From: Amit Prakash Shukla <amitprakashs@marvell.com>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: Jerin Jacob Kollanukkaran <jerinj@marvell.com>,
Kiran Kumar Kokkilagadda <kirankumark@marvell.com>,
Nithin Kumar Dabilpuram <ndabilpuram@marvell.com>,
"dev@dpdk.org" <dev@dpdk.org>
Subject: RE: [EXT] Re: [RFC PATCH] graph: add support for pcap trace for graph
Date: Tue, 10 Jan 2023 11:26:37 +0000 [thread overview]
Message-ID: <PH0PR18MB51671FE49D2AEAE4739E3AA1C8FF9@PH0PR18MB5167.namprd18.prod.outlook.com> (raw)
In-Reply-To: <20230106105655.3eaa6129@hermes.local>
Thanks Stephen for the pointers. I will post next version of the patch with the change.
> -----Original Message-----
> From: Stephen Hemminger <stephen@networkplumber.org>
> Sent: Saturday, January 7, 2023 12:27 AM
> To: Amit Prakash Shukla <amitprakashs@marvell.com>
> Cc: Jerin Jacob Kollanukkaran <jerinj@marvell.com>; Kiran Kumar
> Kokkilagadda <kirankumark@marvell.com>; Nithin Kumar Dabilpuram
> <ndabilpuram@marvell.com>; dev@dpdk.org
> Subject: Re: [EXT] Re: [RFC PATCH] graph: add support for pcap trace for
> graph
>
> On Fri, 6 Jan 2023 10:40:30 +0000
> Amit Prakash Shukla <amitprakashs@marvell.com> wrote:
>
> > Thanks Stephen for the review. Sure, will use lib/pcapng.
> >
> > I see dpdk libpcapng adds most of the debugging data, however I would
> like to add a node name to the packets which I am thinking of adding using
> 'comment' option under 'Enhanced Packet Block' .
> >
> > Please let me know if that's fine.
> >
> > Thanks,
> > Amit Shukla
> >
> > > -----Original Message-----
> > > From: Stephen Hemminger <stephen@networkplumber.org>
> > > Sent: Friday, December 23, 2022 10:17 PM
> > > To: Amit Prakash Shukla <amitprakashs@marvell.com>
> > > Cc: Jerin Jacob Kollanukkaran <jerinj@marvell.com>; Kiran Kumar
> > > Kokkilagadda <kirankumark@marvell.com>; Nithin Kumar Dabilpuram
> > > <ndabilpuram@marvell.com>; dev@dpdk.org
> > > Subject: [EXT] Re: [RFC PATCH] graph: add support for pcap trace for
> > > graph
> > >
> > > External Email
> > >
> > > --------------------------------------------------------------------
> > > --
> > > On Fri, 23 Dec 2022 17:32:35 +0530
> > > Amit Prakash Shukla <amitprakashs@marvell.com> wrote:
> > >
> > > > +
> > > > + pcap_trace.file_descriptor = open(pcap_trace.file_name,
> > > > + O_CREAT | O_TRUNC | O_WRONLY,
> > > 0664);
> > > > + if (pcap_trace.file_descriptor < 0) {
> > > > + ret = 1;
> > > > + goto done;
> > > > + }
> > > > + pcap_trace.n_pcap_data_written = 0;
> > > > +
> > > > + /* Write file header. */
> > > > + memset(&file_hdr, 0, sizeof(file_hdr));
> > > > + file_hdr.magic = 0xa1b2c3d4;
> > > > + file_hdr.major_version = 2;
> > > > + file_hdr.minor_version = 4;
> > > > + file_hdr.time_zone = 0;
> > > > + file_hdr.max_packet_size_in_bytes = ((1 << 16) - 1);
> > > > + file_hdr.packet_type = pcap_trace.packet_type;
> > > > + n = write(pcap_trace.file_descriptor, &file_hdr, sizeof(file_hdr));
> > > > + if (n != sizeof(file_hdr)) {
> > > > + ret = 1;
> > > > + goto done;
> > > > + }
> > > > +
> > > > + while (pcap_trace.n_bytes > pcap_trace.n_pcap_data_written) {
> > > > + int n = pcap_trace.n_bytes -
> > > pcap_trace.n_pcap_data_written;
> > > > +
> > > > + n = write(pcap_trace.file_descriptor,
> > >
> > > NAK please use lib/pcapng rather than rolling your own pcap format
> > > code
>
> Something like this:
>
> diff --git a/lib/pcapng/rte_pcapng.c b/lib/pcapng/rte_pcapng.c index
> cb590ea0096c..216ad80f7ed6 100644
> --- a/lib/pcapng/rte_pcapng.c
> +++ b/lib/pcapng/rte_pcapng.c
> @@ -492,7 +492,8 @@ rte_pcapng_copy(uint16_t port_id, uint32_t queue,
> const struct rte_mbuf *md,
> struct rte_mempool *mp,
> uint32_t length, uint64_t cycles,
> - enum rte_pcapng_direction direction)
> + enum rte_pcapng_direction direction,
> + const char *comment)
> {
> struct pcapng_enhance_packet_block *epb;
> uint32_t orig_len, data_len, padding, flags; @@ -552,6 +553,8 @@
> rte_pcapng_copy(uint16_t port_id, uint32_t queue,
> optlen += pcapng_optlen(sizeof(queue));
> if (rss_hash)
> optlen += pcapng_optlen(sizeof(uint8_t) + sizeof(uint32_t));
> + if (comment)
> + optlen += pcapng_optlen(strlen(comment));
>
> /* reserve trailing options and block length */
> opt = (struct pcapng_option *)
> @@ -590,6 +593,10 @@ rte_pcapng_copy(uint16_t port_id, uint32_t queue,
> &hash_opt, sizeof(hash_opt));
> }
>
> + if (comment)
> + opt = pcapng_add_option(opt, PCAPNG_OPT_COMMENT,
> + comment, strlen(comment));
> +
> /* Note: END_OPT necessary here. Wireshark doesn't do it. */
>
> /* Add PCAPNG packet header */
> diff --git a/lib/pcapng/rte_pcapng.h b/lib/pcapng/rte_pcapng.h index
> 6b8aaffc6e0f..98f35e8ea177 100644
> --- a/lib/pcapng/rte_pcapng.h
> +++ b/lib/pcapng/rte_pcapng.h
> @@ -126,6 +126,8 @@ enum rte_pcapng_direction {
> * The timestamp in TSC cycles.
> * @param direction
> * The direction of the packer: receive, transmit or unknown.
> + * @param comment
> + * Optional: comment on packet
> *
> * @return
> * - The pointer to the new mbuf formatted for pcapng_write
> @@ -137,7 +139,8 @@ struct rte_mbuf *
> rte_pcapng_copy(uint16_t port_id, uint32_t queue,
> const struct rte_mbuf *m, struct rte_mempool *mp,
> uint32_t length, uint64_t timestamp,
> - enum rte_pcapng_direction direction);
> + enum rte_pcapng_direction direction,
> + const char *comment);
>
>
> /**
next prev parent reply other threads:[~2023-01-10 11:26 UTC|newest]
Thread overview: 47+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-12-23 12:02 Amit Prakash Shukla
2022-12-23 16:47 ` Stephen Hemminger
2023-01-06 10:40 ` [EXT] " Amit Prakash Shukla
2023-01-06 16:41 ` Stephen Hemminger
2023-01-06 18:56 ` Stephen Hemminger
2023-01-10 11:26 ` Amit Prakash Shukla [this message]
2023-01-10 11:58 ` [PATCH v1 1/3] pcapng: comment option support for epb Amit Prakash Shukla
2023-01-10 11:58 ` [PATCH v1 2/3] graph: pcap capture for graph nodes Amit Prakash Shukla
2023-01-10 11:58 ` [PATCH v1 3/3] l3fwd-graph: changes to configure pcap capture Amit Prakash Shukla
2023-01-10 17:05 ` [PATCH v1 1/3] pcapng: comment option support for epb Stephen Hemminger
2023-01-11 8:53 ` [PATCH v2 " Amit Prakash Shukla
2023-01-11 8:53 ` [PATCH v2 2/3] graph: pcap capture for graph nodes Amit Prakash Shukla
2023-01-11 16:07 ` Stephen Hemminger
2023-01-12 9:57 ` [EXT] " Amit Prakash Shukla
2023-01-12 16:30 ` Stephen Hemminger
2023-01-19 14:37 ` Amit Prakash Shukla
2023-01-19 16:48 ` Stephen Hemminger
2023-01-11 8:53 ` [PATCH v2 3/3] l3fwd-graph: changes to configure pcap capture Amit Prakash Shukla
2023-01-12 10:01 ` [PATCH v3 1/3] pcapng: comment option support for epb Amit Prakash Shukla
2023-01-12 10:01 ` [PATCH v3 2/3] graph: pcap capture for graph nodes Amit Prakash Shukla
2023-01-12 12:18 ` Jerin Jacob
2023-01-19 14:21 ` [EXT] " Amit Prakash Shukla
2023-01-12 10:01 ` [PATCH v3 3/3] l3fwd-graph: changes to configure pcap capture Amit Prakash Shukla
2023-01-24 11:21 ` [PATCH v4 1/3] pcapng: comment option support for epb Amit Prakash Shukla
2023-01-24 11:21 ` [PATCH v4 2/3] graph: pcap capture for graph nodes Amit Prakash Shukla
2023-01-31 8:06 ` Jerin Jacob
2023-02-03 8:15 ` [EXT] " Amit Prakash Shukla
2023-01-24 11:21 ` [PATCH v4 3/3] l3fwd-graph: changes to configure pcap capture Amit Prakash Shukla
2023-01-31 8:14 ` Jerin Jacob
2023-02-03 8:16 ` [EXT] " Amit Prakash Shukla
2023-02-03 8:19 ` [PATCH v5 1/3] pcapng: comment option support for epb Amit Prakash Shukla
2023-02-03 8:19 ` [PATCH v5 2/3] graph: pcap capture for graph nodes Amit Prakash Shukla
2023-02-09 9:12 ` David Marchand
2023-02-09 9:29 ` [EXT] " Amit Prakash Shukla
2023-02-03 8:19 ` [PATCH v5 3/3] examples/l3fwd-graph: changes to configure pcap capture Amit Prakash Shukla
2023-02-09 9:13 ` [PATCH v5 1/3] pcapng: comment option support for epb David Marchand
2023-02-09 16:48 ` Stephen Hemminger
2023-02-09 9:56 ` [PATCH v6 1/4] " Amit Prakash Shukla
2023-02-09 9:56 ` [PATCH v6 2/4] graph: pcap capture for graph nodes Amit Prakash Shukla
2023-02-09 9:56 ` [PATCH v6 3/4] examples/l3fwd-graph: changes to configure pcap capture Amit Prakash Shukla
2023-02-09 9:56 ` [PATCH v6 4/4] test/graph: initialize graph param variable Amit Prakash Shukla
2023-02-09 10:03 ` [PATCH v6 1/4] pcapng: comment option support for epb Amit Prakash Shukla
2023-02-09 10:24 ` [PATCH v7 1/3] " Amit Prakash Shukla
2023-02-09 10:24 ` [PATCH v7 2/3] graph: pcap capture for graph nodes Amit Prakash Shukla
2023-02-09 10:24 ` [PATCH v7 3/3] examples/l3fwd-graph: changes to configure pcap capture Amit Prakash Shukla
2023-02-09 17:28 ` Jerin Jacob
2023-02-10 12:18 ` David Marchand
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