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Message-ID: <20190524093431.20887-12-maximmi@mellanox.com>
Date: Fri, 24 May 2019 09:35:33 +0000
From: Maxim Mikityanskiy <maximmi@...lanox.com>
To: Alexei Starovoitov <ast@...nel.org>,
Daniel Borkmann <daniel@...earbox.net>,
Björn Töpel <bjorn.topel@...el.com>,
Magnus Karlsson <magnus.karlsson@...el.com>
CC: "bpf@...r.kernel.org" <bpf@...r.kernel.org>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
"David S. Miller" <davem@...emloft.net>,
Saeed Mahameed <saeedm@...lanox.com>,
Jonathan Lemon <bsd@...com>,
Tariq Toukan <tariqt@...lanox.com>,
Martin KaFai Lau <kafai@...com>,
Song Liu <songliubraving@...com>, Yonghong Song <yhs@...com>,
Jakub Kicinski <jakub.kicinski@...ronome.com>,
Maciej Fijalkowski <maciejromanfijalkowski@...il.com>,
Maxim Mikityanskiy <maximmi@...lanox.com>
Subject: [PATCH bpf-next v3 11/16] net/mlx5e: Share the XDP SQ for XDP_TX
between RQs
Put the XDP SQ that is used for XDP_TX into the channel. It used to be a
part of the RQ, but with introduction of AF_XDP there will be one more
RQ that could share the same XDP SQ. This patch is a preparation for
that change.
Separate XDP_TX statistics per RQ were implemented in one of the previous
patches.
Signed-off-by: Maxim Mikityanskiy <maximmi@...lanox.com>
Reviewed-by: Tariq Toukan <tariqt@...lanox.com>
Acked-by: Saeed Mahameed <saeedm@...lanox.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en.h | 4 ++-
.../net/ethernet/mellanox/mlx5/core/en/xdp.c | 20 +++++++-------
.../net/ethernet/mellanox/mlx5/core/en/xdp.h | 4 +--
.../net/ethernet/mellanox/mlx5/core/en_main.c | 26 +++++++++++--------
.../net/ethernet/mellanox/mlx5/core/en_txrx.c | 4 +--
5 files changed, 32 insertions(+), 26 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en.h b/drivers/net/ethernet/mellanox/mlx5/core/en.h
index cdb73568a344..8cb28e5604f0 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en.h
@@ -431,6 +431,7 @@ struct mlx5e_xdp_info {
dma_addr_t dma_addr;
} frame;
struct {
+ struct mlx5e_rq *rq;
struct mlx5e_dma_info di;
} page;
};
@@ -643,7 +644,7 @@ struct mlx5e_rq {
/* XDP */
struct bpf_prog *xdp_prog;
- struct mlx5e_xdpsq xdpsq;
+ struct mlx5e_xdpsq *xdpsq;
DECLARE_BITMAP(flags, 8);
struct page_pool *page_pool;
@@ -662,6 +663,7 @@ struct mlx5e_rq {
struct mlx5e_channel {
/* data path */
struct mlx5e_rq rq;
+ struct mlx5e_xdpsq rq_xdpsq;
struct mlx5e_txqsq sq[MLX5E_MAX_NUM_TC];
struct mlx5e_icosq icosq; /* internal control operations */
bool xdp;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
index 89f6eb1109cf..b3e118fc4521 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c
@@ -54,8 +54,8 @@ int mlx5e_xdp_max_mtu(struct mlx5e_params *params)
}
static inline bool
-mlx5e_xmit_xdp_buff(struct mlx5e_xdpsq *sq, struct mlx5e_dma_info *di,
- struct xdp_buff *xdp)
+mlx5e_xmit_xdp_buff(struct mlx5e_xdpsq *sq, struct mlx5e_rq *rq,
+ struct mlx5e_dma_info *di, struct xdp_buff *xdp)
{
struct mlx5e_xdp_xmit_data xdptxd;
struct mlx5e_xdp_info xdpi;
@@ -75,6 +75,7 @@ mlx5e_xmit_xdp_buff(struct mlx5e_xdpsq *sq, struct mlx5e_dma_info *di,
dma_sync_single_for_device(sq->pdev, dma_addr, xdptxd.len, DMA_TO_DEVICE);
xdptxd.dma_addr = dma_addr;
+ xdpi.page.rq = rq;
xdpi.page.di = *di;
return sq->xmit_xdp_frame(sq, &xdptxd, &xdpi);
@@ -105,7 +106,7 @@ bool mlx5e_xdp_handle(struct mlx5e_rq *rq, struct mlx5e_dma_info *di,
*len = xdp.data_end - xdp.data;
return false;
case XDP_TX:
- if (unlikely(!mlx5e_xmit_xdp_buff(&rq->xdpsq, di, &xdp)))
+ if (unlikely(!mlx5e_xmit_xdp_buff(rq->xdpsq, rq, di, &xdp)))
goto xdp_abort;
__set_bit(MLX5E_RQ_FLAG_XDP_XMIT, rq->flags); /* non-atomic */
return true;
@@ -287,7 +288,6 @@ static bool mlx5e_xmit_xdp_frame(struct mlx5e_xdpsq *sq,
static void mlx5e_free_xdpsq_desc(struct mlx5e_xdpsq *sq,
struct mlx5e_xdp_wqe_info *wi,
- struct mlx5e_rq *rq,
bool recycle)
{
struct mlx5e_xdp_info_fifo *xdpi_fifo = &sq->db.xdpi_fifo;
@@ -305,7 +305,7 @@ static void mlx5e_free_xdpsq_desc(struct mlx5e_xdpsq *sq,
break;
case MLX5E_XDP_XMIT_MODE_PAGE:
/* XDP_TX */
- mlx5e_page_release(rq, &xdpi.page.di, recycle);
+ mlx5e_page_release(xdpi.page.rq, &xdpi.page.di, recycle);
break;
default:
WARN_ON_ONCE(true);
@@ -313,7 +313,7 @@ static void mlx5e_free_xdpsq_desc(struct mlx5e_xdpsq *sq,
}
}
-bool mlx5e_poll_xdpsq_cq(struct mlx5e_cq *cq, struct mlx5e_rq *rq)
+bool mlx5e_poll_xdpsq_cq(struct mlx5e_cq *cq)
{
struct mlx5e_xdpsq *sq;
struct mlx5_cqe64 *cqe;
@@ -358,7 +358,7 @@ bool mlx5e_poll_xdpsq_cq(struct mlx5e_cq *cq, struct mlx5e_rq *rq)
sqcc += wi->num_wqebbs;
- mlx5e_free_xdpsq_desc(sq, wi, rq, true);
+ mlx5e_free_xdpsq_desc(sq, wi, true);
} while (!last_wqe);
} while ((++i < MLX5E_TX_CQ_POLL_BUDGET) && (cqe = mlx5_cqwq_get_cqe(&cq->wq)));
@@ -373,7 +373,7 @@ bool mlx5e_poll_xdpsq_cq(struct mlx5e_cq *cq, struct mlx5e_rq *rq)
return (i == MLX5E_TX_CQ_POLL_BUDGET);
}
-void mlx5e_free_xdpsq_descs(struct mlx5e_xdpsq *sq, struct mlx5e_rq *rq)
+void mlx5e_free_xdpsq_descs(struct mlx5e_xdpsq *sq)
{
while (sq->cc != sq->pc) {
struct mlx5e_xdp_wqe_info *wi;
@@ -384,7 +384,7 @@ void mlx5e_free_xdpsq_descs(struct mlx5e_xdpsq *sq, struct mlx5e_rq *rq)
sq->cc += wi->num_wqebbs;
- mlx5e_free_xdpsq_desc(sq, wi, rq, false);
+ mlx5e_free_xdpsq_desc(sq, wi, false);
}
}
@@ -450,7 +450,7 @@ int mlx5e_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames,
void mlx5e_xdp_rx_poll_complete(struct mlx5e_rq *rq)
{
- struct mlx5e_xdpsq *xdpsq = &rq->xdpsq;
+ struct mlx5e_xdpsq *xdpsq = rq->xdpsq;
if (xdpsq->mpwqe.wqe)
mlx5e_xdp_mpwqe_complete(xdpsq);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h
index 2a5158993349..86db5ad49a42 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en/xdp.h
@@ -42,8 +42,8 @@
int mlx5e_xdp_max_mtu(struct mlx5e_params *params);
bool mlx5e_xdp_handle(struct mlx5e_rq *rq, struct mlx5e_dma_info *di,
void *va, u16 *rx_headroom, u32 *len);
-bool mlx5e_poll_xdpsq_cq(struct mlx5e_cq *cq, struct mlx5e_rq *rq);
-void mlx5e_free_xdpsq_descs(struct mlx5e_xdpsq *sq, struct mlx5e_rq *rq);
+bool mlx5e_poll_xdpsq_cq(struct mlx5e_cq *cq);
+void mlx5e_free_xdpsq_descs(struct mlx5e_xdpsq *sq);
void mlx5e_set_xmit_fp(struct mlx5e_xdpsq *sq, bool is_mpw);
void mlx5e_xdp_rx_poll_complete(struct mlx5e_rq *rq);
int mlx5e_xdp_xmit(struct net_device *dev, int n, struct xdp_frame **frames,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
index 204e199b141e..35b42c875cf3 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_main.c
@@ -418,6 +418,7 @@ static int mlx5e_alloc_rq(struct mlx5e_channel *c,
rq->mdev = mdev;
rq->hw_mtu = MLX5E_SW2HW_MTU(params, params->sw_mtu);
rq->stats = &c->priv->channel_stats[c->ix].rq;
+ rq->xdpsq = &c->rq_xdpsq;
rq->xdp_prog = params->xdp_prog ? bpf_prog_inc(params->xdp_prog) : NULL;
if (IS_ERR(rq->xdp_prog)) {
@@ -1439,7 +1440,7 @@ static int mlx5e_open_xdpsq(struct mlx5e_channel *c,
return err;
}
-static void mlx5e_close_xdpsq(struct mlx5e_xdpsq *sq, struct mlx5e_rq *rq)
+static void mlx5e_close_xdpsq(struct mlx5e_xdpsq *sq)
{
struct mlx5e_channel *c = sq->channel;
@@ -1447,7 +1448,7 @@ static void mlx5e_close_xdpsq(struct mlx5e_xdpsq *sq, struct mlx5e_rq *rq)
napi_synchronize(&c->napi);
mlx5e_destroy_sq(c->mdev, sq->sqn);
- mlx5e_free_xdpsq_descs(sq, rq);
+ mlx5e_free_xdpsq_descs(sq);
mlx5e_free_xdpsq(sq);
}
@@ -1826,7 +1827,7 @@ static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix,
/* XDP SQ CQ params are same as normal TXQ sq CQ params */
err = c->xdp ? mlx5e_open_cq(c, params->tx_cq_moderation,
- &cparam->tx_cq, &c->rq.xdpsq.cq) : 0;
+ &cparam->tx_cq, &c->rq_xdpsq.cq) : 0;
if (err)
goto err_close_rx_cq;
@@ -1840,9 +1841,12 @@ static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix,
if (err)
goto err_close_icosq;
- err = c->xdp ? mlx5e_open_xdpsq(c, params, &cparam->xdp_sq, &c->rq.xdpsq, false) : 0;
- if (err)
- goto err_close_sqs;
+ if (c->xdp) {
+ err = mlx5e_open_xdpsq(c, params, &cparam->xdp_sq,
+ &c->rq_xdpsq, false);
+ if (err)
+ goto err_close_sqs;
+ }
err = mlx5e_open_rq(c, params, &cparam->rq, &c->rq);
if (err)
@@ -1861,7 +1865,7 @@ static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix,
err_close_xdp_sq:
if (c->xdp)
- mlx5e_close_xdpsq(&c->rq.xdpsq, &c->rq);
+ mlx5e_close_xdpsq(&c->rq_xdpsq);
err_close_sqs:
mlx5e_close_sqs(c);
@@ -1872,7 +1876,7 @@ static int mlx5e_open_channel(struct mlx5e_priv *priv, int ix,
err_disable_napi:
napi_disable(&c->napi);
if (c->xdp)
- mlx5e_close_cq(&c->rq.xdpsq.cq);
+ mlx5e_close_cq(&c->rq_xdpsq.cq);
err_close_rx_cq:
mlx5e_close_cq(&c->rq.cq);
@@ -1917,15 +1921,15 @@ static void mlx5e_deactivate_channel(struct mlx5e_channel *c)
static void mlx5e_close_channel(struct mlx5e_channel *c)
{
- mlx5e_close_xdpsq(&c->xdpsq, NULL);
+ mlx5e_close_xdpsq(&c->xdpsq);
mlx5e_close_rq(&c->rq);
if (c->xdp)
- mlx5e_close_xdpsq(&c->rq.xdpsq, &c->rq);
+ mlx5e_close_xdpsq(&c->rq_xdpsq);
mlx5e_close_sqs(c);
mlx5e_close_icosq(&c->icosq);
napi_disable(&c->napi);
if (c->xdp)
- mlx5e_close_cq(&c->rq.xdpsq.cq);
+ mlx5e_close_cq(&c->rq_xdpsq.cq);
mlx5e_close_cq(&c->rq.cq);
mlx5e_close_cq(&c->xdpsq.cq);
mlx5e_close_tx_cqs(c);
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c
index de4d5ae431af..d2b8ce5df59c 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_txrx.c
@@ -97,10 +97,10 @@ int mlx5e_napi_poll(struct napi_struct *napi, int budget)
for (i = 0; i < c->num_tc; i++)
busy |= mlx5e_poll_tx_cq(&c->sq[i].cq, budget);
- busy |= mlx5e_poll_xdpsq_cq(&c->xdpsq.cq, NULL);
+ busy |= mlx5e_poll_xdpsq_cq(&c->xdpsq.cq);
if (c->xdp)
- busy |= mlx5e_poll_xdpsq_cq(&rq->xdpsq.cq, rq);
+ busy |= mlx5e_poll_xdpsq_cq(&c->rq_xdpsq.cq);
if (likely(budget)) { /* budget=0 means: don't poll rx rings */
work_done = mlx5e_poll_rx_cq(&rq->cq, budget);
--
2.19.1
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