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zebra: convert LSP nhlfe lists to use typesafe lists

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Convert the embedded lists of nhlfes and snhlfes in zebra LSPs
and SLSPs to use typesafe dlists.

Signed-off-by: Mark Stapp <mjs@voltanet.io>
This commit is contained in:
Mark Stapp 2020-05-19 14:11:32 -04:00
parent 55add95cd7
commit ee70f62979
6 changed files with 137 additions and 120 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
zebra/rt_netlink.c
View File

@ -3504,6 +3504,7 @@ enum zebra_dplane_result kernel_neigh_update_ctx(struct zebra_dplane_ctx *ctx)
int netlink_mpls_multipath(int cmd, struct zebra_dplane_ctx *ctx)
{
mpls_lse_t lse;
const struct nhlfe_list_head *head;
const zebra_nhlfe_t *nhlfe;
struct nexthop *nexthop = NULL;
unsigned int nexthop_num;
@ -3524,7 +3525,8 @@ int netlink_mpls_multipath(int cmd, struct zebra_dplane_ctx *ctx)
* or multipath case.
*/
nexthop_num = 0;
for (nhlfe = dplane_ctx_get_nhlfe(ctx); nhlfe; nhlfe = nhlfe->next) {
head = dplane_ctx_get_nhlfe_list(ctx);
frr_each(nhlfe_list_const, head, nhlfe) {
nexthop = nhlfe->nexthop;
if (!nexthop)
continue;
@ -3579,8 +3581,7 @@ int netlink_mpls_multipath(int cmd, struct zebra_dplane_ctx *ctx)
routedesc);
nexthop_num = 0;
for (nhlfe = dplane_ctx_get_nhlfe(ctx);
nhlfe; nhlfe = nhlfe->next) {
frr_each(nhlfe_list_const, head, nhlfe) {
nexthop = nhlfe->nexthop;
if (!nexthop)
continue;
@ -3618,8 +3619,7 @@ int netlink_mpls_multipath(int cmd, struct zebra_dplane_ctx *ctx)
routedesc);
nexthop_num = 0;
for (nhlfe = dplane_ctx_get_nhlfe(ctx);
nhlfe; nhlfe = nhlfe->next) {
frr_each(nhlfe_list_const, head, nhlfe) {
nexthop = nhlfe->nexthop;
if (!nexthop)
continue;

21
zebra/zebra_dplane.c
View File

@ -33,6 +33,7 @@
#include "zebra/zebra_router.h"
#include "zebra/zebra_dplane.h"
#include "zebra/zebra_vxlan_private.h"
#include "zebra/zebra_mpls.h"
#include "zebra/rt.h"
#include "zebra/debug.h"
@ -510,19 +511,16 @@ static void dplane_ctx_free_internal(struct zebra_dplane_ctx *ctx)
case DPLANE_OP_LSP_DELETE:
case DPLANE_OP_LSP_NOTIFY:
{
zebra_nhlfe_t *nhlfe, *next;
zebra_nhlfe_t *nhlfe;
/* Free allocated NHLFEs */
for (nhlfe = ctx->u.lsp.nhlfe_list; nhlfe; nhlfe = next) {
next = nhlfe->next;
frr_each_safe(nhlfe_list, &ctx->u.lsp.nhlfe_list, nhlfe)
zebra_mpls_nhlfe_del(nhlfe);
}
/* Clear pointers in lsp struct, in case we're cacheing
* free context structs.
*/
ctx->u.lsp.nhlfe_list = NULL;
nhlfe_list_init(&ctx->u.lsp.nhlfe_list);
ctx->u.lsp.best_nhlfe = NULL;
break;
@ -1217,11 +1215,11 @@ void dplane_ctx_set_lsp_flags(struct zebra_dplane_ctx *ctx,
ctx->u.lsp.flags = flags;
}
const zebra_nhlfe_t *dplane_ctx_get_nhlfe(const struct zebra_dplane_ctx *ctx)
const struct nhlfe_list_head *dplane_ctx_get_nhlfe_list(
const struct zebra_dplane_ctx *ctx)
{
DPLANE_CTX_VALID(ctx);
return ctx->u.lsp.nhlfe_list;
return &(ctx->u.lsp.nhlfe_list);
}
zebra_nhlfe_t *dplane_ctx_add_nhlfe(struct zebra_dplane_ctx *ctx,
@ -1230,7 +1228,7 @@ zebra_nhlfe_t *dplane_ctx_add_nhlfe(struct zebra_dplane_ctx *ctx,
union g_addr *gate,
ifindex_t ifindex,
uint8_t num_labels,
mpls_label_t out_labels[])
mpls_label_t *out_labels)
{
zebra_nhlfe_t *nhlfe;
@ -1729,13 +1727,14 @@ static int dplane_ctx_lsp_init(struct zebra_dplane_ctx *ctx,
memset(&ctx->u.lsp, 0, sizeof(ctx->u.lsp));
nhlfe_list_init(&(ctx->u.lsp.nhlfe_list));
ctx->u.lsp.ile = lsp->ile;
ctx->u.lsp.addr_family = lsp->addr_family;
ctx->u.lsp.num_ecmp = lsp->num_ecmp;
ctx->u.lsp.flags = lsp->flags;
/* Copy source LSP's nhlfes, and capture 'best' nhlfe */
for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) {
frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) {
/* Not sure if this is meaningful... */
if (nhlfe->nexthop == NULL)
continue;

5
zebra/zebra_dplane.h
View File

@ -310,14 +310,15 @@ void dplane_ctx_set_addr_family(struct zebra_dplane_ctx *ctx,
uint32_t dplane_ctx_get_lsp_flags(const struct zebra_dplane_ctx *ctx);
void dplane_ctx_set_lsp_flags(struct zebra_dplane_ctx *ctx,
uint32_t flags);
const zebra_nhlfe_t *dplane_ctx_get_nhlfe(const struct zebra_dplane_ctx *ctx);
const struct nhlfe_list_head *dplane_ctx_get_nhlfe_list(
const struct zebra_dplane_ctx *ctx);
zebra_nhlfe_t *dplane_ctx_add_nhlfe(struct zebra_dplane_ctx *ctx,
enum lsp_types_t lsp_type,
enum nexthop_types_t nh_type,
union g_addr *gate,
ifindex_t ifindex,
uint8_t num_labels,
mpls_label_t out_labels[]);
mpls_label_t *out_labels);
const zebra_nhlfe_t *dplane_ctx_get_best_nhlfe(
const struct zebra_dplane_ctx *ctx);

189
zebra/zebra_mpls.c
View File

@ -99,7 +99,8 @@ static void lsp_free(struct hash *lsp_table, zebra_lsp_t **plsp);
static char *nhlfe2str(zebra_nhlfe_t *nhlfe, char *buf, int size);
static int nhlfe_nhop_match(zebra_nhlfe_t *nhlfe, enum nexthop_types_t gtype,
const union g_addr *gate, ifindex_t ifindex);
static zebra_nhlfe_t *nhlfe_find(zebra_lsp_t *lsp, enum lsp_types_t lsp_type,
static zebra_nhlfe_t *nhlfe_find(struct nhlfe_list_head *list,
enum lsp_types_t lsp_type,
enum nexthop_types_t gtype,
const union g_addr *gate, ifindex_t ifindex);
static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type,
@ -132,6 +133,8 @@ static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt);
static void mpls_ftn_uninstall_all(struct zebra_vrf *zvrf,
int afi, enum lsp_types_t lsp_type);
/* List implementations - declare internal linkage */
DECLARE_DLIST(snhlfe_list, struct zebra_snhlfe_t_, list);
/* Static functions */
@ -143,7 +146,7 @@ static void clear_nhlfe_installed(zebra_lsp_t *lsp)
zebra_nhlfe_t *nhlfe;
struct nexthop *nexthop;
for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) {
frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) {
nexthop = nhlfe->nexthop;
if (!nexthop)
continue;
@ -196,7 +199,8 @@ static int lsp_install(struct zebra_vrf *zvrf, mpls_label_t label,
if (CHECK_FLAG(nexthop->flags, NEXTHOP_FLAG_RECURSIVE))
continue;
nhlfe = nhlfe_find(lsp, lsp_type, nexthop->type, &nexthop->gate,
nhlfe = nhlfe_find(&lsp->nhlfe_list, lsp_type,
nexthop->type, &nexthop->gate,
nexthop->ifindex);
if (nhlfe) {
/* Clear deleted flag (in case it was set) */
@ -251,7 +255,7 @@ static int lsp_install(struct zebra_vrf *zvrf, mpls_label_t label,
if (added || changed) {
if (lsp_processq_add(lsp))
return -1;
} else if (!lsp->nhlfe_list
} else if ((nhlfe_list_first(&lsp->nhlfe_list) == NULL)
&& !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED))
lsp_free(lsp_table, &lsp);
@ -267,7 +271,7 @@ static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label)
struct hash *lsp_table;
zebra_ile_t tmp_ile;
zebra_lsp_t *lsp;
zebra_nhlfe_t *nhlfe, *nhlfe_next;
zebra_nhlfe_t *nhlfe;
char buf[BUFSIZ];
/* Lookup table. */
@ -278,12 +282,11 @@ static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label)
/* If entry is not present, exit. */
tmp_ile.in_label = label;
lsp = hash_lookup(lsp_table, &tmp_ile);
if (!lsp || !lsp->nhlfe_list)
if (!lsp || (nhlfe_list_first(&lsp->nhlfe_list) == NULL))
return 0;
/* Mark NHLFEs for delete or directly delete, as appropriate. */
for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe_next) {
nhlfe_next = nhlfe->next;
frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) {
/* Skip static NHLFEs */
if (nhlfe->type == ZEBRA_LSP_STATIC)
@ -308,7 +311,7 @@ static int lsp_uninstall(struct zebra_vrf *zvrf, mpls_label_t label)
if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED)) {
if (lsp_processq_add(lsp))
return -1;
} else if (!lsp->nhlfe_list
} else if ((nhlfe_list_first(&lsp->nhlfe_list) == NULL)
&& !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED))
lsp_free(lsp_table, &lsp);
@ -784,7 +787,7 @@ static void lsp_select_best_nhlfe(zebra_lsp_t *lsp)
* only
* concerned with non-deleted NHLFEs.
*/
for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) {
frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) {
/* Clear selection flags. */
UNSET_FLAG(nhlfe->flags,
(NHLFE_FLAG_SELECTED | NHLFE_FLAG_MULTIPATH));
@ -809,7 +812,7 @@ static void lsp_select_best_nhlfe(zebra_lsp_t *lsp)
* new (uninstalled) NHLFE has been selected, an installed entry that is
* still selected has a change or an installed entry is to be removed.
*/
for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) {
frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) {
int nh_chg, nh_sel, nh_inst;
nexthop = nhlfe->nexthop;
@ -967,8 +970,7 @@ static wq_item_status lsp_process(struct work_queue *wq, void *data)
* Any NHLFE that was installed but is not
* selected now needs to have its flags updated.
*/
for (nhlfe = lsp->nhlfe_list; nhlfe;
nhlfe = nhlfe->next) {
frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) {
nexthop = nhlfe->nexthop;
if (!nexthop)
continue;
@ -1012,7 +1014,7 @@ static void lsp_processq_del(struct work_queue *wq, void *data)
struct zebra_vrf *zvrf;
zebra_lsp_t *lsp;
struct hash *lsp_table;
zebra_nhlfe_t *nhlfe, *nhlfe_next;
zebra_nhlfe_t *nhlfe;
zvrf = vrf_info_lookup(VRF_DEFAULT);
assert(zvrf);
@ -1031,13 +1033,12 @@ static void lsp_processq_del(struct work_queue *wq, void *data)
*/
UNSET_FLAG(lsp->flags, LSP_FLAG_SCHEDULED);
for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe_next) {
nhlfe_next = nhlfe->next;
frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) {
if (CHECK_FLAG(nhlfe->flags, NHLFE_FLAG_DELETED))
nhlfe_del(nhlfe);
}
if (!lsp->nhlfe_list)
if (nhlfe_list_first(&lsp->nhlfe_list) == NULL)
lsp_free(lsp_table, &lsp);
}
@ -1080,6 +1081,7 @@ static void *lsp_alloc(void *p)
lsp = XCALLOC(MTYPE_LSP, sizeof(zebra_lsp_t));
lsp->ile = *ile;
nhlfe_list_init(&lsp->nhlfe_list);
if (IS_ZEBRA_DEBUG_MPLS)
zlog_debug("Alloc LSP in-label %u", lsp->ile.in_label);
@ -1094,7 +1096,7 @@ static void *lsp_alloc(void *p)
static void lsp_free(struct hash *lsp_table, zebra_lsp_t **plsp)
{
zebra_lsp_t *lsp;
zebra_nhlfe_t *nhlfe, *nhlfe_next;
zebra_nhlfe_t *nhlfe;
if (plsp == NULL || *plsp == NULL)
return;
@ -1106,11 +1108,8 @@ static void lsp_free(struct hash *lsp_table, zebra_lsp_t **plsp)
lsp->ile.in_label, lsp->flags);
/* Free nhlfes, if any. */
for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe_next) {
nhlfe_next = nhlfe->next;
frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe)
nhlfe_del(nhlfe);
}
hash_release(lsp_table, &lsp->ile);
XFREE(MTYPE_LSP, lsp);
@ -1190,16 +1189,14 @@ static int nhlfe_nhop_match(zebra_nhlfe_t *nhlfe, enum nexthop_types_t gtype,
/*
* Locate NHLFE that matches with passed info.
*/
static zebra_nhlfe_t *nhlfe_find(zebra_lsp_t *lsp, enum lsp_types_t lsp_type,
static zebra_nhlfe_t *nhlfe_find(struct nhlfe_list_head *list,
enum lsp_types_t lsp_type,
enum nexthop_types_t gtype,
const union g_addr *gate, ifindex_t ifindex)
{
zebra_nhlfe_t *nhlfe;
if (!lsp)
return NULL;
for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) {
frr_each_safe(nhlfe_list, list, nhlfe) {
if (nhlfe->type != lsp_type)
continue;
if (!nhlfe_nhop_match(nhlfe, gtype, gate, ifindex))
@ -1210,13 +1207,21 @@ static zebra_nhlfe_t *nhlfe_find(zebra_lsp_t *lsp, enum lsp_types_t lsp_type,
}
/*
* Add NHLFE. Base entry must have been created and duplicate
* check done.
* Enqueue nhlfe to lsp - at the head of the list
*/
static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type,
static void nhlfe_enqueue(zebra_lsp_t *lsp, zebra_nhlfe_t *nhlfe)
{
nhlfe_list_add_head(&lsp->nhlfe_list, nhlfe);
}
/*
* Allocate and init new NHLFE.
*/
static zebra_nhlfe_t *nhlfe_ctor(zebra_lsp_t *lsp, enum lsp_types_t lsp_type,
enum nexthop_types_t gtype,
const union g_addr *gate, ifindex_t ifindex,
uint8_t num_labels, mpls_label_t labels[])
const union g_addr *gate,
ifindex_t ifindex, uint8_t num_labels,
mpls_label_t *labels)
{
zebra_nhlfe_t *nhlfe;
struct nexthop *nexthop;
@ -1260,12 +1265,32 @@ static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type,
XFREE(MTYPE_NHLFE, nhlfe);
return NULL;
}
nhlfe->nexthop = nexthop;
if (lsp->nhlfe_list)
lsp->nhlfe_list->prev = nhlfe;
nhlfe->next = lsp->nhlfe_list;
lsp->nhlfe_list = nhlfe;
return nhlfe;
}
/*
* Add NHLFE. Base entry must have been created and duplicate
* check done.
*/
static zebra_nhlfe_t *nhlfe_add(zebra_lsp_t *lsp, enum lsp_types_t lsp_type,
enum nexthop_types_t gtype,
const union g_addr *gate, ifindex_t ifindex,
uint8_t num_labels, mpls_label_t *labels)
{
zebra_nhlfe_t *nhlfe;
if (!lsp)
return NULL;
/* Allocate new object */
nhlfe = nhlfe_ctor(lsp, lsp_type, gtype, gate, ifindex, num_labels,
labels);
/* Enqueue to LSP */
if (nhlfe)
nhlfe_enqueue(lsp, nhlfe);
return nhlfe;
}
@ -1288,17 +1313,12 @@ static int nhlfe_del(zebra_nhlfe_t *nhlfe)
if (nhlfe->nexthop)
nexthop_free(nhlfe->nexthop);
/* Unlink from LSP */
if (nhlfe->next)
nhlfe->next->prev = nhlfe->prev;
if (nhlfe->prev)
nhlfe->prev->next = nhlfe->next;
else
lsp->nhlfe_list = nhlfe->next;
if (nhlfe == lsp->best_nhlfe)
lsp->best_nhlfe = NULL;
/* Unlink from LSP */
nhlfe_list_del(&lsp->nhlfe_list, nhlfe);
XFREE(MTYPE_NHLFE, nhlfe);
return 0;
@ -1316,14 +1336,12 @@ static void nhlfe_out_label_update(zebra_nhlfe_t *nhlfe,
static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp,
enum lsp_types_t type)
{
zebra_nhlfe_t *nhlfe, *nhlfe_next;
zebra_nhlfe_t *nhlfe;
int schedule_lsp = 0;
char buf[BUFSIZ];
/* Mark NHLFEs for delete or directly delete, as appropriate. */
for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe_next) {
nhlfe_next = nhlfe->next;
frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) {
/* Skip non-static NHLFEs */
if (nhlfe->type != type)
continue;
@ -1348,7 +1366,7 @@ static int mpls_lsp_uninstall_all(struct hash *lsp_table, zebra_lsp_t *lsp,
if (schedule_lsp) {
if (lsp_processq_add(lsp))
return -1;
} else if (!lsp->nhlfe_list
} else if ((nhlfe_list_first(&lsp->nhlfe_list) == NULL)
&& !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED))
lsp_free(lsp_table, &lsp);
@ -1374,7 +1392,7 @@ static int mpls_static_lsp_uninstall_all(struct zebra_vrf *zvrf,
/* If entry is not present, exit. */
tmp_ile.in_label = in_label;
lsp = hash_lookup(lsp_table, &tmp_ile);
if (!lsp || !lsp->nhlfe_list)
if (!lsp || (nhlfe_list_first(&lsp->nhlfe_list) == NULL))
return 0;
return mpls_lsp_uninstall_all(lsp_table, lsp, ZEBRA_LSP_STATIC);
@ -1475,7 +1493,7 @@ static void lsp_print(zebra_lsp_t *lsp, void *ctxt)
CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED) ? " (installed)"
: "");
for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next)
frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe)
nhlfe_print(nhlfe, vty);
}
@ -1493,7 +1511,7 @@ static json_object *lsp_json(zebra_lsp_t *lsp)
if (CHECK_FLAG(lsp->flags, LSP_FLAG_INSTALLED))
json_object_boolean_true_add(json, "installed");
for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next)
frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe)
json_object_array_add(json_nhlfe_list, nhlfe_json(nhlfe));
json_object_object_add(json, "nexthops", json_nhlfe_list);
@ -1541,6 +1559,8 @@ static void *slsp_alloc(void *p)
slsp = XCALLOC(MTYPE_SLSP, sizeof(zebra_slsp_t));
slsp->ile = *ile;
snhlfe_list_init(&slsp->snhlfe_list);
return ((void *)slsp);
}
@ -1600,7 +1620,7 @@ static zebra_snhlfe_t *snhlfe_find(zebra_slsp_t *slsp,
if (!slsp)
return NULL;
for (snhlfe = slsp->snhlfe_list; snhlfe; snhlfe = snhlfe->next) {
frr_each_safe(snhlfe_list, &slsp->snhlfe_list, snhlfe) {
if (!snhlfe_match(snhlfe, gtype, gate, ifindex))
break;
}
@ -1642,10 +1662,7 @@ static zebra_snhlfe_t *snhlfe_add(zebra_slsp_t *slsp,
return NULL;
}
if (slsp->snhlfe_list)
slsp->snhlfe_list->prev = snhlfe;
snhlfe->next = slsp->snhlfe_list;
slsp->snhlfe_list = snhlfe;
snhlfe_list_add_head(&slsp->snhlfe_list, snhlfe);
return snhlfe;
}
@ -1664,14 +1681,8 @@ static int snhlfe_del(zebra_snhlfe_t *snhlfe)
if (!slsp)
return -1;
if (snhlfe->next)
snhlfe->next->prev = snhlfe->prev;
if (snhlfe->prev)
snhlfe->prev->next = snhlfe->next;
else
slsp->snhlfe_list = snhlfe->next;
snhlfe_list_del(&slsp->snhlfe_list, snhlfe);
snhlfe->prev = snhlfe->next = NULL;
XFREE(MTYPE_SNHLFE_IFNAME, snhlfe->ifname);
XFREE(MTYPE_SNHLFE, snhlfe);
@ -1683,13 +1694,12 @@ static int snhlfe_del(zebra_snhlfe_t *snhlfe)
*/
static int snhlfe_del_all(zebra_slsp_t *slsp)
{
zebra_snhlfe_t *snhlfe, *snhlfe_next;
zebra_snhlfe_t *snhlfe;
if (!slsp)
return -1;
for (snhlfe = slsp->snhlfe_list; snhlfe; snhlfe = snhlfe_next) {
snhlfe_next = snhlfe->next;
frr_each_safe(snhlfe_list, &slsp->snhlfe_list, snhlfe) {
snhlfe_del(snhlfe);
}
@ -1793,8 +1803,7 @@ void zebra_mpls_lsp_dplane_result(struct zebra_dplane_ctx *ctx)
if (status == ZEBRA_DPLANE_REQUEST_SUCCESS) {
/* Update zebra object */
SET_FLAG(lsp->flags, LSP_FLAG_INSTALLED);
for (nhlfe = lsp->nhlfe_list; nhlfe;
nhlfe = nhlfe->next) {
frr_each(nhlfe_list, &lsp->nhlfe_list, nhlfe) {
nexthop = nhlfe->nexthop;
if (!nexthop)
continue;
@ -1837,6 +1846,7 @@ void zebra_mpls_process_dplane_notify(struct zebra_dplane_ctx *ctx)
struct hash *lsp_table;
zebra_lsp_t *lsp;
zebra_nhlfe_t *nhlfe;
const struct nhlfe_list_head *head;
const zebra_nhlfe_t *ctx_nhlfe;
struct nexthop *nexthop;
const struct nexthop *ctx_nexthop;
@ -1872,7 +1882,8 @@ void zebra_mpls_process_dplane_notify(struct zebra_dplane_ctx *ctx)
* the existing state of the LSP objects available before making
* any changes.
*/
for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) {
head = dplane_ctx_get_nhlfe_list(ctx);
frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) {
char buf[NEXTHOP_STRLEN];
nexthop = nhlfe->nexthop;
@ -1883,9 +1894,7 @@ void zebra_mpls_process_dplane_notify(struct zebra_dplane_ctx *ctx)
start_count++;
ctx_nexthop = NULL;
for (ctx_nhlfe = dplane_ctx_get_nhlfe(ctx);
ctx_nhlfe; ctx_nhlfe = ctx_nhlfe->next) {
frr_each(nhlfe_list_const, head, ctx_nhlfe) {
ctx_nexthop = ctx_nhlfe->nexthop;
if (!ctx_nexthop)
continue;
@ -1960,7 +1969,7 @@ void zebra_mpls_process_dplane_notify(struct zebra_dplane_ctx *ctx)
* Now we take a second pass and bring the zebra
* nexthop state into sync with the forwarding-plane state.
*/
for (nhlfe = lsp->nhlfe_list; nhlfe; nhlfe = nhlfe->next) {
frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) {
char buf[NEXTHOP_STRLEN];
nexthop = nhlfe->nexthop;
@ -1968,9 +1977,7 @@ void zebra_mpls_process_dplane_notify(struct zebra_dplane_ctx *ctx)
continue;
ctx_nexthop = NULL;
for (ctx_nhlfe = dplane_ctx_get_nhlfe(ctx);
ctx_nhlfe; ctx_nhlfe = ctx_nhlfe->next) {
frr_each(nhlfe_list_const, head, ctx_nhlfe) {
ctx_nexthop = ctx_nhlfe->nexthop;
if (!ctx_nexthop)
continue;
@ -2765,7 +2772,7 @@ int mpls_lsp_install(struct zebra_vrf *zvrf, enum lsp_types_t type,
if (!lsp)
return -1;
nhlfe = nhlfe_find(lsp, type, gtype, gate, ifindex);
nhlfe = nhlfe_find(&lsp->nhlfe_list, type, gtype, gate, ifindex);
if (nhlfe) {
struct nexthop *nh = nhlfe->nexthop;
@ -2861,7 +2868,7 @@ int mpls_lsp_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type,
lsp = hash_lookup(lsp_table, &tmp_ile);
if (!lsp)
return 0;
nhlfe = nhlfe_find(lsp, type, gtype, gate, ifindex);
nhlfe = nhlfe_find(&lsp->nhlfe_list, type, gtype, gate, ifindex);
if (!nhlfe)
return 0;
@ -2881,7 +2888,7 @@ int mpls_lsp_uninstall(struct zebra_vrf *zvrf, enum lsp_types_t type,
nhlfe_del(nhlfe);
/* Free LSP entry if no other NHLFEs and not scheduled. */
if (!lsp->nhlfe_list
if ((nhlfe_list_first(&lsp->nhlfe_list) == NULL)
&& !CHECK_FLAG(lsp->flags, LSP_FLAG_SCHEDULED))
lsp_free(lsp_table, &lsp);
@ -2921,7 +2928,7 @@ static void mpls_lsp_uninstall_all_type(struct hash_bucket *bucket, void *ctxt)
struct hash *lsp_table;
lsp = (zebra_lsp_t *)bucket->data;
if (!lsp->nhlfe_list)
if (nhlfe_list_first(&lsp->nhlfe_list) == NULL)
return;
lsp_table = args->lsp_table;
@ -3014,15 +3021,17 @@ int zebra_mpls_lsp_label_consistent(struct zebra_vrf *zvrf,
return 1;
/* If not only NHLFE, cannot allow label change. */
if (snhlfe != slsp->snhlfe_list || snhlfe->next)
if (snhlfe != snhlfe_list_first(&slsp->snhlfe_list) ||
snhlfe_list_next(&slsp->snhlfe_list, snhlfe) != NULL)
return 0;
} else {
/* If other NHLFEs exist, label operation must match. */
if (slsp->snhlfe_list) {
snhlfe = snhlfe_list_first(&slsp->snhlfe_list);
if (snhlfe != NULL) {
int cur_op, new_op;
cur_op = (slsp->snhlfe_list->out_label
== MPLS_LABEL_IMPLICIT_NULL);
cur_op = (snhlfe->out_label ==
MPLS_LABEL_IMPLICIT_NULL);
new_op = (out_label == MPLS_LABEL_IMPLICIT_NULL);
if (cur_op != new_op)
return 0;
@ -3159,7 +3168,7 @@ int zebra_mpls_static_lsp_del(struct zebra_vrf *zvrf, mpls_label_t in_label,
/* Remove entire static LSP entry if no NHLFE - valid in either case
* above. */
if (!slsp->snhlfe_list) {
if (snhlfe_list_first(&slsp->snhlfe_list) == NULL) {
slsp = hash_release(slsp_table, &tmp_ile);
XFREE(MTYPE_SLSP, slsp);
}
@ -3247,8 +3256,7 @@ void zebra_mpls_print_lsp_table(struct vty *vty, struct zebra_vrf *zvrf,
ttable_rowseps(tt, 0, BOTTOM, true, '-');
for (ALL_LIST_ELEMENTS_RO(lsp_list, node, lsp)) {
for (nhlfe = lsp->nhlfe_list; nhlfe;
nhlfe = nhlfe->next) {
frr_each_safe(nhlfe_list, &lsp->nhlfe_list, nhlfe) {
struct nexthop *nexthop;
const char *out_label_str;
char nh_buf[NEXTHOP_STRLEN];
@ -3320,8 +3328,7 @@ int zebra_mpls_write_lsp_config(struct vty *vty, struct zebra_vrf *zvrf)
hash_get_sorted_list(zvrf->slsp_table, slsp_cmp);
for (ALL_LIST_ELEMENTS_RO(slsp_list, node, slsp)) {
for (snhlfe = slsp->snhlfe_list; snhlfe;
snhlfe = snhlfe->next) {
frr_each(snhlfe_list, &slsp->snhlfe_list, snhlfe) {
char buf[BUFSIZ];
char lstr[30];

24
zebra/zebra_mpls.h
View File

@ -55,6 +55,10 @@ typedef struct zebra_nhlfe_t_ zebra_nhlfe_t;
typedef struct zebra_lsp_t_ zebra_lsp_t;
typedef struct zebra_fec_t_ zebra_fec_t;
/* Declare LSP nexthop list types */
PREDECL_DLIST(snhlfe_list);
PREDECL_DLIST(nhlfe_list);
/*
* (Outgoing) nexthop label forwarding entry configuration
*/
@ -71,9 +75,8 @@ struct zebra_snhlfe_t_ {
/* Backpointer to base entry. */
zebra_slsp_t *slsp;
/* Pointers to more outgoing information for same in-label */
zebra_snhlfe_t *next;
zebra_snhlfe_t *prev;
/* Linkage for LSPs' lists */
struct snhlfe_list_item list;
};
/*
@ -97,9 +100,10 @@ struct zebra_nhlfe_t_ {
#define NHLFE_FLAG_DELETED (1 << 3)
#define NHLFE_FLAG_INSTALLED (1 << 4)
zebra_nhlfe_t *next;
zebra_nhlfe_t *prev;
uint8_t distance;
/* Linkage for LSPs' lists */
struct nhlfe_list_item list;
};
/*
@ -117,7 +121,7 @@ struct zebra_slsp_t_ {
zebra_ile_t ile;
/* List of outgoing nexthop static configuration */
zebra_snhlfe_t *snhlfe_list;
struct snhlfe_list_head snhlfe_list;
};
/*
@ -127,8 +131,9 @@ struct zebra_lsp_t_ {
/* Incoming label */
zebra_ile_t ile;
/* List of NHLFE, pointer to best and num equal-cost. */
zebra_nhlfe_t *nhlfe_list;
/* List of NHLFEs, pointer to best, and num equal-cost. */
struct nhlfe_list_head nhlfe_list;
zebra_nhlfe_t *best_nhlfe;
uint32_t num_ecmp;
@ -164,6 +169,9 @@ struct zebra_fec_t_ {
struct list *client_list;
};
/* Declare typesafe list apis/macros */
DECLARE_DLIST(nhlfe_list, struct zebra_nhlfe_t_, list);
/* Function declarations. */
/*

6
zebra/zebra_mpls_openbsd.c
View File

@ -239,8 +239,9 @@ static int kernel_send_rtmsg_v6(int action, mpls_label_t in_label,
static int kernel_lsp_cmd(struct zebra_dplane_ctx *ctx)
{
const struct nhlfe_list_head *head;
const zebra_nhlfe_t *nhlfe;
struct nexthop *nexthop = NULL;
const struct nexthop *nexthop = NULL;
unsigned int nexthop_num = 0;
int action;
@ -258,7 +259,8 @@ static int kernel_lsp_cmd(struct zebra_dplane_ctx *ctx)
return -1;
}
for (nhlfe = dplane_ctx_get_nhlfe(ctx); nhlfe; nhlfe = nhlfe->next) {
head = dplane_ctx_get_nhlfe_list(ctx);
frr_each(nhlfe_list_const, head, nhlfe) {
nexthop = nhlfe->nexthop;
if (!nexthop)
continue;