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Message-Id: <20190322195903.162516-8-sdf@google.com>
Date: Fri, 22 Mar 2019 12:59:02 -0700
From: Stanislav Fomichev <sdf@...gle.com>
To: netdev@...r.kernel.org, bpf@...r.kernel.org
Cc: davem@...emloft.net, ast@...nel.org, daniel@...earbox.net,
simon.horman@...ronome.com, willemb@...gle.com,
peterpenkov96@...il.com, Stanislav Fomichev <sdf@...gle.com>,
Maxim Krasnyansky <maxk@....qualcomm.com>,
Saeed Mahameed <saeedm@...lanox.com>,
Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
intel-wired-lan@...ts.osuosl.org,
Yisen Zhuang <yisen.zhuang@...wei.com>,
Salil Mehta <salil.mehta@...wei.com>,
Michael Chan <michael.chan@...adcom.com>
Subject: [RFC bpf-next v3 7/8] net: pass net argument to the eth_get_headlen
Update all users eth_get_headlen to pass network namespace
and pass it down to the flow dissector. This commit is a noop
until administrator inserts BPF flow dissector program.
Cc: Maxim Krasnyansky <maxk@....qualcomm.com>
Cc: Saeed Mahameed <saeedm@...lanox.com>
Cc: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Cc: intel-wired-lan@...ts.osuosl.org
Cc: Yisen Zhuang <yisen.zhuang@...wei.com>
Cc: Salil Mehta <salil.mehta@...wei.com>
Cc: Michael Chan <michael.chan@...adcom.com>
Signed-off-by: Stanislav Fomichev <sdf@...gle.com>
---
drivers/net/ethernet/broadcom/bnxt/bnxt.c | 2 +-
drivers/net/ethernet/hisilicon/hns/hns_enet.c | 3 ++-
drivers/net/ethernet/hisilicon/hns3/hns3_enet.c | 3 ++-
drivers/net/ethernet/intel/fm10k/fm10k_main.c | 2 +-
drivers/net/ethernet/intel/i40e/i40e_txrx.c | 3 ++-
drivers/net/ethernet/intel/iavf/iavf_txrx.c | 3 ++-
drivers/net/ethernet/intel/ice/ice_txrx.c | 2 +-
drivers/net/ethernet/intel/igb/igb_main.c | 3 ++-
drivers/net/ethernet/intel/igc/igc_main.c | 3 ++-
drivers/net/ethernet/intel/ixgbe/ixgbe_main.c | 2 +-
drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c | 3 ++-
drivers/net/ethernet/mellanox/mlx5/core/en_tx.c | 3 ++-
drivers/net/tun.c | 3 ++-
include/linux/etherdevice.h | 2 +-
net/ethernet/eth.c | 5 +++--
15 files changed, 26 insertions(+), 16 deletions(-)
diff --git a/drivers/net/ethernet/broadcom/bnxt/bnxt.c b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
index 0bb9d7b3a2b6..664e6392f71d 100644
--- a/drivers/net/ethernet/broadcom/bnxt/bnxt.c
+++ b/drivers/net/ethernet/broadcom/bnxt/bnxt.c
@@ -899,7 +899,7 @@ static struct sk_buff *bnxt_rx_page_skb(struct bnxt *bp,
DMA_ATTR_WEAK_ORDERING);
if (unlikely(!payload))
- payload = eth_get_headlen(data_ptr, len);
+ payload = eth_get_headlen(dev_net(bp->dev), data_ptr, len);
skb = napi_alloc_skb(&rxr->bnapi->napi, payload);
if (!skb) {
diff --git a/drivers/net/ethernet/hisilicon/hns/hns_enet.c b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
index e37a0ca0db89..9d85742a7794 100644
--- a/drivers/net/ethernet/hisilicon/hns/hns_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns/hns_enet.c
@@ -603,7 +603,8 @@ static int hns_nic_poll_rx_skb(struct hns_nic_ring_data *ring_data,
} else {
ring->stats.seg_pkt_cnt++;
- pull_len = eth_get_headlen(va, HNS_RX_HEAD_SIZE);
+ pull_len = eth_get_headlen(dev_net(ndev), va,
+ HNS_RX_HEAD_SIZE);
memcpy(__skb_put(skb, pull_len), va,
ALIGN(pull_len, sizeof(long)));
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
index 1c1f17ec6be2..265bb8e47d48 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c
@@ -2438,7 +2438,8 @@ static int hns3_alloc_skb(struct hns3_enet_ring *ring, int length,
ring->stats.seg_pkt_cnt++;
u64_stats_update_end(&ring->syncp);
- ring->pull_len = eth_get_headlen(va, HNS3_RX_HEAD_SIZE);
+ ring->pull_len = eth_get_headlen(dev_net(netdev), va,
+ HNS3_RX_HEAD_SIZE);
__skb_put(skb, ring->pull_len);
hns3_nic_reuse_page(skb, ring->frag_num++, ring, ring->pull_len,
desc_cb);
diff --git a/drivers/net/ethernet/intel/fm10k/fm10k_main.c b/drivers/net/ethernet/intel/fm10k/fm10k_main.c
index 5a0419421511..790787a26954 100644
--- a/drivers/net/ethernet/intel/fm10k/fm10k_main.c
+++ b/drivers/net/ethernet/intel/fm10k/fm10k_main.c
@@ -278,7 +278,7 @@ static bool fm10k_add_rx_frag(struct fm10k_rx_buffer *rx_buffer,
/* we need the header to contain the greater of either ETH_HLEN or
* 60 bytes if the skb->len is less than 60 for skb_pad.
*/
- pull_len = eth_get_headlen(va, FM10K_RX_HDR_LEN);
+ pull_len = eth_get_headlen(dev_net(skb->dev), va, FM10K_RX_HDR_LEN);
/* align pull length to size of long to optimize memcpy performance */
memcpy(__skb_put(skb, pull_len), va, ALIGN(pull_len, sizeof(long)));
diff --git a/drivers/net/ethernet/intel/i40e/i40e_txrx.c b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
index 6c97667d20ef..9cd0d18a93d1 100644
--- a/drivers/net/ethernet/intel/i40e/i40e_txrx.c
+++ b/drivers/net/ethernet/intel/i40e/i40e_txrx.c
@@ -2035,7 +2035,8 @@ static struct sk_buff *i40e_construct_skb(struct i40e_ring *rx_ring,
/* Determine available headroom for copy */
headlen = size;
if (headlen > I40E_RX_HDR_SIZE)
- headlen = eth_get_headlen(xdp->data, I40E_RX_HDR_SIZE);
+ headlen = eth_get_headlen(dev_net(skb->dev), xdp->data,
+ I40E_RX_HDR_SIZE);
/* align pull length to size of long to optimize memcpy performance */
memcpy(__skb_put(skb, headlen), xdp->data,
diff --git a/drivers/net/ethernet/intel/iavf/iavf_txrx.c b/drivers/net/ethernet/intel/iavf/iavf_txrx.c
index 9b4d7cec2e18..377fd46deacc 100644
--- a/drivers/net/ethernet/intel/iavf/iavf_txrx.c
+++ b/drivers/net/ethernet/intel/iavf/iavf_txrx.c
@@ -1315,7 +1315,8 @@ static struct sk_buff *iavf_construct_skb(struct iavf_ring *rx_ring,
/* Determine available headroom for copy */
headlen = size;
if (headlen > IAVF_RX_HDR_SIZE)
- headlen = eth_get_headlen(va, IAVF_RX_HDR_SIZE);
+ headlen = eth_get_headlen(dev_net(skb->dev), va,
+ IAVF_RX_HDR_SIZE);
/* align pull length to size of long to optimize memcpy performance */
memcpy(__skb_put(skb, headlen), va, ALIGN(headlen, sizeof(long)));
diff --git a/drivers/net/ethernet/intel/ice/ice_txrx.c b/drivers/net/ethernet/intel/ice/ice_txrx.c
index fad308c936b2..0854df62646d 100644
--- a/drivers/net/ethernet/intel/ice/ice_txrx.c
+++ b/drivers/net/ethernet/intel/ice/ice_txrx.c
@@ -704,7 +704,7 @@ static void ice_pull_tail(struct sk_buff *skb)
/* we need the header to contain the greater of either ETH_HLEN or
* 60 bytes if the skb->len is less than 60 for skb_pad.
*/
- pull_len = eth_get_headlen(va, ICE_RX_HDR_SIZE);
+ pull_len = eth_get_headlen(dev_net(skb->dev), va, ICE_RX_HDR_SIZE);
/* align pull length to size of long to optimize memcpy performance */
skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long)));
diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c
index bea7175d171b..acaccbc86a84 100644
--- a/drivers/net/ethernet/intel/igb/igb_main.c
+++ b/drivers/net/ethernet/intel/igb/igb_main.c
@@ -8051,7 +8051,8 @@ static struct sk_buff *igb_construct_skb(struct igb_ring *rx_ring,
/* Determine available headroom for copy */
headlen = size;
if (headlen > IGB_RX_HDR_LEN)
- headlen = eth_get_headlen(va, IGB_RX_HDR_LEN);
+ headlen = eth_get_headlen(dev_net(skb->dev), va,
+ IGB_RX_HDR_LEN);
/* align pull length to size of long to optimize memcpy performance */
memcpy(__skb_put(skb, headlen), va, ALIGN(headlen, sizeof(long)));
diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c
index a883b3f357e7..5fe2f95f16ab 100644
--- a/drivers/net/ethernet/intel/igc/igc_main.c
+++ b/drivers/net/ethernet/intel/igc/igc_main.c
@@ -1199,7 +1199,8 @@ static struct sk_buff *igc_construct_skb(struct igc_ring *rx_ring,
/* Determine available headroom for copy */
headlen = size;
if (headlen > IGC_RX_HDR_LEN)
- headlen = eth_get_headlen(va, IGC_RX_HDR_LEN);
+ headlen = eth_get_headlen(dev_net(skb->dev), va,
+ IGC_RX_HDR_LEN);
/* align pull length to size of long to optimize memcpy performance */
memcpy(__skb_put(skb, headlen), va, ALIGN(headlen, sizeof(long)));
diff --git a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
index 16c728984164..b9cfc9241cac 100644
--- a/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
+++ b/drivers/net/ethernet/intel/ixgbe/ixgbe_main.c
@@ -1800,7 +1800,7 @@ static void ixgbe_pull_tail(struct ixgbe_ring *rx_ring,
* we need the header to contain the greater of either ETH_HLEN or
* 60 bytes if the skb->len is less than 60 for skb_pad.
*/
- pull_len = eth_get_headlen(va, IXGBE_RX_HDR_SIZE);
+ pull_len = eth_get_headlen(dev_net(skb->dev), va, IXGBE_RX_HDR_SIZE);
/* align pull length to size of long to optimize memcpy performance */
skb_copy_to_linear_data(skb, va, ALIGN(pull_len, sizeof(long)));
diff --git a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
index 49e23afa05a2..252fe0de6b56 100644
--- a/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
+++ b/drivers/net/ethernet/intel/ixgbevf/ixgbevf_main.c
@@ -895,7 +895,8 @@ struct sk_buff *ixgbevf_construct_skb(struct ixgbevf_ring *rx_ring,
/* Determine available headroom for copy */
headlen = size;
if (headlen > IXGBEVF_RX_HDR_SIZE)
- headlen = eth_get_headlen(xdp->data, IXGBEVF_RX_HDR_SIZE);
+ headlen = eth_get_headlen(dev_net(skb->dev), xdp->data,
+ IXGBEVF_RX_HDR_SIZE);
/* align pull length to size of long to optimize memcpy performance */
memcpy(__skb_put(skb, headlen), xdp->data,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
index ce1406bb1512..6c538b7c0e25 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tx.c
@@ -162,7 +162,8 @@ static inline u16 mlx5e_calc_min_inline(enum mlx5_inline_modes mode,
case MLX5_INLINE_MODE_NONE:
return 0;
case MLX5_INLINE_MODE_TCP_UDP:
- hlen = eth_get_headlen(skb->data, skb_headlen(skb));
+ hlen = eth_get_headlen(dev_net(skb->dev), skb->data,
+ skb_headlen(skb));
if (hlen == ETH_HLEN && !skb_vlan_tag_present(skb))
hlen += VLAN_HLEN;
break;
diff --git a/drivers/net/tun.c b/drivers/net/tun.c
index ef3b65514976..b020464faf5e 100644
--- a/drivers/net/tun.c
+++ b/drivers/net/tun.c
@@ -1965,7 +1965,8 @@ static ssize_t tun_get_user(struct tun_struct *tun, struct tun_file *tfile,
if (frags) {
/* Exercise flow dissector code path. */
- u32 headlen = eth_get_headlen(skb->data, skb_headlen(skb));
+ u32 headlen = eth_get_headlen(dev_net(tun->dev), skb->data,
+ skb_headlen(skb));
if (unlikely(headlen > skb_headlen(skb))) {
this_cpu_inc(tun->pcpu_stats->rx_dropped);
diff --git a/include/linux/etherdevice.h b/include/linux/etherdevice.h
index e2f3b21cd72a..71a441ffab3f 100644
--- a/include/linux/etherdevice.h
+++ b/include/linux/etherdevice.h
@@ -33,7 +33,7 @@ struct device;
int eth_platform_get_mac_address(struct device *dev, u8 *mac_addr);
unsigned char *arch_get_platform_mac_address(void);
int nvmem_get_mac_address(struct device *dev, void *addrbuf);
-u32 eth_get_headlen(void *data, unsigned int max_len);
+u32 eth_get_headlen(const struct net *net, void *data, unsigned int max_len);
__be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev);
extern const struct header_ops eth_header_ops;
diff --git a/net/ethernet/eth.c b/net/ethernet/eth.c
index 1e439549c419..0202e72e20a4 100644
--- a/net/ethernet/eth.c
+++ b/net/ethernet/eth.c
@@ -119,13 +119,14 @@ EXPORT_SYMBOL(eth_header);
/**
* eth_get_headlen - determine the length of header for an ethernet frame
+ * @net: pointer to device network namespace
* @data: pointer to start of frame
* @len: total length of frame
*
* Make a best effort attempt to pull the length for all of the headers for
* a given frame in a linear buffer.
*/
-u32 eth_get_headlen(void *data, unsigned int len)
+u32 eth_get_headlen(const struct net *net, void *data, unsigned int len)
{
const unsigned int flags = FLOW_DISSECTOR_F_PARSE_1ST_FRAG;
const struct ethhdr *eth = (const struct ethhdr *)data;
@@ -136,7 +137,7 @@ u32 eth_get_headlen(void *data, unsigned int len)
return len;
/* parse any remaining L2/L3 headers, check for L4 */
- if (!skb_flow_dissect_flow_keys_basic(NULL, NULL, &keys, data,
+ if (!skb_flow_dissect_flow_keys_basic(net, NULL, &keys, data,
eth->h_proto, sizeof(*eth),
len, flags))
return max_t(u32, keys.control.thoff, sizeof(*eth));
--
2.21.0.392.gf8f6787159e-goog
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