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Diffstat (limited to 'net')
-rw-r--r--net/9p/client.c165
-rw-r--r--net/9p/mod.c2
-rw-r--r--net/9p/trans_fd.c136
-rw-r--r--net/9p/trans_rdma.c134
-rw-r--r--net/9p/trans_usbg.c5
-rw-r--r--net/9p/trans_virtio.c11
-rw-r--r--net/9p/trans_xen.c7
-rw-r--r--net/socket.c19
-rw-r--r--net/sunrpc/rpc_pipe.c27
-rw-r--r--net/sunrpc/svcsock.c62
-rw-r--r--net/sunrpc/xprtrdma/svc_rdma_transport.c19
11 files changed, 152 insertions, 435 deletions
diff --git a/net/9p/client.c b/net/9p/client.c
index 5c1ca57ccd28..f60d1d041adb 100644
--- a/net/9p/client.c
+++ b/net/9p/client.c
@@ -20,8 +20,8 @@
#include <linux/uio.h>
#include <linux/netfs.h>
#include <net/9p/9p.h>
-#include <linux/parser.h>
#include <linux/seq_file.h>
+#include <linux/fs_context.h>
#include <net/9p/client.h>
#include <net/9p/transport.h>
#include "protocol.h"
@@ -29,32 +29,10 @@
#define CREATE_TRACE_POINTS
#include <trace/events/9p.h>
-/* DEFAULT MSIZE = 32 pages worth of payload + P9_HDRSZ +
- * room for write (16 extra) or read (11 extra) operands.
- */
-
-#define DEFAULT_MSIZE ((128 * 1024) + P9_IOHDRSZ)
-
/* Client Option Parsing (code inspired by NFS code)
* - a little lazy - parse all client options
*/
-enum {
- Opt_msize,
- Opt_trans,
- Opt_legacy,
- Opt_version,
- Opt_err,
-};
-
-static const match_table_t tokens = {
- {Opt_msize, "msize=%u"},
- {Opt_legacy, "noextend"},
- {Opt_trans, "trans=%s"},
- {Opt_version, "version=%s"},
- {Opt_err, NULL},
-};
-
inline int p9_is_proto_dotl(struct p9_client *clnt)
{
return clnt->proto_version == p9_proto_2000L;
@@ -103,124 +81,16 @@ static int safe_errno(int err)
return err;
}
-/* Interpret mount option for protocol version */
-static int get_protocol_version(char *s)
+static int apply_client_options(struct p9_client *clnt, struct fs_context *fc)
{
- int version = -EINVAL;
-
- if (!strcmp(s, "9p2000")) {
- version = p9_proto_legacy;
- p9_debug(P9_DEBUG_9P, "Protocol version: Legacy\n");
- } else if (!strcmp(s, "9p2000.u")) {
- version = p9_proto_2000u;
- p9_debug(P9_DEBUG_9P, "Protocol version: 9P2000.u\n");
- } else if (!strcmp(s, "9p2000.L")) {
- version = p9_proto_2000L;
- p9_debug(P9_DEBUG_9P, "Protocol version: 9P2000.L\n");
- } else {
- pr_info("Unknown protocol version %s\n", s);
- }
+ struct v9fs_context *ctx = fc->fs_private;
- return version;
-}
+ clnt->msize = ctx->client_opts.msize;
+ clnt->trans_mod = ctx->client_opts.trans_mod;
+ ctx->client_opts.trans_mod = NULL;
+ clnt->proto_version = ctx->client_opts.proto_version;
-/**
- * parse_opts - parse mount options into client structure
- * @opts: options string passed from mount
- * @clnt: existing v9fs client information
- *
- * Return 0 upon success, -ERRNO upon failure
- */
-
-static int parse_opts(char *opts, struct p9_client *clnt)
-{
- char *options, *tmp_options;
- char *p;
- substring_t args[MAX_OPT_ARGS];
- int option;
- char *s;
- int ret = 0;
-
- clnt->proto_version = p9_proto_2000L;
- clnt->msize = DEFAULT_MSIZE;
-
- if (!opts)
- return 0;
-
- tmp_options = kstrdup(opts, GFP_KERNEL);
- if (!tmp_options)
- return -ENOMEM;
- options = tmp_options;
-
- while ((p = strsep(&options, ",")) != NULL) {
- int token, r;
-
- if (!*p)
- continue;
- token = match_token(p, tokens, args);
- switch (token) {
- case Opt_msize:
- r = match_int(&args[0], &option);
- if (r < 0) {
- p9_debug(P9_DEBUG_ERROR,
- "integer field, but no integer?\n");
- ret = r;
- continue;
- }
- if (option < 4096) {
- p9_debug(P9_DEBUG_ERROR,
- "msize should be at least 4k\n");
- ret = -EINVAL;
- continue;
- }
- clnt->msize = option;
- break;
- case Opt_trans:
- s = match_strdup(&args[0]);
- if (!s) {
- ret = -ENOMEM;
- p9_debug(P9_DEBUG_ERROR,
- "problem allocating copy of trans arg\n");
- goto free_and_return;
- }
-
- v9fs_put_trans(clnt->trans_mod);
- clnt->trans_mod = v9fs_get_trans_by_name(s);
- if (!clnt->trans_mod) {
- pr_info("Could not find request transport: %s\n",
- s);
- ret = -EINVAL;
- }
- kfree(s);
- break;
- case Opt_legacy:
- clnt->proto_version = p9_proto_legacy;
- break;
- case Opt_version:
- s = match_strdup(&args[0]);
- if (!s) {
- ret = -ENOMEM;
- p9_debug(P9_DEBUG_ERROR,
- "problem allocating copy of version arg\n");
- goto free_and_return;
- }
- r = get_protocol_version(s);
- if (r < 0)
- ret = r;
- else
- clnt->proto_version = r;
- kfree(s);
- break;
- default:
- continue;
- }
- }
-
-free_and_return:
- if (ret)
- v9fs_put_trans(clnt->trans_mod);
- kfree(tmp_options);
- return ret;
+ return 0;
}
static int p9_fcall_init(struct p9_client *c, struct p9_fcall *fc,
@@ -229,8 +99,15 @@ static int p9_fcall_init(struct p9_client *c, struct p9_fcall *fc,
if (likely(c->fcall_cache) && alloc_msize == c->msize) {
fc->sdata = kmem_cache_alloc(c->fcall_cache, GFP_NOFS);
fc->cache = c->fcall_cache;
+ if (!fc->sdata && c->trans_mod->supports_vmalloc) {
+ fc->sdata = kvmalloc(alloc_msize, GFP_NOFS);
+ fc->cache = NULL;
+ }
} else {
- fc->sdata = kmalloc(alloc_msize, GFP_NOFS);
+ if (c->trans_mod->supports_vmalloc)
+ fc->sdata = kvmalloc(alloc_msize, GFP_NOFS);
+ else
+ fc->sdata = kmalloc(alloc_msize, GFP_NOFS);
fc->cache = NULL;
}
if (!fc->sdata)
@@ -252,7 +129,7 @@ void p9_fcall_fini(struct p9_fcall *fc)
if (fc->cache)
kmem_cache_free(fc->cache, fc->sdata);
else
- kfree(fc->sdata);
+ kvfree(fc->sdata);
}
EXPORT_SYMBOL(p9_fcall_fini);
@@ -974,7 +851,7 @@ error:
return err;
}
-struct p9_client *p9_client_create(const char *dev_name, char *options)
+struct p9_client *p9_client_create(struct fs_context *fc)
{
int err;
static atomic_t seqno = ATOMIC_INIT(0);
@@ -997,8 +874,8 @@ struct p9_client *p9_client_create(const char *dev_name, char *options)
idr_init(&clnt->fids);
idr_init(&clnt->reqs);
- err = parse_opts(options, clnt);
- if (err < 0)
+ err = apply_client_options(clnt, fc);
+ if (err)
goto free_client;
if (!clnt->trans_mod)
@@ -1014,7 +891,7 @@ struct p9_client *p9_client_create(const char *dev_name, char *options)
p9_debug(P9_DEBUG_MUX, "clnt %p trans %p msize %d protocol %d\n",
clnt, clnt->trans_mod, clnt->msize, clnt->proto_version);
- err = clnt->trans_mod->create(clnt, dev_name, options);
+ err = clnt->trans_mod->create(clnt, fc);
if (err)
goto put_trans;
diff --git a/net/9p/mod.c b/net/9p/mod.c
index 55576c1866fa..85160b52da55 100644
--- a/net/9p/mod.c
+++ b/net/9p/mod.c
@@ -16,7 +16,6 @@
#include <linux/moduleparam.h>
#include <net/9p/9p.h>
#include <linux/fs.h>
-#include <linux/parser.h>
#include <net/9p/client.h>
#include <net/9p/transport.h>
#include <linux/list.h>
@@ -171,6 +170,7 @@ void v9fs_put_trans(struct p9_trans_module *m)
if (m)
module_put(m->owner);
}
+EXPORT_SYMBOL(v9fs_put_trans);
/**
* init_p9 - Initialize module
diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c
index 49d674f5e73a..0e331c1b2112 100644
--- a/net/9p/trans_fd.c
+++ b/net/9p/trans_fd.c
@@ -22,7 +22,7 @@
#include <linux/uaccess.h>
#include <linux/inet.h>
#include <linux/file.h>
-#include <linux/parser.h>
+#include <linux/fs_context.h>
#include <linux/slab.h>
#include <linux/seq_file.h>
#include <net/9p/9p.h>
@@ -31,48 +31,12 @@
#include <linux/syscalls.h> /* killme */
-#define P9_PORT 564
#define MAX_SOCK_BUF (1024*1024)
#define MAXPOLLWADDR 2
static struct p9_trans_module p9_tcp_trans;
static struct p9_trans_module p9_fd_trans;
-/**
- * struct p9_fd_opts - per-transport options
- * @rfd: file descriptor for reading (trans=fd)
- * @wfd: file descriptor for writing (trans=fd)
- * @port: port to connect to (trans=tcp)
- * @privport: port is privileged
- */
-
-struct p9_fd_opts {
- int rfd;
- int wfd;
- u16 port;
- bool privport;
-};
-
-/*
- * Option Parsing (code inspired by NFS code)
- * - a little lazy - parse all fd-transport options
- */
-
-enum {
- /* Options that take integer arguments */
- Opt_port, Opt_rfdno, Opt_wfdno, Opt_err,
- /* Options that take no arguments */
- Opt_privport,
-};
-
-static const match_table_t tokens = {
- {Opt_port, "port=%u"},
- {Opt_rfdno, "rfdno=%u"},
- {Opt_wfdno, "wfdno=%u"},
- {Opt_privport, "privport"},
- {Opt_err, NULL},
-};
-
enum {
Rworksched = 1, /* read work scheduled or running */
Rpending = 2, /* can read */
@@ -742,7 +706,7 @@ static int p9_fd_cancelled(struct p9_client *client, struct p9_req_t *req)
static int p9_fd_show_options(struct seq_file *m, struct p9_client *clnt)
{
if (clnt->trans_mod == &p9_tcp_trans) {
- if (clnt->trans_opts.tcp.port != P9_PORT)
+ if (clnt->trans_opts.tcp.port != P9_FD_PORT)
seq_printf(m, ",port=%u", clnt->trans_opts.tcp.port);
} else if (clnt->trans_mod == &p9_fd_trans) {
if (clnt->trans_opts.fd.rfd != ~0)
@@ -753,73 +717,6 @@ static int p9_fd_show_options(struct seq_file *m, struct p9_client *clnt)
return 0;
}
-/**
- * parse_opts - parse mount options into p9_fd_opts structure
- * @params: options string passed from mount
- * @opts: fd transport-specific structure to parse options into
- *
- * Returns 0 upon success, -ERRNO upon failure
- */
-
-static int parse_opts(char *params, struct p9_fd_opts *opts)
-{
- char *p;
- substring_t args[MAX_OPT_ARGS];
- int option;
- char *options, *tmp_options;
-
- opts->port = P9_PORT;
- opts->rfd = ~0;
- opts->wfd = ~0;
- opts->privport = false;
-
- if (!params)
- return 0;
-
- tmp_options = kstrdup(params, GFP_KERNEL);
- if (!tmp_options) {
- p9_debug(P9_DEBUG_ERROR,
- "failed to allocate copy of option string\n");
- return -ENOMEM;
- }
- options = tmp_options;
-
- while ((p = strsep(&options, ",")) != NULL) {
- int token;
- int r;
- if (!*p)
- continue;
- token = match_token(p, tokens, args);
- if ((token != Opt_err) && (token != Opt_privport)) {
- r = match_int(&args[0], &option);
- if (r < 0) {
- p9_debug(P9_DEBUG_ERROR,
- "integer field, but no integer?\n");
- continue;
- }
- }
- switch (token) {
- case Opt_port:
- opts->port = option;
- break;
- case Opt_rfdno:
- opts->rfd = option;
- break;
- case Opt_wfdno:
- opts->wfd = option;
- break;
- case Opt_privport:
- opts->privport = true;
- break;
- default:
- continue;
- }
- }
-
- kfree(tmp_options);
- return 0;
-}
-
static int p9_fd_open(struct p9_client *client, int rfd, int wfd)
{
struct p9_trans_fd *ts = kzalloc(sizeof(struct p9_trans_fd),
@@ -974,17 +871,18 @@ static int p9_bind_privport(struct socket *sock)
}
static int
-p9_fd_create_tcp(struct p9_client *client, const char *addr, char *args)
+p9_fd_create_tcp(struct p9_client *client, struct fs_context *fc)
{
+ const char *addr = fc->source;
+ struct v9fs_context *ctx = fc->fs_private;
int err;
char port_str[6];
struct socket *csocket;
struct sockaddr_storage stor = { 0 };
struct p9_fd_opts opts;
- err = parse_opts(args, &opts);
- if (err < 0)
- return err;
+ /* opts are already parsed in context */
+ opts = ctx->fd_opts;
if (!addr)
return -EINVAL;
@@ -1031,8 +929,9 @@ p9_fd_create_tcp(struct p9_client *client, const char *addr, char *args)
}
static int
-p9_fd_create_unix(struct p9_client *client, const char *addr, char *args)
+p9_fd_create_unix(struct p9_client *client, struct fs_context *fc)
{
+ const char *addr = fc->source;
int err;
struct socket *csocket;
struct sockaddr_un sun_server;
@@ -1071,14 +970,12 @@ p9_fd_create_unix(struct p9_client *client, const char *addr, char *args)
}
static int
-p9_fd_create(struct p9_client *client, const char *addr, char *args)
+p9_fd_create(struct p9_client *client, struct fs_context *fc)
{
+ struct v9fs_context *ctx = fc->fs_private;
+ struct p9_fd_opts opts = ctx->fd_opts;
int err;
- struct p9_fd_opts opts;
- err = parse_opts(args, &opts);
- if (err < 0)
- return err;
client->trans_opts.fd.rfd = opts.rfd;
client->trans_opts.fd.wfd = opts.wfd;
@@ -1100,7 +997,8 @@ static struct p9_trans_module p9_tcp_trans = {
.name = "tcp",
.maxsize = MAX_SOCK_BUF,
.pooled_rbuffers = false,
- .def = 0,
+ .def = false,
+ .supports_vmalloc = true,
.create = p9_fd_create_tcp,
.close = p9_fd_close,
.request = p9_fd_request,
@@ -1114,7 +1012,8 @@ MODULE_ALIAS_9P("tcp");
static struct p9_trans_module p9_unix_trans = {
.name = "unix",
.maxsize = MAX_SOCK_BUF,
- .def = 0,
+ .def = false,
+ .supports_vmalloc = true,
.create = p9_fd_create_unix,
.close = p9_fd_close,
.request = p9_fd_request,
@@ -1128,7 +1027,8 @@ MODULE_ALIAS_9P("unix");
static struct p9_trans_module p9_fd_trans = {
.name = "fd",
.maxsize = MAX_SOCK_BUF,
- .def = 0,
+ .def = false,
+ .supports_vmalloc = true,
.create = p9_fd_create,
.close = p9_fd_close,
.request = p9_fd_request,
diff --git a/net/9p/trans_rdma.c b/net/9p/trans_rdma.c
index b84748baf9cb..4d406479f83b 100644
--- a/net/9p/trans_rdma.c
+++ b/net/9p/trans_rdma.c
@@ -22,7 +22,7 @@
#include <linux/uaccess.h>
#include <linux/inet.h>
#include <linux/file.h>
-#include <linux/parser.h>
+#include <linux/fs_context.h>
#include <linux/semaphore.h>
#include <linux/slab.h>
#include <linux/seq_file.h>
@@ -32,14 +32,10 @@
#include <rdma/ib_verbs.h>
#include <rdma/rdma_cm.h>
-#define P9_PORT 5640
-#define P9_RDMA_SQ_DEPTH 32
-#define P9_RDMA_RQ_DEPTH 32
#define P9_RDMA_SEND_SGE 4
#define P9_RDMA_RECV_SGE 4
#define P9_RDMA_IRD 0
#define P9_RDMA_ORD 0
-#define P9_RDMA_TIMEOUT 30000 /* 30 seconds */
#define P9_RDMA_MAXSIZE (1024*1024) /* 1MB */
/**
@@ -110,48 +106,11 @@ struct p9_rdma_context {
};
};
-/**
- * struct p9_rdma_opts - Collection of mount options
- * @port: port of connection
- * @privport: Whether a privileged port may be used
- * @sq_depth: The requested depth of the SQ. This really doesn't need
- * to be any deeper than the number of threads used in the client
- * @rq_depth: The depth of the RQ. Should be greater than or equal to SQ depth
- * @timeout: Time to wait in msecs for CM events
- */
-struct p9_rdma_opts {
- short port;
- bool privport;
- int sq_depth;
- int rq_depth;
- long timeout;
-};
-
-/*
- * Option Parsing (code inspired by NFS code)
- */
-enum {
- /* Options that take integer arguments */
- Opt_port, Opt_rq_depth, Opt_sq_depth, Opt_timeout,
- /* Options that take no argument */
- Opt_privport,
- Opt_err,
-};
-
-static match_table_t tokens = {
- {Opt_port, "port=%u"},
- {Opt_sq_depth, "sq=%u"},
- {Opt_rq_depth, "rq=%u"},
- {Opt_timeout, "timeout=%u"},
- {Opt_privport, "privport"},
- {Opt_err, NULL},
-};
-
static int p9_rdma_show_options(struct seq_file *m, struct p9_client *clnt)
{
struct p9_trans_rdma *rdma = clnt->trans;
- if (rdma->port != P9_PORT)
+ if (rdma->port != P9_RDMA_PORT)
seq_printf(m, ",port=%u", rdma->port);
if (rdma->sq_depth != P9_RDMA_SQ_DEPTH)
seq_printf(m, ",sq=%u", rdma->sq_depth);
@@ -164,77 +123,6 @@ static int p9_rdma_show_options(struct seq_file *m, struct p9_client *clnt)
return 0;
}
-/**
- * parse_opts - parse mount options into rdma options structure
- * @params: options string passed from mount
- * @opts: rdma transport-specific structure to parse options into
- *
- * Returns 0 upon success, -ERRNO upon failure
- */
-static int parse_opts(char *params, struct p9_rdma_opts *opts)
-{
- char *p;
- substring_t args[MAX_OPT_ARGS];
- int option;
- char *options, *tmp_options;
-
- opts->port = P9_PORT;
- opts->sq_depth = P9_RDMA_SQ_DEPTH;
- opts->rq_depth = P9_RDMA_RQ_DEPTH;
- opts->timeout = P9_RDMA_TIMEOUT;
- opts->privport = false;
-
- if (!params)
- return 0;
-
- tmp_options = kstrdup(params, GFP_KERNEL);
- if (!tmp_options) {
- p9_debug(P9_DEBUG_ERROR,
- "failed to allocate copy of option string\n");
- return -ENOMEM;
- }
- options = tmp_options;
-
- while ((p = strsep(&options, ",")) != NULL) {
- int token;
- int r;
- if (!*p)
- continue;
- token = match_token(p, tokens, args);
- if ((token != Opt_err) && (token != Opt_privport)) {
- r = match_int(&args[0], &option);
- if (r < 0) {
- p9_debug(P9_DEBUG_ERROR,
- "integer field, but no integer?\n");
- continue;
- }
- }
- switch (token) {
- case Opt_port:
- opts->port = option;
- break;
- case Opt_sq_depth:
- opts->sq_depth = option;
- break;
- case Opt_rq_depth:
- opts->rq_depth = option;
- break;
- case Opt_timeout:
- opts->timeout = option;
- break;
- case Opt_privport:
- opts->privport = true;
- break;
- default:
- continue;
- }
- }
- /* RQ must be at least as large as the SQ */
- opts->rq_depth = max(opts->rq_depth, opts->sq_depth);
- kfree(tmp_options);
- return 0;
-}
-
static int
p9_cm_event_handler(struct rdma_cm_id *id, struct rdma_cm_event *event)
{
@@ -628,14 +516,15 @@ static int p9_rdma_bind_privport(struct p9_trans_rdma *rdma)
/**
* rdma_create_trans - Transport method for creating a transport instance
* @client: client instance
- * @addr: IP address string
- * @args: Mount options string
+ * @fc: The filesystem context
*/
static int
-rdma_create_trans(struct p9_client *client, const char *addr, char *args)
+rdma_create_trans(struct p9_client *client, struct fs_context *fc)
{
+ const char *addr = fc->source;
+ struct v9fs_context *ctx = fc->fs_private;
+ struct p9_rdma_opts opts = ctx->rdma_opts;
int err;
- struct p9_rdma_opts opts;
struct p9_trans_rdma *rdma;
struct rdma_conn_param conn_param;
struct ib_qp_init_attr qp_attr;
@@ -643,10 +532,8 @@ rdma_create_trans(struct p9_client *client, const char *addr, char *args)
if (addr == NULL)
return -EINVAL;
- /* Parse the transport specific mount options */
- err = parse_opts(args, &opts);
- if (err < 0)
- return err;
+ /* options are already parsed, in the fs context */
+ opts = ctx->rdma_opts;
/* Create and initialize the RDMA transport structure */
rdma = alloc_rdma(&opts);
@@ -748,7 +635,8 @@ static struct p9_trans_module p9_rdma_trans = {
.name = "rdma",
.maxsize = P9_RDMA_MAXSIZE,
.pooled_rbuffers = true,
- .def = 0,
+ .def = false,
+ .supports_vmalloc = false,
.owner = THIS_MODULE,
.create = rdma_create_trans,
.close = rdma_close,
diff --git a/net/9p/trans_usbg.c b/net/9p/trans_usbg.c
index 468f7e8f0277..93547637deae 100644
--- a/net/9p/trans_usbg.c
+++ b/net/9p/trans_usbg.c
@@ -27,6 +27,7 @@
#include <linux/cleanup.h>
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/fs_context.h>
#include <linux/usb/composite.h>
#include <linux/usb/func_utils.h>
@@ -376,8 +377,9 @@ out:
return ret;
}
-static int p9_usbg_create(struct p9_client *client, const char *devname, char *args)
+static int p9_usbg_create(struct p9_client *client, struct fs_context *fc)
{
+ const char *devname = fc->source;
struct f_usb9pfs_dev *dev;
struct f_usb9pfs *usb9pfs;
int ret = -ENOENT;
@@ -514,6 +516,7 @@ static struct p9_trans_module p9_usbg_trans = {
.close = p9_usbg_close,
.request = p9_usbg_request,
.cancel = p9_usbg_cancel,
+ .supports_vmalloc = false,
.owner = THIS_MODULE,
};
diff --git a/net/9p/trans_virtio.c b/net/9p/trans_virtio.c
index 0b8086f58ad5..10c2dd486438 100644
--- a/net/9p/trans_virtio.c
+++ b/net/9p/trans_virtio.c
@@ -26,7 +26,7 @@
#include <linux/highmem.h>
#include <linux/slab.h>
#include <net/9p/9p.h>
-#include <linux/parser.h>
+#include <linux/fs_context.h>
#include <net/9p/client.h>
#include <net/9p/transport.h>
#include <linux/scatterlist.h>
@@ -679,8 +679,7 @@ fail:
/**
* p9_virtio_create - allocate a new virtio channel
* @client: client instance invoking this transport
- * @devname: string identifying the channel to connect to (unused)
- * @args: args passed from sys_mount() for per-transport options (unused)
+ * @fc: the filesystem context
*
* This sets up a transport channel for 9p communication. Right now
* we only match the first available channel, but eventually we could look up
@@ -691,8 +690,9 @@ fail:
*/
static int
-p9_virtio_create(struct p9_client *client, const char *devname, char *args)
+p9_virtio_create(struct p9_client *client, struct fs_context *fc)
{
+ const char *devname = fc->source;
struct virtio_chan *chan;
int ret = -ENOENT;
int found = 0;
@@ -802,7 +802,8 @@ static struct p9_trans_module p9_virtio_trans = {
*/
.maxsize = PAGE_SIZE * (VIRTQUEUE_NUM - 3),
.pooled_rbuffers = false,
- .def = 1,
+ .def = true,
+ .supports_vmalloc = false,
.owner = THIS_MODULE,
};
diff --git a/net/9p/trans_xen.c b/net/9p/trans_xen.c
index b9ff69c7522a..12f752a92332 100644
--- a/net/9p/trans_xen.c
+++ b/net/9p/trans_xen.c
@@ -15,6 +15,7 @@
#include <linux/module.h>
#include <linux/spinlock.h>
+#include <linux/fs_context.h>
#include <net/9p/9p.h>
#include <net/9p/client.h>
#include <net/9p/transport.h>
@@ -66,8 +67,9 @@ static int p9_xen_cancel(struct p9_client *client, struct p9_req_t *req)
return 1;
}
-static int p9_xen_create(struct p9_client *client, const char *addr, char *args)
+static int p9_xen_create(struct p9_client *client, struct fs_context *fc)
{
+ const char *addr = fc->source;
struct xen_9pfs_front_priv *priv;
if (addr == NULL)
@@ -257,7 +259,8 @@ static struct p9_trans_module p9_xen_trans = {
.name = "xen",
.maxsize = 1 << (XEN_9PFS_RING_ORDER + XEN_PAGE_SHIFT - 2),
.pooled_rbuffers = false,
- .def = 1,
+ .def = true,
+ .supports_vmalloc = false,
.create = p9_xen_create,
.close = p9_xen_close,
.request = p9_xen_request,
diff --git a/net/socket.c b/net/socket.c
index 42fc3028e891..136b98c54fb3 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -503,12 +503,21 @@ EXPORT_SYMBOL(sock_alloc_file);
static int sock_map_fd(struct socket *sock, int flags)
{
- int fd;
-
- fd = FD_ADD(flags, sock_alloc_file(sock, flags, NULL));
- if (fd < 0)
+ struct file *newfile;
+ int fd = get_unused_fd_flags(flags);
+ if (unlikely(fd < 0)) {
sock_release(sock);
- return fd;
+ return fd;
+ }
+
+ newfile = sock_alloc_file(sock, flags, NULL);
+ if (!IS_ERR(newfile)) {
+ fd_install(fd, newfile);
+ return fd;
+ }
+
+ put_unused_fd(fd);
+ return PTR_ERR(newfile);
}
/**
diff --git a/net/sunrpc/rpc_pipe.c b/net/sunrpc/rpc_pipe.c
index 0bd1df2ebb47..379daefc4847 100644
--- a/net/sunrpc/rpc_pipe.c
+++ b/net/sunrpc/rpc_pipe.c
@@ -536,17 +536,16 @@ static int rpc_new_file(struct dentry *parent,
inode = rpc_get_inode(dir->i_sb, S_IFREG | mode);
if (unlikely(!inode)) {
- dput(dentry);
- inode_unlock(dir);
+ simple_done_creating(dentry);
return -ENOMEM;
}
inode->i_ino = iunique(dir->i_sb, 100);
if (i_fop)
inode->i_fop = i_fop;
rpc_inode_setowner(inode, private);
- d_instantiate(dentry, inode);
+ d_make_persistent(dentry, inode);
fsnotify_create(dir, dentry);
- inode_unlock(dir);
+ simple_done_creating(dentry);
return 0;
}
@@ -563,18 +562,17 @@ static struct dentry *rpc_new_dir(struct dentry *parent,
inode = rpc_get_inode(dir->i_sb, S_IFDIR | mode);
if (unlikely(!inode)) {
- dput(dentry);
- inode_unlock(dir);
+ simple_done_creating(dentry);
return ERR_PTR(-ENOMEM);
}
inode->i_ino = iunique(dir->i_sb, 100);
inc_nlink(dir);
- d_instantiate(dentry, inode);
+ d_make_persistent(dentry, inode);
fsnotify_mkdir(dir, dentry);
- inode_unlock(dir);
+ simple_done_creating(dentry);
- return dentry;
+ return dentry; // borrowed
}
static int rpc_populate(struct dentry *parent,
@@ -657,8 +655,7 @@ int rpc_mkpipe_dentry(struct dentry *parent, const char *name,
inode = rpc_get_inode(dir->i_sb, umode);
if (unlikely(!inode)) {
- dput(dentry);
- inode_unlock(dir);
+ simple_done_creating(dentry);
err = -ENOMEM;
goto failed;
}
@@ -668,10 +665,10 @@ int rpc_mkpipe_dentry(struct dentry *parent, const char *name,
rpci->private = private;
rpci->pipe = pipe;
rpc_inode_setowner(inode, private);
- d_instantiate(dentry, inode);
- pipe->dentry = dentry;
+ pipe->dentry = dentry; // borrowed
+ d_make_persistent(dentry, inode);
fsnotify_create(dir, dentry);
- inode_unlock(dir);
+ simple_done_creating(dentry);
return 0;
failed:
@@ -1206,7 +1203,7 @@ static void rpc_kill_sb(struct super_block *sb)
sb);
mutex_unlock(&sn->pipefs_sb_lock);
out:
- kill_litter_super(sb);
+ kill_anon_super(sb);
put_net(net);
}
diff --git a/net/sunrpc/svcsock.c b/net/sunrpc/svcsock.c
index 16ff6c100821..d61cd9b40491 100644
--- a/net/sunrpc/svcsock.c
+++ b/net/sunrpc/svcsock.c
@@ -68,6 +68,17 @@
#define RPCDBG_FACILITY RPCDBG_SVCXPRT
+/*
+ * For UDP:
+ * 1 for header page
+ * enough pages for RPCSVC_MAXPAYLOAD_UDP
+ * 1 in case payload is not aligned
+ * 1 for tail page
+ */
+enum {
+ SUNRPC_MAX_UDP_SENDPAGES = 1 + RPCSVC_MAXPAYLOAD_UDP / PAGE_SIZE + 1 + 1
+};
+
/* To-do: to avoid tying up an nfsd thread while waiting for a
* handshake request, the request could instead be deferred.
*/
@@ -740,14 +751,14 @@ static int svc_udp_sendto(struct svc_rqst *rqstp)
if (svc_xprt_is_dead(xprt))
goto out_notconn;
- count = xdr_buf_to_bvec(rqstp->rq_bvec, rqstp->rq_maxpages, xdr);
+ count = xdr_buf_to_bvec(svsk->sk_bvec, SUNRPC_MAX_UDP_SENDPAGES, xdr);
- iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, rqstp->rq_bvec,
+ iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, svsk->sk_bvec,
count, rqstp->rq_res.len);
err = sock_sendmsg(svsk->sk_sock, &msg);
if (err == -ECONNREFUSED) {
/* ICMP error on earlier request. */
- iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, rqstp->rq_bvec,
+ iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, svsk->sk_bvec,
count, rqstp->rq_res.len);
err = sock_sendmsg(svsk->sk_sock, &msg);
}
@@ -1062,9 +1073,10 @@ static ssize_t svc_tcp_read_marker(struct svc_sock *svsk,
return svc_sock_reclen(svsk);
err_too_large:
- net_notice_ratelimited("svc: %s %s RPC fragment too large: %d\n",
- __func__, svsk->sk_xprt.xpt_server->sv_name,
- svc_sock_reclen(svsk));
+ net_notice_ratelimited("svc: %s oversized RPC fragment (%u octets) from %pISpc\n",
+ svsk->sk_xprt.xpt_server->sv_name,
+ svc_sock_reclen(svsk),
+ (struct sockaddr *)&svsk->sk_xprt.xpt_remote);
svc_xprt_deferred_close(&svsk->sk_xprt);
err_short:
return -EAGAIN;
@@ -1235,19 +1247,19 @@ static int svc_tcp_sendmsg(struct svc_sock *svsk, struct svc_rqst *rqstp,
int ret;
/* The stream record marker is copied into a temporary page
- * fragment buffer so that it can be included in rq_bvec.
+ * fragment buffer so that it can be included in sk_bvec.
*/
buf = page_frag_alloc(&svsk->sk_frag_cache, sizeof(marker),
GFP_KERNEL);
if (!buf)
return -ENOMEM;
memcpy(buf, &marker, sizeof(marker));
- bvec_set_virt(rqstp->rq_bvec, buf, sizeof(marker));
+ bvec_set_virt(svsk->sk_bvec, buf, sizeof(marker));
- count = xdr_buf_to_bvec(rqstp->rq_bvec + 1, rqstp->rq_maxpages,
+ count = xdr_buf_to_bvec(svsk->sk_bvec + 1, rqstp->rq_maxpages,
&rqstp->rq_res);
- iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, rqstp->rq_bvec,
+ iov_iter_bvec(&msg.msg_iter, ITER_SOURCE, svsk->sk_bvec,
1 + count, sizeof(marker) + rqstp->rq_res.len);
ret = sock_sendmsg(svsk->sk_sock, &msg);
page_frag_free(buf);
@@ -1392,6 +1404,20 @@ void svc_sock_update_bufs(struct svc_serv *serv)
spin_unlock_bh(&serv->sv_lock);
}
+static int svc_sock_sendpages(struct svc_serv *serv, struct socket *sock, int flags)
+{
+ switch (sock->type) {
+ case SOCK_STREAM:
+ /* +1 for TCP record marker */
+ if (flags & SVC_SOCK_TEMPORARY)
+ return svc_serv_maxpages(serv) + 1;
+ return 0;
+ case SOCK_DGRAM:
+ return SUNRPC_MAX_UDP_SENDPAGES;
+ }
+ return -EINVAL;
+}
+
/*
* Initialize socket for RPC use and create svc_sock struct
*/
@@ -1402,12 +1428,26 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv,
struct svc_sock *svsk;
struct sock *inet;
int pmap_register = !(flags & SVC_SOCK_ANONYMOUS);
+ int sendpages;
unsigned long pages;
+ sendpages = svc_sock_sendpages(serv, sock, flags);
+ if (sendpages < 0)
+ return ERR_PTR(sendpages);
+
pages = svc_serv_maxpages(serv);
svsk = kzalloc(struct_size(svsk, sk_pages, pages), GFP_KERNEL);
if (!svsk)
return ERR_PTR(-ENOMEM);
+
+ if (sendpages) {
+ svsk->sk_bvec = kcalloc(sendpages, sizeof(*svsk->sk_bvec), GFP_KERNEL);
+ if (!svsk->sk_bvec) {
+ kfree(svsk);
+ return ERR_PTR(-ENOMEM);
+ }
+ }
+
svsk->sk_maxpages = pages;
inet = sock->sk;
@@ -1419,6 +1459,7 @@ static struct svc_sock *svc_setup_socket(struct svc_serv *serv,
inet->sk_protocol,
ntohs(inet_sk(inet)->inet_sport));
if (err < 0) {
+ kfree(svsk->sk_bvec);
kfree(svsk);
return ERR_PTR(err);
}
@@ -1636,5 +1677,6 @@ static void svc_sock_free(struct svc_xprt *xprt)
sock_release(sock);
page_frag_cache_drain(&svsk->sk_frag_cache);
+ kfree(svsk->sk_bvec);
kfree(svsk);
}
diff --git a/net/sunrpc/xprtrdma/svc_rdma_transport.c b/net/sunrpc/xprtrdma/svc_rdma_transport.c
index 3d7f1413df02..b7b318ad25c4 100644
--- a/net/sunrpc/xprtrdma/svc_rdma_transport.c
+++ b/net/sunrpc/xprtrdma/svc_rdma_transport.c
@@ -591,12 +591,18 @@ static void svc_rdma_detach(struct svc_xprt *xprt)
rdma_disconnect(rdma->sc_cm_id);
}
-static void __svc_rdma_free(struct work_struct *work)
+/**
+ * svc_rdma_free - Release class-specific transport resources
+ * @xprt: Generic svc transport object
+ */
+static void svc_rdma_free(struct svc_xprt *xprt)
{
struct svcxprt_rdma *rdma =
- container_of(work, struct svcxprt_rdma, sc_work);
+ container_of(xprt, struct svcxprt_rdma, sc_xprt);
struct ib_device *device = rdma->sc_cm_id->device;
+ might_sleep();
+
/* This blocks until the Completion Queues are empty */
if (rdma->sc_qp && !IS_ERR(rdma->sc_qp))
ib_drain_qp(rdma->sc_qp);
@@ -629,15 +635,6 @@ static void __svc_rdma_free(struct work_struct *work)
kfree(rdma);
}
-static void svc_rdma_free(struct svc_xprt *xprt)
-{
- struct svcxprt_rdma *rdma =
- container_of(xprt, struct svcxprt_rdma, sc_xprt);
-
- INIT_WORK(&rdma->sc_work, __svc_rdma_free);
- schedule_work(&rdma->sc_work);
-}
-
static int svc_rdma_has_wspace(struct svc_xprt *xprt)
{
struct svcxprt_rdma *rdma =
generated by cgit (git 2.34.1) at 2025-12-11 22:04:04 +0000