diff options
| author | Sven Auhagen <sven.auhagen@voleatech.de> | 2020-11-11 18:04:49 +0100 |
|---|---|---|
| committer | Tony Nguyen <anthony.l.nguyen@intel.com> | 2020-12-09 15:26:58 -0800 |
| commit | b829ec1a66bc3dda4b01ab4c57d41ad1a1f82fed (patch) | |
| tree | b8000a9925f414af6c82bfacfd877ef45f45e266 | |
| parent | cfb33e174fa25d9d830683a1e1b22850546103b5 (diff) | |
| download | linux-b829ec1a66bc3dda4b01ab4c57d41ad1a1f82fed.tar.gz | |
igb: take VLAN double header into account
Increase the packet header padding to include double VLAN tagging.
This patch uses a macro for this.
Fixes: 9cbc948b5a20 ("igb: add XDP support")
Suggested-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Acked-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Sven Auhagen <sven.auhagen@voleatech.de>
Tested-by: Sandeep Penigalapati <sandeep.penigalapati@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb.h | 5 | ||||
| -rw-r--r-- | drivers/net/ethernet/intel/igb/igb_main.c | 7 |
2 files changed, 8 insertions, 4 deletions
diff --git a/drivers/net/ethernet/intel/igb/igb.h b/drivers/net/ethernet/intel/igb/igb.h index 0286d2fceee4d..aaa954aae5744 100644 --- a/drivers/net/ethernet/intel/igb/igb.h +++ b/drivers/net/ethernet/intel/igb/igb.h @@ -138,6 +138,8 @@ struct vf_mac_filter { /* this is the size past which hardware will drop packets when setting LPE=0 */ #define MAXIMUM_ETHERNET_VLAN_SIZE 1522 +#define IGB_ETH_PKT_HDR_PAD (ETH_HLEN + ETH_FCS_LEN + (VLAN_HLEN * 2)) + /* Supported Rx Buffer Sizes */ #define IGB_RXBUFFER_256 256 #define IGB_RXBUFFER_1536 1536 @@ -247,6 +249,9 @@ enum igb_tx_flags { #define IGB_SFF_ADDRESSING_MODE 0x4 #define IGB_SFF_8472_UNSUP 0x00 +/* TX resources are shared between XDP and netstack + * and we need to tag the buffer type to distinguish them + */ enum igb_tx_buf_type { IGB_TYPE_SKB = 0, IGB_TYPE_XDP, diff --git a/drivers/net/ethernet/intel/igb/igb_main.c b/drivers/net/ethernet/intel/igb/igb_main.c index 08cc6f59aa2e9..0a9198037b989 100644 --- a/drivers/net/ethernet/intel/igb/igb_main.c +++ b/drivers/net/ethernet/intel/igb/igb_main.c @@ -2826,7 +2826,7 @@ static int igb_setup_tc(struct net_device *dev, enum tc_setup_type type, static int igb_xdp_setup(struct net_device *dev, struct bpf_prog *prog) { - int i, frame_size = dev->mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; + int i, frame_size = dev->mtu + IGB_ETH_PKT_HDR_PAD; struct igb_adapter *adapter = netdev_priv(dev); bool running = netif_running(dev); struct bpf_prog *old_prog; @@ -3950,8 +3950,7 @@ static int igb_sw_init(struct igb_adapter *adapter) /* set default work limits */ adapter->tx_work_limit = IGB_DEFAULT_TX_WORK; - adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN + - VLAN_HLEN; + adapter->max_frame_size = netdev->mtu + IGB_ETH_PKT_HDR_PAD; adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; spin_lock_init(&adapter->nfc_lock); @@ -6491,7 +6490,7 @@ static void igb_get_stats64(struct net_device *netdev, static int igb_change_mtu(struct net_device *netdev, int new_mtu) { struct igb_adapter *adapter = netdev_priv(netdev); - int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN; + int max_frame = new_mtu + IGB_ETH_PKT_HDR_PAD; if (adapter->xdp_prog) { int i; |