snmp: add align parameter to snmp_mib_init()

In preparation for 64bit snmp counters for some mibs,
add an 'align' parameter to snmp_mib_init(), instead
of assuming mibs only contain 'unsigned long' fields.

Callers can use __alignof__(type) to provide correct
alignment.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Herbert Xu <herbert@gondor.apana.org.au>
CC: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
CC: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org>
CC: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/net/ip.h b/include/net/ip.h
index d52f01180361b159b8c358b26c7a41dfc06f6180..3b524df7dddb04490af6cf01826ccfd3d900fb0b 100644 (file)
--- a/include/net/ip.h
+++ b/include/net/ip.h
@@ -178,7 +178,7 @@ extern struct ipv4_config ipv4_config;
 #define NET_ADD_STATS_USER(net, field, adnd) SNMP_ADD_STATS_USER((net)->mib.net_statistics, field, adnd)
 
 extern unsigned long snmp_fold_field(void __percpu *mib[], int offt);
-extern int snmp_mib_init(void __percpu *ptr[2], size_t mibsize);
+extern int snmp_mib_init(void __percpu *ptr[2], size_t mibsize, size_t align);
 extern void snmp_mib_free(void __percpu *ptr[2]);
 
 extern struct local_ports {

diff --git a/net/dccp/proto.c b/net/dccp/proto.c
index f79bcef5088ffce7ab0ec1335a0534b1453b96a7..096250d1323b9960c0a73d449c9b6589077e7015 100644 (file)
--- a/net/dccp/proto.c
+++ b/net/dccp/proto.c
@@ -1002,7 +1002,8 @@ EXPORT_SYMBOL_GPL(dccp_shutdown);
 static inline int dccp_mib_init(void)
 {
        return snmp_mib_init((void __percpu **)dccp_statistics,
-                            sizeof(struct dccp_mib));
+                            sizeof(struct dccp_mib),
+                            __alignof__(struct dccp_mib));
 }
 
 static inline void dccp_mib_exit(void)

diff --git a/net/ipv4/af_inet.c b/net/ipv4/af_inet.c
index b4c0969137cb6b790431e3ff441a768a8911b866..640db9b903306842e4f469fa7a92f330c283e2d1 100644 (file)
--- a/net/ipv4/af_inet.c
+++ b/net/ipv4/af_inet.c
@@ -1427,13 +1427,13 @@ unsigned long snmp_fold_field(void __percpu *mib[], int offt)
 }
 EXPORT_SYMBOL_GPL(snmp_fold_field);
 
-int snmp_mib_init(void __percpu *ptr[2], size_t mibsize)
+int snmp_mib_init(void __percpu *ptr[2], size_t mibsize, size_t align)
 {
        BUG_ON(ptr == NULL);
-       ptr[0] = __alloc_percpu(mibsize, __alignof__(unsigned long));
+       ptr[0] = __alloc_percpu(mibsize, align);
        if (!ptr[0])
                goto err0;
-       ptr[1] = __alloc_percpu(mibsize, __alignof__(unsigned long));
+       ptr[1] = __alloc_percpu(mibsize, align);
        if (!ptr[1])
                goto err1;
        return 0;
@@ -1490,25 +1490,32 @@ static const struct net_protocol icmp_protocol = {
 static __net_init int ipv4_mib_init_net(struct net *net)
 {
        if (snmp_mib_init((void __percpu **)net->mib.tcp_statistics,
-                         sizeof(struct tcp_mib)) < 0)
+                         sizeof(struct tcp_mib),
+                         __alignof__(struct tcp_mib)) < 0)
                goto err_tcp_mib;
        if (snmp_mib_init((void __percpu **)net->mib.ip_statistics,
-                         sizeof(struct ipstats_mib)) < 0)
+                         sizeof(struct ipstats_mib),
+                         __alignof__(struct ipstats_mib)) < 0)
                goto err_ip_mib;
        if (snmp_mib_init((void __percpu **)net->mib.net_statistics,
-                         sizeof(struct linux_mib)) < 0)
+                         sizeof(struct linux_mib),
+                         __alignof__(struct linux_mib)) < 0)
                goto err_net_mib;
        if (snmp_mib_init((void __percpu **)net->mib.udp_statistics,
-                         sizeof(struct udp_mib)) < 0)
+                         sizeof(struct udp_mib),
+                         __alignof__(struct udp_mib)) < 0)
                goto err_udp_mib;
        if (snmp_mib_init((void __percpu **)net->mib.udplite_statistics,
-                         sizeof(struct udp_mib)) < 0)
+                         sizeof(struct udp_mib),
+                         __alignof__(struct udp_mib)) < 0)
                goto err_udplite_mib;
        if (snmp_mib_init((void __percpu **)net->mib.icmp_statistics,
-                         sizeof(struct icmp_mib)) < 0)
+                         sizeof(struct icmp_mib),
+                         __alignof__(struct icmp_mib)) < 0)
                goto err_icmp_mib;
        if (snmp_mib_init((void __percpu **)net->mib.icmpmsg_statistics,
-                         sizeof(struct icmpmsg_mib)) < 0)
+                         sizeof(struct icmpmsg_mib),
+                         __alignof__(struct icmpmsg_mib)) < 0)
                goto err_icmpmsg_mib;
 
        tcp_mib_init(net);

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index b97bb1f3080838229d3fb4abdb9aa4682798affc..c20a7c260a8f1e18528cebf31695983a78038bc8 100644 (file)
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -284,13 +284,16 @@ static void addrconf_mod_timer(struct inet6_ifaddr *ifp,
 static int snmp6_alloc_dev(struct inet6_dev *idev)
 {
        if (snmp_mib_init((void __percpu **)idev->stats.ipv6,
-                         sizeof(struct ipstats_mib)) < 0)
+                         sizeof(struct ipstats_mib),
+                         __alignof__(struct ipstats_mib)) < 0)
                goto err_ip;
        if (snmp_mib_init((void __percpu **)idev->stats.icmpv6,
-                         sizeof(struct icmpv6_mib)) < 0)
+                         sizeof(struct icmpv6_mib),
+                         __alignof__(struct icmpv6_mib)) < 0)
                goto err_icmp;
        if (snmp_mib_init((void __percpu **)idev->stats.icmpv6msg,
-                         sizeof(struct icmpv6msg_mib)) < 0)
+                         sizeof(struct icmpv6msg_mib),
+                         __alignof__(struct icmpv6msg_mib)) < 0)
                goto err_icmpmsg;
 
        return 0;

diff --git a/net/ipv6/af_inet6.c b/net/ipv6/af_inet6.c
index 94b1b9c954bf65550e0a5de6cb6757217db1e9f0..e830cd4f9d0f05e2214457a40924551a38d1f347 100644 (file)
--- a/net/ipv6/af_inet6.c
+++ b/net/ipv6/af_inet6.c
@@ -971,19 +971,24 @@ static void ipv6_packet_cleanup(void)
 static int __net_init ipv6_init_mibs(struct net *net)
 {
        if (snmp_mib_init((void __percpu **)net->mib.udp_stats_in6,
-                         sizeof (struct udp_mib)) < 0)
+                         sizeof(struct udp_mib),
+                         __alignof__(struct udp_mib)) < 0)
                return -ENOMEM;
        if (snmp_mib_init((void __percpu **)net->mib.udplite_stats_in6,
-                         sizeof (struct udp_mib)) < 0)
+                         sizeof(struct udp_mib),
+                         __alignof__(struct udp_mib)) < 0)
                goto err_udplite_mib;
        if (snmp_mib_init((void __percpu **)net->mib.ipv6_statistics,
-                         sizeof(struct ipstats_mib)) < 0)
+                         sizeof(struct ipstats_mib),
+                         __alignof__(struct ipstats_mib)) < 0)
                goto err_ip_mib;
        if (snmp_mib_init((void __percpu **)net->mib.icmpv6_statistics,
-                         sizeof(struct icmpv6_mib)) < 0)
+                         sizeof(struct icmpv6_mib),
+                         __alignof__(struct icmpv6_mib)) < 0)
                goto err_icmp_mib;
        if (snmp_mib_init((void __percpu **)net->mib.icmpv6msg_statistics,
-                         sizeof(struct icmpv6msg_mib)) < 0)
+                         sizeof(struct icmpv6msg_mib),
+                         __alignof__(struct icmpv6msg_mib)) < 0)
                goto err_icmpmsg_mib;
        return 0;
 

diff --git a/net/sctp/protocol.c b/net/sctp/protocol.c
index a0e1a7fdebbffde08e710260fd08721ae6e176c6..c0e162aeb0bd722abe745a6bd041bb470c8df854 100644 (file)
--- a/net/sctp/protocol.c
+++ b/net/sctp/protocol.c
@@ -1002,7 +1002,8 @@ int sctp_register_pf(struct sctp_pf *pf, sa_family_t family)
 static inline int init_sctp_mibs(void)
 {
        return snmp_mib_init((void __percpu **)sctp_statistics,
-                            sizeof(struct sctp_mib));
+                            sizeof(struct sctp_mib),
+                            __alignof__(struct sctp_mib));
 }
 
 static inline void cleanup_sctp_mibs(void)

diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index 4bf27d90133336a1f862e6c7b28e4939397284c5..593c06be6b621db4ee93f3c1533b80ef0e678174 100644 (file)
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -2480,7 +2480,8 @@ static int __net_init xfrm_statistics_init(struct net *net)
        int rv;
 
        if (snmp_mib_init((void __percpu **)net->mib.xfrm_statistics,
-                         sizeof(struct linux_xfrm_mib)) < 0)
+                         sizeof(struct linux_xfrm_mib),
+                         __alignof__(struct linux_xfrm_mib)) < 0)
                return -ENOMEM;
        rv = xfrm_proc_init(net);
        if (rv < 0)