* [dpdk-stable] [PATCH v2] l2fwd-crypto: fix packet length while decryption
[not found] <20210223061244.22627-1-hemant.agrawal@nxp.com>
@ 2021-04-09 13:14 ` Hemant Agrawal
2021-04-13 12:58 ` [dpdk-stable] [EXT] " Akhil Goyal
0 siblings, 1 reply; 2+ messages in thread
From: Hemant Agrawal @ 2021-04-09 13:14 UTC (permalink / raw)
To: dev, gakhil; +Cc: stable, Rohit Raj
From: Rohit Raj <rohit.raj@nxp.com>
There were some padding left when a packet gets decrypted. This
patch removes those padding.
This patch also removes the padding left after verifying auth of
the packet.
Fixes: e2cdfbd07c8a ("examples/l2fwd-crypto: fix port id type")
Cc: stable@dpdk.org
Signed-off-by: Rohit Raj <rohit.raj@nxp.com>
---
examples/l2fwd-crypto/main.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/examples/l2fwd-crypto/main.c b/examples/l2fwd-crypto/main.c
index 1016ceb841..23a398043e 100644
--- a/examples/l2fwd-crypto/main.c
+++ b/examples/l2fwd-crypto/main.c
@@ -616,12 +616,26 @@ l2fwd_simple_forward(struct rte_mbuf *m, uint16_t portid,
struct l2fwd_crypto_options *options)
{
uint16_t dst_port;
+ uint32_t pad_len;
+ struct rte_ipv4_hdr *ip_hdr;
+ uint32_t ipdata_offset = sizeof(struct rte_ether_hdr);
+ ip_hdr = (struct rte_ipv4_hdr *)(rte_pktmbuf_mtod(m, char *) +
+ ipdata_offset);
dst_port = l2fwd_dst_ports[portid];
if (options->mac_updating)
l2fwd_mac_updating(m, dst_port);
+ if (options->auth_xform.auth.op == RTE_CRYPTO_AUTH_OP_VERIFY)
+ rte_pktmbuf_trim(m, options->auth_xform.auth.digest_length);
+
+ if (options->cipher_xform.cipher.op == RTE_CRYPTO_CIPHER_OP_DECRYPT) {
+ pad_len = m->pkt_len - rte_be_to_cpu_16(ip_hdr->total_length) -
+ ipdata_offset;
+ rte_pktmbuf_trim(m, pad_len);
+ }
+
l2fwd_send_packet(m, dst_port);
}
--
2.17.1
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