sctp: make use of pre-calculated len
authorMarcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Mon, 8 Jan 2018 21:02:29 +0000 (19:02 -0200)
committerDavid S. Miller <davem@davemloft.net>
Wed, 10 Jan 2018 19:53:22 +0000 (14:53 -0500)
commitc76f97c99ae6d26d14c7f0e50e074382bfbc9f98
treeda82823b2b3fa04568f7ab98c984476728ea6cbc
parent5960cefab9df76600a1a7d4ff592c59e14616e88
sctp: make use of pre-calculated len

Some sockopt handling functions were calculating the length of the
buffer to be written to userspace and then calculating it again when
actually writing the buffer, which could lead to some write not using
an up-to-date length.

This patch updates such places to just make use of the len variable.

Also, replace some sizeof(type) to sizeof(var).

Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
net/sctp/socket.c