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sock_diag: align nlattr properly when needed 

I also fix the value of INET_DIAG_MAX. It's wrong since commit 8f840e47f1
which is only in net-next right now, thus I didn't make a separate patch.

Fixes: 8f840e47f1 ("sctp: add the sctp_diag.c file")
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nicolas Dichtel 2016-04-26 10:06:14 +02:00 committed by David S. Miller
parent 3c6f3714d6
commit 6ed46d1247
4 changed files with 13 additions and 7 deletions
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4
include/uapi/linux/inet_diag.h
View File

@ -115,9 +115,11 @@ enum {
INET_DIAG_SKV6ONLY,
INET_DIAG_LOCALS,
INET_DIAG_PEERS,
INET_DIAG_PAD,
__INET_DIAG_MAX,
};
#define INET_DIAG_MAX INET_DIAG_SKV6ONLY
#define INET_DIAG_MAX (__INET_DIAG_MAX - 1)
/* INET_DIAG_MEM */

2
net/core/sock_diag.c
View File

@ -120,7 +120,7 @@ static size_t sock_diag_nlmsg_size(void)
{
return NLMSG_ALIGN(sizeof(struct inet_diag_msg)
+ nla_total_size(sizeof(u8)) /* INET_DIAG_PROTOCOL */
+ nla_total_size(sizeof(struct tcp_info))); /* INET_DIAG_INFO */
+ nla_total_size_64bit(sizeof(struct tcp_info))); /* INET_DIAG_INFO */
}
static void sock_diag_broadcast_destroy_work(struct work_struct *work)

9
net/ipv4/inet_diag.c
View File

@ -220,8 +220,9 @@ int inet_sk_diag_fill(struct sock *sk, struct inet_connection_sock *icsk,
}
if ((ext & (1 << (INET_DIAG_INFO - 1))) && handler->idiag_info_size) {
attr = nla_reserve(skb, INET_DIAG_INFO,
handler->idiag_info_size);
attr = nla_reserve_64bit(skb, INET_DIAG_INFO,
handler->idiag_info_size,
INET_DIAG_PAD);
if (!attr)
goto errout;
@ -1078,7 +1079,9 @@ int inet_diag_handler_get_info(struct sk_buff *skb, struct sock *sk)
}
attr = handler->idiag_info_size
? nla_reserve(skb, INET_DIAG_INFO, handler->idiag_info_size)
? nla_reserve_64bit(skb, INET_DIAG_INFO,
handler->idiag_info_size,
INET_DIAG_PAD)
: NULL;
if (attr)
info = nla_data(attr);

5
net/sctp/sctp_diag.c
View File

@ -161,8 +161,9 @@ static int inet_sctp_diag_fill(struct sock *sk, struct sctp_association *asoc,
if (ext & (1 << (INET_DIAG_INFO - 1))) {
struct nlattr *attr;
attr = nla_reserve(skb, INET_DIAG_INFO,
sizeof(struct sctp_info));
attr = nla_reserve_64bit(skb, INET_DIAG_INFO,
sizeof(struct sctp_info),
INET_DIAG_PAD);
if (!attr)
goto errout;