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authorJan Engelhardt <jengelh@medozas.de>2009-07-07 20:54:30 +0200
committerJan Engelhardt <jengelh@medozas.de>2010-05-11 18:35:27 +0200
commitb4ba26119b06052888696491f614201817491a0d (patch)
treed6dc2a4e0f78641b5b64a1728322c81cbad09974 /net/netfilter/xt_tcpudp.c
parent62fc8051083a334578c3f4b3488808f210b4565f (diff)
downloadlinux-stericsson-b4ba26119b06052888696491f614201817491a0d.tar.gz
netfilter: xtables: change hotdrop pointer to direct modification
Since xt_action_param is writable, let's use it. The pointer to 'bool hotdrop' always worried (8 bytes (64-bit) to write 1 byte!). Surprisingly results in a reduction in size: text data bss filename 5457066 692730 357892 vmlinux.o-prev 5456554 692730 357892 vmlinux.o Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Diffstat (limited to 'net/netfilter/xt_tcpudp.c')
-rw-r--r--net/netfilter/xt_tcpudp.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/net/netfilter/xt_tcpudp.c b/net/netfilter/xt_tcpudp.c
index dedde33c9db6..c14d4645daa3 100644
--- a/net/netfilter/xt_tcpudp.c
+++ b/net/netfilter/xt_tcpudp.c
@@ -77,7 +77,7 @@ static bool tcp_mt(const struct sk_buff *skb, struct xt_action_param *par)
*/
if (par->fragoff == 1) {
pr_debug("Dropping evil TCP offset=1 frag.\n");
- *par->hotdrop = true;
+ par->hotdrop = true;
}
/* Must not be a fragment. */
return false;
@@ -90,7 +90,7 @@ static bool tcp_mt(const struct sk_buff *skb, struct xt_action_param *par)
/* We've been asked to examine this packet, and we
can't. Hence, no choice but to drop. */
pr_debug("Dropping evil TCP offset=0 tinygram.\n");
- *par->hotdrop = true;
+ par->hotdrop = true;
return false;
}
@@ -108,13 +108,13 @@ static bool tcp_mt(const struct sk_buff *skb, struct xt_action_param *par)
return false;
if (tcpinfo->option) {
if (th->doff * 4 < sizeof(_tcph)) {
- *par->hotdrop = true;
+ par->hotdrop = true;
return false;
}
if (!tcp_find_option(tcpinfo->option, skb, par->thoff,
th->doff*4 - sizeof(_tcph),
tcpinfo->invflags & XT_TCP_INV_OPTION,
- par->hotdrop))
+ &par->hotdrop))
return false;
}
return true;
@@ -143,7 +143,7 @@ static bool udp_mt(const struct sk_buff *skb, struct xt_action_param *par)
/* We've been asked to examine this packet, and we
can't. Hence, no choice but to drop. */
pr_debug("Dropping evil UDP tinygram.\n");
- *par->hotdrop = true;
+ par->hotdrop = true;
return false;
}