So the swine’s going back to work, protecting home and family (7)
I believe the answer is:
oinking
'so the swine's going' is the definition.
(a swine or pig goes oink)
'work protecting home and family' is the wordplay.
'work' becomes 'og' (I can't explain this - if you can you should believe this answer much more).
'protecting' is an insertion indicator (inserted letters are held or protected).
'home' becomes 'in' ('he's home' can mean 'he's in').
'and' means one lot of letters go next to another.
'family' becomes 'kin' (synonyms).
'in'+'kin'='inkin'
'og' placed around 'inkin' is 'OINKING'.
'back to' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.
(Other definitions for oinking that I've seen before include "farmyard noises" , "Sound from pen" , "Noise from Tamworth" .)