diff options
| author | Vasily Averin <vvs@virtuozzo.com> | 2021-08-02 11:52:47 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-08-03 13:21:39 +0300 |
| commit | 53744a4a72afe11779e0c69bbe0fff7dcd83e3ce (patch) | |
| tree | bdbc1d7b5b49d037af81a55475a33cba5433130c /net/ax25/ax25_out.c | |
| parent | 14ee70ca89e62d5888ba1bb3d8a519f233739fe8 (diff) | |
| download | linux-53744a4a72afe11779e0c69bbe0fff7dcd83e3ce.tar.xz | |
ax25: use skb_expand_head
Use skb_expand_head() in ax25_transmit_buffer and ax25_rt_build_path.
Unlike skb_realloc_headroom, new helper does not allocate a new skb if possible.
Signed-off-by: Vasily Averin <vvs@virtuozzo.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ax25/ax25_out.c')
| -rw-r--r-- | net/ax25/ax25_out.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/net/ax25/ax25_out.c b/net/ax25/ax25_out.c index f53751ba81b3..22f2f66c6e0a 100644 --- a/net/ax25/ax25_out.c +++ b/net/ax25/ax25_out.c @@ -325,7 +325,6 @@ void ax25_kick(ax25_cb *ax25) void ax25_transmit_buffer(ax25_cb *ax25, struct sk_buff *skb, int type) { - struct sk_buff *skbn; unsigned char *ptr; int headroom; @@ -336,18 +335,12 @@ void ax25_transmit_buffer(ax25_cb *ax25, struct sk_buff *skb, int type) headroom = ax25_addr_size(ax25->digipeat); - if (skb_headroom(skb) < headroom) { - if ((skbn = skb_realloc_headroom(skb, headroom)) == NULL) { + if (unlikely(skb_headroom(skb) < headroom)) { + skb = skb_expand_head(skb, headroom); + if (!skb) { printk(KERN_CRIT "AX.25: ax25_transmit_buffer - out of memory\n"); - kfree_skb(skb); return; } - - if (skb->sk != NULL) - skb_set_owner_w(skbn, skb->sk); - - consume_skb(skb); - skb = skbn; } ptr = skb_push(skb, headroom); |