[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>

8 files changed, 12 insertions, 12 deletions

diff --git a/net/ipv4/netfilter/ip_conntrack_amanda.c b/net/ipv4/netfilter/ip_conntrack_amanda.c
index fa3f914..e52847f 100644
--- a/net/ipv4/netfilter/ip_conntrack_amanda.c
+++ b/net/ipv4/netfilter/ip_conntrack_amanda.c
@@ -37,7 +37,7 @@ MODULE_LICENSE("GPL");
 module_param(master_timeout, int, 0600);
 MODULE_PARM_DESC(master_timeout, "timeout for the master connection");
 
-static char *conns[] = { "DATA ", "MESG ", "INDEX " };
+static const char *conns[] = { "DATA ", "MESG ", "INDEX " };
 
 /* This is slow, but it's simple. --RR */
 static char *amanda_buffer;
diff --git a/net/ipv4/netfilter/ip_conntrack_ftp.c b/net/ipv4/netfilter/ip_conntrack_ftp.c
index 59e12b0..68b173b 100644
--- a/net/ipv4/netfilter/ip_conntrack_ftp.c
+++ b/net/ipv4/netfilter/ip_conntrack_ftp.c
@@ -55,7 +55,7 @@ static int try_rfc959(const char *, size_t, u_int32_t [], char);
 static int try_eprt(const char *, size_t, u_int32_t [], char);
 static int try_epsv_response(const char *, size_t, u_int32_t [], char);
 
-static struct ftp_search {
+static const struct ftp_search {
 	enum ip_conntrack_dir dir;
 	const char *pattern;
 	size_t plen;
diff --git a/net/ipv4/netfilter/ip_conntrack_irc.c b/net/ipv4/netfilter/ip_conntrack_irc.c
index 2dea1db..d7c4042 100644
--- a/net/ipv4/netfilter/ip_conntrack_irc.c
+++ b/net/ipv4/netfilter/ip_conntrack_irc.c
@@ -59,7 +59,7 @@ MODULE_PARM_DESC(max_dcc_channels, "max number of expected DCC channels per IRC
 module_param(dcc_timeout, int, 0400);
 MODULE_PARM_DESC(dcc_timeout, "timeout on for unestablished DCC channels");
 
-static char *dccprotos[] = { "SEND ", "CHAT ", "MOVE ", "TSEND ", "SCHAT " };
+static const char *dccprotos[] = { "SEND ", "CHAT ", "MOVE ", "TSEND ", "SCHAT " };
 #define MINMATCHLEN	5
 
 #if 0
diff --git a/net/ipv4/netfilter/ip_conntrack_proto_icmp.c b/net/ipv4/netfilter/ip_conntrack_proto_icmp.c
index e4d6b26..5f9925d 100644
--- a/net/ipv4/netfilter/ip_conntrack_proto_icmp.c
+++ b/net/ipv4/netfilter/ip_conntrack_proto_icmp.c
@@ -51,7 +51,7 @@ static int icmp_invert_tuple(struct ip_conntrack_tuple *tuple,
 			     const struct ip_conntrack_tuple *orig)
 {
 	/* Add 1; spaces filled with 0. */
-	static u_int8_t invmap[]
+	static const u_int8_t invmap[]
 		= { [ICMP_ECHO] = ICMP_ECHOREPLY + 1,
 		    [ICMP_ECHOREPLY] = ICMP_ECHO + 1,
 		    [ICMP_TIMESTAMP] = ICMP_TIMESTAMPREPLY + 1,
@@ -110,7 +110,7 @@ static int icmp_packet(struct ip_conntrack *ct,
 	return NF_ACCEPT;
 }
 
-static u_int8_t valid_new[] = { 
+static const u_int8_t valid_new[] = { 
 	[ICMP_ECHO] = 1,
 	[ICMP_TIMESTAMP] = 1,
 	[ICMP_INFO_REQUEST] = 1,
diff --git a/net/ipv4/netfilter/ip_conntrack_proto_sctp.c b/net/ipv4/netfilter/ip_conntrack_proto_sctp.c
index 59a4a01..977fb59 100644
--- a/net/ipv4/netfilter/ip_conntrack_proto_sctp.c
+++ b/net/ipv4/netfilter/ip_conntrack_proto_sctp.c
@@ -65,7 +65,7 @@ static unsigned long ip_ct_sctp_timeout_shutdown_sent     = 300 SECS / 1000;
 static unsigned long ip_ct_sctp_timeout_shutdown_recd     = 300 SECS / 1000;
 static unsigned long ip_ct_sctp_timeout_shutdown_ack_sent =   3 SECS;
 
-static unsigned long * sctp_timeouts[]
+static const unsigned long * sctp_timeouts[]
 = { NULL,                                  /* SCTP_CONNTRACK_NONE  */
     &ip_ct_sctp_timeout_closed,	           /* SCTP_CONNTRACK_CLOSED */
     &ip_ct_sctp_timeout_cookie_wait,       /* SCTP_CONNTRACK_COOKIE_WAIT */
@@ -118,7 +118,7 @@ cookie echoed to closed.
 */
 
 /* SCTP conntrack state transitions */
-static enum sctp_conntrack sctp_conntracks[2][9][SCTP_CONNTRACK_MAX] = {
+static const enum sctp_conntrack sctp_conntracks[2][9][SCTP_CONNTRACK_MAX] = {
 	{
 /*	ORIGINAL	*/
 /*                  sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA */
diff --git a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
index ee3b7d6..6259816 100644
--- a/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
+++ b/net/ipv4/netfilter/ip_conntrack_proto_tcp.c
@@ -99,7 +99,7 @@ unsigned long ip_ct_tcp_timeout_close =        10 SECS;
    to ~13-30min depending on RTO. */
 unsigned long ip_ct_tcp_timeout_max_retrans =     5 MINS;
  
-static unsigned long * tcp_timeouts[]
+static const unsigned long * tcp_timeouts[]
 = { NULL,                              /*      TCP_CONNTRACK_NONE */
     &ip_ct_tcp_timeout_syn_sent,       /*      TCP_CONNTRACK_SYN_SENT, */
     &ip_ct_tcp_timeout_syn_recv,       /*      TCP_CONNTRACK_SYN_RECV, */
@@ -170,7 +170,7 @@ enum tcp_bit_set {
  *	if they are invalid
  *	or we do not support the request (simultaneous open)
  */
-static enum tcp_conntrack tcp_conntracks[2][6][TCP_CONNTRACK_MAX] = {
+static const enum tcp_conntrack tcp_conntracks[2][6][TCP_CONNTRACK_MAX] = {
 	{
 /* ORIGINAL */
 /* 	     sNO, sSS, sSR, sES, sFW, sCW, sLA, sTW, sCL, sLI	*/
@@ -817,7 +817,7 @@ void ip_conntrack_tcp_update(struct sk_buff *skb,
 #define	TH_CWR	0x80
 
 /* table of valid flag combinations - ECE and CWR are always valid */
-static u8 tcp_valid_flags[(TH_FIN|TH_SYN|TH_RST|TH_PUSH|TH_ACK|TH_URG) + 1] =
+static const u8 tcp_valid_flags[(TH_FIN|TH_SYN|TH_RST|TH_PUSH|TH_ACK|TH_URG) + 1] =
 {
 	[TH_SYN]			= 1,
 	[TH_SYN|TH_ACK]			= 1,
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index 75c27e9..45886c8 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -1892,7 +1892,7 @@ static int ipt_get_matches(char *buffer, char **start, off_t offset, int length)
 	return pos;
 }
 
-static struct { char *name; get_info_t *get_info; } ipt_proc_entry[] =
+static const struct { char *name; get_info_t *get_info; } ipt_proc_entry[] =
 { { "ip_tables_names", ipt_get_tables },
   { "ip_tables_targets", ipt_get_targets },
   { "ip_tables_matches", ipt_get_matches },
diff --git a/net/ipv4/netfilter/ipt_LOG.c b/net/ipv4/netfilter/ipt_LOG.c
index 92ed050..180d6ca 100644
--- a/net/ipv4/netfilter/ipt_LOG.c
+++ b/net/ipv4/netfilter/ipt_LOG.c
@@ -197,7 +197,7 @@ static void dump_packet(const struct nf_loginfo *info,
 	}
 	case IPPROTO_ICMP: {
 		struct icmphdr _icmph, *ich;
-		static size_t required_len[NR_ICMP_TYPES+1]
+		static const size_t required_len[NR_ICMP_TYPES+1]
 			= { [ICMP_ECHOREPLY] = 4,
 			    [ICMP_DEST_UNREACH]
 			    = 8 + sizeof(struct iphdr),