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This commit ensures proper cleanup by clearing the `algo->pdst` pointer if it points to a path that is being deleted.
It addresses memory leaks by freeing memory held by `algo->pdst` that might not have been released during the cleanup of processed paths.
The ASan leak log for reference:
```
Direct leak of 96 byte(s) in 1 object(s) allocated from:
#0 0x7fbffcec9a37 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154
#1 0x7fbffca67a81 in qcalloc ../lib/memory.c:105
#2 0x7fbffc9d1a54 in cpath_new ../lib/cspf.c:44
#3 0x7fbffc9d2829 in cspf_init ../lib/cspf.c:256
#4 0x7fbffc9d295d in cspf_init_v4 ../lib/cspf.c:287
#5 0x5601dcd34d3f in show_sharp_cspf_magic ../sharpd/sharp_vty.c:1262
#6 0x5601dcd2c2be in show_sharp_cspf sharpd/sharp_vty_clippy.c:1869
#7 0x7fbffc9afd61 in cmd_execute_command_real ../lib/command.c:993
#8 0x7fbffc9b00ee in cmd_execute_command ../lib/command.c:1052
#9 0x7fbffc9b0dc0 in cmd_execute ../lib/command.c:1218
#10 0x7fbffcb611c7 in vty_command ../lib/vty.c:591
#11 0x7fbffcb660ac in vty_execute ../lib/vty.c:1354
#12 0x7fbffcb6c4aa in vtysh_read ../lib/vty.c:2362
#13 0x7fbffcb51324 in event_call ../lib/event.c:1979
#14 0x7fbffca3b872 in frr_run ../lib/libfrr.c:1213
#15 0x5601dcd11c6f in main ../sharpd/sharp_main.c:177
#16 0x7fbffc5ffd8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
Indirect leak of 40 byte(s) in 1 object(s) allocated from:
#0 0x7fbffcec9a37 in __interceptor_calloc ../../../../src/libsanitizer/asan/asan_malloc_linux.cpp:154
#1 0x7fbffca67a81 in qcalloc ../lib/memory.c:105
#2 0x7fbffca3c108 in list_new ../lib/linklist.c:49
#3 0x7fbffc9d1acc in cpath_new ../lib/cspf.c:47
#4 0x7fbffc9d2829 in cspf_init ../lib/cspf.c:256
#5 0x7fbffc9d295d in cspf_init_v4 ../lib/cspf.c:287
#6 0x5601dcd34d3f in show_sharp_cspf_magic ../sharpd/sharp_vty.c:1262
#7 0x5601dcd2c2be in show_sharp_cspf sharpd/sharp_vty_clippy.c:1869
#8 0x7fbffc9afd61 in cmd_execute_command_real ../lib/command.c:993
#9 0x7fbffc9b00ee in cmd_execute_command ../lib/command.c:1052
#10 0x7fbffc9b0dc0 in cmd_execute ../lib/command.c:1218
#11 0x7fbffcb611c7 in vty_command ../lib/vty.c:591
#12 0x7fbffcb660ac in vty_execute ../lib/vty.c:1354
#13 0x7fbffcb6c4aa in vtysh_read ../lib/vty.c:2362
#14 0x7fbffcb51324 in event_call ../lib/event.c:1979
#15 0x7fbffca3b872 in frr_run ../lib/libfrr.c:1213
#16 0x5601dcd11c6f in main ../sharpd/sharp_main.c:177
#17 0x7fbffc5ffd8f in __libc_start_call_main ../sysdeps/nptl/libc_start_call_main.h:58
```
Signed-off-by: Keelan Cannoo <keelan.cannoo@icloud.com>
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Free path
Signed-off-by: Keelan Cannoo <keelan.cannoo@icloud.com>
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Done with a combination of regex'ing and banging my head against a wall.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
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As helper function of Segment Routing Flex Algo or RSVP-TE
add Constrained Shortest Path First algorithm able to compute
path with constraints. Supported constraints are as follow:
- Standard IGP metric
- TE IGP metric
- Delay metric
- Bandwidth for given Class of Service for bandwidth reservation (RSVP-TE)
Usage of CSPF algorithms is detailed in the doc/developer/cspf.rst file
Signed-off-by: Olivier Dugeon <olivier.dugeon@orange.com>
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