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netlink: implement nla_get_in_addr and nla_get_in6_addr

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Those are counterparts to nla_put_in_addr and nla_put_in6_addr.

Signed-off-by: Jiri Benc <jbenc@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Benc 2015-03-29 16:59:26 +02:00 committed by David S. Miller
parent 930345ea63
commit 67b61f6c13
21 changed files with 72 additions and 62 deletions
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16
drivers/net/vxlan.c
View File

@ -171,11 +171,11 @@ static inline bool vxlan_addr_multicast(const union vxlan_addr *ipa)
static int vxlan_nla_get_addr(union vxlan_addr *ip, struct nlattr *nla)
{
if (nla_len(nla) >= sizeof(struct in6_addr)) {
nla_memcpy(&ip->sin6.sin6_addr, nla, sizeof(struct in6_addr));
ip->sin6.sin6_addr = nla_get_in6_addr(nla);
ip->sa.sa_family = AF_INET6;
return 0;
} else if (nla_len(nla) >= sizeof(__be32)) {
ip->sin.sin_addr.s_addr = nla_get_be32(nla);
ip->sin.sin_addr.s_addr = nla_get_in_addr(nla);
ip->sa.sa_family = AF_INET;
return 0;
} else {
@ -215,7 +215,7 @@ static int vxlan_nla_get_addr(union vxlan_addr *ip, struct nlattr *nla)
if (nla_len(nla) >= sizeof(struct in6_addr)) {
return -EAFNOSUPPORT;
} else if (nla_len(nla) >= sizeof(__be32)) {
ip->sin.sin_addr.s_addr = nla_get_be32(nla);
ip->sin.sin_addr.s_addr = nla_get_in_addr(nla);
ip->sa.sa_family = AF_INET;
return 0;
} else {
@ -2602,27 +2602,25 @@ static int vxlan_newlink(struct net *src_net, struct net_device *dev,
/* Unless IPv6 is explicitly requested, assume IPv4 */
dst->remote_ip.sa.sa_family = AF_INET;
if (data[IFLA_VXLAN_GROUP]) {
dst->remote_ip.sin.sin_addr.s_addr = nla_get_be32(data[IFLA_VXLAN_GROUP]);
dst->remote_ip.sin.sin_addr.s_addr = nla_get_in_addr(data[IFLA_VXLAN_GROUP]);
} else if (data[IFLA_VXLAN_GROUP6]) {
if (!IS_ENABLED(CONFIG_IPV6))
return -EPFNOSUPPORT;
nla_memcpy(&dst->remote_ip.sin6.sin6_addr, data[IFLA_VXLAN_GROUP6],
sizeof(struct in6_addr));
dst->remote_ip.sin6.sin6_addr = nla_get_in6_addr(data[IFLA_VXLAN_GROUP6]);
dst->remote_ip.sa.sa_family = AF_INET6;
use_ipv6 = true;
}
if (data[IFLA_VXLAN_LOCAL]) {
vxlan->saddr.sin.sin_addr.s_addr = nla_get_be32(data[IFLA_VXLAN_LOCAL]);
vxlan->saddr.sin.sin_addr.s_addr = nla_get_in_addr(data[IFLA_VXLAN_LOCAL]);
vxlan->saddr.sa.sa_family = AF_INET;
} else if (data[IFLA_VXLAN_LOCAL6]) {
if (!IS_ENABLED(CONFIG_IPV6))
return -EPFNOSUPPORT;
/* TODO: respect scope id */
nla_memcpy(&vxlan->saddr.sin6.sin6_addr, data[IFLA_VXLAN_LOCAL6],
sizeof(struct in6_addr));
vxlan->saddr.sin6.sin6_addr = nla_get_in6_addr(data[IFLA_VXLAN_LOCAL6]);
vxlan->saddr.sa.sa_family = AF_INET6;
use_ipv6 = true;
}

21
include/net/netlink.h
View File

@ -1127,6 +1127,27 @@ static inline unsigned long nla_get_msecs(const struct nlattr *nla)
return msecs_to_jiffies((unsigned long) msecs);
}
/**
* nla_get_in_addr - return payload of IPv4 address attribute
* @nla: IPv4 address netlink attribute
*/
static inline __be32 nla_get_in_addr(const struct nlattr *nla)
{
return *(__be32 *) nla_data(nla);
}
/**
* nla_get_in6_addr - return payload of IPv6 address attribute
* @nla: IPv6 address netlink attribute
*/
static inline struct in6_addr nla_get_in6_addr(const struct nlattr *nla)
{
struct in6_addr tmp;
nla_memcpy(&tmp, nla, sizeof(tmp));
return tmp;
}
/**
* nla_nest_start - Start a new level of nested attributes
* @skb: socket buffer to add attributes to

10
net/ipv4/devinet.c
View File

@ -593,7 +593,7 @@ static int inet_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh)
for (ifap = &in_dev->ifa_list; (ifa = *ifap) != NULL;
ifap = &ifa->ifa_next) {
if (tb[IFA_LOCAL] &&
ifa->ifa_local != nla_get_be32(tb[IFA_LOCAL]))
ifa->ifa_local != nla_get_in_addr(tb[IFA_LOCAL]))
continue;
if (tb[IFA_LABEL] && nla_strcmp(tb[IFA_LABEL], ifa->ifa_label))
@ -601,7 +601,7 @@ static int inet_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh)
if (tb[IFA_ADDRESS] &&
(ifm->ifa_prefixlen != ifa->ifa_prefixlen ||
!inet_ifa_match(nla_get_be32(tb[IFA_ADDRESS]), ifa)))
!inet_ifa_match(nla_get_in_addr(tb[IFA_ADDRESS]), ifa)))
continue;
if (ipv4_is_multicast(ifa->ifa_address))
@ -791,11 +791,11 @@ static struct in_ifaddr *rtm_to_ifaddr(struct net *net, struct nlmsghdr *nlh,
ifa->ifa_scope = ifm->ifa_scope;
ifa->ifa_dev = in_dev;
ifa->ifa_local = nla_get_be32(tb[IFA_LOCAL]);
ifa->ifa_address = nla_get_be32(tb[IFA_ADDRESS]);
ifa->ifa_local = nla_get_in_addr(tb[IFA_LOCAL]);
ifa->ifa_address = nla_get_in_addr(tb[IFA_ADDRESS]);
if (tb[IFA_BROADCAST])
ifa->ifa_broadcast = nla_get_be32(tb[IFA_BROADCAST]);
ifa->ifa_broadcast = nla_get_in_addr(tb[IFA_BROADCAST]);
if (tb[IFA_LABEL])
nla_strlcpy(ifa->ifa_label, tb[IFA_LABEL], IFNAMSIZ);

8
net/ipv4/fib_rules.c
View File

@ -194,10 +194,10 @@ static int fib4_rule_configure(struct fib_rule *rule, struct sk_buff *skb,
}
if (frh->src_len)
rule4->src = nla_get_be32(tb[FRA_SRC]);
rule4->src = nla_get_in_addr(tb[FRA_SRC]);
if (frh->dst_len)
rule4->dst = nla_get_be32(tb[FRA_DST]);
rule4->dst = nla_get_in_addr(tb[FRA_DST]);
#ifdef CONFIG_IP_ROUTE_CLASSID
if (tb[FRA_FLOW]) {
@ -260,10 +260,10 @@ static int fib4_rule_compare(struct fib_rule *rule, struct fib_rule_hdr *frh,
return 0;
#endif
if (frh->src_len && (rule4->src != nla_get_be32(tb[FRA_SRC])))
if (frh->src_len && (rule4->src != nla_get_in_addr(tb[FRA_SRC])))
return 0;
if (frh->dst_len && (rule4->dst != nla_get_be32(tb[FRA_DST])))
if (frh->dst_len && (rule4->dst != nla_get_in_addr(tb[FRA_DST])))
return 0;
return 1;

4
net/ipv4/fib_semantics.c
View File

@ -468,7 +468,7 @@ static int fib_get_nhs(struct fib_info *fi, struct rtnexthop *rtnh,
struct nlattr *nla, *attrs = rtnh_attrs(rtnh);
nla = nla_find(attrs, attrlen, RTA_GATEWAY);
nexthop_nh->nh_gw = nla ? nla_get_be32(nla) : 0;
nexthop_nh->nh_gw = nla ? nla_get_in_addr(nla) : 0;
#ifdef CONFIG_IP_ROUTE_CLASSID
nla = nla_find(attrs, attrlen, RTA_FLOW);
nexthop_nh->nh_tclassid = nla ? nla_get_u32(nla) : 0;
@ -523,7 +523,7 @@ int fib_nh_match(struct fib_config *cfg, struct fib_info *fi)
struct nlattr *nla, *attrs = rtnh_attrs(rtnh);
nla = nla_find(attrs, attrlen, RTA_GATEWAY);
if (nla && nla_get_be32(nla) != nh->nh_gw)
if (nla && nla_get_in_addr(nla) != nh->nh_gw)
return 1;
#ifdef CONFIG_IP_ROUTE_CLASSID
nla = nla_find(attrs, attrlen, RTA_FLOW);

4
net/ipv4/ip_gre.c
View File

@ -621,10 +621,10 @@ static void ipgre_netlink_parms(struct nlattr *data[], struct nlattr *tb[],
parms->o_key = nla_get_be32(data[IFLA_GRE_OKEY]);
if (data[IFLA_GRE_LOCAL])
parms->iph.saddr = nla_get_be32(data[IFLA_GRE_LOCAL]);
parms->iph.saddr = nla_get_in_addr(data[IFLA_GRE_LOCAL]);
if (data[IFLA_GRE_REMOTE])
parms->iph.daddr = nla_get_be32(data[IFLA_GRE_REMOTE]);
parms->iph.daddr = nla_get_in_addr(data[IFLA_GRE_REMOTE]);
if (data[IFLA_GRE_TTL])
parms->iph.ttl = nla_get_u8(data[IFLA_GRE_TTL]);

4
net/ipv4/ip_vti.c
View File

@ -456,10 +456,10 @@ static void vti_netlink_parms(struct nlattr *data[],
parms->o_key = nla_get_be32(data[IFLA_VTI_OKEY]);
if (data[IFLA_VTI_LOCAL])
parms->iph.saddr = nla_get_be32(data[IFLA_VTI_LOCAL]);
parms->iph.saddr = nla_get_in_addr(data[IFLA_VTI_LOCAL]);
if (data[IFLA_VTI_REMOTE])
parms->iph.daddr = nla_get_be32(data[IFLA_VTI_REMOTE]);
parms->iph.daddr = nla_get_in_addr(data[IFLA_VTI_REMOTE]);
}

4
net/ipv4/ipip.c
View File

@ -325,10 +325,10 @@ static void ipip_netlink_parms(struct nlattr *data[],
parms->link = nla_get_u32(data[IFLA_IPTUN_LINK]);
if (data[IFLA_IPTUN_LOCAL])
parms->iph.saddr = nla_get_be32(data[IFLA_IPTUN_LOCAL]);
parms->iph.saddr = nla_get_in_addr(data[IFLA_IPTUN_LOCAL]);
if (data[IFLA_IPTUN_REMOTE])
parms->iph.daddr = nla_get_be32(data[IFLA_IPTUN_REMOTE]);
parms->iph.daddr = nla_get_in_addr(data[IFLA_IPTUN_REMOTE]);
if (data[IFLA_IPTUN_TTL]) {
parms->iph.ttl = nla_get_u8(data[IFLA_IPTUN_TTL]);

4
net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c
View File

@ -342,8 +342,8 @@ static int ipv4_nlattr_to_tuple(struct nlattr *tb[],
if (!tb[CTA_IP_V4_SRC] || !tb[CTA_IP_V4_DST])
return -EINVAL;
t->src.u3.ip = nla_get_be32(tb[CTA_IP_V4_SRC]);
t->dst.u3.ip = nla_get_be32(tb[CTA_IP_V4_DST]);
t->src.u3.ip = nla_get_in_addr(tb[CTA_IP_V4_SRC]);
t->dst.u3.ip = nla_get_in_addr(tb[CTA_IP_V4_DST]);
return 0;
}

4
net/ipv4/route.c
View File

@ -2436,8 +2436,8 @@ static int inet_rtm_getroute(struct sk_buff *in_skb, struct nlmsghdr *nlh)
ip_hdr(skb)->protocol = IPPROTO_ICMP;
skb_reserve(skb, MAX_HEADER + sizeof(struct iphdr));
src = tb[RTA_SRC] ? nla_get_be32(tb[RTA_SRC]) : 0;
dst = tb[RTA_DST] ? nla_get_be32(tb[RTA_DST]) : 0;
src = tb[RTA_SRC] ? nla_get_in_addr(tb[RTA_SRC]) : 0;
dst = tb[RTA_DST] ? nla_get_in_addr(tb[RTA_DST]) : 0;
iif = tb[RTA_IIF] ? nla_get_u32(tb[RTA_IIF]) : 0;
mark = tb[RTA_MARK] ? nla_get_u32(tb[RTA_MARK]) : 0;

4
net/ipv4/tcp_metrics.c
View File

@ -948,7 +948,7 @@ static int __parse_nl_addr(struct genl_info *info, struct inetpeer_addr *addr,
a = info->attrs[v4];
if (a) {
addr->family = AF_INET;
addr->addr.a4 = nla_get_be32(a);
addr->addr.a4 = nla_get_in_addr(a);
if (hash)
*hash = (__force unsigned int) addr->addr.a4;
return 0;
@ -958,7 +958,7 @@ static int __parse_nl_addr(struct genl_info *info, struct inetpeer_addr *addr,
if (nla_len(a) != sizeof(struct in6_addr))
return -EINVAL;
addr->family = AF_INET6;
memcpy(addr->addr.a6, nla_data(a), sizeof(addr->addr.a6));
addr->addr.in6 = nla_get_in6_addr(a);
if (hash)
*hash = ipv6_addr_hash(&addr->addr.in6);
return 0;

6
net/ipv6/fib6_rules.c
View File

@ -199,12 +199,10 @@ static int fib6_rule_configure(struct fib_rule *rule, struct sk_buff *skb,
}
if (frh->src_len)
nla_memcpy(&rule6->src.addr, tb[FRA_SRC],
sizeof(struct in6_addr));
rule6->src.addr = nla_get_in6_addr(tb[FRA_SRC]);
if (frh->dst_len)
nla_memcpy(&rule6->dst.addr, tb[FRA_DST],
sizeof(struct in6_addr));
rule6->dst.addr = nla_get_in6_addr(tb[FRA_DST]);
rule6->src.plen = frh->src_len;
rule6->dst.plen = frh->dst_len;

6
net/ipv6/ip6_gre.c
View File

@ -1412,7 +1412,7 @@ static int ip6gre_tap_validate(struct nlattr *tb[], struct nlattr *data[])
goto out;
if (data[IFLA_GRE_REMOTE]) {
nla_memcpy(&daddr, data[IFLA_GRE_REMOTE], sizeof(struct in6_addr));
daddr = nla_get_in6_addr(data[IFLA_GRE_REMOTE]);
if (ipv6_addr_any(&daddr))
return -EINVAL;
}
@ -1446,10 +1446,10 @@ static void ip6gre_netlink_parms(struct nlattr *data[],
parms->o_key = nla_get_be32(data[IFLA_GRE_OKEY]);
if (data[IFLA_GRE_LOCAL])
nla_memcpy(&parms->laddr, data[IFLA_GRE_LOCAL], sizeof(struct in6_addr));
parms->laddr = nla_get_in6_addr(data[IFLA_GRE_LOCAL]);
if (data[IFLA_GRE_REMOTE])
nla_memcpy(&parms->raddr, data[IFLA_GRE_REMOTE], sizeof(struct in6_addr));
parms->raddr = nla_get_in6_addr(data[IFLA_GRE_REMOTE]);
if (data[IFLA_GRE_TTL])
parms->hop_limit = nla_get_u8(data[IFLA_GRE_TTL]);

6
net/ipv6/ip6_tunnel.c
View File

@ -1640,12 +1640,10 @@ static void ip6_tnl_netlink_parms(struct nlattr *data[],
parms->link = nla_get_u32(data[IFLA_IPTUN_LINK]);
if (data[IFLA_IPTUN_LOCAL])
nla_memcpy(&parms->laddr, data[IFLA_IPTUN_LOCAL],
sizeof(struct in6_addr));
parms->laddr = nla_get_in6_addr(data[IFLA_IPTUN_LOCAL]);
if (data[IFLA_IPTUN_REMOTE])
nla_memcpy(&parms->raddr, data[IFLA_IPTUN_REMOTE],
sizeof(struct in6_addr));
parms->raddr = nla_get_in6_addr(data[IFLA_IPTUN_REMOTE]);
if (data[IFLA_IPTUN_TTL])
parms->hop_limit = nla_get_u8(data[IFLA_IPTUN_TTL]);

6
net/ipv6/ip6_vti.c
View File

@ -897,12 +897,10 @@ static void vti6_netlink_parms(struct nlattr *data[],
parms->link = nla_get_u32(data[IFLA_VTI_LINK]);
if (data[IFLA_VTI_LOCAL])
nla_memcpy(&parms->laddr, data[IFLA_VTI_LOCAL],
sizeof(struct in6_addr));
parms->laddr = nla_get_in6_addr(data[IFLA_VTI_LOCAL]);
if (data[IFLA_VTI_REMOTE])
nla_memcpy(&parms->raddr, data[IFLA_VTI_REMOTE],
sizeof(struct in6_addr));
parms->raddr = nla_get_in6_addr(data[IFLA_VTI_REMOTE]);
if (data[IFLA_VTI_IKEY])
parms->i_key = nla_get_be32(data[IFLA_VTI_IKEY]);

6
net/ipv6/netfilter/nf_conntrack_l3proto_ipv6.c
View File

@ -310,10 +310,8 @@ static int ipv6_nlattr_to_tuple(struct nlattr *tb[],
if (!tb[CTA_IP_V6_SRC] || !tb[CTA_IP_V6_DST])
return -EINVAL;
memcpy(&t->src.u3.ip6, nla_data(tb[CTA_IP_V6_SRC]),
sizeof(u_int32_t) * 4);
memcpy(&t->dst.u3.ip6, nla_data(tb[CTA_IP_V6_DST]),
sizeof(u_int32_t) * 4);
t->src.u3.in6 = nla_get_in6_addr(tb[CTA_IP_V6_SRC]);
t->dst.u3.in6 = nla_get_in6_addr(tb[CTA_IP_V6_DST]);
return 0;
}

6
net/ipv6/route.c
View File

@ -2438,7 +2438,7 @@ static int rtm_to_fib6_config(struct sk_buff *skb, struct nlmsghdr *nlh,
cfg->fc_nlinfo.nl_net = sock_net(skb->sk);
if (tb[RTA_GATEWAY]) {
nla_memcpy(&cfg->fc_gateway, tb[RTA_GATEWAY], 16);
cfg->fc_gateway = nla_get_in6_addr(tb[RTA_GATEWAY]);
cfg->fc_flags |= RTF_GATEWAY;
}
@ -2461,7 +2461,7 @@ static int rtm_to_fib6_config(struct sk_buff *skb, struct nlmsghdr *nlh,
}
if (tb[RTA_PREFSRC])
nla_memcpy(&cfg->fc_prefsrc, tb[RTA_PREFSRC], 16);
cfg->fc_prefsrc = nla_get_in6_addr(tb[RTA_PREFSRC]);
if (tb[RTA_OIF])
cfg->fc_ifindex = nla_get_u32(tb[RTA_OIF]);
@ -2519,7 +2519,7 @@ static int ip6_route_multipath(struct fib6_config *cfg, int add)
nla = nla_find(attrs, attrlen, RTA_GATEWAY);
if (nla) {
nla_memcpy(&r_cfg.fc_gateway, nla, 16);
r_cfg.fc_gateway = nla_get_in6_addr(nla);
r_cfg.fc_flags |= RTF_GATEWAY;
}
}

3
net/ipv6/sit.c
View File

@ -1530,8 +1530,7 @@ static bool ipip6_netlink_6rd_parms(struct nlattr *data[],
if (data[IFLA_IPTUN_6RD_PREFIX]) {
ret = true;
nla_memcpy(&ip6rd->prefix, data[IFLA_IPTUN_6RD_PREFIX],
sizeof(struct in6_addr));
ip6rd->prefix = nla_get_in6_addr(data[IFLA_IPTUN_6RD_PREFIX]);
}
if (data[IFLA_IPTUN_6RD_RELAY_PREFIX]) {

4
net/l2tp/l2tp_netlink.c
View File

@ -205,9 +205,9 @@ static int l2tp_nl_cmd_tunnel_create(struct sk_buff *skb, struct genl_info *info
#endif
if (info->attrs[L2TP_ATTR_IP_SADDR] &&
info->attrs[L2TP_ATTR_IP_DADDR]) {
cfg.local_ip.s_addr = nla_get_be32(
cfg.local_ip.s_addr = nla_get_in_addr(
info->attrs[L2TP_ATTR_IP_SADDR]);
cfg.peer_ip.s_addr = nla_get_be32(
cfg.peer_ip.s_addr = nla_get_in_addr(
info->attrs[L2TP_ATTR_IP_DADDR]);
} else {
ret = -EINVAL;

4
net/openvswitch/flow_netlink.c
View File

@ -535,11 +535,11 @@ static int ipv4_tun_from_nlattr(const struct nlattr *attr,
break;
case OVS_TUNNEL_KEY_ATTR_IPV4_SRC:
SW_FLOW_KEY_PUT(match, tun_key.ipv4_src,
nla_get_be32(a), is_mask);
nla_get_in_addr(a), is_mask);
break;
case OVS_TUNNEL_KEY_ATTR_IPV4_DST:
SW_FLOW_KEY_PUT(match, tun_key.ipv4_dst,
nla_get_be32(a), is_mask);
nla_get_in_addr(a), is_mask);
break;
case OVS_TUNNEL_KEY_ATTR_TOS:
SW_FLOW_KEY_PUT(match, tun_key.ipv4_tos,

4
net/wireless/nl80211.c
View File

@ -8993,8 +8993,8 @@ static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev,
cfg = kzalloc(size, GFP_KERNEL);
if (!cfg)
return -ENOMEM;
cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]);
cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]);
memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]),
ETH_ALEN);
if (tb[NL80211_WOWLAN_TCP_SRC_PORT])