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 <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 2 insertions, 2 deletions

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index 627be4dc7fb0..d5aaabbb7cb3 100644
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1500,7 +1500,7 @@ static int ipv4_proc_init(void);
  *      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,
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c
index 3f6b7354699b..3d67d1ffed77 100644
--- a/net/ipv4/arp.c
+++ b/net/ipv4/arp.c
@@ -1225,7 +1225,7 @@ void arp_ifdown(struct net_device *dev)
  *      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,
 };