diff options
Diffstat (limited to 'net/ipv4/arp.c')
-rw-r--r-- | net/ipv4/arp.c | 66 |
1 files changed, 33 insertions, 33 deletions
diff --git a/net/ipv4/arp.c b/net/ipv4/arp.c index 3981e8be9ab8..a58afde4f72f 100644 --- a/net/ipv4/arp.c +++ b/net/ipv4/arp.c | |||
@@ -15,9 +15,9 @@ | |||
15 | * 2 of the License, or (at your option) any later version. | 15 | * 2 of the License, or (at your option) any later version. |
16 | * | 16 | * |
17 | * Fixes: | 17 | * Fixes: |
18 | * Alan Cox : Removed the Ethernet assumptions in | 18 | * Alan Cox : Removed the Ethernet assumptions in |
19 | * Florian's code | 19 | * Florian's code |
20 | * Alan Cox : Fixed some small errors in the ARP | 20 | * Alan Cox : Fixed some small errors in the ARP |
21 | * logic | 21 | * logic |
22 | * Alan Cox : Allow >4K in /proc | 22 | * Alan Cox : Allow >4K in /proc |
23 | * Alan Cox : Make ARP add its own protocol entry | 23 | * Alan Cox : Make ARP add its own protocol entry |
@@ -39,18 +39,18 @@ | |||
39 | * Jonathan Naylor : Only lookup the hardware address for | 39 | * Jonathan Naylor : Only lookup the hardware address for |
40 | * the correct hardware type. | 40 | * the correct hardware type. |
41 | * Germano Caronni : Assorted subtle races. | 41 | * Germano Caronni : Assorted subtle races. |
42 | * Craig Schlenter : Don't modify permanent entry | 42 | * Craig Schlenter : Don't modify permanent entry |
43 | * during arp_rcv. | 43 | * during arp_rcv. |
44 | * Russ Nelson : Tidied up a few bits. | 44 | * Russ Nelson : Tidied up a few bits. |
45 | * Alexey Kuznetsov: Major changes to caching and behaviour, | 45 | * Alexey Kuznetsov: Major changes to caching and behaviour, |
46 | * eg intelligent arp probing and | 46 | * eg intelligent arp probing and |
47 | * generation | 47 | * generation |
48 | * of host down events. | 48 | * of host down events. |
49 | * Alan Cox : Missing unlock in device events. | 49 | * Alan Cox : Missing unlock in device events. |
50 | * Eckes : ARP ioctl control errors. | 50 | * Eckes : ARP ioctl control errors. |
51 | * Alexey Kuznetsov: Arp free fix. | 51 | * Alexey Kuznetsov: Arp free fix. |
52 | * Manuel Rodriguez: Gratuitous ARP. | 52 | * Manuel Rodriguez: Gratuitous ARP. |
53 | * Jonathan Layes : Added arpd support through kerneld | 53 | * Jonathan Layes : Added arpd support through kerneld |
54 | * message queue (960314) | 54 | * message queue (960314) |
55 | * Mike Shaver : /proc/sys/net/ipv4/arp_* support | 55 | * Mike Shaver : /proc/sys/net/ipv4/arp_* support |
56 | * Mike McLagan : Routing by source | 56 | * Mike McLagan : Routing by source |
@@ -210,7 +210,7 @@ int arp_mc_map(__be32 addr, u8 *haddr, struct net_device *dev, int dir) | |||
210 | case ARPHRD_FDDI: | 210 | case ARPHRD_FDDI: |
211 | case ARPHRD_IEEE802: | 211 | case ARPHRD_IEEE802: |
212 | ip_eth_mc_map(addr, haddr); | 212 | ip_eth_mc_map(addr, haddr); |
213 | return 0; | 213 | return 0; |
214 | case ARPHRD_IEEE802_TR: | 214 | case ARPHRD_IEEE802_TR: |
215 | ip_tr_mc_map(addr, haddr); | 215 | ip_tr_mc_map(addr, haddr); |
216 | return 0; | 216 | return 0; |
@@ -288,7 +288,7 @@ static int arp_constructor(struct neighbour *neigh) | |||
288 | switch (dev->type) { | 288 | switch (dev->type) { |
289 | default: | 289 | default: |
290 | break; | 290 | break; |
291 | case ARPHRD_ROSE: | 291 | case ARPHRD_ROSE: |
292 | #if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) | 292 | #if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) |
293 | case ARPHRD_AX25: | 293 | case ARPHRD_AX25: |
294 | #if defined(CONFIG_NETROM) || defined(CONFIG_NETROM_MODULE) | 294 | #if defined(CONFIG_NETROM) || defined(CONFIG_NETROM_MODULE) |
@@ -425,18 +425,18 @@ static int arp_filter(__be32 sip, __be32 tip, struct net_device *dev) | |||
425 | struct flowi fl = { .nl_u = { .ip4_u = { .daddr = sip, | 425 | struct flowi fl = { .nl_u = { .ip4_u = { .daddr = sip, |
426 | .saddr = tip } } }; | 426 | .saddr = tip } } }; |
427 | struct rtable *rt; | 427 | struct rtable *rt; |
428 | int flag = 0; | 428 | int flag = 0; |
429 | /*unsigned long now; */ | 429 | /*unsigned long now; */ |
430 | 430 | ||
431 | if (ip_route_output_key(&rt, &fl) < 0) | 431 | if (ip_route_output_key(&rt, &fl) < 0) |
432 | return 1; | 432 | return 1; |
433 | if (rt->u.dst.dev != dev) { | 433 | if (rt->u.dst.dev != dev) { |
434 | NET_INC_STATS_BH(LINUX_MIB_ARPFILTER); | 434 | NET_INC_STATS_BH(LINUX_MIB_ARPFILTER); |
435 | flag = 1; | 435 | flag = 1; |
436 | } | 436 | } |
437 | ip_rt_put(rt); | 437 | ip_rt_put(rt); |
438 | return flag; | 438 | return flag; |
439 | } | 439 | } |
440 | 440 | ||
441 | /* OBSOLETE FUNCTIONS */ | 441 | /* OBSOLETE FUNCTIONS */ |
442 | 442 | ||
@@ -490,7 +490,7 @@ int arp_find(unsigned char *haddr, struct sk_buff *skb) | |||
490 | n->used = jiffies; | 490 | n->used = jiffies; |
491 | if (n->nud_state&NUD_VALID || neigh_event_send(n, skb) == 0) { | 491 | if (n->nud_state&NUD_VALID || neigh_event_send(n, skb) == 0) { |
492 | read_lock_bh(&n->lock); | 492 | read_lock_bh(&n->lock); |
493 | memcpy(haddr, n->ha, dev->addr_len); | 493 | memcpy(haddr, n->ha, dev->addr_len); |
494 | read_unlock_bh(&n->lock); | 494 | read_unlock_bh(&n->lock); |
495 | neigh_release(n); | 495 | neigh_release(n); |
496 | return 0; | 496 | return 0; |
@@ -572,7 +572,7 @@ struct sk_buff *arp_create(int type, int ptype, __be32 dest_ip, | |||
572 | /* | 572 | /* |
573 | * Allocate a buffer | 573 | * Allocate a buffer |
574 | */ | 574 | */ |
575 | 575 | ||
576 | skb = alloc_skb(sizeof(struct arphdr)+ 2*(dev->addr_len+4) | 576 | skb = alloc_skb(sizeof(struct arphdr)+ 2*(dev->addr_len+4) |
577 | + LL_RESERVED_SPACE(dev), GFP_ATOMIC); | 577 | + LL_RESERVED_SPACE(dev), GFP_ATOMIC); |
578 | if (skb == NULL) | 578 | if (skb == NULL) |
@@ -685,7 +685,7 @@ void arp_send(int type, int ptype, __be32 dest_ip, | |||
685 | /* | 685 | /* |
686 | * No arp on this interface. | 686 | * No arp on this interface. |
687 | */ | 687 | */ |
688 | 688 | ||
689 | if (dev->flags&IFF_NOARP) | 689 | if (dev->flags&IFF_NOARP) |
690 | return; | 690 | return; |
691 | 691 | ||
@@ -725,7 +725,7 @@ static int arp_process(struct sk_buff *skb) | |||
725 | arp = skb->nh.arph; | 725 | arp = skb->nh.arph; |
726 | 726 | ||
727 | switch (dev_type) { | 727 | switch (dev_type) { |
728 | default: | 728 | default: |
729 | if (arp->ar_pro != htons(ETH_P_IP) || | 729 | if (arp->ar_pro != htons(ETH_P_IP) || |
730 | htons(dev_type) != arp->ar_hrd) | 730 | htons(dev_type) != arp->ar_hrd) |
731 | goto out; | 731 | goto out; |
@@ -792,7 +792,7 @@ static int arp_process(struct sk_buff *skb) | |||
792 | tha = arp_ptr; | 792 | tha = arp_ptr; |
793 | arp_ptr += dev->addr_len; | 793 | arp_ptr += dev->addr_len; |
794 | memcpy(&tip, arp_ptr, 4); | 794 | memcpy(&tip, arp_ptr, 4); |
795 | /* | 795 | /* |
796 | * Check for bad requests for 127.x.x.x and requests for multicast | 796 | * Check for bad requests for 127.x.x.x and requests for multicast |
797 | * addresses. If this is one such, delete it. | 797 | * addresses. If this is one such, delete it. |
798 | */ | 798 | */ |
@@ -809,16 +809,16 @@ static int arp_process(struct sk_buff *skb) | |||
809 | * Process entry. The idea here is we want to send a reply if it is a | 809 | * Process entry. The idea here is we want to send a reply if it is a |
810 | * request for us or if it is a request for someone else that we hold | 810 | * request for us or if it is a request for someone else that we hold |
811 | * a proxy for. We want to add an entry to our cache if it is a reply | 811 | * a proxy for. We want to add an entry to our cache if it is a reply |
812 | * to us or if it is a request for our address. | 812 | * to us or if it is a request for our address. |
813 | * (The assumption for this last is that if someone is requesting our | 813 | * (The assumption for this last is that if someone is requesting our |
814 | * address, they are probably intending to talk to us, so it saves time | 814 | * address, they are probably intending to talk to us, so it saves time |
815 | * if we cache their address. Their address is also probably not in | 815 | * if we cache their address. Their address is also probably not in |
816 | * our cache, since ours is not in their cache.) | 816 | * our cache, since ours is not in their cache.) |
817 | * | 817 | * |
818 | * Putting this another way, we only care about replies if they are to | 818 | * Putting this another way, we only care about replies if they are to |
819 | * us, in which case we add them to the cache. For requests, we care | 819 | * us, in which case we add them to the cache. For requests, we care |
820 | * about those for us and those for our proxies. We reply to both, | 820 | * about those for us and those for our proxies. We reply to both, |
821 | * and in the case of requests for us we add the requester to the arp | 821 | * and in the case of requests for us we add the requester to the arp |
822 | * cache. | 822 | * cache. |
823 | */ | 823 | */ |
824 | 824 | ||
@@ -845,7 +845,7 @@ static int arp_process(struct sk_buff *skb) | |||
845 | if (!dont_send) | 845 | if (!dont_send) |
846 | dont_send |= arp_ignore(in_dev,dev,sip,tip); | 846 | dont_send |= arp_ignore(in_dev,dev,sip,tip); |
847 | if (!dont_send && IN_DEV_ARPFILTER(in_dev)) | 847 | if (!dont_send && IN_DEV_ARPFILTER(in_dev)) |
848 | dont_send |= arp_filter(sip,tip,dev); | 848 | dont_send |= arp_filter(sip,tip,dev); |
849 | if (!dont_send) | 849 | if (!dont_send) |
850 | arp_send(ARPOP_REPLY,ETH_P_ARP,sip,dev,tip,sha,dev->dev_addr,sha); | 850 | arp_send(ARPOP_REPLY,ETH_P_ARP,sip,dev,tip,sha,dev->dev_addr,sha); |
851 | 851 | ||
@@ -860,7 +860,7 @@ static int arp_process(struct sk_buff *skb) | |||
860 | if (n) | 860 | if (n) |
861 | neigh_release(n); | 861 | neigh_release(n); |
862 | 862 | ||
863 | if (NEIGH_CB(skb)->flags & LOCALLY_ENQUEUED || | 863 | if (NEIGH_CB(skb)->flags & LOCALLY_ENQUEUED || |
864 | skb->pkt_type == PACKET_HOST || | 864 | skb->pkt_type == PACKET_HOST || |
865 | in_dev->arp_parms->proxy_delay == 0) { | 865 | in_dev->arp_parms->proxy_delay == 0) { |
866 | arp_send(ARPOP_REPLY,ETH_P_ARP,sip,dev,tip,sha,dev->dev_addr,sha); | 866 | arp_send(ARPOP_REPLY,ETH_P_ARP,sip,dev,tip,sha,dev->dev_addr,sha); |
@@ -1039,7 +1039,7 @@ static int arp_req_set(struct arpreq *r, struct net_device * dev) | |||
1039 | if (r->arp_flags & ATF_PERM) | 1039 | if (r->arp_flags & ATF_PERM) |
1040 | state = NUD_PERMANENT; | 1040 | state = NUD_PERMANENT; |
1041 | err = neigh_update(neigh, (r->arp_flags&ATF_COM) ? | 1041 | err = neigh_update(neigh, (r->arp_flags&ATF_COM) ? |
1042 | r->arp_ha.sa_data : NULL, state, | 1042 | r->arp_ha.sa_data : NULL, state, |
1043 | NEIGH_UPDATE_F_OVERRIDE| | 1043 | NEIGH_UPDATE_F_OVERRIDE| |
1044 | NEIGH_UPDATE_F_ADMIN); | 1044 | NEIGH_UPDATE_F_ADMIN); |
1045 | neigh_release(neigh); | 1045 | neigh_release(neigh); |
@@ -1121,7 +1121,7 @@ static int arp_req_delete(struct arpreq *r, struct net_device * dev) | |||
1121 | neigh = neigh_lookup(&arp_tbl, &ip, dev); | 1121 | neigh = neigh_lookup(&arp_tbl, &ip, dev); |
1122 | if (neigh) { | 1122 | if (neigh) { |
1123 | if (neigh->nud_state&~NUD_NOARP) | 1123 | if (neigh->nud_state&~NUD_NOARP) |
1124 | err = neigh_update(neigh, NULL, NUD_FAILED, | 1124 | err = neigh_update(neigh, NULL, NUD_FAILED, |
1125 | NEIGH_UPDATE_F_OVERRIDE| | 1125 | NEIGH_UPDATE_F_OVERRIDE| |
1126 | NEIGH_UPDATE_F_ADMIN); | 1126 | NEIGH_UPDATE_F_ADMIN); |
1127 | neigh_release(neigh); | 1127 | neigh_release(neigh); |
@@ -1181,7 +1181,7 @@ int arp_ioctl(unsigned int cmd, void __user *arg) | |||
1181 | 1181 | ||
1182 | switch(cmd) { | 1182 | switch(cmd) { |
1183 | case SIOCDARP: | 1183 | case SIOCDARP: |
1184 | err = arp_req_delete(&r, dev); | 1184 | err = arp_req_delete(&r, dev); |
1185 | break; | 1185 | break; |
1186 | case SIOCSARP: | 1186 | case SIOCSARP: |
1187 | err = arp_req_set(&r, dev); | 1187 | err = arp_req_set(&r, dev); |
@@ -1268,14 +1268,14 @@ static char *ax2asc2(ax25_address *a, char *buf) | |||
1268 | 1268 | ||
1269 | if (c != ' ') *s++ = c; | 1269 | if (c != ' ') *s++ = c; |
1270 | } | 1270 | } |
1271 | 1271 | ||
1272 | *s++ = '-'; | 1272 | *s++ = '-'; |
1273 | 1273 | ||
1274 | if ((n = ((a->ax25_call[6] >> 1) & 0x0F)) > 9) { | 1274 | if ((n = ((a->ax25_call[6] >> 1) & 0x0F)) > 9) { |
1275 | *s++ = '1'; | 1275 | *s++ = '1'; |
1276 | n -= 10; | 1276 | n -= 10; |
1277 | } | 1277 | } |
1278 | 1278 | ||
1279 | *s++ = n + '0'; | 1279 | *s++ = n + '0'; |
1280 | *s++ = '\0'; | 1280 | *s++ = '\0'; |
1281 | 1281 | ||
@@ -1373,7 +1373,7 @@ static int arp_seq_open(struct inode *inode, struct file *file) | |||
1373 | struct seq_file *seq; | 1373 | struct seq_file *seq; |
1374 | int rc = -ENOMEM; | 1374 | int rc = -ENOMEM; |
1375 | struct neigh_seq_state *s = kzalloc(sizeof(*s), GFP_KERNEL); | 1375 | struct neigh_seq_state *s = kzalloc(sizeof(*s), GFP_KERNEL); |
1376 | 1376 | ||
1377 | if (!s) | 1377 | if (!s) |
1378 | goto out; | 1378 | goto out; |
1379 | 1379 | ||