Differential D24519 Diff 70904 head/sys/net/radix_mpath.c

Changeset View

Standalone View

head/sys/net/radix_mpath.c

Show First 20 Lines • Show All 50 Lines • ▼ Show 20 Lines
#include <sys/domain.h>		#include <sys/domain.h>
#include <sys/kernel.h>		#include <sys/kernel.h>
#include <sys/syslog.h>		#include <sys/syslog.h>
#include <net/radix.h>		#include <net/radix.h>
#include <net/radix_mpath.h>		#include <net/radix_mpath.h>
#include <sys/rmlock.h>		#include <sys/rmlock.h>
#include <net/route.h>		#include <net/route.h>
#include <net/route_var.h>		#include <net/route_var.h>
		#include <net/route/nhop.h>
#include <net/if.h>		#include <net/if.h>
#include <net/if_var.h>		#include <net/if_var.h>

/*		/*
* give some jitter to hash, to avoid synchronization between routers		* give some jitter to hash, to avoid synchronization between routers
*/		*/
static uint32_t hashjitter;		static uint32_t hashjitter;

Show All 38 Lines	rn_mpath_count(struct radix_node *rn)
}		}
return (i);		return (i);
}		}

struct rtentry *		struct rtentry *
rt_mpath_matchgate(struct rtentry rt, struct sockaddr gate)		rt_mpath_matchgate(struct rtentry rt, struct sockaddr gate)
{		{
struct radix_node *rn;		struct radix_node *rn;
		struct nhop_object *nh;

if (!gate \|\| !rt->rt_gateway)		if (gate == NULL)
return NULL;		return (NULL);

/* beyond here, we use rn as the master copy */		/* beyond here, we use rn as the master copy */
rn = (struct radix_node *)rt;		rn = (struct radix_node *)rt;
do {		do {
rt = (struct rtentry *)rn;		rt = (struct rtentry *)rn;
		nh = rt->rt_nhop;
/*		/*
* we are removing an address alias that has		* we are removing an address alias that has
* the same prefix as another address		* the same prefix as another address
* we need to compare the interface address because		* we need to compare the interface address because
* rt_gateway is a special sockadd_dl structure		* gateway is a special sockaddr_dl structure
*/		*/
if (rt->rt_gateway->sa_family == AF_LINK) {		if (nh->gw_sa.sa_family == AF_LINK) {
if (!memcmp(rt->rt_ifa->ifa_addr, gate, gate->sa_len))		if (!memcmp(nh->nh_ifa->ifa_addr, gate, gate->sa_len))
break;		break;
}		}

/*		/*
* Check for other options:		* Check for other options:
* 1) Routes with 'real' IPv4/IPv6 gateway		* 1) Routes with 'real' IPv4/IPv6 gateway
* 2) Loopback host routes (another AF_LINK/sockadd_dl check)		* 2) Loopback host routes (another AF_LINK/sockadd_dl check)
* */		* */
if (rt->rt_gateway->sa_len == gate->sa_len &&		if (nh->gw_sa.sa_len == gate->sa_len &&
!memcmp(rt->rt_gateway, gate, gate->sa_len))		!memcmp(&nh->gw_sa, gate, gate->sa_len))
break;		break;
} while ((rn = rn_mpath_next(rn)) != NULL);		} while ((rn = rn_mpath_next(rn)) != NULL);

return (struct rtentry *)rn;		return (struct rtentry *)rn;
}		}

/*		/*
* go through the chain and unlink "rt" from the list		* go through the chain and unlink "rt" from the list
▲ Show 20 Lines • Show All 165 Lines • Show Last 20 Lines