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); }