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net: Abstract dst->neighbour accesses behind helpers.

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dst_{get,set}_neighbour()

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2011-07-17 23:09:49 -07:00
parent 9cbb7ecbcf
commit 69cce1d140
29 changed files with 199 additions and 139 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

7
drivers/infiniband/core/addr.c
View file

@ -215,7 +215,7 @@ static int addr4_resolve(struct sockaddr_in *src_in,
neigh = neigh_lookup(&arp_tbl, &rt->rt_gateway, rt->dst.dev);
if (!neigh || !(neigh->nud_state & NUD_VALID)) {
neigh_event_send(rt->dst.neighbour, NULL);
neigh_event_send(dst_get_neighbour(&rt->dst), NULL);
ret = -ENODATA;
if (neigh)
goto release;
@ -273,9 +273,10 @@ static int addr6_resolve(struct sockaddr_in6 *src_in,
goto put;
}
neigh = dst->neighbour;
neigh = dst_get_neighbour(dst);
if (!neigh || !(neigh->nud_state & NUD_VALID)) {
neigh_event_send(dst->neighbour, NULL);
if (neigh)
neigh_event_send(neigh, NULL);
ret = -ENODATA;
goto put;
}

12
drivers/infiniband/hw/cxgb3/iwch_cm.c
View file

@ -1328,6 +1328,7 @@ static int pass_accept_req(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
struct iwch_ep *child_ep, *parent_ep = ctx;
struct cpl_pass_accept_req *req = cplhdr(skb);
unsigned int hwtid = GET_TID(req);
struct neighbour *neigh;
struct dst_entry *dst;
struct l2t_entry *l2t;
struct rtable *rt;
@ -1364,7 +1365,8 @@ static int pass_accept_req(struct t3cdev *tdev, struct sk_buff *skb, void *ctx)
goto reject;
}
dst = &rt->dst;
l2t = t3_l2t_get(tdev, dst->neighbour, dst->neighbour->dev);
neigh = dst_get_neighbour(dst);
l2t = t3_l2t_get(tdev, neigh, neigh->dev);
if (!l2t) {
printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n",
__func__);
@ -1874,10 +1876,11 @@ static int is_loopback_dst(struct iw_cm_id *cm_id)
int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
{
int err = 0;
struct iwch_dev *h = to_iwch_dev(cm_id->device);
struct neighbour *neigh;
struct iwch_ep *ep;
struct rtable *rt;
int err = 0;
if (is_loopback_dst(cm_id)) {
err = -ENOSYS;
@ -1933,9 +1936,10 @@ int iwch_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
}
ep->dst = &rt->dst;
neigh = dst_get_neighbour(ep->dst);
/* get a l2t entry */
ep->l2t = t3_l2t_get(ep->com.tdev, ep->dst->neighbour,
ep->dst->neighbour->dev);
ep->l2t = t3_l2t_get(ep->com.tdev, neigh, neigh->dev);
if (!ep->l2t) {
printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__);
err = -ENOMEM;

42
drivers/infiniband/hw/cxgb4/cm.c
View file

@ -1325,6 +1325,7 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
unsigned int stid = GET_POPEN_TID(ntohl(req->tos_stid));
struct tid_info *t = dev->rdev.lldi.tids;
unsigned int hwtid = GET_TID(req);
struct neighbour *neigh;
struct dst_entry *dst;
struct l2t_entry *l2t;
struct rtable *rt;
@ -1357,11 +1358,11 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
goto reject;
}
dst = &rt->dst;
if (dst->neighbour->dev->flags & IFF_LOOPBACK) {
neigh = dst_get_neighbour(dst);
if (neigh->dev->flags & IFF_LOOPBACK) {
pdev = ip_dev_find(&init_net, peer_ip);
BUG_ON(!pdev);
l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, dst->neighbour,
pdev, 0);
l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, pdev, 0);
mtu = pdev->mtu;
tx_chan = cxgb4_port_chan(pdev);
smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1;
@ -1372,17 +1373,16 @@ static int pass_accept_req(struct c4iw_dev *dev, struct sk_buff *skb)
rss_qid = dev->rdev.lldi.rxq_ids[cxgb4_port_idx(pdev) * step];
dev_put(pdev);
} else {
l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, dst->neighbour,
dst->neighbour->dev, 0);
l2t = cxgb4_l2t_get(dev->rdev.lldi.l2t, neigh, neigh->dev, 0);
mtu = dst_mtu(dst);
tx_chan = cxgb4_port_chan(dst->neighbour->dev);
smac_idx = (cxgb4_port_viid(dst->neighbour->dev) & 0x7F) << 1;
tx_chan = cxgb4_port_chan(neigh->dev);
smac_idx = (cxgb4_port_viid(neigh->dev) & 0x7F) << 1;
step = dev->rdev.lldi.ntxq / dev->rdev.lldi.nchan;
txq_idx = cxgb4_port_idx(dst->neighbour->dev) * step;
ctrlq_idx = cxgb4_port_idx(dst->neighbour->dev);
txq_idx = cxgb4_port_idx(neigh->dev) * step;
ctrlq_idx = cxgb4_port_idx(neigh->dev);
step = dev->rdev.lldi.nrxq / dev->rdev.lldi.nchan;
rss_qid = dev->rdev.lldi.rxq_ids[
cxgb4_port_idx(dst->neighbour->dev) * step];
cxgb4_port_idx(neigh->dev) * step];
}
if (!l2t) {
printk(KERN_ERR MOD "%s - failed to allocate l2t entry!\n",
@ -1847,6 +1847,7 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
struct c4iw_ep *ep;
struct rtable *rt;
struct net_device *pdev;
struct neighbour *neigh;
int step;
if ((conn_param->ord > c4iw_max_read_depth) ||
@ -1908,14 +1909,15 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
}
ep->dst = &rt->dst;
neigh = dst_get_neighbour(ep->dst);
/* get a l2t entry */
if (ep->dst->neighbour->dev->flags & IFF_LOOPBACK) {
if (neigh->dev->flags & IFF_LOOPBACK) {
PDBG("%s LOOPBACK\n", __func__);
pdev = ip_dev_find(&init_net,
cm_id->remote_addr.sin_addr.s_addr);
ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t,
ep->dst->neighbour,
pdev, 0);
neigh, pdev, 0);
ep->mtu = pdev->mtu;
ep->tx_chan = cxgb4_port_chan(pdev);
ep->smac_idx = (cxgb4_port_viid(pdev) & 0x7F) << 1;
@ -1930,20 +1932,18 @@ int c4iw_connect(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
dev_put(pdev);
} else {
ep->l2t = cxgb4_l2t_get(ep->com.dev->rdev.lldi.l2t,
ep->dst->neighbour,
ep->dst->neighbour->dev, 0);
neigh, neigh->dev, 0);
ep->mtu = dst_mtu(ep->dst);
ep->tx_chan = cxgb4_port_chan(ep->dst->neighbour->dev);
ep->smac_idx = (cxgb4_port_viid(ep->dst->neighbour->dev) &
0x7F) << 1;
ep->tx_chan = cxgb4_port_chan(neigh->dev);
ep->smac_idx = (cxgb4_port_viid(neigh->dev) & 0x7F) << 1;
step = ep->com.dev->rdev.lldi.ntxq /
ep->com.dev->rdev.lldi.nchan;
ep->txq_idx = cxgb4_port_idx(ep->dst->neighbour->dev) * step;
ep->ctrlq_idx = cxgb4_port_idx(ep->dst->neighbour->dev);
ep->txq_idx = cxgb4_port_idx(neigh->dev) * step;
ep->ctrlq_idx = cxgb4_port_idx(neigh->dev);
step = ep->com.dev->rdev.lldi.nrxq /
ep->com.dev->rdev.lldi.nchan;
ep->rss_qid = ep->com.dev->rdev.lldi.rxq_ids[
cxgb4_port_idx(ep->dst->neighbour->dev) * step];
cxgb4_port_idx(neigh->dev) * step];
}
if (!ep->l2t) {
printk(KERN_ERR MOD "%s - cannot alloc l2e.\n", __func__);

2
drivers/infiniband/hw/nes/nes_cm.c
View file

@ -1151,7 +1151,7 @@ static int nes_addr_resolve_neigh(struct nes_vnic *nesvnic, u32 dst_ip, int arpi
}
if ((neigh == NULL) || (!(neigh->nud_state & NUD_VALID)))
neigh_event_send(rt->dst.neighbour, NULL);
neigh_event_send(dst_get_neighbour(&rt->dst), NULL);
ip_rt_put(rt);
return rc;

41
drivers/infiniband/ulp/ipoib/ipoib_main.c
View file

@ -560,9 +560,11 @@ static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_path *path;
struct ipoib_neigh *neigh;
struct neighbour *n;
unsigned long flags;
neigh = ipoib_neigh_alloc(skb_dst(skb)->neighbour, skb->dev);
n = dst_get_neighbour(skb_dst(skb));
neigh = ipoib_neigh_alloc(n, skb->dev);
if (!neigh) {
++dev->stats.tx_dropped;
dev_kfree_skb_any(skb);
@ -571,9 +573,9 @@ static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
spin_lock_irqsave(&priv->lock, flags);
path = __path_find(dev, skb_dst(skb)->neighbour->ha + 4);
path = __path_find(dev, n->ha + 4);
if (!path) {
path = path_rec_create(dev, skb_dst(skb)->neighbour->ha + 4);
path = path_rec_create(dev, n->ha + 4);
if (!path)
goto err_path;
@ -607,7 +609,7 @@ static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
}
} else {
spin_unlock_irqrestore(&priv->lock, flags);
ipoib_send(dev, skb, path->ah, IPOIB_QPN(skb_dst(skb)->neighbour->ha));
ipoib_send(dev, skb, path->ah, IPOIB_QPN(n->ha));
return;
}
} else {
@ -637,17 +639,20 @@ static void neigh_add_path(struct sk_buff *skb, struct net_device *dev)
static void ipoib_path_lookup(struct sk_buff *skb, struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(skb->dev);
struct dst_entry *dst = skb_dst(skb);
struct neighbour *n;
/* Look up path record for unicasts */
if (skb_dst(skb)->neighbour->ha[4] != 0xff) {
n = dst_get_neighbour(dst);
if (n->ha[4] != 0xff) {
neigh_add_path(skb, dev);
return;
}
/* Add in the P_Key for multicasts */
skb_dst(skb)->neighbour->ha[8] = (priv->pkey >> 8) & 0xff;
skb_dst(skb)->neighbour->ha[9] = priv->pkey & 0xff;
ipoib_mcast_send(dev, skb_dst(skb)->neighbour->ha + 4, skb);
n->ha[8] = (priv->pkey >> 8) & 0xff;
n->ha[9] = priv->pkey & 0xff;
ipoib_mcast_send(dev, n->ha + 4, skb);
}
static void unicast_arp_send(struct sk_buff *skb, struct net_device *dev,
@ -712,18 +717,20 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
{
struct ipoib_dev_priv *priv = netdev_priv(dev);
struct ipoib_neigh *neigh;
struct neighbour *n;
unsigned long flags;
if (likely(skb_dst(skb) && skb_dst(skb)->neighbour)) {
if (unlikely(!*to_ipoib_neigh(skb_dst(skb)->neighbour))) {
n = dst_get_neighbour(skb_dst(skb));
if (likely(skb_dst(skb) && n)) {
if (unlikely(!*to_ipoib_neigh(n))) {
ipoib_path_lookup(skb, dev);
return NETDEV_TX_OK;
}
neigh = *to_ipoib_neigh(skb_dst(skb)->neighbour);
neigh = *to_ipoib_neigh(n);
if (unlikely((memcmp(&neigh->dgid.raw,
skb_dst(skb)->neighbour->ha + 4,
n->ha + 4,
sizeof(union ib_gid))) ||
(neigh->dev != dev))) {
spin_lock_irqsave(&priv->lock, flags);
@ -749,7 +756,7 @@ static int ipoib_start_xmit(struct sk_buff *skb, struct net_device *dev)
return NETDEV_TX_OK;
}
} else if (neigh->ah) {
ipoib_send(dev, skb, neigh->ah, IPOIB_QPN(skb_dst(skb)->neighbour->ha));
ipoib_send(dev, skb, neigh->ah, IPOIB_QPN(n->ha));
return NETDEV_TX_OK;
}
@ -812,6 +819,8 @@ static int ipoib_hard_header(struct sk_buff *skb,
const void *daddr, const void *saddr, unsigned len)
{
struct ipoib_header *header;
struct dst_entry *dst;
struct neighbour *n;
header = (struct ipoib_header *) skb_push(skb, sizeof *header);
@ -823,7 +832,11 @@ static int ipoib_hard_header(struct sk_buff *skb,
* destination address onto the front of the skb so we can
* figure out where to send the packet later.
*/
if ((!skb_dst(skb) || !skb_dst(skb)->neighbour) && daddr) {
dst = skb_dst(skb);
n = NULL;
if (dst)
n = dst_get_neighbour(dst);
if ((!dst || !n) && daddr) {
struct ipoib_pseudoheader *phdr =
(struct ipoib_pseudoheader *) skb_push(skb, sizeof *phdr);
memcpy(phdr->hwaddr, daddr, INFINIBAND_ALEN);

20
drivers/infiniband/ulp/ipoib/ipoib_multicast.c
View file

@ -258,11 +258,15 @@ static int ipoib_mcast_join_finish(struct ipoib_mcast *mcast,
netif_tx_lock_bh(dev);
while (!skb_queue_empty(&mcast->pkt_queue)) {
struct sk_buff *skb = skb_dequeue(&mcast->pkt_queue);
struct dst_entry *dst = skb_dst(skb);
struct neighbour *n = NULL;
netif_tx_unlock_bh(dev);
skb->dev = dev;
if (!skb_dst(skb) || !skb_dst(skb)->neighbour) {
if (dst)
n = dst_get_neighbour(dst);
if (!dst || !n) {
/* put pseudoheader back on for next time */
skb_push(skb, sizeof (struct ipoib_pseudoheader));
}
@ -715,11 +719,13 @@ void ipoib_mcast_send(struct net_device *dev, void *mgid, struct sk_buff *skb)
out:
if (mcast && mcast->ah) {
if (skb_dst(skb) &&
skb_dst(skb)->neighbour &&
!*to_ipoib_neigh(skb_dst(skb)->neighbour)) {
struct ipoib_neigh *neigh = ipoib_neigh_alloc(skb_dst(skb)->neighbour,
skb->dev);
struct dst_entry *dst = skb_dst(skb);
struct neighbour *n = NULL;
if (dst)
n = dst_get_neighbour(dst);
if (n && !*to_ipoib_neigh(n)) {
struct ipoib_neigh *neigh = ipoib_neigh_alloc(n,
skb->dev);
if (neigh) {
kref_get(&mcast->ah->ref);

8
drivers/net/cxgb3/cxgb3_offload.c
View file

@ -971,7 +971,7 @@ static int nb_callback(struct notifier_block *self, unsigned long event,
case (NETEVENT_REDIRECT):{
struct netevent_redirect *nr = ctx;
cxgb_redirect(nr->old, nr->new);
cxgb_neigh_update(nr->new->neighbour);
cxgb_neigh_update(dst_get_neighbour(nr->new));
break;
}
default:
@ -1116,8 +1116,8 @@ static void cxgb_redirect(struct dst_entry *old, struct dst_entry *new)
struct l2t_entry *e;
struct t3c_tid_entry *te;
olddev = old->neighbour->dev;
newdev = new->neighbour->dev;
olddev = dst_get_neighbour(old)->dev;
newdev = dst_get_neighbour(new)->dev;
if (!is_offloading(olddev))
return;
if (!is_offloading(newdev)) {
@ -1134,7 +1134,7 @@ static void cxgb_redirect(struct dst_entry *old, struct dst_entry *new)
}
/* Add new L2T entry */
e = t3_l2t_get(tdev, new->neighbour, newdev);
e = t3_l2t_get(tdev, dst_get_neighbour(new), newdev);
if (!e) {
printk(KERN_ERR "%s: couldn't allocate new l2t entry!\n",
__func__);

23
drivers/s390/net/qeth_l3_main.c
View file

@ -2742,9 +2742,14 @@ static int qeth_l3_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
{
int cast_type = RTN_UNSPEC;
struct neighbour *n = NULL;
struct dst_entry *dst;
if (skb_dst(skb) && skb_dst(skb)->neighbour) {
cast_type = skb_dst(skb)->neighbour->type;
dst = skb_dst(skb);
if (dst)
n = dst_get_neighbour(dst);
if (n) {
cast_type = n->type;
if ((cast_type == RTN_BROADCAST) ||
(cast_type == RTN_MULTICAST) ||
(cast_type == RTN_ANYCAST))
@ -2787,6 +2792,9 @@ int inline qeth_l3_get_cast_type(struct qeth_card *card, struct sk_buff *skb)
static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
struct sk_buff *skb, int ipv, int cast_type)
{
struct neighbour *n = NULL;
struct dst_entry *dst;
memset(hdr, 0, sizeof(struct qeth_hdr));
hdr->hdr.l3.id = QETH_HEADER_TYPE_LAYER3;
hdr->hdr.l3.ext_flags = 0;
@ -2804,13 +2812,16 @@ static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
}
hdr->hdr.l3.length = skb->len - sizeof(struct qeth_hdr);
dst = skb_dst(skb);
if (dst)
n = dst_get_neighbour(dst);
if (ipv == 4) {
/* IPv4 */
hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags4(cast_type);
memset(hdr->hdr.l3.dest_addr, 0, 12);
if ((skb_dst(skb)) && (skb_dst(skb)->neighbour)) {
if (n) {
*((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
*((u32 *) skb_dst(skb)->neighbour->primary_key);
*((u32 *) n->primary_key);
} else {
/* fill in destination address used in ip header */
*((u32 *) (&hdr->hdr.l3.dest_addr[12])) =
@ -2821,9 +2832,9 @@ static void qeth_l3_fill_header(struct qeth_card *card, struct qeth_hdr *hdr,
hdr->hdr.l3.flags = qeth_l3_get_qeth_hdr_flags6(cast_type);
if (card->info.type == QETH_CARD_TYPE_IQD)
hdr->hdr.l3.flags &= ~QETH_HDR_PASSTHRU;
if ((skb_dst(skb)) && (skb_dst(skb)->neighbour)) {
if (n) {
memcpy(hdr->hdr.l3.dest_addr,
skb_dst(skb)->neighbour->primary_key, 16);
n->primary_key, 16);
} else {
/* fill in destination address used in ip header */
memcpy(hdr->hdr.l3.dest_addr,

2
drivers/scsi/cxgbi/cxgb3i/cxgb3i.c
View file

@ -985,7 +985,7 @@ static int init_act_open(struct cxgbi_sock *csk)
csk->saddr.sin_addr.s_addr = chba->ipv4addr;
csk->rss_qid = 0;
csk->l2t = t3_l2t_get(t3dev, dst->neighbour, ndev);
csk->l2t = t3_l2t_get(t3dev, dst_get_neighbour(dst), ndev);
if (!csk->l2t) {
pr_err("NO l2t available.\n");
return -EINVAL;

2
drivers/scsi/cxgbi/cxgb4i/cxgb4i.c
View file

@ -1160,7 +1160,7 @@ static int init_act_open(struct cxgbi_sock *csk)
cxgbi_sock_set_flag(csk, CTPF_HAS_ATID);
cxgbi_sock_get(csk);
csk->l2t = cxgb4_l2t_get(lldi->l2t, csk->dst->neighbour, ndev, 0);
csk->l2t = cxgb4_l2t_get(lldi->l2t, dst_get_neighbour(csk->dst), ndev, 0);
if (!csk->l2t) {
pr_err("%s, cannot alloc l2t.\n", ndev->name);
goto rel_resource;

4
drivers/scsi/cxgbi/libcxgbi.c
View file

@ -492,7 +492,7 @@ static struct cxgbi_sock *cxgbi_check_route(struct sockaddr *dst_addr)
goto err_out;
}
dst = &rt->dst;
ndev = dst->neighbour->dev;
ndev = dst_get_neighbour(dst)->dev;
if (rt->rt_flags & (RTCF_MULTICAST | RTCF_BROADCAST)) {
pr_info("multi-cast route %pI4, port %u, dev %s.\n",
@ -506,7 +506,7 @@ static struct cxgbi_sock *cxgbi_check_route(struct sockaddr *dst_addr)
ndev = ip_dev_find(&init_net, daddr->sin_addr.s_addr);
mtu = ndev->mtu;
pr_info("rt dev %s, loopback -> %s, mtu %u.\n",
dst->neighbour->dev->name, ndev->name, mtu);
dst_get_neighbour(dst)->dev->name, ndev->name, mtu);
}
cdev = cxgbi_device_find_by_netdev(ndev, &port);

18
include/net/dst.h
View file

@ -37,7 +37,7 @@ struct dst_entry {
unsigned long _metrics;
unsigned long expires;
struct dst_entry *path;
struct neighbour *neighbour;
struct neighbour *_neighbour;
#ifdef CONFIG_XFRM
struct xfrm_state *xfrm;
#else
@ -86,6 +86,16 @@ struct dst_entry {
};
};
static inline struct neighbour *dst_get_neighbour(struct dst_entry *dst)
{
return dst->_neighbour;
}
static inline void dst_set_neighbour(struct dst_entry *dst, struct neighbour *neigh)
{
dst->_neighbour = neigh;
}
extern u32 *dst_cow_metrics_generic(struct dst_entry *dst, unsigned long old);
extern const u32 dst_default_metrics[RTAX_MAX];
@ -371,8 +381,10 @@ static inline void dst_rcu_free(struct rcu_head *head)
static inline void dst_confirm(struct dst_entry *dst)
{
if (dst)
neigh_confirm(dst->neighbour);
if (dst) {
struct neighbour *n = dst_get_neighbour(dst);
neigh_confirm(n);
}
}
static inline void dst_link_failure(struct sk_buff *skb)

16
net/atm/clip.c
View file

@ -362,33 +362,37 @@ static netdev_tx_t clip_start_xmit(struct sk_buff *skb,
struct net_device *dev)
{
struct clip_priv *clip_priv = PRIV(dev);
struct dst_entry *dst = skb_dst(skb);
struct atmarp_entry *entry;
struct neighbour *n;
struct atm_vcc *vcc;
int old;
unsigned long flags;
pr_debug("(skb %p)\n", skb);
if (!skb_dst(skb)) {
if (!dst) {
pr_err("skb_dst(skb) == NULL\n");
dev_kfree_skb(skb);
dev->stats.tx_dropped++;
return NETDEV_TX_OK;
}
if (!skb_dst(skb)->neighbour) {
n = dst_get_neighbour(dst);
if (!n) {
#if 0
skb_dst(skb)->neighbour = clip_find_neighbour(skb_dst(skb), 1);
if (!skb_dst(skb)->neighbour) {
n = clip_find_neighbour(skb_dst(skb), 1);
if (!n) {
dev_kfree_skb(skb); /* lost that one */
dev->stats.tx_dropped++;
return 0;
}
dst_set_neighbour(dst, n);
#endif
pr_err("NO NEIGHBOUR !\n");
dev_kfree_skb(skb);
dev->stats.tx_dropped++;
return NETDEV_TX_OK;
}
entry = NEIGH2ENTRY(skb_dst(skb)->neighbour);
entry = NEIGH2ENTRY(n);
if (!entry->vccs) {
if (time_after(jiffies, entry->expires)) {
/* should be resolved */
@ -405,7 +409,7 @@ static netdev_tx_t clip_start_xmit(struct sk_buff *skb,
}
pr_debug("neigh %p, vccs %p\n", entry, entry->vccs);
ATM_SKB(skb)->vcc = vcc = entry->vccs->vcc;
pr_debug("using neighbour %p, vcc %p\n", skb_dst(skb)->neighbour, vcc);
pr_debug("using neighbour %p, vcc %p\n", n, vcc);
if (entry->vccs->encap) {
void *here;

2
net/bridge/br_netfilter.c
View file

@ -350,7 +350,7 @@ static int br_nf_pre_routing_finish_bridge(struct sk_buff *skb)
if (!skb->dev)
goto free_skb;
dst = skb_dst(skb);
neigh = dst->neighbour;
neigh = dst_get_neighbour(dst);
if (neigh->hh.hh_len) {
neigh_hh_bridge(&neigh->hh, skb);
skb->dev = nf_bridge->physindev;

10
net/core/dst.c
View file

@ -171,7 +171,7 @@ void *dst_alloc(struct dst_ops *ops, struct net_device *dev,
dst_init_metrics(dst, dst_default_metrics, true);
dst->expires = 0UL;
dst->path = dst;
dst->neighbour = NULL;
dst->_neighbour = NULL;
#ifdef CONFIG_XFRM
dst->xfrm = NULL;
#endif
@ -229,11 +229,11 @@ struct dst_entry *dst_destroy(struct dst_entry * dst)
smp_rmb();
again:
neigh = dst->neighbour;
neigh = dst->_neighbour;
child = dst->child;
if (neigh) {
dst->neighbour = NULL;
dst->_neighbour = NULL;
neigh_release(neigh);
}
@ -363,8 +363,8 @@ static void dst_ifdown(struct dst_entry *dst, struct net_device *dev,
dst->dev = dev_net(dst->dev)->loopback_dev;
dev_hold(dst->dev);
dev_put(dev);
if (dst->neighbour && dst->neighbour->dev == dev) {
dst->neighbour->dev = dst->dev;
if (dst->_neighbour && dst->_neighbour->dev == dev) {
dst->_neighbour->dev = dst->dev;
dev_hold(dst->dev);
dev_put(dev);
}

7
net/core/neighbour.c
View file

@ -1153,11 +1153,12 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new,
while (neigh->nud_state & NUD_VALID &&
(skb = __skb_dequeue(&neigh->arp_queue)) != NULL) {
struct neighbour *n1 = neigh;
struct dst_entry *dst = skb_dst(skb);
struct neighbour *n2, *n1 = neigh;
write_unlock_bh(&neigh->lock);
/* On shaper/eql skb->dst->neighbour != neigh :( */
if (skb_dst(skb) && skb_dst(skb)->neighbour)
n1 = skb_dst(skb)->neighbour;
if (dst && (n2 = dst_get_neighbour(dst)) != NULL)
n1 = n2;
n1->output(n1, skb);
write_lock_bh(&neigh->lock);
}

2
net/decnet/dn_neigh.c
View file

@ -202,7 +202,7 @@ static int dn_neigh_output_packet(struct sk_buff *skb)
{
struct dst_entry *dst = skb_dst(skb);
struct dn_route *rt = (struct dn_route *)dst;
struct neighbour *neigh = dst->neighbour;
struct neighbour *neigh = dst_get_neighbour(dst);
struct net_device *dev = neigh->dev;
char mac_addr[ETH_ALEN];

18
net/decnet/dn_route.c
View file

@ -241,9 +241,11 @@ static int dn_dst_gc(struct dst_ops *ops)
*/
static void dn_dst_update_pmtu(struct dst_entry *dst, u32 mtu)
{
struct neighbour *n = dst_get_neighbour(dst);
u32 min_mtu = 230;
struct dn_dev *dn = dst->neighbour ?
rcu_dereference_raw(dst->neighbour->dev->dn_ptr) : NULL;
struct dn_dev *dn;
dn = n ? rcu_dereference_raw(n->dev->dn_ptr) : NULL;
if (dn && dn->use_long == 0)
min_mtu -= 6;
@ -708,7 +710,7 @@ int dn_route_rcv(struct sk_buff *skb, struct net_device *dev, struct packet_type
static int dn_to_neigh_output(struct sk_buff *skb)
{
struct dst_entry *dst = skb_dst(skb);
struct neighbour *n = dst->neighbour;
struct neighbour *n = dst_get_neighbour(dst);
return n->output(n, skb);
}
@ -723,7 +725,7 @@ static int dn_output(struct sk_buff *skb)
int err = -EINVAL;
if ((neigh = dst->neighbour) == NULL)
if ((neigh = dst_get_neighbour(dst)) == NULL)
goto error;
skb->dev = dev;
@ -840,11 +842,11 @@ static int dn_rt_set_next_hop(struct dn_route *rt, struct dn_fib_res *res)
}
rt->rt_type = res->type;
if (dev != NULL && rt->dst.neighbour == NULL) {
if (dev != NULL && dst_get_neighbour(&rt->dst) == NULL) {
n = __neigh_lookup_errno(&dn_neigh_table, &rt->rt_gateway, dev);
if (IS_ERR(n))
return PTR_ERR(n);
rt->dst.neighbour = n;
dst_set_neighbour(&rt->dst, n);
}
if (dst_metric(&rt->dst, RTAX_MTU) > rt->dst.dev->mtu)
@ -1151,7 +1153,7 @@ static int dn_route_output_slow(struct dst_entry **pprt, const struct flowidn *o
rt->rt_dst_map = fld.daddr;
rt->rt_src_map = fld.saddr;
rt->dst.neighbour = neigh;
dst_set_neighbour(&rt->dst, neigh);
neigh = NULL;
rt->dst.lastuse = jiffies;
@ -1423,7 +1425,7 @@ static int dn_route_input_slow(struct sk_buff *skb)
rt->fld.flowidn_iif = in_dev->ifindex;
rt->fld.flowidn_mark = fld.flowidn_mark;
rt->dst.neighbour = neigh;
dst_set_neighbour(&rt->dst, neigh);
rt->dst.lastuse = jiffies;
rt->dst.output = dn_rt_bug;
switch (res.type) {

2
net/ipv4/ip_gre.c
View file

@ -731,9 +731,9 @@ static netdev_tx_t ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev
}
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
else if (skb->protocol == htons(ETH_P_IPV6)) {
struct neighbour *neigh = dst_get_neighbour(skb_dst(skb));
const struct in6_addr *addr6;
int addr_type;
struct neighbour *neigh = skb_dst(skb)->neighbour;
if (neigh == NULL)
goto tx_error;

2
net/ipv4/ip_output.c
View file

@ -204,7 +204,7 @@ static inline int ip_finish_output2(struct sk_buff *skb)
skb = skb2;
}
neigh = dst->neighbour;
neigh = dst_get_neighbour(dst);
if (neigh)
return neigh_output(neigh, skb);

25
net/ipv4/route.c
View file

@ -412,8 +412,10 @@ static int rt_cache_seq_show(struct seq_file *seq, void *v)
"HHUptod\tSpecDst");
else {
struct rtable *r = v;
struct neighbour *n;
int len;
n = dst_get_neighbour(&r->dst);
seq_printf(seq, "%s\t%08X\t%08X\t%8X\t%d\t%u\t%d\t"
"%08X\t%d\t%u\t%u\t%02X\t%d\t%1d\t%08X%n",
r->dst.dev ? r->dst.dev->name : "*",
@ -427,9 +429,7 @@ static int rt_cache_seq_show(struct seq_file *seq, void *v)
dst_metric(&r->dst, RTAX_RTTVAR)),
r->rt_key_tos,
-1,
(r->dst.neighbour &&
(r->dst.neighbour->nud_state & NUD_CONNECTED)) ?
1 : 0,
(n && (n->nud_state & NUD_CONNECTED)) ? 1 : 0,
r->rt_spec_dst, &len);
seq_printf(seq, "%*s\n", 127 - len, "");
@ -1026,7 +1026,7 @@ static int rt_bind_neighbour(struct rtable *rt)
n = ipv4_neigh_lookup(tbl, dev, nexthop);
if (IS_ERR(n))
return PTR_ERR(n);
rt->dst.neighbour = n;
dst_set_neighbour(&rt->dst, n);
return 0;
}
@ -1617,23 +1617,24 @@ static int check_peer_redir(struct dst_entry *dst, struct inet_peer *peer)
{
struct rtable *rt = (struct rtable *) dst;
__be32 orig_gw = rt->rt_gateway;
struct neighbour *n;
dst_confirm(&rt->dst);
neigh_release(rt->dst.neighbour);
rt->dst.neighbour = NULL;
neigh_release(dst_get_neighbour(&rt->dst));
dst_set_neighbour(&rt->dst, NULL);
rt->rt_gateway = peer->redirect_learned.a4;
if (rt_bind_neighbour(rt) ||
!(rt->dst.neighbour->nud_state & NUD_VALID)) {
if (rt->dst.neighbour)
neigh_event_send(rt->dst.neighbour, NULL);
rt_bind_neighbour(rt);
n = dst_get_neighbour(&rt->dst);
if (!n || !(n->nud_state & NUD_VALID)) {
if (n)
neigh_event_send(n, NULL);
rt->rt_gateway = orig_gw;
return -EAGAIN;
} else {
rt->rt_flags |= RTCF_REDIRECTED;
call_netevent_notifiers(NETEVENT_NEIGH_UPDATE,
rt->dst.neighbour);
call_netevent_notifiers(NETEVENT_NEIGH_UPDATE, n);
}
return 0;
}

2
net/ipv6/addrconf.c
View file

@ -656,7 +656,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen,
* layer address of our nexhop router
*/
if (rt->dst.neighbour == NULL)
if (dst_get_neighbour(&rt->dst) == NULL)
ifa->flags &= ~IFA_F_OPTIMISTIC;
ifa->idev = idev;

2
net/ipv6/ip6_fib.c
View file

@ -1455,7 +1455,7 @@ static int fib6_age(struct rt6_info *rt, void *arg)
RT6_TRACE("aging clone %p\n", rt);
return -1;
} else if ((rt->rt6i_flags & RTF_GATEWAY) &&
(!(rt->dst.neighbour->flags & NTF_ROUTER))) {
(!(dst_get_neighbour(&rt->dst)->flags & NTF_ROUTER))) {
RT6_TRACE("purging route %p via non-router but gateway\n",
rt);
return -1;

16
net/ipv6/ip6_output.c
View file

@ -135,7 +135,7 @@ static int ip6_finish_output2(struct sk_buff *skb)
skb->len);
}
neigh = dst->neighbour;
neigh = dst_get_neighbour(dst);
if (neigh)
return neigh_output(neigh, skb);
@ -385,6 +385,7 @@ int ip6_forward(struct sk_buff *skb)
struct ipv6hdr *hdr = ipv6_hdr(skb);
struct inet6_skb_parm *opt = IP6CB(skb);
struct net *net = dev_net(dst->dev);
struct neighbour *n;
u32 mtu;
if (net->ipv6.devconf_all->forwarding == 0)
@ -459,11 +460,10 @@ int ip6_forward(struct sk_buff *skb)
send redirects to source routed frames.
We don't send redirects to frames decapsulated from IPsec.
*/
if (skb->dev == dst->dev && dst->neighbour && opt->srcrt == 0 &&
!skb_sec_path(skb)) {
n = dst_get_neighbour(dst);
if (skb->dev == dst->dev && n && opt->srcrt == 0 && !skb_sec_path(skb)) {
struct in6_addr *target = NULL;
struct rt6_info *rt;
struct neighbour *n = dst->neighbour;
/*
* incoming and outgoing devices are the same
@ -920,8 +920,11 @@ static struct dst_entry *ip6_sk_dst_check(struct sock *sk,
static int ip6_dst_lookup_tail(struct sock *sk,
struct dst_entry **dst, struct flowi6 *fl6)
{
int err;
struct net *net = sock_net(sk);
#ifdef CONFIG_IPV6_OPTIMISTIC_DAD
struct neighbour *n;
#endif
int err;
if (*dst == NULL)
*dst = ip6_route_output(net, sk, fl6);
@ -947,7 +950,8 @@ static int ip6_dst_lookup_tail(struct sock *sk,
* dst entry and replace it instead with the
* dst entry of the nexthop router
*/
if ((*dst)->neighbour && !((*dst)->neighbour->nud_state & NUD_VALID)) {
n = dst_get_neighbour(*dst);
if (n && !(n->nud_state & NUD_VALID)) {
struct inet6_ifaddr *ifp;
struct flowi6 fl_gw6;
int redirect;

4
net/ipv6/ndisc.c
View file

@ -1238,7 +1238,7 @@ static void ndisc_router_discovery(struct sk_buff *skb)
rt = rt6_get_dflt_router(&ipv6_hdr(skb)->saddr, skb->dev);
if (rt)
neigh = rt->dst.neighbour;
neigh = dst_get_neighbour(&rt->dst);
if (rt && lifetime == 0) {
neigh_clone(neigh);
@ -1259,7 +1259,7 @@ static void ndisc_router_discovery(struct sk_buff *skb)
return;
}
neigh = rt->dst.neighbour;
neigh = dst_get_neighbour(&rt->dst);
if (neigh == NULL) {
ND_PRINTK0(KERN_ERR
"ICMPv6 RA: %s() got default router without neighbour.\n",

39
net/ipv6/route.c
View file

@ -356,7 +356,7 @@ static inline struct rt6_info *rt6_device_match(struct net *net,
#ifdef CONFIG_IPV6_ROUTER_PREF
static void rt6_probe(struct rt6_info *rt)
{
struct neighbour *neigh = rt ? rt->dst.neighbour : NULL;
struct neighbour *neigh = rt ? dst_get_neighbour(&rt->dst) : NULL;
/*
* Okay, this does not seem to be appropriate
* for now, however, we need to check if it
@ -404,7 +404,7 @@ static inline int rt6_check_dev(struct rt6_info *rt, int oif)
static inline int rt6_check_neigh(struct rt6_info *rt)
{
struct neighbour *neigh = rt->dst.neighbour;
struct neighbour *neigh = dst_get_neighbour(&rt->dst);
int m;
if (rt->rt6i_flags & RTF_NONEXTHOP ||
!(rt->rt6i_flags & RTF_GATEWAY))
@ -745,7 +745,7 @@ static struct rt6_info *rt6_alloc_cow(struct rt6_info *ort, const struct in6_add
dst_free(&rt->dst);
return NULL;
}
rt->dst.neighbour = neigh;
dst_set_neighbour(&rt->dst, neigh);
}
@ -760,7 +760,7 @@ static struct rt6_info *rt6_alloc_clone(struct rt6_info *ort, const struct in6_a
rt->rt6i_dst.plen = 128;
rt->rt6i_flags |= RTF_CACHE;
rt->dst.flags |= DST_HOST;
rt->dst.neighbour = neigh_clone(ort->dst.neighbour);
dst_set_neighbour(&rt->dst, neigh_clone(dst_get_neighbour(&ort->dst)));
}
return rt;
}
@ -794,7 +794,7 @@ static struct rt6_info *ip6_pol_route(struct net *net, struct fib6_table *table,
dst_hold(&rt->dst);
read_unlock_bh(&table->tb6_lock);
if (!rt->dst.neighbour && !(rt->rt6i_flags & RTF_NONEXTHOP))
if (!dst_get_neighbour(&rt->dst) && !(rt->rt6i_flags & RTF_NONEXTHOP))
nrt = rt6_alloc_cow(rt, &fl6->daddr, &fl6->saddr);
else if (!(rt->dst.flags & DST_HOST))
nrt = rt6_alloc_clone(rt, &fl6->daddr);
@ -1058,7 +1058,7 @@ struct dst_entry *icmp6_dst_alloc(struct net_device *dev,
}
rt->rt6i_idev = idev;
rt->dst.neighbour = neigh;
dst_set_neighbour(&rt->dst, neigh);
atomic_set(&rt->dst.__refcnt, 1);
dst_metric_set(&rt->dst, RTAX_HOPLIMIT, 255);
rt->dst.output = ip6_output;
@ -1338,12 +1338,12 @@ int ip6_route_add(struct fib6_config *cfg)
rt->rt6i_prefsrc.plen = 0;
if (cfg->fc_flags & (RTF_GATEWAY | RTF_NONEXTHOP)) {
rt->dst.neighbour = __neigh_lookup_errno(&nd_tbl, &rt->rt6i_gateway, dev);
if (IS_ERR(rt->dst.neighbour)) {
err = PTR_ERR(rt->dst.neighbour);
rt->dst.neighbour = NULL;
struct neighbour *n = __neigh_lookup_errno(&nd_tbl, &rt->rt6i_gateway, dev);
if (IS_ERR(n)) {
err = PTR_ERR(n);
goto out;
}
dst_set_neighbour(&rt->dst, n);
}
rt->rt6i_flags = cfg->fc_flags;
@ -1574,7 +1574,7 @@ void rt6_redirect(const struct in6_addr *dest, const struct in6_addr *src,
dst_confirm(&rt->dst);
/* Duplicate redirect: silently ignore. */
if (neigh == rt->dst.neighbour)
if (neigh == dst_get_neighbour(&rt->dst))
goto out;
nrt = ip6_rt_copy(rt);
@ -1590,7 +1590,7 @@ void rt6_redirect(const struct in6_addr *dest, const struct in6_addr *src,
nrt->dst.flags |= DST_HOST;
ipv6_addr_copy(&nrt->rt6i_gateway, (struct in6_addr*)neigh->primary_key);
nrt->dst.neighbour = neigh_clone(neigh);
dst_set_neighbour(&nrt->dst, neigh_clone(neigh));
if (ip6_ins_rt(nrt))
goto out;
@ -1670,7 +1670,7 @@ static void rt6_do_pmtu_disc(const struct in6_addr *daddr, const struct in6_addr
1. It is connected route. Action: COW
2. It is gatewayed route or NONEXTHOP route. Action: clone it.
*/
if (!rt->dst.neighbour && !(rt->rt6i_flags & RTF_NONEXTHOP))
if (!dst_get_neighbour(&rt->dst) && !(rt->rt6i_flags & RTF_NONEXTHOP))
nrt = rt6_alloc_cow(rt, daddr, saddr);
else
nrt = rt6_alloc_clone(rt, daddr);
@ -2035,7 +2035,7 @@ struct rt6_info *addrconf_dst_alloc(struct inet6_dev *idev,
return ERR_CAST(neigh);
}
rt->dst.neighbour = neigh;
dst_set_neighbour(&rt->dst, neigh);
ipv6_addr_copy(&rt->rt6i_dst.addr, addr);
rt->rt6i_dst.plen = 128;
@ -2400,8 +2400,8 @@ static int rt6_fill_node(struct net *net,
if (rtnetlink_put_metrics(skb, dst_metrics_ptr(&rt->dst)) < 0)
goto nla_put_failure;
if (rt->dst.neighbour)
NLA_PUT(skb, RTA_GATEWAY, 16, &rt->dst.neighbour->primary_key);
if (dst_get_neighbour(&rt->dst))
NLA_PUT(skb, RTA_GATEWAY, 16, &dst_get_neighbour(&rt->dst)->primary_key);
if (rt->dst.dev)
NLA_PUT_U32(skb, RTA_OIF, rt->rt6i_dev->ifindex);
@ -2585,6 +2585,7 @@ struct rt6_proc_arg
static int rt6_info_route(struct rt6_info *rt, void *p_arg)
{
struct seq_file *m = p_arg;
struct neighbour *n;
seq_printf(m, "%pi6 %02x ", &rt->rt6i_dst.addr, rt->rt6i_dst.plen);
@ -2593,9 +2594,9 @@ static int rt6_info_route(struct rt6_info *rt, void *p_arg)
#else
seq_puts(m, "00000000000000000000000000000000 00 ");
#endif
if (rt->dst.neighbour) {
seq_printf(m, "%pi6", rt->dst.neighbour->primary_key);
n = dst_get_neighbour(&rt->dst);
if (n) {
seq_printf(m, "%pi6", n->primary_key);
} else {
seq_puts(m, "00000000000000000000000000000000");
}

4
net/ipv6/sit.c
View file

@ -677,7 +677,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
struct neighbour *neigh = NULL;
if (skb_dst(skb))
neigh = skb_dst(skb)->neighbour;
neigh = dst_get_neighbour(skb_dst(skb));
if (neigh == NULL) {
if (net_ratelimit())
@ -702,7 +702,7 @@ static netdev_tx_t ipip6_tunnel_xmit(struct sk_buff *skb,
struct neighbour *neigh = NULL;
if (skb_dst(skb))
neigh = skb_dst(skb)->neighbour;
neigh = dst_get_neighbour(skb_dst(skb));
if (neigh == NULL) {
if (net_ratelimit())

4
net/sched/sch_teql.c
View file

@ -229,7 +229,7 @@ __teql_resolve(struct sk_buff *skb, struct sk_buff *skb_res, struct net_device *
{
struct netdev_queue *dev_queue = netdev_get_tx_queue(dev, 0);
struct teql_sched_data *q = qdisc_priv(dev_queue->qdisc);
struct neighbour *mn = skb_dst(skb)->neighbour;
struct neighbour *mn = dst_get_neighbour(skb_dst(skb));
struct neighbour *n = q->ncache;
if (mn->tbl == NULL)
@ -270,7 +270,7 @@ static inline int teql_resolve(struct sk_buff *skb,
if (dev->header_ops == NULL ||
skb_dst(skb) == NULL ||
skb_dst(skb)->neighbour == NULL)
dst_get_neighbour(skb_dst(skb)) == NULL)
return 0;
return __teql_resolve(skb, skb_res, dev);
}

2
net/xfrm/xfrm_policy.c
View file

@ -1497,7 +1497,7 @@ static struct dst_entry *xfrm_bundle_create(struct xfrm_policy *policy,
goto free_dst;
/* Copy neighbour for reachability confirmation */
dst0->neighbour = neigh_clone(dst->neighbour);
dst_set_neighbour(dst0, neigh_clone(dst_get_neighbour(dst)));
xfrm_init_path((struct xfrm_dst *)dst0, dst, nfheader_len);
xfrm_init_pmtu(dst_prev);