From mboxrd@z Thu Jan 1 00:00:00 1970 From: Devesh Sharma Subject: [RESEND rdma-core v4 2/8] libbnxt_re: Add support for user memory regions Date: Fri, 21 Apr 2017 14:57:06 -0400 Message-ID: <1492801032-17587-3-git-send-email-devesh.sharma@broadcom.com> References: <1492801032-17587-1-git-send-email-devesh.sharma@broadcom.com> Return-path: In-Reply-To: <1492801032-17587-1-git-send-email-devesh.sharma-dY08KVG/lbpWk0Htik3J/w@public.gmane.org> Sender: linux-rdma-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-rdma@vger.kernel.org This patch adds code to allow user applications to register and unregister memory buffers with the HCA. Following functions are now supported: - ibv_reg_mr() - ibv_dereg_mr() Signed-off-by: Sriharsha Basavapatna Signed-off-by: Somnath Kotur Signed-off-by: Selvin Xavier Signed-off-by: Devesh Sharma --- providers/bnxt_re/bnxt_re-abi.h | 4 ++++ providers/bnxt_re/verbs.c | 26 ++++++++++++++++++++++++-- 2 files changed, 28 insertions(+), 2 deletions(-) diff --git a/providers/bnxt_re/bnxt_re-abi.h b/providers/bnxt_re/bnxt_re-abi.h index 05a0888..53645d5 100644 --- a/providers/bnxt_re/bnxt_re-abi.h +++ b/providers/bnxt_re/bnxt_re-abi.h @@ -56,4 +56,8 @@ struct bnxt_re_pd_resp { __u64 dbr; }; +struct bnxt_re_mr_resp { + struct ibv_reg_mr_resp resp; +}; + #endif diff --git a/providers/bnxt_re/verbs.c b/providers/bnxt_re/verbs.c index 3993c61..f67e37d 100644 --- a/providers/bnxt_re/verbs.c +++ b/providers/bnxt_re/verbs.c @@ -131,12 +131,34 @@ int bnxt_re_free_pd(struct ibv_pd *ibvpd) struct ibv_mr *bnxt_re_reg_mr(struct ibv_pd *ibvpd, void *sva, size_t len, int access) { - return NULL; + struct bnxt_re_mr *mr; + struct ibv_reg_mr cmd; + struct bnxt_re_mr_resp resp; + + mr = calloc(1, sizeof(*mr)); + if (!mr) + return NULL; + + if (ibv_cmd_reg_mr(ibvpd, sva, len, (uintptr_t)sva, access, &mr->ibvmr, + &cmd, sizeof(cmd), &resp.resp, sizeof(resp))) { + free(mr); + return NULL; + } + + return &mr->ibvmr; } int bnxt_re_dereg_mr(struct ibv_mr *ibvmr) { - return -ENOSYS; + struct bnxt_re_mr *mr = (struct bnxt_re_mr *)ibvmr; + int status; + + status = ibv_cmd_dereg_mr(ibvmr); + if (status) + return status; + free(mr); + + return 0; } struct ibv_cq *bnxt_re_create_cq(struct ibv_context *ibvctx, int ncqe, -- 1.8.3.1 -- 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