/* * Probably needs some error checks and locking, not sure... */ static int mpc_send_packet(struct sk_buff *skb, struct net_device *dev) { int retval; struct mpoa_client *mpc; struct ethhdr *eth; int i = 0; mpc = find_mpc_by_lec(dev); /* this should NEVER fail */ if(mpc == NULL) { printk("mpoa: (%s) mpc_send_packet: no MPC found\n", dev->name); goto non_ip; } eth = (struct ethhdr *)skb->data; if (eth->h_proto != htons(ETH_P_IP)) goto non_ip; /* Multi-Protocol Over ATM :-) */ while (i < mpc->number_of_mps_macs) { if (!compare_ether_addr(eth->h_dest, (mpc->mps_macs + i*ETH_ALEN))) if ( send_via_shortcut(skb, mpc) == 0 ) /* try shortcut */ return 0; /* success! */ i++; } non_ip: retval = mpc->old_hard_start_xmit(skb,dev); return retval; }
/* * Probably needs some error checks and locking, not sure... */ static netdev_tx_t mpc_send_packet(struct sk_buff *skb, struct net_device *dev) { struct mpoa_client *mpc; struct ethhdr *eth; int i = 0; mpc = find_mpc_by_lec(dev); /* this should NEVER fail */ if (mpc == NULL) { pr_info("(%s) no MPC found\n", dev->name); goto non_ip; } eth = (struct ethhdr *)skb->data; if (eth->h_proto != htons(ETH_P_IP)) goto non_ip; /* Multi-Protocol Over ATM :-) */ /* Weed out funny packets (e.g., AF_PACKET or raw). */ if (skb->len < ETH_HLEN + sizeof(struct iphdr)) goto non_ip; skb_set_network_header(skb, ETH_HLEN); if (skb->len < ETH_HLEN + ip_hdr(skb)->ihl * 4 || ip_hdr(skb)->ihl < 5) goto non_ip; while (i < mpc->number_of_mps_macs) { if (!compare_ether_addr(eth->h_dest, (mpc->mps_macs + i*ETH_ALEN))) if (send_via_shortcut(skb, mpc) == 0) /* try shortcut */ return NETDEV_TX_OK; i++; } non_ip: return mpc->old_ops->ndo_start_xmit(skb, dev); }