iovector changes in kernel versions from 3.19

[Sreejith M M]

I have sendmsg function which sends messages using iovec array.
I am not understanding the new way of getting the length and getting the
data from msghdr from the sendmsg api. Has the sendmsg api signature
changed recently in kernel? Where do I find more iovec apis?

-- 
Regards,
Sreejith
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