Hi aspirant...!

hope you're doing absolutely great...!

so with regard of you're query. there no special quota for karnataka for jee mains exam. But there will be home quota reservation for the nit Surathkal, formerly known as nit karnataka. you check the additional details regarding the home quote and other state quote, in the link that I am providing to you

https://engineering.careers360.com/articles/jee-main-reservation-criteria

I hope this will helps you...!

GOOD LUCK...!