Hi,
On Thu, Jul 18, 2019 at 10:05:52PM +0100, Jeremy Sowden wrote:
> Most members in the context doesn't change, so there is no need to
> memset it and reassign most of its members on every iteration. Moved
> that code out of the loop.
>
> Fixes: 49900d448ac9 ("libnftables: Move library stuff out of main.c")
This commit merely moved the code from src/main.c into the current
location. I would rather point at a72315d2bad47 ("src: add rule batching
support"), which introduced the loop (and already contains some of the
pointless assignments). Note that commit is from 2013. :)
> Reported-by: Pablo Neira Ayuso <pa...@netfilter.org>
> Signed-off-by: Jeremy Sowden <jer...@azazel.net>
> ---
> src/libnftables.c | 11 ++++-------
> 1 file changed, 4 insertions(+), 7 deletions(-)
>
> diff --git a/src/libnftables.c b/src/libnftables.c
> index 2f77a7709e2c..834ea661a146 100644
> --- a/src/libnftables.c
> +++ b/src/libnftables.c
> @@ -23,7 +23,7 @@ static int nft_netlink(struct nft_ctx *nft,
> {
> uint32_t batch_seqnum, seqnum = 0, num_cmds = 0;
> struct nftnl_batch *batch;
> - struct netlink_ctx ctx;
> + struct netlink_ctx ctx = { .msgs = msgs, .nft = nft };
Use '.list = LIST_HEAD_INIT(ctx.list),' here. Refer to cache_update() in
src/rule.c for inspiration. :)
> struct cmd *cmd;
> struct mnl_err *err, *tmp;
> LIST_HEAD(err_list);
> @@ -32,16 +32,13 @@ static int nft_netlink(struct nft_ctx *nft,
> if (list_empty(cmds))
> return 0;
>
> - batch = mnl_batch_init();
> + init_list_head(&ctx.list);
Drop this.
> +
> + ctx.batch = batch = mnl_batch_init();
Move ctx.batch init into declaration as well. Drop dedicated 'batch'
variable and replace by 'ctx.batch'.
Thanks, Phil
