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PPP: disable VJ support by default

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VJ support is known to be broken when built with some compiler
optimizations enabled, disabling it by default until someone needs it
and fixes it.

It was mostly used with dial-up modems, it is useless with PPPoE and
PPPoL2TP and is probably useless as well with cellular modems, so
disabling it by default makes sense anyway.
This commit is contained in:
Sylvain Rochet 2020-10-16 22:20:11 +02:00
parent 729b3da96d
commit bedb4e4745
2 changed files with 4 additions and 2 deletions
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2
contrib/examples/example_app/lwipopts.h
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@ -303,7 +303,7 @@ a lot of data that needs to be copied, this should be set high. */
#define MSCHAP_SUPPORT 0 /* Set > 0 for MSCHAP */
#define CBCP_SUPPORT 0 /* Set > 0 for CBCP (NOT FUNCTIONAL!) */
#define CCP_SUPPORT 0 /* Set > 0 for CCP */
#define VJ_SUPPORT 1 /* Set > 0 for VJ header compression. */
#define VJ_SUPPORT 0 /* Set > 0 for VJ header compression. */
#define MD5_SUPPORT 1 /* Set > 0 for MD5 (see also CHAP) */
#endif /* PPP_SUPPORT */

4
src/include/netif/ppp/ppp_opts.h
View File

@ -311,9 +311,11 @@
/**
* VJ_SUPPORT==1: Support VJ header compression.
*
* BEWARE: It is known to be broken when built with some compiler optimizations enabled.
*/
#ifndef VJ_SUPPORT
#define VJ_SUPPORT 1
#define VJ_SUPPORT 0
#endif
/* VJ compression is only supported for TCP over IPv4 over PPPoS. */
#if !PPPOS_SUPPORT || !PPP_IPV4_SUPPORT || !LWIP_TCP