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Date: Mon, 30 Jun 2014 13:01:04 +0000
From: David Laight <David.Laight@...LAB.COM>
To: Network Development <netdev@...r.kernel.org>,
"linux-sctp@...r.kernel.org" <linux-sctp@...r.kernel.org>
CC: "David S. Miller" <davem@...emloft.net>
Subject: [PATCH net-next 1/3] net: sctp: Inline the functions from command.c
sctp_init_cmd_seq() and sctp_next_cmd() are only called from one place.
The call sequence for sctp_add_cmd_sf() is likely to be longer than
the inlined code.
With sctp_add_cmd_sf() inlined the compiler can optimise repeated calls.
Signed-off-by: David Laight <david.laight@...lab.com>
---
include/net/sctp/command.h | 27 +++++++++++++++---
net/sctp/Makefile | 2 +-
net/sctp/command.c | 68 ----------------------------------------------
3 files changed, 24 insertions(+), 73 deletions(-)
delete mode 100644 net/sctp/command.c
diff --git a/include/net/sctp/command.h b/include/net/sctp/command.h
index 6547ab7..020eb95 100644
--- a/include/net/sctp/command.h
+++ b/include/net/sctp/command.h
@@ -210,19 +210,38 @@ typedef struct {
/* Initialize a block of memory as a command sequence.
* Return 0 if the initialization fails.
*/
-int sctp_init_cmd_seq(sctp_cmd_seq_t *seq);
+static inline int sctp_init_cmd_seq(sctp_cmd_seq_t *seq)
+{
+ memset(seq, 0, sizeof(sctp_cmd_seq_t));
+ return 1; /* We always succeed. */
+}
+
/* Add a command to an sctp_cmd_seq_t.
*
* Use the SCTP_* constructors defined by SCTP_ARG_CONSTRUCTOR() above
* to wrap data which goes in the obj argument.
*/
-void sctp_add_cmd_sf(sctp_cmd_seq_t *seq, sctp_verb_t verb, sctp_arg_t obj);
+static inline void sctp_add_cmd_sf(sctp_cmd_seq_t *seq, sctp_verb_t verb,
+ sctp_arg_t obj)
+{
+ BUG_ON(seq->next_free_slot >= SCTP_MAX_NUM_COMMANDS);
+
+ seq->cmds[seq->next_free_slot].verb = verb;
+ seq->cmds[seq->next_free_slot++].obj = obj;
+}
/* Return the next command structure in an sctp_cmd_seq.
* Return NULL at the end of the sequence.
*/
-sctp_cmd_t *sctp_next_cmd(sctp_cmd_seq_t *seq);
+static inline sctp_cmd_t *sctp_next_cmd(sctp_cmd_seq_t *seq)
+{
+ sctp_cmd_t *retval = NULL;
-#endif /* __net_sctp_command_h__ */
+ if (seq->next_cmd < seq->next_free_slot)
+ retval = &seq->cmds[seq->next_cmd++];
+
+ return retval;
+}
+#endif /* __net_sctp_command_h__ */
diff --git a/net/sctp/Makefile b/net/sctp/Makefile
index 5c30b7a..3b4ffb0 100644
--- a/net/sctp/Makefile
+++ b/net/sctp/Makefile
@@ -8,7 +8,7 @@ obj-$(CONFIG_NET_SCTPPROBE) += sctp_probe.o
sctp-y := sm_statetable.o sm_statefuns.o sm_sideeffect.o \
protocol.o endpointola.o associola.o \
transport.o chunk.o sm_make_chunk.o ulpevent.o \
- inqueue.o outqueue.o ulpqueue.o command.o \
+ inqueue.o outqueue.o ulpqueue.o \
tsnmap.o bind_addr.o socket.o primitive.o \
output.o input.o debug.o ssnmap.o auth.o
diff --git a/net/sctp/command.c b/net/sctp/command.c
deleted file mode 100644
index dd73758..0000000
--- a/net/sctp/command.c
+++ /dev/null
@@ -1,68 +0,0 @@
-/* SCTP kernel implementation Copyright (C) 1999-2001
- * Cisco, Motorola, and IBM
- * Copyright 2001 La Monte H.P. Yarroll
- *
- * This file is part of the SCTP kernel implementation
- *
- * These functions manipulate sctp command sequences.
- *
- * This SCTP implementation is free software;
- * you can redistribute it and/or modify it under the terms of
- * the GNU General Public License as published by
- * the Free Software Foundation; either version 2, or (at your option)
- * any later version.
- *
- * This SCTP implementation is distributed in the hope that it
- * will be useful, but WITHOUT ANY WARRANTY; without even the implied
- * ************************
- * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
- * See the GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with GNU CC; see the file COPYING. If not, see
- * <http://www.gnu.org/licenses/>.
- *
- * Please send any bug reports or fixes you make to the
- * email address(es):
- * lksctp developers <linux-sctp@...r.kernel.org>
- *
- * Written or modified by:
- * La Monte H.P. Yarroll <piggy@....org>
- * Karl Knutson <karl@...ena.chicago.il.us>
- */
-
-#include <linux/types.h>
-#include <net/sctp/sctp.h>
-#include <net/sctp/sm.h>
-
-/* Initialize a block of memory as a command sequence. */
-int sctp_init_cmd_seq(sctp_cmd_seq_t *seq)
-{
- memset(seq, 0, sizeof(sctp_cmd_seq_t));
- return 1; /* We always succeed. */
-}
-
-/* Add a command to a sctp_cmd_seq_t.
- * Return 0 if the command sequence is full.
- */
-void sctp_add_cmd_sf(sctp_cmd_seq_t *seq, sctp_verb_t verb, sctp_arg_t obj)
-{
- BUG_ON(seq->next_free_slot >= SCTP_MAX_NUM_COMMANDS);
-
- seq->cmds[seq->next_free_slot].verb = verb;
- seq->cmds[seq->next_free_slot++].obj = obj;
-}
-
-/* Return the next command structure in a sctp_cmd_seq.
- * Returns NULL at the end of the sequence.
- */
-sctp_cmd_t *sctp_next_cmd(sctp_cmd_seq_t *seq)
-{
- sctp_cmd_t *retval = NULL;
-
- if (seq->next_cmd < seq->next_free_slot)
- retval = &seq->cmds[seq->next_cmd++];
-
- return retval;
-}
-
--
1.8.1.2
--
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