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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client

Browse Source 
Pull Ceph updates for 3.4-rc1 from Sage Weil:
 "Alex has been busy.  There are a range of rbd and libceph cleanups,
  especially surrounding device setup and teardown, and a few critical
  fixes in that code.  There are more cleanups in the messenger code,
  virtual xattrs, a fix for CRC calculation/checks, and lots of other
  miscellaneous stuff.

  There's a patch from Amon Ott to make inos behave a bit better on
  32-bit boxes, some decode check fixes from Xi Wang, and network
  throttling fix from Jim Schutt, and a couple RBD fixes from Josh
  Durgin.

  No new functionality, just a lot of cleanup and bug fixing."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/sage/ceph-client: (65 commits)
  rbd: move snap_rwsem to the device, rename to header_rwsem
  ceph: fix three bugs, two in ceph_vxattrcb_file_layout()
  libceph: isolate kmap() call in write_partial_msg_pages()
  libceph: rename "page_shift" variable to something sensible
  libceph: get rid of zero_page_address
  libceph: only call kernel_sendpage() via helper
  libceph: use kernel_sendpage() for sending zeroes
  libceph: fix inverted crc option logic
  libceph: some simple changes
  libceph: small refactor in write_partial_kvec()
  libceph: do crc calculations outside loop
  libceph: separate CRC calculation from byte swapping
  libceph: use "do" in CRC-related Boolean variables
  ceph: ensure Boolean options support both senses
  libceph: a few small changes
  libceph: make ceph_tcp_connect() return int
  libceph: encapsulate some messenger cleanup code
  libceph: make ceph_msgr_wq private
  libceph: encapsulate connection kvec operations
  libceph: move prepare_write_banner()
  ...
This commit is contained in:
Linus Torvalds 2012-03-28 10:01:29 -07:00
commit 56b59b429b
13 changed files with 868 additions and 603 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

732
drivers/block/rbd.c
View File

File diff suppressed because it is too large Load Diff

4
drivers/block/rbd_types.h
View File

@ -41,10 +41,6 @@
#define RBD_HEADER_SIGNATURE "RBD"
#define RBD_HEADER_VERSION "001.005"
struct rbd_info {
__le64 max_id;
} __attribute__ ((packed));
struct rbd_image_snap_ondisk {
__le64 id;
__le64 image_size;

11
fs/ceph/inode.c
View File

@ -677,18 +677,19 @@ static int fill_inode(struct inode *inode,
case S_IFLNK:
inode->i_op = &ceph_symlink_iops;
if (!ci->i_symlink) {
int symlen = iinfo->symlink_len;
u32 symlen = iinfo->symlink_len;
char *sym;
BUG_ON(symlen != inode->i_size);
spin_unlock(&ci->i_ceph_lock);
err = -EINVAL;
if (WARN_ON(symlen != inode->i_size))
goto out;
err = -ENOMEM;
sym = kmalloc(symlen+1, GFP_NOFS);
sym = kstrndup(iinfo->symlink, symlen, GFP_NOFS);
if (!sym)
goto out;
memcpy(sym, iinfo->symlink, symlen);
sym[symlen] = 0;
spin_lock(&ci->i_ceph_lock);
if (!ci->i_symlink)

7
fs/ceph/mds_client.c
View File

@ -402,7 +402,7 @@ static struct ceph_mds_session *register_session(struct ceph_mds_client *mdsc,
spin_lock_init(&s->s_gen_ttl_lock);
s->s_cap_gen = 0;
s->s_cap_ttl = 0;
s->s_cap_ttl = jiffies - 1;
spin_lock_init(&s->s_cap_lock);
s->s_renew_requested = 0;
@ -1083,8 +1083,7 @@ static void renewed_caps(struct ceph_mds_client *mdsc,
int wake = 0;
spin_lock(&session->s_cap_lock);
was_stale = is_renew && (session->s_cap_ttl == 0 ||
time_after_eq(jiffies, session->s_cap_ttl));
was_stale = is_renew && time_after_eq(jiffies, session->s_cap_ttl);
session->s_cap_ttl = session->s_renew_requested +
mdsc->mdsmap->m_session_timeout*HZ;
@ -2332,7 +2331,7 @@ static void handle_session(struct ceph_mds_session *session,
session->s_mds);
spin_lock(&session->s_gen_ttl_lock);
session->s_cap_gen++;
session->s_cap_ttl = 0;
session->s_cap_ttl = jiffies - 1;
spin_unlock(&session->s_gen_ttl_lock);
send_renew_caps(mdsc, session);
break;

2
fs/ceph/snap.c
View File

@ -331,7 +331,7 @@ static int build_snap_context(struct ceph_snap_realm *realm)
/* alloc new snap context */
err = -ENOMEM;
if (num > ULONG_MAX / sizeof(u64) - sizeof(*snapc))
if (num > (ULONG_MAX - sizeof(*snapc)) / sizeof(u64))
goto fail;
snapc = kzalloc(sizeof(*snapc) + num*sizeof(u64), GFP_NOFS);
if (!snapc)

19
fs/ceph/super.c
View File

@ -130,10 +130,12 @@ enum {
Opt_nodirstat,
Opt_rbytes,
Opt_norbytes,
Opt_asyncreaddir,
Opt_noasyncreaddir,
Opt_dcache,
Opt_nodcache,
Opt_ino32,
Opt_noino32,
};
static match_table_t fsopt_tokens = {
@ -153,10 +155,12 @@ static match_table_t fsopt_tokens = {
{Opt_nodirstat, "nodirstat"},
{Opt_rbytes, "rbytes"},
{Opt_norbytes, "norbytes"},
{Opt_asyncreaddir, "asyncreaddir"},
{Opt_noasyncreaddir, "noasyncreaddir"},
{Opt_dcache, "dcache"},
{Opt_nodcache, "nodcache"},
{Opt_ino32, "ino32"},
{Opt_noino32, "noino32"},
{-1, NULL}
};
@ -232,6 +236,9 @@ static int parse_fsopt_token(char *c, void *private)
case Opt_norbytes:
fsopt->flags &= ~CEPH_MOUNT_OPT_RBYTES;
break;
case Opt_asyncreaddir:
fsopt->flags &= ~CEPH_MOUNT_OPT_NOASYNCREADDIR;
break;
case Opt_noasyncreaddir:
fsopt->flags |= CEPH_MOUNT_OPT_NOASYNCREADDIR;
break;
@ -244,6 +251,9 @@ static int parse_fsopt_token(char *c, void *private)
case Opt_ino32:
fsopt->flags |= CEPH_MOUNT_OPT_INO32;
break;
case Opt_noino32:
fsopt->flags &= ~CEPH_MOUNT_OPT_INO32;
break;
default:
BUG_ON(token);
}
@ -334,10 +344,12 @@ static int parse_mount_options(struct ceph_mount_options **pfsopt,
*path += 2;
dout("server path '%s'\n", *path);
err = ceph_parse_options(popt, options, dev_name, dev_name_end,
*popt = ceph_parse_options(options, dev_name, dev_name_end,
parse_fsopt_token, (void *)fsopt);
if (err)
if (IS_ERR(*popt)) {
err = PTR_ERR(*popt);
goto out;
}
/* success */
*pfsopt = fsopt;
@ -926,6 +938,7 @@ static int __init init_ceph(void)
if (ret)
goto out;
ceph_xattr_init();
ret = register_filesystem(&ceph_fs_type);
if (ret)
goto out_icache;
@ -935,6 +948,7 @@ static int __init init_ceph(void)
return 0;
out_icache:
ceph_xattr_exit();
destroy_caches();
out:
return ret;
@ -944,6 +958,7 @@ static void __exit exit_ceph(void)
{
dout("exit_ceph\n");
unregister_filesystem(&ceph_fs_type);
ceph_xattr_exit();
destroy_caches();
}

4
fs/ceph/super.h
View File

@ -367,7 +367,7 @@ static inline u32 ceph_ino_to_ino32(__u64 vino)
u32 ino = vino & 0xffffffff;
ino ^= vino >> 32;
if (!ino)
ino = 1;
ino = 2;
return ino;
}
@ -733,6 +733,8 @@ extern ssize_t ceph_listxattr(struct dentry *, char *, size_t);
extern int ceph_removexattr(struct dentry *, const char *);
extern void __ceph_build_xattrs_blob(struct ceph_inode_info *ci);
extern void __ceph_destroy_xattrs(struct ceph_inode_info *ci);
extern void __init ceph_xattr_init(void);
extern void ceph_xattr_exit(void);
/* caps.c */
extern const char *ceph_cap_string(int c);

202
fs/ceph/xattr.c
View File

@ -8,9 +8,12 @@
#include <linux/xattr.h>
#include <linux/slab.h>
#define XATTR_CEPH_PREFIX "ceph."
#define XATTR_CEPH_PREFIX_LEN (sizeof (XATTR_CEPH_PREFIX) - 1)
static bool ceph_is_valid_xattr(const char *name)
{
return !strncmp(name, "ceph.", 5) ||
return !strncmp(name, XATTR_CEPH_PREFIX, XATTR_CEPH_PREFIX_LEN) ||
!strncmp(name, XATTR_SECURITY_PREFIX,
XATTR_SECURITY_PREFIX_LEN) ||
!strncmp(name, XATTR_TRUSTED_PREFIX, XATTR_TRUSTED_PREFIX_LEN) ||
@ -21,79 +24,91 @@ static bool ceph_is_valid_xattr(const char *name)
* These define virtual xattrs exposing the recursive directory
* statistics and layout metadata.
*/
struct ceph_vxattr_cb {
bool readonly;
struct ceph_vxattr {
char *name;
size_t name_size; /* strlen(name) + 1 (for '\0') */
size_t (*getxattr_cb)(struct ceph_inode_info *ci, char *val,
size_t size);
bool readonly;
};
/* directories */
static size_t ceph_vxattrcb_entries(struct ceph_inode_info *ci, char *val,
static size_t ceph_vxattrcb_dir_entries(struct ceph_inode_info *ci, char *val,
size_t size)
{
return snprintf(val, size, "%lld", ci->i_files + ci->i_subdirs);
}
static size_t ceph_vxattrcb_files(struct ceph_inode_info *ci, char *val,
static size_t ceph_vxattrcb_dir_files(struct ceph_inode_info *ci, char *val,
size_t size)
{
return snprintf(val, size, "%lld", ci->i_files);
}
static size_t ceph_vxattrcb_subdirs(struct ceph_inode_info *ci, char *val,
static size_t ceph_vxattrcb_dir_subdirs(struct ceph_inode_info *ci, char *val,
size_t size)
{
return snprintf(val, size, "%lld", ci->i_subdirs);
}
static size_t ceph_vxattrcb_rentries(struct ceph_inode_info *ci, char *val,
static size_t ceph_vxattrcb_dir_rentries(struct ceph_inode_info *ci, char *val,
size_t size)
{
return snprintf(val, size, "%lld", ci->i_rfiles + ci->i_rsubdirs);
}
static size_t ceph_vxattrcb_rfiles(struct ceph_inode_info *ci, char *val,
static size_t ceph_vxattrcb_dir_rfiles(struct ceph_inode_info *ci, char *val,
size_t size)
{
return snprintf(val, size, "%lld", ci->i_rfiles);
}
static size_t ceph_vxattrcb_rsubdirs(struct ceph_inode_info *ci, char *val,
static size_t ceph_vxattrcb_dir_rsubdirs(struct ceph_inode_info *ci, char *val,
size_t size)
{
return snprintf(val, size, "%lld", ci->i_rsubdirs);
}
static size_t ceph_vxattrcb_rbytes(struct ceph_inode_info *ci, char *val,
static size_t ceph_vxattrcb_dir_rbytes(struct ceph_inode_info *ci, char *val,
size_t size)
{
return snprintf(val, size, "%lld", ci->i_rbytes);
}
static size_t ceph_vxattrcb_rctime(struct ceph_inode_info *ci, char *val,
static size_t ceph_vxattrcb_dir_rctime(struct ceph_inode_info *ci, char *val,
size_t size)
{
return snprintf(val, size, "%ld.%ld", (long)ci->i_rctime.tv_sec,
return snprintf(val, size, "%ld.09%ld", (long)ci->i_rctime.tv_sec,
(long)ci->i_rctime.tv_nsec);
}
static struct ceph_vxattr_cb ceph_dir_vxattrs[] = {
{ true, "ceph.dir.entries", ceph_vxattrcb_entries},
{ true, "ceph.dir.files", ceph_vxattrcb_files},
{ true, "ceph.dir.subdirs", ceph_vxattrcb_subdirs},
{ true, "ceph.dir.rentries", ceph_vxattrcb_rentries},
{ true, "ceph.dir.rfiles", ceph_vxattrcb_rfiles},
{ true, "ceph.dir.rsubdirs", ceph_vxattrcb_rsubdirs},
{ true, "ceph.dir.rbytes", ceph_vxattrcb_rbytes},
{ true, "ceph.dir.rctime", ceph_vxattrcb_rctime},
{ true, NULL, NULL }
#define CEPH_XATTR_NAME(_type, _name) XATTR_CEPH_PREFIX #_type "." #_name
#define XATTR_NAME_CEPH(_type, _name) \
{ \
.name = CEPH_XATTR_NAME(_type, _name), \
.name_size = sizeof (CEPH_XATTR_NAME(_type, _name)), \
.getxattr_cb = ceph_vxattrcb_ ## _type ## _ ## _name, \
.readonly = true, \
}
static struct ceph_vxattr ceph_dir_vxattrs[] = {
XATTR_NAME_CEPH(dir, entries),
XATTR_NAME_CEPH(dir, files),
XATTR_NAME_CEPH(dir, subdirs),
XATTR_NAME_CEPH(dir, rentries),
XATTR_NAME_CEPH(dir, rfiles),
XATTR_NAME_CEPH(dir, rsubdirs),
XATTR_NAME_CEPH(dir, rbytes),
XATTR_NAME_CEPH(dir, rctime),
{ 0 } /* Required table terminator */
};
static size_t ceph_dir_vxattrs_name_size; /* total size of all names */
/* files */
static size_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val,
static size_t ceph_vxattrcb_file_layout(struct ceph_inode_info *ci, char *val,
size_t size)
{
int ret;
@ -103,21 +118,32 @@ static size_t ceph_vxattrcb_layout(struct ceph_inode_info *ci, char *val,
(unsigned long long)ceph_file_layout_su(ci->i_layout),
(unsigned long long)ceph_file_layout_stripe_count(ci->i_layout),
(unsigned long long)ceph_file_layout_object_size(ci->i_layout));
if (ceph_file_layout_pg_preferred(ci->i_layout))
ret += snprintf(val + ret, size, "preferred_osd=%lld\n",
if (ceph_file_layout_pg_preferred(ci->i_layout) >= 0) {
val += ret;
size -= ret;
ret += snprintf(val, size, "preferred_osd=%lld\n",
(unsigned long long)ceph_file_layout_pg_preferred(
ci->i_layout));
}
return ret;
}
static struct ceph_vxattr_cb ceph_file_vxattrs[] = {
{ true, "ceph.file.layout", ceph_vxattrcb_layout},
static struct ceph_vxattr ceph_file_vxattrs[] = {
XATTR_NAME_CEPH(file, layout),
/* The following extended attribute name is deprecated */
{ true, "ceph.layout", ceph_vxattrcb_layout},
{ true, NULL, NULL }
{
.name = XATTR_CEPH_PREFIX "layout",
.name_size = sizeof (XATTR_CEPH_PREFIX "layout"),
.getxattr_cb = ceph_vxattrcb_file_layout,
.readonly = true,
},
{ 0 } /* Required table terminator */
};
static size_t ceph_file_vxattrs_name_size; /* total size of all names */
static struct ceph_vxattr_cb *ceph_inode_vxattrs(struct inode *inode)
static struct ceph_vxattr *ceph_inode_vxattrs(struct inode *inode)
{
if (S_ISDIR(inode->i_mode))
return ceph_dir_vxattrs;
@ -126,14 +152,59 @@ static struct ceph_vxattr_cb *ceph_inode_vxattrs(struct inode *inode)
return NULL;
}
static struct ceph_vxattr_cb *ceph_match_vxattr(struct ceph_vxattr_cb *vxattr,
static size_t ceph_vxattrs_name_size(struct ceph_vxattr *vxattrs)
{
if (vxattrs == ceph_dir_vxattrs)
return ceph_dir_vxattrs_name_size;
if (vxattrs == ceph_file_vxattrs)
return ceph_file_vxattrs_name_size;
BUG();
return 0;
}
/*
* Compute the aggregate size (including terminating '\0') of all
* virtual extended attribute names in the given vxattr table.
*/
static size_t __init vxattrs_name_size(struct ceph_vxattr *vxattrs)
{
struct ceph_vxattr *vxattr;
size_t size = 0;
for (vxattr = vxattrs; vxattr->name; vxattr++)
size += vxattr->name_size;
return size;
}
/* Routines called at initialization and exit time */
void __init ceph_xattr_init(void)
{
ceph_dir_vxattrs_name_size = vxattrs_name_size(ceph_dir_vxattrs);
ceph_file_vxattrs_name_size = vxattrs_name_size(ceph_file_vxattrs);
}
void ceph_xattr_exit(void)
{
ceph_dir_vxattrs_name_size = 0;
ceph_file_vxattrs_name_size = 0;
}
static struct ceph_vxattr *ceph_match_vxattr(struct inode *inode,
const char *name)
{
do {
if (strcmp(vxattr->name, name) == 0)
return vxattr;
vxattr++;
} while (vxattr->name);
struct ceph_vxattr *vxattr = ceph_inode_vxattrs(inode);
if (vxattr) {
while (vxattr->name) {
if (!strcmp(vxattr->name, name))
return vxattr;
vxattr++;
}
}
return NULL;
}
@ -502,17 +573,15 @@ ssize_t ceph_getxattr(struct dentry *dentry, const char *name, void *value,
{
struct inode *inode = dentry->d_inode;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode);
int err;
struct ceph_inode_xattr *xattr;
struct ceph_vxattr_cb *vxattr = NULL;
struct ceph_vxattr *vxattr = NULL;
if (!ceph_is_valid_xattr(name))
return -ENODATA;
/* let's see if a virtual xattr was requested */
if (vxattrs)
vxattr = ceph_match_vxattr(vxattrs, name);
vxattr = ceph_match_vxattr(inode, name);
spin_lock(&ci->i_ceph_lock);
dout("getxattr %p ver=%lld index_ver=%lld\n", inode,
@ -568,7 +637,7 @@ ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size)
{
struct inode *inode = dentry->d_inode;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode);
struct ceph_vxattr *vxattrs = ceph_inode_vxattrs(inode);
u32 vir_namelen = 0;
u32 namelen;
int err;
@ -596,11 +665,12 @@ ssize_t ceph_listxattr(struct dentry *dentry, char *names, size_t size)
goto out;
list_xattr:
vir_namelen = 0;
/* include virtual dir xattrs */
if (vxattrs)
for (i = 0; vxattrs[i].name; i++)
vir_namelen += strlen(vxattrs[i].name) + 1;
/*
* Start with virtual dir xattr names (if any) (including
* terminating '\0' characters for each).
*/
vir_namelen = ceph_vxattrs_name_size(vxattrs);
/* adding 1 byte per each variable due to the null termination */
namelen = vir_namelen + ci->i_xattrs.names_size + ci->i_xattrs.count;
err = -ERANGE;
@ -698,17 +768,17 @@ int ceph_setxattr(struct dentry *dentry, const char *name,
const void *value, size_t size, int flags)
{
struct inode *inode = dentry->d_inode;
struct ceph_vxattr *vxattr;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode);
int issued;
int err;
int dirty;
int name_len = strlen(name);
int val_len = size;
char *newname = NULL;
char *newval = NULL;
struct ceph_inode_xattr *xattr = NULL;
int issued;
int required_blob_size;
int dirty;
if (ceph_snap(inode) != CEPH_NOSNAP)
return -EROFS;
@ -716,12 +786,9 @@ int ceph_setxattr(struct dentry *dentry, const char *name,
if (!ceph_is_valid_xattr(name))
return -EOPNOTSUPP;
if (vxattrs) {
struct ceph_vxattr_cb *vxattr =
ceph_match_vxattr(vxattrs, name);
if (vxattr && vxattr->readonly)
return -EOPNOTSUPP;
}
vxattr = ceph_match_vxattr(inode, name);
if (vxattr && vxattr->readonly)
return -EOPNOTSUPP;
/* preallocate memory for xattr name, value, index node */
err = -ENOMEM;
@ -730,11 +797,9 @@ int ceph_setxattr(struct dentry *dentry, const char *name,
goto out;
if (val_len) {
newval = kmalloc(val_len + 1, GFP_NOFS);
newval = kmemdup(value, val_len, GFP_NOFS);
if (!newval)
goto out;
memcpy(newval, value, val_len);
newval[val_len] = '\0';
}
xattr = kmalloc(sizeof(struct ceph_inode_xattr), GFP_NOFS);
@ -744,6 +809,7 @@ int ceph_setxattr(struct dentry *dentry, const char *name,
spin_lock(&ci->i_ceph_lock);
retry:
issued = __ceph_caps_issued(ci, NULL);
dout("setxattr %p issued %s\n", inode, ceph_cap_string(issued));
if (!(issued & CEPH_CAP_XATTR_EXCL))
goto do_sync;
__build_xattrs(inode);
@ -752,7 +818,7 @@ retry:
if (!ci->i_xattrs.prealloc_blob ||
required_blob_size > ci->i_xattrs.prealloc_blob->alloc_len) {
struct ceph_buffer *blob = NULL;
struct ceph_buffer *blob;
spin_unlock(&ci->i_ceph_lock);
dout(" preaallocating new blob size=%d\n", required_blob_size);
@ -766,12 +832,13 @@ retry:
goto retry;
}
dout("setxattr %p issued %s\n", inode, ceph_cap_string(issued));
err = __set_xattr(ci, newname, name_len, newval,
val_len, 1, 1, 1, &xattr);
dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL);
ci->i_xattrs.dirty = true;
inode->i_ctime = CURRENT_TIME;
spin_unlock(&ci->i_ceph_lock);
if (dirty)
__mark_inode_dirty(inode, dirty);
@ -816,8 +883,8 @@ static int ceph_send_removexattr(struct dentry *dentry, const char *name)
int ceph_removexattr(struct dentry *dentry, const char *name)
{
struct inode *inode = dentry->d_inode;
struct ceph_vxattr *vxattr;
struct ceph_inode_info *ci = ceph_inode(inode);
struct ceph_vxattr_cb *vxattrs = ceph_inode_vxattrs(inode);
int issued;
int err;
int required_blob_size;
@ -829,22 +896,19 @@ int ceph_removexattr(struct dentry *dentry, const char *name)
if (!ceph_is_valid_xattr(name))
return -EOPNOTSUPP;
if (vxattrs) {
struct ceph_vxattr_cb *vxattr =
ceph_match_vxattr(vxattrs, name);
if (vxattr && vxattr->readonly)
return -EOPNOTSUPP;
}
vxattr = ceph_match_vxattr(inode, name);
if (vxattr && vxattr->readonly)
return -EOPNOTSUPP;
err = -ENOMEM;
spin_lock(&ci->i_ceph_lock);
__build_xattrs(inode);
retry:
issued = __ceph_caps_issued(ci, NULL);
dout("removexattr %p issued %s\n", inode, ceph_cap_string(issued));
if (!(issued & CEPH_CAP_XATTR_EXCL))
goto do_sync;
__build_xattrs(inode);
required_blob_size = __get_required_blob_size(ci, 0, 0);
@ -865,10 +929,10 @@ retry:
}
err = __remove_xattr_by_name(ceph_inode(inode), name);
dirty = __ceph_mark_dirty_caps(ci, CEPH_CAP_XATTR_EXCL);
ci->i_xattrs.dirty = true;
inode->i_ctime = CURRENT_TIME;
spin_unlock(&ci->i_ceph_lock);
if (dirty)
__mark_inode_dirty(inode, dirty);

2
include/linux/ceph/libceph.h
View File

@ -208,7 +208,7 @@ extern struct kmem_cache *ceph_cap_cachep;
extern struct kmem_cache *ceph_dentry_cachep;
extern struct kmem_cache *ceph_file_cachep;
extern int ceph_parse_options(struct ceph_options **popt, char *options,
extern struct ceph_options *ceph_parse_options(char *options,
const char *dev_name, const char *dev_name_end,
int (*parse_extra_token)(char *c, void *private),
void *private);

5
include/linux/ceph/messenger.h
View File

@ -14,8 +14,6 @@
struct ceph_msg;
struct ceph_connection;
extern struct workqueue_struct *ceph_msgr_wq; /* receive work queue */
/*
* Ceph defines these callbacks for handling connection events.
*/
@ -54,7 +52,6 @@ struct ceph_connection_operations {
struct ceph_messenger {
struct ceph_entity_inst inst; /* my name+address */
struct ceph_entity_addr my_enc_addr;
struct page *zero_page; /* used in certain error cases */
bool nocrc;
@ -101,7 +98,7 @@ struct ceph_msg {
struct ceph_msg_pos {
int page, page_pos; /* which page; offset in page */
int data_pos; /* offset in data payload */
int did_page_crc; /* true if we've calculated crc for current page */
bool did_page_crc; /* true if we've calculated crc for current page */
};
/* ceph connection fault delay defaults, for exponential backoff */

26
net/ceph/ceph_common.c
View File

@ -201,7 +201,9 @@ enum {
Opt_ip,
Opt_last_string,
/* string args above */
Opt_share,
Opt_noshare,
Opt_crc,
Opt_nocrc,
};
@ -217,7 +219,9 @@ static match_table_t opt_tokens = {
{Opt_key, "key=%s"},
{Opt_ip, "ip=%s"},
/* string args above */
{Opt_share, "share"},
{Opt_noshare, "noshare"},
{Opt_crc, "crc"},
{Opt_nocrc, "nocrc"},
{-1, NULL}
};
@ -277,10 +281,11 @@ out:
return err;
}
int ceph_parse_options(struct ceph_options **popt, char *options,
const char *dev_name, const char *dev_name_end,
int (*parse_extra_token)(char *c, void *private),
void *private)
struct ceph_options *
ceph_parse_options(char *options, const char *dev_name,
const char *dev_name_end,
int (*parse_extra_token)(char *c, void *private),
void *private)
{
struct ceph_options *opt;
const char *c;
@ -289,7 +294,7 @@ int ceph_parse_options(struct ceph_options **popt, char *options,
opt = kzalloc(sizeof(*opt), GFP_KERNEL);
if (!opt)
return err;
return ERR_PTR(-ENOMEM);
opt->mon_addr = kcalloc(CEPH_MAX_MON, sizeof(*opt->mon_addr),
GFP_KERNEL);
if (!opt->mon_addr)
@ -398,10 +403,16 @@ int ceph_parse_options(struct ceph_options **popt, char *options,
opt->mount_timeout = intval;
break;
case Opt_share:
opt->flags &= ~CEPH_OPT_NOSHARE;
break;
case Opt_noshare:
opt->flags |= CEPH_OPT_NOSHARE;
break;
case Opt_crc:
opt->flags &= ~CEPH_OPT_NOCRC;
break;
case Opt_nocrc:
opt->flags |= CEPH_OPT_NOCRC;
break;
@ -412,12 +423,11 @@ int ceph_parse_options(struct ceph_options **popt, char *options,
}
/* success */
*popt = opt;
return 0;
return opt;
out:
ceph_destroy_options(opt);
return err;
return ERR_PTR(err);
}
EXPORT_SYMBOL(ceph_parse_options);

454
net/ceph/messenger.c
View File

@ -38,48 +38,54 @@ static char tag_keepalive = CEPH_MSGR_TAG_KEEPALIVE;
static struct lock_class_key socket_class;
#endif
/*
* When skipping (ignoring) a block of input we read it into a "skip
* buffer," which is this many bytes in size.
*/
#define SKIP_BUF_SIZE 1024
static void queue_con(struct ceph_connection *con);
static void con_work(struct work_struct *);
static void ceph_fault(struct ceph_connection *con);
/*
* nicely render a sockaddr as a string.
* Nicely render a sockaddr as a string. An array of formatted
* strings is used, to approximate reentrancy.
*/
#define MAX_ADDR_STR 20
#define MAX_ADDR_STR_LEN 60
static char addr_str[MAX_ADDR_STR][MAX_ADDR_STR_LEN];
static DEFINE_SPINLOCK(addr_str_lock);
static int last_addr_str;
#define ADDR_STR_COUNT_LOG 5 /* log2(# address strings in array) */
#define ADDR_STR_COUNT (1 << ADDR_STR_COUNT_LOG)
#define ADDR_STR_COUNT_MASK (ADDR_STR_COUNT - 1)
#define MAX_ADDR_STR_LEN 64 /* 54 is enough */
static char addr_str[ADDR_STR_COUNT][MAX_ADDR_STR_LEN];
static atomic_t addr_str_seq = ATOMIC_INIT(0);
static struct page *zero_page; /* used in certain error cases */
const char *ceph_pr_addr(const struct sockaddr_storage *ss)
{
int i;
char *s;
struct sockaddr_in *in4 = (void *)ss;
struct sockaddr_in6 *in6 = (void *)ss;
struct sockaddr_in *in4 = (struct sockaddr_in *) ss;
struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) ss;
spin_lock(&addr_str_lock);
i = last_addr_str++;
if (last_addr_str == MAX_ADDR_STR)
last_addr_str = 0;
spin_unlock(&addr_str_lock);
i = atomic_inc_return(&addr_str_seq) & ADDR_STR_COUNT_MASK;
s = addr_str[i];
switch (ss->ss_family) {
case AF_INET:
snprintf(s, MAX_ADDR_STR_LEN, "%pI4:%u", &in4->sin_addr,
(unsigned int)ntohs(in4->sin_port));
snprintf(s, MAX_ADDR_STR_LEN, "%pI4:%hu", &in4->sin_addr,
ntohs(in4->sin_port));
break;
case AF_INET6:
snprintf(s, MAX_ADDR_STR_LEN, "[%pI6c]:%u", &in6->sin6_addr,
(unsigned int)ntohs(in6->sin6_port));
snprintf(s, MAX_ADDR_STR_LEN, "[%pI6c]:%hu", &in6->sin6_addr,
ntohs(in6->sin6_port));
break;
default:
snprintf(s, MAX_ADDR_STR_LEN, "(unknown sockaddr family %d)",
(int)ss->ss_family);
snprintf(s, MAX_ADDR_STR_LEN, "(unknown sockaddr family %hu)",
ss->ss_family);
}
return s;
@ -95,22 +101,43 @@ static void encode_my_addr(struct ceph_messenger *msgr)
/*
* work queue for all reading and writing to/from the socket.
*/
struct workqueue_struct *ceph_msgr_wq;
static struct workqueue_struct *ceph_msgr_wq;
void _ceph_msgr_exit(void)
{
if (ceph_msgr_wq) {
destroy_workqueue(ceph_msgr_wq);
ceph_msgr_wq = NULL;
}
BUG_ON(zero_page == NULL);
kunmap(zero_page);
page_cache_release(zero_page);
zero_page = NULL;
}
int ceph_msgr_init(void)
{
BUG_ON(zero_page != NULL);
zero_page = ZERO_PAGE(0);
page_cache_get(zero_page);
ceph_msgr_wq = alloc_workqueue("ceph-msgr", WQ_NON_REENTRANT, 0);
if (!ceph_msgr_wq) {
pr_err("msgr_init failed to create workqueue\n");
return -ENOMEM;
}
return 0;
if (ceph_msgr_wq)
return 0;
pr_err("msgr_init failed to create workqueue\n");
_ceph_msgr_exit();
return -ENOMEM;
}
EXPORT_SYMBOL(ceph_msgr_init);
void ceph_msgr_exit(void)
{
destroy_workqueue(ceph_msgr_wq);
BUG_ON(ceph_msgr_wq == NULL);
_ceph_msgr_exit();
}
EXPORT_SYMBOL(ceph_msgr_exit);
@ -128,8 +155,8 @@ EXPORT_SYMBOL(ceph_msgr_flush);
/* data available on socket, or listen socket received a connect */
static void ceph_data_ready(struct sock *sk, int count_unused)
{
struct ceph_connection *con =
(struct ceph_connection *)sk->sk_user_data;
struct ceph_connection *con = sk->sk_user_data;
if (sk->sk_state != TCP_CLOSE_WAIT) {
dout("ceph_data_ready on %p state = %lu, queueing work\n",
con, con->state);
@ -140,26 +167,30 @@ static void ceph_data_ready(struct sock *sk, int count_unused)
/* socket has buffer space for writing */
static void ceph_write_space(struct sock *sk)
{
struct ceph_connection *con =
(struct ceph_connection *)sk->sk_user_data;
struct ceph_connection *con = sk->sk_user_data;
/* only queue to workqueue if there is data we want to write. */
/* only queue to workqueue if there is data we want to write,
* and there is sufficient space in the socket buffer to accept
* more data. clear SOCK_NOSPACE so that ceph_write_space()
* doesn't get called again until try_write() fills the socket
* buffer. See net/ipv4/tcp_input.c:tcp_check_space()
* and net/core/stream.c:sk_stream_write_space().
*/
if (test_bit(WRITE_PENDING, &con->state)) {
dout("ceph_write_space %p queueing write work\n", con);
queue_con(con);
if (sk_stream_wspace(sk) >= sk_stream_min_wspace(sk)) {
dout("ceph_write_space %p queueing write work\n", con);
clear_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
queue_con(con);
}
} else {
dout("ceph_write_space %p nothing to write\n", con);
}
/* since we have our own write_space, clear the SOCK_NOSPACE flag */
clear_bit(SOCK_NOSPACE, &sk->sk_socket->flags);
}
/* socket's state has changed */
static void ceph_state_change(struct sock *sk)
{
struct ceph_connection *con =
(struct ceph_connection *)sk->sk_user_data;
struct ceph_connection *con = sk->sk_user_data;
dout("ceph_state_change %p state = %lu sk_state = %u\n",
con, con->state, sk->sk_state);
@ -184,6 +215,8 @@ static void ceph_state_change(struct sock *sk)
dout("ceph_state_change TCP_ESTABLISHED\n");
queue_con(con);
break;
default: /* Everything else is uninteresting */
break;
}
}
@ -194,7 +227,7 @@ static void set_sock_callbacks(struct socket *sock,
struct ceph_connection *con)
{
struct sock *sk = sock->sk;
sk->sk_user_data = (void *)con;
sk->sk_user_data = con;
sk->sk_data_ready = ceph_data_ready;
sk->sk_write_space = ceph_write_space;
sk->sk_state_change = ceph_state_change;
@ -208,7 +241,7 @@ static void set_sock_callbacks(struct socket *sock,
/*
* initiate connection to a remote socket.
*/
static struct socket *ceph_tcp_connect(struct ceph_connection *con)
static int ceph_tcp_connect(struct ceph_connection *con)
{
struct sockaddr_storage *paddr = &con->peer_addr.in_addr;
struct socket *sock;
@ -218,8 +251,7 @@ static struct socket *ceph_tcp_connect(struct ceph_connection *con)
ret = sock_create_kern(con->peer_addr.in_addr.ss_family, SOCK_STREAM,
IPPROTO_TCP, &sock);
if (ret)
return ERR_PTR(ret);
con->sock = sock;
return ret;
sock->sk->sk_allocation = GFP_NOFS;
#ifdef CONFIG_LOCKDEP
@ -236,19 +268,17 @@ static struct socket *ceph_tcp_connect(struct ceph_connection *con)
dout("connect %s EINPROGRESS sk_state = %u\n",
ceph_pr_addr(&con->peer_addr.in_addr),
sock->sk->sk_state);
ret = 0;
}
if (ret < 0) {
} else if (ret < 0) {
pr_err("connect %s error %d\n",
ceph_pr_addr(&con->peer_addr.in_addr), ret);
sock_release(sock);
con->sock = NULL;
con->error_msg = "connect error";
}
if (ret < 0)
return ERR_PTR(ret);
return sock;
return ret;
}
con->sock = sock;
return 0;
}
static int ceph_tcp_recvmsg(struct socket *sock, void *buf, size_t len)
@ -284,6 +314,19 @@ static int ceph_tcp_sendmsg(struct socket *sock, struct kvec *iov,
return r;
}
static int ceph_tcp_sendpage(struct socket *sock, struct page *page,
int offset, size_t size, int more)
{
int flags = MSG_DONTWAIT | MSG_NOSIGNAL | (more ? MSG_MORE : MSG_EOR);
int ret;
ret = kernel_sendpage(sock, page, offset, size, flags);
if (ret == -EAGAIN)
ret = 0;
return ret;
}
/*
* Shutdown/close the socket for the given connection.
@ -391,22 +434,23 @@ bool ceph_con_opened(struct ceph_connection *con)
*/
struct ceph_connection *ceph_con_get(struct ceph_connection *con)
{
dout("con_get %p nref = %d -> %d\n", con,
atomic_read(&con->nref), atomic_read(&con->nref) + 1);
if (atomic_inc_not_zero(&con->nref))
return con;
return NULL;
int nref = __atomic_add_unless(&con->nref, 1, 0);
dout("con_get %p nref = %d -> %d\n", con, nref, nref + 1);
return nref ? con : NULL;
}
void ceph_con_put(struct ceph_connection *con)
{
dout("con_put %p nref = %d -> %d\n", con,
atomic_read(&con->nref), atomic_read(&con->nref) - 1);
BUG_ON(atomic_read(&con->nref) == 0);
if (atomic_dec_and_test(&con->nref)) {
int nref = atomic_dec_return(&con->nref);
BUG_ON(nref < 0);
if (nref == 0) {
BUG_ON(con->sock);
kfree(con);
}
dout("con_put %p nref = %d -> %d\n", con, nref + 1, nref);
}
/*
@ -442,14 +486,35 @@ static u32 get_global_seq(struct ceph_messenger *msgr, u32 gt)
return ret;
}
static void ceph_con_out_kvec_reset(struct ceph_connection *con)
{
con->out_kvec_left = 0;
con->out_kvec_bytes = 0;
con->out_kvec_cur = &con->out_kvec[0];
}
static void ceph_con_out_kvec_add(struct ceph_connection *con,
size_t size, void *data)
{
int index;
index = con->out_kvec_left;
BUG_ON(index >= ARRAY_SIZE(con->out_kvec));
con->out_kvec[index].iov_len = size;
con->out_kvec[index].iov_base = data;
con->out_kvec_left++;
con->out_kvec_bytes += size;
}
/*
* Prepare footer for currently outgoing message, and finish things
* off. Assumes out_kvec* are already valid.. we just add on to the end.
*/
static void prepare_write_message_footer(struct ceph_connection *con, int v)
static void prepare_write_message_footer(struct ceph_connection *con)
{
struct ceph_msg *m = con->out_msg;
int v = con->out_kvec_left;
dout("prepare_write_message_footer %p\n", con);
con->out_kvec_is_msg = true;
@ -467,9 +532,9 @@ static void prepare_write_message_footer(struct ceph_connection *con, int v)
static void prepare_write_message(struct ceph_connection *con)
{
struct ceph_msg *m;
int v = 0;
u32 crc;
con->out_kvec_bytes = 0;
ceph_con_out_kvec_reset(con);
con->out_kvec_is_msg = true;
con->out_msg_done = false;
@ -477,16 +542,13 @@ static void prepare_write_message(struct ceph_connection *con)
* TCP packet that's a good thing. */
if (con->in_seq > con->in_seq_acked) {
con->in_seq_acked = con->in_seq;
con->out_kvec[v].iov_base = &tag_ack;
con->out_kvec[v++].iov_len = 1;
ceph_con_out_kvec_add(con, sizeof (tag_ack), &tag_ack);
con->out_temp_ack = cpu_to_le64(con->in_seq_acked);
con->out_kvec[v].iov_base = &con->out_temp_ack;
con->out_kvec[v++].iov_len = sizeof(con->out_temp_ack);
con->out_kvec_bytes = 1 + sizeof(con->out_temp_ack);
ceph_con_out_kvec_add(con, sizeof (con->out_temp_ack),
&con->out_temp_ack);
}
m = list_first_entry(&con->out_queue,
struct ceph_msg, list_head);
m = list_first_entry(&con->out_queue, struct ceph_msg, list_head);
con->out_msg = m;
/* put message on sent list */
@ -510,30 +572,26 @@ static void prepare_write_message(struct ceph_connection *con)
BUG_ON(le32_to_cpu(m->hdr.front_len) != m->front.iov_len);
/* tag + hdr + front + middle */
con->out_kvec[v].iov_base = &tag_msg;
con->out_kvec[v++].iov_len = 1;
con->out_kvec[v].iov_base = &m->hdr;
con->out_kvec[v++].iov_len = sizeof(m->hdr);
con->out_kvec[v++] = m->front;
ceph_con_out_kvec_add(con, sizeof (tag_msg), &tag_msg);
ceph_con_out_kvec_add(con, sizeof (m->hdr), &m->hdr);
ceph_con_out_kvec_add(con, m->front.iov_len, m->front.iov_base);
if (m->middle)
con->out_kvec[v++] = m->middle->vec;
con->out_kvec_left = v;
con->out_kvec_bytes += 1 + sizeof(m->hdr) + m->front.iov_len +
(m->middle ? m->middle->vec.iov_len : 0);
con->out_kvec_cur = con->out_kvec;
ceph_con_out_kvec_add(con, m->middle->vec.iov_len,
m->middle->vec.iov_base);
/* fill in crc (except data pages), footer */
con->out_msg->hdr.crc =
cpu_to_le32(crc32c(0, (void *)&m->hdr,
sizeof(m->hdr) - sizeof(m->hdr.crc)));
crc = crc32c(0, &m->hdr, offsetof(struct ceph_msg_header, crc));
con->out_msg->hdr.crc = cpu_to_le32(crc);
con->out_msg->footer.flags = CEPH_MSG_FOOTER_COMPLETE;
con->out_msg->footer.front_crc =
cpu_to_le32(crc32c(0, m->front.iov_base, m->front.iov_len));
if (m->middle)
con->out_msg->footer.middle_crc =
cpu_to_le32(crc32c(0, m->middle->vec.iov_base,
m->middle->vec.iov_len));
else
crc = crc32c(0, m->front.iov_base, m->front.iov_len);
con->out_msg->footer.front_crc = cpu_to_le32(crc);
if (m->middle) {
crc = crc32c(0, m->middle->vec.iov_base,
m->middle->vec.iov_len);
con->out_msg->footer.middle_crc = cpu_to_le32(crc);
} else
con->out_msg->footer.middle_crc = 0;
con->out_msg->footer.data_crc = 0;
dout("prepare_write_message front_crc %u data_crc %u\n",
@ -549,11 +607,11 @@ static void prepare_write_message(struct ceph_connection *con)
else
con->out_msg_pos.page_pos = 0;
con->out_msg_pos.data_pos = 0;
con->out_msg_pos.did_page_crc = 0;
con->out_msg_pos.did_page_crc = false;
con->out_more = 1; /* data + footer will follow */
} else {
/* no, queue up footer too and be done */
prepare_write_message_footer(con, v);
prepare_write_message_footer(con);
}
set_bit(WRITE_PENDING, &con->state);
@ -568,14 +626,14 @@ static void prepare_write_ack(struct ceph_connection *con)
con->in_seq_acked, con->in_seq);
con->in_seq_acked = con->in_seq;
con->out_kvec[0].iov_base = &tag_ack;
con->out_kvec[0].iov_len = 1;
ceph_con_out_kvec_reset(con);
ceph_con_out_kvec_add(con, sizeof (tag_ack), &tag_ack);
con->out_temp_ack = cpu_to_le64(con->in_seq_acked);
con->out_kvec[1].iov_base = &con->out_temp_ack;
con->out_kvec[1].iov_len = sizeof(con->out_temp_ack);
con->out_kvec_left = 2;
con->out_kvec_bytes = 1 + sizeof(con->out_temp_ack);
con->out_kvec_cur = con->out_kvec;
ceph_con_out_kvec_add(con, sizeof (con->out_temp_ack),
&con->out_temp_ack);
con->out_more = 1; /* more will follow.. eventually.. */
set_bit(WRITE_PENDING, &con->state);
}
@ -586,11 +644,8 @@ static void prepare_write_ack(struct ceph_connection *con)
static void prepare_write_keepalive(struct ceph_connection *con)
{
dout("prepare_write_keepalive %p\n", con);
con->out_kvec[0].iov_base = &tag_keepalive;
con->out_kvec[0].iov_len = 1;
con->out_kvec_left = 1;
con->out_kvec_bytes = 1;
con->out_kvec_cur = con->out_kvec;
ceph_con_out_kvec_reset(con);
ceph_con_out_kvec_add(con, sizeof (tag_keepalive), &tag_keepalive);
set_bit(WRITE_PENDING, &con->state);
}
@ -619,12 +674,9 @@ static int prepare_connect_authorizer(struct ceph_connection *con)
con->out_connect.authorizer_protocol = cpu_to_le32(auth_protocol);
con->out_connect.authorizer_len = cpu_to_le32(auth_len);
if (auth_len) {
con->out_kvec[con->out_kvec_left].iov_base = auth_buf;
con->out_kvec[con->out_kvec_left].iov_len = auth_len;
con->out_kvec_left++;
con->out_kvec_bytes += auth_len;
}
if (auth_len)
ceph_con_out_kvec_add(con, auth_len, auth_buf);
return 0;
}
@ -634,22 +686,18 @@ static int prepare_connect_authorizer(struct ceph_connection *con)
static void prepare_write_banner(struct ceph_messenger *msgr,
struct ceph_connection *con)
{
int len = strlen(CEPH_BANNER);
ceph_con_out_kvec_reset(con);
ceph_con_out_kvec_add(con, strlen(CEPH_BANNER), CEPH_BANNER);
ceph_con_out_kvec_add(con, sizeof (msgr->my_enc_addr),
&msgr->my_enc_addr);
con->out_kvec[0].iov_base = CEPH_BANNER;
con->out_kvec[0].iov_len = len;
con->out_kvec[1].iov_base = &msgr->my_enc_addr;
con->out_kvec[1].iov_len = sizeof(msgr->my_enc_addr);
con->out_kvec_left = 2;
con->out_kvec_bytes = len + sizeof(msgr->my_enc_addr);
con->out_kvec_cur = con->out_kvec;
con->out_more = 0;
set_bit(WRITE_PENDING, &con->state);
}
static int prepare_write_connect(struct ceph_messenger *msgr,
struct ceph_connection *con,
int after_banner)
int include_banner)
{
unsigned global_seq = get_global_seq(con->msgr, 0);
int proto;
@ -678,22 +726,18 @@ static int prepare_write_connect(struct ceph_messenger *msgr,
con->out_connect.protocol_version = cpu_to_le32(proto);
con->out_connect.flags = 0;
if (!after_banner) {
con->out_kvec_left = 0;
con->out_kvec_bytes = 0;
}
con->out_kvec[con->out_kvec_left].iov_base = &con->out_connect;
con->out_kvec[con->out_kvec_left].iov_len = sizeof(con->out_connect);
con->out_kvec_left++;
con->out_kvec_bytes += sizeof(con->out_connect);
con->out_kvec_cur = con->out_kvec;
if (include_banner)
prepare_write_banner(msgr, con);
else
ceph_con_out_kvec_reset(con);
ceph_con_out_kvec_add(con, sizeof (con->out_connect), &con->out_connect);
con->out_more = 0;
set_bit(WRITE_PENDING, &con->state);
return prepare_connect_authorizer(con);
}
/*
* write as much of pending kvecs to the socket as we can.
* 1 -> done
@ -714,17 +758,18 @@ static int write_partial_kvec(struct ceph_connection *con)
con->out_kvec_bytes -= ret;
if (con->out_kvec_bytes == 0)
break; /* done */
while (ret > 0) {
if (ret >= con->out_kvec_cur->iov_len) {
ret -= con->out_kvec_cur->iov_len;
con->out_kvec_cur++;
con->out_kvec_left--;
} else {
con->out_kvec_cur->iov_len -= ret;
con->out_kvec_cur->iov_base += ret;
ret = 0;
break;
}
/* account for full iov entries consumed */
while (ret >= con->out_kvec_cur->iov_len) {
BUG_ON(!con->out_kvec_left);
ret -= con->out_kvec_cur->iov_len;
con->out_kvec_cur++;
con->out_kvec_left--;
}
/* and for a partially-consumed entry */
if (ret) {
con->out_kvec_cur->iov_len -= ret;
con->out_kvec_cur->iov_base += ret;
}
}
con->out_kvec_left = 0;
@ -773,7 +818,7 @@ static int write_partial_msg_pages(struct ceph_connection *con)
struct ceph_msg *msg = con->out_msg;
unsigned data_len = le32_to_cpu(msg->hdr.data_len);
size_t len;
int crc = con->msgr->nocrc;
bool do_datacrc = !con->msgr->nocrc;
int ret;
int total_max_write;
int in_trail = 0;
@ -790,9 +835,8 @@ static int write_partial_msg_pages(struct ceph_connection *con)
while (data_len > con->out_msg_pos.data_pos) {
struct page *page = NULL;
void *kaddr = NULL;
int max_write = PAGE_SIZE;
int page_shift = 0;
int bio_offset = 0;
total_max_write = data_len - trail_len -
con->out_msg_pos.data_pos;
@ -811,58 +855,47 @@ static int write_partial_msg_pages(struct ceph_connection *con)
page = list_first_entry(&msg->trail->head,
struct page, lru);
if (crc)
kaddr = kmap(page);
max_write = PAGE_SIZE;
} else if (msg->pages) {
page = msg->pages[con->out_msg_pos.page];
if (crc)
kaddr = kmap(page);
} else if (msg->pagelist) {
page = list_first_entry(&msg->pagelist->head,
struct page, lru);
if (crc)
kaddr = kmap(page);
#ifdef CONFIG_BLOCK
} else if (msg->bio) {
struct bio_vec *bv;
bv = bio_iovec_idx(msg->bio_iter, msg->bio_seg);
page = bv->bv_page;
page_shift = bv->bv_offset;
if (crc)
kaddr = kmap(page) + page_shift;
bio_offset = bv->bv_offset;
max_write = bv->bv_len;
#endif
} else {
page = con->msgr->zero_page;
if (crc)
kaddr = page_address(con->msgr->zero_page);
page = zero_page;
}
len = min_t(int, max_write - con->out_msg_pos.page_pos,
total_max_write);
if (crc && !con->out_msg_pos.did_page_crc) {
void *base = kaddr + con->out_msg_pos.page_pos;
if (do_datacrc && !con->out_msg_pos.did_page_crc) {
void *base;
u32 crc;
u32 tmpcrc = le32_to_cpu(con->out_msg->footer.data_crc);
char *kaddr;
kaddr = kmap(page);
BUG_ON(kaddr == NULL);
con->out_msg->footer.data_crc =
cpu_to_le32(crc32c(tmpcrc, base, len));
con->out_msg_pos.did_page_crc = 1;
base = kaddr + con->out_msg_pos.page_pos + bio_offset;
crc = crc32c(tmpcrc, base, len);
con->out_msg->footer.data_crc = cpu_to_le32(crc);
con->out_msg_pos.did_page_crc = true;
}
ret = kernel_sendpage(con->sock, page,
con->out_msg_pos.page_pos + page_shift,
len,
MSG_DONTWAIT | MSG_NOSIGNAL |
MSG_MORE);
ret = ceph_tcp_sendpage(con->sock, page,
con->out_msg_pos.page_pos + bio_offset,
len, 1);
if (crc &&
(msg->pages || msg->pagelist || msg->bio || in_trail))
if (do_datacrc)
kunmap(page);
if (ret == -EAGAIN)
ret = 0;
if (ret <= 0)
goto out;
@ -871,7 +904,7 @@ static int write_partial_msg_pages(struct ceph_connection *con)
if (ret == len) {
con->out_msg_pos.page_pos = 0;
con->out_msg_pos.page++;
con->out_msg_pos.did_page_crc = 0;
con->out_msg_pos.did_page_crc = false;
if (in_trail)
list_move_tail(&page->lru,
&msg->trail->head);
@ -888,12 +921,10 @@ static int write_partial_msg_pages(struct ceph_connection *con)
dout("write_partial_msg_pages %p msg %p done\n", con, msg);
/* prepare and queue up footer, too */
if (!crc)
if (!do_datacrc)
con->out_msg->footer.flags |= CEPH_MSG_FOOTER_NOCRC;
con->out_kvec_bytes = 0;
con->out_kvec_left = 0;
con->out_kvec_cur = con->out_kvec;
prepare_write_message_footer(con, 0);
ceph_con_out_kvec_reset(con);
prepare_write_message_footer(con);
ret = 1;
out:
return ret;
@ -907,12 +938,9 @@ static int write_partial_skip(struct ceph_connection *con)
int ret;
while (con->out_skip > 0) {
struct kvec iov = {
.iov_base = page_address(con->msgr->zero_page),
.iov_len = min(con->out_skip, (int)PAGE_CACHE_SIZE)
};
size_t size = min(con->out_skip, (int) PAGE_CACHE_SIZE);
ret = ceph_tcp_sendmsg(con->sock, &iov, 1, iov.iov_len, 1);
ret = ceph_tcp_sendpage(con->sock, zero_page, 0, size, 1);
if (ret <= 0)
goto out;
con->out_skip -= ret;
@ -1085,8 +1113,8 @@ static void addr_set_port(struct sockaddr_storage *ss, int p)
static int ceph_pton(const char *str, size_t len, struct sockaddr_storage *ss,
char delim, const char **ipend)
{
struct sockaddr_in *in4 = (void *)ss;
struct sockaddr_in6 *in6 = (void *)ss;
struct sockaddr_in *in4 = (struct sockaddr_in *) ss;
struct sockaddr_in6 *in6 = (struct sockaddr_in6 *) ss;
memset(ss, 0, sizeof(*ss));
@ -1512,10 +1540,9 @@ static int read_partial_message_section(struct ceph_connection *con,
if (ret <= 0)
return ret;
section->iov_len += ret;
if (section->iov_len == sec_len)
*crc = crc32c(0, section->iov_base,
section->iov_len);
}
if (section->iov_len == sec_len)
*crc = crc32c(0, section->iov_base, section->iov_len);
return 1;
}
@ -1527,7 +1554,7 @@ static struct ceph_msg *ceph_alloc_msg(struct ceph_connection *con,
static int read_partial_message_pages(struct ceph_connection *con,
struct page **pages,
unsigned data_len, int datacrc)
unsigned data_len, bool do_datacrc)
{
void *p;
int ret;
@ -1540,7 +1567,7 @@ static int read_partial_message_pages(struct ceph_connection *con,
p = kmap(pages[con->in_msg_pos.page]);
ret = ceph_tcp_recvmsg(con->sock, p + con->in_msg_pos.page_pos,
left);
if (ret > 0 && datacrc)
if (ret > 0 && do_datacrc)
con->in_data_crc =
crc32c(con->in_data_crc,
p + con->in_msg_pos.page_pos, ret);
@ -1560,7 +1587,7 @@ static int read_partial_message_pages(struct ceph_connection *con,
#ifdef CONFIG_BLOCK
static int read_partial_message_bio(struct ceph_connection *con,
struct bio **bio_iter, int *bio_seg,
unsigned data_len, int datacrc)
unsigned data_len, bool do_datacrc)
{
struct bio_vec *bv = bio_iovec_idx(*bio_iter, *bio_seg);
void *p;
@ -1576,7 +1603,7 @@ static int read_partial_message_bio(struct ceph_connection *con,
ret = ceph_tcp_recvmsg(con->sock, p + con->in_msg_pos.page_pos,
left);
if (ret > 0 && datacrc)
if (ret > 0 && do_datacrc)
con->in_data_crc =
crc32c(con->in_data_crc,
p + con->in_msg_pos.page_pos, ret);
@ -1603,9 +1630,10 @@ static int read_partial_message(struct ceph_connection *con)
int ret;
int to, left;
unsigned front_len, middle_len, data_len;
int datacrc = con->msgr->nocrc;
bool do_datacrc = !con->msgr->nocrc;
int skip;
u64 seq;
u32 crc;
dout("read_partial_message con %p msg %p\n", con, m);
@ -1618,17 +1646,16 @@ static int read_partial_message(struct ceph_connection *con)
if (ret <= 0)
return ret;
con->in_base_pos += ret;
if (con->in_base_pos == sizeof(con->in_hdr)) {
u32 crc = crc32c(0, (void *)&con->in_hdr,
sizeof(con->in_hdr) - sizeof(con->in_hdr.crc));
if (crc != le32_to_cpu(con->in_hdr.crc)) {
pr_err("read_partial_message bad hdr "
" crc %u != expected %u\n",
crc, con->in_hdr.crc);
return -EBADMSG;
}
}
}
crc = crc32c(0, &con->in_hdr, offsetof(struct ceph_msg_header, crc));
if (cpu_to_le32(crc) != con->in_hdr.crc) {
pr_err("read_partial_message bad hdr "
" crc %u != expected %u\n",
crc, con->in_hdr.crc);
return -EBADMSG;
}
front_len = le32_to_cpu(con->in_hdr.front_len);
if (front_len > CEPH_MSG_MAX_FRONT_LEN)
return -EIO;
@ -1714,7 +1741,7 @@ static int read_partial_message(struct ceph_connection *con)
while (con->in_msg_pos.data_pos < data_len) {
if (m->pages) {
ret = read_partial_message_pages(con, m->pages,
data_len, datacrc);
data_len, do_datacrc);
if (ret <= 0)
return ret;
#ifdef CONFIG_BLOCK
@ -1722,7 +1749,7 @@ static int read_partial_message(struct ceph_connection *con)
ret = read_partial_message_bio(con,
&m->bio_iter, &m->bio_seg,
data_len, datacrc);
data_len, do_datacrc);
if (ret <= 0)
return ret;
#endif
@ -1757,7 +1784,7 @@ static int read_partial_message(struct ceph_connection *con)
m, con->in_middle_crc, m->footer.middle_crc);
return -EBADMSG;
}
if (datacrc &&
if (do_datacrc &&
(m->footer.flags & CEPH_MSG_FOOTER_NOCRC) == 0 &&
con->in_data_crc != le32_to_cpu(m->footer.data_crc)) {
pr_err("read_partial_message %p data crc %u != exp. %u\n", m,
@ -1819,7 +1846,6 @@ more:
/* open the socket first? */
if (con->sock == NULL) {
prepare_write_banner(msgr, con);
prepare_write_connect(msgr, con, 1);
prepare_read_banner(con);
set_bit(CONNECTING, &con->state);
@ -1829,11 +1855,9 @@ more:
con->in_tag = CEPH_MSGR_TAG_READY;
dout("try_write initiating connect on %p new state %lu\n",
con, con->state);
con->sock = ceph_tcp_connect(con);
if (IS_ERR(con->sock)) {
con->sock = NULL;
ret = ceph_tcp_connect(con);
if (ret < 0) {
con->error_msg = "connect error";
ret = -1;
goto out;
}
}
@ -1953,8 +1977,9 @@ more:
*
* FIXME: there must be a better way to do this!
*/
static char buf[1024];
int skip = min(1024, -con->in_base_pos);
static char buf[SKIP_BUF_SIZE];
int skip = min((int) sizeof (buf), -con->in_base_pos);
dout("skipping %d / %d bytes\n", skip, -con->in_base_pos);
ret = ceph_tcp_recvmsg(con->sock, buf, skip);
if (ret <= 0)
@ -2216,15 +2241,6 @@ struct ceph_messenger *ceph_messenger_create(struct ceph_entity_addr *myaddr,
spin_lock_init(&msgr->global_seq_lock);
/* the zero page is needed if a request is "canceled" while the message
* is being written over the socket */
msgr->zero_page = __page_cache_alloc(GFP_KERNEL | __GFP_ZERO);
if (!msgr->zero_page) {
kfree(msgr);
return ERR_PTR(-ENOMEM);
}
kmap(msgr->zero_page);
if (myaddr)
msgr->inst.addr = *myaddr;
@ -2241,8 +2257,6 @@ EXPORT_SYMBOL(ceph_messenger_create);
void ceph_messenger_destroy(struct ceph_messenger *msgr)
{
dout("destroy %p\n", msgr);
kunmap(msgr->zero_page);
__free_page(msgr->zero_page);
kfree(msgr);
dout("destroyed messenger %p\n", msgr);
}

3
net/ceph/osdmap.c
View File

@ -283,7 +283,8 @@ static struct crush_map *crush_decode(void *pbyval, void *end)
ceph_decode_32_safe(p, end, yes, bad);
#if BITS_PER_LONG == 32
err = -EINVAL;
if (yes > ULONG_MAX / sizeof(struct crush_rule_step))
if (yes > (ULONG_MAX - sizeof(*r))
/ sizeof(struct crush_rule_step))
goto bad;
#endif
r = c->rules[i] = kmalloc(sizeof(*r) +