sctp: update transport initializations

Right now, sctp transports are not fully initialized and when
adding any new fields, they have to be explicitely initialized.
This is prone to mistakes.  So we switch to calling kzalloc()
which makes things much simpler.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>

4 files changed, 1 insertions, 31 deletions

diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index 5915155..289241d 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -546,7 +546,7 @@ for (pos = chunk->subh.fwdtsn_hdr->skip;\
 #define WORD_ROUND(s) (((s)+3)&~3)
 
 /* Make a new instance of type.  */
-#define t_new(type, flags)	(type *)kmalloc(sizeof(type), flags)
+#define t_new(type, flags)	(type *)kzalloc(sizeof(type), flags)
 
 /* Compare two timevals.  */
 #define tv_lt(s, t) \
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index fab9cb2..37753cd 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -87,9 +87,6 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
 	/* Retrieve the SCTP per socket area.  */
 	sp = sctp_sk((struct sock *)sk);
 
-	/* Init all variables to a known value.  */
-	memset(asoc, 0, sizeof(struct sctp_association));
-
 	/* Discarding const is appropriate here.  */
 	asoc->ep = (struct sctp_endpoint *)ep;
 	sctp_endpoint_hold(asoc->ep);
diff --git a/net/sctp/endpointola.c b/net/sctp/endpointola.c
index 905fda5..2f8763b 100644
--- a/net/sctp/endpointola.c
+++ b/net/sctp/endpointola.c
@@ -70,8 +70,6 @@ static struct sctp_endpoint *sctp_endpoint_init(struct sctp_endpoint *ep,
 	struct sctp_shared_key *null_key;
 	int err;
 
-	memset(ep, 0, sizeof(struct sctp_endpoint));
-
 	ep->digest = kzalloc(SCTP_SIGNATURE_SIZE, gfp);
 	if (!ep->digest)
 		return NULL;
diff --git a/net/sctp/transport.c b/net/sctp/transport.c
index 0ebb97f..854228b 100644
--- a/net/sctp/transport.c
+++ b/net/sctp/transport.c
@@ -64,9 +64,6 @@ static struct sctp_transport *sctp_transport_init(struct sctp_transport *peer,
 	/* Copy in the address.  */
 	peer->ipaddr = *addr;
 	peer->af_specific = sctp_get_af_specific(addr->sa.sa_family);
-	peer->asoc = NULL;
-
-	peer->dst = NULL;
 	memset(&peer->saddr, 0, sizeof(union sctp_addr));
 
 	/* From 6.3.1 RTO Calculation:
@@ -76,34 +73,21 @@ static struct sctp_transport *sctp_transport_init(struct sctp_transport *peer,
 	 * parameter 'RTO.Initial'.
 	 */
 	peer->rto = msecs_to_jiffies(sctp_rto_initial);
-	peer->rtt = 0;
-	peer->rttvar = 0;
-	peer->srtt = 0;
-	peer->rto_pending = 0;
-	peer->hb_sent = 0;
-	peer->fast_recovery = 0;
 
 	peer->last_time_heard = jiffies;
 	peer->last_time_ecne_reduced = jiffies;
 
-	peer->init_sent_count = 0;
-
 	peer->param_flags = SPP_HB_DISABLE |
 			    SPP_PMTUD_ENABLE |
 			    SPP_SACKDELAY_ENABLE;
-	peer->hbinterval  = 0;
 
 	/* Initialize the default path max_retrans.  */
 	peer->pathmaxrxt  = sctp_max_retrans_path;
-	peer->error_count = 0;
 
 	INIT_LIST_HEAD(&peer->transmitted);
 	INIT_LIST_HEAD(&peer->send_ready);
 	INIT_LIST_HEAD(&peer->transports);
 
-	peer->T3_rtx_timer.expires = 0;
-	peer->hb_timer.expires = 0;
-
 	setup_timer(&peer->T3_rtx_timer, sctp_generate_t3_rtx_event,
 			(unsigned long)peer);
 	setup_timer(&peer->hb_timer, sctp_generate_heartbeat_event,
@@ -113,15 +97,6 @@ static struct sctp_transport *sctp_transport_init(struct sctp_transport *peer,
 	get_random_bytes(&peer->hb_nonce, sizeof(peer->hb_nonce));
 
 	atomic_set(&peer->refcnt, 1);
-	peer->dead = 0;
-
-	peer->malloced = 0;
-
-	/* Initialize the state information for SFR-CACC */
-	peer->cacc.changeover_active = 0;
-	peer->cacc.cycling_changeover = 0;
-	peer->cacc.next_tsn_at_change = 0;
-	peer->cacc.cacc_saw_newack = 0;
 
 	return peer;
 }