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On Sun, Apr 21, 2024 at 1:06 PM Julian Anastasov <ja@xxxxxx> wrote:
>
>
> Hello,
Dear Julian,
Thanks a lot for the fast review and suggestions!
Kind regards,
Alex
>
> On Thu, 18 Apr 2024, Alexander Mikhalitsyn wrote:
>
> > Cc: Julian Anastasov <ja@xxxxxx>
> > Cc: Simon Horman <horms@xxxxxxxxxxxx>
> > Cc: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
> > Cc: Jozsef Kadlecsik <kadlec@xxxxxxxxxxxxx>
> > Cc: Florian Westphal <fw@xxxxxxxxx>
> > Suggested-by: Julian Anastasov <ja@xxxxxx>
> > Signed-off-by: Alexander Mikhalitsyn <aleksandr.mikhalitsyn@xxxxxxxxxxxxx>
>
> Looks good to me, thanks!
>
> Acked-by: Julian Anastasov <ja@xxxxxx>
>
> > ---
> > net/netfilter/ipvs/ip_vs_ctl.c | 14 +++++++-------
> > 1 file changed, 7 insertions(+), 7 deletions(-)
> >
> > diff --git a/net/netfilter/ipvs/ip_vs_ctl.c b/net/netfilter/ipvs/ip_vs_ctl.c
> > index 143a341bbc0a..32be24f0d4e4 100644
> > --- a/net/netfilter/ipvs/ip_vs_ctl.c
> > +++ b/net/netfilter/ipvs/ip_vs_ctl.c
> > @@ -94,6 +94,7 @@ static void update_defense_level(struct netns_ipvs *ipvs)
> > {
> > struct sysinfo i;
> > int availmem;
> > + int amemthresh;
> > int nomem;
> > int to_change = -1;
> >
> > @@ -105,7 +106,8 @@ static void update_defense_level(struct netns_ipvs
> > *ipvs)
> > /* si_swapinfo(&i); */
> > /* availmem = availmem - (i.totalswap - i.freeswap); */
> >
> > - nomem = (availmem < ipvs->sysctl_amemthresh);
> > + amemthresh = max(READ_ONCE(ipvs->sysctl_amemthresh), 0);
> > + nomem = (availmem < amemthresh);
> >
> > local_bh_disable();
> >
> > @@ -145,9 +147,8 @@ static void update_defense_level(struct netns_ipvs
> > *ipvs)
> > break;
> > case 1:
> > if (nomem) {
> > - ipvs->drop_rate = ipvs->drop_counter
> > - = ipvs->sysctl_amemthresh /
> > - (ipvs->sysctl_amemthresh-availmem);
> > + ipvs->drop_counter = amemthresh / (amemthresh -
> > availmem);
> > + ipvs->drop_rate = ipvs->drop_counter;
> > ipvs->sysctl_drop_packet = 2;
> > } else {
> > ipvs->drop_rate = 0;
> > @@ -155,9 +156,8 @@ static void update_defense_level(struct netns_ipvs
> > *ipvs)
> > break;
> > case 2:
> > if (nomem) {
> > - ipvs->drop_rate = ipvs->drop_counter
> > - = ipvs->sysctl_amemthresh /
> > - (ipvs->sysctl_amemthresh-availmem);
> > + ipvs->drop_counter = amemthresh / (amemthresh -
> > availmem);
> > + ipvs->drop_rate = ipvs->drop_counter;
> > } else {
> > ipvs->drop_rate = 0;
> > ipvs->sysctl_drop_packet = 1;
> > --
> > 2.34.1
>
> Regards
>
> --
> Julian Anastasov <ja@xxxxxx>
>
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