static inline int serval_ip_local_out(struct sk_buff *skb)
{
int err;
#if defined(OS_LINUX_KERNEL)
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25))
err = ip_local_out(skb);
#else
struct iphdr *iph = ip_hdr(skb);
iph->tot_len = htons(skb->len);
ip_send_check(iph);
err = NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, skb, NULL, skb->dst->dev,
dst_output);
#endif
#else /* OS_USER */
/* Calculate checksum */
ip_send_check(ip_hdr(skb));
err = dev_queue_xmit(skb);
#endif
if (err < 0) {
LOG_ERR("packet_xmit failed err=%d\n", err);
}
return err;
}
/* Transmit routine used by generic_netmap_txsync(). Returns 0 on success
and -1 on error (which may be packet drops or other errors). */
int generic_xmit_frame(struct ifnet *ifp, struct mbuf *m,
void *addr, u_int len, u_int ring_nr)
{
netdev_tx_t ret;
/* Empty the sk_buff. */
if (unlikely(skb_headroom(m)))
skb_push(m, skb_headroom(m));
skb_trim(m, 0);
/* TODO Support the slot flags (NS_MOREFRAG, NS_INDIRECT). */
skb_copy_to_linear_data(m, addr, len); // skb_store_bits(m, 0, addr, len);
skb_put(m, len);
NM_ATOMIC_INC(&m->users);
m->dev = ifp;
/* Tell generic_ndo_start_xmit() to pass this mbuf to the driver. */
m->priority = NM_MAGIC_PRIORITY_TX;
skb_set_queue_mapping(m, ring_nr);
ret = dev_queue_xmit(m);
if (likely(ret == NET_XMIT_SUCCESS)) {
return 0;
}
if (unlikely(ret != NET_XMIT_DROP)) {
/* If something goes wrong in the TX path, there is nothing
intelligent we can do (for now) apart from error reporting. */
RD(5, "dev_queue_xmit failed: HARD ERROR %d", ret);
}
return -1;
}
void x25_send_frame(struct sk_buff *skb, struct x25_neigh *nb)
{
unsigned char *dptr;
skb_reset_network_header(skb);
switch (nb->dev->type) {
case ARPHRD_X25:
dptr = skb_push(skb, 1);
*dptr = 0x00;
break;
#if defined(CONFIG_LLC) || defined(CONFIG_LLC_MODULE)
case ARPHRD_ETHER:
kfree_skb(skb);
return;
#endif
default:
kfree_skb(skb);
return;
}
skb->protocol = htons(ETH_P_X25);
skb->dev = nb->dev;
dev_queue_xmit(skb);
}
static void cisco_keepalive_send(struct net_device *dev, u32 type,
u32 par1, u32 par2)
{
struct sk_buff *skb;
cisco_packet *data;
skb = dev_alloc_skb(sizeof(hdlc_header) + sizeof(cisco_packet));
if (!skb) {
printk(KERN_WARNING
"%s: Memory squeeze on cisco_keepalive_send()\n",
dev->name);
return;
}
skb_reserve(skb, 4);
cisco_hard_header(skb, dev, CISCO_KEEPALIVE, NULL, NULL, 0);
data = (cisco_packet*)skb->tail;
data->type = htonl(type);
data->par1 = htonl(par1);
data->par2 = htonl(par2);
data->rel = 0xFFFF;
/* we will need do_div here if 1000 % HZ != 0 */
data->time = htonl((jiffies - INITIAL_JIFFIES) * (1000 / HZ));
skb_put(skb, sizeof(cisco_packet));
skb->priority = TC_PRIO_CONTROL;
skb->dev = dev;
skb->nh.raw = skb->data;
dev_queue_xmit(skb);
}
static void
alb_send_learning_packets(struct slave *slave, u8 mac_addr[])
{
struct sk_buff *skb = NULL;
struct learning_pkt pkt;
char *data = NULL;
int i;
unsigned int size = sizeof(struct learning_pkt);
memset(&pkt, 0, size);
memcpy(pkt.mac_dst, mac_addr, ETH_ALEN);
memcpy(pkt.mac_src, mac_addr, ETH_ALEN);
pkt.type = __constant_htons(ETH_P_LOOP);
for (i=0; i < MAX_LP_RETRY; i++) {
skb = NULL;
skb = dev_alloc_skb(size);
if (!skb) {
return;
}
data = skb_put(skb, size);
memcpy(data, &pkt, size);
skb->mac.raw = data;
skb->nh.raw = data + ETH_HLEN;
skb->protocol = pkt.type;
skb->priority = TC_PRIO_CONTROL;
skb->dev = slave->dev;
dev_queue_xmit(skb);
}
}
static netdev_tx_t dsa_slave_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct dsa_slave_priv *p = netdev_priv(dev);
struct sk_buff *nskb;
dev->stats.tx_packets++;
dev->stats.tx_bytes += skb->len;
/* Transmit function may have to reallocate the original SKB */
nskb = p->xmit(skb, dev);
if (!nskb)
return NETDEV_TX_OK;
/* SKB for netpoll still need to be mangled with the protocol-specific
* tag to be successfully transmitted
*/
if (unlikely(netpoll_tx_running(dev)))
return dsa_netpoll_send_skb(p, nskb);
/* Queue the SKB for transmission on the parent interface, but
* do not modify its EtherType
*/
nskb->dev = p->parent->dst->master_netdev;
dev_queue_xmit(nskb);
return NETDEV_TX_OK;
}
/* TODO: only support linux for now */
void wlan_offchan_send_data_frame(struct ieee80211_node *ni, struct net_device *netdev)
{
#if defined(LINUX) || defined(__linux__)
struct ieee80211vap *vap = ni->ni_vap;
struct ieee80211com *ic = ni->ni_ic;
wbuf_t wbuf;
struct ieee80211_qosframe *qwh;
const u_int8_t dst[6] = {0x00, 0x02, 0x03, 0x04, 0x05, 0x06};
struct sk_buff *skb;
wbuf = wbuf_alloc(ic->ic_osdev, WBUF_TX_DATA, 1000);
if (wbuf == NULL)
{
return ;
}
ieee80211_prepare_qosnulldata(ni, wbuf, WME_AC_VO);
qwh = (struct ieee80211_qosframe *)wbuf_header(wbuf);
ieee80211_send_setup(vap, ni, (struct ieee80211_frame *)qwh,
IEEE80211_FC0_TYPE_DATA,
vap->iv_myaddr, /* SA */
dst, /* DA */
ni->ni_bssid);
wbuf_set_pktlen(wbuf, 1000);
/* force with NONPAUSE_TID */
wbuf_set_tid(wbuf, OFFCHAN_EXT_TID_NONPAUSE);
skb = (struct sk_buff *)wbuf;
skb->dev = netdev;
dev_queue_xmit(skb);
#endif
}
netdev_tx_t
vhost_dev_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct vhost_priv *vp;
struct vr_interface *vifp;
struct net_device *pdev;
vp = netdev_priv(dev);
vifp = vp->vp_vifp;
if (!vifp) {
if (!(pdev = vp->vp_phys_dev)) {
(void)__sync_fetch_and_add(&dev->stats.tx_dropped, 1);
kfree_skb(skb);
return NETDEV_TX_OK;
}
skb->dev = pdev;
dev_queue_xmit(skb);
} else {
linux_to_vr(vifp, skb);
}
(void)__sync_fetch_and_add(&dev->stats.tx_packets, 1);
(void)__sync_fetch_and_add(&dev->stats.tx_bytes, skb->len);
return NETDEV_TX_OK;
}
int llc_sap_action_send_test_r(struct llc_sap *sap, struct sk_buff *skb)
{
u8 mac_da[ETH_ALEN], mac_sa[ETH_ALEN], dsap;
struct sk_buff *nskb;
int rc = 1;
u32 data_size;
llc_pdu_decode_sa(skb, mac_da);
llc_pdu_decode_da(skb, mac_sa);
llc_pdu_decode_ssap(skb, &dsap);
/* The test request command is type U (llc_len = 3) */
data_size = ntohs(eth_hdr(skb)->h_proto) - 3;
nskb = llc_alloc_frame(NULL, skb->dev, LLC_PDU_TYPE_U, data_size);
if (!nskb)
goto out;
llc_pdu_header_init(nskb, LLC_PDU_TYPE_U, sap->laddr.lsap, dsap,
LLC_PDU_RSP);
llc_pdu_init_as_test_rsp(nskb, skb);
rc = llc_mac_hdr_init(nskb, mac_sa, mac_da);
if (likely(!rc))
rc = dev_queue_xmit(nskb);
out:
return rc;
}
void x25_terminate_link(struct x25_neigh *nb)
{
struct sk_buff *skb;
unsigned char *ptr;
#if defined(CONFIG_LLC) || defined(CONFIG_LLC_MODULE)
if (nb->dev->type == ARPHRD_ETHER)
return;
#endif
if (nb->dev->type != ARPHRD_X25)
return;
skb = alloc_skb(1, GFP_ATOMIC);
if (!skb) {
printk(KERN_ERR "x25_dev: out of memory\n");
return;
}
ptr = skb_put(skb, 1);
*ptr = X25_IFACE_DISCONNECT;
skb->protocol = htons(ETH_P_X25);
skb->dev = nb->dev;
dev_queue_xmit(skb);
}
static netdev_tx_t vlan_dev_hwaccel_hard_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
int i = skb_get_queue_mapping(skb);
struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
u16 vlan_tci;
unsigned int len;
int ret;
vlan_tci = vlan_dev_info(dev)->vlan_id;
vlan_tci |= vlan_dev_get_egress_qos_mask(dev, skb);
skb = __vlan_hwaccel_put_tag(skb, vlan_tci);
skb->dev = vlan_dev_info(dev)->real_dev;
len = skb->len;
ret = dev_queue_xmit(skb);
if (likely(ret == NET_XMIT_SUCCESS || ret == NET_XMIT_CN)) {
txq->tx_packets++;
txq->tx_bytes += len;
} else
txq->tx_dropped++;
return ret;
}
static void cisco_keepalive_send(struct net_device *dev, u32 type,
__be32 par1, __be32 par2)
{
struct sk_buff *skb;
struct cisco_packet *data;
skb = dev_alloc_skb(sizeof(struct hdlc_header) +
sizeof(struct cisco_packet));
if (!skb) {
netdev_warn(dev, "Memory squeeze on cisco_keepalive_send()\n");
return;
}
skb_reserve(skb, 4);
cisco_hard_header(skb, dev, CISCO_KEEPALIVE, NULL, NULL, 0);
data = (struct cisco_packet*)(skb->data + 4);
data->type = htonl(type);
data->par1 = par1;
data->par2 = par2;
data->rel = cpu_to_be16(0xFFFF);
data->time = htonl((jiffies - INITIAL_JIFFIES) * (1000 / HZ));
skb_put(skb, sizeof(struct cisco_packet));
skb->priority = TC_PRIO_CONTROL;
skb->dev = dev;
skb_reset_network_header(skb);
dev_queue_xmit(skb);
}
static int __dev_queue_push_xmit(struct sk_buff *skb)
{
skb_push(skb, ETH_HLEN);
dev_queue_xmit(skb);
return 0;
}
static void cisco_keepalive_send(hdlc_device *hdlc, u32 type,
u32 par1, u32 par2)
{
struct sk_buff *skb;
cisco_packet *data;
skb = dev_alloc_skb(sizeof(hdlc_header)+sizeof(cisco_packet));
if (!skb) {
printk(KERN_WARNING "%s: Memory squeeze on cisco_keepalive_send()\n",
hdlc_to_name(hdlc));
return;
}
skb_reserve(skb, 4);
cisco_hard_header(skb, hdlc_to_dev(hdlc), CISCO_KEEPALIVE,
NULL, NULL, 0);
data = (cisco_packet*)skb->tail;
data->type = htonl(type);
data->par1 = htonl(par1);
data->par2 = htonl(par2);
data->rel = 0xFFFF;
data->time = htonl(jiffies * 1000 / HZ);
skb_put(skb, sizeof(cisco_packet));
skb->priority = TC_PRIO_CONTROL;
skb->dev = hdlc_to_dev(hdlc);
dev_queue_xmit(skb);
}
/**
* tipc_l2_send_msg - send a TIPC packet out over an L2 interface
* @skb: the packet to be sent
* @b: the bearer through which the packet is to be sent
* @dest: peer destination address
*/
int tipc_l2_send_msg(struct net *net, struct sk_buff *skb,
struct tipc_bearer *b, struct tipc_media_addr *dest)
{
struct net_device *dev;
int delta;
void *tipc_ptr;
dev = (struct net_device *)rcu_dereference_rtnl(b->media_ptr);
if (!dev)
return 0;
/* Send RESET message even if bearer is detached from device */
tipc_ptr = rcu_dereference_rtnl(dev->tipc_ptr);
if (unlikely(!tipc_ptr && !msg_is_reset(buf_msg(skb))))
goto drop;
delta = dev->hard_header_len - skb_headroom(skb);
if ((delta > 0) &&
pskb_expand_head(skb, SKB_DATA_ALIGN(delta), 0, GFP_ATOMIC))
goto drop;
skb_reset_network_header(skb);
skb->dev = dev;
skb->protocol = htons(ETH_P_TIPC);
dev_hard_header(skb, dev, ETH_P_TIPC, dest->value,
dev->dev_addr, skb->len);
dev_queue_xmit(skb);
return 0;
drop:
kfree_skb(skb);
return 0;
}
void x25_establish_link(struct x25_neigh *nb)
{
struct sk_buff *skb;
unsigned char *ptr;
switch (nb->dev->type) {
case ARPHRD_X25:
if ((skb = alloc_skb(1, GFP_ATOMIC)) == NULL) {
printk(KERN_ERR "x25_dev: out of memory\n");
return;
}
ptr = skb_put(skb, 1);
*ptr = X25_IFACE_CONNECT;
break;
#if defined(CONFIG_LLC) || defined(CONFIG_LLC_MODULE)
case ARPHRD_ETHER:
return;
#endif
default:
return;
}
skb->protocol = htons(ETH_P_X25);
skb->dev = nb->dev;
dev_queue_xmit(skb);
}
int wdl_modify_and_transmit(struct sk_buff *skb, struct net_device *netdev, uint8_t dest_mac[6], uint8_t src_mac[6], struct mymanet_header mymanethdr)
{
int orig_header_room=0;
uint32_t sec_holder;
int i = 0;
int prob_fwd;
uint8_t eth_type_manifold[2];
eth_type_manifold[0] = 0x33;
eth_type_manifold[1] = 0x33;
orig_header_room = (int)(skb->data - skb->head);
if(orig_header_room < (ETHERNET_HEADER_SIZE + MANIFOLD_HEADER_SIZE)){
printk(KERN_ALERT"ERROR : Insufficient headroom for constructing Manifold Packet\n");
kfree_skb(skb);
return -1;
}
sec_holder = htonl(mymanethdr.timestamp);
mymanethdr.timestamp = sec_holder;
#if MYMANET_STORE_PATH
if(mymanethdr.hops_remaining == 3) {
memcpy(mymanethdr.hop1_mac, src_mac, 6);
} else if (mymanethdr.hops_remaining == 2) {
memcpy(mymanethdr.hop2_mac, src_mac, 6);
} else if (mymanethdr.hops_remaining == 1) {
memcpy(mymanethdr.hop3_mac, src_mac, 6);
}
#endif
memcpy(skb_push(skb, MANIFOLD_HEADER_SIZE), &mymanethdr, MANIFOLD_HEADER_SIZE);
memcpy(skb_push(skb, 2), eth_type_manifold, 2);
memcpy(skb_push(skb, 6), src_mac, 6);
memcpy(skb_push(skb, 6), dest_mac, 6);
add_or_update_stat_entry(mymanethdr.final_destination, 2, mymanethdr.session_id, mymanethdr.final_destination);
#if DEBUG
printk(KERN_ALERT "MODIFIED and TRANSMITTED pkt from %x:%x:%x:%x:%x:%x to %x:%x:%x:%x:%x:%x type %x:%x",
src_mac[0], src_mac[1], src_mac[2], src_mac[3], src_mac[4], src_mac[5],
dest_mac[0], dest_mac[1], dest_mac[2], dest_mac[3], dest_mac[4], dest_mac[5],
eth_type_manifold[0], eth_type_manifold[1]);
#endif
if(netdev->flags & IFF_UP)
{
return dev_queue_xmit(skb);
}
else{
printk(KERN_ALERT "\n\nDevice was DOWN !! \n\n");
return NETDEV_TX_BUSY;
}
}
int vlan_dev_hard_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct net_device_stats *stats = vlan_dev_get_stats(dev);
struct vlan_ethhdr *veth = (struct vlan_ethhdr *)(skb->data);
/* Handle non-VLAN frames if they are sent to us, for example by DHCP.
*
* NOTE: THIS ASSUMES DIX ETHERNET, SPECIFICALLY NOT SUPPORTING
* OTHER THINGS LIKE FDDI/TokenRing/802.3 SNAPs...
*/
if (veth->h_vlan_proto != __constant_htons(ETH_P_8021Q)) {
int orig_headroom = skb_headroom(skb);
unsigned short veth_TCI;
/* This is not a VLAN frame...but we can fix that! */
VLAN_DEV_INFO(dev)->cnt_encap_on_xmit++;
#ifdef VLAN_DEBUG
printk(VLAN_DBG "%s: proto to encap: 0x%hx (hbo)\n",
__FUNCTION__, htons(veth->h_vlan_proto));
#endif
/* Construct the second two bytes. This field looks something
* like:
* usr_priority: 3 bits (high bits)
* CFI 1 bit
* VLAN ID 12 bits (low bits)
*/
veth_TCI = VLAN_DEV_INFO(dev)->vlan_id;
veth_TCI |= vlan_dev_get_egress_qos_mask(dev, skb);
skb = __vlan_put_tag(skb, veth_TCI);
if (!skb) {
stats->tx_dropped++;
return 0;
}
if (orig_headroom < VLAN_HLEN) {
VLAN_DEV_INFO(dev)->cnt_inc_headroom_on_tx++;
}
}
#ifdef VLAN_DEBUG
printk(VLAN_DBG "%s: about to send skb: %p to dev: %s\n",
__FUNCTION__, skb, skb->dev->name);
printk(VLAN_DBG " %2hx.%2hx.%2hx.%2xh.%2hx.%2hx %2hx.%2hx.%2hx.%2hx.%2hx.%2hx %4hx %4hx %4hx\n",
veth->h_dest[0], veth->h_dest[1], veth->h_dest[2], veth->h_dest[3], veth->h_dest[4], veth->h_dest[5],
veth->h_source[0], veth->h_source[1], veth->h_source[2], veth->h_source[3], veth->h_source[4], veth->h_source[5],
veth->h_vlan_proto, veth->h_vlan_TCI, veth->h_vlan_encapsulated_proto);
#endif
stats->tx_packets++; /* for statics only */
stats->tx_bytes += skb->len;
skb->dev = VLAN_DEV_INFO(dev)->real_dev;
dev_queue_xmit(skb);
return 0;
}
static void
rmnet_bridge_handler(struct sk_buff *skb, struct net_device *bridge_dev)
{
if (bridge_dev) {
skb->dev = bridge_dev;
dev_queue_xmit(skb);
}
}
static int p8023_request(struct datalink_proto *dl,
struct sk_buff *skb, unsigned char *dest_node)
{
struct net_device *dev = skb->dev;
dev_hard_header(skb, dev, ETH_P_802_3, dest_node, NULL, skb->len);
return dev_queue_xmit(skb);
}
/*
* Prepends an ISI header and sends a datagram.
*/
static int pn_send(struct sk_buff *skb, struct net_device *dev,
u16 dst, u16 src, u8 res, u8 irq)
{
struct phonethdr *ph;
int err;
if (skb->len + 2 > 0xffff /* Phonet length field limit */ ||
skb->len + sizeof(struct phonethdr) > dev->mtu) {
err = -EMSGSIZE;
goto drop;
}
/* Broadcast sending is not implemented */
if (pn_addr(dst) == PNADDR_BROADCAST) {
err = -EOPNOTSUPP;
goto drop;
}
skb_reset_transport_header(skb);
WARN_ON(skb_headroom(skb) & 1); /* HW assumes word alignment */
skb_push(skb, sizeof(struct phonethdr));
skb_reset_network_header(skb);
ph = pn_hdr(skb);
ph->pn_rdev = pn_dev(dst);
ph->pn_sdev = pn_dev(src);
ph->pn_res = res;
ph->pn_length = __cpu_to_be16(skb->len + 2 - sizeof(*ph));
ph->pn_robj = pn_obj(dst);
ph->pn_sobj = pn_obj(src);
skb->protocol = htons(ETH_P_PHONET);
skb->priority = 0;
skb->dev = dev;
if (pn_addr(src) == pn_addr(dst)) {
skb_reset_mac_header(skb);
skb->pkt_type = PACKET_LOOPBACK;
skb_orphan(skb);
if (irq)
netif_rx(skb);
else
netif_rx_ni(skb);
err = 0;
} else {
err = dev_hard_header(skb, dev, ntohs(skb->protocol),
NULL, NULL, skb->len);
if (err < 0) {
err = -EHOSTUNREACH;
goto drop;
}
err = dev_queue_xmit(skb);
}
return err;
drop:
kfree_skb(skb);
return err;
}
static int tcf_mirred(struct sk_buff *skb, struct tc_action *a,
struct tcf_result *res)
{
struct tcf_mirred *m = a->priv;
struct net_device *dev;
struct sk_buff *skb2 = NULL;
u32 at = G_TC_AT(skb->tc_verd);
spin_lock(&m->tcf_lock);
dev = m->tcfm_dev;
m->tcf_tm.lastuse = jiffies;
if (!(dev->flags&IFF_UP) ) {
if (net_ratelimit())
printk("mirred to Houston: device %s is gone!\n",
dev->name);
bad_mirred:
if (skb2 != NULL)
kfree_skb(skb2);
m->tcf_qstats.overlimits++;
m->tcf_bstats.bytes += qdisc_pkt_len(skb);
m->tcf_bstats.packets++;
spin_unlock(&m->tcf_lock);
/* should we be asking for packet to be dropped?
* may make sense for redirect case only
*/
return TC_ACT_SHOT;
}
skb2 = skb_act_clone(skb, GFP_ATOMIC);
if (skb2 == NULL)
goto bad_mirred;
if (m->tcfm_eaction != TCA_EGRESS_MIRROR &&
m->tcfm_eaction != TCA_EGRESS_REDIR) {
if (net_ratelimit())
printk("tcf_mirred unknown action %d\n",
m->tcfm_eaction);
goto bad_mirred;
}
m->tcf_bstats.bytes += qdisc_pkt_len(skb2);
m->tcf_bstats.packets++;
if (!(at & AT_EGRESS))
if (m->tcfm_ok_push)
skb_push(skb2, skb2->dev->hard_header_len);
/* mirror is always swallowed */
if (m->tcfm_eaction != TCA_EGRESS_MIRROR)
skb2->tc_verd = SET_TC_FROM(skb2->tc_verd, at);
skb2->dev = dev;
skb2->iif = skb->dev->ifindex;
dev_queue_xmit(skb2);
spin_unlock(&m->tcf_lock);
return m->tcf_action;
}
static int pEII_request(struct datalink_proto *dl,
struct sk_buff *skb, unsigned char *dest_node)
{
struct net_device *dev = skb->dev;
skb->protocol = htons(ETH_P_IPX);
dev_hard_header(skb, dev, ETH_P_IPX, dest_node, NULL, skb->len);
return dev_queue_xmit(skb);
}
void
aoenet_xmit(struct sk_buff_head *queue)
{
struct sk_buff *skb, *tmp;
skb_queue_walk_safe(queue, skb, tmp) {
__skb_unlink(skb, queue);
dev_queue_xmit(skb);
}
static void arp_send_q(struct arp_table *entry, unsigned char *hw_dest)
{
struct sk_buff *skb;
unsigned long flags;
/*
* Empty the entire queue, building its data up ready to send
*/
if(!(entry->flags&ATF_COM))
{
printk("arp_send_q: incomplete entry for %s\n",
in_ntoa(entry->ip));
return;
}
save_flags(flags);
cli();
while((skb = skb_dequeue(&entry->skb)) != NULL)
{
IS_SKB(skb);
skb_device_lock(skb);
restore_flags(flags);
if(!skb->dev->rebuild_header(skb->data,skb->dev,skb->raddr,skb))
{
skb->arp = 1;
if(skb->sk==NULL)
dev_queue_xmit(skb, skb->dev, 0);
else
dev_queue_xmit(skb,skb->dev,skb->sk->priority);
}
else
{
/* This routine is only ever called when 'entry' is
complete. Thus this can't fail. */
printk("arp_send_q: The impossible occurred. Please notify Alan.\n");
printk("arp_send_q: active entity %s\n",in_ntoa(entry->ip));
printk("arp_send_q: failed to find %s\n",in_ntoa(skb->raddr));
}
}
restore_flags(flags);
}
static void aarp_send_reply(struct device *dev, struct at_addr *us, struct at_addr *them, unsigned char *sha)
{
int len=dev->hard_header_len+sizeof(struct elapaarp)+aarp_dl->header_length;
struct sk_buff *skb=alloc_skb(len, GFP_ATOMIC);
struct elapaarp *eah;
if(skb==NULL)
return;
/*
* Set up the buffer.
*/
skb_reserve(skb,dev->hard_header_len+aarp_dl->header_length);
eah = (struct elapaarp *)skb_put(skb,sizeof(struct elapaarp));
skb->protocol = htons(ETH_P_ATALK);
skb->nh.raw = skb->h.raw = (void *) eah;
skb->dev = dev;
/*
* Set up the ARP.
*/
eah->hw_type = htons(AARP_HW_TYPE_ETHERNET);
eah->pa_type = htons(ETH_P_ATALK);
eah->hw_len = ETH_ALEN;
eah->pa_len = AARP_PA_ALEN;
eah->function = htons(AARP_REPLY);
memcpy(eah->hw_src, dev->dev_addr, ETH_ALEN);
eah->pa_src_zero= 0;
eah->pa_src_net = us->s_net;
eah->pa_src_node= us->s_node;
if(sha==NULL)
memset(eah->hw_dst, '\0', ETH_ALEN);
else
memcpy(eah->hw_dst, sha, ETH_ALEN);
eah->pa_dst_zero= 0;
eah->pa_dst_net = them->s_net;
eah->pa_dst_node= them->s_node;
/*
* Add ELAP headers and set target to the AARP multicast.
*/
aarp_dl->datalink_header(aarp_dl, skb, sha);
/*
* Send it.
*/
dev_queue_xmit(skb);
}
static void send_hsr_supervision_frame(struct net_device *hsr_dev, u8 type)
{
struct hsr_priv *hsr_priv;
struct sk_buff *skb;
int hlen, tlen;
struct hsr_sup_tag *hsr_stag;
struct hsr_sup_payload *hsr_sp;
unsigned long irqflags;
hlen = LL_RESERVED_SPACE(hsr_dev);
tlen = hsr_dev->needed_tailroom;
skb = alloc_skb(hsr_pad(sizeof(struct hsr_sup_payload)) + hlen + tlen,
GFP_ATOMIC);
if (skb == NULL)
return;
hsr_priv = netdev_priv(hsr_dev);
skb_reserve(skb, hlen);
skb->dev = hsr_dev;
skb->protocol = htons(ETH_P_PRP);
skb->priority = TC_PRIO_CONTROL;
if (dev_hard_header(skb, skb->dev, ETH_P_PRP,
hsr_priv->sup_multicast_addr,
skb->dev->dev_addr, skb->len) < 0)
goto out;
skb_pull(skb, sizeof(struct ethhdr));
hsr_stag = (typeof(hsr_stag)) skb->data;
set_hsr_stag_path(hsr_stag, 0xf);
set_hsr_stag_HSR_Ver(hsr_stag, 0);
spin_lock_irqsave(&hsr_priv->seqnr_lock, irqflags);
hsr_stag->sequence_nr = htons(hsr_priv->sequence_nr);
hsr_priv->sequence_nr++;
spin_unlock_irqrestore(&hsr_priv->seqnr_lock, irqflags);
hsr_stag->HSR_TLV_Type = type;
hsr_stag->HSR_TLV_Length = 12;
skb_push(skb, sizeof(struct ethhdr));
/* Payload: MacAddressA */
hsr_sp = (typeof(hsr_sp)) skb_put(skb, sizeof(*hsr_sp));
ether_addr_copy(hsr_sp->MacAddressA, hsr_dev->dev_addr);
dev_queue_xmit(skb);
return;
out:
kfree_skb(skb);
}
int virt_send_ack(struct virt_priv *virt, struct device_node *slave,
struct remote_link *link)
{
struct sk_buff *skb;
struct net_device *dev = slave->dev;
struct tunhdr *tunhdr;
struct pathinfo *path;
__be16 sport;
unsigned alloc_size = sizeof(struct tunhdr) + sizeof(struct udphdr) +
sizeof(struct iphdr) + LL_RESERVED_SPACE(dev);
path = lookup_pathinfo(&virt->network, slave, link);
if(!path)
return -EINVAL;
skb = alloc_skb(alloc_size, GFP_ATOMIC);
if(!skb) {
virt_path_put(path);
return -ENOMEM;
}
skb_reserve(skb, alloc_size);
tunhdr = virt_build_tunhdr(skb, NULL, NULL);
virt_finish_tunhdr(tunhdr, path, NULL, link->node);
/* TODO: We may want to split traffic among different ports, which
* may change how we send ACKs. For now, everything uses the same
* source port. */
sport = htons(virt_tunnel_source_port());
virt_build_udp_header(skb, sport, link->rif.data_port);
virt_build_ip_header(skb, slave->lif.ip4, link->rif.ip4);
skb->dev = dev;
skb->protocol = htons(ETH_P_IP);
dev_hard_header(skb, dev, ETH_P_IP, slave->next_hop_addr, dev->dev_addr, skb->len);
skb_reset_mac_header(skb);
/* Update link statistics -- these may not be accurate if the packet gets
* dropped after dev_queue_xmit. */
slave->stats.tx_packets++;
slave->stats.tx_bytes += skb->len;
/* Update device statistics. */
virt->stats.tx_packets++;
virt->stats.tx_bytes += skb->len;
/* Decrement refcnt. */
virt_path_put(path);
dev_queue_xmit(skb);
return 0;
}
static netdev_tx_t dsa_slave_notag_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct dsa_slave_priv *p = netdev_priv(dev);
skb->dev = p->parent->dst->master_netdev;
dev_queue_xmit(skb);
return NETDEV_TX_OK;
}
static int ztdeth_flush(void)
{
struct sk_buff *skb;
/* Handle all transmissions now */
while ((skb = skb_dequeue(&skbs))) {
dev_queue_xmit(skb);
}
return 0;
}