korg/linux
0
0
Fork 0
mirror of https://mirrors.bfsu.edu.cn/git/linux.git synced 2024-11-11 12:28:41 +08:00
Code Issues Packages Projects Releases Wiki Activity

net: make the tcp and udp file_operations for the /proc stuff const

Browse Source 
the tcp and udp code creates a set of struct file_operations at runtime
while it can also be done at compile time, with the added benefit of then
having these file operations be const.

the trickiest part was to get the "THIS_MODULE" reference right; the naive
method of declaring a struct in the place of registration would not work
for this reason.

Signed-off-by: Arjan van de Ven <arjan@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arjan van de Ven 2011-10-30 06:46:30 +00:00 committed by David S. Miller
parent 98f41f694f
commit 73cb88ecb9
8 changed files with 75 additions and 41 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
include/net/tcp.h
View File

@ -1403,11 +1403,13 @@ enum tcp_seq_states {
TCP_SEQ_STATE_TIME_WAIT,
};
int tcp_seq_open(struct inode *inode, struct file *file);
struct tcp_seq_afinfo {
char *name;
sa_family_t family;
struct file_operations seq_fops;
struct seq_operations seq_ops;
char *name;
sa_family_t family;
const struct file_operations *seq_fops;
struct seq_operations seq_ops;
};
struct tcp_iter_state {

12
include/net/udp.h
View File

@ -230,12 +230,14 @@ extern struct sock *udp6_lib_lookup(struct net *net, const struct in6_addr *sadd
#endif
/* /proc */
int udp_seq_open(struct inode *inode, struct file *file);
struct udp_seq_afinfo {
char *name;
sa_family_t family;
struct udp_table *udp_table;
struct file_operations seq_fops;
struct seq_operations seq_ops;
char *name;
sa_family_t family;
struct udp_table *udp_table;
const struct file_operations *seq_fops;
struct seq_operations seq_ops;
};
struct udp_iter_state {

22
net/ipv4/tcp_ipv4.c
View File

@ -2339,7 +2339,7 @@ static void tcp_seq_stop(struct seq_file *seq, void *v)
}
}
static int tcp_seq_open(struct inode *inode, struct file *file)
int tcp_seq_open(struct inode *inode, struct file *file)
{
struct tcp_seq_afinfo *afinfo = PDE(inode)->data;
struct tcp_iter_state *s;
@ -2355,23 +2355,19 @@ static int tcp_seq_open(struct inode *inode, struct file *file)
s->last_pos = 0;
return 0;
}
EXPORT_SYMBOL(tcp_seq_open);
int tcp_proc_register(struct net *net, struct tcp_seq_afinfo *afinfo)
{
int rc = 0;
struct proc_dir_entry *p;
afinfo->seq_fops.open = tcp_seq_open;
afinfo->seq_fops.read = seq_read;
afinfo->seq_fops.llseek = seq_lseek;
afinfo->seq_fops.release = seq_release_net;
afinfo->seq_ops.start = tcp_seq_start;
afinfo->seq_ops.next = tcp_seq_next;
afinfo->seq_ops.stop = tcp_seq_stop;
p = proc_create_data(afinfo->name, S_IRUGO, net->proc_net,
&afinfo->seq_fops, afinfo);
afinfo->seq_fops, afinfo);
if (!p)
rc = -ENOMEM;
return rc;
@ -2520,12 +2516,18 @@ out:
return 0;
}
static const struct file_operations tcp_afinfo_seq_fops = {
.owner = THIS_MODULE,
.open = tcp_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_net
};
static struct tcp_seq_afinfo tcp4_seq_afinfo = {
.name = "tcp",
.family = AF_INET,
.seq_fops = {
.owner = THIS_MODULE,
},
.seq_fops = &tcp_afinfo_seq_fops,
.seq_ops = {
.show = tcp4_seq_show,
},

22
net/ipv4/udp.c
View File

@ -2037,7 +2037,7 @@ static void udp_seq_stop(struct seq_file *seq, void *v)
spin_unlock_bh(&state->udp_table->hash[state->bucket].lock);
}
static int udp_seq_open(struct inode *inode, struct file *file)
int udp_seq_open(struct inode *inode, struct file *file)
{
struct udp_seq_afinfo *afinfo = PDE(inode)->data;
struct udp_iter_state *s;
@ -2053,6 +2053,7 @@ static int udp_seq_open(struct inode *inode, struct file *file)
s->udp_table = afinfo->udp_table;
return err;
}
EXPORT_SYMBOL(udp_seq_open);
/* ------------------------------------------------------------------------ */
int udp_proc_register(struct net *net, struct udp_seq_afinfo *afinfo)
@ -2060,17 +2061,12 @@ int udp_proc_register(struct net *net, struct udp_seq_afinfo *afinfo)
struct proc_dir_entry *p;
int rc = 0;
afinfo->seq_fops.open = udp_seq_open;
afinfo->seq_fops.read = seq_read;
afinfo->seq_fops.llseek = seq_lseek;
afinfo->seq_fops.release = seq_release_net;
afinfo->seq_ops.start = udp_seq_start;
afinfo->seq_ops.next = udp_seq_next;
afinfo->seq_ops.stop = udp_seq_stop;
p = proc_create_data(afinfo->name, S_IRUGO, net->proc_net,
&afinfo->seq_fops, afinfo);
afinfo->seq_fops, afinfo);
if (!p)
rc = -ENOMEM;
return rc;
@ -2120,14 +2116,20 @@ int udp4_seq_show(struct seq_file *seq, void *v)
return 0;
}
static const struct file_operations udp_afinfo_seq_fops = {
.owner = THIS_MODULE,
.open = udp_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_net
};
/* ------------------------------------------------------------------------ */
static struct udp_seq_afinfo udp4_seq_afinfo = {
.name = "udp",
.family = AF_INET,
.udp_table = &udp_table,
.seq_fops = {
.owner = THIS_MODULE,
},
.seq_fops = &udp_afinfo_seq_fops,
.seq_ops = {
.show = udp4_seq_show,
},

13
net/ipv4/udplite.c
View File

@ -71,13 +71,20 @@ static struct inet_protosw udplite4_protosw = {
};
#ifdef CONFIG_PROC_FS
static const struct file_operations udplite_afinfo_seq_fops = {
.owner = THIS_MODULE,
.open = udp_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_net
};
static struct udp_seq_afinfo udplite4_seq_afinfo = {
.name = "udplite",
.family = AF_INET,
.udp_table = &udplite_table,
.seq_fops = {
.owner = THIS_MODULE,
},
.seq_fops = &udplite_afinfo_seq_fops,
.seq_ops = {
.show = udp4_seq_show,
},

12
net/ipv6/tcp_ipv6.c
View File

@ -2161,12 +2161,18 @@ out:
return 0;
}
static const struct file_operations tcp6_afinfo_seq_fops = {
.owner = THIS_MODULE,
.open = tcp_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_net
};
static struct tcp_seq_afinfo tcp6_seq_afinfo = {
.name = "tcp6",
.family = AF_INET6,
.seq_fops = {
.owner = THIS_MODULE,
},
.seq_fops = &tcp6_afinfo_seq_fops,
.seq_ops = {
.show = tcp6_seq_show,
},

12
net/ipv6/udp.c
View File

@ -1424,13 +1424,19 @@ int udp6_seq_show(struct seq_file *seq, void *v)
return 0;
}
static const struct file_operations udp6_afinfo_seq_fops = {
.owner = THIS_MODULE,
.open = udp_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_net
};
static struct udp_seq_afinfo udp6_seq_afinfo = {
.name = "udp6",
.family = AF_INET6,
.udp_table = &udp_table,
.seq_fops = {
.owner = THIS_MODULE,
},
.seq_fops = &udp6_afinfo_seq_fops,
.seq_ops = {
.show = udp6_seq_show,
},

13
net/ipv6/udplite.c
View File

@ -93,13 +93,20 @@ void udplitev6_exit(void)
}
#ifdef CONFIG_PROC_FS
static const struct file_operations udplite6_afinfo_seq_fops = {
.owner = THIS_MODULE,
.open = udp_seq_open,
.read = seq_read,
.llseek = seq_lseek,
.release = seq_release_net
};
static struct udp_seq_afinfo udplite6_seq_afinfo = {
.name = "udplite6",
.family = AF_INET6,
.udp_table = &udplite_table,
.seq_fops = {
.owner = THIS_MODULE,
},
.seq_fops = &udplite6_afinfo_seq_fops,
.seq_ops = {
.show = udp6_seq_show,
},