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tipc: remove user_port instance from tipc_port structure

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After the native API has been completely removed, the 'user_port'
field in struct tipc_port becomes unused, and can be removed.
As a consequence, the "usrmem" argument in tipc_msg_build() is no
longer needed, and so we remove that one too.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ying Xue 2013-06-17 10:54:43 -04:00 committed by David S. Miller
parent 198d73b82b
commit f1733d7580
5 changed files with 17 additions and 42 deletions
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6
net/tipc/link.c
View file

@ -1081,7 +1081,7 @@ int tipc_link_send_sections_fast(struct tipc_port *sender,
* (Must not hold any locks while building message.)
*/
res = tipc_msg_build(hdr, msg_sect, num_sect, total_len,
sender->max_pkt, !sender->user_port, &buf);
sender->max_pkt, &buf);
read_lock_bh(&tipc_net_lock);
node = tipc_node_find(destaddr);
@ -1216,7 +1216,6 @@ static int link_send_sections_long(struct tipc_port *sender,
else
sz = fragm_rest;
if (likely(!sender->user_port)) {
if (copy_from_user(buf->data + fragm_crs, sect_crs, sz)) {
error:
for (; buf_chain; buf_chain = buf) {
@ -1225,9 +1224,6 @@ static int link_send_sections_long(struct tipc_port *sender,
}
return -EFAULT;
}
} else
skb_copy_to_linear_data_offset(buf, fragm_crs,
sect_crs, sz);
sect_crs += sz;
sect_rest -= sz;
fragm_crs += sz;

9
net/tipc/msg.c
View file

@ -73,8 +73,8 @@ void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type,
* Returns message data size or errno
*/
int tipc_msg_build(struct tipc_msg *hdr, struct iovec const *msg_sect,
u32 num_sect, unsigned int total_len,
int max_size, int usrmem, struct sk_buff **buf)
u32 num_sect, unsigned int total_len, int max_size,
struct sk_buff **buf)
{
int dsz, sz, hsz, pos, res, cnt;
@ -92,11 +92,6 @@ int tipc_msg_build(struct tipc_msg *hdr, struct iovec const *msg_sect,
return -ENOMEM;
skb_copy_to_linear_data(*buf, hdr, hsz);
for (res = 1, cnt = 0; res && (cnt < num_sect); cnt++) {
if (likely(usrmem))
res = !copy_from_user((*buf)->data + pos,
msg_sect[cnt].iov_base,
msg_sect[cnt].iov_len);
else
skb_copy_to_linear_data_offset(*buf, pos,
msg_sect[cnt].iov_base,
msg_sect[cnt].iov_len);

4
net/tipc/msg.h
View file

@ -722,6 +722,6 @@ u32 tipc_msg_tot_importance(struct tipc_msg *m);
void tipc_msg_init(struct tipc_msg *m, u32 user, u32 type,
u32 hsize, u32 destnode);
int tipc_msg_build(struct tipc_msg *hdr, struct iovec const *msg_sect,
u32 num_sect, unsigned int total_len,
int max_size, int usrmem, struct sk_buff **buf);
u32 num_sect, unsigned int total_len, int max_size,
struct sk_buff **buf);
#endif

8
net/tipc/port.c
View file

@ -115,7 +115,7 @@ int tipc_multicast(u32 ref, struct tipc_name_seq const *seq,
msg_set_nameupper(hdr, seq->upper);
msg_set_hdr_sz(hdr, MCAST_H_SIZE);
res = tipc_msg_build(hdr, msg_sect, num_sect, total_len, MAX_MSG_SIZE,
!oport->user_port, &buf);
&buf);
if (unlikely(!buf))
return res;
@ -234,7 +234,6 @@ struct tipc_port *tipc_createport_raw(void *usr_handle,
INIT_LIST_HEAD(&p_ptr->subscription.nodesub_list);
p_ptr->dispatcher = dispatcher;
p_ptr->wakeup = wakeup;
p_ptr->user_port = NULL;
k_init_timer(&p_ptr->timer, (Handler)port_timeout, ref);
INIT_LIST_HEAD(&p_ptr->publications);
INIT_LIST_HEAD(&p_ptr->port_list);
@ -271,7 +270,6 @@ int tipc_deleteport(u32 ref)
buf = port_build_peer_abort_msg(p_ptr, TIPC_ERR_NO_PORT);
tipc_nodesub_unsubscribe(&p_ptr->subscription);
}
kfree(p_ptr->user_port);
spin_lock_bh(&tipc_port_list_lock);
list_del(&p_ptr->port_list);
@ -444,7 +442,7 @@ int tipc_port_reject_sections(struct tipc_port *p_ptr, struct tipc_msg *hdr,
int res;
res = tipc_msg_build(hdr, msg_sect, num_sect, total_len, MAX_MSG_SIZE,
!p_ptr->user_port, &buf);
&buf);
if (!buf)
return res;
@ -927,7 +925,7 @@ static int tipc_port_recv_sections(struct tipc_port *sender, unsigned int num_se
int res;
res = tipc_msg_build(&sender->phdr, msg_sect, num_sect, total_len,
MAX_MSG_SIZE, !sender->user_port, &buf);
MAX_MSG_SIZE, &buf);
if (likely(buf))
tipc_port_recv_msg(buf);
return res;

14
net/tipc/port.h
View file

@ -46,18 +46,6 @@
#define CONN_OVERLOAD_LIMIT ((TIPC_FLOW_CONTROL_WIN * 2 + 1) * \
SKB_TRUESIZE(TIPC_MAX_USER_MSG_SIZE))
/**
* struct user_port - TIPC user port (used with native API)
* @usr_handle: user-specified field
* @ref: object reference to associated TIPC port
*
* <various callback routines>
*/
struct user_port {
void *usr_handle;
u32 ref;
};
/**
* struct tipc_port - TIPC port structure
* @usr_handle: pointer to additional user-defined information about port
@ -74,7 +62,6 @@ struct user_port {
* @port_list: adjacent ports in TIPC's global list of ports
* @dispatcher: ptr to routine which handles received messages
* @wakeup: ptr to routine to call when port is no longer congested
* @user_port: ptr to user port associated with port (if any)
* @wait_list: adjacent ports in list of ports waiting on link congestion
* @waiting_pkts:
* @sent: # of non-empty messages sent by port
@ -101,7 +88,6 @@ struct tipc_port {
struct list_head port_list;
u32 (*dispatcher)(struct tipc_port *, struct sk_buff *);
void (*wakeup)(struct tipc_port *);
struct user_port *user_port;
struct list_head wait_list;
u32 waiting_pkts;
u32 sent;