[dpdk-dev] [PATCH v2] net/pcap: truncate packet if it is too large
Zhike Wang
wangzk320 at 163.com
Mon Dec 9 02:53:09 CET 2019
From: Zhike Wang <wangzhike at jd.com>
Previously large packet would be dropped, instead now it is better to keep it via truncating it.
Signed-off-by: Zhike Wang <wangzk320 at 163.com>
---
drivers/net/pcap/rte_eth_pcap.c | 16 ++++++----------
1 file changed, 6 insertions(+), 10 deletions(-)
diff --git a/drivers/net/pcap/rte_eth_pcap.c b/drivers/net/pcap/rte_eth_pcap.c
index aa7ef6f..b4c79d1 100644
--- a/drivers/net/pcap/rte_eth_pcap.c
+++ b/drivers/net/pcap/rte_eth_pcap.c
@@ -313,7 +313,7 @@ struct pmd_devargs_all {
struct pcap_pkthdr header;
pcap_dumper_t *dumper;
unsigned char temp_data[RTE_ETH_PCAP_SNAPLEN];
- size_t len;
+ size_t len, caplen;
pp = rte_eth_devices[dumper_q->port_id].process_private;
dumper = pp->tx_dumper[dumper_q->queue_id];
@@ -325,28 +325,24 @@ struct pmd_devargs_all {
* dumper */
for (i = 0; i < nb_pkts; i++) {
mbuf = bufs[i];
- len = rte_pktmbuf_pkt_len(mbuf);
+ len = caplen = rte_pktmbuf_pkt_len(mbuf);
if (unlikely(!rte_pktmbuf_is_contiguous(mbuf) &&
len > sizeof(temp_data))) {
- PMD_LOG(ERR,
- "Dropping multi segment PCAP packet. Size (%zd) > max size (%zd).",
- len, sizeof(temp_data));
- rte_pktmbuf_free(mbuf);
- continue;
+ caplen = sizeof(temp_data);
}
calculate_timestamp(&header.ts);
header.len = len;
- header.caplen = header.len;
+ header.caplen = caplen;
/* rte_pktmbuf_read() returns a pointer to the data directly
* in the mbuf (when the mbuf is contiguous) or, otherwise,
* a pointer to temp_data after copying into it.
*/
pcap_dump((u_char *)dumper, &header,
- rte_pktmbuf_read(mbuf, 0, len, temp_data));
+ rte_pktmbuf_read(mbuf, 0, caplen, temp_data));
num_tx++;
- tx_bytes += len;
+ tx_bytes += caplen;
rte_pktmbuf_free(mbuf);
}
--
1.8.3.1
More information about the dev
mailing list