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sctp: translate network order to host order when users get a hmacid 

Commit ed5a377d87 ("sctp: translate host order to network order when
setting a hmacid") corrected the hmacid byte-order when setting a hmacid.
but the same issue also exists on getting a hmacid.

We fix it by changing hmacids to host order when users get them with
getsockopt.

Fixes: Commit ed5a377d87 ("sctp: translate host order to network order when setting a hmacid")
Signed-off-by: Xin Long <lucien.xin@gmail.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Xin Long 2016-02-03 23:33:30 +08:00 committed by David S. Miller
parent ca7f41a495
commit 7a84bd4664
1 changed files with 7 additions and 2 deletions
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9
net/sctp/socket.c
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@ -5538,6 +5538,7 @@ static int sctp_getsockopt_hmac_ident(struct sock *sk, int len,
struct sctp_hmac_algo_param *hmacs;
__u16 data_len = 0;
u32 num_idents;
int i;
if (!ep->auth_enable)
return -EACCES;
@ -5555,8 +5556,12 @@ static int sctp_getsockopt_hmac_ident(struct sock *sk, int len,
return -EFAULT;
if (put_user(num_idents, &p->shmac_num_idents))
return -EFAULT;
if (copy_to_user(p->shmac_idents, hmacs->hmac_ids, data_len))
return -EFAULT;
for (i = 0; i < num_idents; i++) {
__u16 hmacid = ntohs(hmacs->hmac_ids[i]);
if (copy_to_user(&p->shmac_idents[i], &hmacid, sizeof(__u16)))
return -EFAULT;
}
return 0;
}