From patchwork Sat Nov 4 11:13:45 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 13445486 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3CBB5C4332F for ; Sat, 4 Nov 2023 11:14:19 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231892AbjKDLOU (ORCPT ); Sat, 4 Nov 2023 07:14:20 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42942 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231913AbjKDLOT (ORCPT ); Sat, 4 Nov 2023 07:14:19 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 190B7D42 for ; Sat, 4 Nov 2023 04:14:16 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5F946C433C7; Sat, 4 Nov 2023 11:14:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1699096455; bh=capCfYD2XiW1Wu517kGoXSoHMKO5+OzR6iG0rl38P24=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=jbCVm4H6ejjulB8+g1+uqe0JgAbeUHdvMqGHK8jqCunxCdAb6kLAlQYYsGqEK0hw1 yQLaqIbyMLyKSXV7xZXoJqHCtnYNN8boOEX/DbDRWum/AwWAKhg56B5g8cNW94WvFe SRzlbChAV9TSypR/xNQglXiDkptDI0RJQhDYJRIAWYydZ20O6bUWNw/uzFY7JygGOX PfZNJrw66+oc8QyuMmJ2UzwwuL3UeGprz1zDSPjyOOgV8ESNCT8n72febFePL/t8vx du28ucltvG1uXfzxPd1+v0Jw8RsC+0ykEkn0fXTKh0ureGhykmiCy59KOFi4RyiwEn GDOZ1m94s3JbA== From: Lorenzo Bianconi To: linux-nfs@vger.kernel.org Cc: lorenzo.bianconi@redhat.com, neilb@suse.de, chuck.lever@oracle.com, netdev@vger.kernel.org, jlayton@kernel.org, kuba@kernel.org Subject: [PATCH v4 1/3] NFSD: convert write_threads to netlink command Date: Sat, 4 Nov 2023 12:13:45 +0100 Message-ID: X-Mailer: git-send-email 2.41.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Introduce write_threads netlink command similar to the ones available through the procfs. Signed-off-by: Lorenzo Bianconi --- Documentation/netlink/specs/nfsd.yaml | 23 +++++++ fs/nfsd/netlink.c | 17 +++++ fs/nfsd/netlink.h | 2 + fs/nfsd/nfsctl.c | 58 +++++++++++++++++ include/uapi/linux/nfsd_netlink.h | 9 +++ tools/net/ynl/generated/nfsd-user.c | 92 +++++++++++++++++++++++++++ tools/net/ynl/generated/nfsd-user.h | 47 ++++++++++++++ 7 files changed, 248 insertions(+) diff --git a/Documentation/netlink/specs/nfsd.yaml b/Documentation/netlink/specs/nfsd.yaml index 05acc73e2e33..c92e1425d316 100644 --- a/Documentation/netlink/specs/nfsd.yaml +++ b/Documentation/netlink/specs/nfsd.yaml @@ -62,6 +62,12 @@ attribute-sets: name: compound-ops type: u32 multi-attr: true + - + name: server-worker + attributes: + - + name: threads + type: u32 operations: list: @@ -87,3 +93,20 @@ operations: - sport - dport - compound-ops + - + name: threads-set + doc: set the number of running threads + attribute-set: server-worker + flags: [ admin-perm ] + do: + request: + attributes: + - threads + - + name: threads-get + doc: get the number of running threads + attribute-set: server-worker + do: + reply: + attributes: + - threads diff --git a/fs/nfsd/netlink.c b/fs/nfsd/netlink.c index 0e1d635ec5f9..1a59a8e6c7e2 100644 --- a/fs/nfsd/netlink.c +++ b/fs/nfsd/netlink.c @@ -10,6 +10,11 @@ #include +/* NFSD_CMD_THREADS_SET - do */ +static const struct nla_policy nfsd_threads_set_nl_policy[NFSD_A_SERVER_WORKER_THREADS + 1] = { + [NFSD_A_SERVER_WORKER_THREADS] = { .type = NLA_U32, }, +}; + /* Ops table for nfsd */ static const struct genl_split_ops nfsd_nl_ops[] = { { @@ -19,6 +24,18 @@ static const struct genl_split_ops nfsd_nl_ops[] = { .done = nfsd_nl_rpc_status_get_done, .flags = GENL_CMD_CAP_DUMP, }, + { + .cmd = NFSD_CMD_THREADS_SET, + .doit = nfsd_nl_threads_set_doit, + .policy = nfsd_threads_set_nl_policy, + .maxattr = NFSD_A_SERVER_WORKER_THREADS, + .flags = GENL_ADMIN_PERM | GENL_CMD_CAP_DO, + }, + { + .cmd = NFSD_CMD_THREADS_GET, + .doit = nfsd_nl_threads_get_doit, + .flags = GENL_CMD_CAP_DO, + }, }; struct genl_family nfsd_nl_family __ro_after_init = { diff --git a/fs/nfsd/netlink.h b/fs/nfsd/netlink.h index d83dd6bdee92..4137fac477e4 100644 --- a/fs/nfsd/netlink.h +++ b/fs/nfsd/netlink.h @@ -16,6 +16,8 @@ int nfsd_nl_rpc_status_get_done(struct netlink_callback *cb); int nfsd_nl_rpc_status_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb); +int nfsd_nl_threads_set_doit(struct sk_buff *skb, struct genl_info *info); +int nfsd_nl_threads_get_doit(struct sk_buff *skb, struct genl_info *info); extern struct genl_family nfsd_nl_family; diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 739ed5bf71cd..0d0394887506 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -1693,6 +1693,64 @@ int nfsd_nl_rpc_status_get_done(struct netlink_callback *cb) return 0; } +/** + * nfsd_nl_threads_set_doit - set the number of running threads + * @skb: reply buffer + * @info: netlink metadata and command arguments + * + * Return 0 on success or a negative errno. + */ +int nfsd_nl_threads_set_doit(struct sk_buff *skb, struct genl_info *info) +{ + u32 nthreads; + int ret; + + if (GENL_REQ_ATTR_CHECK(info, NFSD_A_SERVER_WORKER_THREADS)) + return -EINVAL; + + nthreads = nla_get_u32(info->attrs[NFSD_A_SERVER_WORKER_THREADS]); + ret = nfsd_svc(nthreads, genl_info_net(info), get_current_cred()); + + return ret == nthreads ? 0 : ret; +} + +/** + * nfsd_nl_threads_get_doit - get the number of running threads + * @skb: reply buffer + * @info: netlink metadata and command arguments + * + * Return 0 on success or a negative errno. + */ +int nfsd_nl_threads_get_doit(struct sk_buff *skb, struct genl_info *info) +{ + void *hdr; + int err; + + skb = genlmsg_new(GENLMSG_DEFAULT_SIZE, GFP_KERNEL); + if (!skb) + return -ENOMEM; + + hdr = genlmsg_iput(skb, info); + if (!hdr) { + err = -EMSGSIZE; + goto err_free_msg; + } + + if (nla_put_u32(skb, NFSD_A_SERVER_WORKER_THREADS, + nfsd_nrthreads(genl_info_net(info)))) { + err = -EINVAL; + goto err_free_msg; + } + + genlmsg_end(skb, hdr); + + return genlmsg_reply(skb, info); + +err_free_msg: + nlmsg_free(skb); + return err; +} + /** * nfsd_net_init - Prepare the nfsd_net portion of a new net namespace * @net: a freshly-created network namespace diff --git a/include/uapi/linux/nfsd_netlink.h b/include/uapi/linux/nfsd_netlink.h index c8ae72466ee6..99f7855852a1 100644 --- a/include/uapi/linux/nfsd_netlink.h +++ b/include/uapi/linux/nfsd_netlink.h @@ -29,8 +29,17 @@ enum { NFSD_A_RPC_STATUS_MAX = (__NFSD_A_RPC_STATUS_MAX - 1) }; +enum { + NFSD_A_SERVER_WORKER_THREADS = 1, + + __NFSD_A_SERVER_WORKER_MAX, + NFSD_A_SERVER_WORKER_MAX = (__NFSD_A_SERVER_WORKER_MAX - 1) +}; + enum { NFSD_CMD_RPC_STATUS_GET = 1, + NFSD_CMD_THREADS_SET, + NFSD_CMD_THREADS_GET, __NFSD_CMD_MAX, NFSD_CMD_MAX = (__NFSD_CMD_MAX - 1) diff --git a/tools/net/ynl/generated/nfsd-user.c b/tools/net/ynl/generated/nfsd-user.c index fec6828680ce..342a00b0474a 100644 --- a/tools/net/ynl/generated/nfsd-user.c +++ b/tools/net/ynl/generated/nfsd-user.c @@ -15,6 +15,8 @@ /* Enums */ static const char * const nfsd_op_strmap[] = { [NFSD_CMD_RPC_STATUS_GET] = "rpc-status-get", + [NFSD_CMD_THREADS_SET] = "threads-set", + [NFSD_CMD_THREADS_GET] = "threads-get", }; const char *nfsd_op_str(int op) @@ -47,6 +49,15 @@ struct ynl_policy_nest nfsd_rpc_status_nest = { .table = nfsd_rpc_status_policy, }; +struct ynl_policy_attr nfsd_server_worker_policy[NFSD_A_SERVER_WORKER_MAX + 1] = { + [NFSD_A_SERVER_WORKER_THREADS] = { .name = "threads", .type = YNL_PT_U32, }, +}; + +struct ynl_policy_nest nfsd_server_worker_nest = { + .max_attr = NFSD_A_SERVER_WORKER_MAX, + .table = nfsd_server_worker_policy, +}; + /* Common nested types */ /* ============== NFSD_CMD_RPC_STATUS_GET ============== */ /* NFSD_CMD_RPC_STATUS_GET - dump */ @@ -90,6 +101,87 @@ struct nfsd_rpc_status_get_list *nfsd_rpc_status_get_dump(struct ynl_sock *ys) return NULL; } +/* ============== NFSD_CMD_THREADS_SET ============== */ +/* NFSD_CMD_THREADS_SET - do */ +void nfsd_threads_set_req_free(struct nfsd_threads_set_req *req) +{ + free(req); +} + +int nfsd_threads_set(struct ynl_sock *ys, struct nfsd_threads_set_req *req) +{ + struct nlmsghdr *nlh; + int err; + + nlh = ynl_gemsg_start_req(ys, ys->family_id, NFSD_CMD_THREADS_SET, 1); + ys->req_policy = &nfsd_server_worker_nest; + + if (req->_present.threads) + mnl_attr_put_u32(nlh, NFSD_A_SERVER_WORKER_THREADS, req->threads); + + err = ynl_exec(ys, nlh, NULL); + if (err < 0) + return -1; + + return 0; +} + +/* ============== NFSD_CMD_THREADS_GET ============== */ +/* NFSD_CMD_THREADS_GET - do */ +void nfsd_threads_get_rsp_free(struct nfsd_threads_get_rsp *rsp) +{ + free(rsp); +} + +int nfsd_threads_get_rsp_parse(const struct nlmsghdr *nlh, void *data) +{ + struct ynl_parse_arg *yarg = data; + struct nfsd_threads_get_rsp *dst; + const struct nlattr *attr; + + dst = yarg->data; + + mnl_attr_for_each(attr, nlh, sizeof(struct genlmsghdr)) { + unsigned int type = mnl_attr_get_type(attr); + + if (type == NFSD_A_SERVER_WORKER_THREADS) { + if (ynl_attr_validate(yarg, attr)) + return MNL_CB_ERROR; + dst->_present.threads = 1; + dst->threads = mnl_attr_get_u32(attr); + } + } + + return MNL_CB_OK; +} + +struct nfsd_threads_get_rsp *nfsd_threads_get(struct ynl_sock *ys) +{ + struct ynl_req_state yrs = { .yarg = { .ys = ys, }, }; + struct nfsd_threads_get_rsp *rsp; + struct nlmsghdr *nlh; + int err; + + nlh = ynl_gemsg_start_req(ys, ys->family_id, NFSD_CMD_THREADS_GET, 1); + ys->req_policy = &nfsd_server_worker_nest; + yrs.yarg.rsp_policy = &nfsd_server_worker_nest; + + rsp = calloc(1, sizeof(*rsp)); + yrs.yarg.data = rsp; + yrs.cb = nfsd_threads_get_rsp_parse; + yrs.rsp_cmd = NFSD_CMD_THREADS_GET; + + err = ynl_exec(ys, nlh, &yrs); + if (err < 0) + goto err_free; + + return rsp; + +err_free: + nfsd_threads_get_rsp_free(rsp); + return NULL; +} + const struct ynl_family ynl_nfsd_family = { .name = "nfsd", }; diff --git a/tools/net/ynl/generated/nfsd-user.h b/tools/net/ynl/generated/nfsd-user.h index b6b69501031a..4c11119217f1 100644 --- a/tools/net/ynl/generated/nfsd-user.h +++ b/tools/net/ynl/generated/nfsd-user.h @@ -30,4 +30,51 @@ void nfsd_rpc_status_get_list_free(struct nfsd_rpc_status_get_list *rsp); struct nfsd_rpc_status_get_list *nfsd_rpc_status_get_dump(struct ynl_sock *ys); +/* ============== NFSD_CMD_THREADS_SET ============== */ +/* NFSD_CMD_THREADS_SET - do */ +struct nfsd_threads_set_req { + struct { + __u32 threads:1; + } _present; + + __u32 threads; +}; + +static inline struct nfsd_threads_set_req *nfsd_threads_set_req_alloc(void) +{ + return calloc(1, sizeof(struct nfsd_threads_set_req)); +} +void nfsd_threads_set_req_free(struct nfsd_threads_set_req *req); + +static inline void +nfsd_threads_set_req_set_threads(struct nfsd_threads_set_req *req, + __u32 threads) +{ + req->_present.threads = 1; + req->threads = threads; +} + +/* + * set the number of running threads + */ +int nfsd_threads_set(struct ynl_sock *ys, struct nfsd_threads_set_req *req); + +/* ============== NFSD_CMD_THREADS_GET ============== */ +/* NFSD_CMD_THREADS_GET - do */ + +struct nfsd_threads_get_rsp { + struct { + __u32 threads:1; + } _present; + + __u32 threads; +}; + +void nfsd_threads_get_rsp_free(struct nfsd_threads_get_rsp *rsp); + +/* + * get the number of running threads + */ +struct nfsd_threads_get_rsp *nfsd_threads_get(struct ynl_sock *ys); + #endif /* _LINUX_NFSD_GEN_H */ From patchwork Sat Nov 4 11:13:46 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 13445487 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 31048C4332F for ; Sat, 4 Nov 2023 11:14:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231945AbjKDLOY (ORCPT ); Sat, 4 Nov 2023 07:14:24 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42962 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231913AbjKDLOX (ORCPT ); Sat, 4 Nov 2023 07:14:23 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CADD91BF for ; Sat, 4 Nov 2023 04:14:19 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1AC11C433C7; Sat, 4 Nov 2023 11:14:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1699096459; bh=pKoovObKbzE/H27RYJgEwN6tg28uYNoL8HegIv0A/2Q=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=eEytuiZLCMIn8VTG/JzPEuC776EOPXZvn7yzRSGO9zinTiK3+SYp09ttr8pkgwZJs TvmVAQa+NxjjVM6t2SHCfBWx91br3UjGZ8X2jDqft9kteUxmfH6R1cXVOXONYxiPqm Ku2wMQVC9lBZOsmUHNullg4Se0bj05VkpbKG72mfKcwzOcjmVZ/2qBPj76AXUUxQwA YAG5vBaHKAh2POx4lZBSmVbXM7w6vslkVNG7z87TpQSub3mLFS7mFIGyDlBV8Brbi9 0LOPihXqxgRSzz6RLj+kW/AbS8yeJ2NKqdqPTeQGB4voGr/iiiOR7xvynqf9eUsI0D TOh0mw53+6C4g== From: Lorenzo Bianconi To: linux-nfs@vger.kernel.org Cc: lorenzo.bianconi@redhat.com, neilb@suse.de, chuck.lever@oracle.com, netdev@vger.kernel.org, jlayton@kernel.org, kuba@kernel.org Subject: [PATCH v4 2/3] NFSD: convert write_version to netlink command Date: Sat, 4 Nov 2023 12:13:46 +0100 Message-ID: <3785da26e14c13e194510eaad9c6bd846d691d5f.1699095665.git.lorenzo@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Introduce write_version netlink command similar to the ones available through the procfs. Signed-off-by: Lorenzo Bianconi --- Documentation/netlink/specs/nfsd.yaml | 32 ++++++++ fs/nfsd/netlink.c | 19 +++++ fs/nfsd/netlink.h | 3 + fs/nfsd/nfsctl.c | 105 ++++++++++++++++++++++++++ include/uapi/linux/nfsd_netlink.h | 11 +++ tools/net/ynl/generated/nfsd-user.c | 81 ++++++++++++++++++++ tools/net/ynl/generated/nfsd-user.h | 55 ++++++++++++++ 7 files changed, 306 insertions(+) diff --git a/Documentation/netlink/specs/nfsd.yaml b/Documentation/netlink/specs/nfsd.yaml index c92e1425d316..6c5e42bb20f6 100644 --- a/Documentation/netlink/specs/nfsd.yaml +++ b/Documentation/netlink/specs/nfsd.yaml @@ -68,6 +68,18 @@ attribute-sets: - name: threads type: u32 + - + name: server-version + attributes: + - + name: major + type: u32 + - + name: minor + type: u32 + - + name: status + type: u8 operations: list: @@ -110,3 +122,23 @@ operations: reply: attributes: - threads + - + name: version-set + doc: enable/disable server version + attribute-set: server-version + flags: [ admin-perm ] + do: + request: + attributes: + - major + - minor + - status + - + name: version-get + doc: dump server versions + attribute-set: server-version + dump: + reply: + attributes: + - major + - minor diff --git a/fs/nfsd/netlink.c b/fs/nfsd/netlink.c index 1a59a8e6c7e2..0608a7bd193b 100644 --- a/fs/nfsd/netlink.c +++ b/fs/nfsd/netlink.c @@ -15,6 +15,13 @@ static const struct nla_policy nfsd_threads_set_nl_policy[NFSD_A_SERVER_WORKER_T [NFSD_A_SERVER_WORKER_THREADS] = { .type = NLA_U32, }, }; +/* NFSD_CMD_VERSION_SET - do */ +static const struct nla_policy nfsd_version_set_nl_policy[NFSD_A_SERVER_VERSION_STATUS + 1] = { + [NFSD_A_SERVER_VERSION_MAJOR] = { .type = NLA_U32, }, + [NFSD_A_SERVER_VERSION_MINOR] = { .type = NLA_U32, }, + [NFSD_A_SERVER_VERSION_STATUS] = { .type = NLA_U8, }, +}; + /* Ops table for nfsd */ static const struct genl_split_ops nfsd_nl_ops[] = { { @@ -36,6 +43,18 @@ static const struct genl_split_ops nfsd_nl_ops[] = { .doit = nfsd_nl_threads_get_doit, .flags = GENL_CMD_CAP_DO, }, + { + .cmd = NFSD_CMD_VERSION_SET, + .doit = nfsd_nl_version_set_doit, + .policy = nfsd_version_set_nl_policy, + .maxattr = NFSD_A_SERVER_VERSION_STATUS, + .flags = GENL_ADMIN_PERM | GENL_CMD_CAP_DO, + }, + { + .cmd = NFSD_CMD_VERSION_GET, + .dumpit = nfsd_nl_version_get_dumpit, + .flags = GENL_CMD_CAP_DUMP, + }, }; struct genl_family nfsd_nl_family __ro_after_init = { diff --git a/fs/nfsd/netlink.h b/fs/nfsd/netlink.h index 4137fac477e4..7d203cec08e4 100644 --- a/fs/nfsd/netlink.h +++ b/fs/nfsd/netlink.h @@ -18,6 +18,9 @@ int nfsd_nl_rpc_status_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb); int nfsd_nl_threads_set_doit(struct sk_buff *skb, struct genl_info *info); int nfsd_nl_threads_get_doit(struct sk_buff *skb, struct genl_info *info); +int nfsd_nl_version_set_doit(struct sk_buff *skb, struct genl_info *info); +int nfsd_nl_version_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); extern struct genl_family nfsd_nl_family; diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 0d0394887506..5cf6238617d9 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -1751,6 +1751,111 @@ int nfsd_nl_threads_get_doit(struct sk_buff *skb, struct genl_info *info) return err; } +/** + * nfsd_nl_version_set_doit - enable/disable the provided nfs server version + * @skb: reply buffer + * @info: netlink metadata and command arguments + * + * Return 0 on success or a negative errno. + */ +int nfsd_nl_version_set_doit(struct sk_buff *skb, struct genl_info *info) +{ + struct nfsd_net *nn = net_generic(genl_info_net(info), nfsd_net_id); + enum vers_op cmd; + u32 major, minor; + u8 status; + int ret; + + if (GENL_REQ_ATTR_CHECK(info, NFSD_A_SERVER_VERSION_MAJOR) || + GENL_REQ_ATTR_CHECK(info, NFSD_A_SERVER_VERSION_MINOR) || + GENL_REQ_ATTR_CHECK(info, NFSD_A_SERVER_VERSION_STATUS)) + return -EINVAL; + + major = nla_get_u32(info->attrs[NFSD_A_SERVER_VERSION_MAJOR]); + minor = nla_get_u32(info->attrs[NFSD_A_SERVER_VERSION_MINOR]); + + status = nla_get_u32(info->attrs[NFSD_A_SERVER_VERSION_STATUS]); + cmd = !!status ? NFSD_SET : NFSD_CLEAR; + + mutex_lock(&nfsd_mutex); + switch (major) { + case 4: + ret = nfsd_minorversion(nn, minor, cmd); + break; + case 2: + case 3: + if (!minor) { + ret = nfsd_vers(nn, major, cmd); + break; + } + fallthrough; + default: + ret = -EINVAL; + break; + } + mutex_unlock(&nfsd_mutex); + + return ret; +} + +/** + * nfsd_nl_version_get_doit - Handle verion_get dumpit + * @skb: reply buffer + * @cb: netlink metadata and command arguments + * + * Returns the size of the reply or a negative errno. + */ +int nfsd_nl_version_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb) +{ + struct nfsd_net *nn = net_generic(sock_net(skb->sk), nfsd_net_id); + int i, ret = -ENOMEM; + + mutex_lock(&nfsd_mutex); + + for (i = 2; i <= 4; i++) { + int j; + + if (i < cb->args[0]) /* already consumed */ + continue; + + if (!nfsd_vers(nn, i, NFSD_AVAIL)) + continue; + + for (j = 0; j <= NFSD_SUPPORTED_MINOR_VERSION; j++) { + void *hdr; + + if (!nfsd_vers(nn, i, NFSD_TEST)) + continue; + + /* NFSv{2,3} does not support minor numbers */ + if (i < 4 && j) + continue; + + if (i == 4 && !nfsd_minorversion(nn, j, NFSD_TEST)) + continue; + + hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, + cb->nlh->nlmsg_seq, &nfsd_nl_family, + 0, NFSD_CMD_VERSION_GET); + if (!hdr) + goto out; + + if (nla_put_u32(skb, NFSD_A_SERVER_VERSION_MAJOR, i) || + nla_put_u32(skb, NFSD_A_SERVER_VERSION_MINOR, j)) + goto out; + + genlmsg_end(skb, hdr); + } + } + cb->args[0] = i; + ret = skb->len; +out: + mutex_unlock(&nfsd_mutex); + + return ret; +} + /** * nfsd_net_init - Prepare the nfsd_net portion of a new net namespace * @net: a freshly-created network namespace diff --git a/include/uapi/linux/nfsd_netlink.h b/include/uapi/linux/nfsd_netlink.h index 99f7855852a1..51f078b26af4 100644 --- a/include/uapi/linux/nfsd_netlink.h +++ b/include/uapi/linux/nfsd_netlink.h @@ -36,10 +36,21 @@ enum { NFSD_A_SERVER_WORKER_MAX = (__NFSD_A_SERVER_WORKER_MAX - 1) }; +enum { + NFSD_A_SERVER_VERSION_MAJOR = 1, + NFSD_A_SERVER_VERSION_MINOR, + NFSD_A_SERVER_VERSION_STATUS, + + __NFSD_A_SERVER_VERSION_MAX, + NFSD_A_SERVER_VERSION_MAX = (__NFSD_A_SERVER_VERSION_MAX - 1) +}; + enum { NFSD_CMD_RPC_STATUS_GET = 1, NFSD_CMD_THREADS_SET, NFSD_CMD_THREADS_GET, + NFSD_CMD_VERSION_SET, + NFSD_CMD_VERSION_GET, __NFSD_CMD_MAX, NFSD_CMD_MAX = (__NFSD_CMD_MAX - 1) diff --git a/tools/net/ynl/generated/nfsd-user.c b/tools/net/ynl/generated/nfsd-user.c index 342a00b0474a..dceaccbdfb69 100644 --- a/tools/net/ynl/generated/nfsd-user.c +++ b/tools/net/ynl/generated/nfsd-user.c @@ -17,6 +17,8 @@ static const char * const nfsd_op_strmap[] = { [NFSD_CMD_RPC_STATUS_GET] = "rpc-status-get", [NFSD_CMD_THREADS_SET] = "threads-set", [NFSD_CMD_THREADS_GET] = "threads-get", + [NFSD_CMD_VERSION_SET] = "version-set", + [NFSD_CMD_VERSION_GET] = "version-get", }; const char *nfsd_op_str(int op) @@ -58,6 +60,17 @@ struct ynl_policy_nest nfsd_server_worker_nest = { .table = nfsd_server_worker_policy, }; +struct ynl_policy_attr nfsd_server_version_policy[NFSD_A_SERVER_VERSION_MAX + 1] = { + [NFSD_A_SERVER_VERSION_MAJOR] = { .name = "major", .type = YNL_PT_U32, }, + [NFSD_A_SERVER_VERSION_MINOR] = { .name = "minor", .type = YNL_PT_U32, }, + [NFSD_A_SERVER_VERSION_STATUS] = { .name = "status", .type = YNL_PT_U8, }, +}; + +struct ynl_policy_nest nfsd_server_version_nest = { + .max_attr = NFSD_A_SERVER_VERSION_MAX, + .table = nfsd_server_version_policy, +}; + /* Common nested types */ /* ============== NFSD_CMD_RPC_STATUS_GET ============== */ /* NFSD_CMD_RPC_STATUS_GET - dump */ @@ -182,6 +195,74 @@ struct nfsd_threads_get_rsp *nfsd_threads_get(struct ynl_sock *ys) return NULL; } +/* ============== NFSD_CMD_VERSION_SET ============== */ +/* NFSD_CMD_VERSION_SET - do */ +void nfsd_version_set_req_free(struct nfsd_version_set_req *req) +{ + free(req); +} + +int nfsd_version_set(struct ynl_sock *ys, struct nfsd_version_set_req *req) +{ + struct nlmsghdr *nlh; + int err; + + nlh = ynl_gemsg_start_req(ys, ys->family_id, NFSD_CMD_VERSION_SET, 1); + ys->req_policy = &nfsd_server_version_nest; + + if (req->_present.major) + mnl_attr_put_u32(nlh, NFSD_A_SERVER_VERSION_MAJOR, req->major); + if (req->_present.minor) + mnl_attr_put_u32(nlh, NFSD_A_SERVER_VERSION_MINOR, req->minor); + if (req->_present.status) + mnl_attr_put_u8(nlh, NFSD_A_SERVER_VERSION_STATUS, req->status); + + err = ynl_exec(ys, nlh, NULL); + if (err < 0) + return -1; + + return 0; +} + +/* ============== NFSD_CMD_VERSION_GET ============== */ +/* NFSD_CMD_VERSION_GET - dump */ +void nfsd_version_get_list_free(struct nfsd_version_get_list *rsp) +{ + struct nfsd_version_get_list *next = rsp; + + while ((void *)next != YNL_LIST_END) { + rsp = next; + next = rsp->next; + + free(rsp); + } +} + +struct nfsd_version_get_list *nfsd_version_get_dump(struct ynl_sock *ys) +{ + struct ynl_dump_state yds = {}; + struct nlmsghdr *nlh; + int err; + + yds.ys = ys; + yds.alloc_sz = sizeof(struct nfsd_version_get_list); + yds.cb = nfsd_version_get_rsp_parse; + yds.rsp_cmd = NFSD_CMD_VERSION_GET; + yds.rsp_policy = &nfsd_server_version_nest; + + nlh = ynl_gemsg_start_dump(ys, ys->family_id, NFSD_CMD_VERSION_GET, 1); + + err = ynl_exec_dump(ys, nlh, &yds); + if (err < 0) + goto free_list; + + return yds.first; + +free_list: + nfsd_version_get_list_free(yds.first); + return NULL; +} + const struct ynl_family ynl_nfsd_family = { .name = "nfsd", }; diff --git a/tools/net/ynl/generated/nfsd-user.h b/tools/net/ynl/generated/nfsd-user.h index 4c11119217f1..2272cb25c364 100644 --- a/tools/net/ynl/generated/nfsd-user.h +++ b/tools/net/ynl/generated/nfsd-user.h @@ -77,4 +77,59 @@ void nfsd_threads_get_rsp_free(struct nfsd_threads_get_rsp *rsp); */ struct nfsd_threads_get_rsp *nfsd_threads_get(struct ynl_sock *ys); +/* ============== NFSD_CMD_VERSION_SET ============== */ +/* NFSD_CMD_VERSION_SET - do */ +struct nfsd_version_set_req { + struct { + __u32 major:1; + __u32 minor:1; + __u32 status:1; + } _present; + + __u32 major; + __u32 minor; + __u8 status; +}; + +static inline struct nfsd_version_set_req *nfsd_version_set_req_alloc(void) +{ + return calloc(1, sizeof(struct nfsd_version_set_req)); +} +void nfsd_version_set_req_free(struct nfsd_version_set_req *req); + +static inline void +nfsd_version_set_req_set_major(struct nfsd_version_set_req *req, __u32 major) +{ + req->_present.major = 1; + req->major = major; +} +static inline void +nfsd_version_set_req_set_minor(struct nfsd_version_set_req *req, __u32 minor) +{ + req->_present.minor = 1; + req->minor = minor; +} +static inline void +nfsd_version_set_req_set_status(struct nfsd_version_set_req *req, __u8 status) +{ + req->_present.status = 1; + req->status = status; +} + +/* + * enable/disable server version + */ +int nfsd_version_set(struct ynl_sock *ys, struct nfsd_version_set_req *req); + +/* ============== NFSD_CMD_VERSION_GET ============== */ +/* NFSD_CMD_VERSION_GET - dump */ +struct nfsd_version_get_list { + struct nfsd_version_get_list *next; + struct nfsd_version_get_rsp obj __attribute__ ((aligned (8))); +}; + +void nfsd_version_get_list_free(struct nfsd_version_get_list *rsp); + +struct nfsd_version_get_list *nfsd_version_get_dump(struct ynl_sock *ys); + #endif /* _LINUX_NFSD_GEN_H */ From patchwork Sat Nov 4 11:13:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lorenzo Bianconi X-Patchwork-Id: 13445488 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id B3FCEC4332F for ; Sat, 4 Nov 2023 11:14:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231946AbjKDLO1 (ORCPT ); Sat, 4 Nov 2023 07:14:27 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42964 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231913AbjKDLO0 (ORCPT ); Sat, 4 Nov 2023 07:14:26 -0400 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A445E1BD for ; Sat, 4 Nov 2023 04:14:23 -0700 (PDT) Received: by smtp.kernel.org (Postfix) with ESMTPSA id EB94AC433C8; Sat, 4 Nov 2023 11:14:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1699096463; bh=8QOwRw5NzPh2NmltfMjV5zZwIWR4GIWze3KPND0XmXQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SlPZPX9MvLqcIUq8n4j+NjGz+FHdgEYopkd18nVZsmffwPgkN3eq7NrpdVYZN/lBV 1LD0601xipejSwNfVdoUJhMuR09MwJbxMbnWlphMo82nOtfGNbWM/j6VQDc+yilN7q 4KPqD1BZKGp+KcKcie26c9v2tS7nEg5KaPqcV2HvnHwQTyyHQTFqpyn4CQfGl/clKt uKRx7m/2OzTQqqjXWvBgsyXes9x8LeIm5nQTW8PzMeWhjG1t83ADvMixW/PzlPqzi/ Fr3cuSSO8gZ1gpK5x6Vi9eTg3umyDWNDRtAmCTH/A7AroMRnqcM1gQpXesTi0RxYt/ C/xyszxlCbw1Q== From: Lorenzo Bianconi To: linux-nfs@vger.kernel.org Cc: lorenzo.bianconi@redhat.com, neilb@suse.de, chuck.lever@oracle.com, netdev@vger.kernel.org, jlayton@kernel.org, kuba@kernel.org Subject: [PATCH v4 3/3] NFSD: convert write_ports to netlink command Date: Sat, 4 Nov 2023 12:13:47 +0100 Message-ID: <153b94db12b5c8fff270706673afffad5d84938c.1699095665.git.lorenzo@kernel.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: References: MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-nfs@vger.kernel.org Introduce write_ports netlink command similar to the ones available through the procfs. Signed-off-by: Lorenzo Bianconi --- Documentation/netlink/specs/nfsd.yaml | 28 +++++++ fs/nfsd/netlink.c | 18 +++++ fs/nfsd/netlink.h | 3 + fs/nfsd/nfsctl.c | 104 ++++++++++++++++++++++++-- include/uapi/linux/nfsd_netlink.h | 10 +++ tools/net/ynl/generated/nfsd-user.c | 81 ++++++++++++++++++++ tools/net/ynl/generated/nfsd-user.h | 54 +++++++++++++ 7 files changed, 291 insertions(+), 7 deletions(-) diff --git a/Documentation/netlink/specs/nfsd.yaml b/Documentation/netlink/specs/nfsd.yaml index 6c5e42bb20f6..1c342ad3c5fa 100644 --- a/Documentation/netlink/specs/nfsd.yaml +++ b/Documentation/netlink/specs/nfsd.yaml @@ -80,6 +80,15 @@ attribute-sets: - name: status type: u8 + - + name: server-listener + attributes: + - + name: transport-name + type: string + - + name: port + type: u32 operations: list: @@ -142,3 +151,22 @@ operations: attributes: - major - minor + - + name: listener-start + doc: start server listener + attribute-set: server-listener + flags: [ admin-perm ] + do: + request: + attributes: + - transport-name + - port + - + name: listener-get + doc: dump server listeners + attribute-set: server-listener + dump: + reply: + attributes: + - transport-name + - port diff --git a/fs/nfsd/netlink.c b/fs/nfsd/netlink.c index 0608a7bd193b..cd51393ede72 100644 --- a/fs/nfsd/netlink.c +++ b/fs/nfsd/netlink.c @@ -22,6 +22,12 @@ static const struct nla_policy nfsd_version_set_nl_policy[NFSD_A_SERVER_VERSION_ [NFSD_A_SERVER_VERSION_STATUS] = { .type = NLA_U8, }, }; +/* NFSD_CMD_LISTENER_START - do */ +static const struct nla_policy nfsd_listener_start_nl_policy[NFSD_A_SERVER_LISTENER_PORT + 1] = { + [NFSD_A_SERVER_LISTENER_TRANSPORT_NAME] = { .type = NLA_NUL_STRING, }, + [NFSD_A_SERVER_LISTENER_PORT] = { .type = NLA_U32, }, +}; + /* Ops table for nfsd */ static const struct genl_split_ops nfsd_nl_ops[] = { { @@ -55,6 +61,18 @@ static const struct genl_split_ops nfsd_nl_ops[] = { .dumpit = nfsd_nl_version_get_dumpit, .flags = GENL_CMD_CAP_DUMP, }, + { + .cmd = NFSD_CMD_LISTENER_START, + .doit = nfsd_nl_listener_start_doit, + .policy = nfsd_listener_start_nl_policy, + .maxattr = NFSD_A_SERVER_LISTENER_PORT, + .flags = GENL_ADMIN_PERM | GENL_CMD_CAP_DO, + }, + { + .cmd = NFSD_CMD_LISTENER_GET, + .dumpit = nfsd_nl_listener_get_dumpit, + .flags = GENL_CMD_CAP_DUMP, + }, }; struct genl_family nfsd_nl_family __ro_after_init = { diff --git a/fs/nfsd/netlink.h b/fs/nfsd/netlink.h index 7d203cec08e4..9a51cb83f343 100644 --- a/fs/nfsd/netlink.h +++ b/fs/nfsd/netlink.h @@ -21,6 +21,9 @@ int nfsd_nl_threads_get_doit(struct sk_buff *skb, struct genl_info *info); int nfsd_nl_version_set_doit(struct sk_buff *skb, struct genl_info *info); int nfsd_nl_version_get_dumpit(struct sk_buff *skb, struct netlink_callback *cb); +int nfsd_nl_listener_start_doit(struct sk_buff *skb, struct genl_info *info); +int nfsd_nl_listener_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb); extern struct genl_family nfsd_nl_family; diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 5cf6238617d9..471021b92519 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -717,18 +717,16 @@ static ssize_t __write_ports_addfd(char *buf, struct net *net, const struct cred * A transport listener is added by writing its transport name and * a port number. */ -static ssize_t __write_ports_addxprt(char *buf, struct net *net, const struct cred *cred) +static ssize_t ___write_ports_addxprt(struct net *net, const struct cred *cred, + const char *transport, const int port) { - char transport[16]; - struct svc_xprt *xprt; - int port, err; struct nfsd_net *nn = net_generic(net, nfsd_net_id); - - if (sscanf(buf, "%15s %5u", transport, &port) != 2) - return -EINVAL; + struct svc_xprt *xprt; + int err; if (port < 1 || port > USHRT_MAX) return -EINVAL; + trace_nfsd_ctl_ports_addxprt(net, transport, port); err = nfsd_create_serv(net); @@ -761,6 +759,17 @@ static ssize_t __write_ports_addxprt(char *buf, struct net *net, const struct cr return err; } +static ssize_t __write_ports_addxprt(char *buf, struct net *net, const struct cred *cred) +{ + char transport[16]; + int port; + + if (sscanf(buf, "%15s %5u", transport, &port) != 2) + return -EINVAL; + + return ___write_ports_addxprt(net, cred, transport, port); +} + static ssize_t __write_ports(struct file *file, char *buf, size_t size, struct net *net) { @@ -1856,6 +1865,87 @@ int nfsd_nl_version_get_dumpit(struct sk_buff *skb, return ret; } +/** + * nfsd_nl_listener_start_doit - start the provided nfs server listener + * @skb: reply buffer + * @info: netlink metadata and command arguments + * + * Return 0 on success or a negative errno. + */ +int nfsd_nl_listener_start_doit(struct sk_buff *skb, struct genl_info *info) +{ + int ret; + + if (GENL_REQ_ATTR_CHECK(info, NFSD_A_SERVER_LISTENER_TRANSPORT_NAME) || + GENL_REQ_ATTR_CHECK(info, NFSD_A_SERVER_LISTENER_PORT)) + return -EINVAL; + + mutex_lock(&nfsd_mutex); + ret = ___write_ports_addxprt(genl_info_net(info), get_current_cred(), + nla_data(info->attrs[NFSD_A_SERVER_LISTENER_TRANSPORT_NAME]), + nla_get_u32(info->attrs[NFSD_A_SERVER_LISTENER_PORT])); + mutex_unlock(&nfsd_mutex); + + return 0; +} + +/** + * nfsd_nl_version_get_dumpit - Handle listener_get dumpit + * @skb: reply buffer + * @cb: netlink metadata and command arguments + * + * Returns the size of the reply or a negative errno. + */ +int nfsd_nl_listener_get_dumpit(struct sk_buff *skb, + struct netlink_callback *cb) +{ + struct nfsd_net *nn = net_generic(sock_net(skb->sk), nfsd_net_id); + int i = 0, ret = -ENOMEM; + struct svc_xprt *xprt; + struct svc_serv *serv; + + mutex_lock(&nfsd_mutex); + + serv = nn->nfsd_serv; + if (!serv) { + mutex_unlock(&nfsd_mutex); + return 0; + } + + spin_lock_bh(&serv->sv_lock); + list_for_each_entry(xprt, &serv->sv_permsocks, xpt_list) { + void *hdr; + + if (i < cb->args[0]) /* already consumed */ + continue; + + hdr = genlmsg_put(skb, NETLINK_CB(cb->skb).portid, + cb->nlh->nlmsg_seq, &nfsd_nl_family, + 0, NFSD_CMD_LISTENER_GET); + if (!hdr) + goto out; + + if (nla_put_string(skb, NFSD_A_SERVER_LISTENER_TRANSPORT_NAME, + xprt->xpt_class->xcl_name)) + goto out; + + if (nla_put_u32(skb, NFSD_A_SERVER_LISTENER_PORT, + svc_xprt_local_port(xprt))) + goto out; + + genlmsg_end(skb, hdr); + i++; + } + cb->args[0] = i; + ret = skb->len; +out: + spin_unlock_bh(&serv->sv_lock); + + mutex_unlock(&nfsd_mutex); + + return ret; +} + /** * nfsd_net_init - Prepare the nfsd_net portion of a new net namespace * @net: a freshly-created network namespace diff --git a/include/uapi/linux/nfsd_netlink.h b/include/uapi/linux/nfsd_netlink.h index 51f078b26af4..2690bab6cef2 100644 --- a/include/uapi/linux/nfsd_netlink.h +++ b/include/uapi/linux/nfsd_netlink.h @@ -45,12 +45,22 @@ enum { NFSD_A_SERVER_VERSION_MAX = (__NFSD_A_SERVER_VERSION_MAX - 1) }; +enum { + NFSD_A_SERVER_LISTENER_TRANSPORT_NAME = 1, + NFSD_A_SERVER_LISTENER_PORT, + + __NFSD_A_SERVER_LISTENER_MAX, + NFSD_A_SERVER_LISTENER_MAX = (__NFSD_A_SERVER_LISTENER_MAX - 1) +}; + enum { NFSD_CMD_RPC_STATUS_GET = 1, NFSD_CMD_THREADS_SET, NFSD_CMD_THREADS_GET, NFSD_CMD_VERSION_SET, NFSD_CMD_VERSION_GET, + NFSD_CMD_LISTENER_START, + NFSD_CMD_LISTENER_GET, __NFSD_CMD_MAX, NFSD_CMD_MAX = (__NFSD_CMD_MAX - 1) diff --git a/tools/net/ynl/generated/nfsd-user.c b/tools/net/ynl/generated/nfsd-user.c index dceaccbdfb69..8a7cef300b9b 100644 --- a/tools/net/ynl/generated/nfsd-user.c +++ b/tools/net/ynl/generated/nfsd-user.c @@ -19,6 +19,8 @@ static const char * const nfsd_op_strmap[] = { [NFSD_CMD_THREADS_GET] = "threads-get", [NFSD_CMD_VERSION_SET] = "version-set", [NFSD_CMD_VERSION_GET] = "version-get", + [NFSD_CMD_LISTENER_START] = "listener-start", + [NFSD_CMD_LISTENER_GET] = "listener-get", }; const char *nfsd_op_str(int op) @@ -71,6 +73,16 @@ struct ynl_policy_nest nfsd_server_version_nest = { .table = nfsd_server_version_policy, }; +struct ynl_policy_attr nfsd_server_listener_policy[NFSD_A_SERVER_LISTENER_MAX + 1] = { + [NFSD_A_SERVER_LISTENER_TRANSPORT_NAME] = { .name = "transport-name", .type = YNL_PT_NUL_STR, }, + [NFSD_A_SERVER_LISTENER_PORT] = { .name = "port", .type = YNL_PT_U32, }, +}; + +struct ynl_policy_nest nfsd_server_listener_nest = { + .max_attr = NFSD_A_SERVER_LISTENER_MAX, + .table = nfsd_server_listener_policy, +}; + /* Common nested types */ /* ============== NFSD_CMD_RPC_STATUS_GET ============== */ /* NFSD_CMD_RPC_STATUS_GET - dump */ @@ -263,6 +275,75 @@ struct nfsd_version_get_list *nfsd_version_get_dump(struct ynl_sock *ys) return NULL; } +/* ============== NFSD_CMD_LISTENER_START ============== */ +/* NFSD_CMD_LISTENER_START - do */ +void nfsd_listener_start_req_free(struct nfsd_listener_start_req *req) +{ + free(req->transport_name); + free(req); +} + +int nfsd_listener_start(struct ynl_sock *ys, + struct nfsd_listener_start_req *req) +{ + struct nlmsghdr *nlh; + int err; + + nlh = ynl_gemsg_start_req(ys, ys->family_id, NFSD_CMD_LISTENER_START, 1); + ys->req_policy = &nfsd_server_listener_nest; + + if (req->_present.transport_name_len) + mnl_attr_put_strz(nlh, NFSD_A_SERVER_LISTENER_TRANSPORT_NAME, req->transport_name); + if (req->_present.port) + mnl_attr_put_u32(nlh, NFSD_A_SERVER_LISTENER_PORT, req->port); + + err = ynl_exec(ys, nlh, NULL); + if (err < 0) + return -1; + + return 0; +} + +/* ============== NFSD_CMD_LISTENER_GET ============== */ +/* NFSD_CMD_LISTENER_GET - dump */ +void nfsd_listener_get_list_free(struct nfsd_listener_get_list *rsp) +{ + struct nfsd_listener_get_list *next = rsp; + + while ((void *)next != YNL_LIST_END) { + rsp = next; + next = rsp->next; + + free(rsp->obj.transport_name); + free(rsp); + } +} + +struct nfsd_listener_get_list *nfsd_listener_get_dump(struct ynl_sock *ys) +{ + struct ynl_dump_state yds = {}; + struct nlmsghdr *nlh; + int err; + + yds.ys = ys; + yds.alloc_sz = sizeof(struct nfsd_listener_get_list); + yds.cb = nfsd_listener_get_rsp_parse; + yds.rsp_cmd = NFSD_CMD_LISTENER_GET; + yds.rsp_policy = &nfsd_server_listener_nest; + + nlh = ynl_gemsg_start_dump(ys, ys->family_id, NFSD_CMD_LISTENER_GET, 1); + + err = ynl_exec_dump(ys, nlh, &yds); + if (err < 0) + goto free_list; + + return yds.first; + +free_list: + nfsd_listener_get_list_free(yds.first); + return NULL; +} + const struct ynl_family ynl_nfsd_family = { .name = "nfsd", }; diff --git a/tools/net/ynl/generated/nfsd-user.h b/tools/net/ynl/generated/nfsd-user.h index 2272cb25c364..c757387cd60d 100644 --- a/tools/net/ynl/generated/nfsd-user.h +++ b/tools/net/ynl/generated/nfsd-user.h @@ -132,4 +132,58 @@ void nfsd_version_get_list_free(struct nfsd_version_get_list *rsp); struct nfsd_version_get_list *nfsd_version_get_dump(struct ynl_sock *ys); +/* ============== NFSD_CMD_LISTENER_START ============== */ +/* NFSD_CMD_LISTENER_START - do */ +struct nfsd_listener_start_req { + struct { + __u32 transport_name_len; + __u32 port:1; + } _present; + + char *transport_name; + __u32 port; +}; + +static inline struct nfsd_listener_start_req * +nfsd_listener_start_req_alloc(void) +{ + return calloc(1, sizeof(struct nfsd_listener_start_req)); +} +void nfsd_listener_start_req_free(struct nfsd_listener_start_req *req); + +static inline void +nfsd_listener_start_req_set_transport_name(struct nfsd_listener_start_req *req, + const char *transport_name) +{ + free(req->transport_name); + req->_present.transport_name_len = strlen(transport_name); + req->transport_name = malloc(req->_present.transport_name_len + 1); + memcpy(req->transport_name, transport_name, req->_present.transport_name_len); + req->transport_name[req->_present.transport_name_len] = 0; +} +static inline void +nfsd_listener_start_req_set_port(struct nfsd_listener_start_req *req, + __u32 port) +{ + req->_present.port = 1; + req->port = port; +} + +/* + * start server listener + */ +int nfsd_listener_start(struct ynl_sock *ys, + struct nfsd_listener_start_req *req); + +/* ============== NFSD_CMD_LISTENER_GET ============== */ +/* NFSD_CMD_LISTENER_GET - dump */ +struct nfsd_listener_get_list { + struct nfsd_listener_get_list *next; + struct nfsd_listener_get_rsp obj __attribute__ ((aligned (8))); +}; + +void nfsd_listener_get_list_free(struct nfsd_listener_get_list *rsp); + +struct nfsd_listener_get_list *nfsd_listener_get_dump(struct ynl_sock *ys); + #endif /* _LINUX_NFSD_GEN_H */