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From: sabu kurian <sabu2kurian@gmail.com>
To: "dev@dpdk.org" <dev@dpdk.org>
Subject: [dpdk-dev] Segmentation Fault on printf()
Date: Fri, 14 Mar 2014 15:57:18 +0530	[thread overview]
Message-ID: <CAJ2bnfDcs9OiycSFcC9CvSihJ=u6vQt5ema_VMjseq-CiDsqBQ@mail.gmail.com> (raw)

Hello friends,

I'm trying to print the ether_type for a packet that I captured from a port
on my machine. Suppose 'm' holds the packet. 'm' is of type 'struct
rte_mbuf'. Intels API reference for DPDK says 'ether_type' is of uint16_t.
I used the following code to retrieve ether_type.

void * eth_type;
struct ether_hdr *eth;

eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
eth_type = &eth->ether_type;

printf("\n Type is %" PRIu16 , *((uint16_t *)eth_type));

rte_pktmbuf_free(m);

I get a 'Segmentation fault' when the printf() statement gets executed.
Where am I going wrong ?

Thanks in advance

             reply	other threads:[~2014-03-14 10:25 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-03-14 10:27 sabu kurian [this message]
2014-03-14 16:10 ` Chris Wright
2014-03-16 13:03   ` sabu kurian
2014-03-17 19:45     ` Daniel Kaminsky

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