Le 08/02/2019 à 05:11, Callum Sinclair a écrit : > Currently the only way to clear the mfc cache was to delete the entries mfc stands for 'multicast forwarding cache', so 'mfc cache' is a bit strange.
> one by one using the MRT_DEL_MFC socket option or to destroy and > recreate the socket. Note that if entries were added with MRT_ADD_MFC_PROXY, they will survive to the socket destruction. This is not the case with your new cmd. Is it intended? Maybe a third option (something like MRT_FLUSH_MFC_PROXY) would be useful to avoid confusion? > > Create a new socket option which will clear the multicast forwarding > cache on the socket without destroying the socket. The new socket option > MRT_FLUSH_ENTRIES will clear all multicast entries on the sockets table > and the MRT_FLUSH_VIFS will delete all multicast vifs on the socket > table. > > Signed-off-by: Callum Sinclair <callum.sincl...@alliedtelesis.co.nz> > --- > include/uapi/linux/mroute.h | 7 +++- > include/uapi/linux/mroute6.h | 7 +++- > net/ipv4/ipmr.c | 69 ++++++++++++++++++++------------- > net/ipv6/ip6mr.c | 74 ++++++++++++++++++++++-------------- > 4 files changed, 100 insertions(+), 57 deletions(-) > > diff --git a/include/uapi/linux/mroute.h b/include/uapi/linux/mroute.h > index 5d37a9ccce63..673495ca3495 100644 > --- a/include/uapi/linux/mroute.h > +++ b/include/uapi/linux/mroute.h > @@ -28,12 +28,17 @@ > #define MRT_TABLE (MRT_BASE+9) /* Specify mroute table ID > */ > #define MRT_ADD_MFC_PROXY (MRT_BASE+10) /* Add a (*,*|G) mfc entry > */ > #define MRT_DEL_MFC_PROXY (MRT_BASE+11) /* Del a (*,*|G) mfc entry > */ > -#define MRT_MAX (MRT_BASE+11) > +#define MRT_FLUSH (MRT_BASE+12) /* Flush all multicast entries and vifs > */ nit: "Flush all mfc entries and/or vifs" ? > +#define MRT_MAX (MRT_BASE+12) > > #define SIOCGETVIFCNT SIOCPROTOPRIVATE /* IP protocol privates > */ > #define SIOCGETSGCNT (SIOCPROTOPRIVATE+1) > #define SIOCGETRPF (SIOCPROTOPRIVATE+2) > > +/* MRT_FLUSH optional flags */ > +#define MRT_FLUSH_ENTRIES 1 /* For flushing all multicast entries */ Maybe MRT_FLUSH_MFC is more consistent with the previous naming (MRT_ADD_MFC, etc.) Regards, Nicolas
