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(parent: 5f6da12) | patch
ipv6: optimise dst refcounting on skb init
authorPavel Begunkov <asml.silence@gmail.com>
Thu, 27 Jan 2022 00:36:22 +0000 (00:36 +0000)
committerJakub Kicinski <kuba@kernel.org>
Fri, 28 Jan 2022 03:46:10 +0000 (19:46 -0800)
commit97f4b7a287f4d8db251da84ba7586b12f9f1ed82
tree53cded77bfc603a21aa8008e2b0a0afade5dcb69tree | snapshot
parent5f6da125e3fd92b34b1ea2eff6cadd378869fb54commit | diff
ipv6: optimise dst refcounting on skb init

__ip6_make_skb() gets a cork->dst ref, hands it over to skb and shortly
after puts cork->dst. Save two atomics by stealing it without extra
referencing, ip6_cork_release() handles NULL cork->dst.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Reviewed-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
net/ipv6/ip6_output.c diff | blob | history
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