From: "Morten Brørup" <mb@smartsharesystems.com>
To: "Gregory Etelson" <getelson@nvidia.com>, <dev@dpdk.org>
Cc: <matan@nvidia.com>, <orika@nvidia.com>, <rasland@nvidia.com>,
"Bernard Iremonger" <bernard.iremonger@intel.com>,
"Olivier Matz" <olivier.matz@6wind.com>
Subject: Re: [dpdk-dev] [PATCH] net: introduce IPv4 ihl and version fields
Date: Thu, 27 May 2021 17:56:44 +0200 [thread overview]
Message-ID: <98CBD80474FA8B44BF855DF32C47DC35C617E2@smartserver.smartshare.dk> (raw)
In-Reply-To: <20210527152858.13312-1-getelson@nvidia.com>
> From: dev [mailto:dev-bounces@dpdk.org] On Behalf Of Gregory Etelson
> Sent: Thursday, 27 May 2021 17.29
and version fields
>
> RTE IPv4 header definition combines the `version' and `ihl' fields
> into a single structure member.
> This patch introduces dedicated structure members for both `version'
> and `ihl' IPv4 fields. Separated header fields definitions allow to
> create simplified code to match on the IHL value in a flow rule.
> The original `version_ihl' structure member is kept for backward
> compatibility.
>
> Signed-off-by: Gregory Etelson <getelson@nvidia.com>
> ---
> app/test/test_flow_classify.c | 8 ++++----
> lib/net/rte_ip.h | 16 +++++++++++++++-
> 2 files changed, 19 insertions(+), 5 deletions(-)
>
> diff --git a/app/test/test_flow_classify.c
> b/app/test/test_flow_classify.c
> index 951606f248..4f64be5357 100644
> --- a/app/test/test_flow_classify.c
> +++ b/app/test/test_flow_classify.c
> @@ -95,7 +95,7 @@ static struct rte_acl_field_def
> ipv4_defs[NUM_FIELDS_IPV4] = {
> * dst mask 255.255.255.00 / udp src is 32 dst is 33 / end"
> */
> static struct rte_flow_item_ipv4 ipv4_udp_spec_1 = {
> - { 0, 0, 0, 0, 0, 0, IPPROTO_UDP, 0,
> + { { .version_ihl = 0}, 0, 0, 0, 0, 0, IPPROTO_UDP, 0,
> RTE_IPV4(2, 2, 2, 3), RTE_IPV4(2, 2, 2, 7)}
> };
> static const struct rte_flow_item_ipv4 ipv4_mask_24 = {
> @@ -131,7 +131,7 @@ static struct rte_flow_item end_item = {
> RTE_FLOW_ITEM_TYPE_END,
> * dst mask 255.255.255.00 / tcp src is 16 dst is 17 / end"
> */
> static struct rte_flow_item_ipv4 ipv4_tcp_spec_1 = {
> - { 0, 0, 0, 0, 0, 0, IPPROTO_TCP, 0,
> + { { .version_ihl = 0}, 0, 0, 0, 0, 0, IPPROTO_TCP, 0,
> RTE_IPV4(1, 2, 3, 4), RTE_IPV4(5, 6, 7, 8)}
> };
>
> @@ -150,8 +150,8 @@ static struct rte_flow_item tcp_item_1 = {
> RTE_FLOW_ITEM_TYPE_TCP,
> * dst mask 255.255.255.00 / sctp src is 16 dst is 17/ end"
> */
> static struct rte_flow_item_ipv4 ipv4_sctp_spec_1 = {
> - { 0, 0, 0, 0, 0, 0, IPPROTO_SCTP, 0, RTE_IPV4(11, 12, 13, 14),
> - RTE_IPV4(15, 16, 17, 18)}
> + { { .version_ihl = 0}, 0, 0, 0, 0, 0, IPPROTO_SCTP, 0,
> + RTE_IPV4(11, 12, 13, 14), RTE_IPV4(15, 16, 17, 18)}
> };
>
> static struct rte_flow_item_sctp sctp_spec_1 = {
> diff --git a/lib/net/rte_ip.h b/lib/net/rte_ip.h
> index 4b728969c1..684bb028b2 100644
> --- a/lib/net/rte_ip.h
> +++ b/lib/net/rte_ip.h
> @@ -38,7 +38,21 @@ extern "C" {
> * IPv4 Header
> */
> struct rte_ipv4_hdr {
> - uint8_t version_ihl; /**< version and header length */
> + __extension__
> + union {
> + uint8_t version_ihl; /**< version and header length */
> + struct {
> +#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
> + uint8_t ihl:4;
> + uint8_t version:4;
> +#elif RTE_BYTE_ORDER == RTE_BIG_ENDIAN
> + uint8_t version:4;
> + uint8_t ihl:4;
> +#else
> +#error "setup endian definition"
> +#endif
> + };
> + };
> uint8_t type_of_service; /**< type of service */
> rte_be16_t total_length; /**< length of packet */
> rte_be16_t packet_id; /**< packet ID */
> --
> 2.31.1
>
This does not break the ABI, but it could be discussed if it breaks the API due to the required structure initialization changes shown in test_flow_classify.c. I think this patch is an improvement, and that such structure modifications should be generally accepted, so:
Acked-by: Morten Brørup <mb@smartsharesystems.com>
next prev parent reply other threads:[~2021-05-27 15:56 UTC|newest]
Thread overview: 52+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-27 15:28 Gregory Etelson
2021-05-27 15:56 ` Morten Brørup [this message]
2021-05-28 10:20 ` Ananyev, Konstantin
2021-05-28 10:52 ` Morten Brørup
2021-05-28 14:18 ` Gregory Etelson
2021-05-31 9:58 ` Ananyev, Konstantin
2021-05-31 11:10 ` Gregory Etelson
2021-06-02 9:51 ` Gregory Etelson
2021-06-10 4:10 ` Gregory Etelson
2021-06-10 9:22 ` Olivier Matz
2021-06-14 16:36 ` Andrew Rybchenko
2021-06-17 16:29 ` Ferruh Yigit
2021-06-03 0:58 ` Min Hu (Connor)
2021-06-03 2:03 ` Stephen Hemminger
2021-06-03 4:59 ` Gregory Etelson
2021-06-17 15:02 ` Tyler Retzlaff
2021-09-03 7:30 ` [dpdk-dev] [PATCH v2] " getelson
2021-10-04 7:49 ` Olivier Matz
2021-10-04 8:59 ` Gregory Etelson
2021-10-04 8:46 ` [dpdk-dev] [PATCH v3] " Gregory Etelson
2021-10-04 12:13 ` [dpdk-dev] [PATCH v4] " Gregory Etelson
2021-10-04 15:59 ` Stephen Hemminger
2021-10-04 16:48 ` Olivier Matz
2021-10-12 12:36 ` Gregory Etelson
2021-10-12 12:29 ` [dpdk-dev] [PATCH v5] " Gregory Etelson
2021-10-13 8:58 ` Kinsella, Ray
2021-10-13 12:14 ` Ferruh Yigit
2021-10-13 17:12 ` Gregory Etelson
2021-10-13 17:13 ` [dpdk-dev] [PATCH v6 0/2] " Gregory Etelson
2021-10-13 17:13 ` [dpdk-dev] [PATCH v6 1/2] net: fix IPv4 change announce Gregory Etelson
2021-10-14 8:37 ` Thomas Monjalon
2021-10-14 11:03 ` Ferruh Yigit
2021-10-14 12:21 ` Gregory Etelson
2021-10-14 12:32 ` Ferruh Yigit
2021-10-14 13:34 ` Ori Kam
2021-10-14 12:53 ` [dpdk-dev] [EXT] " Akhil Goyal
2021-10-13 17:13 ` [dpdk-dev] [PATCH v6 2/2] net: introduce IPv4 ihl and version fields Gregory Etelson
2021-10-14 15:11 ` Ferruh Yigit
2021-10-14 16:04 ` Thomas Monjalon
2021-10-14 17:42 ` Gregory Etelson
2021-10-14 8:21 ` [dpdk-dev] [PATCH v6 0/2] " Ferruh Yigit
2021-10-14 8:30 ` Thomas Monjalon
2021-10-14 11:01 ` Ferruh Yigit
2021-10-14 9:29 ` Gregory Etelson
2021-10-14 11:10 ` Ferruh Yigit
2021-10-14 17:41 ` [dpdk-dev] [PATCH v7 " Gregory Etelson
2021-10-14 17:41 ` [dpdk-dev] [PATCH v7 1/2] net: fix IPv4 change announce Gregory Etelson
2021-10-14 20:00 ` Slava Ovsiienko
2021-10-21 22:00 ` Ajit Khaparde
2021-10-14 17:41 ` [dpdk-dev] [PATCH v7 2/2] net: introduce IPv4 ihl and version fields Gregory Etelson
2021-10-14 18:16 ` Ajit Khaparde
2021-10-14 19:52 ` [dpdk-dev] [PATCH v7 0/2] " Ferruh Yigit
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