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Message-Id: <20220408181714.15354-4-ap420073@gmail.com> Date: Fri, 8 Apr 2022 18:17:14 +0000 From: Taehee Yoo <ap420073@...il.com> To: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com, netdev@...r.kernel.org, irusskikh@...vell.com, ast@...nel.org, daniel@...earbox.net, hawk@...nel.org, john.fastabend@...il.com, andrii@...nel.org, kafai@...com, songliubraving@...com, yhs@...com, kpsingh@...nel.org, bpf@...r.kernel.org Cc: ap420073@...il.com Subject: [PATCH net-next v4 3/3] net: atlantic: Implement .ndo_xdp_xmit handler aq_xdp_xmit() is the callback function of .ndo_xdp_xmit. It internally calls aq_nic_xmit_xdpf() to send packet. Signed-off-by: Taehee Yoo <ap420073@...il.com> --- v4: - No changed v3: - No changed v2: - No changed .../net/ethernet/aquantia/atlantic/aq_main.c | 1 + .../net/ethernet/aquantia/atlantic/aq_ring.c | 23 +++++++++++++++++++ .../net/ethernet/aquantia/atlantic/aq_ring.h | 2 ++ 3 files changed, 26 insertions(+) diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_main.c b/drivers/net/ethernet/aquantia/atlantic/aq_main.c index 43012648a351..a0c428db886f 100644 --- a/drivers/net/ethernet/aquantia/atlantic/aq_main.c +++ b/drivers/net/ethernet/aquantia/atlantic/aq_main.c @@ -508,6 +508,7 @@ static const struct net_device_ops aq_ndev_ops = { .ndo_vlan_rx_kill_vid = aq_ndo_vlan_rx_kill_vid, .ndo_setup_tc = aq_ndo_setup_tc, .ndo_bpf = aq_xdp, + .ndo_xdp_xmit = aq_xdp_xmit, }; static int __init aq_ndev_init_module(void) diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c index d2953a84073e..e788f9095a96 100644 --- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.c +++ b/drivers/net/ethernet/aquantia/atlantic/aq_ring.c @@ -401,6 +401,29 @@ static void aq_rx_checksum(struct aq_ring_s *self, __skb_incr_checksum_unnecessary(skb); } +int aq_xdp_xmit(struct net_device *dev, int num_frames, + struct xdp_frame **frames, u32 flags) +{ + struct aq_nic_s *aq_nic = netdev_priv(dev); + unsigned int vec, i, drop = 0; + int cpu = smp_processor_id(); + struct aq_nic_cfg_s *aq_cfg; + struct aq_ring_s *ring; + + aq_cfg = aq_nic_get_cfg(aq_nic); + vec = cpu % aq_cfg->vecs; + ring = aq_nic->aq_ring_tx[AQ_NIC_CFG_TCVEC2RING(aq_cfg, 0, vec)]; + + for (i = 0; i < num_frames; i++) { + struct xdp_frame *xdpf = frames[i]; + + if (aq_nic_xmit_xdpf(aq_nic, ring, xdpf) == NETDEV_TX_BUSY) + drop++; + } + + return num_frames - drop; +} + static struct sk_buff *aq_xdp_run_prog(struct aq_nic_s *aq_nic, struct xdp_buff *xdp, struct aq_ring_s *rx_ring, diff --git a/drivers/net/ethernet/aquantia/atlantic/aq_ring.h b/drivers/net/ethernet/aquantia/atlantic/aq_ring.h index 6a86d9cfac35..31e19dff6c1e 100644 --- a/drivers/net/ethernet/aquantia/atlantic/aq_ring.h +++ b/drivers/net/ethernet/aquantia/atlantic/aq_ring.h @@ -197,6 +197,8 @@ void aq_ring_update_queue_state(struct aq_ring_s *ring); void aq_ring_queue_wake(struct aq_ring_s *ring); void aq_ring_queue_stop(struct aq_ring_s *ring); bool aq_ring_tx_clean(struct aq_ring_s *self); +int aq_xdp_xmit(struct net_device *dev, int num_frames, + struct xdp_frame **frames, u32 flags); int aq_ring_rx_clean(struct aq_ring_s *self, struct napi_struct *napi, int *work_done, -- 2.17.1
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