
+ bool node_up = false;
+ struct net *peer_net;
int bearer_id;
int rc;
if (in_own_node(net, dnode)) {
+ tipc_loopback_trace(net, list);
spin_lock_init(&list->lock);
tipc_sk_rcv(net, list);
return 0;
@@ -1378,6 +1676,22 @@
__skb_queue_purge(list);
return -EHOSTUNREACH;
}
+
+ rcu_read_lock();
+ tipc_node_read_lock(n);
+ node_up = node_is_up(n);
+ peer_net = n->peer_net;
+ tipc_node_read_unlock(n);
+ if (node_up && peer_net && check_net(peer_net)) {
+ /* xmit inner linux container */
+ tipc_lxc_xmit(peer_net, list);
+ if (likely(skb_queue_empty(list))) {
+ rcu_read_unlock();
+ tipc_node_put(n);
+ return 0;
+ }
+ }
+ rcu_read_unlock();
tipc_node_read_lock(n);
bearer_id = n->active_links[selector & 1];
@@ -1398,7 +1712,7 @@
if (unlikely(rc == -ENOBUFS))
tipc_node_link_down(n, bearer_id, false);
else
- tipc_bearer_xmit(net, bearer_id, &xmitq, &le->maddr);
+ tipc_bearer_xmit(net, bearer_id, &xmitq, &le->maddr, n);
tipc_node_put(n);
@@ -1438,12 +1752,23 @@
return 0;
}
-void tipc_node_broadcast(struct net *net, struct sk_buff *skb)
+void tipc_node_broadcast(struct net *net, struct sk_buff *skb, int rc_dests)
{
+ struct sk_buff_head xmitq;
struct sk_buff *txskb;
struct tipc_node *n;
+ u16 dummy;
u32 dst;
+ /* Use broadcast if all nodes support it */
+ if (!rc_dests && tipc_bcast_get_mode(net) != BCLINK_MODE_RCAST) {
+ __skb_queue_head_init(&xmitq);
+ __skb_queue_tail(&xmitq, skb);
+ tipc_bcast_xmit(net, &xmitq, &dummy);
+ return;
+ }
+
+ /* Otherwise use legacy replicast method */
rcu_read_lock();
list_for_each_entry_rcu(n, tipc_nodes(net), list) {
dst = n->addr;
@@ -1458,7 +1783,6 @@
tipc_node_xmit_skb(net, txskb, dst, 0);
}
rcu_read_unlock();
-
kfree_skb(skb);
}
@@ -1481,7 +1805,7 @@
struct tipc_link *ucl;
int rc;
- rc = tipc_bcast_sync_rcv(n->net, n->bc_entry.link, hdr);
+ rc = tipc_bcast_sync_rcv(n->net, n->bc_entry.link, hdr, xmitq);
if (rc & TIPC_LINK_DOWN_EVT) {
tipc_node_reset_links(n);
@@ -1546,10 +1870,16 @@
}
if (!skb_queue_empty(&xmitq))
- tipc_bearer_xmit(net, bearer_id, &xmitq, &le->maddr);
+ tipc_bearer_xmit(net, bearer_id, &xmitq, &le->maddr, n);
if (!skb_queue_empty(&be->inputq1))
tipc_node_mcast_rcv(n);
+
+ /* Handle NAME_DISTRIBUTOR messages sent from 1.7 nodes */
+ if (!skb_queue_empty(&n->bc_entry.namedq))
+ tipc_named_rcv(net, &n->bc_entry.namedq,
+ &n->bc_entry.named_rcv_nxt,
+ &n->bc_entry.named_open);
/* If reassembly or retransmission failure => reset all links to peer */
if (rc & TIPC_LINK_DOWN_EVT)
@@ -1571,7 +1901,6 @@
int usr = msg_user(hdr);
int mtyp = msg_type(hdr);
u16 oseqno = msg_seqno(hdr);
- u16 iseqno = msg_seqno(msg_get_wrapped(hdr));
u16 exp_pkts = msg_msgcnt(hdr);
u16 rcv_nxt, syncpt, dlv_nxt, inputq_len;
int state = n->state;
@@ -1579,6 +1908,10 @@
struct tipc_media_addr *maddr;
int pb_id;
+ if (trace_tipc_node_check_state_enabled()) {
+ trace_tipc_skb_dump(skb, false, "skb for node state check");
+ trace_tipc_node_check_state(n, true, " ");
+ }
l = n->links[bearer_id].link;
if (!l)
return false;
@@ -1596,8 +1929,11 @@
}
}
- if (!tipc_link_validate_msg(l, hdr))
+ if (!tipc_link_validate_msg(l, hdr)) {
+ trace_tipc_skb_dump(skb, false, "PROTO invalid (2)!");
+ trace_tipc_link_dump(l, TIPC_DUMP_NONE, "PROTO invalid (2)!");
return false;
+ }
/* Check and update node accesibility if applicable */
if (state == SELF_UP_PEER_COMING) {
@@ -1625,19 +1961,23 @@
/* Initiate or update failover mode if applicable */
if ((usr == TUNNEL_PROTOCOL) && (mtyp == FAILOVER_MSG)) {
syncpt = oseqno + exp_pkts - 1;
- if (pl && tipc_link_is_up(pl)) {
+ if (pl && !tipc_link_is_reset(pl)) {
__tipc_node_link_down(n, &pb_id, xmitq, &maddr);
+ trace_tipc_node_link_down(n, true,
+ "node link down <- failover!");
tipc_skb_queue_splice_tail_init(tipc_link_inputq(pl),
tipc_link_inputq(l));
}
+
/* If parallel link was already down, and this happened before
- * the tunnel link came up, FAILOVER was never sent. Ensure that
- * FAILOVER is sent to get peer out of NODE_FAILINGOVER state.
+ * the tunnel link came up, node failover was never started.
+ * Ensure that a FAILOVER_MSG is sent to get peer out of
+ * NODE_FAILINGOVER state, also this node must accept
+ * TUNNEL_MSGs from peer.
*/
- if (n->state != NODE_FAILINGOVER && !n->failover_sent) {
- tipc_link_create_dummy_tnl_msg(l, xmitq);
- n->failover_sent = true;
- }
+ if (n->state != NODE_FAILINGOVER)
+ tipc_node_link_failover(n, pl, l, xmitq);
+
/* If pkts arrive out of order, use lowest calculated syncpt */
if (less(syncpt, n->sync_point))
n->sync_point = syncpt;
@@ -1659,7 +1999,10 @@
/* Initiate synch mode if applicable */
if ((usr == TUNNEL_PROTOCOL) && (mtyp == SYNCH_MSG) && (oseqno == 1)) {
- syncpt = iseqno + exp_pkts - 1;
+ if (n->capabilities & TIPC_TUNNEL_ENHANCED)
+ syncpt = msg_syncpt(hdr);
+ else
+ syncpt = msg_seqno(msg_inner_hdr(hdr)) + exp_pkts - 1;
if (!tipc_link_is_up(l))
__tipc_node_link_up(n, bearer_id, xmitq);
if (n->state == SELF_UP_PEER_UP) {
@@ -1699,7 +2042,7 @@
* tipc_rcv - process TIPC packets/messages arriving from off-node
* @net: the applicable net namespace
* @skb: TIPC packet
- * @bearer: pointer to bearer message arrived on
+ * @b: pointer to bearer message arrived on
*
* Invoked with no locks held. Bearer pointer must point to a valid bearer
* structure (i.e. cannot be NULL), but bearer can be inactive.
@@ -1707,19 +2050,38 @@
void tipc_rcv(struct net *net, struct sk_buff *skb, struct tipc_bearer *b)
{
struct sk_buff_head xmitq;
- struct tipc_node *n;
- struct tipc_msg *hdr;
- int bearer_id = b->identity;
struct tipc_link_entry *le;
+ struct tipc_msg *hdr;
+ struct tipc_node *n;
+ int bearer_id = b->identity;
u32 self = tipc_own_addr(net);
int usr, rc = 0;
u16 bc_ack;
+#ifdef CONFIG_TIPC_CRYPTO
+ struct tipc_ehdr *ehdr;
- __skb_queue_head_init(&xmitq);
+ /* Check if message must be decrypted first */
+ if (TIPC_SKB_CB(skb)->decrypted || !tipc_ehdr_validate(skb))
+ goto rcv;
+ ehdr = (struct tipc_ehdr *)skb->data;
+ if (likely(ehdr->user != LINK_CONFIG)) {
+ n = tipc_node_find(net, ntohl(ehdr->addr));
+ if (unlikely(!n))
+ goto discard;
+ } else {
+ n = tipc_node_find_by_id(net, ehdr->id);
+ }
+ tipc_crypto_rcv(net, (n) ? n->crypto_rx : NULL, &skb, b);
+ if (!skb)
+ return;
+
+rcv:
+#endif
/* Ensure message is well-formed before touching the header */
if (unlikely(!tipc_msg_validate(&skb)))
goto discard;
+ __skb_queue_head_init(&xmitq);
hdr = buf_msg(skb);
usr = msg_user(hdr);
bc_ack = msg_bcast_ack(hdr);
@@ -1743,10 +2105,16 @@
le = &n->links[bearer_id];
/* Ensure broadcast reception is in synch with peer's send state */
- if (unlikely(usr == LINK_PROTOCOL))
+ if (unlikely(usr == LINK_PROTOCOL)) {
+ if (unlikely(skb_linearize(skb))) {
+ tipc_node_put(n);
+ goto discard;
+ }
+ hdr = buf_msg(skb);
tipc_node_bc_sync_rcv(n, hdr, bearer_id, &xmitq);
- else if (unlikely(tipc_link_acked(n->bc_entry.link) != bc_ack))
+ } else if (unlikely(tipc_link_acked(n->bc_entry.link) != bc_ack)) {
tipc_bcast_ack_rcv(net, n->bc_entry.link, hdr);
+ }
/* Receive packet directly if conditions permit */
tipc_node_read_lock(n);
@@ -1763,7 +2131,7 @@
/* Check/update node state before receiving */
if (unlikely(skb)) {
if (unlikely(skb_linearize(skb)))
- goto discard;
+ goto out_node_put;
tipc_node_write_lock(n);
if (tipc_node_check_state(n, skb, bearer_id, &xmitq)) {
if (le->link) {
@@ -1781,7 +2149,9 @@
tipc_node_link_down(n, bearer_id, false);
if (unlikely(!skb_queue_empty(&n->bc_entry.namedq)))
- tipc_named_rcv(net, &n->bc_entry.namedq);
+ tipc_named_rcv(net, &n->bc_entry.namedq,
+ &n->bc_entry.named_rcv_nxt,
+ &n->bc_entry.named_open);
if (unlikely(!skb_queue_empty(&n->bc_entry.inputq1)))
tipc_node_mcast_rcv(n);
@@ -1790,8 +2160,9 @@
tipc_sk_rcv(net, &le->inputq);
if (!skb_queue_empty(&xmitq))
- tipc_bearer_xmit(net, bearer_id, &xmitq, &le->maddr);
+ tipc_bearer_xmit(net, bearer_id, &xmitq, &le->maddr, n);
+out_node_put:
tipc_node_put(n);
discard:
kfree_skb(skb);
@@ -1819,9 +2190,13 @@
&xmitq);
else if (prop == TIPC_NLA_PROP_MTU)
tipc_link_set_mtu(e->link, b->mtu);
+
+ /* Update MTU for node link entry */
+ e->mtu = tipc_link_mss(e->link);
}
+
tipc_node_write_unlock(n);
- tipc_bearer_xmit(net, bearer_id, &xmitq, &e->maddr);
+ tipc_bearer_xmit(net, bearer_id, &xmitq, &e->maddr, NULL);
}
rcu_read_unlock();
@@ -1832,7 +2207,7 @@
struct net *net = sock_net(skb->sk);
struct tipc_net *tn = net_generic(net, tipc_net_id);
struct nlattr *attrs[TIPC_NLA_NET_MAX + 1];
- struct tipc_node *peer;
+ struct tipc_node *peer, *temp_node;
u32 addr;
int err;
@@ -1840,9 +2215,9 @@
if (!info->attrs[TIPC_NLA_NET])
return -EINVAL;
- err = nla_parse_nested(attrs, TIPC_NLA_NET_MAX,
- info->attrs[TIPC_NLA_NET], tipc_nl_net_policy,
- info->extack);
+ err = nla_parse_nested_deprecated(attrs, TIPC_NLA_NET_MAX,
+ info->attrs[TIPC_NLA_NET],
+ tipc_nl_net_policy, info->extack);
if (err)
return err;
@@ -1873,6 +2248,12 @@
tipc_node_write_unlock(peer);
tipc_node_delete(peer);
+ /* Calculate cluster capabilities */
+ tn->capabilities = TIPC_NODE_CAPABILITIES;
+ list_for_each_entry_rcu(temp_node, &tn->node_list, list) {
+ tn->capabilities &= temp_node->capabilities;
+ }
+ tipc_bcast_toggle_rcast(net, (tn->capabilities & TIPC_BCAST_RCAST));
err = 0;
err_out:
tipc_node_put(peer);
@@ -1917,6 +2298,8 @@
}
list_for_each_entry_rcu(node, &tn->node_list, list) {
+ if (node->preliminary)
+ continue;
if (last_addr) {
if (node->addr == last_addr)
last_addr = 0;
@@ -1998,9 +2381,9 @@
if (!info->attrs[TIPC_NLA_LINK])
return -EINVAL;
- err = nla_parse_nested(attrs, TIPC_NLA_LINK_MAX,
- info->attrs[TIPC_NLA_LINK],
- tipc_nl_link_policy, info->extack);
+ err = nla_parse_nested_deprecated(attrs, TIPC_NLA_LINK_MAX,
+ info->attrs[TIPC_NLA_LINK],
+ tipc_nl_link_policy, info->extack);
if (err)
return err;
@@ -2027,8 +2410,7 @@
if (attrs[TIPC_NLA_LINK_PROP]) {
struct nlattr *props[TIPC_NLA_PROP_MAX + 1];
- err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_LINK_PROP],
- props);
+ err = tipc_nl_parse_link_prop(attrs[TIPC_NLA_LINK_PROP], props);
if (err) {
res = err;
goto out;
@@ -2047,16 +2429,19 @@
tipc_link_set_prio(link, prio, &xmitq);
}
if (props[TIPC_NLA_PROP_WIN]) {
- u32 win;
+ u32 max_win;
- win = nla_get_u32(props[TIPC_NLA_PROP_WIN]);
- tipc_link_set_queue_limits(link, win);
+ max_win = nla_get_u32(props[TIPC_NLA_PROP_WIN]);
+ tipc_link_set_queue_limits(link,
+ tipc_link_min_win(link),
+ max_win);
}
}
out:
tipc_node_read_unlock(node);
- tipc_bearer_xmit(net, bearer_id, &xmitq, &node->links[bearer_id].maddr);
+ tipc_bearer_xmit(net, bearer_id, &xmitq, &node->links[bearer_id].maddr,
+ NULL);
return res;
}
@@ -2074,9 +2459,9 @@
if (!info->attrs[TIPC_NLA_LINK])
return -EINVAL;
- err = nla_parse_nested(attrs, TIPC_NLA_LINK_MAX,
- info->attrs[TIPC_NLA_LINK],
- tipc_nl_link_policy, info->extack);
+ err = nla_parse_nested_deprecated(attrs, TIPC_NLA_LINK_MAX,
+ info->attrs[TIPC_NLA_LINK],
+ tipc_nl_link_policy, info->extack);
if (err)
return err;
@@ -2090,7 +2475,7 @@
return -ENOMEM;
if (strcmp(name, tipc_bclink_name) == 0) {
- err = tipc_nl_add_bc_link(net, &msg);
+ err = tipc_nl_add_bc_link(net, &msg, tipc_net(net)->bcl);
if (err)
goto err_free;
} else {
@@ -2134,14 +2519,15 @@
struct tipc_node *node;
struct nlattr *attrs[TIPC_NLA_LINK_MAX + 1];
struct net *net = sock_net(skb->sk);
+ struct tipc_net *tn = tipc_net(net);
struct tipc_link_entry *le;
if (!info->attrs[TIPC_NLA_LINK])
return -EINVAL;
- err = nla_parse_nested(attrs, TIPC_NLA_LINK_MAX,
- info->attrs[TIPC_NLA_LINK],
- tipc_nl_link_policy, info->extack);
+ err = nla_parse_nested_deprecated(attrs, TIPC_NLA_LINK_MAX,
+ info->attrs[TIPC_NLA_LINK],
+ tipc_nl_link_policy, info->extack);
if (err)
return err;
@@ -2150,11 +2536,26 @@
link_name = nla_data(attrs[TIPC_NLA_LINK_NAME]);
- if (strcmp(link_name, tipc_bclink_name) == 0) {
- err = tipc_bclink_reset_stats(net);
+ err = -EINVAL;
+ if (!strcmp(link_name, tipc_bclink_name)) {
+ err = tipc_bclink_reset_stats(net, tipc_bc_sndlink(net));
if (err)
return err;
return 0;
+ } else if (strstr(link_name, tipc_bclink_name)) {
+ rcu_read_lock();
+ list_for_each_entry_rcu(node, &tn->node_list, list) {
+ tipc_node_read_lock(node);
+ link = node->bc_entry.link;
+ if (link && !strcmp(link_name, tipc_link_name(link))) {
+ err = tipc_bclink_reset_stats(net, link);
+ tipc_node_read_unlock(node);
+ break;
+ }
+ tipc_node_read_unlock(node);
+ }
+ rcu_read_unlock();
+ return err;
}
node = tipc_node_find_by_name(net, link_name, &bearer_id);
@@ -2178,7 +2579,8 @@
/* Caller should hold node lock */
static int __tipc_nl_add_node_links(struct net *net, struct tipc_nl_msg *msg,
- struct tipc_node *node, u32 *prev_link)
+ struct tipc_node *node, u32 *prev_link,
+ bool bc_link)
{
u32 i;
int err;
@@ -2194,6 +2596,14 @@
if (err)
return err;
}
+
+ if (bc_link) {
+ *prev_link = i;
+ err = tipc_nl_add_bc_link(net, msg, node->bc_entry.link);
+ if (err)
+ return err;
+ }
+
*prev_link = 0;
return 0;
@@ -2202,16 +2612,35 @@
int tipc_nl_node_dump_link(struct sk_buff *skb, struct netlink_callback *cb)
{
struct net *net = sock_net(skb->sk);
+ struct nlattr **attrs = genl_dumpit_info(cb)->attrs;
+ struct nlattr *link[TIPC_NLA_LINK_MAX + 1];
struct tipc_net *tn = net_generic(net, tipc_net_id);
struct tipc_node *node;
struct tipc_nl_msg msg;
u32 prev_node = cb->args[0];
u32 prev_link = cb->args[1];
int done = cb->args[2];
+ bool bc_link = cb->args[3];
int err;
if (done)
return 0;
+
+ if (!prev_node) {
+ /* Check if broadcast-receiver links dumping is needed */
+ if (attrs && attrs[TIPC_NLA_LINK]) {
+ err = nla_parse_nested_deprecated(link,
+ TIPC_NLA_LINK_MAX,
+ attrs[TIPC_NLA_LINK],
+ tipc_nl_link_policy,
+ NULL);
+ if (unlikely(err))
+ return err;
+ if (unlikely(!link[TIPC_NLA_LINK_BROADCAST]))
+ return -EINVAL;
+ bc_link = true;
+ }
+ }
msg.skb = skb;
msg.portid = NETLINK_CB(cb->skb).portid;
@@ -2236,7 +2665,7 @@
list) {
tipc_node_read_lock(node);
err = __tipc_nl_add_node_links(net, &msg, node,
- &prev_link);
+ &prev_link, bc_link);
tipc_node_read_unlock(node);
if (err)
goto out;
@@ -2244,14 +2673,14 @@
prev_node = node->addr;
}
} else {
- err = tipc_nl_add_bc_link(net, &msg);
+ err = tipc_nl_add_bc_link(net, &msg, tn->bcl);
if (err)
goto out;
list_for_each_entry_rcu(node, &tn->node_list, list) {
tipc_node_read_lock(node);
err = __tipc_nl_add_node_links(net, &msg, node,
- &prev_link);
+ &prev_link, bc_link);
tipc_node_read_unlock(node);
if (err)
goto out;
@@ -2266,6 +2695,7 @@
cb->args[0] = prev_node;
cb->args[1] = prev_link;
cb->args[2] = done;
+ cb->args[3] = bc_link;
return skb->len;
}
@@ -2279,9 +2709,10 @@
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, info->extack);
+ err = nla_parse_nested_deprecated(attrs, TIPC_NLA_MON_MAX,
+ info->attrs[TIPC_NLA_MON],
+ tipc_nl_monitor_policy,
+ info->extack);
if (err)
return err;
@@ -2308,7 +2739,7 @@
if (!hdr)
return -EMSGSIZE;
- attrs = nla_nest_start(msg->skb, TIPC_NLA_MON);
+ attrs = nla_nest_start_noflag(msg->skb, TIPC_NLA_MON);
if (!attrs)
goto msg_full;
@@ -2389,19 +2820,16 @@
int err;
if (!prev_node) {
- struct nlattr **attrs;
+ struct nlattr **attrs = genl_dumpit_info(cb)->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, NULL);
+ err = nla_parse_nested_deprecated(mon, TIPC_NLA_MON_MAX,
+ attrs[TIPC_NLA_MON],
+ tipc_nl_monitor_policy,
+ NULL);
if (err)
return err;
@@ -2433,3 +2861,256 @@
return skb->len;
}
+
+#ifdef CONFIG_TIPC_CRYPTO
+static int tipc_nl_retrieve_key(struct nlattr **attrs,
+ struct tipc_aead_key **pkey)
+{
+ struct nlattr *attr = attrs[TIPC_NLA_NODE_KEY];
+ struct tipc_aead_key *key;
+
+ if (!attr)
+ return -ENODATA;
+
+ if (nla_len(attr) < sizeof(*key))
+ return -EINVAL;
+ key = (struct tipc_aead_key *)nla_data(attr);
+ if (key->keylen > TIPC_AEAD_KEYLEN_MAX ||
+ nla_len(attr) < tipc_aead_key_size(key))
+ return -EINVAL;
+
+ *pkey = key;
+ return 0;
+}
+
+static int tipc_nl_retrieve_nodeid(struct nlattr **attrs, u8 **node_id)
+{
+ struct nlattr *attr = attrs[TIPC_NLA_NODE_ID];
+
+ if (!attr)
+ return -ENODATA;
+
+ if (nla_len(attr) < TIPC_NODEID_LEN)
+ return -EINVAL;
+
+ *node_id = (u8 *)nla_data(attr);
+ return 0;
+}
+
+static int tipc_nl_retrieve_rekeying(struct nlattr **attrs, u32 *intv)
+{
+ struct nlattr *attr = attrs[TIPC_NLA_NODE_REKEYING];
+
+ if (!attr)
+ return -ENODATA;
+
+ *intv = nla_get_u32(attr);
+ return 0;
+}
+
+static int __tipc_nl_node_set_key(struct sk_buff *skb, struct genl_info *info)
+{
+ struct nlattr *attrs[TIPC_NLA_NODE_MAX + 1];
+ struct net *net = sock_net(skb->sk);
+ struct tipc_crypto *tx = tipc_net(net)->crypto_tx, *c = tx;
+ struct tipc_node *n = NULL;
+ struct tipc_aead_key *ukey;
+ bool rekeying = true, master_key = false;
+ u8 *id, *own_id, mode;
+ u32 intv = 0;
+ int rc = 0;
+
+ if (!info->attrs[TIPC_NLA_NODE])
+ return -EINVAL;
+
+ rc = nla_parse_nested(attrs, TIPC_NLA_NODE_MAX,
+ info->attrs[TIPC_NLA_NODE],
+ tipc_nl_node_policy, info->extack);
+ if (rc)
+ return rc;
+
+ own_id = tipc_own_id(net);
+ if (!own_id) {
+ GENL_SET_ERR_MSG(info, "not found own node identity (set id?)");
+ return -EPERM;
+ }
+
+ rc = tipc_nl_retrieve_rekeying(attrs, &intv);
+ if (rc == -ENODATA)
+ rekeying = false;
+
+ rc = tipc_nl_retrieve_key(attrs, &ukey);
+ if (rc == -ENODATA && rekeying)
+ goto rekeying;
+ else if (rc)
+ return rc;
+
+ rc = tipc_aead_key_validate(ukey, info);
+ if (rc)
+ return rc;
+
+ rc = tipc_nl_retrieve_nodeid(attrs, &id);
+ switch (rc) {
+ case -ENODATA:
+ mode = CLUSTER_KEY;
+ master_key = !!(attrs[TIPC_NLA_NODE_KEY_MASTER]);
+ break;
+ case 0:
+ mode = PER_NODE_KEY;
+ if (memcmp(id, own_id, NODE_ID_LEN)) {
+ n = tipc_node_find_by_id(net, id) ?:
+ tipc_node_create(net, 0, id, 0xffffu, 0, true);
+ if (unlikely(!n))
+ return -ENOMEM;
+ c = n->crypto_rx;
+ }
+ break;
+ default:
+ return rc;
+ }
+
+ /* Initiate the TX/RX key */
+ rc = tipc_crypto_key_init(c, ukey, mode, master_key);
+ if (n)
+ tipc_node_put(n);
+
+ if (unlikely(rc < 0)) {
+ GENL_SET_ERR_MSG(info, "unable to initiate or attach new key");
+ return rc;
+ } else if (c == tx) {
+ /* Distribute TX key but not master one */
+ if (!master_key && tipc_crypto_key_distr(tx, rc, NULL))
+ GENL_SET_ERR_MSG(info, "failed to replicate new key");
+rekeying:
+ /* Schedule TX rekeying if needed */
+ tipc_crypto_rekeying_sched(tx, rekeying, intv);
+ }
+
+ return 0;
+}
+
+int tipc_nl_node_set_key(struct sk_buff *skb, struct genl_info *info)
+{
+ int err;
+
+ rtnl_lock();
+ err = __tipc_nl_node_set_key(skb, info);
+ rtnl_unlock();
+
+ return err;
+}
+
+static int __tipc_nl_node_flush_key(struct sk_buff *skb,
+ struct genl_info *info)
+{
+ struct net *net = sock_net(skb->sk);
+ struct tipc_net *tn = tipc_net(net);
+ struct tipc_node *n;
+
+ tipc_crypto_key_flush(tn->crypto_tx);
+ rcu_read_lock();
+ list_for_each_entry_rcu(n, &tn->node_list, list)
+ tipc_crypto_key_flush(n->crypto_rx);
+ rcu_read_unlock();
+
+ return 0;
+}
+
+int tipc_nl_node_flush_key(struct sk_buff *skb, struct genl_info *info)
+{
+ int err;
+
+ rtnl_lock();
+ err = __tipc_nl_node_flush_key(skb, info);
+ rtnl_unlock();
+
+ return err;
+}
+#endif
+
+/**
+ * tipc_node_dump - dump TIPC node data
+ * @n: tipc node to be dumped
+ * @more: dump more?
+ * - false: dump only tipc node data
+ * - true: dump node link data as well
+ * @buf: returned buffer of dump data in format
+ */
+int tipc_node_dump(struct tipc_node *n, bool more, char *buf)
+{
+ int i = 0;
+ size_t sz = (more) ? NODE_LMAX : NODE_LMIN;
+
+ if (!n) {
+ i += scnprintf(buf, sz, "node data: (null)\n");
+ return i;
+ }
+
+ i += scnprintf(buf, sz, "node data: %x", n->addr);
+ i += scnprintf(buf + i, sz - i, " %x", n->state);
+ i += scnprintf(buf + i, sz - i, " %d", n->active_links[0]);
+ i += scnprintf(buf + i, sz - i, " %d", n->active_links[1]);
+ i += scnprintf(buf + i, sz - i, " %x", n->action_flags);
+ i += scnprintf(buf + i, sz - i, " %u", n->failover_sent);
+ i += scnprintf(buf + i, sz - i, " %u", n->sync_point);
+ i += scnprintf(buf + i, sz - i, " %d", n->link_cnt);
+ i += scnprintf(buf + i, sz - i, " %u", n->working_links);
+ i += scnprintf(buf + i, sz - i, " %x", n->capabilities);
+ i += scnprintf(buf + i, sz - i, " %lu\n", n->keepalive_intv);
+
+ if (!more)
+ return i;
+
+ i += scnprintf(buf + i, sz - i, "link_entry[0]:\n");
+ i += scnprintf(buf + i, sz - i, " mtu: %u\n", n->links[0].mtu);
+ i += scnprintf(buf + i, sz - i, " media: ");
+ i += tipc_media_addr_printf(buf + i, sz - i, &n->links[0].maddr);
+ i += scnprintf(buf + i, sz - i, "\n");
+ i += tipc_link_dump(n->links[0].link, TIPC_DUMP_NONE, buf + i);
+ i += scnprintf(buf + i, sz - i, " inputq: ");
+ i += tipc_list_dump(&n->links[0].inputq, false, buf + i);
+
+ i += scnprintf(buf + i, sz - i, "link_entry[1]:\n");
+ i += scnprintf(buf + i, sz - i, " mtu: %u\n", n->links[1].mtu);
+ i += scnprintf(buf + i, sz - i, " media: ");
+ i += tipc_media_addr_printf(buf + i, sz - i, &n->links[1].maddr);
+ i += scnprintf(buf + i, sz - i, "\n");
+ i += tipc_link_dump(n->links[1].link, TIPC_DUMP_NONE, buf + i);
+ i += scnprintf(buf + i, sz - i, " inputq: ");
+ i += tipc_list_dump(&n->links[1].inputq, false, buf + i);
+
+ i += scnprintf(buf + i, sz - i, "bclink:\n ");
+ i += tipc_link_dump(n->bc_entry.link, TIPC_DUMP_NONE, buf + i);
+
+ return i;
+}
+
+void tipc_node_pre_cleanup_net(struct net *exit_net)
+{
+ struct tipc_node *n;
+ struct tipc_net *tn;
+ struct net *tmp;
+
+ rcu_read_lock();
+ for_each_net_rcu(tmp) {
+ if (tmp == exit_net)
+ continue;
+ tn = tipc_net(tmp);
+ if (!tn)
+ continue;
+ spin_lock_bh(&tn->node_list_lock);
+ list_for_each_entry_rcu(n, &tn->node_list, list) {
+ if (!n->peer_net)
+ continue;
+ if (n->peer_net != exit_net)
+ continue;
+ tipc_node_write_lock(n);
+ n->peer_net = NULL;
+ n->peer_hash_mix = 0;
+ tipc_node_write_unlock_fast(n);
+ break;
+ }
+ spin_unlock_bh(&tn->node_list_lock);
+ }
+ rcu_read_unlock();
+}
--
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