diff options
| -rw-r--r-- | net/ipv6/addrconf.c | 28 |
1 files changed, 24 insertions, 4 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c index 445006ee452..c2c26fa0943 100644 --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -2860,6 +2860,11 @@ inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg) return inet6_addr_add(ifm->ifa_index, pfx, ifm->ifa_prefixlen); } +/* Maximum length of ifa_cacheinfo attributes */ +#define INET6_IFADDR_RTA_SPACE \ + RTA_SPACE(16) /* IFA_ADDRESS */ + \ + RTA_SPACE(sizeof(struct ifa_cacheinfo)) /* CACHEINFO */ + static int inet6_fill_ifaddr(struct sk_buff *skb, struct inet6_ifaddr *ifa, u32 pid, u32 seq, int event, unsigned int flags) { @@ -3092,7 +3097,7 @@ static int inet6_dump_ifacaddr(struct sk_buff *skb, struct netlink_callback *cb) static void inet6_ifa_notify(int event, struct inet6_ifaddr *ifa) { struct sk_buff *skb; - int size = NLMSG_SPACE(sizeof(struct ifaddrmsg)+128); + int size = NLMSG_SPACE(sizeof(struct ifaddrmsg) + INET6_IFADDR_RTA_SPACE); skb = alloc_skb(size, GFP_ATOMIC); if (!skb) { @@ -3142,6 +3147,17 @@ static void inline ipv6_store_devconf(struct ipv6_devconf *cnf, #endif } +/* Maximum length of ifinfomsg attributes */ +#define INET6_IFINFO_RTA_SPACE \ + RTA_SPACE(IFNAMSIZ) /* IFNAME */ + \ + RTA_SPACE(MAX_ADDR_LEN) /* ADDRESS */ + \ + RTA_SPACE(sizeof(u32)) /* MTU */ + \ + RTA_SPACE(sizeof(int)) /* LINK */ + \ + RTA_SPACE(0) /* PROTINFO */ + \ + RTA_SPACE(sizeof(u32)) /* FLAGS */ + \ + RTA_SPACE(sizeof(struct ifla_cacheinfo)) /* CACHEINFO */ + \ + RTA_SPACE(sizeof(__s32[DEVCONF_MAX])) /* CONF */ + static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev, u32 pid, u32 seq, int event, unsigned int flags) { @@ -3235,8 +3251,7 @@ static int inet6_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb) void inet6_ifinfo_notify(int event, struct inet6_dev *idev) { struct sk_buff *skb; - /* 128 bytes ?? */ - int size = NLMSG_SPACE(sizeof(struct ifinfomsg)+128); + int size = NLMSG_SPACE(sizeof(struct ifinfomsg) + INET6_IFINFO_RTA_SPACE); skb = alloc_skb(size, GFP_ATOMIC); if (!skb) { @@ -3252,6 +3267,11 @@ void inet6_ifinfo_notify(int event, struct inet6_dev *idev) netlink_broadcast(rtnl, skb, 0, RTNLGRP_IPV6_IFINFO, GFP_ATOMIC); } +/* Maximum length of prefix_cacheinfo attributes */ +#define INET6_PREFIX_RTA_SPACE \ + RTA_SPACE(sizeof(((struct prefix_info *)NULL)->prefix)) /* ADDRESS */ + \ + RTA_SPACE(sizeof(struct prefix_cacheinfo)) /* CACHEINFO */ + static int inet6_fill_prefix(struct sk_buff *skb, struct inet6_dev *idev, struct prefix_info *pinfo, u32 pid, u32 seq, int event, unsigned int flags) @@ -3296,7 +3316,7 @@ static void inet6_prefix_notify(int event, struct inet6_dev *idev, struct prefix_info *pinfo) { struct sk_buff *skb; - int size = NLMSG_SPACE(sizeof(struct prefixmsg)+128); + int size = NLMSG_SPACE(sizeof(struct prefixmsg) + INET6_PREFIX_RTA_SPACE); skb = alloc_skb(size, GFP_ATOMIC); if (!skb) { |