tst_inet6_opt_finish_do - Updated total length taking into account the final padding of the extension header
To check that inet6_opt_finish() can updated total length taking into account the final padding of the extension header.
./tst_inet6_opt_finish_do [-tooloption ...] -tooloption : v6api tool option
1. Calculate the needed buffer size 2. Check A: Function inet6_opt_init() return a valid buffer size 3. Updated total length taking into account the final padding 4. Check B: Initializes the option by inserting a Pad1 or PadN option 5. Updated total length taking into account the final padding 6. Check C: Initializes the option by inserting a Pad1 option 7. Updated total length which not need padding 8. Check D: Not any padding is inserted to extension header 9. Updated total length with bad offset paramter 10.Check E: Function inet6_opt_finish() return -1
None
RFC 3542
10.3. inet6_opt_finish
int inet6_opt_finish(void *extbuf, socklen_t extlen, int offset);
Offset should be the length returned by inet6_opt_init() or inet6_opt_append(). This function returns the updated total length taking into account the final padding of the extension header to make it a multiple of 8 bytes. If extbuf is not NULL the function also initializes the option by inserting a Pad1 or PadN option of the proper length.
If the necessary pad does not fit in the extension header buffer the function returns -1.