FBSD-13 - Vale maximum virtual switches.
- Reply: Vincenzo Maffione : "Re: FBSD-13 - Vale maximum virtual switches."
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Date: Thu, 03 Mar 2022 18:06:32 UTC
Hi Everyone, The other day had to simulate a network topology and I wanted to use vale switches instead of in-kernel bridges. After creating a few switches I notice that there was a hard limit of 8 switches ( that is clearly stated on the man page). For my simulation I needed 32 virtual switches, hence I increase the value of NM_BRIDGES from 8 to 64. After that I was able to create the bridges and they seem to work fine. My question is, do we need that hard limit on 8? Should this be change to a dynamic value set with sysctl? Best regards. Santi diff --git a/sys/dev/netmap/netmap_bdg.h b/sys/dev/netmap/netmap_bdg.h index e4683885e66c..3afe1d9d5d99 100644 --- a/sys/dev/netmap/netmap_bdg.h +++ b/sys/dev/netmap/netmap_bdg.h @@ -73,8 +73,8 @@struct netmap_bdg_ops { int netmap_bwrap_attach(const char *name, struct netmap_adapter *, struct netmap_bdg_ops *); int netmap_bdg_regops(const char *name, struct netmap_bdg_ops *bdg_ops, void *private_data, void *auth_token); -#define NM_BRIDGES 8 /* number of bridges */ -#define NM_BDG_MAXPORTS 254 /* up to 254 */ +#define NM_BRIDGES 64 /* number of bridges */ +#define NM_BDG_MAXPORTS 16 /* up to 254 */ #define NM_BDG_BROADCAST NM_BDG_MAXPORTS #define NM_BDG_NOPORT (NM_BDG_MAXPORTS+1)