diff options
Diffstat (limited to 'net/core/xdp.c')
| -rw-r--r-- | net/core/xdp.c | 48 |
1 files changed, 38 insertions, 10 deletions
diff --git a/net/core/xdp.c b/net/core/xdp.c index 8c92fc553317..fb85aca81961 100644 --- a/net/core/xdp.c +++ b/net/core/xdp.c @@ -720,7 +720,10 @@ __diag_ignore_all("-Wmissing-prototypes", * @ctx: XDP context pointer. * @timestamp: Return value pointer. * - * Returns 0 on success or ``-errno`` on error. + * Return: + * * Returns 0 on success or ``-errno`` on error. + * * ``-EOPNOTSUPP`` : means device driver does not implement kfunc + * * ``-ENODATA`` : means no RX-timestamp available for this frame */ __bpf_kfunc int bpf_xdp_metadata_rx_timestamp(const struct xdp_md *ctx, u64 *timestamp) { @@ -731,10 +734,21 @@ __bpf_kfunc int bpf_xdp_metadata_rx_timestamp(const struct xdp_md *ctx, u64 *tim * bpf_xdp_metadata_rx_hash - Read XDP frame RX hash. * @ctx: XDP context pointer. * @hash: Return value pointer. + * @rss_type: Return value pointer for RSS type. * - * Returns 0 on success or ``-errno`` on error. + * The RSS hash type (@rss_type) specifies what portion of packet headers NIC + * hardware used when calculating RSS hash value. The RSS type can be decoded + * via &enum xdp_rss_hash_type either matching on individual L3/L4 bits + * ``XDP_RSS_L*`` or by combined traditional *RSS Hashing Types* + * ``XDP_RSS_TYPE_L*``. + * + * Return: + * * Returns 0 on success or ``-errno`` on error. + * * ``-EOPNOTSUPP`` : means device driver doesn't implement kfunc + * * ``-ENODATA`` : means no RX-hash available for this frame */ -__bpf_kfunc int bpf_xdp_metadata_rx_hash(const struct xdp_md *ctx, u32 *hash) +__bpf_kfunc int bpf_xdp_metadata_rx_hash(const struct xdp_md *ctx, u32 *hash, + enum xdp_rss_hash_type *rss_type) { return -EOPNOTSUPP; } @@ -774,20 +788,34 @@ static int __init xdp_metadata_init(void) } late_initcall(xdp_metadata_init); +void xdp_set_features_flag(struct net_device *dev, xdp_features_t val) +{ + val &= NETDEV_XDP_ACT_MASK; + if (dev->xdp_features == val) + return; + + dev->xdp_features = val; + + if (dev->reg_state == NETREG_REGISTERED) + call_netdevice_notifiers(NETDEV_XDP_FEAT_CHANGE, dev); +} +EXPORT_SYMBOL_GPL(xdp_set_features_flag); + void xdp_features_set_redirect_target(struct net_device *dev, bool support_sg) { - dev->xdp_features |= NETDEV_XDP_ACT_NDO_XMIT; - if (support_sg) - dev->xdp_features |= NETDEV_XDP_ACT_NDO_XMIT_SG; + xdp_features_t val = (dev->xdp_features | NETDEV_XDP_ACT_NDO_XMIT); - call_netdevice_notifiers(NETDEV_XDP_FEAT_CHANGE, dev); + if (support_sg) + val |= NETDEV_XDP_ACT_NDO_XMIT_SG; + xdp_set_features_flag(dev, val); } EXPORT_SYMBOL_GPL(xdp_features_set_redirect_target); void xdp_features_clear_redirect_target(struct net_device *dev) { - dev->xdp_features &= ~(NETDEV_XDP_ACT_NDO_XMIT | - NETDEV_XDP_ACT_NDO_XMIT_SG); - call_netdevice_notifiers(NETDEV_XDP_FEAT_CHANGE, dev); + xdp_features_t val = dev->xdp_features; + + val &= ~(NETDEV_XDP_ACT_NDO_XMIT | NETDEV_XDP_ACT_NDO_XMIT_SG); + xdp_set_features_flag(dev, val); } EXPORT_SYMBOL_GPL(xdp_features_clear_redirect_target); |