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Add fibnum, family and vnet pointer to each rib head.

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Having metadata such as fibnum or vnet in the struct rib_head
 is handy as it eases building functionality in the routing space.
This change is required to properly bring back route redirect support.

Reviewed by:	bz
MFC after:	3 weeks
Differential Revision:	https://reviews.freebsd.org/D23047
This commit is contained in:
Alexander V. Chernikov 2020-01-09 17:21:00 +00:00
parent 0b4da9c8e4
commit ead85fe415
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=356559
10 changed files with 31 additions and 20 deletions
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12
sys/net/radix_mpath.c
View File

@ -290,17 +290,17 @@ rtalloc_mpath_fib(struct route *ro, uint32_t hash, u_int fibnum)
RT_UNLOCK(ro->ro_rt);
}
extern int in6_inithead(void **head, int off);
extern int in_inithead(void **head, int off);
extern int in6_inithead(void **head, int off, u_int fibnum);
extern int in_inithead(void **head, int off, u_int fibnum);
#ifdef INET
int
rn4_mpath_inithead(void **head, int off)
rn4_mpath_inithead(void **head, int off, u_int fibnum)
{
struct rib_head *rnh;
hashjitter = arc4random();
if (in_inithead(head, off) == 1) {
if (in_inithead(head, off, fibnum) == 1) {
rnh = (struct rib_head *)*head;
rnh->rnh_multipath = 1;
return 1;
@ -311,12 +311,12 @@ rn4_mpath_inithead(void **head, int off)
#ifdef INET6
int
rn6_mpath_inithead(void **head, int off)
rn6_mpath_inithead(void **head, int off, u_int fibnum)
{
struct rib_head *rnh;
hashjitter = arc4random();
if (in6_inithead(head, off) == 1) {
if (in6_inithead(head, off, fibnum) == 1) {
rnh = (struct rib_head *)*head;
rnh->rnh_multipath = 1;
return 1;

4
sys/net/radix_mpath.h
View File

@ -57,8 +57,8 @@ int rt_mpath_conflict(struct rib_head *, struct rtentry *,
void rtalloc_mpath_fib(struct route *, u_int32_t, u_int);
struct rtentry *rt_mpath_select(struct rtentry *, uint32_t);
int rt_mpath_deldup(struct rtentry *, struct rtentry *);
int rn4_mpath_inithead(void **, int);
int rn6_mpath_inithead(void **, int);
int rn4_mpath_inithead(void **, int, u_int);
int rn6_mpath_inithead(void **, int, u_int);
#endif

11
sys/net/route.c
View File

@ -304,7 +304,7 @@ vnet_route_init(const void *unused __unused)
rnh = rt_tables_get_rnh_ptr(table, fam);
if (rnh == NULL)
panic("%s: rnh NULL", __func__);
dom->dom_rtattach((void **)rnh, 0);
dom->dom_rtattach((void **)rnh, 0, table);
}
}
}
@ -345,7 +345,7 @@ VNET_SYSUNINIT(vnet_route_uninit, SI_SUB_PROTO_DOMAIN, SI_ORDER_FIRST,
#endif
struct rib_head *
rt_table_init(int offset)
rt_table_init(int offset, int family, u_int fibnum)
{
struct rib_head *rh;
@ -357,6 +357,13 @@ rt_table_init(int offset)
rn_inithead_internal(&rh->rmhead.head, rh->rmhead.mask_nodes, 0);
rh->head.rnh_masks = &rh->rmhead;
/* Save metadata associated with this routing table. */
rh->rib_family = family;
rh->rib_fibnum = fibnum;
#ifdef VIMAGE
rh->rib_vnet = curvnet;
#endif
/* Init locks */
RIB_LOCK_INIT(rh);

2
sys/net/route.h
View File

@ -455,7 +455,7 @@ int rt_routemsg_info(int, struct rt_addrinfo *, int);
void rt_newmaddrmsg(int, struct ifmultiaddr *);
int rt_setgate(struct rtentry *, struct sockaddr *, struct sockaddr *);
void rt_maskedcopy(struct sockaddr *, struct sockaddr *, struct sockaddr *);
struct rib_head *rt_table_init(int);
struct rib_head *rt_table_init(int, int, u_int);
void rt_table_destroy(struct rib_head *);
u_int rt_tables_get_gen(int table, int fam);

3
sys/net/route_var.h
View File

@ -46,6 +46,9 @@ struct rib_head {
struct radix_node rnh_nodes[3]; /* empty tree for common case */
struct rmlock rib_lock; /* config/data path lock */
struct radix_mask_head rmhead; /* masks radix head */
struct vnet *rib_vnet; /* vnet pointer */
int rib_family; /* AF of the rtable */
u_int rib_fibnum; /* fib number */
};
#define RIB_RLOCK_TRACKER struct rm_priotracker _rib_tracker

2
sys/netinet/in_proto.c
View File

@ -297,7 +297,7 @@ IPPROTOSPACER,
},
};
extern int in_inithead(void **, int);
extern int in_inithead(void **, int, u_int);
extern int in_detachhead(void **, int);
struct domain inetdomain = {

6
sys/netinet/in_rmx.c
View File

@ -49,7 +49,7 @@ __FBSDID("$FreeBSD$");
#include <netinet/ip_icmp.h>
#include <netinet/ip_var.h>
extern int in_inithead(void **head, int off);
extern int in_inithead(void **head, int off, u_int fibnum);
#ifdef VIMAGE
extern int in_detachhead(void **head, int off);
#endif
@ -116,11 +116,11 @@ static int _in_rt_was_here;
* Initialize our routing tree.
*/
int
in_inithead(void **head, int off)
in_inithead(void **head, int off, u_int fibnum)
{
struct rib_head *rh;
rh = rt_table_init(32);
rh = rt_table_init(32, AF_INET, fibnum);
if (rh == NULL)
return (0);

2
sys/netinet6/in6_proto.c
View File

@ -336,7 +336,7 @@ IP6PROTOSPACER,
},
};
extern int in6_inithead(void **, int);
extern int in6_inithead(void **, int, u_int);
#ifdef VIMAGE
extern int in6_detachhead(void **, int);
#endif

7
sys/netinet6/in6_rmx.c
View File

@ -96,7 +96,7 @@ __FBSDID("$FreeBSD$");
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
extern int in6_inithead(void **head, int off);
extern int in6_inithead(void **head, int off, u_int fibnum);
#ifdef VIMAGE
extern int in6_detachhead(void **head, int off);
#endif
@ -157,11 +157,12 @@ in6_addroute(void *v_arg, void *n_arg, struct radix_head *head,
*/
int
in6_inithead(void **head, int off)
in6_inithead(void **head, int off, u_int fibnum)
{
struct rib_head *rh;
rh = rt_table_init(offsetof(struct sockaddr_in6, sin6_addr) << 3);
rh = rt_table_init(offsetof(struct sockaddr_in6, sin6_addr) << 3,
AF_INET6, fibnum);
if (rh == NULL)
return (0);

2
sys/sys/domain.h
View File

@ -60,7 +60,7 @@ struct domain {
struct protosw *dom_protosw, *dom_protoswNPROTOSW;
struct domain *dom_next;
int (*dom_rtattach) /* initialize routing table */
(void **, int);
(void **, int, u_int);
int (*dom_rtdetach) /* clean up routing table */
(void **, int);
void *(*dom_ifattach)(struct ifnet *);