net: convert usage of packet_type to read_mostly

Protocols that use packet_type can be __read_mostly section for better
locality. Elminate any unnecessary initializations of NULL.

Signed-off-by: Stephen Hemminger <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

drivers/block/aoe/aoenet.c

···
 	return 0;
 }
 
-static struct packet_type aoe_pt = {
+static struct packet_type aoe_pt __read_mostly = {
 	.type = __constant_htons(ETH_P_AOE),
 	.func = aoenet_rcv,
 };

drivers/net/hamradio/bpqether.c

···
 static int bpq_rcv(struct sk_buff *, struct net_device *, struct packet_type *, struct net_device *);
 static int bpq_device_event(struct notifier_block *, unsigned long, void *);
 
-static struct packet_type bpq_packet_type = {
+static struct packet_type bpq_packet_type __read_mostly = {
 	.type	= cpu_to_be16(ETH_P_BPQ),
 	.func	= bpq_rcv,
 };

drivers/net/pppoe.c

···
 	return NET_RX_SUCCESS; /* Lies... :-) */
 }
 
-static struct packet_type pppoes_ptype = {
+static struct packet_type pppoes_ptype __read_mostly = {
 	.type	= cpu_to_be16(ETH_P_PPP_SES),
 	.func	= pppoe_rcv,
 };
 
-static struct packet_type pppoed_ptype = {
+static struct packet_type pppoed_ptype __read_mostly = {
 	.type	= cpu_to_be16(ETH_P_PPP_DISC),
 	.func	= pppoe_disc_rcv,
 };
 
-static struct proto pppoe_sk_proto = {
+static struct proto pppoe_sk_proto __read_mostly = {
 	.name	  = "PPPOE",
 	.owner	  = THIS_MODULE,
 	.obj_size = sizeof(struct pppox_sock),

drivers/net/wan/hdlc.c

···
 EXPORT_SYMBOL(attach_hdlc_protocol);
 EXPORT_SYMBOL(detach_hdlc_protocol);
 
-static struct packet_type hdlc_packet_type = {
+static struct packet_type hdlc_packet_type __read_mostly = {
 	.type = cpu_to_be16(ETH_P_HDLC),
 	.func = hdlc_rcv,
 };

drivers/net/wan/lapbether.c

···
 
 /* ------------------------------------------------------------------------ */
 
-static struct packet_type lapbeth_packet_type = {
+static struct packet_type lapbeth_packet_type __read_mostly = {
 	.type = cpu_to_be16(ETH_P_DEC),
 	.func = lapbeth_rcv,
 };

net/8021q/vlan.c

···
 static const char vlan_copyright[] = "Ben Greear <[e-mail]>";
 static const char vlan_buggyright[] = "David S. Miller <[e-mail]>";
 
-static struct packet_type vlan_packet_type = {
+static struct packet_type vlan_packet_type __read_mostly = {
 	.type = cpu_to_be16(ETH_P_8021Q),
 	.func = vlan_skb_recv, /* VLAN receive method */
 };

net/appletalk/ddp.c

···
 	.notifier_call	= ddp_device_event,
 };
 
-static struct packet_type ltalk_packet_type = {
+static struct packet_type ltalk_packet_type __read_mostly = {
 	.type		= cpu_to_be16(ETH_P_LOCALTALK),
 	.func		= ltalk_rcv,
 };
 
-static struct packet_type ppptalk_packet_type = {
+static struct packet_type ppptalk_packet_type __read_mostly = {
 	.type		= cpu_to_be16(ETH_P_PPPTALK),
 	.func		= atalk_rcv,
 };

net/ax25/af_ax25.c

···
 /*
  *	Called by socket.c on kernel start up
  */
-static struct packet_type ax25_packet_type = {
+static struct packet_type ax25_packet_type __read_mostly = {
 	.type	=	cpu_to_be16(ETH_P_AX25),
-	.dev	=	NULL,				/* All devices */
 	.func	=	ax25_kiss_rcv,
 };
 

net/decnet/af_decnet.c

···
 
 extern int dn_route_rcv(struct sk_buff *, struct net_device *, struct packet_type *, struct net_device *);
 
-static struct packet_type dn_dix_packet_type = {
+static struct packet_type dn_dix_packet_type __read_mostly = {
 	.type =		cpu_to_be16(ETH_P_DNA_RT),
-	.dev =		NULL,		/* All devices */
 	.func =		dn_route_rcv,
 };
 

net/dsa/tag_dsa.c

···
 	return 0;
 }
 
-static struct packet_type dsa_packet_type = {
+static struct packet_type dsa_packet_type __read_mostly = {
 	.type	= cpu_to_be16(ETH_P_DSA),
 	.func	= dsa_rcv,
 };

net/dsa/tag_edsa.c

···
 	return 0;
 }
 
-static struct packet_type edsa_packet_type = {
+static struct packet_type edsa_packet_type __read_mostly = {
 	.type	= cpu_to_be16(ETH_P_EDSA),
 	.func	= edsa_rcv,
 };

net/dsa/tag_trailer.c

···
 	return 0;
 }
 
-static struct packet_type trailer_packet_type = {
+static struct packet_type trailer_packet_type __read_mostly = {
 	.type	= cpu_to_be16(ETH_P_TRAILER),
 	.func	= trailer_rcv,
 };

net/econet/af_econet.c

···
 	return NET_RX_DROP;
 }
 
-static struct packet_type econet_packet_type = {
+static struct packet_type econet_packet_type __read_mostly = {
 	.type =		cpu_to_be16(ETH_P_ECONET),
 	.func =		econet_rcv,
 };

net/ipv4/af_inet.c

···
  *	IP protocol layer initialiser
  */
 
-static struct packet_type ip_packet_type = {
+static struct packet_type ip_packet_type __read_mostly = {
 	.type = cpu_to_be16(ETH_P_IP),
 	.func = ip_rcv,
 	.gso_send_check = inet_gso_send_check,

net/ipv4/arp.c

···
  *	Called once on startup.
  */
 
-static struct packet_type arp_packet_type = {
+static struct packet_type arp_packet_type __read_mostly = {
 	.type =	cpu_to_be16(ETH_P_ARP),
 	.func =	arp_rcv,
 };

net/ipv6/af_inet6.c

···
 	return err;
 }
 
-static struct packet_type ipv6_packet_type = {
+static struct packet_type ipv6_packet_type __read_mostly = {
 	.type = cpu_to_be16(ETH_P_IPV6),
 	.func = ipv6_rcv,
 	.gso_send_check = ipv6_gso_send_check,

net/ipx/af_ipx.c

···
 
 SOCKOPS_WRAP(ipx_dgram, PF_IPX);
 
-static struct packet_type ipx_8023_packet_type = {
+static struct packet_type ipx_8023_packet_type __read_mostly = {
 	.type		= cpu_to_be16(ETH_P_802_3),
 	.func		= ipx_rcv,
 };
 
-static struct packet_type ipx_dix_packet_type = {
+static struct packet_type ipx_dix_packet_type __read_mostly = {
 	.type		= cpu_to_be16(ETH_P_IPX),
 	.func		= ipx_rcv,
 };

net/irda/irmod.c

···
 /* Packet type handler.
  * Tell the kernel how IrDA packets should be handled.
  */
-static struct packet_type irda_packet_type = {
+static struct packet_type irda_packet_type __read_mostly = {
 	.type	= cpu_to_be16(ETH_P_IRDA),
 	.func	= irlap_driver_rcv,	/* Packet type handler irlap_frame.c */
 };

net/llc/llc_core.c

···
 	kfree(sap);
 }
 
-static struct packet_type llc_packet_type = {
+static struct packet_type llc_packet_type __read_mostly = {
 	.type = cpu_to_be16(ETH_P_802_2),
 	.func = llc_rcv,
 };
 
-static struct packet_type llc_tr_packet_type = {
+static struct packet_type llc_tr_packet_type __read_mostly = {
 	.type = cpu_to_be16(ETH_P_TR_802_2),
 	.func = llc_rcv,
 };

net/phonet/af_phonet.c

···
 	return NET_RX_DROP;
 }
 
-static struct packet_type phonet_packet_type = {
+static struct packet_type phonet_packet_type __read_mostly = {
 	.type = cpu_to_be16(ETH_P_PHONET),
-	.dev = NULL,
 	.func = phonet_rcv,
 };
 

net/x25/af_x25.c

···
 
 SOCKOPS_WRAP(x25_proto, AF_X25);
 
-static struct packet_type x25_packet_type = {
+static struct packet_type x25_packet_type __read_mostly = {
 	.type =	cpu_to_be16(ETH_P_X25),
 	.func =	x25_lapb_receive_frame,
 };