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[SCTP]: Bring MAX_BURST socket option into ietf API extension compliance

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Brings max_burst socket option set/get into line with the latest ietf
socket extensions api draft, while maintaining backwards
compatibility.

Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Neil Horman 2008-03-05 13:44:46 -08:00 committed by David S. Miller
parent 140ee9603c
commit 219b99a9ed
1 changed files with 62 additions and 15 deletions
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77
net/sctp/socket.c
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@ -2933,17 +2933,39 @@ static int sctp_setsockopt_maxburst(struct sock *sk,
char __user *optval,
int optlen)
{
struct sctp_assoc_value params;
struct sctp_sock *sp;
struct sctp_association *asoc;
int val;
int assoc_id = 0;
if (optlen != sizeof(int))
return -EINVAL;
if (get_user(val, (int __user *)optval))
return -EFAULT;
if (val < 0)
if (optlen < sizeof(int))
return -EINVAL;
sctp_sk(sk)->max_burst = val;
if (optlen == sizeof(int)) {
printk(KERN_WARNING
"SCTP: Use of int in max_burst socket option deprecated\n");
printk(KERN_WARNING
"SCTP: Use struct sctp_assoc_value instead\n");
if (copy_from_user(&val, optval, optlen))
return -EFAULT;
} else if (optlen == sizeof(struct sctp_assoc_value)) {
if (copy_from_user(&params, optval, optlen))
return -EFAULT;
val = params.assoc_value;
assoc_id = params.assoc_id;
} else
return -EINVAL;
sp = sctp_sk(sk);
if (assoc_id != 0) {
asoc = sctp_id2assoc(sk, assoc_id);
if (!asoc)
return -EINVAL;
asoc->max_burst = val;
} else
sp->max_burst = val;
return 0;
}
@ -5005,20 +5027,45 @@ static int sctp_getsockopt_maxburst(struct sock *sk, int len,
char __user *optval,
int __user *optlen)
{
int val;
struct sctp_assoc_value params;
struct sctp_sock *sp;
struct sctp_association *asoc;
if (len < sizeof(int))
return -EINVAL;
len = sizeof(int);
if (len == sizeof(int)) {
printk(KERN_WARNING
"SCTP: Use of int in max_burst socket option deprecated\n");
printk(KERN_WARNING
"SCTP: Use struct sctp_assoc_value instead\n");
params.assoc_id = 0;
} else if (len == sizeof (struct sctp_assoc_value)) {
if (copy_from_user(&params, optval, len))
return -EFAULT;
} else
return -EINVAL;
val = sctp_sk(sk)->max_burst;
if (put_user(len, optlen))
return -EFAULT;
if (copy_to_user(optval, &val, len))
return -EFAULT;
sp = sctp_sk(sk);
if (params.assoc_id != 0) {
asoc = sctp_id2assoc(sk, params.assoc_id);
if (!asoc)
return -EINVAL;
params.assoc_value = asoc->max_burst;
} else
params.assoc_value = sp->max_burst;
if (len == sizeof(int)) {
if (copy_to_user(optval, &params.assoc_value, len))
return -EFAULT;
} else {
if (copy_to_user(optval, &params, len))
return -EFAULT;
}
return 0;
return -ENOTSUPP;
}
static int sctp_getsockopt_hmac_ident(struct sock *sk, int len,