DPDK patches and discussions
 help / color / mirror / Atom feed
From: Thomas Monjalon <thomas.monjalon@6wind.com>
To: Jijiang Liu <jijiang.liu@intel.com>
Cc: dev@dpdk.org
Subject: Re: [dpdk-dev] [PATCH v6 2/9] librte_ether:add VxLAN packet identification API in librte_ether
Date: Tue, 21 Oct 2014 12:51:01 +0200
Message-ID: <3607443.z2coKxdkI7@xps13> (raw)
In-Reply-To: <1413881168-20239-3-git-send-email-jijiang.liu@intel.com>

2014-10-21 16:46, Jijiang Liu:
> There are "some" destination UDP port numbers that have unque meaning.
> In terms of VxLAN, "IANA has assigned the value 4789 for the VXLAN UDP port, and this value
> SHOULD be used by default as the destination UDP port. Some early implementations of VXLAN
> have used other values for the destination port. To enable interoperability with these 
> implementations, the destination port SHOULD be configurable."
> 
> Add two APIs in librte_ether for supporting UDP tunneling port configuration on i40e.
> Currently, only VxLAN is implemented in this patch set.

Actually, there are 2 different things in this patch
- new tunnelling API
- VXLAN macros
Please split in 2 patches.

>  int
> +rte_eth_dev_udp_tunnel_add(uint8_t port_id,
> +			   struct rte_eth_udp_tunnel *udp_tunnel,
> +			   uint8_t count)
> +{
> +	uint8_t i;
> +	struct rte_eth_dev *dev;
> +	struct rte_eth_udp_tunnel *tunnel;
> +
> +	if (port_id >= nb_ports) {
> +		PMD_DEBUG_TRACE("Invalid port_id=%d\n", port_id);
> +		return -ENODEV;
> +	}
> +
> +	if (udp_tunnel == NULL) {
> +		PMD_DEBUG_TRACE("Invalid udp_tunnel parameter\n");
> +		return -EINVAL;
> +	}
> +	tunnel = udp_tunnel;
> +
> +	for (i = 0; i < count; i++, tunnel++) {
> +		if (tunnel->prot_type >= RTE_TUNNEL_TYPE_MAX) {
> +			PMD_DEBUG_TRACE("Invalid tunnel type\n");
> +			return -EINVAL;
> +		}
> +	}

I'm not sure it's a good idea to provide a count parameter to iterate in a loop.
It's probably something that the application should do by itself.

> +
> +	dev = &rte_eth_devices[port_id];
> +	FUNC_PTR_OR_ERR_RET(*dev->dev_ops->udp_tunnel_add, -ENOTSUP);
> +	return (*dev->dev_ops->udp_tunnel_add)(dev, udp_tunnel, count);
> +}

[...]

> +/**
> + * Tunneled type.
> + */
> +enum rte_eth_tunnel_type {
> +	RTE_TUNNEL_TYPE_NONE = 0,
> +	RTE_TUNNEL_TYPE_VXLAN,
> +	RTE_TUNNEL_TYPE_GENEVE,
> +	RTE_TUNNEL_TYPE_TEREDO,
> +	RTE_TUNNEL_TYPE_NVGRE,
> +	RTE_TUNNEL_TYPE_MAX,
> +};

This is moved later from rte_ethdev.h to rte_eth_ctrl.h.
Please choose where is the right location in this patch.
By the way, I think ethdev is the right location because it's not directly
related to ctrl API, right?

>  struct rte_eth_conf {
> +	enum rte_eth_tunnel_type tunnel_type;
>  	uint16_t link_speed;
>  	/**< ETH_LINK_SPEED_10[0|00|000], or 0 for autonegotation */
>  	uint16_t link_duplex;

Please don't add this field as the first. It's more logical to start
port configuration with link speed, duplex, etc.
Then please add a comment to explain how it should be used.
But I doubt we should configure a tunnel type for a whole port.
There's something weird here.

> +/* VXLAN protocol header */

This comment should be doxygen'ed.

> +struct vxlan_hdr {
> +	uint32_t vx_flags; /**< VxLAN flag. */
> +	uint32_t vx_vni;   /**< VxLAN ID. */
> +} __attribute__((__packed__));
> +
[...]
>  #define ETHER_TYPE_VLAN 0x8100 /**< IEEE 802.1Q VLAN tagging. */
>  #define ETHER_TYPE_1588 0x88F7 /**< IEEE 802.1AS 1588 Precise Time Protocol. */
>  
> +#define ETHER_VXLAN_HLEN (sizeof(struct udp_hdr) + sizeof(struct vxlan_hdr))

Please add a doxygen comment.

-- 
Thomas

  reply	other threads:[~2014-10-21 10:43 UTC|newest]

Thread overview: 39+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-10-21  8:45 [dpdk-dev] [PATCH v6 0/9] Support VxLAN on Fortville Jijiang Liu
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 1/9] librte_mbuf:the rte_mbuf structure changes Jijiang Liu
2014-10-21 10:26   ` Thomas Monjalon
2014-10-21 14:14     ` Liu, Jijiang
2014-10-22  8:45       ` Thomas Monjalon
2014-10-22  8:53         ` Liu, Jijiang
2014-10-23  2:23         ` Zhang, Helin
2014-11-12 13:26           ` Thomas Monjalon
2014-11-12 14:31             ` Zhang, Helin
2014-11-12 15:23               ` Thomas Monjalon
2014-11-13  3:17             ` Liu, Jijiang
2014-11-13  8:53               ` Thomas Monjalon
2014-11-13 11:24                 ` Liu, Jijiang
2014-11-13 11:35                   ` Thomas Monjalon
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 2/9] librte_ether:add VxLAN packet identification API in librte_ether Jijiang Liu
2014-10-21 10:51   ` Thomas Monjalon [this message]
2014-10-21 13:48     ` Liu, Jijiang
2014-10-21 21:19       ` Thomas Monjalon
2014-10-22  1:46         ` Liu, Jijiang
2014-10-22  9:52           ` Thomas Monjalon
2014-10-22 12:47             ` Liu, Jijiang
2014-10-22 13:25               ` Thomas Monjalon
2014-10-22  5:21         ` Liu, Jijiang
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 3/9] i40e:support VxLAN packet identification in librte_pmd_i40e Jijiang Liu
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 4/9] app/test-pmd:test VxLAN packet identification Jijiang Liu
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 5/9] librte_ether:add data structures of VxLAN filter Jijiang Liu
2014-10-21 15:13   ` Thomas Monjalon
2014-10-22  2:25     ` Liu, Jijiang
2014-10-22  9:31       ` Thomas Monjalon
2014-10-22 11:03         ` Liu, Jijiang
2014-10-23  9:06           ` Chilikin, Andrey
2014-10-22  6:45     ` Liu, Jijiang
2014-10-22  9:25       ` Thomas Monjalon
2014-10-22 13:54         ` Liu, Jijiang
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 6/9] i40e:implement API of VxLAN packet filter in librte_pmd_i40e Jijiang Liu
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 7/9] app/testpmd:test VxLAN packet filter Jijiang Liu
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 8/9] i40e:support VxLAN Tx checksum offload Jijiang Liu
2014-10-21  8:46 ` [dpdk-dev] [PATCH v6 9/9] app/testpmd:test " Jijiang Liu
2014-10-21 14:54 ` [dpdk-dev] [PATCH v6 0/9] Support VxLAN on Fortville Liu, Yong

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=3607443.z2coKxdkI7@xps13 \
    --to=thomas.monjalon@6wind.com \
    --cc=dev@dpdk.org \
    --cc=jijiang.liu@intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

DPDK patches and discussions

This inbox may be cloned and mirrored by anyone:

	git clone --mirror https://inbox.dpdk.org/dev/0 dev/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 dev dev/ https://inbox.dpdk.org/dev \
		dev@dpdk.org
	public-inbox-index dev

Example config snippet for mirrors.
Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.dev


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git