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authorAllan Stephens <allan.stephens@windriver.com>2010-09-03 08:33:39 +0000
committerDavid S. Miller <davem@davemloft.net>2010-09-06 18:12:56 -0700
commit5d9c54c1e9ececcf7e99c4f014f9bec7ee3a7def (patch)
treeb901d720e08c5762a0bd52b404393bb8532a6a15 /net/tipc
parentdcfc5d787a24b9a20be3e18e3dbbab5280d35e38 (diff)
tipc: Minor optimizations to name table translation code
Optimizes TIPC's name table translation code to avoid unnecessary manipulation of the node address field of the resulting port id when name translation fails. This change is possible because a valid port id cannot have a reference field of zero, so examining the reference only is sufficient to determine if the translation was successful. Signed-off-by: Allan Stephens <allan.stephens@windriver.com> Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/tipc')
-rw-r--r--net/tipc/name_table.c4
-rw-r--r--net/tipc/port.c4
2 files changed, 3 insertions, 5 deletions
diff --git a/net/tipc/name_table.c b/net/tipc/name_table.c
index d504e490fd0..c13c2c7c4b5 100644
--- a/net/tipc/name_table.c
+++ b/net/tipc/name_table.c
@@ -613,8 +613,7 @@ struct publication *tipc_nametbl_remove_publ(u32 type, u32 lower,
}
/*
- * tipc_nametbl_translate(): Translate tipc_name -> tipc_portid.
- * Very time-critical.
+ * tipc_nametbl_translate - translate name to port id
*
* Note: on entry 'destnode' is the search domain used during translation;
* on exit it passes back the node address of the matching port (if any)
@@ -685,7 +684,6 @@ found:
}
spin_unlock_bh(&seq->lock);
not_found:
- *destnode = 0;
read_unlock_bh(&tipc_nametbl_lock);
return 0;
}
diff --git a/net/tipc/port.c b/net/tipc/port.c
index ebcbc21d8f9..d760336f2ca 100644
--- a/net/tipc/port.c
+++ b/net/tipc/port.c
@@ -1464,7 +1464,7 @@ int tipc_forward2name(u32 ref,
msg_set_destnode(msg, destnode);
msg_set_destport(msg, destport);
- if (likely(destport || destnode)) {
+ if (likely(destport)) {
p_ptr->sent++;
if (likely(destnode == tipc_own_addr))
return tipc_port_recv_sections(p_ptr, num_sect, msg_sect);
@@ -1542,7 +1542,7 @@ int tipc_forward_buf2name(u32 ref,
skb_push(buf, LONG_H_SIZE);
skb_copy_to_linear_data(buf, msg, LONG_H_SIZE);
msg_dbg(buf_msg(buf),"PREP:");
- if (likely(destport || destnode)) {
+ if (likely(destport)) {
p_ptr->sent++;
if (destnode == tipc_own_addr)
return tipc_port_recv_msg(buf);