freebsd-skq/sys/rpc
Rick Macklem 9c2065607f Change the xid for client side krpc over UDP to a global value.
Without this patch, the xid used for the client side krpc requests over
UDP was initialized for each "connection". A "connection" for UDP is
rather sketchy and for the kernel NLM a new one is created every 2minutes.
A problem with client side interoperability with a Netapp server for the NLM
was reported and it is believed to be caused by reuse of the same xid.
Although this was never completely diagnosed by the reporter, I could see
how the same xid might get reused, since it is initialized to a value
based on the TOD clock every two minutes.
I suspect initializing the value for every "connection" was inherited from
userland library code, where having a global xid was not practical.
However, implementing a global "xid" for the kernel rpc is straightforward
and will ensure that an xid value is not reused for a long time. This
patch does that and is hoped it will fix the Netapp interoperability
problem.

PR:		245022
Reported by:	danny@cs.huji.ac.il
MFC after:	2 weeks
2020-04-05 21:08:17 +00:00
..
rpcsec_gss Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
auth_none.c
auth_unix.c
auth.h
authunix_prot.c
clnt_bck.c
clnt_dg.c Change the xid for client side krpc over UDP to a global value. 2020-04-05 21:08:17 +00:00
clnt_rc.c
clnt_stat.h
clnt_vc.c
clnt.h
getnetconfig.c
krpc.h
netconfig.h
nettype.h
pmap_prot.h
replay.c
replay.h
rpc_callmsg.c
rpc_com.h
rpc_generic.c Remove obsolete old-freebsd version compat shim. 2020-03-01 23:01:51 +00:00
rpc_msg.h
rpc_prot.c
rpc.h
rpcb_clnt.c
rpcb_clnt.h
rpcb_prot.c
rpcb_prot.h
rpcm_subs.h
rpcsec_gss.h
svc_auth_unix.c
svc_auth.c
svc_auth.h
svc_dg.c
svc_generic.c
svc_vc.c
svc.c Mark more nodes as CTLFLAG_MPSAFE or CTLFLAG_NEEDGIANT (17 of many) 2020-02-26 14:26:36 +00:00
svc.h
types.h
xdr.h