This patch deletes the flexible-array peer_init[] from the structure
sctp_cookie to avoid some sparse warnings:
# make C=2 CF="-Wflexible-array-nested" M=./net/sctp/
net/sctp/sm_make_chunk.c: note: in included file (through include/net/sctp/sctp.h):
./include/net/sctp/structs.h:1588:28: warning: nested flexible array
./include/net/sctp/structs.h:343:28: warning: nested flexible array
Signed-off-by: Xin Long <lucien.xin@xxxxxxxxx>
---
include/net/sctp/structs.h | 2 +-
net/sctp/associola.c | 5 +++--
net/sctp/sm_make_chunk.c | 4 ++--
net/sctp/sm_statefuns.c | 8 +++-----
4 files changed, 9 insertions(+), 10 deletions(-)
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h
index 070c9458fff4..5c72d1864dd6 100644
--- a/include/net/sctp/structs.h
+++ b/include/net/sctp/structs.h
@@ -332,7 +332,7 @@ struct sctp_cookie {
* the association TCB is re-constructed from the cookie.
*/
__u32 raw_addr_list_len;
- struct sctp_init_chunk peer_init[];
+ /* struct sctp_init_chunk peer_init[]; */
};
diff --git a/net/sctp/associola.c b/net/sctp/associola.c
index 63ba5551c13f..796529167e8d 100644
--- a/net/sctp/associola.c
+++ b/net/sctp/associola.c
@@ -1597,9 +1597,10 @@ int sctp_assoc_set_bind_addr_from_cookie(struct sctp_association *asoc,
struct sctp_cookie *cookie,
gfp_t gfp)
{
- int var_size2 = ntohs(cookie->peer_init->chunk_hdr.length);
+ struct sctp_init_chunk *peer_init = (struct sctp_init_chunk *)(cookie + 1);
+ int var_size2 = ntohs(peer_init->chunk_hdr.length);
int var_size3 = cookie->raw_addr_list_len;
- __u8 *raw = (__u8 *)cookie->peer_init + var_size2;
+ __u8 *raw = (__u8 *)peer_init + var_size2;
return sctp_raw_to_bind_addrs(&asoc->base.bind_addr, raw, var_size3,
asoc->ep->base.bind_addr.port, gfp);
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 4dbbbc2a7742..08527d882e56 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -1707,11 +1707,11 @@ static struct sctp_cookie_param *sctp_pack_cookie(
ktime_get_real());
/* Copy the peer's init packet. */
- memcpy(&cookie->c.peer_init[0], init_chunk->chunk_hdr,
+ memcpy(cookie + 1, init_chunk->chunk_hdr,
ntohs(init_chunk->chunk_hdr->length));
/* Copy the raw local address list of the association. */
- memcpy((__u8 *)&cookie->c.peer_init[0] +
+ memcpy((__u8 *)(cookie + 1) +
ntohs(init_chunk->chunk_hdr->length), raw_addrs, addrs_len);
if (sctp_sk(ep->base.sk)->hmac) {
diff --git a/net/sctp/sm_statefuns.c b/net/sctp/sm_statefuns.c
index 8d0cfd689b20..7b8eb735fa88 100644
--- a/net/sctp/sm_statefuns.c
+++ b/net/sctp/sm_statefuns.c
@@ -794,8 +794,7 @@ enum sctp_disposition sctp_sf_do_5_1D_ce(struct net *net,
/* This is a brand-new association, so these are not yet side
* effects--it is safe to run them here.
*/
- peer_init = &chunk->subh.cookie_hdr->c.peer_init[0];
-
+ peer_init = (struct sctp_init_chunk *)(chunk->subh.cookie_hdr + 1);
if (!sctp_process_init(new_asoc, chunk,
&chunk->subh.cookie_hdr->c.peer_addr,
peer_init, GFP_ATOMIC))
@@ -1869,8 +1868,7 @@ static enum sctp_disposition sctp_sf_do_dupcook_a(
/* new_asoc is a brand-new association, so these are not yet
* side effects--it is safe to run them here.
*/
- peer_init = &chunk->subh.cookie_hdr->c.peer_init[0];
-
+ peer_init = (struct sctp_init_chunk *)(chunk->subh.cookie_hdr + 1);
if (!sctp_process_init(new_asoc, chunk, sctp_source(chunk), peer_init,
GFP_ATOMIC))
goto nomem;
@@ -1990,7 +1988,7 @@ static enum sctp_disposition sctp_sf_do_dupcook_b(
/* new_asoc is a brand-new association, so these are not yet
* side effects--it is safe to run them here.
*/
- peer_init = &chunk->subh.cookie_hdr->c.peer_init[0];
+ peer_init = (struct sctp_init_chunk *)(chunk->subh.cookie_hdr + 1);
if (!sctp_process_init(new_asoc, chunk, sctp_source(chunk), peer_init,
GFP_ATOMIC))
goto nomem;
--
2.39.1
