netns: make struct pernet_operations::id unsigned int

Make struct pernet_operations::id unsigned.

There are 2 reasons to do so:

1)
This field is really an index into an zero based array and
thus is unsigned entity. Using negative value is out-of-bound
access by definition.

2)
On x86_64 unsigned 32-bit data which are mixed with pointers
via array indexing or offsets added or subtracted to pointers
are preffered to signed 32-bit data.

"int" being used as an array index needs to be sign-extended
to 64-bit before being used.

void f(long *p, int i)
{
g(p[i]);
}

roughly translates to

movsx rsi, esi
mov rdi, [rsi+...]
call g

MOVSX is 3 byte instruction which isn't necessary if the variable is
unsigned because x86_64 is zero extending by default.

Now, there is net_generic() function which, you guessed it right, uses
"int" as an array index:

static inline void *net_generic(const struct net *net, int id)
{
...
ptr = ng->ptr[id - 1];
...
}

And this function is used a lot, so those sign extensions add up.

Patch snipes ~1730 bytes on allyesconfig kernel (without all junk
messing with code generation):

add/remove: 0/0 grow/shrink: 70/598 up/down: 396/-2126 (-1730)

Unfortunately some functions actually grow bigger.
This is a semmingly random artefact of code generation with register
allocator being used differently. gcc decides that some variable
needs to live in new r8+ registers and every access now requires REX
prefix. Or it is shifted into r12, so [r12+0] addressing mode has to be
used which is longer than [r8]

However, overall balance is in negative direction:

add/remove: 0/0 grow/shrink: 70/598 up/down: 396/-2126 (-1730)
function old new delta
nfsd4_lock 3886 3959 +73
tipc_link_build_proto_msg 1096 1140 +44
mac80211_hwsim_new_radio 2776 2808 +32
tipc_mon_rcv 1032 1058 +26
svcauth_gss_legacy_init 1413 1429 +16
tipc_bcbase_select_primary 379 392 +13
nfsd4_exchange_id 1247 1260 +13
nfsd4_setclientid_confirm 782 793 +11
...
put_client_renew_locked 494 480 -14
ip_set_sockfn_get 730 716 -14
geneve_sock_add 829 813 -16
nfsd4_sequence_done 721 703 -18
nlmclnt_lookup_host 708 686 -22
nfsd4_lockt 1085 1063 -22
nfs_get_client 1077 1050 -27
tcf_bpf_init 1106 1076 -30
nfsd4_encode_fattr 5997 5930 -67
Total: Before=154856051, After=154854321, chg -0.00%

Signed-off-by: Alexey Dobriyan <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/infiniband/core/cma.c

···
 static LIST_HEAD(listen_any_list);
 static DEFINE_MUTEX(lock);
 static struct workqueue_struct *cma_wq;
-static int cma_pernet_id;
+static unsigned int cma_pernet_id;
 
 struct cma_pernet {
 	struct idr tcp_ps;

drivers/net/bonding/bond_main.c

···
 atomic_t netpoll_block_tx = ATOMIC_INIT(0);
 #endif
 
-int bond_net_id __read_mostly;
+unsigned int bond_net_id __read_mostly;
 
 static __be32 arp_target[BOND_MAX_ARP_TARGETS];
 static int arp_ip_count;

drivers/net/geneve.c

···
 	struct list_head	sock_list;
 };
 
-static int geneve_net_id;
+static unsigned int geneve_net_id;
 
 union geneve_addr {
 	struct sockaddr_in sin;

drivers/net/gtp.c

···
 	struct hlist_head	*addr_hash;
 };
 
-static int gtp_net_id __read_mostly;
+static unsigned int gtp_net_id __read_mostly;
 
 struct gtp_net {
 	struct list_head gtp_dev_list;

drivers/net/ppp/ppp_generic.c

···
 static atomic_t channel_count = ATOMIC_INIT(0);
 
 /* per-net private data for this module */
-static int ppp_net_id __read_mostly;
+static unsigned int ppp_net_id __read_mostly;
 struct ppp_net {
 	/* units to ppp mapping */
 	struct idr units_idr;

drivers/net/ppp/pppoe.c

···
 static const struct ppp_channel_ops pppoe_chan_ops;
 
 /* per-net private data for this module */
-static int pppoe_net_id __read_mostly;
+static unsigned int pppoe_net_id __read_mostly;
 struct pppoe_net {
 	/*
 	 * we could use _single_ hash table for all

drivers/net/vxlan.c

···
 module_param(log_ecn_error, bool, 0644);
 MODULE_PARM_DESC(log_ecn_error, "Log packets received with corrupted ECN");
 
-static int vxlan_net_id;
+static unsigned int vxlan_net_id;
 static struct rtnl_link_ops vxlan_link_ops;
 
 static const u8 all_zeros_mac[ETH_ALEN + 2];

drivers/net/wireless/mac80211_hwsim.c

···
 	cp->magic = 0;
 }
 
-static int hwsim_net_id;
+static unsigned int hwsim_net_id;
 
 static int hwsim_netgroup;
 

fs/lockd/netns.h

···
 	struct list_head nsm_handles;
 };
 
-extern int lockd_net_id;
+extern unsigned int lockd_net_id;
 
 #endif

fs/lockd/svc.c

···
 static struct svc_rqst		*nlmsvc_rqst;
 unsigned long			nlmsvc_timeout;
 
-int lockd_net_id;
+unsigned int lockd_net_id;
 
 /*
  * These can be set at insmod time (useful for NFS as root filesystem),

fs/nfs/inode.c

···
 	destroy_workqueue(wq);
 }
 
-int nfs_net_id;
+unsigned int nfs_net_id;
 EXPORT_SYMBOL_GPL(nfs_net_id);
 
 static int nfs_net_init(struct net *net)

fs/nfs/netns.h

···
 #endif
 };
 
-extern int nfs_net_id;
+extern unsigned int nfs_net_id;
 
 #endif

fs/nfs_common/grace.c

···
 #include <net/netns/generic.h>
 #include <linux/fs.h>
 
-static int grace_net_id;
+static unsigned int grace_net_id;
 static DEFINE_SPINLOCK(grace_lock);
 
 /**

fs/nfsd/netns.h

···
 /* Simple check to find out if a given net was properly initialized */
 #define nfsd_netns_ready(nn) ((nn)->sessionid_hashtbl)
 
-extern int nfsd_net_id;
+extern unsigned int nfsd_net_id;
 #endif /* __NFSD_NETNS_H__ */

fs/nfsd/nfsctl.c

···
 }
 #endif
 
-int nfsd_net_id;
+unsigned int nfsd_net_id;
 
 static __net_init int nfsd_init_net(struct net *net)
 {

include/net/bonding.h

···
 }
 
 /* exported from bond_main.c */
-extern int bond_net_id;
+extern unsigned int bond_net_id;
 extern const struct bond_parm_tbl bond_lacp_tbl[];
 extern const struct bond_parm_tbl xmit_hashtype_tbl[];
 extern const struct bond_parm_tbl arp_validate_tbl[];

include/net/ip_tunnels.h

···
 #endif
 	struct ip_tunnel_prl_entry __rcu *prl;	/* potential router list */
 	unsigned int		prl_count;	/* # of entries in PRL */
-	int			ip_tnl_net_id;
+	unsigned int		ip_tnl_net_id;
 	struct gro_cells	gro_cells;
 	bool			collect_md;
 	bool			ignore_df;
···
 void  ip_tunnel_dellink(struct net_device *dev, struct list_head *head);
 struct net *ip_tunnel_get_link_net(const struct net_device *dev);
 int ip_tunnel_get_iflink(const struct net_device *dev);
-int ip_tunnel_init_net(struct net *net, int ip_tnl_net_id,
+int ip_tunnel_init_net(struct net *net, unsigned int ip_tnl_net_id,
 		       struct rtnl_link_ops *ops, char *devname);
 
 void ip_tunnel_delete_net(struct ip_tunnel_net *itn, struct rtnl_link_ops *ops);
···
 			 struct ip_tunnel_parm *p);
 int ip_tunnel_newlink(struct net_device *dev, struct nlattr *tb[],
 		      struct ip_tunnel_parm *p);
-void ip_tunnel_setup(struct net_device *dev, int net_id);
+void ip_tunnel_setup(struct net_device *dev, unsigned int net_id);
 
 struct ip_tunnel_encap_ops {
 	size_t (*encap_hlen)(struct ip_tunnel_encap *e);

include/net/net_namespace.h

···
 	int (*init)(struct net *net);
 	void (*exit)(struct net *net);
 	void (*exit_batch)(struct list_head *net_exit_list);
-	int *id;
+	unsigned int *id;
 	size_t size;
 };
 

include/net/netfilter/nf_conntrack_l4proto.h

···
 		const struct nla_policy *nla_policy;
 	} ctnl_timeout;
 #endif
-	int	*net_id;
+	unsigned int	*net_id;
 	/* Init l4proto pernet data */
 	int (*init_net)(struct net *net, u_int16_t proto);
 

include/net/netfilter/nf_conntrack_synproxy.h

···
 	struct synproxy_stats __percpu	*stats;
 };
 
-extern int synproxy_net_id;
+extern unsigned int synproxy_net_id;
 static inline struct synproxy_net *synproxy_pernet(struct net *net)
 {
 	return net_generic(net, synproxy_net_id);

include/net/netns/generic.h

···
 	void *ptr[0];
 };
 
-static inline void *net_generic(const struct net *net, int id)
+static inline void *net_generic(const struct net *net, unsigned int id)
 {
 	struct net_generic *ng;
 	void *ptr;

kernel/audit.c

···
 
 /* The netlink socket. */
 static struct sock *audit_sock;
-static int audit_net_id;
+static unsigned int audit_net_id;
 
 /* Hash for inode-based rules */
 struct list_head audit_inode_hash[AUDIT_INODE_BUCKETS];

net/8021q/vlan.c

···
 
 /* Global VLAN variables */
 
-int vlan_net_id __read_mostly;
+unsigned int vlan_net_id __read_mostly;
 
 const char vlan_fullname[] = "802.1Q VLAN Support";
 const char vlan_version[] = DRV_VERSION;

net/8021q/vlan.h

···
 
 extern struct rtnl_link_ops vlan_link_ops;
 
-extern int vlan_net_id;
+extern unsigned int vlan_net_id;
 
 struct proc_dir_entry;
 

net/bridge/br_netfilter_hooks.c

···
 #include <linux/sysctl.h>
 #endif
 
-static int brnf_net_id __read_mostly;
+static unsigned int brnf_net_id __read_mostly;
 
 struct brnf_net {
 	bool enabled;

net/caif/caif_dev.c

···
 	struct caif_device_entry_list caifdevs;
 };
 
-static int caif_net_id;
+static unsigned int caif_net_id;
 static int q_high = 50; /* Percent */
 
 struct cfcnfg *get_cfcnfg(struct net *net)

net/core/net_namespace.c

···
 	return ng;
 }
 
-static int net_assign_generic(struct net *net, int id, void *data)
+static int net_assign_generic(struct net *net, unsigned int id, void *data)
 {
 	struct net_generic *ng, *old_ng;
 
···
 static void ops_free(const struct pernet_operations *ops, struct net *net)
 {
 	if (ops->id && ops->size) {
-		int id = *ops->id;
-		kfree(net_generic(net, id));
+		kfree(net_generic(net, *ops->id));
 	}
 }
 
···
 			}
 			return error;
 		}
-		max_gen_ptrs = max_t(unsigned int, max_gen_ptrs, *ops->id);
+		max_gen_ptrs = max(max_gen_ptrs, *ops->id);
 	}
 	error = __register_pernet_operations(list, ops);
 	if (error) {

net/core/pktgen.c

···
 };
 
 
-static int pg_net_id __read_mostly;
+static unsigned int pg_net_id __read_mostly;
 
 struct pktgen_net {
 	struct net		*net;

net/ipv4/ip_gre.c

···
 static struct rtnl_link_ops ipgre_link_ops __read_mostly;
 static int ipgre_tunnel_init(struct net_device *dev);
 
-static int ipgre_net_id __read_mostly;
-static int gre_tap_net_id __read_mostly;
+static unsigned int ipgre_net_id __read_mostly;
+static unsigned int gre_tap_net_id __read_mostly;
 
 static void ipgre_err(struct sk_buff *skb, u32 info,
 		      const struct tnl_ptk_info *tpi)

net/ipv4/ip_tunnel.c

···
 }
 EXPORT_SYMBOL(ip_tunnel_get_iflink);
 
-int ip_tunnel_init_net(struct net *net, int ip_tnl_net_id,
+int ip_tunnel_init_net(struct net *net, unsigned int ip_tnl_net_id,
 				  struct rtnl_link_ops *ops, char *devname)
 {
 	struct ip_tunnel_net *itn = net_generic(net, ip_tnl_net_id);
···
 EXPORT_SYMBOL_GPL(ip_tunnel_uninit);
 
 /* Do least required initialization, rest of init is done in tunnel_init call */
-void ip_tunnel_setup(struct net_device *dev, int net_id)
+void ip_tunnel_setup(struct net_device *dev, unsigned int net_id)
 {
 	struct ip_tunnel *tunnel = netdev_priv(dev);
 	tunnel->ip_tnl_net_id = net_id;

net/ipv4/ip_vti.c

···
 
 static struct rtnl_link_ops vti_link_ops __read_mostly;
 
-static int vti_net_id __read_mostly;
+static unsigned int vti_net_id __read_mostly;
 static int vti_tunnel_init(struct net_device *dev);
 
 static int vti_input(struct sk_buff *skb, int nexthdr, __be32 spi,

net/ipv4/ipip.c

···
 module_param(log_ecn_error, bool, 0644);
 MODULE_PARM_DESC(log_ecn_error, "Log packets received with corrupted ECN");
 
-static int ipip_net_id __read_mostly;
+static unsigned int ipip_net_id __read_mostly;
 
 static int ipip_tunnel_init(struct net_device *dev);
 static struct rtnl_link_ops ipip_link_ops __read_mostly;

net/ipv4/netfilter/ipt_CLUSTERIP.c

···
 static const struct file_operations clusterip_proc_fops;
 #endif
 
-static int clusterip_net_id __read_mostly;
+static unsigned int clusterip_net_id __read_mostly;
 
 struct clusterip_net {
 	struct list_head configs;

net/ipv6/ip6_gre.c

···
 #define IP6_GRE_HASH_SIZE_SHIFT  5
 #define IP6_GRE_HASH_SIZE (1 << IP6_GRE_HASH_SIZE_SHIFT)
 
-static int ip6gre_net_id __read_mostly;
+static unsigned int ip6gre_net_id __read_mostly;
 struct ip6gre_net {
 	struct ip6_tnl __rcu *tunnels[4][IP6_GRE_HASH_SIZE];
 

net/ipv6/ip6_tunnel.c

···
 static void ip6_tnl_dev_setup(struct net_device *dev);
 static struct rtnl_link_ops ip6_link_ops __read_mostly;
 
-static int ip6_tnl_net_id __read_mostly;
+static unsigned int ip6_tnl_net_id __read_mostly;
 struct ip6_tnl_net {
 	/* the IPv6 tunnel fallback device */
 	struct net_device *fb_tnl_dev;

net/ipv6/ip6_vti.c

···
 static void vti6_dev_setup(struct net_device *dev);
 static struct rtnl_link_ops vti6_link_ops __read_mostly;
 
-static int vti6_net_id __read_mostly;
+static unsigned int vti6_net_id __read_mostly;
 struct vti6_net {
 	/* the vti6 tunnel fallback device */
 	struct net_device *fb_tnl_dev;

net/ipv6/sit.c

···
 		      __be32 *v4dst);
 static struct rtnl_link_ops sit_link_ops __read_mostly;
 
-static int sit_net_id __read_mostly;
+static unsigned int sit_net_id __read_mostly;
 struct sit_net {
 	struct ip_tunnel __rcu *tunnels_r_l[IP6_SIT_HASH_SIZE];
 	struct ip_tunnel __rcu *tunnels_r[IP6_SIT_HASH_SIZE];

net/ipv6/xfrm6_tunnel.c

···
 	u32 spi;
 };
 
-static int xfrm6_tunnel_net_id __read_mostly;
+static unsigned int xfrm6_tunnel_net_id __read_mostly;
 static inline struct xfrm6_tunnel_net *xfrm6_tunnel_pernet(struct net *net)
 {
 	return net_generic(net, xfrm6_tunnel_net_id);

net/key/af_key.c

···
 #define _X2KEY(x) ((x) == XFRM_INF ? 0 : (x))
 #define _KEY2X(x) ((x) == 0 ? XFRM_INF : (x))
 
-static int pfkey_net_id __read_mostly;
+static unsigned int pfkey_net_id __read_mostly;
 struct netns_pfkey {
 	/* List of all pfkey sockets. */
 	struct hlist_head table;

net/netfilter/ipset/ip_set_core.c

···
 	bool		is_destroyed;	/* all sets are destroyed */
 };
 
-static int ip_set_net_id __read_mostly;
+static unsigned int ip_set_net_id __read_mostly;
 
 static inline struct ip_set_net *ip_set_pernet(struct net *net)
 {

net/netfilter/ipvs/ip_vs_core.c

···
 #endif
 EXPORT_SYMBOL(ip_vs_new_conn_out);
 
-static int ip_vs_net_id __read_mostly;
+static unsigned int ip_vs_net_id __read_mostly;
 /* netns cnt used for uniqueness */
 static atomic_t ipvs_netns_cnt = ATOMIC_INIT(0);
 

net/netfilter/nf_conntrack_proto_dccp.c

···
 };
 
 /* this module per-net specifics */
-static int dccp_net_id __read_mostly;
+static unsigned int dccp_net_id __read_mostly;
 struct dccp_net {
 	struct nf_proto_net pn;
 	int dccp_loose;

net/netfilter/nf_conntrack_proto_gre.c

···
 	[GRE_CT_REPLIED]	= 180*HZ,
 };
 
-static int proto_gre_net_id __read_mostly;
+static unsigned int proto_gre_net_id __read_mostly;
 struct netns_proto_gre {
 	struct nf_proto_net	nf;
 	rwlock_t		keymap_lock;

net/netfilter/nf_conntrack_proto_sctp.c

···
 	}
 };
 
-static int sctp_net_id	__read_mostly;
+static unsigned int sctp_net_id	__read_mostly;
 struct sctp_net {
 	struct nf_proto_net pn;
 	unsigned int timeouts[SCTP_CONNTRACK_MAX];

net/netfilter/nf_conntrack_proto_udplite.c

···
 	[UDPLITE_CT_REPLIED]	= 180*HZ,
 };
 
-static int udplite_net_id __read_mostly;
+static unsigned int udplite_net_id __read_mostly;
 struct udplite_net {
 	struct nf_proto_net pn;
 	unsigned int timeouts[UDPLITE_CT_MAX];

net/netfilter/nf_synproxy_core.c

···
 #include <net/netfilter/nf_conntrack_synproxy.h>
 #include <net/netfilter/nf_conntrack_zones.h>
 
-int synproxy_net_id;
+unsigned int synproxy_net_id;
 EXPORT_SYMBOL_GPL(synproxy_net_id);
 
 bool

net/netfilter/nfnetlink_log.c

···
 
 #define INSTANCE_BUCKETS	16
 
-static int nfnl_log_net_id __read_mostly;
+static unsigned int nfnl_log_net_id __read_mostly;
 
 struct nfnl_log_net {
 	spinlock_t instances_lock;

net/netfilter/nfnetlink_queue.c

···
 
 typedef int (*nfqnl_cmpfn)(struct nf_queue_entry *, unsigned long);
 
-static int nfnl_queue_net_id __read_mostly;
+static unsigned int nfnl_queue_net_id __read_mostly;
 
 #define INSTANCE_BUCKETS	16
 struct nfnl_queue_net {

net/netfilter/xt_hashlimit.c

···
 	struct proc_dir_entry	*ip6t_hashlimit;
 };
 
-static int hashlimit_net_id;
+static unsigned int hashlimit_net_id;
 static inline struct hashlimit_net *hashlimit_pernet(struct net *net)
 {
 	return net_generic(net, hashlimit_net_id);

net/netfilter/xt_recent.c

···
 #endif
 };
 
-static int recent_net_id __read_mostly;
+static unsigned int recent_net_id __read_mostly;
 
 static inline struct recent_net *recent_pernet(struct net *net)
 {

net/openvswitch/datapath.c

···
 #include "vport-internal_dev.h"
 #include "vport-netdev.h"
 
-int ovs_net_id __read_mostly;
+unsigned int ovs_net_id __read_mostly;
 
 static struct genl_family dp_packet_genl_family;
 static struct genl_family dp_flow_genl_family;

net/openvswitch/datapath.h

···
 	bool xt_label;
 };
 
-extern int ovs_net_id;
+extern unsigned int ovs_net_id;
 void ovs_lock(void);
 void ovs_unlock(void);
 

net/phonet/pn_dev.c

···
 	struct phonet_routes routes;
 };
 
-static int phonet_net_id __read_mostly;
+static unsigned int phonet_net_id __read_mostly;
 
 static struct phonet_net *phonet_pernet(struct net *net)
 {

net/rds/tcp.c

···
 	.t_mp_capable		= 1,
 };
 
-static int rds_tcp_netid;
+static unsigned int rds_tcp_netid;
 
 /* per-network namespace private data for this module */
 struct rds_tcp_net {

net/sched/act_bpf.c

···
 	bool is_ebpf;
 };
 
-static int bpf_net_id;
+static unsigned int bpf_net_id;
 static struct tc_action_ops act_bpf_ops;
 
 static int tcf_bpf(struct sk_buff *skb, const struct tc_action *act,

net/sched/act_connmark.c

···
 
 #define CONNMARK_TAB_MASK     3
 
-static int connmark_net_id;
+static unsigned int connmark_net_id;
 static struct tc_action_ops act_connmark_ops;
 
 static int tcf_connmark(struct sk_buff *skb, const struct tc_action *a,

net/sched/act_csum.c

···
 	[TCA_CSUM_PARMS] = { .len = sizeof(struct tc_csum), },
 };
 
-static int csum_net_id;
+static unsigned int csum_net_id;
 static struct tc_action_ops act_csum_ops;
 
 static int tcf_csum_init(struct net *net, struct nlattr *nla,

net/sched/act_gact.c

···
 
 #define GACT_TAB_MASK	15
 
-static int gact_net_id;
+static unsigned int gact_net_id;
 static struct tc_action_ops act_gact_ops;
 
 #ifdef CONFIG_GACT_PROB

net/sched/act_ife.c

···
 
 #define IFE_TAB_MASK 15
 
-static int ife_net_id;
+static unsigned int ife_net_id;
 static int max_metacnt = IFE_META_MAX + 1;
 static struct tc_action_ops act_ife_ops;
 

net/sched/act_ipt.c

···
 
 #define IPT_TAB_MASK     15
 
-static int ipt_net_id;
+static unsigned int ipt_net_id;
 static struct tc_action_ops act_ipt_ops;
 
-static int xt_net_id;
+static unsigned int xt_net_id;
 static struct tc_action_ops act_xt_ops;
 
 static int ipt_init_target(struct xt_entry_target *t, char *table,

net/sched/act_mirred.c

···
 	[TCA_MIRRED_PARMS]	= { .len = sizeof(struct tc_mirred) },
 };
 
-static int mirred_net_id;
+static unsigned int mirred_net_id;
 static struct tc_action_ops act_mirred_ops;
 
 static bool dev_is_mac_header_xmit(const struct net_device *dev)

net/sched/act_nat.c

···
 
 #define NAT_TAB_MASK	15
 
-static int nat_net_id;
+static unsigned int nat_net_id;
 static struct tc_action_ops act_nat_ops;
 
 static const struct nla_policy nat_policy[TCA_NAT_MAX + 1] = {

net/sched/act_pedit.c

···
 
 #define PEDIT_TAB_MASK	15
 
-static int pedit_net_id;
+static unsigned int pedit_net_id;
 static struct tc_action_ops act_pedit_ops;
 
 static const struct nla_policy pedit_policy[TCA_PEDIT_MAX + 1] = {

net/sched/act_police.c

···
 
 /* Each policer is serialized by its individual spinlock */
 
-static int police_net_id;
+static unsigned int police_net_id;
 static struct tc_action_ops act_police_ops;
 
 static int tcf_act_police_walker(struct net *net, struct sk_buff *skb,

net/sched/act_simple.c

···
 
 #define SIMP_TAB_MASK     7
 
-static int simp_net_id;
+static unsigned int simp_net_id;
 static struct tc_action_ops act_simp_ops;
 
 #define SIMP_MAX_DATA	32

net/sched/act_skbedit.c

···
 
 #define SKBEDIT_TAB_MASK     15
 
-static int skbedit_net_id;
+static unsigned int skbedit_net_id;
 static struct tc_action_ops act_skbedit_ops;
 
 static int tcf_skbedit(struct sk_buff *skb, const struct tc_action *a,

net/sched/act_skbmod.c

···
 
 #define SKBMOD_TAB_MASK     15
 
-static int skbmod_net_id;
+static unsigned int skbmod_net_id;
 static struct tc_action_ops act_skbmod_ops;
 
 #define MAX_EDIT_LEN ETH_HLEN

net/sched/act_tunnel_key.c

···
 
 #define TUNNEL_KEY_TAB_MASK     15
 
-static int tunnel_key_net_id;
+static unsigned int tunnel_key_net_id;
 static struct tc_action_ops act_tunnel_key_ops;
 
 static int tunnel_key_act(struct sk_buff *skb, const struct tc_action *a,

net/sched/act_vlan.c

···
 
 #define VLAN_TAB_MASK     15
 
-static int vlan_net_id;
+static unsigned int vlan_net_id;
 static struct tc_action_ops act_vlan_ops;
 
 static int tcf_vlan(struct sk_buff *skb, const struct tc_action *a,

net/sunrpc/netns.h

···
 	struct proc_dir_entry *use_gssp_proc;
 };
 
-extern int sunrpc_net_id;
+extern unsigned int sunrpc_net_id;
 
 int ip_map_cache_create(struct net *);
 void ip_map_cache_destroy(struct net *);

net/sunrpc/sunrpc_syms.c

···
 
 #include "netns.h"
 
-int sunrpc_net_id;
+unsigned int sunrpc_net_id;
 EXPORT_SYMBOL_GPL(sunrpc_net_id);
 
 static __net_init int sunrpc_init_net(struct net *net)

net/tipc/core.c

···
 #include <linux/module.h>
 
 /* configurable TIPC parameters */
-int tipc_net_id __read_mostly;
+unsigned int tipc_net_id __read_mostly;
 int sysctl_tipc_rmem[3] __read_mostly;	/* min/default/max */
 
 static int __net_init tipc_init_net(struct net *net)

net/tipc/core.h

···
 #define MAX_BEARERS	         3
 #define TIPC_DEF_MON_THRESHOLD  32
 
-extern int tipc_net_id __read_mostly;
+extern unsigned int tipc_net_id __read_mostly;
 extern int sysctl_tipc_rmem[3] __read_mostly;
 extern int sysctl_tipc_named_timeout __read_mostly;