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From: Aaron Conole <aconole@redhat.com>
To: dev@dpdk.org
Cc: Konstantin Ananyev <konstantin.ananyev@intel.com>,
	Sunil Kumar Kori <skori@marvell.com>,
	Allain Legacy <allain.legacy@windriver.com>,
	Anatoly Burakov <anatoly.burakov@intel.com>,
	Chas Williams <chas3@att.com>,
	Piotr Azarewicz <piotrx.t.azarewicz@intel.com>,
	Bruce Richardson <bruce.richardson@intel.com>,
	David Marchand <david.marchand@redhat.com>
Subject: [dpdk-dev] [PATCH v2 2/4] ip_frag: ensure minimum v6 fragmentation length
Date: Wed,  1 Apr 2020 09:18:47 -0400	[thread overview]
Message-ID: <20200401131849.2209336-3-aconole@redhat.com> (raw)
In-Reply-To: <20200401131849.2209336-1-aconole@redhat.com>

Similar to v4, we should ensure that at least a minimum fragmentation
length can be achieved.

Signed-off-by: Aaron Conole <aconole@redhat.com>
---
 lib/librte_ip_frag/rte_ipv6_fragmentation.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/lib/librte_ip_frag/rte_ipv6_fragmentation.c b/lib/librte_ip_frag/rte_ipv6_fragmentation.c
index 43449970e5..820a5dc725 100644
--- a/lib/librte_ip_frag/rte_ipv6_fragmentation.c
+++ b/lib/librte_ip_frag/rte_ipv6_fragmentation.c
@@ -79,6 +79,17 @@ rte_ipv6_fragment_packet(struct rte_mbuf *pkt_in,
 	uint16_t fragment_offset, frag_size;
 	uint64_t frag_bytes_remaining;
 
+	/*
+	 * The rules on ipv6 fragmentation means we need at least to be
+	 * greater than the smallest fragment possible - ipv6hdr + frag header
+	 * + min octets.  We rely on the ipv6_extension_fragment header to
+	 * include 'data' octets.
+	 */
+	if (unlikely(mtu_size <
+		     (sizeof(struct rte_ipv6_hdr) +
+		      sizeof(struct ipv6_extension_fragment))))
+		return -EINVAL;
+
 	/*
 	 * Ensure the IP payload length of all fragments (except the
 	 * the last fragment) are a multiple of 8 bytes per RFC2460.
-- 
2.25.1


  parent reply	other threads:[~2020-04-01 13:19 UTC|newest]

Thread overview: 55+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-31 16:07 [dpdk-dev] [PATCH 0/4] ip_frag: add a unit test for fragmentation Aaron Conole
2020-03-31 16:07 ` [dpdk-dev] [PATCH 1/4] ip_frag: ensure minimum v4 fragmentation length Aaron Conole
2020-03-31 16:07 ` [dpdk-dev] [PATCH 2/4] ip_frag: ensure minimum v6 " Aaron Conole
2020-03-31 16:07 ` [dpdk-dev] [PATCH 3/4] ip_frag: ipv6 fragments must not be resubmitted to fragmentation Aaron Conole
2020-03-31 16:07 ` [dpdk-dev] [PATCH 4/4] ipfrag: add unit test case Aaron Conole
     [not found]   ` <20200331200715.13751-1-robot@bytheb.org>
2020-03-31 21:12     ` [dpdk-dev] |WARNING| pw67494 " Aaron Conole
2020-04-01 13:18 ` [dpdk-dev] [PATCH v2 0/4] ip_frag: add a unit test for fragmentation Aaron Conole
2020-04-01 13:18   ` [dpdk-dev] [PATCH v2 1/4] ip_frag: ensure minimum v4 fragmentation length Aaron Conole
2020-04-01 13:18   ` Aaron Conole [this message]
2020-04-01 13:18   ` [dpdk-dev] [PATCH v2 3/4] ip_frag: ipv6 fragments must not be resubmitted to fragmentation Aaron Conole
2020-04-01 13:18   ` [dpdk-dev] [PATCH v2 4/4] ipfrag: add unit test case Aaron Conole
2020-04-01 18:39   ` [dpdk-dev] [PATCH v3 0/4] ip_frag: add a unit test for fragmentation Aaron Conole
2020-04-01 18:39     ` [dpdk-dev] [PATCH v3 1/4] ip_frag: ensure minimum v4 fragmentation length Aaron Conole
2020-04-07 11:10       ` Ananyev, Konstantin
2020-04-07 12:52         ` Aaron Conole
2020-04-07 14:14           ` Ananyev, Konstantin
2020-04-07 18:41             ` Aaron Conole
2020-04-08 12:37               ` Ananyev, Konstantin
2020-04-08 15:45                 ` Aaron Conole
2020-04-01 18:39     ` [dpdk-dev] [PATCH v3 2/4] ip_frag: ensure minimum v6 " Aaron Conole
2020-04-07 10:48       ` Ananyev, Konstantin
2020-04-01 18:39     ` [dpdk-dev] [PATCH v3 3/4] ip_frag: ipv6 fragments must not be resubmitted to fragmentation Aaron Conole
2020-04-07 10:43       ` Ananyev, Konstantin
2020-04-07 12:40         ` Aaron Conole
2020-04-01 18:39     ` [dpdk-dev] [PATCH v3 4/4] ipfrag: add unit test case Aaron Conole
2020-04-04 15:58       ` Pavan Nikhilesh Bhagavatula
2020-04-15 17:25     ` [dpdk-dev] [PATCH v4 0/3] ip_frag: add a unit test for fragmentation Aaron Conole
2020-04-15 17:25       ` [dpdk-dev] [PATCH v4 1/3] ip_frag: ensure minimum v4 fragmentation length Aaron Conole
2020-04-17 11:52         ` Lukasz Wojciechowski
2020-04-15 17:25       ` [dpdk-dev] [PATCH v4 2/3] ip_frag: ensure minimum v6 " Aaron Conole
2020-04-17 11:52         ` Lukasz Wojciechowski
2020-04-15 17:25       ` [dpdk-dev] [PATCH v4 3/3] ipfrag: add unit test case Aaron Conole
2020-04-16 15:30         ` Lukasz Wojciechowski
2020-04-16 18:52           ` Aaron Conole
2020-04-17 13:14       ` [dpdk-dev] [PATCH v5 0/3] ip_frag: add a unit test for fragmentation Aaron Conole
2020-04-17 13:14         ` [dpdk-dev] [PATCH v5 1/3] ip_frag: ensure minimum v4 fragmentation length Aaron Conole
2020-04-20 12:50           ` Ananyev, Konstantin
2020-04-20 15:24             ` Aaron Conole
2020-04-17 13:14         ` [dpdk-dev] [PATCH v5 2/3] ip_frag: ensure minimum v6 " Aaron Conole
2020-04-20 12:53           ` Ananyev, Konstantin
2020-04-20 15:26             ` Aaron Conole
2020-04-20 15:43               ` Ananyev, Konstantin
2020-04-17 13:14         ` [dpdk-dev] [PATCH v5 3/3] ipfrag: add unit test case Aaron Conole
2020-04-17 14:14           ` Lukasz Wojciechowski
2020-04-20 16:03           ` Burakov, Anatoly
2020-04-20 17:34             ` Aaron Conole
2020-04-25 12:18               ` Thomas Monjalon
2020-04-20 19:25         ` [dpdk-dev] [PATCH v6 0/3] ip_frag: add a unit test for fragmentation Aaron Conole
2020-04-20 19:25           ` [dpdk-dev] [PATCH v6 1/3] ip_frag: ensure minimum v4 fragmentation length Aaron Conole
2020-04-21 11:04             ` Lukasz Wojciechowski
2020-04-20 19:25           ` [dpdk-dev] [PATCH v6 2/3] ip_frag: ensure minimum v6 " Aaron Conole
2020-04-21 11:04             ` Lukasz Wojciechowski
2020-04-20 19:25           ` [dpdk-dev] [PATCH v6 3/3] ipfrag: add unit test case Aaron Conole
2020-04-21 11:03             ` Lukasz Wojciechowski
2020-04-25 13:16           ` [dpdk-dev] [PATCH v6 0/3] ip_frag: add a unit test for fragmentation Thomas Monjalon

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