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[CCID3]: Move NULL-protection into function

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This moves several instances of testing against NULL into the function which is
used to de-reference the CCID-private data.

Committer note: Made the BUG_ON depend on having CONFIG_IP_DCCP_CCID3_DEBUG, as it
                is too much to have this on production code. Also made sure that
                the macro is used only after checking if sk_state is not LISTEN,
                to make it equivalent to what we had before.

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@ghostprotocols.net>
This commit is contained in:
Gerrit Renker
2007-09-26 11:24:28 -03:00
committed by David S. Miller
parent 08831700cc
commit 2e86908f7d
2 changed files with 24 additions and 31 deletions
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20
net/dccp/ccids/ccid3.h
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@@ -117,6 +117,15 @@ struct ccid3_hc_tx_sock {
struct ccid3_options_received ccid3hctx_options_received;
};
static inline struct ccid3_hc_tx_sock *ccid3_hc_tx_sk(const struct sock *sk)
{
struct ccid3_hc_tx_sock *hctx = ccid_priv(dccp_sk(sk)->dccps_hc_tx_ccid);
#ifdef CONFIG_IP_DCCP_CCID3_DEBUG
BUG_ON(hctx == NULL);
#endif
return hctx;
}
/* TFRC receiver states */
enum ccid3_hc_rx_states {
TFRC_RSTATE_NO_DATA = 1,
@@ -161,14 +170,13 @@ struct ccid3_hc_rx_sock {
u32 ccid3hcrx_elapsed_time;
};
static inline struct ccid3_hc_tx_sock *ccid3_hc_tx_sk(const struct sock *sk)
{
return ccid_priv(dccp_sk(sk)->dccps_hc_tx_ccid);
}
static inline struct ccid3_hc_rx_sock *ccid3_hc_rx_sk(const struct sock *sk)
{
return ccid_priv(dccp_sk(sk)->dccps_hc_rx_ccid);
struct ccid3_hc_rx_sock *hcrx = ccid_priv(dccp_sk(sk)->dccps_hc_rx_ccid);
#ifdef CONFIG_IP_DCCP_CCID3_DEBUG
BUG_ON(hcrx == NULL);
#endif
return hcrx;
}
#endif /* _DCCP_CCID3_H_ */