From 23fd3eace088ab1872ee59c19191a119ec779ac9 Mon Sep 17 00:00:00 2001 From: Jon Maloy Date: Thu, 22 Mar 2018 20:42:49 +0100 Subject: [PATCH] tipc: remove direct accesses to own_addr field in struct tipc_net As a preparation to changing the addressing structure of TIPC we replace all direct accesses to the tipc_net::own_addr field with the function dedicated for this, tipc_own_addr(). There are no changes to program logics in this commit. Acked-by: Ying Xue Signed-off-by: Jon Maloy Signed-off-by: David S. Miller --- net/tipc/addr.c | 6 +++--- net/tipc/addr.h | 2 +- net/tipc/discover.c | 3 ++- net/tipc/link.c | 9 ++++----- net/tipc/name_distr.c | 11 ++++++----- net/tipc/name_table.c | 6 +++--- net/tipc/net.c | 31 +++++++++++++------------------ net/tipc/socket.c | 23 ++++++++++------------- 8 files changed, 42 insertions(+), 49 deletions(-) diff --git a/net/tipc/addr.c b/net/tipc/addr.c index 19987994704f..6e06b4d981f1 100644 --- a/net/tipc/addr.c +++ b/net/tipc/addr.c @@ -43,9 +43,7 @@ */ int in_own_node(struct net *net, u32 addr) { - struct tipc_net *tn = net_generic(net, tipc_net_id); - - return (addr == tn->own_addr) || !addr; + return addr == tipc_own_addr(net) || !addr; } bool tipc_in_scope(bool legacy_format, u32 domain, u32 addr) @@ -56,6 +54,8 @@ bool tipc_in_scope(bool legacy_format, u32 domain, u32 addr) return false; if (domain == tipc_cluster_mask(addr)) /* domain */ return true; + if (domain == (addr & TIPC_ZONE_CLUSTER_MASK)) /* domain */ + return true; if (domain == (addr & TIPC_ZONE_MASK)) /* domain */ return true; return false; diff --git a/net/tipc/addr.h b/net/tipc/addr.h index 97bdc0e1a369..6b48f0dc0205 100644 --- a/net/tipc/addr.h +++ b/net/tipc/addr.h @@ -45,7 +45,7 @@ static inline u32 tipc_own_addr(struct net *net) { - struct tipc_net *tn = net_generic(net, tipc_net_id); + struct tipc_net *tn = tipc_net(net); return tn->own_addr; } diff --git a/net/tipc/discover.c b/net/tipc/discover.c index 82556e19222d..94d524018ca5 100644 --- a/net/tipc/discover.c +++ b/net/tipc/discover.c @@ -81,11 +81,12 @@ static void tipc_disc_init_msg(struct net *net, struct sk_buff *skb, u32 mtyp, struct tipc_bearer *b) { struct tipc_net *tn = tipc_net(net); + u32 self = tipc_own_addr(net); u32 dest_domain = b->domain; struct tipc_msg *hdr; hdr = buf_msg(skb); - tipc_msg_init(tn->own_addr, hdr, LINK_CONFIG, mtyp, + tipc_msg_init(self, hdr, LINK_CONFIG, mtyp, MAX_H_SIZE, dest_domain); msg_set_non_seq(hdr, 1); msg_set_node_sig(hdr, tn->random); diff --git a/net/tipc/link.c b/net/tipc/link.c index 86fde005ea47..4aa56e3bf4fc 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -1936,11 +1936,11 @@ static int __tipc_nl_add_stats(struct sk_buff *skb, struct tipc_stats *s) int __tipc_nl_add_link(struct net *net, struct tipc_nl_msg *msg, struct tipc_link *link, int nlflags) { - int err; - void *hdr; + u32 self = tipc_own_addr(net); struct nlattr *attrs; struct nlattr *prop; - struct tipc_net *tn = net_generic(net, tipc_net_id); + void *hdr; + int err; hdr = genlmsg_put(msg->skb, msg->portid, msg->seq, &tipc_genl_family, nlflags, TIPC_NL_LINK_GET); @@ -1953,8 +1953,7 @@ int __tipc_nl_add_link(struct net *net, struct tipc_nl_msg *msg, if (nla_put_string(msg->skb, TIPC_NLA_LINK_NAME, link->name)) goto attr_msg_full; - if (nla_put_u32(msg->skb, TIPC_NLA_LINK_DEST, - tipc_cluster_mask(tn->own_addr))) + if (nla_put_u32(msg->skb, TIPC_NLA_LINK_DEST, tipc_cluster_mask(self))) goto attr_msg_full; if (nla_put_u32(msg->skb, TIPC_NLA_LINK_MTU, link->mtu)) goto attr_msg_full; diff --git a/net/tipc/name_distr.c b/net/tipc/name_distr.c index 28d095a7d8bb..7e571f4f47bc 100644 --- a/net/tipc/name_distr.c +++ b/net/tipc/name_distr.c @@ -68,14 +68,14 @@ static void publ_to_item(struct distr_item *i, struct publication *p) static struct sk_buff *named_prepare_buf(struct net *net, u32 type, u32 size, u32 dest) { - struct tipc_net *tn = net_generic(net, tipc_net_id); struct sk_buff *buf = tipc_buf_acquire(INT_H_SIZE + size, GFP_ATOMIC); + u32 self = tipc_own_addr(net); struct tipc_msg *msg; if (buf != NULL) { msg = buf_msg(buf); - tipc_msg_init(tn->own_addr, msg, NAME_DISTRIBUTOR, type, - INT_H_SIZE, dest); + tipc_msg_init(self, msg, NAME_DISTRIBUTOR, + type, INT_H_SIZE, dest); msg_set_size(msg, INT_H_SIZE + size); } return buf; @@ -382,13 +382,14 @@ void tipc_named_reinit(struct net *net) struct name_table *nt = tipc_name_table(net); struct tipc_net *tn = tipc_net(net); struct publication *publ; + u32 self = tipc_own_addr(net); spin_lock_bh(&tn->nametbl_lock); list_for_each_entry_rcu(publ, &nt->node_scope, binding_node) - publ->node = tn->own_addr; + publ->node = self; list_for_each_entry_rcu(publ, &nt->cluster_scope, binding_node) - publ->node = tn->own_addr; + publ->node = self; spin_unlock_bh(&tn->nametbl_lock); } diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c index 7478acb39096..4359605b1bec 100644 --- a/net/tipc/name_table.c +++ b/net/tipc/name_table.c @@ -540,7 +540,7 @@ u32 tipc_nametbl_translate(struct net *net, u32 type, u32 instance, } /* Round-Robin Algorithm */ - else if (*destnode == tn->own_addr) { + else if (*destnode == tipc_own_addr(net)) { if (list_empty(&info->local_publ)) goto no_match; publ = list_first_entry(&info->local_publ, struct publication, @@ -713,7 +713,7 @@ struct publication *tipc_nametbl_publish(struct net *net, u32 type, u32 lower, } publ = tipc_nametbl_insert_publ(net, type, lower, upper, scope, - tn->own_addr, port_ref, key); + tipc_own_addr(net), port_ref, key); if (likely(publ)) { tn->nametbl->local_publ_count++; buf = tipc_named_publish(net, publ); @@ -738,7 +738,7 @@ int tipc_nametbl_withdraw(struct net *net, u32 type, u32 lower, u32 port, struct tipc_net *tn = net_generic(net, tipc_net_id); spin_lock_bh(&tn->nametbl_lock); - publ = tipc_nametbl_remove_publ(net, type, lower, tn->own_addr, + publ = tipc_nametbl_remove_publ(net, type, lower, tipc_own_addr(net), port, key); if (likely(publ)) { tn->nametbl->local_publ_count--; diff --git a/net/tipc/net.c b/net/tipc/net.c index eb0d7a352e3f..7f140a5308ee 100644 --- a/net/tipc/net.c +++ b/net/tipc/net.c @@ -106,7 +106,7 @@ int tipc_net_start(struct net *net, u32 addr) { - struct tipc_net *tn = net_generic(net, tipc_net_id); + struct tipc_net *tn = tipc_net(net); char addr_string[16]; tn->own_addr = addr; @@ -117,25 +117,24 @@ int tipc_net_start(struct net *net, u32 addr) tipc_named_reinit(net); tipc_sk_reinit(net); - tipc_nametbl_publish(net, TIPC_CFG_SRV, tn->own_addr, tn->own_addr, - TIPC_CLUSTER_SCOPE, 0, tn->own_addr); + tipc_nametbl_publish(net, TIPC_CFG_SRV, addr, addr, + TIPC_CLUSTER_SCOPE, 0, addr); pr_info("Started in network mode\n"); pr_info("Own node address %s, cluster identity %u\n", - tipc_addr_string_fill(addr_string, tn->own_addr), + tipc_addr_string_fill(addr_string, addr), tn->net_id); return 0; } void tipc_net_stop(struct net *net) { - struct tipc_net *tn = net_generic(net, tipc_net_id); + u32 self = tipc_own_addr(net); - if (!tn->own_addr) + if (!self) return; - tipc_nametbl_withdraw(net, TIPC_CFG_SRV, tn->own_addr, 0, - tn->own_addr); + tipc_nametbl_withdraw(net, TIPC_CFG_SRV, self, 0, self); rtnl_lock(); tipc_bearer_stop(net); tipc_node_stop(net); @@ -202,9 +201,9 @@ int tipc_nl_net_dump(struct sk_buff *skb, struct netlink_callback *cb) int __tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info) { - 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 net *net = sock_net(skb->sk); + struct tipc_net *tn = tipc_net(net); int err; if (!info->attrs[TIPC_NLA_NET]) @@ -216,13 +215,13 @@ int __tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info) if (err) return err; + /* Can't change net id once TIPC has joined a network */ + if (tipc_own_addr(net)) + return -EPERM; + if (attrs[TIPC_NLA_NET_ID]) { u32 val; - /* Can't change net id once TIPC has joined a network */ - if (tn->own_addr) - return -EPERM; - val = nla_get_u32(attrs[TIPC_NLA_NET_ID]); if (val < 1 || val > 9999) return -EINVAL; @@ -233,10 +232,6 @@ int __tipc_nl_net_set(struct sk_buff *skb, struct genl_info *info) if (attrs[TIPC_NLA_NET_ADDR]) { u32 addr; - /* Can't change net addr once TIPC has joined a network */ - if (tn->own_addr) - return -EPERM; - addr = nla_get_u32(attrs[TIPC_NLA_NET_ADDR]); if (!addr) return -EINVAL; diff --git a/net/tipc/socket.c b/net/tipc/socket.c index 732ec894f69f..275b666f6231 100644 --- a/net/tipc/socket.c +++ b/net/tipc/socket.c @@ -289,10 +289,9 @@ static bool tipc_sk_type_connectionless(struct sock *sk) static bool tsk_peer_msg(struct tipc_sock *tsk, struct tipc_msg *msg) { struct sock *sk = &tsk->sk; - struct tipc_net *tn = net_generic(sock_net(sk), tipc_net_id); + u32 self = tipc_own_addr(sock_net(sk)); u32 peer_port = tsk_peer_port(tsk); - u32 orig_node; - u32 peer_node; + u32 orig_node, peer_node; if (unlikely(!tipc_sk_connected(sk))) return false; @@ -306,10 +305,10 @@ static bool tsk_peer_msg(struct tipc_sock *tsk, struct tipc_msg *msg) if (likely(orig_node == peer_node)) return true; - if (!orig_node && (peer_node == tn->own_addr)) + if (!orig_node && peer_node == self) return true; - if (!peer_node && (orig_node == tn->own_addr)) + if (!peer_node && orig_node == self) return true; return false; @@ -461,8 +460,8 @@ static int tipc_sk_create(struct net *net, struct socket *sock, /* Ensure tsk is visible before we read own_addr. */ smp_mb(); - tipc_msg_init(tn->own_addr, msg, TIPC_LOW_IMPORTANCE, TIPC_NAMED_MSG, - NAMED_H_SIZE, 0); + tipc_msg_init(tipc_own_addr(net), msg, TIPC_LOW_IMPORTANCE, + TIPC_NAMED_MSG, NAMED_H_SIZE, 0); msg_set_origport(msg, tsk->portid); timer_setup(&sk->sk_timer, tipc_sk_timeout, 0); @@ -671,7 +670,6 @@ static int tipc_getname(struct socket *sock, struct sockaddr *uaddr, struct sockaddr_tipc *addr = (struct sockaddr_tipc *)uaddr; struct sock *sk = sock->sk; struct tipc_sock *tsk = tipc_sk(sk); - struct tipc_net *tn = net_generic(sock_net(sock->sk), tipc_net_id); memset(addr, 0, sizeof(*addr)); if (peer) { @@ -682,7 +680,7 @@ static int tipc_getname(struct socket *sock, struct sockaddr *uaddr, addr->addr.id.node = tsk_peer_node(tsk); } else { addr->addr.id.ref = tsk->portid; - addr->addr.id.node = tn->own_addr; + addr->addr.id.node = tipc_own_addr(sock_net(sk)); } addr->addrtype = TIPC_ADDR_ID; @@ -2667,8 +2665,8 @@ void tipc_sk_reinit(struct net *net) while ((tsk = rhashtable_walk_next(&iter)) && !IS_ERR(tsk)) { spin_lock_bh(&tsk->sk.sk_lock.slock); msg = &tsk->phdr; - msg_set_prevnode(msg, tn->own_addr); - msg_set_orignode(msg, tn->own_addr); + msg_set_prevnode(msg, tipc_own_addr(net)); + msg_set_orignode(msg, tipc_own_addr(net)); spin_unlock_bh(&tsk->sk.sk_lock.slock); } @@ -3167,11 +3165,10 @@ static int __tipc_nl_add_sk_info(struct sk_buff *skb, struct tipc_sock *tsk) { struct net *net = sock_net(skb->sk); - struct tipc_net *tn = tipc_net(net); struct sock *sk = &tsk->sk; if (nla_put_u32(skb, TIPC_NLA_SOCK_REF, tsk->portid) || - nla_put_u32(skb, TIPC_NLA_SOCK_ADDR, tn->own_addr)) + nla_put_u32(skb, TIPC_NLA_SOCK_ADDR, tipc_own_addr(net))) return -EMSGSIZE; if (tipc_sk_connected(sk)) { -- 2.45.2