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Message-Id: <cover.1651207788.git.peilin.ye@bytedance.com> Date: Thu, 28 Apr 2022 22:24:17 -0700 From: Peilin Ye <yepeilin.cs@...il.com> To: "David S. Miller" <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>, Eric Dumazet <eric.dumazet@...il.com>, Hideaki YOSHIFUJI <yoshfuji@...ux-ipv6.org>, David Ahern <dsahern@...nel.org>, Paolo Abeni <pabeni@...hat.com> Cc: Peilin Ye <peilin.ye@...edance.com>, William Tu <u9012063@...il.com>, Cong Wang <cong.wang@...edance.com>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org, Peilin Ye <yepeilin.cs@...il.com> Subject: [PATCH v2 net-next 0/2] ip_gre, ip6_gre: Make [IP6]GRE[TAP] devices always NETIF_F_LLTX From: Peilin Ye <peilin.ye@...edance.com> v1: https://lore.kernel.org/netdev/cover.1650580763.git.peilin.ye@bytedance.com/ change since v1: - deleted "depends on patch..." in [1/2]'s commit message Hi all, This patchset depends on these fixes [1], which has been merged into net-next. Since o_seqno is now atomic_t, we can always turn on NETIF_F_LLTX for [IP6]GRE[TAP] devices, since we no longer need the TX lock (&txq->_xmit_lock). We could probably do the same thing to [IP6]ERSPAN devices as well, but I'm not familiar with them yet. For example, ERSPAN devices are initialized as |= GRE_FEATURES in erspan_tunnel_init(), but I don't see IP6ERSPAN devices being initialized as |= GRE6_FEATURES. Where should we initialize IP6ERSPAN devices' ->features? Please suggest if I'm missing something, thanks! [1] https://lore.kernel.org/netdev/cover.1650575919.git.peilin.ye@bytedance.com/ Thanks, Peilin Ye (2): ip_gre: Make GRE and GRETAP devices always NETIF_F_LLTX ip6_gre: Make IP6GRE and IP6GRETAP devices always NETIF_F_LLTX net/ipv4/ip_gre.c | 50 ++++++++++++++++++++-------------------------- net/ipv6/ip6_gre.c | 34 ++++++++++++------------------- 2 files changed, 35 insertions(+), 49 deletions(-) -- 2.20.1
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