[NET]: Add const markers to various variables.

the patch below marks various variables const in net/; the goal is to
move them to the .rodata section so that they can't false-share
cachelines with things that get written to, as well as potentially
helping gcc a bit with optimisations.  (these were found using a gcc
patch to warn about such variables)

Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

3 files changed, 4 insertions, 4 deletions

diff --git a/net/ipv4/ipvs/ip_vs_conn.c b/net/ipv4/ipvs/ip_vs_conn.c
index f828fa2eb7de..2a3a8c59c655 100644
--- a/net/ipv4/ipvs/ip_vs_conn.c
+++ b/net/ipv4/ipvs/ip_vs_conn.c
@@ -771,7 +771,7 @@ static inline int todrop_entry(struct ip_vs_conn *cp)
          * The drop rate array needs tuning for real environments.
          * Called from timer bh only => no locking
          */
-        static char todrop_rate[9] = {0, 1, 2, 3, 4, 5, 6, 7, 8};
+        static const char todrop_rate[9] = {0, 1, 2, 3, 4, 5, 6, 7, 8};
         static char todrop_counter[9] = {0};
         int i;
 
diff --git a/net/ipv4/ipvs/ip_vs_ctl.c b/net/ipv4/ipvs/ip_vs_ctl.c
index 2d66848e7aa0..9bdcf31b760e 100644
--- a/net/ipv4/ipvs/ip_vs_ctl.c
+++ b/net/ipv4/ipvs/ip_vs_ctl.c
@@ -1909,7 +1909,7 @@ static int ip_vs_set_timeout(struct ip_vs_timeout_user *u)
 #define DAEMON_ARG_LEN          (sizeof(struct ip_vs_daemon_user))
 #define MAX_ARG_LEN             SVCDEST_ARG_LEN
 
-static unsigned char set_arglen[SET_CMDID(IP_VS_SO_SET_MAX)+1] = {
+static const unsigned char set_arglen[SET_CMDID(IP_VS_SO_SET_MAX)+1] = {
         [SET_CMDID(IP_VS_SO_SET_ADD)]           = SERVICE_ARG_LEN,
         [SET_CMDID(IP_VS_SO_SET_EDIT)]          = SERVICE_ARG_LEN,
         [SET_CMDID(IP_VS_SO_SET_DEL)]           = SERVICE_ARG_LEN,
@@ -2180,7 +2180,7 @@ __ip_vs_get_timeouts(struct ip_vs_timeout_user *u)
 #define GET_TIMEOUT_ARG_LEN     (sizeof(struct ip_vs_timeout_user))
 #define GET_DAEMON_ARG_LEN      (sizeof(struct ip_vs_daemon_user) * 2)
 
-static unsigned char get_arglen[GET_CMDID(IP_VS_SO_GET_MAX)+1] = {
+static const unsigned char get_arglen[GET_CMDID(IP_VS_SO_GET_MAX)+1] = {
         [GET_CMDID(IP_VS_SO_GET_VERSION)]       = 64,
         [GET_CMDID(IP_VS_SO_GET_INFO)]          = GET_INFO_ARG_LEN,
         [GET_CMDID(IP_VS_SO_GET_SERVICES)]      = GET_SERVICES_ARG_LEN,
diff --git a/net/ipv4/ipvs/ip_vs_proto_tcp.c b/net/ipv4/ipvs/ip_vs_proto_tcp.c
index c19408973c09..0e878fd6215c 100644
--- a/net/ipv4/ipvs/ip_vs_proto_tcp.c
+++ b/net/ipv4/ipvs/ip_vs_proto_tcp.c
@@ -251,7 +251,7 @@ tcp_csum_check(struct sk_buff *skb, struct ip_vs_protocol *pp)
 #define TCP_DIR_OUTPUT          4
 #define TCP_DIR_INPUT_ONLY      8
 
-static int tcp_state_off[IP_VS_DIR_LAST] = {
+static const int tcp_state_off[IP_VS_DIR_LAST] = {
         [IP_VS_DIR_INPUT]               =       TCP_DIR_INPUT,
         [IP_VS_DIR_OUTPUT]              =       TCP_DIR_OUTPUT,
         [IP_VS_DIR_INPUT_ONLY]          =       TCP_DIR_INPUT_ONLY,