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[DCCP]: Allow to parse options on Request Sockets

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The option parsing code currently only parses on full sk's. This causes a problem for
options sent during the initial handshake (in particular timestamps and feature-negotiation
options). Therefore, this patch extends the option parsing code with an additional argument
for request_socks: if it is non-NULL, options are parsed on the request socket, otherwise
the normal path (parsing on the sk) is used.

Subsequent patches, which implement feature negotiation during connection setup, make use
of this facility.

Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Signed-off-by: Ian McDonald <ian.mcdonald@jandi.co.nz>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Gerrit Renker 2007-12-13 12:29:24 -02:00 • committed by David S. Miller
parent 7913350663
commit 8b81941248
5 changed files with 37 additions and 24 deletions
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5
include/linux/dccp.h
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@ -407,8 +407,6 @@ struct dccp_opt_pend {
extern void dccp_minisock_init(struct dccp_minisock *dmsk);
extern int dccp_parse_options(struct sock *sk, struct sk_buff *skb);
struct dccp_request_sock {
struct inet_request_sock dreq_inet_rsk;
__u64 dreq_iss;
@ -423,6 +421,9 @@ static inline struct dccp_request_sock *dccp_rsk(const struct request_sock *req)
extern struct inet_timewait_death_row dccp_death_row;
extern int dccp_parse_options(struct sock *sk, struct dccp_request_sock *dreq,
struct sk_buff *skb);
struct dccp_options_received {
u32 dccpor_ndp; /* only 24 bits */
u32 dccpor_timestamp;