From: Tyler Retzlaff <roretzla@linux.microsoft.com>
To: Gregory Etelson <getelson@nvidia.com>
Cc: dev@dpdk.org, 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, 17 Jun 2021 08:02:42 -0700 [thread overview]
Message-ID: <20210617150242.GC29777@linuxonhyperv3.guj3yctzbm1etfxqx2vob5hsef.xx.internal.cloudapp.net> (raw)
In-Reply-To: <20210527152858.13312-1-getelson@nvidia.com>
On Thu, May 27, 2021 at 06:28:58PM +0300, Gregory Etelson wrote:
> 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__
this patch reduces compiler portability, though not strictly objecting
so long as the community accepts that it may lead to conditional
compilation having to be introduced in a future change.
please also be mindful of the impact of __attribute__ ((__packed__)) in
the presence of bitfields on gcc when evaluating abi compatibility.
> + 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
next prev parent reply other threads:[~2021-06-17 15:02 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
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 [this message]
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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