From mboxrd@z Thu Jan 1 00:00:00 1970 From: Doug Ledford Subject: Re: Problem running rping over Intel adapters Date: Wed, 03 Oct 2012 17:57:44 -0400 Message-ID: <506CB4D8.4010604@redhat.com> References: <506CB0E9.90201@redhat.com> <1828884A29C6694DAF28B7E6B8A8237346A98E58@FMSMSX151.amr.corp.intel.com> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="------------enig5125CAAB0B91F80D663FF15A" Return-path: In-Reply-To: <1828884A29C6694DAF28B7E6B8A8237346A98E58-Q3cL8pyY+6ukrb+BlOpmy7fspsVTdybXVpNB7YpNyf8@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: "Hefty, Sean" Cc: "Marciniszyn, Mike" , "linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org" List-Id: linux-rdma@vger.kernel.org This is an OpenPGP/MIME signed message (RFC 2440 and 3156) --------------enig5125CAAB0B91F80D663FF15A Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable On 10/3/2012 5:50 PM, Hefty, Sean wrote: >> 1) rping, on the client side, clears the conn_params for the newly to = be >> attempted connection, then sets: >> >> conn_param.responder_resources =3D 1; >> conn_param.initiator_depth =3D 1; >> conn_param.retry_count =3D 10; >=20 >=20 >> 2) the qib driver enforces a maximum of 7 for retry_count. I don't se= e >> anything in the spec that specifies a maximum for this entry, and in >> particular I know it doesn't call out for 7 to mean infinite retries >> like it does for rnr_retry_count. >=20 > On IB, retry count is a 3-bit value. See the CM REQ message. >=20 > The kernel rdma cm should probably check for a valid value and reduce i= t accordingly. Then it's also fair to say that right now rping passes a known invalid value and needs fixed ;-) --=20 Doug Ledford GPG KeyID: 0E572FDD http://people.redhat.com/dledford Infiniband specific RPMs available at http://people.redhat.com/dledford/Infiniband --------------enig5125CAAB0B91F80D663FF15A Content-Type: application/pgp-signature; name="signature.asc" Content-Description: OpenPGP digital signature Content-Disposition: attachment; filename="signature.asc" -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.17 (MingW32) Comment: Using GnuPG with Mozilla - http://www.enigmail.net/ iQIcBAEBAgAGBQJQbLTYAAoJELgmozMOVy/dBmwP/1Mmi3qeTiHo6TjuSKjCkIue 5h6M0PvttgH5qz2uWORpQIA3PqqA95d4g2Cp4D6AQazS/AU2b/ZK2+Nzhla4AJgx TY+g5KOfnM6U6gDmF1cO5Q3IdjnPUFpC8Y2bj8E0IQM1URNYjG+bRa+2oyrd8Ush pKFyQnw652zsU2wd3XoiW0uxKDqk0c+tJv/9fbZ9CdssW+LU+UZXne6elKiNFHK4 v49APVnx8e0YyFabQ6GbxhmITX5mLlI9DVhHqFHNaPi2EqpESzejitvTPXTNWfBb uL9yZ811DZdQHBoAmOtZbxLrxaLBYM1qrdPPxEYn95rPc0AeZtHRJuKdBsclGdWd hv/eu6WySuPzNJZHBK8Ih5p13hWkXfz/VoBsgyZ2KaawqV0GP+Xf4M0P8W/RuEqf QvrdTcFVXeVu+vDS7McRxBza4AKX9ytMUWkA3vesmt9PEtEbh8osbg7Pl1S5y4eY /FmDaq4H/EoiWA64k3VNg3waA/23EgYbD6h4iOQa9UaZeRM89bST/UKp32JU5BP4 z/uJvtZcR89Iyee2deh94IqND0Ck0KUSAtENOnqaw9KxxToTW23y8sLdIFpxgeGR xQu9t26bRc77oRH+GRSPgJFdfud7oGN1H4Y4Lii9oE6U0bB2Lq/PSnlXNPWD3XKG yNlrMV5FYA5fekBcpw1V =+dFw -----END PGP SIGNATURE----- --------------enig5125CAAB0B91F80D663FF15A-- -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html