From patchwork Fri Jul 1 13:19:02 2011 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Pearson X-Patchwork-Id: 938982 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by demeter1.kernel.org (8.14.4/8.14.4) with ESMTP id p61LTcRd014702 for ; Fri, 1 Jul 2011 21:49:54 GMT Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755644Ab1GAVNc (ORCPT ); Fri, 1 Jul 2011 17:13:32 -0400 Received: from cdptpa-bc-oedgelb.mail.rr.com ([75.180.133.32]:58949 "EHLO cdptpa-bc-oedgelb.mail.rr.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755175Ab1GAVNb (ORCPT ); Fri, 1 Jul 2011 17:13:31 -0400 X-Greylist: IP, sender and recipient auto-whitelisted, not delayed by milter-greylist-4.2.6 (demeter1.kernel.org [140.211.167.41]); Fri, 01 Jul 2011 21:49:55 +0000 (UTC) X-Greylist: delayed 300 seconds by postgrey-1.27 at vger.kernel.org; Fri, 01 Jul 2011 17:13:31 EDT Received: from cdptpa-bc-oedgelb.mail.rr.com ([10.127.134.102]) by cdptpa-bc-qmta01.mail.rr.com with ESMTP id <20110701211006240.BKTQ4947@cdptpa-bc-qmta01.mail.rr.com> for ; Fri, 1 Jul 2011 21:10:06 +0000 Authentication-Results: cdptpa-bc-oedgelb.mail.rr.com smtp.user=fzago@systemfabricworks.com; auth=pass (PLAIN) X-Authority-Analysis: v=1.1 cv=QcSFu2tMqX8VyBnwf4xZriMeG3TVj1s8v1Rcea0EwGI= c=1 sm=0 a=hAzdGUM1iB0A:10 a=Hd5Cfpd07-gA:10 a=ozIaqLvjkoIA:10 a=DCwX0kaxZCiV3mmbfDr8nQ==:17 a=YORvzBCaAAAA:8 a=bC7xisPkAAAA:8 a=Qb7XbiZ42qVaOXAOkD4A:9 a=OE1LcsOSMCceI6SpF3sA:7 a=QLxd5cu_Zb8A:10 a=VV2__AUApEoA:10 a=PEE7NJ57qVx5Pofn:21 a=4q62lxAKn155DsLb:21 a=DCwX0kaxZCiV3mmbfDr8nQ==:117 X-Cloudmark-Score: 0 X-Originating-IP: 67.79.195.91 Received: from [67.79.195.91] ([67.79.195.91:37004] helo=[10.0.2.91]) by cdptpa-bc-oedge01.mail.rr.com (envelope-from ) (ecelerity 2.2.3.46 r()) with ESMTPA id 57/2C-18213-A673E0E4; Fri, 01 Jul 2011 21:08:58 +0000 Message-Id: <20110701132202.680174091@systemfabricworks.com> References: <20110701131821.928693424@systemfabricworks.com> User-Agent: quilt/0.46-1 Date: Fri, 01 Jul 2011 08:19:02 -0500 From: rpearson@systemfabricworks.com To: linux-rdma@vger.kernel.org Cc: Bob Pearson Subject: [patch 41/44] rxe_net_sysfs.c Content-Disposition: inline; filename=patch41 Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org sysfs interface for ib_rxe_net. Signed-off-by: Bob Pearson --- drivers/infiniband/hw/rxe/rxe_net_sysfs.c | 220 ++++++++++++++++++++++++++++++ 1 file changed, 220 insertions(+) Index: infiniband/drivers/infiniband/hw/rxe/rxe_net_sysfs.c =================================================================== --- /dev/null +++ infiniband/drivers/infiniband/hw/rxe/rxe_net_sysfs.c @@ -0,0 +1,220 @@ +/* + * Copyright (c) 2009-2011 Mellanox Technologies Ltd. All rights reserved. + * Copyright (c) 2009-2011 System Fabric Works, Inc. All rights reserved. + * + * This software is available to you under a choice of one of two + * licenses. You may choose to be licensed under the terms of the GNU + * General Public License (GPL) Version 2, available from the file + * COPYING in the main directory of this source tree, or the + * OpenIB.org BSD license below: + * + * Redistribution and use in source and binary forms, with or + * without modification, are permitted provided that the following + * conditions are met: + * + * - Redistributions of source code must retain the above + * copyright notice, this list of conditions and the following + * disclaimer. + * + * - Redistributions in binary form must reproduce the above + * copyright notice, this list of conditions and the following + * disclaimer in the documentation and/or other materials + * provided with the distribution. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN + * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN + * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE + * SOFTWARE. + */ + +#include "rxe.h" +#include "rxe_net.h" + +/* Copy argument and remove trailing CR. Return the new length. */ +static int sanitize_arg(const char *val, char *intf, int intf_len) +{ + int len; + + if (!val) + return 0; + + /* Remove newline. */ + for (len = 0; len < intf_len - 1 && val[len] && val[len] != '\n'; len++) + intf[len] = val[len]; + intf[len] = 0; + + if (len == 0 || (val[len] != 0 && val[len] != '\n')) + return 0; + + return len; +} + +/* Caller must hold net_info_lock */ +static void rxe_set_port_state(struct net_device *ndev) +{ + struct rxe_dev *rxe; + + if (ndev->ifindex >= RXE_MAX_IF_INDEX) + goto out; + + rxe = net_to_rxe(ndev); + if (!rxe) + goto out; + + if (net_info[ndev->ifindex].status == IB_PORT_ACTIVE) + rxe_net_up(ndev); + else + rxe_net_down(ndev); /* down for unknown state */ +out: + return; +} + +static int rxe_param_set_add(const char *val, struct kernel_param *kp) +{ + int i, len; + char intf[32]; + + len = sanitize_arg(val, intf, sizeof(intf)); + if (!len) { + pr_err("rxe_net: add: invalid interface name\n"); + return -EINVAL; + } + + spin_lock_bh(&net_info_lock); + for (i = 0; i < RXE_MAX_IF_INDEX; i++) { + struct net_device *ndev = net_info[i].ndev; + + if (ndev && (0 == strncmp(intf, ndev->name, len))) { + spin_unlock_bh(&net_info_lock); + if (net_info[i].rxe) + pr_info("rxe_net: already configured on %s\n", + intf); + else { + rxe_net_add(ndev); + if (net_info[i].rxe) { + rxe_set_port_state(ndev); + } else + pr_err("rxe_net: add appears to have " + "failed for %s (index %d)\n", + intf, i); + } + return 0; + } + } + spin_unlock_bh(&net_info_lock); + + pr_warning("interface %s not found\n", intf); + + return 0; +} + +static void rxe_remove_all(void) +{ + int i; + + spin_lock_bh(&net_info_lock); + for (i = 0; i < RXE_MAX_IF_INDEX; i++) { + if (net_info[i].rxe) + rxe_net_remove(i); + } + spin_unlock_bh(&net_info_lock); +} + +static int rxe_param_set_remove(const char *val, struct kernel_param *kp) +{ + int i, len; + char intf[32]; + + len = sanitize_arg(val, intf, sizeof(intf)); + if (!len) { + pr_err("rxe_net: remove: invalid interface name\n"); + return -EINVAL; + } + + if (strncmp("all", intf, len) == 0) { + pr_info("rxe_sys: remove all"); + rxe_remove_all(); + return 0; + } + + spin_lock_bh(&net_info_lock); + for (i = 0; i < RXE_MAX_IF_INDEX; i++) { + if (!net_info[i].rxe || !net_info[i].ndev) + continue; + + if (0 == strncmp(intf, net_info[i].rxe->ib_dev.name, len)) { + rxe_net_remove(i); + spin_unlock_bh(&net_info_lock); + return 0; + } + } + spin_unlock_bh(&net_info_lock); + pr_warning("rxe_sys: instance %s not found\n", intf); + + return 0; +} + +module_param_call(add, rxe_param_set_add, NULL, NULL, 0200); +module_param_call(remove, rxe_param_set_remove, NULL, NULL, 0200); + +static int rxe_param_set_mtu(const char *val, struct kernel_param *kp) +{ + int i, rc, len; + int do_all = 0; + char intf[32]; + char cmd[32]; + int tmp_mtu; + + len = sanitize_arg(val, intf, sizeof(intf)); + if (!len) + return -EINVAL; + + rc = sscanf(intf, "%s %d", cmd, &tmp_mtu); + if (rc != 2) { + pr_warning("rxe_net: mtu bogus input (%s)\n", intf); + goto out; + } + + pr_info("set_mtu: %s %d\n", cmd, tmp_mtu); + + if (!(is_power_of_2(tmp_mtu) + && (tmp_mtu >= 256) + && (tmp_mtu <= 4096))) { + pr_warning("rxe_net: bogus mtu (%s - %d pow2 %d)\n", + intf, tmp_mtu, is_power_of_2(tmp_mtu)); + goto out; + } + + tmp_mtu = rxe_mtu_int_to_enum(tmp_mtu); + + if (strcmp("all", cmd) == 0) + do_all = 1; + + spin_lock_bh(&net_info_lock); + for (i = 0; i < RXE_MAX_IF_INDEX; i++) { + if (net_info[i].rxe && net_info[i].ndev) { + if (do_all + || (0 == strncmp(cmd, + net_info[i].rxe->ib_dev.name, + len))) { + net_info[i].rxe->pref_mtu = tmp_mtu; + + rxe_set_mtu(net_info[i].rxe, + net_info[i].ndev->mtu, 1); + + if (!do_all) + break; + } + } + } + spin_unlock_bh(&net_info_lock); + +out: + return 0; +} + +module_param_call(mtu, rxe_param_set_mtu, NULL, NULL, 0200);