[DCCP]: Correct documentation

This corrects erroneous documentation of the socket API.
Signed-off-by: NGerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: NIan McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: NArnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

Documentation/networking/dccp.txt

@@ -55,12 +55,13 @@ be enabled at the receiver, too with suitable choice of CsCov.
 DCCP_SOCKOPT_SEND_CSCOV sets the sender checksum coverage. Values in the
 	range 0..15 are acceptable. The default setting is 0 (full coverage),
 	values between 1..15 indicate partial coverage.
-DCCP_SOCKOPT_SEND_CSCOV is for the receiver and has a different meaning: it
+DCCP_SOCKOPT_RECV_CSCOV is for the receiver and has a different meaning: it
 	sets a threshold, where again values 0..15 are acceptable. The default
 	of 0 means that all packets with a partial coverage will be discarded.
 	Values in the range 1..15 indicate that packets with minimally such a
 	coverage value are also acceptable. The higher the number, the more
-	restrictive this setting (see [RFC 4340, sec. 9.2.1]).
+	restrictive this setting (see [RFC 4340, sec. 9.2.1]). Partial coverage
+	settings are inherited to the child socket after accept().
 
 The following two options apply to CCID 3 exclusively and are getsockopt()-only.
 In either case, a TFRC info struct (defined in <linux/tfrc.h>) is returned.