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Merge pull request #15993 from zhou-run/202405091114

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isisd: fix crash when deactivating ISIS adjacency on the interface.
This commit is contained in:
Russ White 2024-05-28 11:23:32 -04:00 committed by GitHub
commit 447e7be0e4
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1 changed files with 0 additions and 46 deletions
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46
isisd/isis_lsp.c
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@ -442,47 +442,6 @@ void set_overload_on_start_timer(struct event *thread)
isis_area_overload_bit_set(area, false);
}
static void isis_reset_attach_bit(struct isis_adjacency *adj)
{
struct isis_area *area = adj->circuit->area;
struct lspdb_head *head;
struct isis_lsp *lsp;
uint8_t lspid[ISIS_SYS_ID_LEN + 2];
/*
* If an L2 adjacency changed its state in L-1-2 area, we have to:
* - set the attached bit in L1 LSPs if it's the first L2 adjacency
* - remove the attached bit in L1 LSPs if it's the last L2 adjacency
*/
if (area->is_type != IS_LEVEL_1_AND_2 || adj->level == ISIS_ADJ_LEVEL1)
return;
if (!area->attached_bit_send)
return;
head = &area->lspdb[IS_LEVEL_1 - 1];
memset(lspid, 0, ISIS_SYS_ID_LEN + 2);
memcpy(lspid, area->isis->sysid, ISIS_SYS_ID_LEN);
lsp = lsp_search(head, lspid);
if (!lsp)
return;
if (adj->adj_state == ISIS_ADJ_UP
&& !(lsp->hdr.lsp_bits & LSPBIT_ATT)) {
sched_debug("ISIS (%s): adj going up regenerate lsp-bits",
area->area_tag);
lsp_regenerate_schedule(area, IS_LEVEL_1, 0);
} else if (adj->adj_state == ISIS_ADJ_DOWN
&& (lsp->hdr.lsp_bits & LSPBIT_ATT)
&& !isis_level2_adj_up(area)) {
sched_debug("ISIS (%s): adj going down regenerate lsp-bits",
area->area_tag);
lsp_regenerate_schedule(area, IS_LEVEL_1, 0);
}
}
static uint8_t lsp_bits_generate(int level, int overload_bit, int attached_bit,
struct isis_area *area)
{
@ -2354,11 +2313,6 @@ static int lsp_handle_adj_state_change(struct isis_adjacency *adj)
{
lsp_regenerate_schedule(adj->circuit->area, IS_LEVEL_1 | IS_LEVEL_2, 0);
/* when an adjacency state changes determine if we need to
* change attach_bits in other area's LSPs
*/
isis_reset_attach_bit(adj);
return 0;
}