diff options
Diffstat (limited to 'net/appletalk/aarp.c')
| -rw-r--r-- | net/appletalk/aarp.c | 139 |
1 files changed, 70 insertions, 69 deletions
diff --git a/net/appletalk/aarp.c b/net/appletalk/aarp.c index 50dce79..173a2e8 100644 --- a/net/appletalk/aarp.c +++ b/net/appletalk/aarp.c @@ -39,6 +39,7 @@ #include <linux/init.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> +#include <linux/export.h> int sysctl_aarp_expiry_time = AARP_EXPIRY_TIME; int sysctl_aarp_tick_time = AARP_TICK_TIME; @@ -779,87 +780,87 @@ static int aarp_rcv(struct sk_buff *skb, struct net_device *dev, } switch (function) { - case AARP_REPLY: - if (!unresolved_count) /* Speed up */ - break; - - /* Find the entry. */ - a = __aarp_find_entry(unresolved[hash], dev, &sa); - if (!a || dev != a->dev) - break; + case AARP_REPLY: + if (!unresolved_count) /* Speed up */ + break; - /* We can fill one in - this is good. */ - memcpy(a->hwaddr, ea->hw_src, ETH_ALEN); - __aarp_resolved(&unresolved[hash], a, hash); - if (!unresolved_count) - mod_timer(&aarp_timer, - jiffies + sysctl_aarp_expiry_time); + /* Find the entry. */ + a = __aarp_find_entry(unresolved[hash], dev, &sa); + if (!a || dev != a->dev) break; - case AARP_REQUEST: - case AARP_PROBE: + /* We can fill one in - this is good. */ + memcpy(a->hwaddr, ea->hw_src, ETH_ALEN); + __aarp_resolved(&unresolved[hash], a, hash); + if (!unresolved_count) + mod_timer(&aarp_timer, + jiffies + sysctl_aarp_expiry_time); + break; + + case AARP_REQUEST: + case AARP_PROBE: + + /* + * If it is my address set ma to my address and reply. + * We can treat probe and request the same. Probe + * simply means we shouldn't cache the querying host, + * as in a probe they are proposing an address not + * using one. + * + * Support for proxy-AARP added. We check if the + * address is one of our proxies before we toss the + * packet out. + */ + + sa.s_node = ea->pa_dst_node; + sa.s_net = ea->pa_dst_net; + + /* See if we have a matching proxy. */ + ma = __aarp_proxy_find(dev, &sa); + if (!ma) + ma = &ifa->address; + else { /* We need to make a copy of the entry. */ + da.s_node = sa.s_node; + da.s_net = sa.s_net; + ma = &da; + } + if (function == AARP_PROBE) { /* - * If it is my address set ma to my address and reply. - * We can treat probe and request the same. Probe - * simply means we shouldn't cache the querying host, - * as in a probe they are proposing an address not - * using one. - * - * Support for proxy-AARP added. We check if the - * address is one of our proxies before we toss the - * packet out. + * A probe implies someone trying to get an + * address. So as a precaution flush any + * entries we have for this address. */ + a = __aarp_find_entry(resolved[sa.s_node % + (AARP_HASH_SIZE - 1)], + skb->dev, &sa); - sa.s_node = ea->pa_dst_node; - sa.s_net = ea->pa_dst_net; - - /* See if we have a matching proxy. */ - ma = __aarp_proxy_find(dev, &sa); - if (!ma) - ma = &ifa->address; - else { /* We need to make a copy of the entry. */ - da.s_node = sa.s_node; - da.s_net = sa.s_net; - ma = &da; - } - - if (function == AARP_PROBE) { - /* - * A probe implies someone trying to get an - * address. So as a precaution flush any - * entries we have for this address. - */ - a = __aarp_find_entry(resolved[sa.s_node % - (AARP_HASH_SIZE - 1)], - skb->dev, &sa); - - /* - * Make it expire next tick - that avoids us - * getting into a probe/flush/learn/probe/ - * flush/learn cycle during probing of a slow - * to respond host addr. - */ - if (a) { - a->expires_at = jiffies - 1; - mod_timer(&aarp_timer, jiffies + - sysctl_aarp_tick_time); - } + /* + * Make it expire next tick - that avoids us + * getting into a probe/flush/learn/probe/ + * flush/learn cycle during probing of a slow + * to respond host addr. + */ + if (a) { + a->expires_at = jiffies - 1; + mod_timer(&aarp_timer, jiffies + + sysctl_aarp_tick_time); } + } - if (sa.s_node != ma->s_node) - break; + if (sa.s_node != ma->s_node) + break; - if (sa.s_net && ma->s_net && sa.s_net != ma->s_net) - break; + if (sa.s_net && ma->s_net && sa.s_net != ma->s_net) + break; - sa.s_node = ea->pa_src_node; - sa.s_net = ea->pa_src_net; + sa.s_node = ea->pa_src_node; + sa.s_net = ea->pa_src_net; - /* aarp_my_address has found the address to use for us. - */ - aarp_send_reply(dev, ma, &sa, ea->hw_src); - break; + /* aarp_my_address has found the address to use for us. + */ + aarp_send_reply(dev, ma, &sa, ea->hw_src); + break; } unlock: |