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-rw-r--r--net/tipc/link.c88
1 files changed, 26 insertions, 62 deletions
diff --git a/net/tipc/link.c b/net/tipc/link.c
index a80feee5197..0cc3d9015c5 100644
--- a/net/tipc/link.c
+++ b/net/tipc/link.c
@@ -2,7 +2,7 @@
* net/tipc/link.c: TIPC link code
*
* Copyright (c) 1996-2007, 2012, Ericsson AB
- * Copyright (c) 2004-2007, 2010-2011, Wind River Systems
+ * Copyright (c) 2004-2007, 2010-2013, Wind River Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -41,6 +41,8 @@
#include "discover.h"
#include "config.h"
+#include <linux/pkt_sched.h>
+
/*
* Error message prefixes
*/
@@ -771,8 +773,7 @@ static void link_state_event(struct tipc_link *l_ptr, unsigned int event)
* link_bundle_buf(): Append contents of a buffer to
* the tail of an existing one.
*/
-static int link_bundle_buf(struct tipc_link *l_ptr,
- struct sk_buff *bundler,
+static int link_bundle_buf(struct tipc_link *l_ptr, struct sk_buff *bundler,
struct sk_buff *buf)
{
struct tipc_msg *bundler_msg = buf_msg(bundler);
@@ -1057,40 +1058,6 @@ static int link_send_buf_fast(struct tipc_link *l_ptr, struct sk_buff *buf,
}
/*
- * tipc_send_buf_fast: Entry for data messages where the
- * destination node is known and the header is complete,
- * inclusive total message length.
- * Returns user data length.
- */
-int tipc_send_buf_fast(struct sk_buff *buf, u32 destnode)
-{
- struct tipc_link *l_ptr;
- struct tipc_node *n_ptr;
- int res;
- u32 selector = msg_origport(buf_msg(buf)) & 1;
- u32 dummy;
-
- read_lock_bh(&tipc_net_lock);
- n_ptr = tipc_node_find(destnode);
- if (likely(n_ptr)) {
- tipc_node_lock(n_ptr);
- l_ptr = n_ptr->active_links[selector];
- if (likely(l_ptr)) {
- res = link_send_buf_fast(l_ptr, buf, &dummy);
- tipc_node_unlock(n_ptr);
- read_unlock_bh(&tipc_net_lock);
- return res;
- }
- tipc_node_unlock(n_ptr);
- }
- read_unlock_bh(&tipc_net_lock);
- res = msg_data_sz(buf_msg(buf));
- tipc_reject_msg(buf, TIPC_ERR_NO_NODE);
- return res;
-}
-
-
-/*
* tipc_link_send_sections_fast: Entry for messages where the
* destination processor is known and the header is complete,
* except for total message length.
@@ -1098,8 +1065,7 @@ int tipc_send_buf_fast(struct sk_buff *buf, u32 destnode)
*/
int tipc_link_send_sections_fast(struct tipc_port *sender,
struct iovec const *msg_sect,
- const u32 num_sect,
- unsigned int total_len,
+ const u32 num_sect, unsigned int total_len,
u32 destaddr)
{
struct tipc_msg *hdr = &sender->phdr;
@@ -1115,7 +1081,10 @@ again:
* (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);
+ /* Exit if build request was invalid */
+ if (unlikely(res < 0))
+ return res;
read_lock_bh(&tipc_net_lock);
node = tipc_node_find(destaddr);
@@ -1132,10 +1101,6 @@ exit:
return res;
}
- /* Exit if build request was invalid */
- if (unlikely(res < 0))
- goto exit;
-
/* Exit if link (or bearer) is congested */
if (link_congested(l_ptr) ||
tipc_bearer_blocked(l_ptr->b_ptr)) {
@@ -1189,8 +1154,7 @@ exit:
*/
static int link_send_sections_long(struct tipc_port *sender,
struct iovec const *msg_sect,
- u32 num_sect,
- unsigned int total_len,
+ u32 num_sect, unsigned int total_len,
u32 destaddr)
{
struct tipc_link *l_ptr;
@@ -1204,6 +1168,7 @@ static int link_send_sections_long(struct tipc_port *sender,
const unchar *sect_crs;
int curr_sect;
u32 fragm_no;
+ int res = 0;
again:
fragm_no = 1;
@@ -1250,18 +1215,15 @@ again:
else
sz = fragm_rest;
- if (likely(!sender->user_port)) {
- if (copy_from_user(buf->data + fragm_crs, sect_crs, sz)) {
+ if (copy_from_user(buf->data + fragm_crs, sect_crs, sz)) {
+ res = -EFAULT;
error:
- for (; buf_chain; buf_chain = buf) {
- buf = buf_chain->next;
- kfree_skb(buf_chain);
- }
- return -EFAULT;
+ for (; buf_chain; buf_chain = buf) {
+ buf = buf_chain->next;
+ kfree_skb(buf_chain);
}
- } else
- skb_copy_to_linear_data_offset(buf, fragm_crs,
- sect_crs, sz);
+ return res;
+ }
sect_crs += sz;
sect_rest -= sz;
fragm_crs += sz;
@@ -1281,8 +1243,10 @@ error:
msg_set_fragm_no(&fragm_hdr, ++fragm_no);
prev = buf;
buf = tipc_buf_acquire(fragm_sz + INT_H_SIZE);
- if (!buf)
+ if (!buf) {
+ res = -ENOMEM;
goto error;
+ }
buf->next = NULL;
prev->next = buf;
@@ -1446,7 +1410,7 @@ static void link_reset_all(unsigned long addr)
}
static void link_retransmit_failure(struct tipc_link *l_ptr,
- struct sk_buff *buf)
+ struct sk_buff *buf)
{
struct tipc_msg *msg = buf_msg(buf);
@@ -1901,8 +1865,8 @@ static void link_handle_out_of_seq_msg(struct tipc_link *l_ptr,
* Send protocol message to the other endpoint.
*/
void tipc_link_send_proto_msg(struct tipc_link *l_ptr, u32 msg_typ,
- int probe_msg, u32 gap, u32 tolerance,
- u32 priority, u32 ack_mtu)
+ int probe_msg, u32 gap, u32 tolerance,
+ u32 priority, u32 ack_mtu)
{
struct sk_buff *buf = NULL;
struct tipc_msg *msg = l_ptr->pmsg;
@@ -1988,6 +1952,7 @@ void tipc_link_send_proto_msg(struct tipc_link *l_ptr, u32 msg_typ,
return;
skb_copy_to_linear_data(buf, msg, sizeof(l_ptr->proto_msg));
+ buf->priority = TC_PRIO_CONTROL;
/* Defer message if bearer is already blocked */
if (tipc_bearer_blocked(l_ptr->b_ptr)) {
@@ -2145,8 +2110,7 @@ exit:
* another bearer. Owner node is locked.
*/
static void tipc_link_tunnel(struct tipc_link *l_ptr,
- struct tipc_msg *tunnel_hdr,
- struct tipc_msg *msg,
+ struct tipc_msg *tunnel_hdr, struct tipc_msg *msg,
u32 selector)
{
struct tipc_link *tunnel;
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-27 18:12:01 +0000