2007/11/10, Gerrit Renker <[EMAIL PROTECTED]>:
> | [CCID-3/4] Share ccid3_tx_state_name function via tfrc_ccids
>
> There is a build problem in declaring the following routines as shared:
>
> #if defined(CONFIG_IP_DCCP_CCID3_DEBUG) || defined(CONFIG_IP_DCCP_CCID4_DEBUG)
> static const char *tfrc_tx_state_name(enum tfrc_hc_tx_states state)
> {
> /* ... */
> }
> #endif
>
> #if defined(CONFIG_IP_DCCP_CCID3_DEBUG) || defined(CONFIG_IP_DCCP_CCID4_DEBUG)
> static const char *tfrc_rx_state_name(enum tfrc_hc_rx_states state)
> {
> /* ... */
> #endif
>
> When enabling CCID3_DEBUG, but not CCID4_DEBUG, the following build warnings
> result:
>
> /usr/src/davem-2.6/net/dccp/ccids/lib/tfrc_ccids.h:163: warning:
> 'tfrc_tx_state_name' defined but not used
> /usr/src/davem-2.6/net/dccp/ccids/lib/tfrc_ccids.h:180: warning:
> 'tfrc_rx_state_name' defined but not used
>
> The reason is that the header file is #included in ccid4.c and this function
> is only called from
> within ccid4_pr_debug(). But when CCID4_DEBUG is disabled, this macro expands
> to an emptry string,
> so the compiler thinks that tfrc_{rx,tx}_state_name() is not used -- which is
> actually the case.
>
> So not very happy with the above solution. When getting serious about
> abstracting and sharing
> common code, the best think is probably to use a single debugging function,
> tfrc_pr_debug.
> This would be enabled when at least one of CCID3_DEBUG or CCID4_DEBUG is
> enabled, and one could
> add some magic that the module parameters influence the boolean variable
> tfrc_debug.
>
> The same could be done for the RTO timer - since the identical menu appears
> in both places.
>
> Maybe it is better for the moment to `un-share' the code.
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>
Yes Gerrit, this is one of the point that I will talk to you about. I
also agree with you, the best for the moment is to "un-share" this
function.
Leandro.
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