Commit c43f1255 authored by Stanislav Fomichev's avatar Stanislav Fomichev Committed by Daniel Borkmann
Browse files

net: pass net_device argument to the eth_get_headlen



Update all users of eth_get_headlen to pass network device, fetch
network namespace from it and pass it down to the flow dissector.
This commit is a noop until administrator inserts BPF flow dissector
program.

Cc: Maxim Krasnyansky <maxk@qti.qualcomm.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Cc: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Cc: intel-wired-lan@lists.osuosl.org
Cc: Yisen Zhuang <yisen.zhuang@huawei.com>
Cc: Salil Mehta <salil.mehta@huawei.com>
Cc: Michael Chan <michael.chan@broadcom.com>
Cc: Igor Russkikh <igor.russkikh@aquantia.com>
Signed-off-by: default avatarStanislav Fomichev <sdf@google.com>
Signed-off-by: default avatarDaniel Borkmann <daniel@iogearbox.net>
parent 9b52e3f2
......@@ -354,7 +354,8 @@ int aq_ring_rx_clean(struct aq_ring_s *self,
hdr_len = buff->len;
if (hdr_len > AQ_CFG_RX_HDR_SIZE)
hdr_len = eth_get_headlen(aq_buf_vaddr(&buff->rxdata),
hdr_len = eth_get_headlen(skb->dev,
aq_buf_vaddr(&buff->rxdata),
AQ_CFG_RX_HDR_SIZE);
memcpy(__skb_put(skb, hdr_len), aq_buf_vaddr(&buff->rxdata),
......
......@@ -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(bp->dev, data_ptr, len);
skb = napi_alloc_skb(&rxr->bnapi->napi, payload);
if (!skb) {
......
......@@ -598,7 +598,7 @@ 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(ndev, va, HNS_RX_HEAD_SIZE);
memcpy(__skb_put(skb, pull_len), va,
ALIGN(pull_len, sizeof(long)));
......
......@@ -2580,7 +2580,7 @@ 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(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);
......
......@@ -280,7 +280,7 @@ 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(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)));
......
......@@ -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(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,
......
......@@ -1315,7 +1315,7 @@ 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(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)));
......
......@@ -699,7 +699,7 @@ ice_construct_skb(struct ice_ring *rx_ring, struct ice_rx_buf *rx_buf,
/* Determine available headroom for copy */
headlen = size;
if (headlen > ICE_RX_HDR_SIZE)
headlen = eth_get_headlen(va, ICE_RX_HDR_SIZE);
headlen = eth_get_headlen(skb->dev, va, ICE_RX_HDR_SIZE);
/* align pull length to size of long to optimize memcpy performance */
memcpy(__skb_put(skb, headlen), va, ALIGN(headlen, sizeof(long)));
......
......@@ -8051,7 +8051,7 @@ 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(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)));
......
......@@ -1199,7 +1199,7 @@ 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(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)));
......
......@@ -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(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)));
......
......@@ -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(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,
......
......@@ -163,7 +163,7 @@ 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(skb->dev, skb->data, skb_headlen(skb));
if (hlen == ETH_HLEN && !skb_vlan_tag_present(skb))
hlen += VLAN_HLEN;
break;
......
......@@ -1965,7 +1965,8 @@ drop:
if (frags) {
/* Exercise flow dissector code path. */
u32 headlen = eth_get_headlen(skb->data, skb_headlen(skb));
u32 headlen = eth_get_headlen(tun->dev, skb->data,
skb_headlen(skb));
if (unlikely(headlen > skb_headlen(skb))) {
this_cpu_inc(tun->pcpu_stats->rx_dropped);
......
......@@ -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_device *dev, void *data, unsigned int len);
__be16 eth_type_trans(struct sk_buff *skb, struct net_device *dev);
extern const struct header_ops eth_header_ops;
......
......@@ -119,13 +119,14 @@ EXPORT_SYMBOL(eth_header);
/**
* eth_get_headlen - determine the length of header for an ethernet frame
* @dev: pointer to network device
* @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_device *dev, 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(dev_net(dev), NULL, &keys, data,
eth->h_proto, sizeof(*eth),
len, flags))
return max_t(u32, keys.control.thoff, sizeof(*eth));
......
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