[NETFILTER]: nf_conntrack_{tcp,sctp}: shrink state table

The TCP and SCTP conntrack state transition tables only holds small numbers, but gcc uses 4 byte per entry for the enum. Switching to an u8 reduces the size from 480 to 120 bytes for TCP and from 576 to 144 bytes for SCTP. Signed-off-by: Patrick McHardy <kaber@trash.net> Signed-off-by: David S. Miller <davem@davemloft.net>
git-mirror · Jan 28, 2008 · a5e73c2 · a5e73c2
1 parent 77e2420
commit a5e73c2
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diff --git a/net/netfilter/nf_conntrack_proto_sctp.c b/net/netfilter/nf_conntrack_proto_sctp.c
@@ -110,7 +110,7 @@ cookie echoed to closed.
 */
 
 /* SCTP conntrack state transitions */
-static const enum sctp_conntrack sctp_conntracks[2][9][SCTP_CONNTRACK_MAX] = {
+static const u8 sctp_conntracks[2][9][SCTP_CONNTRACK_MAX] = {
 	{
 /*	ORIGINAL	*/
 /*                  sNO, sCL, sCW, sCE, sES, sSS, sSR, sSA */

diff --git a/net/netfilter/nf_conntrack_proto_tcp.c b/net/netfilter/nf_conntrack_proto_tcp.c
@@ -149,7 +149,7 @@ enum tcp_bit_set {
  *	if they are invalid
  *	or we do not support the request (simultaneous open)
  */
-static const enum tcp_conntrack tcp_conntracks[2][6][TCP_CONNTRACK_MAX] = {
+static const u8 tcp_conntracks[2][6][TCP_CONNTRACK_MAX] = {
 	{
 /* ORIGINAL */
 /* 	     sNO, sSS, sSR, sES, sFW, sCW, sLA, sTW, sCL, sLI	*/