From: Charles DAYMAND <charles.daymand@wifirst.fr>
To: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Eric Dumazet <eric.dumazet@gmail.com>,
Eric Dumazet <edumazet@google.com>,
netdev <netdev@vger.kernel.org>
Subject: Re: [PATCH net] r8169: fix multicast tx issue with macvlan interface
Date: Fri, 10 Apr 2020 11:53:56 +0200 [thread overview]
Message-ID: <CAFJtzm1OCz-U36j5Lq4y2EiqPHZOHXVzwJMdSnJ6CnUjzXk9og@mail.gmail.com> (raw)
In-Reply-To: <fe30ab8d-2915-e049-ef30-760960f5efdc@gmail.com>
Hello,
I just tested your patch, there is no improvement on the issue.
I still have layer2 malformed packets.
I also created a TCP server on my laptop with the hardware
periodically sending udp and tcp packets and these packets are also
layer2 malformed.
Please find below an example of the malformed packet :
Frame 3533: 110 bytes on wire (880 bits), 110 bytes captured (880
bits) on interface 0
Ethernet II, Src: b2:41:6f:04:c1:86 (b2:41:6f:04:c1:86), Dst:
IPv4mcast_09 (01:00:5e:00:00:09)
802.1Q Virtual LAN, PRI: 0, DEI: 0, ID: 2833
000. .... .... .... = Priority: Best Effort (default) (0)
...0 .... .... .... = DEI: Ineligible
.... 1011 0001 0001 = ID: 2833
Length: 96
[Expert Info (Error/Malformed): Length field value goes past
the end of the payload]
[Length field value goes past the end of the payload]
[Severity level: Error]
[Group: Malformed]
Logical-Link Control
Data (88 bytes)
Le mer. 8 avr. 2020 à 00:40, Heiner Kallweit <hkallweit1@gmail.com> a écrit :
>
> On 07.04.2020 08:22, Heiner Kallweit wrote:
> > On 07.04.2020 01:20, Eric Dumazet wrote:
> >>
> >>
> >> On 4/6/20 3:16 PM, Heiner Kallweit wrote:
> >>
> >>>
> >>> In a similar context Realtek made me aware of a hw issue if IP header
> >>> has the options field set. You mentioned problems with multicast packets,
> >>> and based on the following code the root cause may be related.
> >>>
> >>> br_ip4_multicast_alloc_query()
> >>> -> iph->ihl = 6;
> >>>
> >>> I'd appreciate if you could test (with HW tx checksumming enabled)
> >>> whether this experimental patch fixes the issue with invalid/lost
> >>> multicasts.
> >>>
> >>>
> >>> diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
> >>> index e40e8eaeb..dd251ddb8 100644
> >>> --- a/drivers/net/ethernet/realtek/r8169_main.c
> >>> +++ b/drivers/net/ethernet/realtek/r8169_main.c
> >>> @@ -4319,6 +4319,10 @@ static netdev_features_t rtl8169_features_check(struct sk_buff *skb,
> >>> rtl_chip_supports_csum_v2(tp))
> >>> features &= ~NETIF_F_ALL_TSO;
> >>> } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
> >>> + if (ip_hdrlen(skb) > sizeof(struct iphdr)) {
> >>
> >> Packet could be non IPv4 at this point. (IPv6 for instance)
> >>
> > Right, I should have mentioned it:
> > This experimental patch is for IPv4 only. In a final version (if it indeed
> > fixes the issue) I had to extend the condition and check for IPv4.
> >
> >>> + pr_info("hk: iphdr has options field set\n");
> >>> + features &= ~NETIF_F_CSUM_MASK;
> >>> + }
> >>> if (skb->len < ETH_ZLEN) {
> >>> switch (tp->mac_version) {
> >>> case RTL_GIGA_MAC_VER_11:
> >>>
> >
>
> Here comes an updated version of the experimental patch that checks for IPv4.
> It's part of a bigger experimental patch here, therefore it's not fully
> optimized.
>
>
> diff --git a/drivers/net/ethernet/realtek/r8169_main.c b/drivers/net/ethernet/realtek/r8169_main.c
> index e40e8eaeb..69e35da6c 100644
> --- a/drivers/net/ethernet/realtek/r8169_main.c
> +++ b/drivers/net/ethernet/realtek/r8169_main.c
> @@ -4307,6 +4307,23 @@ static netdev_tx_t rtl8169_start_xmit(struct sk_buff *skb,
> return NETDEV_TX_BUSY;
> }
>
> +static netdev_features_t rtl8168evl_features_check(struct sk_buff *skb,
> + netdev_features_t features)
> +{
> + __be16 proto = vlan_get_protocol(skb);
> +
> + if (skb->ip_summed == CHECKSUM_PARTIAL) {
> + if (proto == htons(ETH_P_IP)) {
> + if (ip_hdrlen(skb) > sizeof(struct iphdr)) {
> + pr_info("hk: iphdr has options field set\n");
> + features &= ~NETIF_F_CSUM_MASK;
> + }
> + }
> + }
> +
> + return features;
> +}
> +
> static netdev_features_t rtl8169_features_check(struct sk_buff *skb,
> struct net_device *dev,
> netdev_features_t features)
> @@ -4314,6 +4331,9 @@ static netdev_features_t rtl8169_features_check(struct sk_buff *skb,
> int transport_offset = skb_transport_offset(skb);
> struct rtl8169_private *tp = netdev_priv(dev);
>
> + if (tp->mac_version == RTL_GIGA_MAC_VER_34)
> + features = rtl8168evl_features_check(skb, features);
> +
> if (skb_is_gso(skb)) {
> if (transport_offset > GTTCPHO_MAX &&
> rtl_chip_supports_csum_v2(tp))
> --
> 2.26.0
>
>
--
Charles Daymand
Développeur infrastructure
26 rue de Berri 75008 Paris
Assistance dédiée responsable de site - 01 70 70 46 70
Assistance utilisateur - 01 70 70 46 26
next prev parent reply other threads:[~2020-04-10 9:54 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-27 9:08 [PATCH net] r8169: fix multicast tx issue with macvlan interface Charles Daymand
2020-03-27 9:39 ` Heiner Kallweit
2020-03-27 17:41 ` Heiner Kallweit
2020-03-27 18:52 ` Eric Dumazet
2020-03-27 19:17 ` Heiner Kallweit
2020-03-27 19:42 ` Eric Dumazet
[not found] ` <CAFJtzm03QpjGRs70tth26BdUFN_o8zsJOccbnA58ma+2uwiGcg@mail.gmail.com>
2020-03-31 13:48 ` Charles DAYMAND
2020-03-31 14:07 ` Heiner Kallweit
2020-04-06 14:12 ` Charles DAYMAND
2020-04-06 22:16 ` Heiner Kallweit
2020-04-06 23:20 ` Eric Dumazet
2020-04-07 6:22 ` Heiner Kallweit
2020-04-07 22:40 ` Heiner Kallweit
2020-04-10 9:53 ` Charles DAYMAND [this message]
2020-04-13 18:06 ` Heiner Kallweit
2020-04-13 18:20 ` Eric Dumazet
2020-04-15 11:55 ` Charles Daymand
2020-05-12 18:37 ` Heiner Kallweit
2020-04-27 21:12 ` Florent Fourcot
2020-04-30 16:50 ` Heiner Kallweit
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=CAFJtzm1OCz-U36j5Lq4y2EiqPHZOHXVzwJMdSnJ6CnUjzXk9og@mail.gmail.com \
--to=charles.daymand@wifirst.fr \
--cc=edumazet@google.com \
--cc=eric.dumazet@gmail.com \
--cc=hkallweit1@gmail.com \
--cc=netdev@vger.kernel.org \
/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
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).