ryndia [Thu, 12 Oct 2023 22:04:30 +0000 (02:04 +0400)]
bgpd: Ecommunity_dup memory leak fix
The shallow copy of attr wasn't freed when there was no valid label for the momentand the function return therefore creating leaks. The leak below are solved by flushing the shallow copy of attr.
Direct leak of 280 byte(s) in 7 object(s) allocated from:
#0 0x7f62cd0c9d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
#1 0x7f62ccac21c3 in qcalloc lib/memory.c:105
#2 0x5623b8810dc8 in ecommunity_dup bgpd/bgp_ecommunity.c:252
#3 0x5623b88be8eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x5623b88c13b3 in vpn_leak_from_vrf_update_all bgpd/bgp_mplsvpn.c:2005
#5 0x5623b89beabc in vpn_leak_postchange bgpd/bgp_mplsvpn.h:287
#6 0x5623b89beabc in af_label_vpn_export_allocation_mode_magic bgpd/bgp_vty.c:9464
#7 0x5623b89beabc in af_label_vpn_export_allocation_mode bgpd/bgp_vty_clippy.c:2809
#8 0x7f62cca45511 in cmd_execute_command_real lib/command.c:978
#9 0x7f62cca459d5 in cmd_execute_command lib/command.c:1036
#10 0x7f62cca45e54 in cmd_execute lib/command.c:1203
#11 0x7f62ccb6ee20 in vty_command lib/vty.c:591
#12 0x7f62ccb6f2cb in vty_execute lib/vty.c:1354
#13 0x7f62ccb77b95 in vtysh_read lib/vty.c:2362
#14 0x7f62ccb62b8f in event_call lib/event.c:1969
#15 0x7f62ccaa5462 in frr_run lib/libfrr.c:1213
#16 0x5623b87e054b in main bgpd/bgp_main.c:510
#17 0x7f62cbae7c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Direct leak of 280 byte(s) in 7 object(s) allocated from:
#0 0x7f62cd0c9d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
#1 0x7f62ccac21c3 in qcalloc lib/memory.c:105
#2 0x5623b8810dc8 in ecommunity_dup bgpd/bgp_ecommunity.c:252
#3 0x5623b88be8eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x5623b892e86d in bgp_update bgpd/bgp_route.c:4969
#5 0x5623b893134d in bgp_nlri_parse_ip bgpd/bgp_route.c:6213
#6 0x5623b88e2a0e in bgp_nlri_parse bgpd/bgp_packet.c:341
#7 0x5623b88e4f7c in bgp_update_receive bgpd/bgp_packet.c:2220
#8 0x5623b88f0474 in bgp_process_packet bgpd/bgp_packet.c:3386
#9 0x7f62ccb62b8f in event_call lib/event.c:1969
#10 0x7f62ccaa5462 in frr_run lib/libfrr.c:1213
#11 0x5623b87e054b in main bgpd/bgp_main.c:510
#12 0x7f62cbae7c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Direct leak of 280 byte(s) in 7 object(s) allocated from:
#0 0x7f62cd0c9d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
#1 0x7f62ccac21c3 in qcalloc lib/memory.c:105
#2 0x5623b8810dc8 in ecommunity_dup bgpd/bgp_ecommunity.c:252
#3 0x5623b88be8eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x5623b88c13b3 in vpn_leak_from_vrf_update_all bgpd/bgp_mplsvpn.c:2005
#5 0x5623b89bdebb in vpn_leak_postchange bgpd/bgp_mplsvpn.h:287
#6 0x5623b89bdebb in af_label_vpn_export_magic bgpd/bgp_vty.c:9547
#7 0x5623b89bdebb in af_label_vpn_export bgpd/bgp_vty_clippy.c:2868
#8 0x7f62cca45511 in cmd_execute_command_real lib/command.c:978
#9 0x7f62cca459d5 in cmd_execute_command lib/command.c:1036
#10 0x7f62cca45e54 in cmd_execute lib/command.c:1203
#11 0x7f62ccb6ee20 in vty_command lib/vty.c:591
#12 0x7f62ccb6f2cb in vty_execute lib/vty.c:1354
#13 0x7f62ccb77b95 in vtysh_read lib/vty.c:2362
#14 0x7f62ccb62b8f in event_call lib/event.c:1969
#15 0x7f62ccaa5462 in frr_run lib/libfrr.c:1213
#16 0x5623b87e054b in main bgpd/bgp_main.c:510
#17 0x7f62cbae7c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Direct leak of 240 byte(s) in 6 object(s) allocated from:
#0 0x7f62cd0c9d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
#1 0x7f62ccac21c3 in qcalloc lib/memory.c:105
#2 0x5623b8810dc8 in ecommunity_dup bgpd/bgp_ecommunity.c:252
#3 0x5623b88be8eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x5623b88dc289 in evaluate_paths bgpd/bgp_nht.c:1384
#5 0x5623b88ddb0b in bgp_process_nexthop_update bgpd/bgp_nht.c:733
#6 0x5623b88de027 in bgp_parse_nexthop_update bgpd/bgp_nht.c:934
#7 0x5623b8a03163 in bgp_read_nexthop_update bgpd/bgp_zebra.c:104
#8 0x7f62ccb92d8a in zclient_read lib/zclient.c:4425
#9 0x7f62ccb62b8f in event_call lib/event.c:1969
#10 0x7f62ccaa5462 in frr_run lib/libfrr.c:1213
#11 0x5623b87e054b in main bgpd/bgp_main.c:510
#12 0x7f62cbae7c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Direct leak of 120 byte(s) in 3 object(s) allocated from:
#0 0x7f62cd0c9d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
#1 0x7f62ccac21c3 in qcalloc lib/memory.c:105
#2 0x5623b8810dc8 in ecommunity_dup bgpd/bgp_ecommunity.c:252
#3 0x5623b88be8eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x5623b893a406 in bgp_redistribute_add bgpd/bgp_route.c:8692
#5 0x5623b8a02b3b in zebra_read_route bgpd/bgp_zebra.c:595
#6 0x7f62ccb92d8a in zclient_read lib/zclient.c:4425
#7 0x7f62ccb62b8f in event_call lib/event.c:1969
#8 0x7f62ccaa5462 in frr_run lib/libfrr.c:1213
#9 0x5623b87e054b in main bgpd/bgp_main.c:510
#10 0x7f62cbae7c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Direct leak of 80 byte(s) in 2 object(s) allocated from:
#0 0x7f62cd0c9d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
#1 0x7f62ccac21c3 in qcalloc lib/memory.c:105
#2 0x5623b8810dc8 in ecommunity_dup bgpd/bgp_ecommunity.c:252
#3 0x5623b88be8eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x5623b88dc188 in evaluate_paths bgpd/bgp_nht.c:1348
#5 0x5623b88ddb0b in bgp_process_nexthop_update bgpd/bgp_nht.c:733
#6 0x5623b88de027 in bgp_parse_nexthop_update bgpd/bgp_nht.c:934
#7 0x5623b8a03163 in bgp_read_nexthop_update bgpd/bgp_zebra.c:104
#8 0x7f62ccb92d8a in zclient_read lib/zclient.c:4425
#9 0x7f62ccb62b8f in event_call lib/event.c:1969
#10 0x7f62ccaa5462 in frr_run lib/libfrr.c:1213
#11 0x5623b87e054b in main bgpd/bgp_main.c:510
#12 0x7f62cbae7c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Indirect leak of 56 byte(s) in 7 object(s) allocated from:
#0 0x7f62cd0c9b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
#1 0x7f62ccac1ee3 in qmalloc lib/memory.c:100
#2 0x5623b8810eb8 in ecommunity_dup bgpd/bgp_ecommunity.c:256
#3 0x5623b88be8eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x5623b88c13b3 in vpn_leak_from_vrf_update_all bgpd/bgp_mplsvpn.c:2005
#5 0x5623b89beabc in vpn_leak_postchange bgpd/bgp_mplsvpn.h:287
#6 0x5623b89beabc in af_label_vpn_export_allocation_mode_magic bgpd/bgp_vty.c:9464
#7 0x5623b89beabc in af_label_vpn_export_allocation_mode bgpd/bgp_vty_clippy.c:2809
#8 0x7f62cca45511 in cmd_execute_command_real lib/command.c:978
#9 0x7f62cca459d5 in cmd_execute_command lib/command.c:1036
#10 0x7f62cca45e54 in cmd_execute lib/command.c:1203
#11 0x7f62ccb6ee20 in vty_command lib/vty.c:591
#12 0x7f62ccb6f2cb in vty_execute lib/vty.c:1354
#13 0x7f62ccb77b95 in vtysh_read lib/vty.c:2362
#14 0x7f62ccb62b8f in event_call lib/event.c:1969
#15 0x7f62ccaa5462 in frr_run lib/libfrr.c:1213
#16 0x5623b87e054b in main bgpd/bgp_main.c:510
#17 0x7f62cbae7c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Indirect leak of 56 byte(s) in 7 object(s) allocated from:
#0 0x7f62cd0c9b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
#1 0x7f62ccac1ee3 in qmalloc lib/memory.c:100
#2 0x5623b8810eb8 in ecommunity_dup bgpd/bgp_ecommunity.c:256
#3 0x5623b88be8eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x5623b892e86d in bgp_update bgpd/bgp_route.c:4969
#5 0x5623b893134d in bgp_nlri_parse_ip bgpd/bgp_route.c:6213
#6 0x5623b88e2a0e in bgp_nlri_parse bgpd/bgp_packet.c:341
#7 0x5623b88e4f7c in bgp_update_receive bgpd/bgp_packet.c:2220
#8 0x5623b88f0474 in bgp_process_packet bgpd/bgp_packet.c:3386
#9 0x7f62ccb62b8f in event_call lib/event.c:1969
#10 0x7f62ccaa5462 in frr_run lib/libfrr.c:1213
#11 0x5623b87e054b in main bgpd/bgp_main.c:510
#12 0x7f62cbae7c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Indirect leak of 56 byte(s) in 7 object(s) allocated from:
#0 0x7f62cd0c9b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
#1 0x7f62ccac1ee3 in qmalloc lib/memory.c:100
#2 0x5623b8810eb8 in ecommunity_dup bgpd/bgp_ecommunity.c:256
#3 0x5623b88be8eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x5623b88c13b3 in vpn_leak_from_vrf_update_all bgpd/bgp_mplsvpn.c:2005
#5 0x5623b89bdebb in vpn_leak_postchange bgpd/bgp_mplsvpn.h:287
#6 0x5623b89bdebb in af_label_vpn_export_magic bgpd/bgp_vty.c:9547
#7 0x5623b89bdebb in af_label_vpn_export bgpd/bgp_vty_clippy.c:2868
#8 0x7f62cca45511 in cmd_execute_command_real lib/command.c:978
#9 0x7f62cca459d5 in cmd_execute_command lib/command.c:1036
#10 0x7f62cca45e54 in cmd_execute lib/command.c:1203
#11 0x7f62ccb6ee20 in vty_command lib/vty.c:591
#12 0x7f62ccb6f2cb in vty_execute lib/vty.c:1354
#13 0x7f62ccb77b95 in vtysh_read lib/vty.c:2362
#14 0x7f62ccb62b8f in event_call lib/event.c:1969
#15 0x7f62ccaa5462 in frr_run lib/libfrr.c:1213
#16 0x5623b87e054b in main bgpd/bgp_main.c:510
#17 0x7f62cbae7c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Indirect leak of 48 byte(s) in 6 object(s) allocated from:
#0 0x7f62cd0c9b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
#1 0x7f62ccac1ee3 in qmalloc lib/memory.c:100
#2 0x5623b8810eb8 in ecommunity_dup bgpd/bgp_ecommunity.c:256
#3 0x5623b88be8eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x5623b88dc289 in evaluate_paths bgpd/bgp_nht.c:1384
#5 0x5623b88ddb0b in bgp_process_nexthop_update bgpd/bgp_nht.c:733
#6 0x5623b88de027 in bgp_parse_nexthop_update bgpd/bgp_nht.c:934
#7 0x5623b8a03163 in bgp_read_nexthop_update bgpd/bgp_zebra.c:104
#8 0x7f62ccb92d8a in zclient_read lib/zclient.c:4425
#9 0x7f62ccb62b8f in event_call lib/event.c:1969
#10 0x7f62ccaa5462 in frr_run lib/libfrr.c:1213
#11 0x5623b87e054b in main bgpd/bgp_main.c:510
#12 0x7f62cbae7c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Indirect leak of 24 byte(s) in 3 object(s) allocated from:
#0 0x7f62cd0c9b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
#1 0x7f62ccac1ee3 in qmalloc lib/memory.c:100
#2 0x5623b8810eb8 in ecommunity_dup bgpd/bgp_ecommunity.c:256
#3 0x5623b88be8eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x5623b893a406 in bgp_redistribute_add bgpd/bgp_route.c:8692
#5 0x5623b8a02b3b in zebra_read_route bgpd/bgp_zebra.c:595
#6 0x7f62ccb92d8a in zclient_read lib/zclient.c:4425
#7 0x7f62ccb62b8f in event_call lib/event.c:1969
#8 0x7f62ccaa5462 in frr_run lib/libfrr.c:1213
#9 0x5623b87e054b in main bgpd/bgp_main.c:510
#10 0x7f62cbae7c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Indirect leak of 16 byte(s) in 2 object(s) allocated from:
#0 0x7f62cd0c9b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
#1 0x7f62ccac1ee3 in qmalloc lib/memory.c:100
#2 0x5623b8810eb8 in ecommunity_dup bgpd/bgp_ecommunity.c:256
#3 0x5623b88be8eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x5623b88dc188 in evaluate_paths bgpd/bgp_nht.c:1348
#5 0x5623b88ddb0b in bgp_process_nexthop_update bgpd/bgp_nht.c:733
#6 0x5623b88de027 in bgp_parse_nexthop_update bgpd/bgp_nht.c:934
#7 0x5623b8a03163 in bgp_read_nexthop_update bgpd/bgp_zebra.c:104
#8 0x7f62ccb92d8a in zclient_read lib/zclient.c:4425
#9 0x7f62ccb62b8f in event_call lib/event.c:1969
#10 0x7f62ccaa5462 in frr_run lib/libfrr.c:1213
#11 0x5623b87e054b in main bgpd/bgp_main.c:510
#12 0x7f62cbae7c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
SUMMARY: AddressSanitizer: 1536 byte(s) leaked in 64 allocation(s).
***********************************************************************************
Address Sanitizer Error detected in bgp_vpnv4_per_nexthop_label.test_bgp_vpnv4_per_nexthop_label/r1.asan.bgpd.10610
Direct leak of 280 byte(s) in 7 object(s) allocated from:
#0 0x7f81fc562d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
#1 0x7f81fbf5b1c3 in qcalloc lib/memory.c:105
#2 0x55cdc9b28dc8 in ecommunity_dup bgpd/bgp_ecommunity.c:252
#3 0x55cdc9bd68eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x55cdc9c4686d in bgp_update bgpd/bgp_route.c:4969
#5 0x55cdc9c4934d in bgp_nlri_parse_ip bgpd/bgp_route.c:6213
#6 0x55cdc9bfaa0e in bgp_nlri_parse bgpd/bgp_packet.c:341
#7 0x55cdc9bfcf7c in bgp_update_receive bgpd/bgp_packet.c:2220
#8 0x55cdc9c08474 in bgp_process_packet bgpd/bgp_packet.c:3386
#9 0x7f81fbffbb8f in event_call lib/event.c:1969
#10 0x7f81fbf3e462 in frr_run lib/libfrr.c:1213
#11 0x55cdc9af854b in main bgpd/bgp_main.c:510
#12 0x7f81faf80c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Direct leak of 280 byte(s) in 7 object(s) allocated from:
#0 0x7f81fc562d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
#1 0x7f81fbf5b1c3 in qcalloc lib/memory.c:105
#2 0x55cdc9b28dc8 in ecommunity_dup bgpd/bgp_ecommunity.c:252
#3 0x55cdc9bd68eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x55cdc9bd93b3 in vpn_leak_from_vrf_update_all bgpd/bgp_mplsvpn.c:2005
#5 0x55cdc9cd6abc in vpn_leak_postchange bgpd/bgp_mplsvpn.h:287
#6 0x55cdc9cd6abc in af_label_vpn_export_allocation_mode_magic bgpd/bgp_vty.c:9464
#7 0x55cdc9cd6abc in af_label_vpn_export_allocation_mode bgpd/bgp_vty_clippy.c:2809
#8 0x7f81fbede511 in cmd_execute_command_real lib/command.c:978
#9 0x7f81fbede9d5 in cmd_execute_command lib/command.c:1036
#10 0x7f81fbedee54 in cmd_execute lib/command.c:1203
#11 0x7f81fc007e20 in vty_command lib/vty.c:591
#12 0x7f81fc0082cb in vty_execute lib/vty.c:1354
#13 0x7f81fc010b95 in vtysh_read lib/vty.c:2362
#14 0x7f81fbffbb8f in event_call lib/event.c:1969
#15 0x7f81fbf3e462 in frr_run lib/libfrr.c:1213
#16 0x55cdc9af854b in main bgpd/bgp_main.c:510
#17 0x7f81faf80c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Direct leak of 280 byte(s) in 7 object(s) allocated from:
#0 0x7f81fc562d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
#1 0x7f81fbf5b1c3 in qcalloc lib/memory.c:105
#2 0x55cdc9b28dc8 in ecommunity_dup bgpd/bgp_ecommunity.c:252
#3 0x55cdc9bd68eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x55cdc9bd93b3 in vpn_leak_from_vrf_update_all bgpd/bgp_mplsvpn.c:2005
#5 0x55cdc9cd5ebb in vpn_leak_postchange bgpd/bgp_mplsvpn.h:287
#6 0x55cdc9cd5ebb in af_label_vpn_export_magic bgpd/bgp_vty.c:9547
#7 0x55cdc9cd5ebb in af_label_vpn_export bgpd/bgp_vty_clippy.c:2868
#8 0x7f81fbede511 in cmd_execute_command_real lib/command.c:978
#9 0x7f81fbede9d5 in cmd_execute_command lib/command.c:1036
#10 0x7f81fbedee54 in cmd_execute lib/command.c:1203
#11 0x7f81fc007e20 in vty_command lib/vty.c:591
#12 0x7f81fc0082cb in vty_execute lib/vty.c:1354
#13 0x7f81fc010b95 in vtysh_read lib/vty.c:2362
#14 0x7f81fbffbb8f in event_call lib/event.c:1969
#15 0x7f81fbf3e462 in frr_run lib/libfrr.c:1213
#16 0x55cdc9af854b in main bgpd/bgp_main.c:510
#17 0x7f81faf80c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Direct leak of 240 byte(s) in 6 object(s) allocated from:
#0 0x7f81fc562d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
#1 0x7f81fbf5b1c3 in qcalloc lib/memory.c:105
#2 0x55cdc9b28dc8 in ecommunity_dup bgpd/bgp_ecommunity.c:252
#3 0x55cdc9bd68eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x55cdc9bf4289 in evaluate_paths bgpd/bgp_nht.c:1384
#5 0x55cdc9bf5b0b in bgp_process_nexthop_update bgpd/bgp_nht.c:733
#6 0x55cdc9bf6027 in bgp_parse_nexthop_update bgpd/bgp_nht.c:934
#7 0x55cdc9d1b163 in bgp_read_nexthop_update bgpd/bgp_zebra.c:104
#8 0x7f81fc02bd8a in zclient_read lib/zclient.c:4425
#9 0x7f81fbffbb8f in event_call lib/event.c:1969
#10 0x7f81fbf3e462 in frr_run lib/libfrr.c:1213
#11 0x55cdc9af854b in main bgpd/bgp_main.c:510
#12 0x7f81faf80c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Direct leak of 80 byte(s) in 2 object(s) allocated from:
#0 0x7f81fc562d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
#1 0x7f81fbf5b1c3 in qcalloc lib/memory.c:105
#2 0x55cdc9b28dc8 in ecommunity_dup bgpd/bgp_ecommunity.c:252
#3 0x55cdc9bd68eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x55cdc9bf4188 in evaluate_paths bgpd/bgp_nht.c:1348
#5 0x55cdc9bf5b0b in bgp_process_nexthop_update bgpd/bgp_nht.c:733
#6 0x55cdc9bf6027 in bgp_parse_nexthop_update bgpd/bgp_nht.c:934
#7 0x55cdc9d1b163 in bgp_read_nexthop_update bgpd/bgp_zebra.c:104
#8 0x7f81fc02bd8a in zclient_read lib/zclient.c:4425
#9 0x7f81fbffbb8f in event_call lib/event.c:1969
#10 0x7f81fbf3e462 in frr_run lib/libfrr.c:1213
#11 0x55cdc9af854b in main bgpd/bgp_main.c:510
#12 0x7f81faf80c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Direct leak of 80 byte(s) in 2 object(s) allocated from:
#0 0x7f81fc562d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
#1 0x7f81fbf5b1c3 in qcalloc lib/memory.c:105
#2 0x55cdc9b28dc8 in ecommunity_dup bgpd/bgp_ecommunity.c:252
#3 0x55cdc9bd68eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x55cdc9bd93b3 in vpn_leak_from_vrf_update_all bgpd/bgp_mplsvpn.c:2005
#5 0x55cdc9bdafd5 in vpn_leak_postchange bgpd/bgp_mplsvpn.h:287
#6 0x55cdc9bdafd5 in vpn_leak_label_callback bgpd/bgp_mplsvpn.c:581
#7 0x55cdc9bb2606 in lp_cbq_docallback bgpd/bgp_labelpool.c:118
#8 0x7f81fc0164b5 in work_queue_run lib/workqueue.c:266
#9 0x7f81fbffbb8f in event_call lib/event.c:1969
#10 0x7f81fbf3e462 in frr_run lib/libfrr.c:1213
#11 0x55cdc9af854b in main bgpd/bgp_main.c:510
#12 0x7f81faf80c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Direct leak of 40 byte(s) in 1 object(s) allocated from:
#0 0x7f81fc562d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
#1 0x7f81fbf5b1c3 in qcalloc lib/memory.c:105
#2 0x55cdc9b28dc8 in ecommunity_dup bgpd/bgp_ecommunity.c:252
#3 0x55cdc9bd68eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x55cdc9c52406 in bgp_redistribute_add bgpd/bgp_route.c:8692
#5 0x55cdc9d1ab3b in zebra_read_route bgpd/bgp_zebra.c:595
#6 0x7f81fc02bd8a in zclient_read lib/zclient.c:4425
#7 0x7f81fbffbb8f in event_call lib/event.c:1969
#8 0x7f81fbf3e462 in frr_run lib/libfrr.c:1213
#9 0x55cdc9af854b in main bgpd/bgp_main.c:510
#10 0x7f81faf80c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Indirect leak of 56 byte(s) in 7 object(s) allocated from:
#0 0x7f81fc562b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
#1 0x7f81fbf5aee3 in qmalloc lib/memory.c:100
#2 0x55cdc9b28eb8 in ecommunity_dup bgpd/bgp_ecommunity.c:256
#3 0x55cdc9bd68eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x55cdc9bd93b3 in vpn_leak_from_vrf_update_all bgpd/bgp_mplsvpn.c:2005
#5 0x55cdc9cd6abc in vpn_leak_postchange bgpd/bgp_mplsvpn.h:287
#6 0x55cdc9cd6abc in af_label_vpn_export_allocation_mode_magic bgpd/bgp_vty.c:9464
#7 0x55cdc9cd6abc in af_label_vpn_export_allocation_mode bgpd/bgp_vty_clippy.c:2809
#8 0x7f81fbede511 in cmd_execute_command_real lib/command.c:978
#9 0x7f81fbede9d5 in cmd_execute_command lib/command.c:1036
#10 0x7f81fbedee54 in cmd_execute lib/command.c:1203
#11 0x7f81fc007e20 in vty_command lib/vty.c:591
#12 0x7f81fc0082cb in vty_execute lib/vty.c:1354
#13 0x7f81fc010b95 in vtysh_read lib/vty.c:2362
#14 0x7f81fbffbb8f in event_call lib/event.c:1969
#15 0x7f81fbf3e462 in frr_run lib/libfrr.c:1213
#16 0x55cdc9af854b in main bgpd/bgp_main.c:510
#17 0x7f81faf80c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Indirect leak of 56 byte(s) in 7 object(s) allocated from:
#0 0x7f81fc562b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
#1 0x7f81fbf5aee3 in qmalloc lib/memory.c:100
#2 0x55cdc9b28eb8 in ecommunity_dup bgpd/bgp_ecommunity.c:256
#3 0x55cdc9bd68eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x55cdc9bd93b3 in vpn_leak_from_vrf_update_all bgpd/bgp_mplsvpn.c:2005
#5 0x55cdc9cd5ebb in vpn_leak_postchange bgpd/bgp_mplsvpn.h:287
#6 0x55cdc9cd5ebb in af_label_vpn_export_magic bgpd/bgp_vty.c:9547
#7 0x55cdc9cd5ebb in af_label_vpn_export bgpd/bgp_vty_clippy.c:2868
#8 0x7f81fbede511 in cmd_execute_command_real lib/command.c:978
#9 0x7f81fbede9d5 in cmd_execute_command lib/command.c:1036
#10 0x7f81fbedee54 in cmd_execute lib/command.c:1203
#11 0x7f81fc007e20 in vty_command lib/vty.c:591
#12 0x7f81fc0082cb in vty_execute lib/vty.c:1354
#13 0x7f81fc010b95 in vtysh_read lib/vty.c:2362
#14 0x7f81fbffbb8f in event_call lib/event.c:1969
#15 0x7f81fbf3e462 in frr_run lib/libfrr.c:1213
#16 0x55cdc9af854b in main bgpd/bgp_main.c:510
#17 0x7f81faf80c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Indirect leak of 56 byte(s) in 7 object(s) allocated from:
#0 0x7f81fc562b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
#1 0x7f81fbf5aee3 in qmalloc lib/memory.c:100
#2 0x55cdc9b28eb8 in ecommunity_dup bgpd/bgp_ecommunity.c:256
#3 0x55cdc9bd68eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x55cdc9c4686d in bgp_update bgpd/bgp_route.c:4969
#5 0x55cdc9c4934d in bgp_nlri_parse_ip bgpd/bgp_route.c:6213
#6 0x55cdc9bfaa0e in bgp_nlri_parse bgpd/bgp_packet.c:341
#7 0x55cdc9bfcf7c in bgp_update_receive bgpd/bgp_packet.c:2220
#8 0x55cdc9c08474 in bgp_process_packet bgpd/bgp_packet.c:3386
#9 0x7f81fbffbb8f in event_call lib/event.c:1969
#10 0x7f81fbf3e462 in frr_run lib/libfrr.c:1213
#11 0x55cdc9af854b in main bgpd/bgp_main.c:510
#12 0x7f81faf80c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Indirect leak of 48 byte(s) in 6 object(s) allocated from:
#0 0x7f81fc562b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
#1 0x7f81fbf5aee3 in qmalloc lib/memory.c:100
#2 0x55cdc9b28eb8 in ecommunity_dup bgpd/bgp_ecommunity.c:256
#3 0x55cdc9bd68eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x55cdc9bf4289 in evaluate_paths bgpd/bgp_nht.c:1384
#5 0x55cdc9bf5b0b in bgp_process_nexthop_update bgpd/bgp_nht.c:733
#6 0x55cdc9bf6027 in bgp_parse_nexthop_update bgpd/bgp_nht.c:934
#7 0x55cdc9d1b163 in bgp_read_nexthop_update bgpd/bgp_zebra.c:104
#8 0x7f81fc02bd8a in zclient_read lib/zclient.c:4425
#9 0x7f81fbffbb8f in event_call lib/event.c:1969
#10 0x7f81fbf3e462 in frr_run lib/libfrr.c:1213
#11 0x55cdc9af854b in main bgpd/bgp_main.c:510
#12 0x7f81faf80c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Indirect leak of 16 byte(s) in 2 object(s) allocated from:
#0 0x7f81fc562b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
#1 0x7f81fbf5aee3 in qmalloc lib/memory.c:100
#2 0x55cdc9b28eb8 in ecommunity_dup bgpd/bgp_ecommunity.c:256
#3 0x55cdc9bd68eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x55cdc9bf4188 in evaluate_paths bgpd/bgp_nht.c:1348
#5 0x55cdc9bf5b0b in bgp_process_nexthop_update bgpd/bgp_nht.c:733
#6 0x55cdc9bf6027 in bgp_parse_nexthop_update bgpd/bgp_nht.c:934
#7 0x55cdc9d1b163 in bgp_read_nexthop_update bgpd/bgp_zebra.c:104
#8 0x7f81fc02bd8a in zclient_read lib/zclient.c:4425
#9 0x7f81fbffbb8f in event_call lib/event.c:1969
#10 0x7f81fbf3e462 in frr_run lib/libfrr.c:1213
#11 0x55cdc9af854b in main bgpd/bgp_main.c:510
#12 0x7f81faf80c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Indirect leak of 16 byte(s) in 2 object(s) allocated from:
#0 0x7f81fc562b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
#1 0x7f81fbf5aee3 in qmalloc lib/memory.c:100
#2 0x55cdc9b28eb8 in ecommunity_dup bgpd/bgp_ecommunity.c:256
#3 0x55cdc9bd68eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x55cdc9bd93b3 in vpn_leak_from_vrf_update_all bgpd/bgp_mplsvpn.c:2005
#5 0x55cdc9bdafd5 in vpn_leak_postchange bgpd/bgp_mplsvpn.h:287
#6 0x55cdc9bdafd5 in vpn_leak_label_callback bgpd/bgp_mplsvpn.c:581
#7 0x55cdc9bb2606 in lp_cbq_docallback bgpd/bgp_labelpool.c:118
#8 0x7f81fc0164b5 in work_queue_run lib/workqueue.c:266
#9 0x7f81fbffbb8f in event_call lib/event.c:1969
#10 0x7f81fbf3e462 in frr_run lib/libfrr.c:1213
#11 0x55cdc9af854b in main bgpd/bgp_main.c:510
#12 0x7f81faf80c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Indirect leak of 8 byte(s) in 1 object(s) allocated from:
#0 0x7f81fc562b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
#1 0x7f81fbf5aee3 in qmalloc lib/memory.c:100
#2 0x55cdc9b28eb8 in ecommunity_dup bgpd/bgp_ecommunity.c:256
#3 0x55cdc9bd68eb in vpn_leak_from_vrf_update bgpd/bgp_mplsvpn.c:1628
#4 0x55cdc9c52406 in bgp_redistribute_add bgpd/bgp_route.c:8692
#5 0x55cdc9d1ab3b in zebra_read_route bgpd/bgp_zebra.c:595
#6 0x7f81fc02bd8a in zclient_read lib/zclient.c:4425
#7 0x7f81fbffbb8f in event_call lib/event.c:1969
#8 0x7f81fbf3e462 in frr_run lib/libfrr.c:1213
#9 0x55cdc9af854b in main bgpd/bgp_main.c:510
#10 0x7f81faf80c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
SUMMARY: AddressSanitizer: 1536 byte(s) leaked in 64 allocation(s).
***********************************************************************************
Igor Ryzhov [Tue, 10 Oct 2023 21:15:32 +0000 (00:15 +0300)]
build: add -Wimplicit-fallthrough
Also:
- replace all /* fallthrough */ comments with portable fallthrough;
pseudo keyword to accomodate both gcc and clang
- add missing break; statements as required by older versions of gcc
- cleanup some code to remove unnecessary fallthrough
Keelan10 [Thu, 12 Oct 2023 14:04:52 +0000 (18:04 +0400)]
nhrpd: Fix nhrp_peer leak
- Addressed memory leak by removing `&c->peer_notifier` from the notifier list on termination. Retaining it caused the notifier list to stay active, preventing the deletion of `c->cur.peer`
thereby causing a memory leak.
- Reordered termination steps to call `vrf_terminate` before `nhrp_vc_terminate`, preventing a heap-use-after-free issue when `nhrp_vc_notify_del` is invoked in `nhrp_peer_check_delete`.
- Added an if statement to avoid passing NULL as hash to `hash_release`, which leads to a SIGSEGV.
The ASan leak log for reference:
```
***********************************************************************************
Address Sanitizer Error detected in nhrp_topo.test_nhrp_topo/r1.asan.nhrpd.20265
Direct leak of 112 byte(s) in 1 object(s) allocated from:
#0 0x7f80270c9b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
#1 0x7f8026ac1eb8 in qmalloc lib/memory.c:100
#2 0x560fd648f0a6 in nhrp_peer_create nhrpd/nhrp_peer.c:175
#3 0x7f8026a88d3f in hash_get lib/hash.c:147
#4 0x560fd6490a5d in nhrp_peer_get nhrpd/nhrp_peer.c:228
#5 0x560fd648a51a in nhrp_nhs_resolve_cb nhrpd/nhrp_nhs.c:297
#6 0x7f80266b000f in resolver_cb_literal lib/resolver.c:234
#7 0x7f8026b62e0e in event_call lib/event.c:1969
#8 0x7f8026aa5437 in frr_run lib/libfrr.c:1213
#9 0x560fd6488b4f in main nhrpd/nhrp_main.c:166
#10 0x7f8025eb2c86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
SUMMARY: AddressSanitizer: 112 byte(s) leaked in 1 allocation(s).
***********************************************************************************
***********************************************************************************
Address Sanitizer Error detected in nhrp_topo.test_nhrp_topo/r2.asan.nhrpd.20400
Direct leak of 112 byte(s) in 1 object(s) allocated from:
#0 0x7fb6e3ca5b40 in __interceptor_malloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xdeb40)
#1 0x7fb6e369deb8 in qmalloc lib/memory.c:100
#2 0x562652de40a6 in nhrp_peer_create nhrpd/nhrp_peer.c:175
#3 0x7fb6e3664d3f in hash_get lib/hash.c:147
#4 0x562652de5a5d in nhrp_peer_get nhrpd/nhrp_peer.c:228
#5 0x562652de1e8e in nhrp_packet_recvraw nhrpd/nhrp_packet.c:325
#6 0x7fb6e373ee0e in event_call lib/event.c:1969
#7 0x7fb6e3681437 in frr_run lib/libfrr.c:1213
#8 0x562652dddb4f in main nhrpd/nhrp_main.c:166
#9 0x7fb6e2a8ec86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
SUMMARY: AddressSanitizer: 112 byte(s) leaked in 1 allocation(s).
***********************************************************************************
```
Mark Stapp [Thu, 12 Oct 2023 13:59:44 +0000 (09:59 -0400)]
zebra: add RTM_xxxCHAIN message codes, ignore
We may receive some xxxCHAIN netlink messages, but we ignore
them (currently). Add them to the basic handler callback so
that we don't log errors about them.
ospfd: Fixing infinite loop when listing OSPF interfaces
The problem was happening because the ospf->oiflist has this behaviour, each interface was removed and added at the end of the list in each ospf_network_run_subnet call, generation an infinite loop.
As a solution, a copy of the list was generated and we interacted with a fixed list.
Donald Sharp [Fri, 6 Oct 2023 16:48:38 +0000 (12:48 -0400)]
bgpd: Convert the bgp_advertise_attr->adv to a fifo
BGP is storing outgoing updates in a couple of different
fifo's. This is to ensure proper packet packing of
all bgp_dests that happen to use the same attribute.
How it's all put together currently: On initial update
BGP walks through all the bgp_dest's in a table. For each
path being sent a bgp_advertise is created. This bgp_advertise
is placed in fifo order on the bgp_synchronize->update queue.
The bgp_advertise has a pointer to the bgp_advertise_attr which
is associated iwth the actual attribute that is being sent to
it's peer. In turn this bgp_advertise is placed in a fifo off
of the bgp_advertise_attr structure. As such as we have paths
that share an attribute, the path/dest is placed on the
bgp_syncrhonize->update fifo as well as being placed on the fifo
associated with the advertised attribute.
On actual creation of a packet. The first item in the
bgp_synchronize->update fifo is popped. The bgp_advertise_attr
pointer is grabbed, we fill out the nlri part of the bgp packet
and then walk the bgp_advertise_attr fifo to place paths/dests in
the packet. As each path/dest is placed in the packet it is removed
from both the bgp_synchronize->update fifo and the bgp_advertise_attr
fifo.
The whole point of this change is to switch the *next, *prev
pointers in the bgp_advertise structure with a typesafe data
structure.
Direct leak of 32 byte(s) in 1 object(s) allocated from:
#0 0x7f4f47b43d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
#1 0x7f4f4753c0a8 in qcalloc lib/memory.c:105
#2 0x7f4f47559526 in nexthop_group_new lib/nexthop_group.c:270
#3 0x562ded6a39d4 in zebra_add_import_table_entry zebra/redistribute.c:681
#4 0x562ded787c35 in rib_link zebra/zebra_rib.c:3972
#5 0x562ded787c35 in rib_addnode zebra/zebra_rib.c:3993
#6 0x562ded787c35 in process_subq_early_route_add zebra/zebra_rib.c:2860
#7 0x562ded787c35 in process_subq_early_route zebra/zebra_rib.c:3138
#8 0x562ded787c35 in process_subq zebra/zebra_rib.c:3178
#9 0x562ded787c35 in meta_queue_process zebra/zebra_rib.c:3228
#10 0x7f4f475f7118 in work_queue_run lib/workqueue.c:266
#11 0x7f4f475dc7f2 in event_call lib/event.c:1969
#12 0x7f4f4751f347 in frr_run lib/libfrr.c:1213
#13 0x562ded69e818 in main zebra/main.c:486
#14 0x7f4f468ffc86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
Indirect leak of 152 byte(s) in 1 object(s) allocated from:
#0 0x7f4f47b43d28 in __interceptor_calloc (/usr/lib/x86_64-linux-gnu/libasan.so.4+0xded28)
#1 0x7f4f4753c0a8 in qcalloc lib/memory.c:105
#2 0x7f4f475510ad in nexthop_new lib/nexthop.c:376
#3 0x7f4f475539c5 in nexthop_dup lib/nexthop.c:914
#4 0x7f4f4755b27a in copy_nexthops lib/nexthop_group.c:444
#5 0x562ded6a3a1c in zebra_add_import_table_entry zebra/redistribute.c:682
#6 0x562ded787c35 in rib_link zebra/zebra_rib.c:3972
#7 0x562ded787c35 in rib_addnode zebra/zebra_rib.c:3993
#8 0x562ded787c35 in process_subq_early_route_add zebra/zebra_rib.c:2860
#9 0x562ded787c35 in process_subq_early_route zebra/zebra_rib.c:3138
#10 0x562ded787c35 in process_subq zebra/zebra_rib.c:3178
#11 0x562ded787c35 in meta_queue_process zebra/zebra_rib.c:3228
#12 0x7f4f475f7118 in work_queue_run lib/workqueue.c:266
#13 0x7f4f475dc7f2 in event_call lib/event.c:1969
#14 0x7f4f4751f347 in frr_run lib/libfrr.c:1213
#15 0x562ded69e818 in main zebra/main.c:486
#16 0x7f4f468ffc86 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x21c86)
SUMMARY: AddressSanitizer: 184 byte(s) leaked in 2 allocation(s).
***********************************************************************************
```
anlan_cs [Fri, 4 Mar 2022 13:52:27 +0000 (21:52 +0800)]
*: remove ZEBRA_INTERFACE_VRF_UPDATE
Currently when one interface changes its VRF, zebra will send these messages to
all daemons in *order*:
1) `ZEBRA_INTERFACE_DELETE` ( notify them delete from old VRF )
2) `ZEBRA_INTERFACE_VRF_UPDATE` ( notify them move from old to new VRF )
3) `ZEBRA_INTERFACE_ADD` ( notify them added into new VRF )
When daemons deal with `VRF_UPDATE`, they use
`zebra_interface_vrf_update_read()->if_lookup_by_name()`
to check the interface exist or not in old VRF. This check will always return
*NULL* because `DELETE` ( deleted from old VRF ) is already done, so can't
find this interface in old VRF.
Send `VRF_UPDATE` is redundant and unuseful. `DELETE` and `ADD` are enough,
they will deal with RB tree, so don't send this `VRF_UPDATE` message when
vrf changes.
Since all daemons have good mechanism to deal with changing vrf, and don't
use this `VRF_UPDATE` mechanism. So, it is safe to completely remove
all the code with `VRF_UPDATE`.
At each EBGP boundary, BGP path attributes are modified as per [RFC4271], which includes stripping any IBGP-only attributes.
Some networks span more than one autonomous system and require more flexibility in the propagation of path attributes. It is worth noting that these multi-AS networks have a common or single administrative entity. These networks are said to belong to One Administrative Domain (OAD). It is desirable to carry IBGP-only attributes across EBGP peerings when the peers belong to an OAD.
This document defines a new EBGP peering type known as EBGP-OAD, which is used between two EBGP peers that belong to an OAD. This document also defines rules for route announcement and processing for EBGP-OAD peers.
Mark Stapp [Thu, 5 Oct 2023 15:02:42 +0000 (11:02 -0400)]
lib,*: add vrf id to pbr rule results zapi message
The iprule/pbr rule object has a vrf id, and zebra uses
that internally, but the vrf id isn't returned to clients
who install rules and are waiting for results. Include the
vrf_id sent by the client in the zapi result notification
message; update the existing clients so they decode the id.
Mark Stapp [Thu, 5 Oct 2023 17:47:17 +0000 (13:47 -0400)]
tests: locate nhg id from json output in all_proto_startup
Don't hard-code a sharpd nhg id: those values aren't stable
if the daemons/protos/route-types change. Use json show output
to find the id in the 'resilient' nhg test case in
the all_protocol_startup suite.
Indicating the configured PIM Rendezvous Point (RP) in the MSDP SA
message
The RFC-3618, section 12.2.1, describes the fields included in the MSDP
SA message. The "RP address" field is "the address of the RP in the
domain the source has become active in".
In the most common case, we will establish an MSDP connection from RP to
RP. However, there are cases where we want to establish a MSDP
connection from an interface/address that is not the RP. Section 3 of
RFC-3618 describes that scenario as "intermediate MSDP peer". Moreover,
the RP could be another router in the PIM domain - not the one
establishing the MSDP connection.
The current implementation could be problematic even with a single
router per PIM domain. Consider the following scenario:
* There are two PIM domains, each one with a single router.
* The two routers are connected via two independent networks. Let's say
that is to provide redundancy.
* The routers are configured to establish two MSDP connections, one on
each network (redundancy again).
* A multicast source becomes active on the router 1. It will be
communicated to router 2 via two independent MSDP SA messages, one per
MSDP connection.
* Without these changes, each MSDP SA message will indicate a different
RP.
* Both RP addresses will pass the RPF check, and both MSDP sources will
be accepted.
* If the router has clients interested in that multicast group, it will
send PIM Join messages to both RPs and start receiving the multicast
traffic from both.
With the changes included in this commit, the multicast source available
in router 1 would still be communicated to router 2 twice. But both MSDP
SA messages would indicate the same RP, and one of them would be
discarded due to failure in the RPF-check failure. Also, the changes
allow us to define the RP that will be included in the MSDP SA message,
and it could be one of the interfaces used to establish the MSDP
connection, some other interface on the router, a loopback interface, or
another router in the PIM domain.
These changes should not create compatibility issues. As I mentioned, we
usually establish MSDP connections from RP to RP. In this case, the
result will be the same. We would still indicate the address used to
establish the MSDP connection if the RP is not set - I wonder if that
should even be a valid configuration.
Signed-off-by: Adriano Marto Reis <adrianomarto@gmail.com>
projects / mirror / frr.git / log