static void dn_nsp_data(struct sock *sk, struct sk_buff *skb)
{
int queued = 0;
unsigned short segnum;
struct dn_skb_cb *cb = DN_SKB_CB(skb);
struct dn_scp *scp = DN_SK(sk);
if (skb->len < 2)
goto out;
cb->segnum = segnum = le16_to_cpu(*(__le16 *)skb->data);
skb_pull(skb, 2);
if (seq_next(scp->numdat_rcv, segnum)) {
if (dn_queue_skb(sk, skb, SIGIO, &sk->sk_receive_queue) == 0) {
seq_add(&scp->numdat_rcv, 1);
queued = 1;
}
if ((scp->flowloc_sw == DN_SEND) && dn_congested(sk)) {
scp->flowloc_sw = DN_DONTSEND;
dn_nsp_send_link(sk, DN_DONTSEND, 0);
}
}
dn_nsp_send_data_ack(sk);
out:
if (!queued)
kfree_skb(skb);
}
static void dn_nsp_conn_conf(struct sock *sk, struct sk_buff *skb)
{
struct dn_skb_cb *cb = DN_SKB_CB(skb);
struct dn_scp *scp = DN_SK(sk);
unsigned char *ptr;
if (skb->len < 4)
goto out;
ptr = skb->data;
cb->services = *ptr++;
cb->info = *ptr++;
cb->segsize = le16_to_cpu(*(__le16 *)ptr);
if ((scp->state == DN_CI) || (scp->state == DN_CD)) {
scp->persist = 0;
scp->addrrem = cb->src_port;
sk->sk_state = TCP_ESTABLISHED;
scp->state = DN_RUN;
scp->services_rem = cb->services;
scp->info_rem = cb->info;
scp->segsize_rem = cb->segsize;
if ((scp->services_rem & NSP_FC_MASK) == NSP_FC_NONE)
scp->max_window = decnet_no_fc_max_cwnd;
if (skb->len > 0) {
u16 dlen = *skb->data;
if ((dlen <= 16) && (dlen <= skb->len)) {
scp->conndata_in.opt_optl = cpu_to_le16(dlen);
skb_copy_from_linear_data_offset(skb, 1,
scp->conndata_in.opt_data, dlen);
}
}
dn_nsp_send_link(sk, DN_NOCHANGE, 0);
if (!sock_flag(sk, SOCK_DEAD))
sk->sk_state_change(sk);
}
out:
kfree_skb(skb);
}
static void dn_nsp_conn_conf(struct sock *sk, struct sk_buff *skb)
{
struct dn_skb_cb *cb = DN_SKB_CB(skb);
struct dn_scp *scp = DN_SK(sk);
unsigned char *ptr;
if (skb->len < 4)
goto out;
ptr = skb->data;
cb->services = *ptr++;
cb->info = *ptr++;
cb->segsize = dn_ntohs(*(__u16 *)ptr);
if ((scp->state == DN_CI) || (scp->state == DN_CD)) {
scp->persist = 0;
scp->addrrem = cb->src_port;
sk->state = TCP_ESTABLISHED;
scp->state = DN_RUN;
scp->services_rem = cb->services;
scp->info_rem = cb->info;
scp->segsize_rem = cb->segsize;
if ((scp->services_rem & NSP_FC_MASK) == NSP_FC_NONE)
scp->max_window = decnet_no_fc_max_cwnd;
if (skb->len > 0) {
unsigned char dlen = *skb->data;
if ((dlen <= 16) && (dlen <= skb->len)) {
scp->conndata_in.opt_optl = dlen;
memcpy(scp->conndata_in.opt_data, skb->data + 1, dlen);
}
}
dn_nsp_send_link(sk, DN_NOCHANGE, 0);
if (!sk->dead)
sk->state_change(sk);
}
out:
kfree_skb(skb);
}