> Long, My Chelsio(iWARP) NIC reports this value as 4. When I set it with hw
> report value in cifs.ko, There is kernel oops in cifs.ko. Have you checked smb-
> direct of cifs.ko with Chelsio and any iWARP NICs before ? or only Mellanox
> NICs ?
>
> Thanks!
Yes, I have tested on Chelsio. I didn't see kernel panic. In fact, I can pass a larger value (8) and successfully create a QP on Chelsio.
Can you paste your kernel panic trace?
> >> > If the CIFS upper layer ever sends data with larger number of SGEs,
> >> > the send will fail.
> >> >
> >> > Long
> >> >
> >> >>
> >> >> Tom.
> >> >>
> >> >> > diff --git a/fs/cifs/smbdirect.h b/fs/cifs/smbdirect.h index
> >> >> > a87fca82a796..7003722ab004 100644
> >> >> > --- a/fs/cifs/smbdirect.h
> >> >> > +++ b/fs/cifs/smbdirect.h
> >> >> > @@ -226,7 +226,7 @@ struct smbd_buffer_descriptor_v1 {
> >> >> > } __packed;
> >> >> >
> >> >> > /* Default maximum number of SGEs in a RDMA send/recv */
> >> >> > -#define SMBDIRECT_MAX_SGE 16
> >> >> > +#define SMBDIRECT_MAX_SGE 6
> >> >> > /* The context for a SMBD request */
> >> >> > struct smbd_request {
> >> >> > struct smbd_connection *info; diff --git
> >> >> > a/fs/ksmbd/transport_rdma.c b/fs/ksmbd/transport_rdma.c index
> >> >> > e646d79554b8..70662b3bd590 100644
> >> >> > --- a/fs/ksmbd/transport_rdma.c
> >> >> > +++ b/fs/ksmbd/transport_rdma.c
> >> >> > @@ -42,7 +42,7 @@
> >> >> > /* SMB_DIRECT negotiation timeout in seconds */
> >> >> > #define SMB_DIRECT_NEGOTIATE_TIMEOUT 120
> >> >> >
> >> >> > -#define SMB_DIRECT_MAX_SEND_SGES 8
> >> >> > +#define SMB_DIRECT_MAX_SEND_SGES 6
> >> >> > #define SMB_DIRECT_MAX_RECV_SGES 1
> >> >> >
> >> >> > /*
> >> >> >
> >> >> > Thanks!
> >> >> >>
> >> >> >> Tom.
> >> >> >>
> >> >> >
> >> >
> >
