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authorJan Engelhardt <jengelh@medozas.de>2008-10-08 05:35:13 -0400
committerPatrick McHardy <kaber@trash.net>2008-10-08 05:35:13 -0400
commit8cc784eec6676b58e7f60419c88179aaa97bf71c (patch)
tree03847986f09580dccfee9e9afde68cf578a2d996 /net/bridge
parent19eda879a136889110c692dec4c2ab59e0e43cef (diff)
netfilter: change return types of match functions for ebtables extensions
Signed-off-by: Jan Engelhardt <jengelh@medozas.de> Signed-off-by: Patrick McHardy <kaber@trash.net>
Diffstat (limited to 'net/bridge')
-rw-r--r--net/bridge/netfilter/ebt_802_3.c13
-rw-r--r--net/bridge/netfilter/ebt_among.c44
-rw-r--r--net/bridge/netfilter/ebt_arp.c35
-rw-r--r--net/bridge/netfilter/ebt_ip.c25
-rw-r--r--net/bridge/netfilter/ebt_ip6.c26
-rw-r--r--net/bridge/netfilter/ebt_limit.c6
-rw-r--r--net/bridge/netfilter/ebt_mark_m.c6
-rw-r--r--net/bridge/netfilter/ebt_pkttype.c4
-rw-r--r--net/bridge/netfilter/ebt_stp.c39
-rw-r--r--net/bridge/netfilter/ebt_vlan.c8
10 files changed, 103 insertions, 103 deletions
diff --git a/net/bridge/netfilter/ebt_802_3.c b/net/bridge/netfilter/ebt_802_3.c
index 868df9c1e42b..8ebe62b9bcc1 100644
--- a/net/bridge/netfilter/ebt_802_3.c
+++ b/net/bridge/netfilter/ebt_802_3.c
@@ -12,7 +12,8 @@
12#include <linux/netfilter_bridge/ebtables.h> 12#include <linux/netfilter_bridge/ebtables.h>
13#include <linux/netfilter_bridge/ebt_802_3.h> 13#include <linux/netfilter_bridge/ebt_802_3.h>
14 14
15static int ebt_filter_802_3(const struct sk_buff *skb, const struct net_device *in, 15static bool ebt_filter_802_3(const struct sk_buff *skb,
16 const struct net_device *in,
16 const struct net_device *out, const void *data, unsigned int datalen) 17 const struct net_device *out, const void *data, unsigned int datalen)
17{ 18{
18 const struct ebt_802_3_info *info = data; 19 const struct ebt_802_3_info *info = data;
@@ -21,19 +22,19 @@ static int ebt_filter_802_3(const struct sk_buff *skb, const struct net_device *
21 22
22 if (info->bitmask & EBT_802_3_SAP) { 23 if (info->bitmask & EBT_802_3_SAP) {
23 if (FWINV(info->sap != hdr->llc.ui.ssap, EBT_802_3_SAP)) 24 if (FWINV(info->sap != hdr->llc.ui.ssap, EBT_802_3_SAP))
24 return EBT_NOMATCH; 25 return false;
25 if (FWINV(info->sap != hdr->llc.ui.dsap, EBT_802_3_SAP)) 26 if (FWINV(info->sap != hdr->llc.ui.dsap, EBT_802_3_SAP))
26 return EBT_NOMATCH; 27 return false;
27 } 28 }
28 29
29 if (info->bitmask & EBT_802_3_TYPE) { 30 if (info->bitmask & EBT_802_3_TYPE) {
30 if (!(hdr->llc.ui.dsap == CHECK_TYPE && hdr->llc.ui.ssap == CHECK_TYPE)) 31 if (!(hdr->llc.ui.dsap == CHECK_TYPE && hdr->llc.ui.ssap == CHECK_TYPE))
31 return EBT_NOMATCH; 32 return false;
32 if (FWINV(info->type != type, EBT_802_3_TYPE)) 33 if (FWINV(info->type != type, EBT_802_3_TYPE))
33 return EBT_NOMATCH; 34 return false;
34 } 35 }
35 36
36 return EBT_MATCH; 37 return true;
37} 38}
38 39
39static struct ebt_match filter_802_3; 40static struct ebt_match filter_802_3;
diff --git a/net/bridge/netfilter/ebt_among.c b/net/bridge/netfilter/ebt_among.c
index 95e2e70ac90a..bfdc67bcbfaf 100644
--- a/net/bridge/netfilter/ebt_among.c
+++ b/net/bridge/netfilter/ebt_among.c
@@ -14,8 +14,8 @@
14#include <linux/if_arp.h> 14#include <linux/if_arp.h>
15#include <linux/module.h> 15#include <linux/module.h>
16 16
17static int ebt_mac_wormhash_contains(const struct ebt_mac_wormhash *wh, 17static bool ebt_mac_wormhash_contains(const struct ebt_mac_wormhash *wh,
18 const char *mac, __be32 ip) 18 const char *mac, __be32 ip)
19{ 19{
20 /* You may be puzzled as to how this code works. 20 /* You may be puzzled as to how this code works.
21 * Some tricks were used, refer to 21 * Some tricks were used, refer to
@@ -33,23 +33,19 @@ static int ebt_mac_wormhash_contains(const struct ebt_mac_wormhash *wh,
33 if (ip) { 33 if (ip) {
34 for (i = start; i < limit; i++) { 34 for (i = start; i < limit; i++) {
35 p = &wh->pool[i]; 35 p = &wh->pool[i];
36 if (cmp[1] == p->cmp[1] && cmp[0] == p->cmp[0]) { 36 if (cmp[1] == p->cmp[1] && cmp[0] == p->cmp[0])
37 if (p->ip == 0 || p->ip == ip) { 37 if (p->ip == 0 || p->ip == ip)
38 return 1; 38 return true;
39 }
40 }
41 } 39 }
42 } else { 40 } else {
43 for (i = start; i < limit; i++) { 41 for (i = start; i < limit; i++) {
44 p = &wh->pool[i]; 42 p = &wh->pool[i];
45 if (cmp[1] == p->cmp[1] && cmp[0] == p->cmp[0]) { 43 if (cmp[1] == p->cmp[1] && cmp[0] == p->cmp[0])
46 if (p->ip == 0) { 44 if (p->ip == 0)
47 return 1; 45 return true;
48 }
49 }
50 } 46 }
51 } 47 }
52 return 0; 48 return false;
53} 49}
54 50
55static int ebt_mac_wormhash_check_integrity(const struct ebt_mac_wormhash 51static int ebt_mac_wormhash_check_integrity(const struct ebt_mac_wormhash
@@ -131,10 +127,10 @@ static int get_ip_src(const struct sk_buff *skb, __be32 *addr)
131 return 0; 127 return 0;
132} 128}
133 129
134static int ebt_filter_among(const struct sk_buff *skb, 130static bool ebt_filter_among(const struct sk_buff *skb,
135 const struct net_device *in, 131 const struct net_device *in,
136 const struct net_device *out, const void *data, 132 const struct net_device *out, const void *data,
137 unsigned int datalen) 133 unsigned int datalen)
138{ 134{
139 const struct ebt_among_info *info = data; 135 const struct ebt_among_info *info = data;
140 const char *dmac, *smac; 136 const char *dmac, *smac;
@@ -147,34 +143,34 @@ static int ebt_filter_among(const struct sk_buff *skb,
147 if (wh_src) { 143 if (wh_src) {
148 smac = eth_hdr(skb)->h_source; 144 smac = eth_hdr(skb)->h_source;
149 if (get_ip_src(skb, &sip)) 145 if (get_ip_src(skb, &sip))
150 return EBT_NOMATCH; 146 return false;
151 if (!(info->bitmask & EBT_AMONG_SRC_NEG)) { 147 if (!(info->bitmask & EBT_AMONG_SRC_NEG)) {
152 /* we match only if it contains */ 148 /* we match only if it contains */
153 if (!ebt_mac_wormhash_contains(wh_src, smac, sip)) 149 if (!ebt_mac_wormhash_contains(wh_src, smac, sip))
154 return EBT_NOMATCH; 150 return false;
155 } else { 151 } else {
156 /* we match only if it DOES NOT contain */ 152 /* we match only if it DOES NOT contain */
157 if (ebt_mac_wormhash_contains(wh_src, smac, sip)) 153 if (ebt_mac_wormhash_contains(wh_src, smac, sip))
158 return EBT_NOMATCH; 154 return false;
159 } 155 }
160 } 156 }
161 157
162 if (wh_dst) { 158 if (wh_dst) {
163 dmac = eth_hdr(skb)->h_dest; 159 dmac = eth_hdr(skb)->h_dest;
164 if (get_ip_dst(skb, &dip)) 160 if (get_ip_dst(skb, &dip))
165 return EBT_NOMATCH; 161 return false;
166 if (!(info->bitmask & EBT_AMONG_DST_NEG)) { 162 if (!(info->bitmask & EBT_AMONG_DST_NEG)) {
167 /* we match only if it contains */ 163 /* we match only if it contains */
168 if (!ebt_mac_wormhash_contains(wh_dst, dmac, dip)) 164 if (!ebt_mac_wormhash_contains(wh_dst, dmac, dip))
169 return EBT_NOMATCH; 165 return false;
170 } else { 166 } else {
171 /* we match only if it DOES NOT contain */ 167 /* we match only if it DOES NOT contain */
172 if (ebt_mac_wormhash_contains(wh_dst, dmac, dip)) 168 if (ebt_mac_wormhash_contains(wh_dst, dmac, dip))
173 return EBT_NOMATCH; 169 return false;
174 } 170 }
175 } 171 }
176 172
177 return EBT_MATCH; 173 return true;
178} 174}
179 175
180static bool 176static bool
diff --git a/net/bridge/netfilter/ebt_arp.c b/net/bridge/netfilter/ebt_arp.c
index cb33672380d0..f1f0bcf5524a 100644
--- a/net/bridge/netfilter/ebt_arp.c
+++ b/net/bridge/netfilter/ebt_arp.c
@@ -15,7 +15,8 @@
15#include <linux/netfilter_bridge/ebtables.h> 15#include <linux/netfilter_bridge/ebtables.h>
16#include <linux/netfilter_bridge/ebt_arp.h> 16#include <linux/netfilter_bridge/ebt_arp.h>
17 17
18static int ebt_filter_arp(const struct sk_buff *skb, const struct net_device *in, 18static bool ebt_filter_arp(const struct sk_buff *skb,
19 const struct net_device *in,
19 const struct net_device *out, const void *data, unsigned int datalen) 20 const struct net_device *out, const void *data, unsigned int datalen)
20{ 21{
21 const struct ebt_arp_info *info = data; 22 const struct ebt_arp_info *info = data;
@@ -24,42 +25,42 @@ static int ebt_filter_arp(const struct sk_buff *skb, const struct net_device *in
24 25
25 ah = skb_header_pointer(skb, 0, sizeof(_arph), &_arph); 26 ah = skb_header_pointer(skb, 0, sizeof(_arph), &_arph);
26 if (ah == NULL) 27 if (ah == NULL)
27 return EBT_NOMATCH; 28 return false;
28 if (info->bitmask & EBT_ARP_OPCODE && FWINV(info->opcode != 29 if (info->bitmask & EBT_ARP_OPCODE && FWINV(info->opcode !=
29 ah->ar_op, EBT_ARP_OPCODE)) 30 ah->ar_op, EBT_ARP_OPCODE))
30 return EBT_NOMATCH; 31 return false;
31 if (info->bitmask & EBT_ARP_HTYPE && FWINV(info->htype != 32 if (info->bitmask & EBT_ARP_HTYPE && FWINV(info->htype !=
32 ah->ar_hrd, EBT_ARP_HTYPE)) 33 ah->ar_hrd, EBT_ARP_HTYPE))
33 return EBT_NOMATCH; 34 return false;
34 if (info->bitmask & EBT_ARP_PTYPE && FWINV(info->ptype != 35 if (info->bitmask & EBT_ARP_PTYPE && FWINV(info->ptype !=
35 ah->ar_pro, EBT_ARP_PTYPE)) 36 ah->ar_pro, EBT_ARP_PTYPE))
36 return EBT_NOMATCH; 37 return false;
37 38
38 if (info->bitmask & (EBT_ARP_SRC_IP | EBT_ARP_DST_IP | EBT_ARP_GRAT)) { 39 if (info->bitmask & (EBT_ARP_SRC_IP | EBT_ARP_DST_IP | EBT_ARP_GRAT)) {
39 const __be32 *sap, *dap; 40 const __be32 *sap, *dap;
40 __be32 saddr, daddr; 41 __be32 saddr, daddr;
41 42
42 if (ah->ar_pln != sizeof(__be32) || ah->ar_pro != htons(ETH_P_IP)) 43 if (ah->ar_pln != sizeof(__be32) || ah->ar_pro != htons(ETH_P_IP))
43 return EBT_NOMATCH; 44 return false;
44 sap = skb_header_pointer(skb, sizeof(struct arphdr) + 45 sap = skb_header_pointer(skb, sizeof(struct arphdr) +
45 ah->ar_hln, sizeof(saddr), 46 ah->ar_hln, sizeof(saddr),
46 &saddr); 47 &saddr);
47 if (sap == NULL) 48 if (sap == NULL)
48 return EBT_NOMATCH; 49 return false;
49 dap = skb_header_pointer(skb, sizeof(struct arphdr) + 50 dap = skb_header_pointer(skb, sizeof(struct arphdr) +
50 2*ah->ar_hln+sizeof(saddr), 51 2*ah->ar_hln+sizeof(saddr),
51 sizeof(daddr), &daddr); 52 sizeof(daddr), &daddr);
52 if (dap == NULL) 53 if (dap == NULL)
53 return EBT_NOMATCH; 54 return false;
54 if (info->bitmask & EBT_ARP_SRC_IP && 55 if (info->bitmask & EBT_ARP_SRC_IP &&
55 FWINV(info->saddr != (*sap & info->smsk), EBT_ARP_SRC_IP)) 56 FWINV(info->saddr != (*sap & info->smsk), EBT_ARP_SRC_IP))
56 return EBT_NOMATCH; 57 return false;
57 if (info->bitmask & EBT_ARP_DST_IP && 58 if (info->bitmask & EBT_ARP_DST_IP &&
58 FWINV(info->daddr != (*dap & info->dmsk), EBT_ARP_DST_IP)) 59 FWINV(info->daddr != (*dap & info->dmsk), EBT_ARP_DST_IP))
59 return EBT_NOMATCH; 60 return false;
60 if (info->bitmask & EBT_ARP_GRAT && 61 if (info->bitmask & EBT_ARP_GRAT &&
61 FWINV(*dap != *sap, EBT_ARP_GRAT)) 62 FWINV(*dap != *sap, EBT_ARP_GRAT))
62 return EBT_NOMATCH; 63 return false;
63 } 64 }
64 65
65 if (info->bitmask & (EBT_ARP_SRC_MAC | EBT_ARP_DST_MAC)) { 66 if (info->bitmask & (EBT_ARP_SRC_MAC | EBT_ARP_DST_MAC)) {
@@ -68,18 +69,18 @@ static int ebt_filter_arp(const struct sk_buff *skb, const struct net_device *in
68 uint8_t verdict, i; 69 uint8_t verdict, i;
69 70
70 if (ah->ar_hln != ETH_ALEN || ah->ar_hrd != htons(ARPHRD_ETHER)) 71 if (ah->ar_hln != ETH_ALEN || ah->ar_hrd != htons(ARPHRD_ETHER))
71 return EBT_NOMATCH; 72 return false;
72 if (info->bitmask & EBT_ARP_SRC_MAC) { 73 if (info->bitmask & EBT_ARP_SRC_MAC) {
73 mp = skb_header_pointer(skb, sizeof(struct arphdr), 74 mp = skb_header_pointer(skb, sizeof(struct arphdr),
74 sizeof(_mac), &_mac); 75 sizeof(_mac), &_mac);
75 if (mp == NULL) 76 if (mp == NULL)
76 return EBT_NOMATCH; 77 return false;
77 verdict = 0; 78 verdict = 0;
78 for (i = 0; i < 6; i++) 79 for (i = 0; i < 6; i++)
79 verdict |= (mp[i] ^ info->smaddr[i]) & 80 verdict |= (mp[i] ^ info->smaddr[i]) &
80 info->smmsk[i]; 81 info->smmsk[i];
81 if (FWINV(verdict != 0, EBT_ARP_SRC_MAC)) 82 if (FWINV(verdict != 0, EBT_ARP_SRC_MAC))
82 return EBT_NOMATCH; 83 return false;
83 } 84 }
84 85
85 if (info->bitmask & EBT_ARP_DST_MAC) { 86 if (info->bitmask & EBT_ARP_DST_MAC) {
@@ -87,17 +88,17 @@ static int ebt_filter_arp(const struct sk_buff *skb, const struct net_device *in
87 ah->ar_hln + ah->ar_pln, 88 ah->ar_hln + ah->ar_pln,
88 sizeof(_mac), &_mac); 89 sizeof(_mac), &_mac);
89 if (mp == NULL) 90 if (mp == NULL)
90 return EBT_NOMATCH; 91 return false;
91 verdict = 0; 92 verdict = 0;
92 for (i = 0; i < 6; i++) 93 for (i = 0; i < 6; i++)
93 verdict |= (mp[i] ^ info->dmaddr[i]) & 94 verdict |= (mp[i] ^ info->dmaddr[i]) &
94 info->dmmsk[i]; 95 info->dmmsk[i];
95 if (FWINV(verdict != 0, EBT_ARP_DST_MAC)) 96 if (FWINV(verdict != 0, EBT_ARP_DST_MAC))
96 return EBT_NOMATCH; 97 return false;
97 } 98 }
98 } 99 }
99 100
100 return EBT_MATCH; 101 return true;
101} 102}
102 103
103static bool ebt_arp_check(const char *tablename, unsigned int hookmask, 104static bool ebt_arp_check(const char *tablename, unsigned int hookmask,
diff --git a/net/bridge/netfilter/ebt_ip.c b/net/bridge/netfilter/ebt_ip.c
index cbf0918ec166..018782f044c4 100644
--- a/net/bridge/netfilter/ebt_ip.c
+++ b/net/bridge/netfilter/ebt_ip.c
@@ -24,7 +24,8 @@ struct tcpudphdr {
24 __be16 dst; 24 __be16 dst;
25}; 25};
26 26
27static int ebt_filter_ip(const struct sk_buff *skb, const struct net_device *in, 27static bool ebt_filter_ip(const struct sk_buff *skb,
28 const struct net_device *in,
28 const struct net_device *out, const void *data, 29 const struct net_device *out, const void *data,
29 unsigned int datalen) 30 unsigned int datalen)
30{ 31{
@@ -36,46 +37,46 @@ static int ebt_filter_ip(const struct sk_buff *skb, const struct net_device *in,
36 37
37 ih = skb_header_pointer(skb, 0, sizeof(_iph), &_iph); 38 ih = skb_header_pointer(skb, 0, sizeof(_iph), &_iph);
38 if (ih == NULL) 39 if (ih == NULL)
39 return EBT_NOMATCH; 40 return false;
40 if (info->bitmask & EBT_IP_TOS && 41 if (info->bitmask & EBT_IP_TOS &&
41 FWINV(info->tos != ih->tos, EBT_IP_TOS)) 42 FWINV(info->tos != ih->tos, EBT_IP_TOS))
42 return EBT_NOMATCH; 43 return false;
43 if (info->bitmask & EBT_IP_SOURCE && 44 if (info->bitmask & EBT_IP_SOURCE &&
44 FWINV((ih->saddr & info->smsk) != 45 FWINV((ih->saddr & info->smsk) !=
45 info->saddr, EBT_IP_SOURCE)) 46 info->saddr, EBT_IP_SOURCE))
46 return EBT_NOMATCH; 47 return false;
47 if ((info->bitmask & EBT_IP_DEST) && 48 if ((info->bitmask & EBT_IP_DEST) &&
48 FWINV((ih->daddr & info->dmsk) != 49 FWINV((ih->daddr & info->dmsk) !=
49 info->daddr, EBT_IP_DEST)) 50 info->daddr, EBT_IP_DEST))
50 return EBT_NOMATCH; 51 return false;
51 if (info->bitmask & EBT_IP_PROTO) { 52 if (info->bitmask & EBT_IP_PROTO) {
52 if (FWINV(info->protocol != ih->protocol, EBT_IP_PROTO)) 53 if (FWINV(info->protocol != ih->protocol, EBT_IP_PROTO))
53 return EBT_NOMATCH; 54 return false;
54 if (!(info->bitmask & EBT_IP_DPORT) && 55 if (!(info->bitmask & EBT_IP_DPORT) &&
55 !(info->bitmask & EBT_IP_SPORT)) 56 !(info->bitmask & EBT_IP_SPORT))
56 return EBT_MATCH; 57 return true;
57 if (ntohs(ih->frag_off) & IP_OFFSET) 58 if (ntohs(ih->frag_off) & IP_OFFSET)
58 return EBT_NOMATCH; 59 return false;
59 pptr = skb_header_pointer(skb, ih->ihl*4, 60 pptr = skb_header_pointer(skb, ih->ihl*4,
60 sizeof(_ports), &_ports); 61 sizeof(_ports), &_ports);
61 if (pptr == NULL) 62 if (pptr == NULL)
62 return EBT_NOMATCH; 63 return false;
63 if (info->bitmask & EBT_IP_DPORT) { 64 if (info->bitmask & EBT_IP_DPORT) {
64 u32 dst = ntohs(pptr->dst); 65 u32 dst = ntohs(pptr->dst);
65 if (FWINV(dst < info->dport[0] || 66 if (FWINV(dst < info->dport[0] ||
66 dst > info->dport[1], 67 dst > info->dport[1],
67 EBT_IP_DPORT)) 68 EBT_IP_DPORT))
68 return EBT_NOMATCH; 69 return false;
69 } 70 }
70 if (info->bitmask & EBT_IP_SPORT) { 71 if (info->bitmask & EBT_IP_SPORT) {
71 u32 src = ntohs(pptr->src); 72 u32 src = ntohs(pptr->src);
72 if (FWINV(src < info->sport[0] || 73 if (FWINV(src < info->sport[0] ||
73 src > info->sport[1], 74 src > info->sport[1],
74 EBT_IP_SPORT)) 75 EBT_IP_SPORT))
75 return EBT_NOMATCH; 76 return false;
76 } 77 }
77 } 78 }
78 return EBT_MATCH; 79 return true;
79} 80}
80 81
81static bool ebt_ip_check(const char *tablename, unsigned int hookmask, 82static bool ebt_ip_check(const char *tablename, unsigned int hookmask,
diff --git a/net/bridge/netfilter/ebt_ip6.c b/net/bridge/netfilter/ebt_ip6.c
index 1230c9ee394a..7fc3928e3fb5 100644
--- a/net/bridge/netfilter/ebt_ip6.c
+++ b/net/bridge/netfilter/ebt_ip6.c
@@ -27,7 +27,7 @@ struct tcpudphdr {
27 __be16 dst; 27 __be16 dst;
28}; 28};
29 29
30static int ebt_filter_ip6(const struct sk_buff *skb, 30static bool ebt_filter_ip6(const struct sk_buff *skb,
31 const struct net_device *in, 31 const struct net_device *in,
32 const struct net_device *out, const void *data, 32 const struct net_device *out, const void *data,
33 unsigned int datalen) 33 unsigned int datalen)
@@ -42,54 +42,54 @@ static int ebt_filter_ip6(const struct sk_buff *skb,
42 42
43 ih6 = skb_header_pointer(skb, 0, sizeof(_ip6h), &_ip6h); 43 ih6 = skb_header_pointer(skb, 0, sizeof(_ip6h), &_ip6h);
44 if (ih6 == NULL) 44 if (ih6 == NULL)
45 return EBT_NOMATCH; 45 return false;
46 if (info->bitmask & EBT_IP6_TCLASS && 46 if (info->bitmask & EBT_IP6_TCLASS &&
47 FWINV(info->tclass != ipv6_get_dsfield(ih6), EBT_IP6_TCLASS)) 47 FWINV(info->tclass != ipv6_get_dsfield(ih6), EBT_IP6_TCLASS))
48 return EBT_NOMATCH; 48 return false;
49 for (i = 0; i < 4; i++) 49 for (i = 0; i < 4; i++)
50 tmp_addr.in6_u.u6_addr32[i] = ih6->saddr.in6_u.u6_addr32[i] & 50 tmp_addr.in6_u.u6_addr32[i] = ih6->saddr.in6_u.u6_addr32[i] &
51 info->smsk.in6_u.u6_addr32[i]; 51 info->smsk.in6_u.u6_addr32[i];
52 if (info->bitmask & EBT_IP6_SOURCE && 52 if (info->bitmask & EBT_IP6_SOURCE &&
53 FWINV((ipv6_addr_cmp(&tmp_addr, &info->saddr) != 0), 53 FWINV((ipv6_addr_cmp(&tmp_addr, &info->saddr) != 0),
54 EBT_IP6_SOURCE)) 54 EBT_IP6_SOURCE))
55 return EBT_NOMATCH; 55 return false;
56 for (i = 0; i < 4; i++) 56 for (i = 0; i < 4; i++)
57 tmp_addr.in6_u.u6_addr32[i] = ih6->daddr.in6_u.u6_addr32[i] & 57 tmp_addr.in6_u.u6_addr32[i] = ih6->daddr.in6_u.u6_addr32[i] &
58 info->dmsk.in6_u.u6_addr32[i]; 58 info->dmsk.in6_u.u6_addr32[i];
59 if (info->bitmask & EBT_IP6_DEST && 59 if (info->bitmask & EBT_IP6_DEST &&
60 FWINV((ipv6_addr_cmp(&tmp_addr, &info->daddr) != 0), EBT_IP6_DEST)) 60 FWINV((ipv6_addr_cmp(&tmp_addr, &info->daddr) != 0), EBT_IP6_DEST))
61 return EBT_NOMATCH; 61 return false;
62 if (info->bitmask & EBT_IP6_PROTO) { 62 if (info->bitmask & EBT_IP6_PROTO) {
63 uint8_t nexthdr = ih6->nexthdr; 63 uint8_t nexthdr = ih6->nexthdr;
64 int offset_ph; 64 int offset_ph;
65 65
66 offset_ph = ipv6_skip_exthdr(skb, sizeof(_ip6h), &nexthdr); 66 offset_ph = ipv6_skip_exthdr(skb, sizeof(_ip6h), &nexthdr);
67 if (offset_ph == -1) 67 if (offset_ph == -1)
68 return EBT_NOMATCH; 68 return false;
69 if (FWINV(info->protocol != nexthdr, EBT_IP6_PROTO)) 69 if (FWINV(info->protocol != nexthdr, EBT_IP6_PROTO))
70 return EBT_NOMATCH; 70 return false;
71 if (!(info->bitmask & EBT_IP6_DPORT) && 71 if (!(info->bitmask & EBT_IP6_DPORT) &&
72 !(info->bitmask & EBT_IP6_SPORT)) 72 !(info->bitmask & EBT_IP6_SPORT))
73 return EBT_MATCH; 73 return true;
74 pptr = skb_header_pointer(skb, offset_ph, sizeof(_ports), 74 pptr = skb_header_pointer(skb, offset_ph, sizeof(_ports),
75 &_ports); 75 &_ports);
76 if (pptr == NULL) 76 if (pptr == NULL)
77 return EBT_NOMATCH; 77 return false;
78 if (info->bitmask & EBT_IP6_DPORT) { 78 if (info->bitmask & EBT_IP6_DPORT) {
79 u32 dst = ntohs(pptr->dst); 79 u32 dst = ntohs(pptr->dst);
80 if (FWINV(dst < info->dport[0] || 80 if (FWINV(dst < info->dport[0] ||
81 dst > info->dport[1], EBT_IP6_DPORT)) 81 dst > info->dport[1], EBT_IP6_DPORT))
82 return EBT_NOMATCH; 82 return false;
83 } 83 }
84 if (info->bitmask & EBT_IP6_SPORT) { 84 if (info->bitmask & EBT_IP6_SPORT) {
85 u32 src = ntohs(pptr->src); 85 u32 src = ntohs(pptr->src);
86 if (FWINV(src < info->sport[0] || 86 if (FWINV(src < info->sport[0] ||
87 src > info->sport[1], EBT_IP6_SPORT)) 87 src > info->sport[1], EBT_IP6_SPORT))
88 return EBT_NOMATCH; 88 return false;
89 } 89 }
90 return EBT_MATCH; 90 return true;
91 } 91 }
92 return EBT_MATCH; 92 return true;
93} 93}
94 94
95static bool ebt_ip6_check(const char *tablename, unsigned int hookmask, 95static bool ebt_ip6_check(const char *tablename, unsigned int hookmask,
diff --git a/net/bridge/netfilter/ebt_limit.c b/net/bridge/netfilter/ebt_limit.c
index 9b04f2be94e9..925065a22a65 100644
--- a/net/bridge/netfilter/ebt_limit.c
+++ b/net/bridge/netfilter/ebt_limit.c
@@ -30,7 +30,7 @@ static DEFINE_SPINLOCK(limit_lock);
30 30
31#define CREDITS_PER_JIFFY POW2_BELOW32(MAX_CPJ) 31#define CREDITS_PER_JIFFY POW2_BELOW32(MAX_CPJ)
32 32
33static int ebt_limit_match(const struct sk_buff *skb, 33static bool ebt_limit_match(const struct sk_buff *skb,
34 const struct net_device *in, const struct net_device *out, 34 const struct net_device *in, const struct net_device *out,
35 const void *data, unsigned int datalen) 35 const void *data, unsigned int datalen)
36{ 36{
@@ -46,11 +46,11 @@ static int ebt_limit_match(const struct sk_buff *skb,
46 /* We're not limited. */ 46 /* We're not limited. */
47 info->credit -= info->cost; 47 info->credit -= info->cost;
48 spin_unlock_bh(&limit_lock); 48 spin_unlock_bh(&limit_lock);
49 return EBT_MATCH; 49 return true;
50 } 50 }
51 51
52 spin_unlock_bh(&limit_lock); 52 spin_unlock_bh(&limit_lock);
53 return EBT_NOMATCH; 53 return false;
54} 54}
55 55
56/* Precision saver. */ 56/* Precision saver. */
diff --git a/net/bridge/netfilter/ebt_mark_m.c b/net/bridge/netfilter/ebt_mark_m.c
index b2707d772c90..ec16c0e2868a 100644
--- a/net/bridge/netfilter/ebt_mark_m.c
+++ b/net/bridge/netfilter/ebt_mark_m.c
@@ -12,15 +12,15 @@
12#include <linux/netfilter_bridge/ebtables.h> 12#include <linux/netfilter_bridge/ebtables.h>
13#include <linux/netfilter_bridge/ebt_mark_m.h> 13#include <linux/netfilter_bridge/ebt_mark_m.h>
14 14
15static int ebt_filter_mark(const struct sk_buff *skb, 15static bool ebt_filter_mark(const struct sk_buff *skb,
16 const struct net_device *in, const struct net_device *out, const void *data, 16 const struct net_device *in, const struct net_device *out, const void *data,
17 unsigned int datalen) 17 unsigned int datalen)
18{ 18{
19 const struct ebt_mark_m_info *info = data; 19 const struct ebt_mark_m_info *info = data;
20 20
21 if (info->bitmask & EBT_MARK_OR) 21 if (info->bitmask & EBT_MARK_OR)
22 return !(!!(skb->mark & info->mask) ^ info->invert); 22 return !!(skb->mark & info->mask) ^ info->invert;
23 return !(((skb->mark & info->mask) == info->mark) ^ info->invert); 23 return ((skb->mark & info->mask) == info->mark) ^ info->invert;
24} 24}
25 25
26static bool ebt_mark_check(const char *tablename, unsigned int hookmask, 26static bool ebt_mark_check(const char *tablename, unsigned int hookmask,
diff --git a/net/bridge/netfilter/ebt_pkttype.c b/net/bridge/netfilter/ebt_pkttype.c
index 4dcd3b86cff6..74b443284366 100644
--- a/net/bridge/netfilter/ebt_pkttype.c
+++ b/net/bridge/netfilter/ebt_pkttype.c
@@ -12,7 +12,7 @@
12#include <linux/netfilter_bridge/ebtables.h> 12#include <linux/netfilter_bridge/ebtables.h>
13#include <linux/netfilter_bridge/ebt_pkttype.h> 13#include <linux/netfilter_bridge/ebt_pkttype.h>
14 14
15static int ebt_filter_pkttype(const struct sk_buff *skb, 15static bool ebt_filter_pkttype(const struct sk_buff *skb,
16 const struct net_device *in, 16 const struct net_device *in,
17 const struct net_device *out, 17 const struct net_device *out,
18 const void *data, 18 const void *data,
@@ -20,7 +20,7 @@ static int ebt_filter_pkttype(const struct sk_buff *skb,
20{ 20{
21 const struct ebt_pkttype_info *info = data; 21 const struct ebt_pkttype_info *info = data;
22 22
23 return (skb->pkt_type != info->pkt_type) ^ info->invert; 23 return (skb->pkt_type == info->pkt_type) ^ info->invert;
24} 24}
25 25
26static bool ebt_pkttype_check(const char *tablename, unsigned int hookmask, 26static bool ebt_pkttype_check(const char *tablename, unsigned int hookmask,
diff --git a/net/bridge/netfilter/ebt_stp.c b/net/bridge/netfilter/ebt_stp.c
index 37d9480a00c6..7618206639ed 100644
--- a/net/bridge/netfilter/ebt_stp.c
+++ b/net/bridge/netfilter/ebt_stp.c
@@ -40,7 +40,7 @@ struct stp_config_pdu {
40#define NR16(p) (p[0] << 8 | p[1]) 40#define NR16(p) (p[0] << 8 | p[1])
41#define NR32(p) ((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3]) 41#define NR32(p) ((p[0] << 24) | (p[1] << 16) | (p[2] << 8) | p[3])
42 42
43static int ebt_filter_config(const struct ebt_stp_info *info, 43static bool ebt_filter_config(const struct ebt_stp_info *info,
44 const struct stp_config_pdu *stpc) 44 const struct stp_config_pdu *stpc)
45{ 45{
46 const struct ebt_stp_config_info *c; 46 const struct ebt_stp_config_info *c;
@@ -51,12 +51,12 @@ static int ebt_filter_config(const struct ebt_stp_info *info,
51 c = &info->config; 51 c = &info->config;
52 if ((info->bitmask & EBT_STP_FLAGS) && 52 if ((info->bitmask & EBT_STP_FLAGS) &&
53 FWINV(c->flags != stpc->flags, EBT_STP_FLAGS)) 53 FWINV(c->flags != stpc->flags, EBT_STP_FLAGS))
54 return EBT_NOMATCH; 54 return false;
55 if (info->bitmask & EBT_STP_ROOTPRIO) { 55 if (info->bitmask & EBT_STP_ROOTPRIO) {
56 v16 = NR16(stpc->root); 56 v16 = NR16(stpc->root);
57 if (FWINV(v16 < c->root_priol || 57 if (FWINV(v16 < c->root_priol ||
58 v16 > c->root_priou, EBT_STP_ROOTPRIO)) 58 v16 > c->root_priou, EBT_STP_ROOTPRIO))
59 return EBT_NOMATCH; 59 return false;
60 } 60 }
61 if (info->bitmask & EBT_STP_ROOTADDR) { 61 if (info->bitmask & EBT_STP_ROOTADDR) {
62 verdict = 0; 62 verdict = 0;
@@ -64,19 +64,19 @@ static int ebt_filter_config(const struct ebt_stp_info *info,
64 verdict |= (stpc->root[2+i] ^ c->root_addr[i]) & 64 verdict |= (stpc->root[2+i] ^ c->root_addr[i]) &
65 c->root_addrmsk[i]; 65 c->root_addrmsk[i];
66 if (FWINV(verdict != 0, EBT_STP_ROOTADDR)) 66 if (FWINV(verdict != 0, EBT_STP_ROOTADDR))
67 return EBT_NOMATCH; 67 return false;
68 } 68 }
69 if (info->bitmask & EBT_STP_ROOTCOST) { 69 if (info->bitmask & EBT_STP_ROOTCOST) {
70 v32 = NR32(stpc->root_cost); 70 v32 = NR32(stpc->root_cost);
71 if (FWINV(v32 < c->root_costl || 71 if (FWINV(v32 < c->root_costl ||
72 v32 > c->root_costu, EBT_STP_ROOTCOST)) 72 v32 > c->root_costu, EBT_STP_ROOTCOST))
73 return EBT_NOMATCH; 73 return false;
74 } 74 }
75 if (info->bitmask & EBT_STP_SENDERPRIO) { 75 if (info->bitmask & EBT_STP_SENDERPRIO) {
76 v16 = NR16(stpc->sender); 76 v16 = NR16(stpc->sender);
77 if (FWINV(v16 < c->sender_priol || 77 if (FWINV(v16 < c->sender_priol ||
78 v16 > c->sender_priou, EBT_STP_SENDERPRIO)) 78 v16 > c->sender_priou, EBT_STP_SENDERPRIO))
79 return EBT_NOMATCH; 79 return false;
80 } 80 }
81 if (info->bitmask & EBT_STP_SENDERADDR) { 81 if (info->bitmask & EBT_STP_SENDERADDR) {
82 verdict = 0; 82 verdict = 0;
@@ -84,42 +84,43 @@ static int ebt_filter_config(const struct ebt_stp_info *info,
84 verdict |= (stpc->sender[2+i] ^ c->sender_addr[i]) & 84 verdict |= (stpc->sender[2+i] ^ c->sender_addr[i]) &
85 c->sender_addrmsk[i]; 85 c->sender_addrmsk[i];
86 if (FWINV(verdict != 0, EBT_STP_SENDERADDR)) 86 if (FWINV(verdict != 0, EBT_STP_SENDERADDR))
87 return EBT_NOMATCH; 87 return false;
88 } 88 }
89 if (info->bitmask & EBT_STP_PORT) { 89 if (info->bitmask & EBT_STP_PORT) {
90 v16 = NR16(stpc->port); 90 v16 = NR16(stpc->port);
91 if (FWINV(v16 < c->portl || 91 if (FWINV(v16 < c->portl ||
92 v16 > c->portu, EBT_STP_PORT)) 92 v16 > c->portu, EBT_STP_PORT))
93 return EBT_NOMATCH; 93 return false;
94 } 94 }
95 if (info->bitmask & EBT_STP_MSGAGE) { 95 if (info->bitmask & EBT_STP_MSGAGE) {
96 v16 = NR16(stpc->msg_age); 96 v16 = NR16(stpc->msg_age);
97 if (FWINV(v16 < c->msg_agel || 97 if (FWINV(v16 < c->msg_agel ||
98 v16 > c->msg_ageu, EBT_STP_MSGAGE)) 98 v16 > c->msg_ageu, EBT_STP_MSGAGE))
99 return EBT_NOMATCH; 99 return false;
100 } 100 }
101 if (info->bitmask & EBT_STP_MAXAGE) { 101 if (info->bitmask & EBT_STP_MAXAGE) {
102 v16 = NR16(stpc->max_age); 102 v16 = NR16(stpc->max_age);
103 if (FWINV(v16 < c->max_agel || 103 if (FWINV(v16 < c->max_agel ||
104 v16 > c->max_ageu, EBT_STP_MAXAGE)) 104 v16 > c->max_ageu, EBT_STP_MAXAGE))
105 return EBT_NOMATCH; 105 return false;
106 } 106 }
107 if (info->bitmask & EBT_STP_HELLOTIME) { 107 if (info->bitmask & EBT_STP_HELLOTIME) {
108 v16 = NR16(stpc->hello_time); 108 v16 = NR16(stpc->hello_time);
109 if (FWINV(v16 < c->hello_timel || 109 if (FWINV(v16 < c->hello_timel ||
110 v16 > c->hello_timeu, EBT_STP_HELLOTIME)) 110 v16 > c->hello_timeu, EBT_STP_HELLOTIME))
111 return EBT_NOMATCH; 111 return false;
112 } 112 }
113 if (info->bitmask & EBT_STP_FWDD) { 113 if (info->bitmask & EBT_STP_FWDD) {
114 v16 = NR16(stpc->forward_delay); 114 v16 = NR16(stpc->forward_delay);
115 if (FWINV(v16 < c->forward_delayl || 115 if (FWINV(v16 < c->forward_delayl ||
116 v16 > c->forward_delayu, EBT_STP_FWDD)) 116 v16 > c->forward_delayu, EBT_STP_FWDD))
117 return EBT_NOMATCH; 117 return false;
118 } 118 }
119 return EBT_MATCH; 119 return true;
120} 120}
121 121
122static int ebt_filter_stp(const struct sk_buff *skb, const struct net_device *in, 122static bool ebt_filter_stp(const struct sk_buff *skb,
123 const struct net_device *in,
123 const struct net_device *out, const void *data, unsigned int datalen) 124 const struct net_device *out, const void *data, unsigned int datalen)
124{ 125{
125 const struct ebt_stp_info *info = data; 126 const struct ebt_stp_info *info = data;
@@ -129,15 +130,15 @@ static int ebt_filter_stp(const struct sk_buff *skb, const struct net_device *in
129 130
130 sp = skb_header_pointer(skb, 0, sizeof(_stph), &_stph); 131 sp = skb_header_pointer(skb, 0, sizeof(_stph), &_stph);
131 if (sp == NULL) 132 if (sp == NULL)
132 return EBT_NOMATCH; 133 return false;
133 134
134 /* The stp code only considers these */ 135 /* The stp code only considers these */
135 if (memcmp(sp, header, sizeof(header))) 136 if (memcmp(sp, header, sizeof(header)))
136 return EBT_NOMATCH; 137 return false;
137 138
138 if (info->bitmask & EBT_STP_TYPE 139 if (info->bitmask & EBT_STP_TYPE
139 && FWINV(info->type != sp->type, EBT_STP_TYPE)) 140 && FWINV(info->type != sp->type, EBT_STP_TYPE))
140 return EBT_NOMATCH; 141 return false;
141 142
142 if (sp->type == BPDU_TYPE_CONFIG && 143 if (sp->type == BPDU_TYPE_CONFIG &&
143 info->bitmask & EBT_STP_CONFIG_MASK) { 144 info->bitmask & EBT_STP_CONFIG_MASK) {
@@ -147,10 +148,10 @@ static int ebt_filter_stp(const struct sk_buff *skb, const struct net_device *in
147 st = skb_header_pointer(skb, sizeof(_stph), 148 st = skb_header_pointer(skb, sizeof(_stph),
148 sizeof(_stpc), &_stpc); 149 sizeof(_stpc), &_stpc);
149 if (st == NULL) 150 if (st == NULL)
150 return EBT_NOMATCH; 151 return false;
151 return ebt_filter_config(info, st); 152 return ebt_filter_config(info, st);
152 } 153 }
153 return EBT_MATCH; 154 return true;
154} 155}
155 156
156static bool ebt_stp_check(const char *tablename, unsigned int hookmask, 157static bool ebt_stp_check(const char *tablename, unsigned int hookmask,
diff --git a/net/bridge/netfilter/ebt_vlan.c b/net/bridge/netfilter/ebt_vlan.c
index fc88d5d59e04..8cc4257a1ade 100644
--- a/net/bridge/netfilter/ebt_vlan.c
+++ b/net/bridge/netfilter/ebt_vlan.c
@@ -38,9 +38,9 @@ MODULE_LICENSE("GPL");
38 38
39#define DEBUG_MSG(args...) if (debug) printk (KERN_DEBUG "ebt_vlan: " args) 39#define DEBUG_MSG(args...) if (debug) printk (KERN_DEBUG "ebt_vlan: " args)
40#define GET_BITMASK(_BIT_MASK_) info->bitmask & _BIT_MASK_ 40#define GET_BITMASK(_BIT_MASK_) info->bitmask & _BIT_MASK_
41#define EXIT_ON_MISMATCH(_MATCH_,_MASK_) {if (!((info->_MATCH_ == _MATCH_)^!!(info->invflags & _MASK_))) return EBT_NOMATCH;} 41#define EXIT_ON_MISMATCH(_MATCH_,_MASK_) {if (!((info->_MATCH_ == _MATCH_)^!!(info->invflags & _MASK_))) return false; }
42 42
43static int 43static bool
44ebt_filter_vlan(const struct sk_buff *skb, 44ebt_filter_vlan(const struct sk_buff *skb,
45 const struct net_device *in, 45 const struct net_device *in,
46 const struct net_device *out, 46 const struct net_device *out,
@@ -58,7 +58,7 @@ ebt_filter_vlan(const struct sk_buff *skb,
58 58
59 fp = skb_header_pointer(skb, 0, sizeof(_frame), &_frame); 59 fp = skb_header_pointer(skb, 0, sizeof(_frame), &_frame);
60 if (fp == NULL) 60 if (fp == NULL)
61 return EBT_NOMATCH; 61 return false;
62 62
63 /* Tag Control Information (TCI) consists of the following elements: 63 /* Tag Control Information (TCI) consists of the following elements:
64 * - User_priority. The user_priority field is three bits in length, 64 * - User_priority. The user_priority field is three bits in length,
@@ -84,7 +84,7 @@ ebt_filter_vlan(const struct sk_buff *skb,
84 if (GET_BITMASK(EBT_VLAN_ENCAP)) 84 if (GET_BITMASK(EBT_VLAN_ENCAP))
85 EXIT_ON_MISMATCH(encap, EBT_VLAN_ENCAP); 85 EXIT_ON_MISMATCH(encap, EBT_VLAN_ENCAP);
86 86
87 return EBT_MATCH; 87 return true;
88} 88}
89 89
90static bool 90static bool