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From: "Iremonger, Bernard" <bernard.iremonger@intel.com>
To: Stephen Hemminger <stephen@networkplumber.org>, "dev@dpdk.org"
 <dev@dpdk.org>
Thread-Topic: [dpdk-dev] [PATCH v5 1/3] app/testpmd: add ability to set Tx
 IP and	UDP parameters
Thread-Index: AQHU7wD76dikj9iRL0WbxZcQQDSM+aY1IbGQ
Date: Wed, 10 Apr 2019 10:07:42 +0000
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References: <20190402203907.28679-1-stephen@networkplumber.org>
 <20190409182006.12944-1-stephen@networkplumber.org>
 <20190409182006.12944-2-stephen@networkplumber.org>
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Subject: Re: [dpdk-dev] [PATCH v5 1/3] app/testpmd: add ability to set Tx IP
 and	UDP parameters
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Hi Stephen,

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Stephen
> Hemminger
> Sent: Tuesday, April 9, 2019 7:20 PM
> To: dev@dpdk.org
> Cc: Stephen Hemminger <stephen@networkplumber.org>
> Subject: [dpdk-dev] [PATCH v5 1/3] app/testpmd: add ability to set Tx IP =
and
> UDP parameters
>=20
> This patch changes what testpmd uses as IP addresses when run in transmit
> only mode. The old code was using
> 192.168.0.1 -> 192.168.0.2
> but these addresses are reserved for private Internet by RFC 1918.
>=20
> The new code uses 192.18.0.1 and 192.18.0.2 which are on the subnet
> reserved for performance testing by RFC 2544.
>=20
> New command line option allows the user to pick any other src/dst address
> desired.
>=20
> Notice: this changes the default IP address for transmit only.
> It may cause some user who has hardcoded network addresses to report a
> regression.
>=20
> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> ---
> v5 -- rebase to 19.05-rc1 and fix reword commit message
>=20
>  app/test-pmd/parameters.c             | 49 +++++++++++++++++++++++++++
>  app/test-pmd/testpmd.h                |  6 ++++
>  app/test-pmd/txonly.c                 | 20 ++++++-----
>  doc/guides/testpmd_app_ug/run_app.rst | 12 ++++++-
>  4 files changed, 77 insertions(+), 10 deletions(-)
>=20
> diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c index
> 7b6b60905dce..8b523a5c66ed 100644
> --- a/app/test-pmd/parameters.c
> +++ b/app/test-pmd/parameters.c
> @@ -19,6 +19,7 @@
>  #include <stdint.h>
>  #include <unistd.h>
>  #include <inttypes.h>
> +#include <arpa/inet.h>
>=20
>  #include <rte_common.h>
>  #include <rte_byteorder.h>
> @@ -65,6 +66,7 @@ usage(char* progname)
>  #ifdef RTE_LIBRTE_CMDLINE
>  	       "--eth-peers-configfile=3D | "
>  	       "--eth-peer=3DX,M:M:M:M:M:M | "
> +	       "--tx-ip=3DSRC,DST | --tx-udp=3DPORT | "
>  #endif
>  	       "--pkt-filter-mode=3D |"
>  	       "--rss-ip | --rss-udp | "
> @@ -645,6 +647,8 @@ launch_args_parse(int argc, char** argv)
>  		{ "mlockall",			0, 0, 0 },
>  		{ "no-mlockall",		0, 0, 0 },
>  		{ "mp-alloc",			1, 0, 0 },
> +		{ "tx-ip",			1, 0, 0 },
> +		{ "tx-udp",			1, 0, 0 },
>  		{ "noisy-tx-sw-buffer-size",	1, 0, 0 },
>  		{ "noisy-tx-sw-buffer-flushtime", 1, 0, 0 },
>  		{ "noisy-lkup-memory",		1, 0, 0 },
> @@ -743,6 +747,51 @@ launch_args_parse(int argc, char** argv)
>  				nb_peer_eth_addrs++;
>  			}
>  #endif
> +			if (!strcmp(lgopts[opt_idx].name, "tx-ip")) {
> +				struct in_addr in;
> +				char *end;
> +
> +				end =3D strchr(optarg, ',');
> +				if (end =3D=3D optarg || !end)
> +					rte_exit(EXIT_FAILURE,
> +						 "Invalid tx-ip: %s", optarg);
> +
> +				*end++ =3D 0;
> +				if (inet_aton(optarg, &in) =3D=3D 0)
> +					rte_exit(EXIT_FAILURE,
> +						 "Invalid source IP address:
> %s\n", optarg);
> +				tx_ip_src_addr =3D
> rte_be_to_cpu_32(in.s_addr);
> +
> +				if (inet_aton(end, &in) =3D=3D 0)
> +					rte_exit(EXIT_FAILURE,
> +						 "Invalid destination IP
> address: %s\n", optarg);
> +				tx_ip_dst_addr =3D
> rte_be_to_cpu_32(in.s_addr);
> +			}
> +			if (!strcmp(lgopts[opt_idx].name, "tx-udp")) {
> +				char *end =3D NULL;
> +
> +				errno =3D 0;
> +				n =3D strtoul(optarg, &end, 10);
> +				if (errno !=3D 0 || end =3D=3D optarg || n >
> UINT16_MAX ||
> +				    !(*end =3D=3D '\0' || *end =3D=3D ','))
> +					rte_exit(EXIT_FAILURE,
> +						 "Invalid UDP port: %s\n",
> optarg);
> +				tx_udp_src_port =3D n;
> +				if (*end =3D=3D ',') {
> +					char *dst =3D end + 1;
> +
> +					n =3D strtoul(dst, &end, 10);
> +					if (errno !=3D 0 || end =3D=3D dst ||
> +					    n > UINT16_MAX || *end)
> +						rte_exit(EXIT_FAILURE,
> +							 "Invalid destination
> UDP port: %s\n",
> +							 dst);
> +					tx_udp_dst_port =3D n;
> +				} else {
> +					tx_udp_dst_port =3D n;
> +				}
> +
> +			}
>  			if (!strcmp(lgopts[opt_idx].name, "nb-ports")) {
>  				n =3D atoi(optarg);
>  				if (n > 0 && n <=3D nb_ports)
> diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h index
> a45988ebc524..18d2c1ef1eaf 100644
> --- a/app/test-pmd/testpmd.h
> +++ b/app/test-pmd/testpmd.h
> @@ -443,6 +443,12 @@ extern int8_t tx_pthresh;  extern int8_t tx_hthresh;
> extern int8_t tx_wthresh;
>=20
> +extern uint16_t tx_udp_src_port;
> +extern uint16_t tx_udp_dst_port;
> +
> +extern uint32_t tx_ip_src_addr;
> +extern uint32_t tx_ip_dst_addr;
> +
>  extern struct fwd_config cur_fwd_config;  extern struct fwd_engine
> *cur_fwd_eng;  extern uint32_t retry_enabled; diff --git a/app/test-
> pmd/txonly.c b/app/test-pmd/txonly.c index 66e63788a25e..632d655235f0
> 100644
> --- a/app/test-pmd/txonly.c
> +++ b/app/test-pmd/txonly.c
> @@ -40,11 +40,13 @@
>=20
>  #include "testpmd.h"
>=20
> -#define UDP_SRC_PORT 1024
> -#define UDP_DST_PORT 1024
> +/* use RFC863 Discard Protocol */
> +uint16_t tx_udp_src_port =3D 9;
> +uint16_t tx_udp_dst_port =3D 9;
>=20
> -#define IP_SRC_ADDR ((192U << 24) | (168 << 16) | (0 << 8) | 1) -#define
> IP_DST_ADDR ((192U << 24) | (168 << 16) | (0 << 8) | 2)
> +/* use RFC5735 / RFC2544 reserved network test addresses */ uint32_t
> +tx_ip_src_addr =3D (192U << 24) | (18 << 16) | (0 << 8) | 1; uint32_t
> +tx_ip_dst_addr =3D (192U << 24) | (18 << 16) | (0 << 8) | 2;
>=20
>  #define IP_DEFTTL  64   /* from RFC 1340. */
>  #define IP_VERSION 0x40
> @@ -105,8 +107,8 @@ setup_pkt_udp_ip_headers(struct ipv4_hdr *ip_hdr,
>  	 * Initialize UDP header.
>  	 */
>  	pkt_len =3D (uint16_t) (pkt_data_len + sizeof(struct udp_hdr));
> -	udp_hdr->src_port =3D rte_cpu_to_be_16(UDP_SRC_PORT);
> -	udp_hdr->dst_port =3D rte_cpu_to_be_16(UDP_DST_PORT);
> +	udp_hdr->src_port =3D rte_cpu_to_be_16(tx_udp_src_port);
> +	udp_hdr->dst_port =3D rte_cpu_to_be_16(tx_udp_dst_port);
>  	udp_hdr->dgram_len      =3D RTE_CPU_TO_BE_16(pkt_len);
>  	udp_hdr->dgram_cksum    =3D 0; /* No UDP checksum. */
>=20
> @@ -121,8 +123,8 @@ setup_pkt_udp_ip_headers(struct ipv4_hdr *ip_hdr,
>  	ip_hdr->next_proto_id =3D IPPROTO_UDP;
>  	ip_hdr->packet_id =3D 0;
>  	ip_hdr->total_length   =3D RTE_CPU_TO_BE_16(pkt_len);
> -	ip_hdr->src_addr =3D rte_cpu_to_be_32(IP_SRC_ADDR);
> -	ip_hdr->dst_addr =3D rte_cpu_to_be_32(IP_DST_ADDR);
> +	ip_hdr->src_addr =3D rte_cpu_to_be_32(tx_ip_src_addr);
> +	ip_hdr->dst_addr =3D rte_cpu_to_be_32(tx_ip_dst_addr);
>=20
>  	/*
>  	 * Compute IP header checksum.
> @@ -206,7 +208,7 @@ pkt_burst_prepare(struct rte_mbuf *pkt, struct
> rte_mempool *mbp,
>  		 * packet generator for developer's quick performance
>  		 * regression test.
>  		 */
> -		addr =3D (IP_DST_ADDR | (ip_var++ << 8)) + rte_lcore_id();
> +		addr =3D (tx_ip_dst_addr | (ip_var++ << 8)) + rte_lcore_id();
>  		ip_hdr->src_addr =3D rte_cpu_to_be_32(addr);
>  	}
>  	copy_buf_to_pkt(&pkt_udp_hdr, sizeof(pkt_udp_hdr), pkt, diff --git
> a/doc/guides/testpmd_app_ug/run_app.rst
> b/doc/guides/testpmd_app_ug/run_app.rst
> index b717b8c7b742..a72f94923210 100644
> --- a/doc/guides/testpmd_app_ug/run_app.rst
> +++ b/doc/guides/testpmd_app_ug/run_app.rst
> @@ -121,12 +121,22 @@ The commandline options are:
>         XX:XX:XX:XX:XX:02
>         ...
>=20
> -
>  *   ``--eth-peer=3DN,XX:XX:XX:XX:XX:XX``
>=20
>      Set the MAC address ``XX:XX:XX:XX:XX:XX`` of the peer port N,
>      where 0 <=3D N < ``CONFIG_RTE_MAX_ETHPORTS`` from the configuration
> file.
>=20
> +*   ``--tx-ip=3DSRC,DST``

An extra blank line is needed here for correct formatting in the output HTM=
L

> +    Set the source and destination IP address used when doing transmit o=
nly
> test.
> +    The defaults address values are source 192.18.0.1 and
> +    destination 192.18.0.2. These are special purpose addresses
> +    reserved for benchmakring (RFC 2544).
> +
> +*   ``--tx-udp=3DSRC[,DST]``

An extra blank line is needed here for correct formatting in the output HTM=
L

> +    Set the source and destination UDP port number for transmit test onl=
y
> test.
> +    The default port is the port 9 which is defined for the discard prot=
ocol
> +    (RFC 863).
> +
>  *   ``--pkt-filter-mode=3Dmode``
>=20
>      Set Flow Director mode where mode is either ``none`` (the default),
> ``signature`` or ``perfect``.
> --
> 2.17.1

./dpdk/devtools/checkpatches.sh is showing some lines over 80 characters in=
 parameters.c

### [dpdk-dev] [PATCH v5 1/3] app/testpmd: add ability to set Tx IP and UDP=
 parameters

WARNING:LONG_LINE: line over 80 characters
#88: FILE: app/test-pmd/parameters.c:762:
+                                                "Invalid source IP address=
: %s\n", optarg);

WARNING:LONG_LINE: line over 80 characters
#93: FILE: app/test-pmd/parameters.c:767:
+                                                "Invalid destination IP ad=
dress: %s\n", optarg);

WARNING:LONG_LINE: line over 80 characters
#101: FILE: app/test-pmd/parameters.c:775:
+                               if (errno !=3D 0 || end =3D=3D optarg || n =
> UINT16_MAX ||

WARNING:LONG_LINE: line over 80 characters
#104: FILE: app/test-pmd/parameters.c:778:
+                                                "Invalid UDP port: %s\n", =
optarg);

total: 0 errors, 4 warnings, 153 lines checked

Regards,

Bernard.

From mboxrd@z Thu Jan  1 00:00:00 1970
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From: "Iremonger, Bernard" <bernard.iremonger@intel.com>
To: Stephen Hemminger <stephen@networkplumber.org>, "dev@dpdk.org"
 <dev@dpdk.org>
Thread-Topic: [dpdk-dev] [PATCH v5 1/3] app/testpmd: add ability to set Tx
 IP and	UDP parameters
Thread-Index: AQHU7wD76dikj9iRL0WbxZcQQDSM+aY1IbGQ
Date: Wed, 10 Apr 2019 10:07:42 +0000
Message-ID:
 <8CEF83825BEC744B83065625E567D7C260D87561@IRSMSX108.ger.corp.intel.com>
References: <20190402203907.28679-1-stephen@networkplumber.org>
 <20190409182006.12944-1-stephen@networkplumber.org>
 <20190409182006.12944-2-stephen@networkplumber.org>
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Subject: Re: [dpdk-dev] [PATCH v5 1/3] app/testpmd: add ability to set Tx IP
 and	UDP parameters
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Hi Stephen,

> -----Original Message-----
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Stephen
> Hemminger
> Sent: Tuesday, April 9, 2019 7:20 PM
> To: dev@dpdk.org
> Cc: Stephen Hemminger <stephen@networkplumber.org>
> Subject: [dpdk-dev] [PATCH v5 1/3] app/testpmd: add ability to set Tx IP =
and
> UDP parameters
>=20
> This patch changes what testpmd uses as IP addresses when run in transmit
> only mode. The old code was using
> 192.168.0.1 -> 192.168.0.2
> but these addresses are reserved for private Internet by RFC 1918.
>=20
> The new code uses 192.18.0.1 and 192.18.0.2 which are on the subnet
> reserved for performance testing by RFC 2544.
>=20
> New command line option allows the user to pick any other src/dst address
> desired.
>=20
> Notice: this changes the default IP address for transmit only.
> It may cause some user who has hardcoded network addresses to report a
> regression.
>=20
> Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
> ---
> v5 -- rebase to 19.05-rc1 and fix reword commit message
>=20
>  app/test-pmd/parameters.c             | 49 +++++++++++++++++++++++++++
>  app/test-pmd/testpmd.h                |  6 ++++
>  app/test-pmd/txonly.c                 | 20 ++++++-----
>  doc/guides/testpmd_app_ug/run_app.rst | 12 ++++++-
>  4 files changed, 77 insertions(+), 10 deletions(-)
>=20
> diff --git a/app/test-pmd/parameters.c b/app/test-pmd/parameters.c index
> 7b6b60905dce..8b523a5c66ed 100644
> --- a/app/test-pmd/parameters.c
> +++ b/app/test-pmd/parameters.c
> @@ -19,6 +19,7 @@
>  #include <stdint.h>
>  #include <unistd.h>
>  #include <inttypes.h>
> +#include <arpa/inet.h>
>=20
>  #include <rte_common.h>
>  #include <rte_byteorder.h>
> @@ -65,6 +66,7 @@ usage(char* progname)
>  #ifdef RTE_LIBRTE_CMDLINE
>  	       "--eth-peers-configfile=3D | "
>  	       "--eth-peer=3DX,M:M:M:M:M:M | "
> +	       "--tx-ip=3DSRC,DST | --tx-udp=3DPORT | "
>  #endif
>  	       "--pkt-filter-mode=3D |"
>  	       "--rss-ip | --rss-udp | "
> @@ -645,6 +647,8 @@ launch_args_parse(int argc, char** argv)
>  		{ "mlockall",			0, 0, 0 },
>  		{ "no-mlockall",		0, 0, 0 },
>  		{ "mp-alloc",			1, 0, 0 },
> +		{ "tx-ip",			1, 0, 0 },
> +		{ "tx-udp",			1, 0, 0 },
>  		{ "noisy-tx-sw-buffer-size",	1, 0, 0 },
>  		{ "noisy-tx-sw-buffer-flushtime", 1, 0, 0 },
>  		{ "noisy-lkup-memory",		1, 0, 0 },
> @@ -743,6 +747,51 @@ launch_args_parse(int argc, char** argv)
>  				nb_peer_eth_addrs++;
>  			}
>  #endif
> +			if (!strcmp(lgopts[opt_idx].name, "tx-ip")) {
> +				struct in_addr in;
> +				char *end;
> +
> +				end =3D strchr(optarg, ',');
> +				if (end =3D=3D optarg || !end)
> +					rte_exit(EXIT_FAILURE,
> +						 "Invalid tx-ip: %s", optarg);
> +
> +				*end++ =3D 0;
> +				if (inet_aton(optarg, &in) =3D=3D 0)
> +					rte_exit(EXIT_FAILURE,
> +						 "Invalid source IP address:
> %s\n", optarg);
> +				tx_ip_src_addr =3D
> rte_be_to_cpu_32(in.s_addr);
> +
> +				if (inet_aton(end, &in) =3D=3D 0)
> +					rte_exit(EXIT_FAILURE,
> +						 "Invalid destination IP
> address: %s\n", optarg);
> +				tx_ip_dst_addr =3D
> rte_be_to_cpu_32(in.s_addr);
> +			}
> +			if (!strcmp(lgopts[opt_idx].name, "tx-udp")) {
> +				char *end =3D NULL;
> +
> +				errno =3D 0;
> +				n =3D strtoul(optarg, &end, 10);
> +				if (errno !=3D 0 || end =3D=3D optarg || n >
> UINT16_MAX ||
> +				    !(*end =3D=3D '\0' || *end =3D=3D ','))
> +					rte_exit(EXIT_FAILURE,
> +						 "Invalid UDP port: %s\n",
> optarg);
> +				tx_udp_src_port =3D n;
> +				if (*end =3D=3D ',') {
> +					char *dst =3D end + 1;
> +
> +					n =3D strtoul(dst, &end, 10);
> +					if (errno !=3D 0 || end =3D=3D dst ||
> +					    n > UINT16_MAX || *end)
> +						rte_exit(EXIT_FAILURE,
> +							 "Invalid destination
> UDP port: %s\n",
> +							 dst);
> +					tx_udp_dst_port =3D n;
> +				} else {
> +					tx_udp_dst_port =3D n;
> +				}
> +
> +			}
>  			if (!strcmp(lgopts[opt_idx].name, "nb-ports")) {
>  				n =3D atoi(optarg);
>  				if (n > 0 && n <=3D nb_ports)
> diff --git a/app/test-pmd/testpmd.h b/app/test-pmd/testpmd.h index
> a45988ebc524..18d2c1ef1eaf 100644
> --- a/app/test-pmd/testpmd.h
> +++ b/app/test-pmd/testpmd.h
> @@ -443,6 +443,12 @@ extern int8_t tx_pthresh;  extern int8_t tx_hthresh;
> extern int8_t tx_wthresh;
>=20
> +extern uint16_t tx_udp_src_port;
> +extern uint16_t tx_udp_dst_port;
> +
> +extern uint32_t tx_ip_src_addr;
> +extern uint32_t tx_ip_dst_addr;
> +
>  extern struct fwd_config cur_fwd_config;  extern struct fwd_engine
> *cur_fwd_eng;  extern uint32_t retry_enabled; diff --git a/app/test-
> pmd/txonly.c b/app/test-pmd/txonly.c index 66e63788a25e..632d655235f0
> 100644
> --- a/app/test-pmd/txonly.c
> +++ b/app/test-pmd/txonly.c
> @@ -40,11 +40,13 @@
>=20
>  #include "testpmd.h"
>=20
> -#define UDP_SRC_PORT 1024
> -#define UDP_DST_PORT 1024
> +/* use RFC863 Discard Protocol */
> +uint16_t tx_udp_src_port =3D 9;
> +uint16_t tx_udp_dst_port =3D 9;
>=20
> -#define IP_SRC_ADDR ((192U << 24) | (168 << 16) | (0 << 8) | 1) -#define
> IP_DST_ADDR ((192U << 24) | (168 << 16) | (0 << 8) | 2)
> +/* use RFC5735 / RFC2544 reserved network test addresses */ uint32_t
> +tx_ip_src_addr =3D (192U << 24) | (18 << 16) | (0 << 8) | 1; uint32_t
> +tx_ip_dst_addr =3D (192U << 24) | (18 << 16) | (0 << 8) | 2;
>=20
>  #define IP_DEFTTL  64   /* from RFC 1340. */
>  #define IP_VERSION 0x40
> @@ -105,8 +107,8 @@ setup_pkt_udp_ip_headers(struct ipv4_hdr *ip_hdr,
>  	 * Initialize UDP header.
>  	 */
>  	pkt_len =3D (uint16_t) (pkt_data_len + sizeof(struct udp_hdr));
> -	udp_hdr->src_port =3D rte_cpu_to_be_16(UDP_SRC_PORT);
> -	udp_hdr->dst_port =3D rte_cpu_to_be_16(UDP_DST_PORT);
> +	udp_hdr->src_port =3D rte_cpu_to_be_16(tx_udp_src_port);
> +	udp_hdr->dst_port =3D rte_cpu_to_be_16(tx_udp_dst_port);
>  	udp_hdr->dgram_len      =3D RTE_CPU_TO_BE_16(pkt_len);
>  	udp_hdr->dgram_cksum    =3D 0; /* No UDP checksum. */
>=20
> @@ -121,8 +123,8 @@ setup_pkt_udp_ip_headers(struct ipv4_hdr *ip_hdr,
>  	ip_hdr->next_proto_id =3D IPPROTO_UDP;
>  	ip_hdr->packet_id =3D 0;
>  	ip_hdr->total_length   =3D RTE_CPU_TO_BE_16(pkt_len);
> -	ip_hdr->src_addr =3D rte_cpu_to_be_32(IP_SRC_ADDR);
> -	ip_hdr->dst_addr =3D rte_cpu_to_be_32(IP_DST_ADDR);
> +	ip_hdr->src_addr =3D rte_cpu_to_be_32(tx_ip_src_addr);
> +	ip_hdr->dst_addr =3D rte_cpu_to_be_32(tx_ip_dst_addr);
>=20
>  	/*
>  	 * Compute IP header checksum.
> @@ -206,7 +208,7 @@ pkt_burst_prepare(struct rte_mbuf *pkt, struct
> rte_mempool *mbp,
>  		 * packet generator for developer's quick performance
>  		 * regression test.
>  		 */
> -		addr =3D (IP_DST_ADDR | (ip_var++ << 8)) + rte_lcore_id();
> +		addr =3D (tx_ip_dst_addr | (ip_var++ << 8)) + rte_lcore_id();
>  		ip_hdr->src_addr =3D rte_cpu_to_be_32(addr);
>  	}
>  	copy_buf_to_pkt(&pkt_udp_hdr, sizeof(pkt_udp_hdr), pkt, diff --git
> a/doc/guides/testpmd_app_ug/run_app.rst
> b/doc/guides/testpmd_app_ug/run_app.rst
> index b717b8c7b742..a72f94923210 100644
> --- a/doc/guides/testpmd_app_ug/run_app.rst
> +++ b/doc/guides/testpmd_app_ug/run_app.rst
> @@ -121,12 +121,22 @@ The commandline options are:
>         XX:XX:XX:XX:XX:02
>         ...
>=20
> -
>  *   ``--eth-peer=3DN,XX:XX:XX:XX:XX:XX``
>=20
>      Set the MAC address ``XX:XX:XX:XX:XX:XX`` of the peer port N,
>      where 0 <=3D N < ``CONFIG_RTE_MAX_ETHPORTS`` from the configuration
> file.
>=20
> +*   ``--tx-ip=3DSRC,DST``

An extra blank line is needed here for correct formatting in the output HTM=
L

> +    Set the source and destination IP address used when doing transmit o=
nly
> test.
> +    The defaults address values are source 192.18.0.1 and
> +    destination 192.18.0.2. These are special purpose addresses
> +    reserved for benchmakring (RFC 2544).
> +
> +*   ``--tx-udp=3DSRC[,DST]``

An extra blank line is needed here for correct formatting in the output HTM=
L

> +    Set the source and destination UDP port number for transmit test onl=
y
> test.
> +    The default port is the port 9 which is defined for the discard prot=
ocol
> +    (RFC 863).
> +
>  *   ``--pkt-filter-mode=3Dmode``
>=20
>      Set Flow Director mode where mode is either ``none`` (the default),
> ``signature`` or ``perfect``.
> --
> 2.17.1

./dpdk/devtools/checkpatches.sh is showing some lines over 80 characters in=
 parameters.c

### [dpdk-dev] [PATCH v5 1/3] app/testpmd: add ability to set Tx IP and UDP=
 parameters

WARNING:LONG_LINE: line over 80 characters
#88: FILE: app/test-pmd/parameters.c:762:
+                                                "Invalid source IP address=
: %s\n", optarg);

WARNING:LONG_LINE: line over 80 characters
#93: FILE: app/test-pmd/parameters.c:767:
+                                                "Invalid destination IP ad=
dress: %s\n", optarg);

WARNING:LONG_LINE: line over 80 characters
#101: FILE: app/test-pmd/parameters.c:775:
+                               if (errno !=3D 0 || end =3D=3D optarg || n =
> UINT16_MAX ||

WARNING:LONG_LINE: line over 80 characters
#104: FILE: app/test-pmd/parameters.c:778:
+                                                "Invalid UDP port: %s\n", =
optarg);

total: 0 errors, 4 warnings, 153 lines checked

Regards,

Bernard.