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zebra: data plane FPM add support RMAC VNI

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Store VNI information in the data plane context so we can use it to
build the FPM netlink update with that information later.

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
This commit is contained in:
Rafael Zalamena 2020-01-13 16:34:03 -03:00
parent 770a8d284c
commit f2a0ba3a50
5 changed files with 77 additions and 12 deletions
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11
lib/nexthop.h
View File

@ -25,6 +25,7 @@
#include "prefix.h"
#include "mpls.h"
#include "vxlan.h"
#ifdef __cplusplus
extern "C" {
@ -60,6 +61,10 @@ enum blackhole_type {
? (type) \
: ((type) | 1)
enum nh_encap_type {
NET_VXLAN = 100, /* value copied from FPM_NH_ENCAP_VXLAN. */
};
/* Nexthop structure. */
struct nexthop {
struct nexthop *next;
@ -123,6 +128,12 @@ struct nexthop {
* only meaningful if the HAS_BACKUP flag is set.
*/
uint8_t backup_idx;
/* Encapsulation information. */
enum nh_encap_type nh_encap_type;
union {
vni_t vni;
} nh_encap;
};
/* Backup index value is limited */

8
zebra/dplane_fpm_nl.c
View File

@ -626,7 +626,7 @@ static int fpm_nl_enqueue(struct fpm_nl_ctx *fnc, struct zebra_dplane_ctx *ctx)
case DPLANE_OP_ROUTE_UPDATE:
case DPLANE_OP_ROUTE_DELETE:
rv = netlink_route_multipath(RTM_DELROUTE, ctx, nl_buf,
sizeof(nl_buf));
sizeof(nl_buf), true);
if (rv <= 0) {
zlog_debug("%s: netlink_route_multipath failed",
__func__);
@ -643,7 +643,7 @@ static int fpm_nl_enqueue(struct fpm_nl_ctx *fnc, struct zebra_dplane_ctx *ctx)
case DPLANE_OP_ROUTE_INSTALL:
rv = netlink_route_multipath(RTM_NEWROUTE, ctx,
&nl_buf[nl_buf_len],
sizeof(nl_buf) - nl_buf_len);
sizeof(nl_buf) - nl_buf_len, true);
if (rv <= 0) {
zlog_debug("%s: netlink_route_multipath failed",
__func__);
@ -829,8 +829,8 @@ static void fpm_enqueue_rmac_table(struct hash_backet *backet, void *arg)
dplane_ctx_reset(fra->ctx);
dplane_ctx_set_op(fra->ctx, DPLANE_OP_MAC_INSTALL);
dplane_mac_init(fra->ctx, fra->zl3vni->vxlan_if,
zif->brslave_info.br_if, vid, &zrmac->macaddr,
zrmac->fwd_info.r_vtep_ip, sticky);
zif->brslave_info.br_if, vid,
&zrmac->macaddr, zrmac->fwd_info.r_vtep_ip, sticky);
if (fpm_nl_enqueue(fra->fnc, fra->ctx) == -1) {
thread_add_timer(zrouter.master, fpm_rmac_send,
fra->fnc, 1, &fra->fnc->t_rmacwalk);

46
zebra/rt_netlink.c
View File

@ -1528,11 +1528,28 @@ static bool nexthop_set_src(const struct nexthop *nexthop, int family,
return false;
}
static void netlink_route_nexthop_encap(struct nlmsghdr *n, size_t nlen,
struct nexthop *nh)
{
struct rtattr *nest;
switch (nh->nh_encap_type) {
case NET_VXLAN:
addattr_l(n, nlen, RTA_ENCAP_TYPE, &nh->nh_encap_type,
sizeof(uint16_t));
nest = addattr_nest(n, nlen, RTA_ENCAP);
addattr32(n, nlen, 0 /* VXLAN_VNI */, nh->nh_encap.vni);
addattr_nest_end(n, nest);
break;
}
}
/*
* Routing table change via netlink interface, using a dataplane context object
*/
ssize_t netlink_route_multipath(int cmd, struct zebra_dplane_ctx *ctx,
uint8_t *data, size_t datalen)
uint8_t *data, size_t datalen, bool fpm)
{
int bytelen;
struct nexthop *nexthop = NULL;
@ -1744,7 +1761,16 @@ ssize_t netlink_route_multipath(int cmd, struct zebra_dplane_ctx *ctx,
nexthop_num++;
break;
}
/*
* Add encapsulation information when installing via
* FPM.
*/
if (fpm)
netlink_route_nexthop_encap(&req->n, datalen,
nexthop);
}
if (setsrc) {
if (p->family == AF_INET)
addattr_l(&req->n, datalen, RTA_PREFSRC,
@ -1796,7 +1822,16 @@ ssize_t netlink_route_multipath(int cmd, struct zebra_dplane_ctx *ctx,
setsrc = 1;
}
}
/*
* Add encapsulation information when installing via
* FPM.
*/
if (fpm)
netlink_route_nexthop_encap(&req->n, datalen,
nexthop);
}
if (setsrc) {
if (p->family == AF_INET)
addattr_l(&req->n, datalen, RTA_PREFSRC,
@ -2149,7 +2184,8 @@ enum zebra_dplane_result kernel_route_update(struct zebra_dplane_ctx *ctx)
if (RSYSTEM_ROUTE(dplane_ctx_get_type(ctx)) &&
!RSYSTEM_ROUTE(dplane_ctx_get_old_type(ctx))) {
netlink_route_multipath(RTM_DELROUTE, ctx,
nl_pkt, sizeof(nl_pkt));
nl_pkt, sizeof(nl_pkt),
false);
netlink_talk_info(netlink_talk_filter,
(struct nlmsghdr *)nl_pkt,
dplane_ctx_get_ns(ctx), 0);
@ -2169,7 +2205,8 @@ enum zebra_dplane_result kernel_route_update(struct zebra_dplane_ctx *ctx)
*/
if (!RSYSTEM_ROUTE(dplane_ctx_get_old_type(ctx))) {
netlink_route_multipath(RTM_DELROUTE, ctx,
nl_pkt, sizeof(nl_pkt));
nl_pkt, sizeof(nl_pkt),
false);
netlink_talk_info(netlink_talk_filter,
(struct nlmsghdr *)nl_pkt,
dplane_ctx_get_ns(ctx), 0);
@ -2182,7 +2219,8 @@ enum zebra_dplane_result kernel_route_update(struct zebra_dplane_ctx *ctx)
}
if (!RSYSTEM_ROUTE(dplane_ctx_get_type(ctx))) {
netlink_route_multipath(cmd, ctx, nl_pkt, sizeof(nl_pkt));
netlink_route_multipath(cmd, ctx, nl_pkt, sizeof(nl_pkt),
false);
ret = netlink_talk_info(netlink_talk_filter,
(struct nlmsghdr *)nl_pkt,
dplane_ctx_get_ns(ctx), 0);

3
zebra/rt_netlink.h
View File

@ -67,7 +67,8 @@ void rt_netlink_init(void);
extern int netlink_mpls_multipath(int cmd, struct zebra_dplane_ctx *ctx);
extern ssize_t netlink_route_multipath(int cmd, struct zebra_dplane_ctx *ctx,
uint8_t *data, size_t datalen);
uint8_t *data, size_t datalen,
bool fpm);
extern ssize_t netlink_macfdb_update_ctx(struct zebra_dplane_ctx *ctx,
uint8_t *data, size_t datalen);

21
zebra/zebra_dplane.c
View File

@ -32,6 +32,7 @@
#include "zebra/zebra_memory.h"
#include "zebra/zebra_router.h"
#include "zebra/zebra_dplane.h"
#include "zebra/zebra_vxlan_private.h"
#include "zebra/rt.h"
#include "zebra/debug.h"
@ -178,7 +179,6 @@ struct dplane_mac_info {
struct ethaddr mac;
struct in_addr vtep_ip;
bool is_sticky;
};
/*
@ -1535,6 +1535,7 @@ int dplane_ctx_route_init(struct zebra_dplane_ctx *ctx, enum dplane_op_e op,
struct zebra_ns *zns;
struct zebra_vrf *zvrf;
struct nexthop *nexthop;
zebra_l3vni_t *zl3vni;
if (!ctx || !rn || !re)
goto done;
@ -1584,10 +1585,24 @@ int dplane_ctx_route_init(struct zebra_dplane_ctx *ctx, enum dplane_op_e op,
re->nhe->backup_info->nhe->nhg.nexthop, NULL);
}
/* Ensure that the dplane nexthops' flags are clear. */
for (ALL_NEXTHOPS(ctx->u.rinfo.zd_ng, nexthop))
/*
* Ensure that the dplane nexthops' flags are clear and copy
* encapsulation information.
*/
for (ALL_NEXTHOPS(ctx->u.rinfo.zd_ng, nexthop)) {
UNSET_FLAG(nexthop->flags, NEXTHOP_FLAG_FIB);
/* Check for available encapsulations. */
if (!CHECK_FLAG(re->flags, ZEBRA_FLAG_EVPN_ROUTE))
continue;
zl3vni = zl3vni_from_vrf(nexthop->vrf_id);
if (zl3vni && is_l3vni_oper_up(zl3vni)) {
nexthop->nh_encap_type = NET_VXLAN;
nexthop->nh_encap.vni = zl3vni->vni;
}
}
/* Don't need some info when capturing a system notification */
if (op == DPLANE_OP_SYS_ROUTE_ADD ||
op == DPLANE_OP_SYS_ROUTE_DELETE) {