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Merge pull request #18653 from louis-6wind/fix-bgp-pbr-mem-leaks

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bgpd: fix pbr memory leaks
This commit is contained in:
Donatas Abraitis 2025-04-15 10:07:14 +03:00 committed by GitHub
parent 3da1473093 eb8281aeb8
commit 7ef9394c33
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GPG key ID: B5690EEEBB952194
1 changed files with 58 additions and 34 deletions
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92
bgpd/bgp_pbr.c
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@ -279,6 +279,13 @@ static void bgp_pbr_policyroute_add_to_zebra_unit(struct bgp *bgp,
static void bgp_pbr_dump_entry(struct bgp_pbr_filter *bpf, bool add);
static void bgp_pbr_val_mask_free(void *arg)
{
struct bgp_pbr_val_mask *pbr_val_mask = arg;
XFREE(MTYPE_PBR_VALMASK, pbr_val_mask);
}
static bool bgp_pbr_extract_enumerate_unary_opposite(
uint8_t unary_operator,
struct bgp_pbr_val_mask *and_valmask,
@ -965,7 +972,12 @@ int bgp_pbr_build_and_validate_entry(const struct prefix *p,
return 0;
}
static void bgp_pbr_match_entry_free(void *arg)
static void bgp_pbr_match_entry_free(struct bgp_pbr_match_entry *bpme)
{
XFREE(MTYPE_PBR_MATCH_ENTRY, bpme);
}
static void bgp_pbr_match_entry_hash_free(void *arg)
{
struct bgp_pbr_match_entry *bpme;
@ -976,16 +988,21 @@ static void bgp_pbr_match_entry_free(void *arg)
bpme->installed = false;
bpme->backpointer = NULL;
}
XFREE(MTYPE_PBR_MATCH_ENTRY, bpme);
bgp_pbr_match_entry_free(bpme);
}
static void bgp_pbr_match_free(void *arg)
static void bgp_pbr_match_free(struct bgp_pbr_match *bpm)
{
XFREE(MTYPE_PBR_MATCH, bpm);
}
static void bgp_pbr_match_hash_free(void *arg)
{
struct bgp_pbr_match *bpm;
bpm = (struct bgp_pbr_match *)arg;
hash_clean(bpm->entry_hash, bgp_pbr_match_entry_free);
hash_clean(bpm->entry_hash, bgp_pbr_match_entry_hash_free);
if (hashcount(bpm->entry_hash) == 0) {
/* delete iptable entry first */
@ -1004,7 +1021,7 @@ static void bgp_pbr_match_free(void *arg)
}
hash_clean_and_free(&bpm->entry_hash, NULL);
XFREE(MTYPE_PBR_MATCH, bpm);
bgp_pbr_match_free(bpm);
}
static void *bgp_pbr_match_alloc_intern(void *arg)
@ -1019,7 +1036,12 @@ static void *bgp_pbr_match_alloc_intern(void *arg)
return new;
}
static void bgp_pbr_rule_free(void *arg)
static void bgp_pbr_rule_free(struct bgp_pbr_rule *pbr)
{
XFREE(MTYPE_PBR_RULE, pbr);
}
static void bgp_pbr_rule_hash_free(void *arg)
{
struct bgp_pbr_rule *bpr;
@ -1032,7 +1054,7 @@ static void bgp_pbr_rule_free(void *arg)
bpr->action->refcnt--;
bpr->action = NULL;
}
XFREE(MTYPE_PBR_RULE, bpr);
bgp_pbr_rule_free(bpr);
}
static void *bgp_pbr_rule_alloc_intern(void *arg)
@ -1372,8 +1394,8 @@ struct bgp_pbr_match *bgp_pbr_match_iptable_lookup(vrf_id_t vrf_id,
void bgp_pbr_cleanup(struct bgp *bgp)
{
hash_clean_and_free(&bgp->pbr_match_hash, bgp_pbr_match_free);
hash_clean_and_free(&bgp->pbr_rule_hash, bgp_pbr_rule_free);
hash_clean_and_free(&bgp->pbr_match_hash, bgp_pbr_match_hash_free);
hash_clean_and_free(&bgp->pbr_rule_hash, bgp_pbr_rule_hash_free);
hash_clean_and_free(&bgp->pbr_action_hash, bgp_pbr_action_free);
if (bgp->bgp_pbr_cfg == NULL)
@ -1656,6 +1678,8 @@ static void bgp_pbr_flush_iprule(struct bgp *bgp, struct bgp_pbr_action *bpa,
}
}
hash_release(bgp->pbr_rule_hash, bpr);
bgp_pbr_rule_free(bpr);
bgp_pbr_bpa_remove(bpa);
}
@ -1685,6 +1709,7 @@ static void bgp_pbr_flush_entry(struct bgp *bgp, struct bgp_pbr_action *bpa,
}
}
hash_release(bpm->entry_hash, bpme);
bgp_pbr_match_entry_free(bpme);
if (hashcount(bpm->entry_hash) == 0) {
/* delete iptable entry first */
/* then delete ipset match */
@ -1700,6 +1725,7 @@ static void bgp_pbr_flush_entry(struct bgp *bgp, struct bgp_pbr_action *bpa,
bpm->action = NULL;
}
hash_release(bgp->pbr_match_hash, bpm);
bgp_pbr_match_free(bpm);
/* XXX release pbr_match_action if not used
* note that drop does not need to call send_pbr_action
*/
@ -2111,17 +2137,6 @@ static void bgp_pbr_policyroute_remove_from_zebra(
bgp, path, bpf, bpof, FLOWSPEC_ICMP_TYPE);
else
bgp_pbr_policyroute_remove_from_zebra_unit(bgp, path, bpf);
/* flush bpof */
if (bpof->tcpflags)
list_delete_all_node(bpof->tcpflags);
if (bpof->dscp)
list_delete_all_node(bpof->dscp);
if (bpof->flowlabel)
list_delete_all_node(bpof->flowlabel);
if (bpof->pkt_len)
list_delete_all_node(bpof->pkt_len);
if (bpof->fragment)
list_delete_all_node(bpof->fragment);
}
static void bgp_pbr_dump_entry(struct bgp_pbr_filter *bpf, bool add)
@ -2606,19 +2621,6 @@ static void bgp_pbr_policyroute_add_to_zebra(struct bgp *bgp,
bgp, path, bpf, bpof, nh, rate, FLOWSPEC_ICMP_TYPE);
else
bgp_pbr_policyroute_add_to_zebra_unit(bgp, path, bpf, nh, rate);
/* flush bpof */
if (bpof->tcpflags)
list_delete_all_node(bpof->tcpflags);
if (bpof->dscp)
list_delete_all_node(bpof->dscp);
if (bpof->pkt_len)
list_delete_all_node(bpof->pkt_len);
if (bpof->fragment)
list_delete_all_node(bpof->fragment);
if (bpof->icmp_type)
list_delete_all_node(bpof->icmp_type);
if (bpof->icmp_code)
list_delete_all_node(bpof->icmp_code);
}
static void bgp_pbr_handle_entry(struct bgp *bgp, struct bgp_path_info *path,
@ -2684,6 +2686,7 @@ static void bgp_pbr_handle_entry(struct bgp *bgp, struct bgp_path_info *path,
srcp = ⦥
else {
bpof.icmp_type = list_new();
bpof.icmp_type->del = bgp_pbr_val_mask_free;
bgp_pbr_extract_enumerate(api->icmp_type,
api->match_icmp_type_num,
OPERATOR_UNARY_OR,
@ -2699,6 +2702,7 @@ static void bgp_pbr_handle_entry(struct bgp *bgp, struct bgp_path_info *path,
dstp = &range_icmp_code;
else {
bpof.icmp_code = list_new();
bpof.icmp_code->del = bgp_pbr_val_mask_free;
bgp_pbr_extract_enumerate(api->icmp_code,
api->match_icmp_code_num,
OPERATOR_UNARY_OR,
@ -2719,6 +2723,7 @@ static void bgp_pbr_handle_entry(struct bgp *bgp, struct bgp_path_info *path,
FLOWSPEC_TCP_FLAGS);
} else if (kind_enum == OPERATOR_UNARY_OR) {
bpof.tcpflags = list_new();
bpof.tcpflags->del = bgp_pbr_val_mask_free;
bgp_pbr_extract_enumerate(api->tcpflags,
api->match_tcpflags_num,
OPERATOR_UNARY_OR,
@ -2736,6 +2741,7 @@ static void bgp_pbr_handle_entry(struct bgp *bgp, struct bgp_path_info *path,
bpf.pkt_len = &pkt_len;
else {
bpof.pkt_len = list_new();
bpof.pkt_len->del = bgp_pbr_val_mask_free;
bgp_pbr_extract_enumerate(api->packet_length,
api->match_packet_length_num,
OPERATOR_UNARY_OR,
@ -2745,12 +2751,14 @@ static void bgp_pbr_handle_entry(struct bgp *bgp, struct bgp_path_info *path,
}
if (api->match_dscp_num >= 1) {
bpof.dscp = list_new();
bpof.dscp->del = bgp_pbr_val_mask_free;
bgp_pbr_extract_enumerate(api->dscp, api->match_dscp_num,
OPERATOR_UNARY_OR,
bpof.dscp, FLOWSPEC_DSCP);
}
if (api->match_fragment_num) {
bpof.fragment = list_new();
bpof.fragment->del = bgp_pbr_val_mask_free;
bgp_pbr_extract_enumerate(api->fragment,
api->match_fragment_num,
OPERATOR_UNARY_OR,
@ -2766,7 +2774,7 @@ static void bgp_pbr_handle_entry(struct bgp *bgp, struct bgp_path_info *path,
bpf.family = afi2family(api->afi);
if (!add) {
bgp_pbr_policyroute_remove_from_zebra(bgp, path, &bpf, &bpof);
return;
goto flush_bpof;
}
/* no action for add = true */
for (i = 0; i < api->action_num; i++) {
@ -2844,6 +2852,22 @@ static void bgp_pbr_handle_entry(struct bgp *bgp, struct bgp_path_info *path,
if (continue_loop == 0)
break;
}
flush_bpof:
if (bpof.tcpflags)
list_delete(&bpof.tcpflags);
if (bpof.dscp)
list_delete(&bpof.dscp);
if (bpof.flowlabel)
list_delete(&bpof.flowlabel);
if (bpof.pkt_len)
list_delete(&bpof.pkt_len);
if (bpof.fragment)
list_delete(&bpof.fragment);
if (bpof.icmp_type)
list_delete(&bpof.icmp_type);
if (bpof.icmp_code)
list_delete(&bpof.icmp_code);
}
void bgp_pbr_update_entry(struct bgp *bgp, const struct prefix *p,