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Date: Thu, 3 Aug 2017 15:42:11 +0800
From: Xin Long <lucien.xin@...il.com>
To: network dev <netdev@...r.kernel.org>, linux-sctp@...r.kernel.org
Cc: Marcelo Ricardo Leitner <marcelo.leitner@...il.com>,
Neil Horman <nhorman@...driver.com>, davem@...emloft.net
Subject: [PATCH net-next 03/14] sctp: remove the typedef sctp_errhdr_t
This patch is to remove the typedef sctp_errhdr_t, and replace
with struct sctp_errhdr in the places where it's using this
typedef.
It is also to use sizeof(variable) instead of sizeof(type).
Signed-off-by: Xin Long <lucien.xin@...il.com>
---
include/linux/sctp.h | 6 +++---
include/net/sctp/sctp.h | 8 ++++----
net/sctp/sm_make_chunk.c | 38 ++++++++++++++++++++------------------
net/sctp/sm_sideeffect.c | 2 +-
net/sctp/sm_statefuns.c | 29 +++++++++++++++--------------
net/sctp/ulpevent.c | 10 +++++-----
6 files changed, 48 insertions(+), 45 deletions(-)
diff --git a/include/linux/sctp.h b/include/linux/sctp.h
index 553020c..d35bdd3 100644
--- a/include/linux/sctp.h
+++ b/include/linux/sctp.h
@@ -427,15 +427,15 @@ struct sctp_shutdown_chunk {
/* RFC 2960. Section 3.3.10 Operation Error (ERROR) (9) */
-typedef struct sctp_errhdr {
+struct sctp_errhdr {
__be16 cause;
__be16 length;
__u8 variable[0];
-} sctp_errhdr_t;
+};
typedef struct sctp_operr_chunk {
struct sctp_chunkhdr chunk_hdr;
- sctp_errhdr_t err_hdr;
+ struct sctp_errhdr err_hdr;
} sctp_operr_chunk_t;
/* RFC 2960 3.3.10 - Operation Error
diff --git a/include/net/sctp/sctp.h b/include/net/sctp/sctp.h
index 45fd4c6..84650fe 100644
--- a/include/net/sctp/sctp.h
+++ b/include/net/sctp/sctp.h
@@ -479,13 +479,13 @@ for (pos.v = chunk->member;\
_sctp_walk_errors((err), (chunk_hdr), ntohs((chunk_hdr)->length))
#define _sctp_walk_errors(err, chunk_hdr, end)\
-for (err = (sctp_errhdr_t *)((void *)chunk_hdr + \
+for (err = (struct sctp_errhdr *)((void *)chunk_hdr + \
sizeof(struct sctp_chunkhdr));\
- ((void *)err + offsetof(sctp_errhdr_t, length) + sizeof(err->length) <=\
+ ((void *)err + offsetof(struct sctp_errhdr, length) + sizeof(err->length) <=\
(void *)chunk_hdr + end) &&\
(void *)err <= (void *)chunk_hdr + end - ntohs(err->length) &&\
- ntohs(err->length) >= sizeof(sctp_errhdr_t); \
- err = (sctp_errhdr_t *)((void *)err + SCTP_PAD4(ntohs(err->length))))
+ ntohs(err->length) >= sizeof(struct sctp_errhdr); \
+ err = (struct sctp_errhdr *)((void *)err + SCTP_PAD4(ntohs(err->length))))
#define sctp_walk_fwdtsn(pos, chunk)\
_sctp_walk_fwdtsn((pos), (chunk), ntohs((chunk)->chunk_hdr->length) - sizeof(struct sctp_fwdtsn_chunk))
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 8f1c6b6..0b2298b 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -135,14 +135,14 @@ static const struct sctp_paramhdr prsctp_param = {
void sctp_init_cause(struct sctp_chunk *chunk, __be16 cause_code,
size_t paylen)
{
- sctp_errhdr_t err;
+ struct sctp_errhdr err;
__u16 len;
/* Cause code constants are now defined in network order. */
err.cause = cause_code;
- len = sizeof(sctp_errhdr_t) + paylen;
+ len = sizeof(err) + paylen;
err.length = htons(len);
- chunk->subh.err_hdr = sctp_addto_chunk(chunk, sizeof(sctp_errhdr_t), &err);
+ chunk->subh.err_hdr = sctp_addto_chunk(chunk, sizeof(err), &err);
}
/* A helper to initialize an op error inside a
@@ -153,19 +153,19 @@ void sctp_init_cause(struct sctp_chunk *chunk, __be16 cause_code,
static int sctp_init_cause_fixed(struct sctp_chunk *chunk, __be16 cause_code,
size_t paylen)
{
- sctp_errhdr_t err;
+ struct sctp_errhdr err;
__u16 len;
/* Cause code constants are now defined in network order. */
err.cause = cause_code;
- len = sizeof(sctp_errhdr_t) + paylen;
+ len = sizeof(err) + paylen;
err.length = htons(len);
if (skb_tailroom(chunk->skb) < len)
return -ENOSPC;
- chunk->subh.err_hdr = sctp_addto_chunk_fixed(chunk,
- sizeof(sctp_errhdr_t),
- &err);
+
+ chunk->subh.err_hdr = sctp_addto_chunk_fixed(chunk, sizeof(err), &err);
+
return 0;
}
/* 3.3.2 Initiation (INIT) (1)
@@ -979,8 +979,8 @@ struct sctp_chunk *sctp_make_abort_no_data(
struct sctp_chunk *retval;
__be32 payload;
- retval = sctp_make_abort(asoc, chunk, sizeof(sctp_errhdr_t)
- + sizeof(tsn));
+ retval = sctp_make_abort(asoc, chunk,
+ sizeof(struct sctp_errhdr) + sizeof(tsn));
if (!retval)
goto no_mem;
@@ -1015,7 +1015,8 @@ struct sctp_chunk *sctp_make_abort_user(const struct sctp_association *asoc,
void *payload = NULL;
int err;
- retval = sctp_make_abort(asoc, NULL, sizeof(sctp_errhdr_t) + paylen);
+ retval = sctp_make_abort(asoc, NULL,
+ sizeof(struct sctp_errhdr) + paylen);
if (!retval)
goto err_chunk;
@@ -1080,8 +1081,8 @@ struct sctp_chunk *sctp_make_abort_violation(
struct sctp_chunk *retval;
struct sctp_paramhdr phdr;
- retval = sctp_make_abort(asoc, chunk, sizeof(sctp_errhdr_t) + paylen +
- sizeof(phdr));
+ retval = sctp_make_abort(asoc, chunk, sizeof(struct sctp_errhdr) +
+ paylen + sizeof(phdr));
if (!retval)
goto end;
@@ -1104,7 +1105,7 @@ struct sctp_chunk *sctp_make_violation_paramlen(
{
struct sctp_chunk *retval;
static const char error[] = "The following parameter had invalid length:";
- size_t payload_len = sizeof(error) + sizeof(sctp_errhdr_t) +
+ size_t payload_len = sizeof(error) + sizeof(struct sctp_errhdr) +
sizeof(*param);
retval = sctp_make_abort(asoc, chunk, payload_len);
@@ -1126,7 +1127,7 @@ struct sctp_chunk *sctp_make_violation_max_retrans(
{
struct sctp_chunk *retval;
static const char error[] = "Association exceeded its max_retans count";
- size_t payload_len = sizeof(error) + sizeof(sctp_errhdr_t);
+ size_t payload_len = sizeof(error) + sizeof(struct sctp_errhdr);
retval = sctp_make_abort(asoc, chunk, payload_len);
if (!retval)
@@ -1209,7 +1210,8 @@ static struct sctp_chunk *sctp_make_op_error_space(
struct sctp_chunk *retval;
retval = sctp_make_control(asoc, SCTP_CID_ERROR, 0,
- sizeof(sctp_errhdr_t) + size, GFP_ATOMIC);
+ sizeof(struct sctp_errhdr) + size,
+ GFP_ATOMIC);
if (!retval)
goto nodata;
@@ -2966,7 +2968,7 @@ static void sctp_add_asconf_response(struct sctp_chunk *chunk, __be32 crr_id,
__be16 err_code, sctp_addip_param_t *asconf_param)
{
sctp_addip_param_t ack_param;
- sctp_errhdr_t err_param;
+ struct sctp_errhdr err_param;
int asconf_param_len = 0;
int err_param_len = 0;
__be16 response_type;
@@ -3351,7 +3353,7 @@ static __be16 sctp_get_asconf_response(struct sctp_chunk *asconf_ack,
int no_err)
{
sctp_addip_param_t *asconf_ack_param;
- sctp_errhdr_t *err_param;
+ struct sctp_errhdr *err_param;
int length;
int asconf_ack_len;
__be16 err_code;
diff --git a/net/sctp/sm_sideeffect.c b/net/sctp/sm_sideeffect.c
index d6e5e9e..5dda8c4 100644
--- a/net/sctp/sm_sideeffect.c
+++ b/net/sctp/sm_sideeffect.c
@@ -828,7 +828,7 @@ static void sctp_cmd_assoc_update(sctp_cmd_seq_t *cmds,
if (!sctp_assoc_update(asoc, new))
return;
- abort = sctp_make_abort(asoc, NULL, sizeof(sctp_errhdr_t));
+ abort = sctp_make_abort(asoc, NULL, sizeof(struct sctp_errhdr));
if (abort) {
sctp_init_cause(abort, SCTP_ERROR_RSRC_LOW, 0);
sctp_add_cmd_sf(cmds, SCTP_CMD_REPLY, SCTP_CHUNK(abort));
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index d4d8fab..7a2ba4c 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -1233,7 +1233,7 @@ static int sctp_sf_send_restart_abort(struct net *net, union sctp_addr *ssa,
union sctp_addr_param *addrparm;
struct sctp_errhdr *errhdr;
struct sctp_endpoint *ep;
- char buffer[sizeof(struct sctp_errhdr)+sizeof(union sctp_addr_param)];
+ char buffer[sizeof(*errhdr) + sizeof(*addrparm)];
struct sctp_af *af = sctp_get_af_specific(ssa->v4.sin_family);
/* Build the error on the stack. We are way to malloc crazy
@@ -1244,7 +1244,7 @@ static int sctp_sf_send_restart_abort(struct net *net, union sctp_addr *ssa,
/* Copy into a parm format. */
len = af->to_addr_param(ssa, addrparm);
- len += sizeof(sctp_errhdr_t);
+ len += sizeof(*errhdr);
errhdr->cause = SCTP_ERROR_RESTART;
errhdr->length = htons(len);
@@ -2270,7 +2270,7 @@ sctp_disposition_t sctp_sf_cookie_echoed_err(struct net *net,
sctp_cmd_seq_t *commands)
{
struct sctp_chunk *chunk = arg;
- sctp_errhdr_t *err;
+ struct sctp_errhdr *err;
if (!sctp_vtag_verify(chunk, asoc))
return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
@@ -2337,7 +2337,7 @@ static sctp_disposition_t sctp_sf_do_5_2_6_stale(struct net *net,
struct sctp_chunk *chunk = arg, *reply;
struct sctp_cookie_preserve_param bht;
struct sctp_bind_addr *bp;
- sctp_errhdr_t *err;
+ struct sctp_errhdr *err;
u32 stale;
if (attempts > asoc->max_init_attempts) {
@@ -2348,7 +2348,7 @@ static sctp_disposition_t sctp_sf_do_5_2_6_stale(struct net *net,
return SCTP_DISPOSITION_DELETE_TCB;
}
- err = (sctp_errhdr_t *)(chunk->skb->data);
+ err = (struct sctp_errhdr *)(chunk->skb->data);
/* When calculating the time extension, an implementation
* SHOULD use the RTT information measured based on the
@@ -2364,7 +2364,7 @@ static sctp_disposition_t sctp_sf_do_5_2_6_stale(struct net *net,
* to give ample time to retransmit the new cookie and thus
* yield a higher probability of success on the reattempt.
*/
- stale = ntohl(*(__be32 *)((u8 *)err + sizeof(sctp_errhdr_t)));
+ stale = ntohl(*(__be32 *)((u8 *)err + sizeof(*err)));
stale = (stale * 2) / 1000;
bht.param_hdr.type = SCTP_PARAM_COOKIE_PRESERVATIVE;
@@ -2499,13 +2499,14 @@ static sctp_disposition_t __sctp_sf_do_9_1_abort(struct net *net,
/* See if we have an error cause code in the chunk. */
len = ntohs(chunk->chunk_hdr->length);
if (len >= sizeof(struct sctp_chunkhdr) + sizeof(struct sctp_errhdr)) {
+ struct sctp_errhdr *err;
- sctp_errhdr_t *err;
sctp_walk_errors(err, chunk->chunk_hdr);
if ((void *)err != (void *)chunk->chunk_end)
- return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
+ return sctp_sf_pdiscard(net, ep, asoc, type, arg,
+ commands);
- error = ((sctp_errhdr_t *)chunk->skb->data)->cause;
+ error = ((struct sctp_errhdr *)chunk->skb->data)->cause;
}
sctp_add_cmd_sf(commands, SCTP_CMD_SET_SK_ERR, SCTP_ERROR(ECONNRESET));
@@ -2552,7 +2553,7 @@ sctp_disposition_t sctp_sf_cookie_wait_abort(struct net *net,
/* See if we have an error cause code in the chunk. */
len = ntohs(chunk->chunk_hdr->length);
if (len >= sizeof(struct sctp_chunkhdr) + sizeof(struct sctp_errhdr))
- error = ((sctp_errhdr_t *)chunk->skb->data)->cause;
+ error = ((struct sctp_errhdr *)chunk->skb->data)->cause;
return sctp_stop_t1_and_abort(net, commands, error, ECONNREFUSED, asoc,
chunk->transport);
@@ -3310,7 +3311,7 @@ sctp_disposition_t sctp_sf_operr_notify(struct net *net,
sctp_cmd_seq_t *commands)
{
struct sctp_chunk *chunk = arg;
- sctp_errhdr_t *err;
+ struct sctp_errhdr *err;
if (!sctp_vtag_verify(chunk, asoc))
return sctp_sf_pdiscard(net, ep, asoc, type, arg, commands);
@@ -3433,7 +3434,7 @@ sctp_disposition_t sctp_sf_ootb(struct net *net,
struct sctp_chunk *chunk = arg;
struct sk_buff *skb = chunk->skb;
struct sctp_chunkhdr *ch;
- sctp_errhdr_t *err;
+ struct sctp_errhdr *err;
__u8 *ch_end;
int ootb_shut_ack = 0;
int ootb_cookie_ack = 0;
@@ -3776,7 +3777,7 @@ sctp_disposition_t sctp_sf_do_asconf_ack(struct net *net,
if (ADDIP_SERIAL_gte(rcvd_serial, sent_serial + 1) &&
!(asoc->addip_last_asconf)) {
abort = sctp_make_abort(asoc, asconf_ack,
- sizeof(sctp_errhdr_t));
+ sizeof(struct sctp_errhdr));
if (abort) {
sctp_init_cause(abort, SCTP_ERROR_ASCONF_ACK, 0);
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
@@ -3812,7 +3813,7 @@ sctp_disposition_t sctp_sf_do_asconf_ack(struct net *net,
}
abort = sctp_make_abort(asoc, asconf_ack,
- sizeof(sctp_errhdr_t));
+ sizeof(struct sctp_errhdr));
if (abort) {
sctp_init_cause(abort, SCTP_ERROR_RSRC_LOW, 0);
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
diff --git a/net/sctp/ulpevent.c b/net/sctp/ulpevent.c
index 5f86c50..67abc01 100644
--- a/net/sctp/ulpevent.c
+++ b/net/sctp/ulpevent.c
@@ -371,19 +371,19 @@ sctp_ulpevent_make_remote_error(const struct sctp_association *asoc,
struct sctp_chunk *chunk, __u16 flags,
gfp_t gfp)
{
- struct sctp_ulpevent *event;
struct sctp_remote_error *sre;
+ struct sctp_ulpevent *event;
+ struct sctp_errhdr *ch;
struct sk_buff *skb;
- sctp_errhdr_t *ch;
__be16 cause;
int elen;
- ch = (sctp_errhdr_t *)(chunk->skb->data);
+ ch = (struct sctp_errhdr *)(chunk->skb->data);
cause = ch->cause;
- elen = SCTP_PAD4(ntohs(ch->length)) - sizeof(sctp_errhdr_t);
+ elen = SCTP_PAD4(ntohs(ch->length)) - sizeof(*ch);
/* Pull off the ERROR header. */
- skb_pull(chunk->skb, sizeof(sctp_errhdr_t));
+ skb_pull(chunk->skb, sizeof(*ch));
/* Copy the skb to a new skb with room for us to prepend
* notification with.
--
2.1.0
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