From patchwork Sat Aug 31 22:37:33 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mike Snitzer X-Patchwork-Id: 13786196 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 13093183CA0; Sat, 31 Aug 2024 22:38:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725143894; cv=none; b=n9/YqzCTI/P6z3zByR0u3w7woGTAY58XiAsLB3z20su8jNpUGwBYyLi4L2r4NiAKTuExnD+sV+2gKSkmA31sB4gdKF8QUI+LHiY4Fl8YJl+kmuP4oKcDPC5ZKuYmzIx4wx6X5Sn8qF/B2dim0GMsWF0xcOh3T0JqH/vOhDogJbo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1725143894; c=relaxed/simple; bh=+xugZXfzN2L5+NPUj8pPrqShN5iqevVI+jTZN11+O7o=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=fxGd3/drJ18vEPL7SDFWEBVlKxnwO1i08ZAt0pnG2z0LWvGmF1TYQ7SizJjLdOcVgaDVeugmrYFDJUkPhxXvQypu7kD8+NOFCmgX5RElZPwdvLenWKk5cGS2SQzruIP5EopLRPRi9iGWqGBEV6hOQVkbHztgHXN7LSWnFmzirAc= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=XlP6OGf4; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="XlP6OGf4" Received: by smtp.kernel.org (Postfix) with ESMTPSA id C6659C4CEC7; Sat, 31 Aug 2024 22:38:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1725143894; bh=+xugZXfzN2L5+NPUj8pPrqShN5iqevVI+jTZN11+O7o=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XlP6OGf4IjnGu/fivW6yIa6n6zNTNqSUyhmeZxYyO3xq5a+lHXu5mqj07jsDB7RQy fANJdAD9dcw6zm4tToDu9XxV16S3UV5KrA5j5cqrmNTd47r7eMQLD8UYuJDcYfhIAv U+vYUrIchz+7ShWc0dUxmIhDC0JoGzWhfvB810M1O7tq/bqduTT8QxOQMd+wNcLNSi IbXnTTet3+fPcKMxemGxMNfnCO2qQymU8883eB3ouLGqmRnzhShbJcWMTgG4slCHKE l00N5kr0pQwgGuDcG/XXS6DAwNyA1IKJkiHWuaMBy9HXv20J/bSKOzoXWSjWo4J/1Z z2crQ4hej+dcw== From: Mike Snitzer To: linux-nfs@vger.kernel.org Cc: Jeff Layton , Chuck Lever , Anna Schumaker , Trond Myklebust , NeilBrown , linux-fsdevel@vger.kernel.org Subject: [PATCH v15 13/26] SUNRPC: replace program list with program array Date: Sat, 31 Aug 2024 18:37:33 -0400 Message-ID: <20240831223755.8569-14-snitzer@kernel.org> X-Mailer: git-send-email 2.44.0 In-Reply-To: <20240831223755.8569-1-snitzer@kernel.org> References: <20240831223755.8569-1-snitzer@kernel.org> Precedence: bulk X-Mailing-List: linux-nfs@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: NeilBrown A service created with svc_create_pooled() can be given a linked list of programs and all of these will be served. Using a linked list makes it cumbersome when there are several programs that can be optionally selected with CONFIG settings. After this patch is applied, API consumers must use only svc_create_pooled() when creating an RPC service that listens for more than one RPC program. Signed-off-by: NeilBrown Signed-off-by: Mike Snitzer Acked-by: Chuck Lever Reviewed-by: Jeff Layton --- fs/nfsd/nfsctl.c | 2 +- fs/nfsd/nfsd.h | 2 +- fs/nfsd/nfssvc.c | 38 ++++++++++----------- include/linux/sunrpc/svc.h | 7 ++-- net/sunrpc/svc.c | 68 ++++++++++++++++++++++---------------- net/sunrpc/svc_xprt.c | 2 +- net/sunrpc/svcauth_unix.c | 3 +- 7 files changed, 67 insertions(+), 55 deletions(-) diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 1c9e5b4bcb0a..64c1b4d649bc 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -2246,7 +2246,7 @@ static __net_init int nfsd_net_init(struct net *net) if (retval) goto out_repcache_error; memset(&nn->nfsd_svcstats, 0, sizeof(nn->nfsd_svcstats)); - nn->nfsd_svcstats.program = &nfsd_program; + nn->nfsd_svcstats.program = &nfsd_programs[0]; for (i = 0; i < sizeof(nn->nfsd_versions); i++) nn->nfsd_versions[i] = nfsd_support_version(i); for (i = 0; i < sizeof(nn->nfsd4_minorversions); i++) diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h index 4ccbf014a2c7..b0d3e82d6dcd 100644 --- a/fs/nfsd/nfsd.h +++ b/fs/nfsd/nfsd.h @@ -85,7 +85,7 @@ struct nfsd_genl_rqstp { u32 rq_opnum[NFSD_MAX_OPS_PER_COMPOUND]; }; -extern struct svc_program nfsd_program; +extern struct svc_program nfsd_programs[]; extern const struct svc_version nfsd_version2, nfsd_version3, nfsd_version4; extern struct mutex nfsd_mutex; extern spinlock_t nfsd_drc_lock; diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c index e43d440f9f0a..c639fbe4d8c2 100644 --- a/fs/nfsd/nfssvc.c +++ b/fs/nfsd/nfssvc.c @@ -35,7 +35,6 @@ #define NFSDDBG_FACILITY NFSDDBG_SVC atomic_t nfsd_th_cnt = ATOMIC_INIT(0); -extern struct svc_program nfsd_program; static int nfsd(void *vrqstp); #if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) static int nfsd_acl_rpcbind_set(struct net *, @@ -90,20 +89,9 @@ static const struct svc_version *nfsd_acl_version[] = { # endif }; -#define NFSD_ACL_MINVERS 2 +#define NFSD_ACL_MINVERS 2 #define NFSD_ACL_NRVERS ARRAY_SIZE(nfsd_acl_version) -static struct svc_program nfsd_acl_program = { - .pg_prog = NFS_ACL_PROGRAM, - .pg_nvers = NFSD_ACL_NRVERS, - .pg_vers = nfsd_acl_version, - .pg_name = "nfsacl", - .pg_class = "nfsd", - .pg_authenticate = &svc_set_client, - .pg_init_request = nfsd_acl_init_request, - .pg_rpcbind_set = nfsd_acl_rpcbind_set, -}; - #endif /* defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) */ static const struct svc_version *nfsd_version[NFSD_MAXVERS+1] = { @@ -116,18 +104,29 @@ static const struct svc_version *nfsd_version[NFSD_MAXVERS+1] = { #endif }; -struct svc_program nfsd_program = { -#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) - .pg_next = &nfsd_acl_program, -#endif +struct svc_program nfsd_programs[] = { + { .pg_prog = NFS_PROGRAM, /* program number */ .pg_nvers = NFSD_MAXVERS+1, /* nr of entries in nfsd_version */ .pg_vers = nfsd_version, /* version table */ .pg_name = "nfsd", /* program name */ .pg_class = "nfsd", /* authentication class */ - .pg_authenticate = &svc_set_client, /* export authentication */ + .pg_authenticate = svc_set_client, /* export authentication */ .pg_init_request = nfsd_init_request, .pg_rpcbind_set = nfsd_rpcbind_set, + }, +#if defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) + { + .pg_prog = NFS_ACL_PROGRAM, + .pg_nvers = NFSD_ACL_NRVERS, + .pg_vers = nfsd_acl_version, + .pg_name = "nfsacl", + .pg_class = "nfsd", + .pg_authenticate = svc_set_client, + .pg_init_request = nfsd_acl_init_request, + .pg_rpcbind_set = nfsd_acl_rpcbind_set, + }, +#endif /* defined(CONFIG_NFSD_V2_ACL) || defined(CONFIG_NFSD_V3_ACL) */ }; bool nfsd_support_version(int vers) @@ -637,7 +636,8 @@ int nfsd_create_serv(struct net *net) if (nfsd_max_blksize == 0) nfsd_max_blksize = nfsd_get_default_max_blksize(); nfsd_reset_versions(nn); - serv = svc_create_pooled(&nfsd_program, &nn->nfsd_svcstats, + serv = svc_create_pooled(nfsd_programs, ARRAY_SIZE(nfsd_programs), + &nn->nfsd_svcstats, nfsd_max_blksize, nfsd); if (serv == NULL) return -ENOMEM; diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h index 437672bcaa22..c7ad2fb2a155 100644 --- a/include/linux/sunrpc/svc.h +++ b/include/linux/sunrpc/svc.h @@ -67,9 +67,10 @@ enum { * We currently do not support more than one RPC program per daemon. */ struct svc_serv { - struct svc_program * sv_program; /* RPC program */ + struct svc_program * sv_programs; /* RPC programs */ struct svc_stat * sv_stats; /* RPC statistics */ spinlock_t sv_lock; + unsigned int sv_nprogs; /* Number of sv_programs */ unsigned int sv_nrthreads; /* # of server threads */ unsigned int sv_maxconn; /* max connections allowed or * '0' causing max to be based @@ -357,10 +358,9 @@ struct svc_process_info { }; /* - * List of RPC programs on the same transport endpoint + * RPC program - an array of these can use the same transport endpoint */ struct svc_program { - struct svc_program * pg_next; /* other programs (same xprt) */ u32 pg_prog; /* program number */ unsigned int pg_lovers; /* lowest version */ unsigned int pg_hivers; /* highest version */ @@ -438,6 +438,7 @@ bool svc_rqst_replace_page(struct svc_rqst *rqstp, void svc_rqst_release_pages(struct svc_rqst *rqstp); void svc_exit_thread(struct svc_rqst *); struct svc_serv * svc_create_pooled(struct svc_program *prog, + unsigned int nprog, struct svc_stat *stats, unsigned int bufsize, int (*threadfn)(void *data)); diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c index ff6f3e35b36d..b33386d249c2 100644 --- a/net/sunrpc/svc.c +++ b/net/sunrpc/svc.c @@ -440,10 +440,11 @@ EXPORT_SYMBOL_GPL(svc_rpcb_cleanup); static int svc_uses_rpcbind(struct svc_serv *serv) { - struct svc_program *progp; - unsigned int i; + unsigned int p, i; + + for (p = 0; p < serv->sv_nprogs; p++) { + struct svc_program *progp = &serv->sv_programs[p]; - for (progp = serv->sv_program; progp; progp = progp->pg_next) { for (i = 0; i < progp->pg_nvers; i++) { if (progp->pg_vers[i] == NULL) continue; @@ -480,7 +481,7 @@ __svc_init_bc(struct svc_serv *serv) * Create an RPC service */ static struct svc_serv * -__svc_create(struct svc_program *prog, struct svc_stat *stats, +__svc_create(struct svc_program *prog, int nprogs, struct svc_stat *stats, unsigned int bufsize, int npools, int (*threadfn)(void *data)) { struct svc_serv *serv; @@ -491,7 +492,8 @@ __svc_create(struct svc_program *prog, struct svc_stat *stats, if (!(serv = kzalloc(sizeof(*serv), GFP_KERNEL))) return NULL; serv->sv_name = prog->pg_name; - serv->sv_program = prog; + serv->sv_programs = prog; + serv->sv_nprogs = nprogs; serv->sv_stats = stats; if (bufsize > RPCSVC_MAXPAYLOAD) bufsize = RPCSVC_MAXPAYLOAD; @@ -499,17 +501,18 @@ __svc_create(struct svc_program *prog, struct svc_stat *stats, serv->sv_max_mesg = roundup(serv->sv_max_payload + PAGE_SIZE, PAGE_SIZE); serv->sv_threadfn = threadfn; xdrsize = 0; - while (prog) { - prog->pg_lovers = prog->pg_nvers-1; - for (vers=0; verspg_nvers ; vers++) - if (prog->pg_vers[vers]) { - prog->pg_hivers = vers; - if (prog->pg_lovers > vers) - prog->pg_lovers = vers; - if (prog->pg_vers[vers]->vs_xdrsize > xdrsize) - xdrsize = prog->pg_vers[vers]->vs_xdrsize; + for (i = 0; i < nprogs; i++) { + struct svc_program *progp = &prog[i]; + + progp->pg_lovers = progp->pg_nvers-1; + for (vers = 0; vers < progp->pg_nvers ; vers++) + if (progp->pg_vers[vers]) { + progp->pg_hivers = vers; + if (progp->pg_lovers > vers) + progp->pg_lovers = vers; + if (progp->pg_vers[vers]->vs_xdrsize > xdrsize) + xdrsize = progp->pg_vers[vers]->vs_xdrsize; } - prog = prog->pg_next; } serv->sv_xdrsize = xdrsize; INIT_LIST_HEAD(&serv->sv_tempsocks); @@ -558,13 +561,14 @@ __svc_create(struct svc_program *prog, struct svc_stat *stats, struct svc_serv *svc_create(struct svc_program *prog, unsigned int bufsize, int (*threadfn)(void *data)) { - return __svc_create(prog, NULL, bufsize, 1, threadfn); + return __svc_create(prog, 1, NULL, bufsize, 1, threadfn); } EXPORT_SYMBOL_GPL(svc_create); /** * svc_create_pooled - Create an RPC service with pooled threads - * @prog: the RPC program the new service will handle + * @prog: Array of RPC programs the new service will handle + * @nprogs: Number of programs in the array * @stats: the stats struct if desired * @bufsize: maximum message size for @prog * @threadfn: a function to service RPC requests for @prog @@ -572,6 +576,7 @@ EXPORT_SYMBOL_GPL(svc_create); * Returns an instantiated struct svc_serv object or NULL. */ struct svc_serv *svc_create_pooled(struct svc_program *prog, + unsigned int nprogs, struct svc_stat *stats, unsigned int bufsize, int (*threadfn)(void *data)) @@ -579,7 +584,7 @@ struct svc_serv *svc_create_pooled(struct svc_program *prog, struct svc_serv *serv; unsigned int npools = svc_pool_map_get(); - serv = __svc_create(prog, stats, bufsize, npools, threadfn); + serv = __svc_create(prog, nprogs, stats, bufsize, npools, threadfn); if (!serv) goto out_err; serv->sv_is_pooled = true; @@ -602,16 +607,16 @@ svc_destroy(struct svc_serv **servp) *servp = NULL; - dprintk("svc: svc_destroy(%s)\n", serv->sv_program->pg_name); + dprintk("svc: svc_destroy(%s)\n", serv->sv_programs->pg_name); timer_shutdown_sync(&serv->sv_temptimer); /* * Remaining transports at this point are not expected. */ WARN_ONCE(!list_empty(&serv->sv_permsocks), - "SVC: permsocks remain for %s\n", serv->sv_program->pg_name); + "SVC: permsocks remain for %s\n", serv->sv_programs->pg_name); WARN_ONCE(!list_empty(&serv->sv_tempsocks), - "SVC: tempsocks remain for %s\n", serv->sv_program->pg_name); + "SVC: tempsocks remain for %s\n", serv->sv_programs->pg_name); cache_clean_deferred(serv); @@ -1149,15 +1154,16 @@ int svc_register(const struct svc_serv *serv, struct net *net, const int family, const unsigned short proto, const unsigned short port) { - struct svc_program *progp; - unsigned int i; + unsigned int p, i; int error = 0; WARN_ON_ONCE(proto == 0 && port == 0); if (proto == 0 && port == 0) return -EINVAL; - for (progp = serv->sv_program; progp; progp = progp->pg_next) { + for (p = 0; p < serv->sv_nprogs; p++) { + struct svc_program *progp = &serv->sv_programs[p]; + for (i = 0; i < progp->pg_nvers; i++) { error = progp->pg_rpcbind_set(net, progp, i, @@ -1209,13 +1215,14 @@ static void __svc_unregister(struct net *net, const u32 program, const u32 versi static void svc_unregister(const struct svc_serv *serv, struct net *net) { struct sighand_struct *sighand; - struct svc_program *progp; unsigned long flags; - unsigned int i; + unsigned int p, i; clear_thread_flag(TIF_SIGPENDING); - for (progp = serv->sv_program; progp; progp = progp->pg_next) { + for (p = 0; p < serv->sv_nprogs; p++) { + struct svc_program *progp = &serv->sv_programs[p]; + for (i = 0; i < progp->pg_nvers; i++) { if (progp->pg_vers[i] == NULL) continue; @@ -1321,7 +1328,7 @@ svc_process_common(struct svc_rqst *rqstp) struct svc_process_info process; enum svc_auth_status auth_res; unsigned int aoffset; - int rc; + int pr, rc; __be32 *p; /* Will be turned off only when NFSv4 Sessions are used */ @@ -1345,9 +1352,12 @@ svc_process_common(struct svc_rqst *rqstp) rqstp->rq_vers = be32_to_cpup(p++); rqstp->rq_proc = be32_to_cpup(p); - for (progp = serv->sv_program; progp; progp = progp->pg_next) + for (pr = 0; pr < serv->sv_nprogs; pr++) { + progp = &serv->sv_programs[pr]; + if (rqstp->rq_prog == progp->pg_prog) break; + } /* * Decode auth data, and add verifier to reply buffer. diff --git a/net/sunrpc/svc_xprt.c b/net/sunrpc/svc_xprt.c index 53ebc719ff5a..43c57124de52 100644 --- a/net/sunrpc/svc_xprt.c +++ b/net/sunrpc/svc_xprt.c @@ -268,7 +268,7 @@ static int _svc_xprt_create(struct svc_serv *serv, const char *xprt_name, spin_unlock(&svc_xprt_class_lock); newxprt = xcl->xcl_ops->xpo_create(serv, net, sap, len, flags); if (IS_ERR(newxprt)) { - trace_svc_xprt_create_err(serv->sv_program->pg_name, + trace_svc_xprt_create_err(serv->sv_programs->pg_name, xcl->xcl_name, sap, len, newxprt); module_put(xcl->xcl_owner); diff --git a/net/sunrpc/svcauth_unix.c b/net/sunrpc/svcauth_unix.c index 04b45588ae6f..8ca98b146ec8 100644 --- a/net/sunrpc/svcauth_unix.c +++ b/net/sunrpc/svcauth_unix.c @@ -697,7 +697,8 @@ svcauth_unix_set_client(struct svc_rqst *rqstp) rqstp->rq_auth_stat = rpc_autherr_badcred; ipm = ip_map_cached_get(xprt); if (ipm == NULL) - ipm = __ip_map_lookup(sn->ip_map_cache, rqstp->rq_server->sv_program->pg_class, + ipm = __ip_map_lookup(sn->ip_map_cache, + rqstp->rq_server->sv_programs->pg_class, &sin6->sin6_addr); if (ipm == NULL)