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| author | Vasily Averin <vvs@virtuozzo.com> | 2021-08-02 10:52:47 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-08-03 12:21:39 +0200 |
| commit | 53744a4a72afe11779e0c69bbe0fff7dcd83e3ce (patch) | |
| tree | bdbc1d7b5b49d037af81a55475a33cba5433130c /net/ax25/ax25_route.c | |
| parent | vrf: use skb_expand_head in vrf_finish_output (diff) | |
| download | linux-53744a4a72afe11779e0c69bbe0fff7dcd83e3ce.tar.xz linux-53744a4a72afe11779e0c69bbe0fff7dcd83e3ce.zip | |
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_route.c')
| -rw-r--r-- | net/ax25/ax25_route.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/net/ax25/ax25_route.c b/net/ax25/ax25_route.c index b40e0bce67ea..d0b2e094bd55 100644 --- a/net/ax25/ax25_route.c +++ b/net/ax25/ax25_route.c @@ -441,24 +441,17 @@ put: struct sk_buff *ax25_rt_build_path(struct sk_buff *skb, ax25_address *src, ax25_address *dest, ax25_digi *digi) { - struct sk_buff *skbn; unsigned char *bp; int len; len = digi->ndigi * AX25_ADDR_LEN; - if (skb_headroom(skb) < len) { - if ((skbn = skb_realloc_headroom(skb, len)) == NULL) { + if (unlikely(skb_headroom(skb) < len)) { + skb = skb_expand_head(skb, len); + if (!skb) { printk(KERN_CRIT "AX.25: ax25_dg_build_path - out of memory\n"); return NULL; } - - if (skb->sk != NULL) - skb_set_owner_w(skbn, skb->sk); - - consume_skb(skb); - - skb = skbn; } bp = skb_push(skb, len); |