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7WrJz/GvbNoFhJoJ6RzxCMQrFgxrssVZ7w5HcUj94lbnJ6osdYE/WpSd50B6jet6LKh5revg u9XI9CoqsPQ1V4wKYYdllPuogCye7KNYNKuiiuSNpaF4gHq1ZWGArwZtWHjgc2v3LegOpRQF SwOskMKmWsUyHIRMG1p8RpkBQTqY2rGSeUqPSvaqjT0nq+SUEM6qxEXD/2Wqri/X6bamuPDb S0PkBvFD2+0zr5Bc2YkMGPBYPNGZiTp3UjmZlLfn3TiBKIC92jherY563CULjSsiBEJCOSvv 4VPLn5aAcfbCXJnE3IGCp/hPl50iQqu7BPOYBbWXeb9ptDjGCAThNxSz0WAXkmcjAFE8gdE6 Znk9 Message-ID: Date: Sat, 25 Apr 2020 16:08:23 +0300 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: <20200106083423.26600-1-somnath.kotur@broadcom.com> Content-Type: text/plain; charset="utf-8" Content-Language: en-US Content-Transfer-Encoding: 7bit X-Originating-IP: [10.17.10.39] X-ClientProxiedBy: ocex03.SolarFlarecom.com (10.20.40.36) To ukex01.SolarFlarecom.com (10.17.10.4) X-TM-AS-Product-Ver: SMEX-12.5.0.1300-8.5.1020-25376.003 X-TM-AS-Result: No-12.751500-8.000000-10 X-TMASE-MatchedRID: QW5G6BKkLToeimh1YYHcKAuLP4ROdWHVPXu1L28jSnHLkl8e9W70i4w0 ZuabowBJ8XXKCAKJjbuPWx38Q1qIm1dy2Ts5I62Pi82UiskMqcxKgIbix5+XxK6LIk1kYT+JfeR HqXTAYgYCXJ4xsvY8rckxaiiDqUf5YlldA0POS1Kar6Iu0UJj0rM0ITB7EiC7KBVvFbsUM5XZnl 3Zzq2mdsJ2728pYeUdAFEr0t0F7P/ZoDXhUFxoPIvqrlGw2G/k5GNm5cTRaUcW6M2A15L1QI05L wsa+fBR4vM1YF6AJbZFi+KwZZttL7ew1twePJJB3QfwsVk0UbtuRXh7bFKB7jJ5UsDfs05nnMNc v57idKQaZOaCjAw/5zMbSFhZ6N4vYDttQUGqHZU= X-TM-AS-User-Approved-Sender: Yes X-TM-AS-User-Blocked-Sender: No X-TMASE-Result: 10--12.751500-8.000000 X-TMASE-Version: SMEX-12.5.0.1300-8.5.1020-25376.003 X-MDID: 1587820129-ckj3L0cReBNc Subject: Re: [dpdk-dev] [PATCH] mbuf: fix to update documentation of QinQ stripped bit interpretation X-BeenThere: dev@dpdk.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: DPDK patches and discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces@dpdk.org Sender: "dev" I'll review v2 promptly, some minor comments from me below (taking into account that Olivier's review notes are applied). On 1/6/20 11:34 AM, Somnath Kotur wrote: > Certain hardware may be able to strip and/or save only the outermost > VLAN instead of both the VLANs in the mbuf in a QinQ scenario. > To handle such cases, we could re-interpret setting of just > PKT_RX_QINQ_STRIPPED to indicate that only the outermost VLAN has > been stripped and saved in mbuf->vlan_tci_outer. > Only When both PKT_RX_QINQ_STRIPPED and PKT_RX_VLAN_STRIPPED are set, the 2 > VLANs have been stripped by the hardware and their TCI are saved in > mbuf->vlan_tci (inner) and mbuf->vlan_tci_outer (outer). > > Signed-off-by: Somnath Kotur > --- > lib/librte_mbuf/rte_mbuf_core.h | 15 +++++++++++---- > 1 file changed, 11 insertions(+), 4 deletions(-) > > diff --git a/lib/librte_mbuf/rte_mbuf_core.h b/lib/librte_mbuf/rte_mbuf_core.h > index 9a8557d..db1070b 100644 > --- a/lib/librte_mbuf/rte_mbuf_core.h > +++ b/lib/librte_mbuf/rte_mbuf_core.h > @@ -124,12 +124,19 @@ > #define PKT_RX_FDIR_FLX (1ULL << 14) > > /** > - * The 2 vlans have been stripped by the hardware and their tci are > - * saved in mbuf->vlan_tci (inner) and mbuf->vlan_tci_outer (outer). > + * The outer vlan has been stripped by the hardware and their tci are vlan -> VLAN, tci -> TCI > + * saved in mbuf->vlan_tci_outer (outer). > * This can only happen if vlan stripping is enabled in the RX vlan -> VLAN, RX -> Rx > * configuration of the PMD. > - * When PKT_RX_QINQ_STRIPPED is set, the flags (PKT_RX_VLAN | > - * PKT_RX_VLAN_STRIPPED | PKT_RX_QINQ) must also be set. > + * When PKT_RX_QINQ_STRIPPED is set, the flags (PKT_RX_VLAN | PKT_RX_QINQ) > + * must also be set. > + * When both PKT_RX_QINQ_STRIPPED and PKT_RX_VLAN_STRIPPED are set, the 2 vlans vlans -> VLANs > + * have been stripped by the hardware and their tci are saved in tci -> TCI > + * mbuf->vlan_tci (inner) and mbuf->vlan_tci_outer (outer). > + * This can only happen if vlan stripping is enabled in the RX configuration vlan -> VLAN, RX -> Rx > + * of the PMD. > + * When PKT_RX_QINQ_STRIPPED and PKT_RX_VLAN_STRIPPED are set, > + * (PKT_RX_VLAN | PKT_RX_QINQ) must also be set. > */ > #define PKT_RX_QINQ_STRIPPED (1ULL << 15) > > I realize that some of my comment above touch not modified lines, but ~90% of the description is updated and I see no point to keep remaining 10% untouched.