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From: Thomas Monjalon <thomas@monjalon.net>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: dev@dpdk.org, dpdk stable <stable@dpdk.org>,
	"Medvedkin, Vladimir" <vladimir.medvedkin@intel.com>
Subject: Re: [PATCH] rib: fix traversal with /32 route
Date: Wed, 01 Jun 2022 09:04:43 +0200
Message-ID: <4423979.cEBGB3zze1@thomas> (raw)
In-Reply-To: <04cfa5fd-6e77-72df-f555-ea8f4d6a4b5b@intel.com>

26/04/2022 16:30, Medvedkin, Vladimir:
> Fixes: 5a5793a5ffa2 ("rib: add RIB library")
> 
> On 26/04/2022 15:28, Medvedkin, Vladimir wrote:
> > +Cc:stable@dpdk.org
> > 
> > On 14/04/2022 21:01, Stephen Hemminger wrote:
> >> If a /32 route is entered in the RIB the code to traverse
> >> will not see that a a end of the tree. This is due to trying
> >> to do a negative shift which is an undefined in C.
> >>
> >> Fix by checking for max depth as is already done in rib6.
> >>
> >> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> >> ---
> >>   lib/rib/rte_rib.c | 2 ++
> >>   1 file changed, 2 insertions(+)
> >>
> >> diff --git a/lib/rib/rte_rib.c b/lib/rib/rte_rib.c
> >> index cd9e823068d2..0603980cabd2 100644
> >> --- a/lib/rib/rte_rib.c
> >> +++ b/lib/rib/rte_rib.c
> >> @@ -71,6 +71,8 @@ is_covered(uint32_t ip1, uint32_t ip2, uint8_t depth)
> >>   static inline struct rte_rib_node *
> >>   get_nxt_node(struct rte_rib_node *node, uint32_t ip)
> >>   {
> >> +    if (node->depth == RIB_MAXDEPTH)
> >> +        return NULL;
> >>       return (ip & (1 << (31 - node->depth))) ? node->right : node->left;
> >>   }
> > 
> > Acked-by: Vladimir Medvedkin <vladimir.medvedkin@intel.com>

Applied, thanks.




      reply	other threads:[~2022-06-01  7:04 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <20220414200104.245071-1-stephen@networkplumber.org>
2022-04-26 14:28 ` Medvedkin, Vladimir
2022-04-26 14:30   ` Medvedkin, Vladimir
2022-06-01  7:04     ` Thomas Monjalon [this message]

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