From: Or Gerlitz Date: Mon, 5 Mar 2012 16:21:44 +0000 (+0200) Subject: IB/iser: Post initial receive buffers before sending the final login request X-Git-Tag: v3.4-rc1~169^2^6 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=89e984e2c2cd14f77ccb26c47726ac7f13b70ae8;p=pandora-kernel.git IB/iser: Post initial receive buffers before sending the final login request An iser target may send iscsi NO-OP PDUs as soon as it marks the iSER iSCSI session as fully operative. This means that there is window where there are no posted receive buffers on the initiator side, so it's possible for the iSER RC connection to break because of RNR NAK / retry errors. To fix this, rely on the flags bits in the login request to have FFP (0x3) in the lower nibble as a marker for the final login request, and post an initial chunk of receive buffers before sending that login request instead of after getting the login response. Signed-off-by: Or Gerlitz Cc: Signed-off-by: Roland Dreier --- Reading git-diff-tree failed