From: Matteo Croce <mcroce@redhat.com>
To: Lorenzo Bianconi <lorenzo@kernel.org>
Cc: netdev@vger.kernel.org, thomas.petazzoni@bootlin.com,
ilias.apalodimas@linaro.org, brouer@redhat.com
Subject: Re: [RFC 3/4] net: mvneta: add basic XDP support
Date: Tue, 1 Oct 2019 12:37:00 +0200 [thread overview]
Message-ID: <20191001123700.5d1fa185@mcroce-redhat> (raw)
In-Reply-To: <5119bf5e9c33205196cf0e8b6dc7cf0d69a7e6e9.1569920973.git.lorenzo@kernel.org>
On Tue, 1 Oct 2019 11:24:43 +0200
Lorenzo Bianconi <lorenzo@kernel.org> wrote:
> +static int mvneta_xdp_setup(struct net_device *dev, struct bpf_prog
> *prog,
> + struct netlink_ext_ack *extack)
> +{
> + struct mvneta_port *pp = netdev_priv(dev);
> + struct bpf_prog *old_prog;
> +
> + if (prog && dev->mtu > MVNETA_MAX_RX_BUF_SIZE) {
> + NL_SET_ERR_MSG_MOD(extack, "Jumbo frames not
> supported on XDP");
> + return -EOPNOTSUPP;
-ENOTSUPP maybe?
> + }
> +
> + mvneta_stop(dev);
only stop and restart if already running
> +
> + old_prog = xchg(&pp->xdp_prog, prog);
> + if (old_prog)
> + bpf_prog_put(old_prog);
> +
> + mvneta_open(dev);
^^
--
Matteo Croce
per aspera ad upstream
next prev parent reply other threads:[~2019-10-01 10:37 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-10-01 9:24 [RFC 0/4] add basic XDP support to mvneta driver Lorenzo Bianconi
2019-10-01 9:24 ` [RFC 1/4] net: mvneta: introduce page pool API for sw buffer manager Lorenzo Bianconi
2019-10-01 14:11 ` kbuild test robot
2019-10-01 9:24 ` [RFC 2/4] net: mvneta: rely on build_skb in mvneta_rx_swbm poll routine Lorenzo Bianconi
2019-10-01 9:24 ` [RFC 3/4] net: mvneta: add basic XDP support Lorenzo Bianconi
2019-10-01 10:37 ` Matteo Croce [this message]
2019-10-01 11:02 ` Toke Høiland-Jørgensen
2019-10-01 10:52 ` Maciej Fijalkowski
2019-10-01 11:06 ` Toke Høiland-Jørgensen
2019-10-01 11:30 ` Jesper Dangaard Brouer
2019-10-01 11:47 ` Lorenzo Bianconi
2019-10-01 11:44 ` Lorenzo Bianconi
2019-10-02 3:41 ` Ilias Apalodimas
2019-10-02 8:59 ` Lorenzo Bianconi
2019-10-01 9:24 ` [RFC 4/4] net: mvneta: move header prefetch in mvneta_swbm_rx_frame Lorenzo Bianconi
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