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Merge pull request #12224 from cscarpitta/fix/enhance-srv6-locator-chunk-free-api

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bgpd: Enhance the `srv6_locator_chunk_free()` API by automatically setting the pointer to the freed memory to `NULL`
This commit is contained in:
Donald Sharp 2022-10-29 19:56:07 -04:00 committed by GitHub
commit b7128471c6
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GPG Key ID: 4AEE18F83AFDEB23
5 changed files with 27 additions and 38 deletions
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10
bgpd/bgp_mplsvpn.c
View File

@ -779,7 +779,7 @@ void ensure_vrf_tovpn_sid_per_af(struct bgp *bgp_vpn, struct bgp *bgp_vrf,
zlog_debug(
"%s: not allocated new sid for vrf %s: afi %s",
__func__, bgp_vrf->name_pretty, afi2str(afi));
srv6_locator_chunk_free(tovpn_sid_locator);
srv6_locator_chunk_free(&tovpn_sid_locator);
XFREE(MTYPE_BGP_SRV6_SID, tovpn_sid);
return;
}
@ -844,7 +844,7 @@ void ensure_vrf_tovpn_sid_per_vrf(struct bgp *bgp_vpn, struct bgp *bgp_vrf)
if (debug)
zlog_debug("%s: not allocated new sid for vrf %s",
__func__, bgp_vrf->name_pretty);
srv6_locator_chunk_free(tovpn_sid_locator);
srv6_locator_chunk_free(&tovpn_sid_locator);
XFREE(MTYPE_BGP_SRV6_SID, tovpn_sid);
return;
}
@ -891,8 +891,7 @@ void delete_vrf_tovpn_sid_per_af(struct bgp *bgp_vpn, struct bgp *bgp_vrf,
if (tovpn_sid_index != 0 || tovpn_sid_auto)
return;
srv6_locator_chunk_free(bgp_vrf->vpn_policy[afi].tovpn_sid_locator);
bgp_vrf->vpn_policy[afi].tovpn_sid_locator = NULL;
srv6_locator_chunk_free(&bgp_vrf->vpn_policy[afi].tovpn_sid_locator);
if (bgp_vrf->vpn_policy[afi].tovpn_sid) {
sid_unregister(bgp_vrf, bgp_vrf->vpn_policy[afi].tovpn_sid);
@ -919,8 +918,7 @@ void delete_vrf_tovpn_sid_per_vrf(struct bgp *bgp_vpn, struct bgp *bgp_vrf)
if (tovpn_sid_index != 0 || tovpn_sid_auto)
return;
srv6_locator_chunk_free(bgp_vrf->tovpn_sid_locator);
bgp_vrf->tovpn_sid_locator = NULL;
srv6_locator_chunk_free(&bgp_vrf->tovpn_sid_locator);
if (bgp_vrf->tovpn_sid) {
sid_unregister(bgp_vrf, bgp_vrf->tovpn_sid);

22
bgpd/bgp_vty.c
View File

@ -297,7 +297,7 @@ static int bgp_srv6_locator_unset(struct bgp *bgp)
{
int ret;
struct listnode *node, *nnode;
struct srv6_locator_chunk *chunk, *tovpn_sid_locator;
struct srv6_locator_chunk *chunk;
struct bgp_srv6_function *func;
struct bgp *bgp_vrf;
@ -310,7 +310,7 @@ static int bgp_srv6_locator_unset(struct bgp *bgp)
/* refresh chunks */
for (ALL_LIST_ELEMENTS(bgp->srv6_locator_chunks, node, nnode, chunk)) {
listnode_delete(bgp->srv6_locator_chunks, chunk);
srv6_locator_chunk_free(chunk);
srv6_locator_chunk_free(&chunk);
}
/* refresh functions */
@ -345,23 +345,15 @@ static int bgp_srv6_locator_unset(struct bgp *bgp)
continue;
/* refresh vpnv4 tovpn_sid_locator */
tovpn_sid_locator =
bgp_vrf->vpn_policy[AFI_IP].tovpn_sid_locator;
if (tovpn_sid_locator) {
srv6_locator_chunk_free(tovpn_sid_locator);
bgp_vrf->vpn_policy[AFI_IP].tovpn_sid_locator = NULL;
}
srv6_locator_chunk_free(
&bgp_vrf->vpn_policy[AFI_IP].tovpn_sid_locator);
/* refresh vpnv6 tovpn_sid_locator */
tovpn_sid_locator =
bgp_vrf->vpn_policy[AFI_IP6].tovpn_sid_locator;
if (tovpn_sid_locator) {
srv6_locator_chunk_free(tovpn_sid_locator);
bgp_vrf->vpn_policy[AFI_IP6].tovpn_sid_locator = NULL;
}
srv6_locator_chunk_free(
&bgp_vrf->vpn_policy[AFI_IP6].tovpn_sid_locator);
/* refresh per-vrf tovpn_sid_locator */
srv6_locator_chunk_free(bgp_vrf->tovpn_sid_locator);
srv6_locator_chunk_free(&bgp_vrf->tovpn_sid_locator);
}
/* clear locator name */

27
bgpd/bgp_zebra.c
View File

@ -3219,13 +3219,13 @@ static int bgp_zebra_process_srv6_locator_chunk(ZAPI_CALLBACK_ARGS)
if (strcmp(bgp->srv6_locator_name, chunk->locator_name) != 0) {
zlog_err("%s: Locator name unmatch %s:%s", __func__,
bgp->srv6_locator_name, chunk->locator_name);
srv6_locator_chunk_free(chunk);
srv6_locator_chunk_free(&chunk);
return 0;
}
for (ALL_LIST_ELEMENTS_RO(bgp->srv6_locator_chunks, node, c)) {
if (!prefix_cmp(&c->prefix, &chunk->prefix)) {
srv6_locator_chunk_free(chunk);
srv6_locator_chunk_free(&chunk);
return 0;
}
}
@ -3272,7 +3272,7 @@ static int bgp_zebra_process_srv6_locator_delete(ZAPI_CALLBACK_ARGS)
if (prefix_match((struct prefix *)&loc.prefix,
(struct prefix *)&chunk->prefix)) {
listnode_delete(bgp->srv6_locator_chunks, chunk);
srv6_locator_chunk_free(chunk);
srv6_locator_chunk_free(&chunk);
}
// refresh functions
@ -3343,11 +3343,10 @@ static int bgp_zebra_process_srv6_locator_delete(ZAPI_CALLBACK_ARGS)
tmp_prefi.prefixlen = IPV6_MAX_BITLEN;
tmp_prefi.prefix = tovpn_sid_locator->prefix.prefix;
if (prefix_match((struct prefix *)&loc.prefix,
(struct prefix *)&tmp_prefi)) {
srv6_locator_chunk_free(tovpn_sid_locator);
bgp_vrf->vpn_policy[AFI_IP].tovpn_sid_locator =
NULL;
}
(struct prefix *)&tmp_prefi))
srv6_locator_chunk_free(
&bgp_vrf->vpn_policy[AFI_IP]
.tovpn_sid_locator);
}
/* refresh vpnv6 tovpn_sid_locator */
@ -3358,11 +3357,10 @@ static int bgp_zebra_process_srv6_locator_delete(ZAPI_CALLBACK_ARGS)
tmp_prefi.prefixlen = IPV6_MAX_BITLEN;
tmp_prefi.prefix = tovpn_sid_locator->prefix.prefix;
if (prefix_match((struct prefix *)&loc.prefix,
(struct prefix *)&tmp_prefi)) {
srv6_locator_chunk_free(tovpn_sid_locator);
bgp_vrf->vpn_policy[AFI_IP6].tovpn_sid_locator =
NULL;
}
(struct prefix *)&tmp_prefi))
srv6_locator_chunk_free(
&bgp_vrf->vpn_policy[AFI_IP6]
.tovpn_sid_locator);
}
/* refresh per-vrf tovpn_sid_locator */
@ -3373,7 +3371,8 @@ static int bgp_zebra_process_srv6_locator_delete(ZAPI_CALLBACK_ARGS)
tmp_prefi.prefix = tovpn_sid_locator->prefix.prefix;
if (prefix_match((struct prefix *)&loc.prefix,
(struct prefix *)&tmp_prefi))
srv6_locator_chunk_free(tovpn_sid_locator);
srv6_locator_chunk_free(
&bgp_vrf->tovpn_sid_locator);
}
}

4
lib/srv6.c
View File

@ -157,9 +157,9 @@ void srv6_locator_free(struct srv6_locator *locator)
}
}
void srv6_locator_chunk_free(struct srv6_locator_chunk *chunk)
void srv6_locator_chunk_free(struct srv6_locator_chunk **chunk)
{
XFREE(MTYPE_SRV6_LOCATOR_CHUNK, chunk);
XFREE(MTYPE_SRV6_LOCATOR_CHUNK, *chunk);
}
json_object *srv6_locator_chunk_json(const struct srv6_locator_chunk *chunk)

2
lib/srv6.h
View File

@ -187,7 +187,7 @@ int snprintf_seg6_segs(char *str,
extern struct srv6_locator *srv6_locator_alloc(const char *name);
extern struct srv6_locator_chunk *srv6_locator_chunk_alloc(void);
extern void srv6_locator_free(struct srv6_locator *locator);
extern void srv6_locator_chunk_free(struct srv6_locator_chunk *chunk);
extern void srv6_locator_chunk_free(struct srv6_locator_chunk **chunk);
json_object *srv6_locator_chunk_json(const struct srv6_locator_chunk *chunk);
json_object *srv6_locator_json(const struct srv6_locator *loc);
json_object *srv6_locator_detailed_json(const struct srv6_locator *loc);