diff options
| author |   Konstantin Khorenko <khorenko@virtuozzo.com> | 2018-08-10 20:11:43 +0300 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-08-11 12:25:15 -0700 |
| commit | 0d493b4d0be352b5e361e4fa0bc3efe952d8b10e (patch) | |
| tree | deb3bba890d034e4bbf323e99060f7c5fe934e6e /include/net/sctp/structs.h | |
| parent | net/sctp: Make wrappers for accessing in/out streams (diff) | |
| download | linux-dev-0d493b4d0be352b5e361e4fa0bc3efe952d8b10e.tar.xz linux-dev-0d493b4d0be352b5e361e4fa0bc3efe952d8b10e.zip | |
net/sctp: Replace in/out stream arrays with flex_array
This path replaces physically contiguous memory arrays
allocated using kmalloc_array() with flexible arrays.
This enables to avoid memory allocation failures on the
systems under a memory stress.
Signed-off-by: Oleg Babin <obabin@virtuozzo.com>
Signed-off-by: Konstantin Khorenko <khorenko@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/net/sctp/structs.h')
| -rw-r--r-- | include/net/sctp/structs.h | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/include/net/sctp/structs.h b/include/net/sctp/structs.h index 6b2b8df8a1d2..28a7c8e44636 100644 --- a/include/net/sctp/structs.h +++ b/include/net/sctp/structs.h @@ -57,6 +57,7 @@ #include <linux/atomic.h> /* This gets us atomic counters. */ #include <linux/skbuff.h> /* We need sk_buff_head. */ #include <linux/workqueue.h> /* We need tq_struct. */ +#include <linux/flex_array.h> /* We need flex_array. */ #include <linux/sctp.h> /* We need sctp* header structs. */ #include <net/sctp/auth.h> /* We need auth specific structs */ #include <net/ip.h> /* For inet_skb_parm */ @@ -1438,8 +1439,8 @@ struct sctp_stream_in { }; struct sctp_stream { - struct sctp_stream_out *out; - struct sctp_stream_in *in; + struct flex_array *out; + struct flex_array *in; __u16 outcnt; __u16 incnt; /* Current stream being sent, if any */ @@ -1465,14 +1466,14 @@ static inline struct sctp_stream_out *sctp_stream_out( const struct sctp_stream *stream, __u16 sid) { - return ((struct sctp_stream_out *)(stream->out)) + sid; + return flex_array_get(stream->out, sid); } static inline struct sctp_stream_in *sctp_stream_in( const struct sctp_stream *stream, __u16 sid) { - return ((struct sctp_stream_in *)(stream->in)) + sid; + return flex_array_get(stream->in, sid); } #define SCTP_SO(s, i) sctp_stream_out((s), (i)) |