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sctp: rename WORD_TRUNC/ROUND macros

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To something more meaningful these days, specially because this is
working on packet headers or lengths and which are not tied to any CPU
arch but to the protocol itself.

So, WORD_TRUNC becomes SCTP_TRUNC4 and WORD_ROUND becomes SCTP_PAD4.

Reported-by: David Laight <David.Laight@ACULAB.COM>
Reported-by: David Miller <davem@davemloft.net>
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Marcelo Ricardo Leitner 2016-09-21 08:45:55 -03:00 committed by David S. Miller
parent b80b8d7a97
commit e2f036a972
11 changed files with 42 additions and 42 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
include/net/sctp/sctp.h
View File

@ -83,9 +83,9 @@
#endif
/* Round an int up to the next multiple of 4. */
#define WORD_ROUND(s) (((s)+3)&~3)
#define SCTP_PAD4(s) (((s)+3)&~3)
/* Truncate to the previous multiple of 4. */
#define WORD_TRUNC(s) ((s)&~3)
#define SCTP_TRUNC4(s) ((s)&~3)
/*
* Function declarations.
@ -433,7 +433,7 @@ static inline int sctp_frag_point(const struct sctp_association *asoc, int pmtu)
if (asoc->user_frag)
frag = min_t(int, frag, asoc->user_frag);
frag = WORD_TRUNC(min_t(int, frag, SCTP_MAX_CHUNK_LEN));
frag = SCTP_TRUNC4(min_t(int, frag, SCTP_MAX_CHUNK_LEN));
return frag;
}
@ -462,7 +462,7 @@ _sctp_walk_params((pos), (chunk), ntohs((chunk)->chunk_hdr.length), member)
for (pos.v = chunk->member;\
pos.v <= (void *)chunk + end - ntohs(pos.p->length) &&\
ntohs(pos.p->length) >= sizeof(sctp_paramhdr_t);\
pos.v += WORD_ROUND(ntohs(pos.p->length)))
pos.v += SCTP_PAD4(ntohs(pos.p->length)))
#define sctp_walk_errors(err, chunk_hdr)\
_sctp_walk_errors((err), (chunk_hdr), ntohs((chunk_hdr)->length))
@ -472,7 +472,7 @@ for (err = (sctp_errhdr_t *)((void *)chunk_hdr + \
sizeof(sctp_chunkhdr_t));\
(void *)err <= (void *)chunk_hdr + end - ntohs(err->length) &&\
ntohs(err->length) >= sizeof(sctp_errhdr_t); \
err = (sctp_errhdr_t *)((void *)err + WORD_ROUND(ntohs(err->length))))
err = (sctp_errhdr_t *)((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))

2
net/netfilter/xt_sctp.c
View File

@ -68,7 +68,7 @@ match_packet(const struct sk_buff *skb,
++i, offset, sch->type, htons(sch->length),
sch->flags);
#endif
offset += WORD_ROUND(ntohs(sch->length));
offset += SCTP_PAD4(ntohs(sch->length));
pr_debug("skb->len: %d\toffset: %d\n", skb->len, offset);

2
net/sctp/associola.c
View File

@ -1408,7 +1408,7 @@ void sctp_assoc_sync_pmtu(struct sock *sk, struct sctp_association *asoc)
transports) {
if (t->pmtu_pending && t->dst) {
sctp_transport_update_pmtu(sk, t,
WORD_TRUNC(dst_mtu(t->dst)));
SCTP_TRUNC4(dst_mtu(t->dst)));
t->pmtu_pending = 0;
}
if (!pmtu || (t->pathmtu < pmtu))

6
net/sctp/chunk.c
View File

@ -208,8 +208,8 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc,
struct sctp_hmac *hmac_desc = sctp_auth_asoc_get_hmac(asoc);
if (hmac_desc)
max_data -= WORD_ROUND(sizeof(sctp_auth_chunk_t) +
hmac_desc->hmac_len);
max_data -= SCTP_PAD4(sizeof(sctp_auth_chunk_t) +
hmac_desc->hmac_len);
}
/* Now, check if we need to reduce our max */
@ -229,7 +229,7 @@ struct sctp_datamsg *sctp_datamsg_from_user(struct sctp_association *asoc,
asoc->outqueue.out_qlen == 0 &&
list_empty(&asoc->outqueue.retransmit) &&
msg_len > max)
max_data -= WORD_ROUND(sizeof(sctp_sack_chunk_t));
max_data -= SCTP_PAD4(sizeof(sctp_sack_chunk_t));
/* Encourage Cookie-ECHO bundling. */
if (asoc->state < SCTP_STATE_COOKIE_ECHOED)

8
net/sctp/input.c
View File

@ -605,7 +605,7 @@ void sctp_v4_err(struct sk_buff *skb, __u32 info)
/* PMTU discovery (RFC1191) */
if (ICMP_FRAG_NEEDED == code) {
sctp_icmp_frag_needed(sk, asoc, transport,
WORD_TRUNC(info));
SCTP_TRUNC4(info));
goto out_unlock;
} else {
if (ICMP_PROT_UNREACH == code) {
@ -673,7 +673,7 @@ static int sctp_rcv_ootb(struct sk_buff *skb)
if (ntohs(ch->length) < sizeof(sctp_chunkhdr_t))
break;
ch_end = offset + WORD_ROUND(ntohs(ch->length));
ch_end = offset + SCTP_PAD4(ntohs(ch->length));
if (ch_end > skb->len)
break;
@ -1121,7 +1121,7 @@ static struct sctp_association *__sctp_rcv_walk_lookup(struct net *net,
if (ntohs(ch->length) < sizeof(sctp_chunkhdr_t))
break;
ch_end = ((__u8 *)ch) + WORD_ROUND(ntohs(ch->length));
ch_end = ((__u8 *)ch) + SCTP_PAD4(ntohs(ch->length));
if (ch_end > skb_tail_pointer(skb))
break;
@ -1190,7 +1190,7 @@ static struct sctp_association *__sctp_rcv_lookup_harder(struct net *net,
* that the chunk length doesn't cause overflow. Otherwise, we'll
* walk off the end.
*/
if (WORD_ROUND(ntohs(ch->length)) > skb->len)
if (SCTP_PAD4(ntohs(ch->length)) > skb->len)
return NULL;
/* If this is INIT/INIT-ACK look inside the chunk too. */

2
net/sctp/inqueue.c
View File

@ -213,7 +213,7 @@ new_skb:
}
chunk->chunk_hdr = ch;
chunk->chunk_end = ((__u8 *)ch) + WORD_ROUND(ntohs(ch->length));
chunk->chunk_end = ((__u8 *)ch) + SCTP_PAD4(ntohs(ch->length));
skb_pull(chunk->skb, sizeof(sctp_chunkhdr_t));
chunk->subh.v = NULL; /* Subheader is no longer valid. */

12
net/sctp/output.c
View File

@ -297,7 +297,7 @@ static sctp_xmit_t __sctp_packet_append_chunk(struct sctp_packet *packet,
struct sctp_chunk *chunk)
{
sctp_xmit_t retval = SCTP_XMIT_OK;
__u16 chunk_len = WORD_ROUND(ntohs(chunk->chunk_hdr->length));
__u16 chunk_len = SCTP_PAD4(ntohs(chunk->chunk_hdr->length));
/* Check to see if this chunk will fit into the packet */
retval = sctp_packet_will_fit(packet, chunk, chunk_len);
@ -508,7 +508,7 @@ int sctp_packet_transmit(struct sctp_packet *packet, gfp_t gfp)
if (gso) {
pkt_size = packet->overhead;
list_for_each_entry(chunk, &packet->chunk_list, list) {
int padded = WORD_ROUND(chunk->skb->len);
int padded = SCTP_PAD4(chunk->skb->len);
if (pkt_size + padded > tp->pathmtu)
break;
@ -538,7 +538,7 @@ int sctp_packet_transmit(struct sctp_packet *packet, gfp_t gfp)
* included in the chunk length field. The sender should
* never pad with more than 3 bytes.
*
* [This whole comment explains WORD_ROUND() below.]
* [This whole comment explains SCTP_PAD4() below.]
*/
pkt_size -= packet->overhead;
@ -560,7 +560,7 @@ int sctp_packet_transmit(struct sctp_packet *packet, gfp_t gfp)
has_data = 1;
}
padding = WORD_ROUND(chunk->skb->len) - chunk->skb->len;
padding = SCTP_PAD4(chunk->skb->len) - chunk->skb->len;
if (padding)
memset(skb_put(chunk->skb, padding), 0, padding);
@ -587,7 +587,7 @@ int sctp_packet_transmit(struct sctp_packet *packet, gfp_t gfp)
* acknowledged or have failed.
* Re-queue auth chunks if needed.
*/
pkt_size -= WORD_ROUND(chunk->skb->len);
pkt_size -= SCTP_PAD4(chunk->skb->len);
if (!sctp_chunk_is_data(chunk) && chunk != packet->auth)
sctp_chunk_free(chunk);
@ -911,7 +911,7 @@ static sctp_xmit_t sctp_packet_will_fit(struct sctp_packet *packet,
*/
maxsize = pmtu - packet->overhead;
if (packet->auth)
maxsize -= WORD_ROUND(packet->auth->skb->len);
maxsize -= SCTP_PAD4(packet->auth->skb->len);
if (chunk_len > maxsize)
retval = SCTP_XMIT_PMTU_FULL;

28
net/sctp/sm_make_chunk.c
View File

@ -253,7 +253,7 @@ struct sctp_chunk *sctp_make_init(const struct sctp_association *asoc,
num_types = sp->pf->supported_addrs(sp, types);
chunksize = sizeof(init) + addrs_len;
chunksize += WORD_ROUND(SCTP_SAT_LEN(num_types));
chunksize += SCTP_PAD4(SCTP_SAT_LEN(num_types));
chunksize += sizeof(ecap_param);
if (asoc->prsctp_enable)
@ -283,14 +283,14 @@ struct sctp_chunk *sctp_make_init(const struct sctp_association *asoc,
/* Add HMACS parameter length if any were defined */
auth_hmacs = (sctp_paramhdr_t *)asoc->c.auth_hmacs;
if (auth_hmacs->length)
chunksize += WORD_ROUND(ntohs(auth_hmacs->length));
chunksize += SCTP_PAD4(ntohs(auth_hmacs->length));
else
auth_hmacs = NULL;
/* Add CHUNKS parameter length */
auth_chunks = (sctp_paramhdr_t *)asoc->c.auth_chunks;
if (auth_chunks->length)
chunksize += WORD_ROUND(ntohs(auth_chunks->length));
chunksize += SCTP_PAD4(ntohs(auth_chunks->length));
else
auth_chunks = NULL;
@ -300,8 +300,8 @@ struct sctp_chunk *sctp_make_init(const struct sctp_association *asoc,
/* If we have any extensions to report, account for that */
if (num_ext)
chunksize += WORD_ROUND(sizeof(sctp_supported_ext_param_t) +
num_ext);
chunksize += SCTP_PAD4(sizeof(sctp_supported_ext_param_t) +
num_ext);
/* RFC 2960 3.3.2 Initiation (INIT) (1)
*
@ -443,13 +443,13 @@ struct sctp_chunk *sctp_make_init_ack(const struct sctp_association *asoc,
auth_hmacs = (sctp_paramhdr_t *)asoc->c.auth_hmacs;
if (auth_hmacs->length)
chunksize += WORD_ROUND(ntohs(auth_hmacs->length));
chunksize += SCTP_PAD4(ntohs(auth_hmacs->length));
else
auth_hmacs = NULL;
auth_chunks = (sctp_paramhdr_t *)asoc->c.auth_chunks;
if (auth_chunks->length)
chunksize += WORD_ROUND(ntohs(auth_chunks->length));
chunksize += SCTP_PAD4(ntohs(auth_chunks->length));
else
auth_chunks = NULL;
@ -458,8 +458,8 @@ struct sctp_chunk *sctp_make_init_ack(const struct sctp_association *asoc,
}
if (num_ext)
chunksize += WORD_ROUND(sizeof(sctp_supported_ext_param_t) +
num_ext);
chunksize += SCTP_PAD4(sizeof(sctp_supported_ext_param_t) +
num_ext);
/* Now allocate and fill out the chunk. */
retval = sctp_make_control(asoc, SCTP_CID_INIT_ACK, 0, chunksize, gfp);
@ -1390,7 +1390,7 @@ static struct sctp_chunk *_sctp_make_chunk(const struct sctp_association *asoc,
struct sock *sk;
/* No need to allocate LL here, as this is only a chunk. */
skb = alloc_skb(WORD_ROUND(sizeof(sctp_chunkhdr_t) + paylen), gfp);
skb = alloc_skb(SCTP_PAD4(sizeof(sctp_chunkhdr_t) + paylen), gfp);
if (!skb)
goto nodata;
@ -1482,7 +1482,7 @@ void *sctp_addto_chunk(struct sctp_chunk *chunk, int len, const void *data)
void *target;
void *padding;
int chunklen = ntohs(chunk->chunk_hdr->length);
int padlen = WORD_ROUND(chunklen) - chunklen;
int padlen = SCTP_PAD4(chunklen) - chunklen;
padding = skb_put(chunk->skb, padlen);
target = skb_put(chunk->skb, len);
@ -1900,7 +1900,7 @@ static int sctp_process_missing_param(const struct sctp_association *asoc,
struct __sctp_missing report;
__u16 len;
len = WORD_ROUND(sizeof(report));
len = SCTP_PAD4(sizeof(report));
/* Make an ERROR chunk, preparing enough room for
* returning multiple unknown parameters.
@ -2098,9 +2098,9 @@ static sctp_ierror_t sctp_process_unk_param(const struct sctp_association *asoc,
if (*errp) {
if (!sctp_init_cause_fixed(*errp, SCTP_ERROR_UNKNOWN_PARAM,
WORD_ROUND(ntohs(param.p->length))))
SCTP_PAD4(ntohs(param.p->length))))
sctp_addto_chunk_fixed(*errp,
WORD_ROUND(ntohs(param.p->length)),
SCTP_PAD4(ntohs(param.p->length)),
param.v);
} else {
/* If there is no memory for generating the ERROR

6
net/sctp/sm_statefuns.c
View File

@ -3454,7 +3454,7 @@ sctp_disposition_t sctp_sf_ootb(struct net *net,
}
/* Report violation if chunk len overflows */
ch_end = ((__u8 *)ch) + WORD_ROUND(ntohs(ch->length));
ch_end = ((__u8 *)ch) + SCTP_PAD4(ntohs(ch->length));
if (ch_end > skb_tail_pointer(skb))
return sctp_sf_violation_chunklen(net, ep, asoc, type, arg,
commands);
@ -4185,7 +4185,7 @@ sctp_disposition_t sctp_sf_unk_chunk(struct net *net,
hdr = unk_chunk->chunk_hdr;
err_chunk = sctp_make_op_error(asoc, unk_chunk,
SCTP_ERROR_UNKNOWN_CHUNK, hdr,
WORD_ROUND(ntohs(hdr->length)),
SCTP_PAD4(ntohs(hdr->length)),
0);
if (err_chunk) {
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,
@ -4203,7 +4203,7 @@ sctp_disposition_t sctp_sf_unk_chunk(struct net *net,
hdr = unk_chunk->chunk_hdr;
err_chunk = sctp_make_op_error(asoc, unk_chunk,
SCTP_ERROR_UNKNOWN_CHUNK, hdr,
WORD_ROUND(ntohs(hdr->length)),
SCTP_PAD4(ntohs(hdr->length)),
0);
if (err_chunk) {
sctp_add_cmd_sf(commands, SCTP_CMD_REPLY,

4
net/sctp/transport.c
View File

@ -233,7 +233,7 @@ void sctp_transport_pmtu(struct sctp_transport *transport, struct sock *sk)
}
if (transport->dst) {
transport->pathmtu = WORD_TRUNC(dst_mtu(transport->dst));
transport->pathmtu = SCTP_TRUNC4(dst_mtu(transport->dst));
} else
transport->pathmtu = SCTP_DEFAULT_MAXSEGMENT;
}
@ -287,7 +287,7 @@ void sctp_transport_route(struct sctp_transport *transport,
return;
}
if (transport->dst) {
transport->pathmtu = WORD_TRUNC(dst_mtu(transport->dst));
transport->pathmtu = SCTP_TRUNC4(dst_mtu(transport->dst));
/* Initialize sk->sk_rcv_saddr, if the transport is the
* association's active path for getsockname().

4
net/sctp/ulpevent.c
View File

@ -383,7 +383,7 @@ sctp_ulpevent_make_remote_error(const struct sctp_association *asoc,
ch = (sctp_errhdr_t *)(chunk->skb->data);
cause = ch->cause;
elen = WORD_ROUND(ntohs(ch->length)) - sizeof(sctp_errhdr_t);
elen = SCTP_PAD4(ntohs(ch->length)) - sizeof(sctp_errhdr_t);
/* Pull off the ERROR header. */
skb_pull(chunk->skb, sizeof(sctp_errhdr_t));
@ -688,7 +688,7 @@ struct sctp_ulpevent *sctp_ulpevent_make_rcvmsg(struct sctp_association *asoc,
* MUST ignore the padding bytes.
*/
len = ntohs(chunk->chunk_hdr->length);
padding = WORD_ROUND(len) - len;
padding = SCTP_PAD4(len) - len;
/* Fixup cloned skb with just this chunks data. */
skb_trim(skb, chunk->chunk_end - padding - skb->data);