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| author | Carmine Scarpitta <carmine.scarpitta@uniroma2.it> | 2023-03-12 21:19:12 +0100 |
|---|---|---|
| committer | Carmine Scarpitta <carmine.scarpitta@uniroma2.it> | 2023-09-11 22:11:28 +0200 |
| commit | dce3e4515f09769e4a7bc610eae96ffb3a93f7c6 (patch) | |
| tree | dc33a76db4e3dddf8ebf2676d07dd3959969a7a9 /isisd | |
| parent | isisd: Add free func for Sub-Sub-TLVs in general (diff) | |
| download | frr-dce3e4515f09769e4a7bc610eae96ffb3a93f7c6.tar.xz frr-dce3e4515f09769e4a7bc610eae96ffb3a93f7c6.zip | |
isisd: Add pack func for Sub-Sub-TLVs in general
Add a function to pack all the Sub-Sub-TLVs passed as an argument.
At this time, this function does not pack any Sub-Sub-TLVs because no
Sub-Sub-TLVs have been defined yet. This function will be extended in
future commits to pack specific Sub-Sub-TLVs, as they become supported.
Signed-off-by: Carmine Scarpitta <carmine.scarpitta@uniroma2.it>
Diffstat (limited to 'isisd')
| -rw-r--r-- | isisd/isis_tlvs.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/isisd/isis_tlvs.c b/isisd/isis_tlvs.c index 50110a4e2..117c90a8a 100644 --- a/isisd/isis_tlvs.c +++ b/isisd/isis_tlvs.c @@ -2014,6 +2014,25 @@ static void isis_free_subsubtlvs(struct isis_subsubtlvs *subsubtlvs) XFREE(MTYPE_ISIS_SUBSUBTLV, subsubtlvs); } +static int isis_pack_subsubtlvs(struct isis_subsubtlvs *subsubtlvs, + struct stream *s) +{ + int rv; + size_t subsubtlv_len_pos = stream_get_endp(s); + + if (STREAM_WRITEABLE(s) < 1) + return 1; + + stream_putc(s, 0); /* Put 0 as Sub-Sub-TLVs length, filled in later */ + + size_t subsubtlv_len = stream_get_endp(s) - subsubtlv_len_pos - 1; + if (subsubtlv_len > 255) + return 1; + + stream_putc_at(s, subsubtlv_len_pos, subsubtlv_len); + return 0; +} + /* Functions related to subtlvs */ static struct isis_subtlvs *isis_alloc_subtlvs(enum isis_tlv_context context) |