diff options
Diffstat (limited to 'include/net/xdp.h')
-rw-r--r-- | include/net/xdp.h | 42 |
1 files changed, 29 insertions, 13 deletions
diff --git a/include/net/xdp.h b/include/net/xdp.h index d3005bef812f..dbe9c60797e1 100644 --- a/include/net/xdp.h +++ b/include/net/xdp.h @@ -104,6 +104,7 @@ struct xdp_frame { struct net_device *dev_rx; /* used by cpumap */ }; + static inline struct skb_shared_info * xdp_get_shared_info_from_frame(struct xdp_frame *frame) { @@ -113,6 +114,12 @@ xdp_get_shared_info_from_frame(struct xdp_frame *frame) SKB_DATA_ALIGN(sizeof(struct skb_shared_info))); } +struct xdp_cpumap_stats { + unsigned int redirect; + unsigned int pass; + unsigned int drop; +}; + /* Clear kernel pointers in xdp_frame */ static inline void xdp_scrub_frame(struct xdp_frame *frame) { @@ -136,39 +143,48 @@ void xdp_convert_frame_to_buff(struct xdp_frame *frame, struct xdp_buff *xdp) xdp->frame_sz = frame->frame_sz; } -/* Convert xdp_buff to xdp_frame */ static inline -struct xdp_frame *xdp_convert_buff_to_frame(struct xdp_buff *xdp) +int xdp_update_frame_from_buff(struct xdp_buff *xdp, + struct xdp_frame *xdp_frame) { - struct xdp_frame *xdp_frame; - int metasize; - int headroom; - - if (xdp->rxq->mem.type == MEM_TYPE_XSK_BUFF_POOL) - return xdp_convert_zc_to_xdp_frame(xdp); + int metasize, headroom; /* Assure headroom is available for storing info */ headroom = xdp->data - xdp->data_hard_start; metasize = xdp->data - xdp->data_meta; metasize = metasize > 0 ? metasize : 0; if (unlikely((headroom - metasize) < sizeof(*xdp_frame))) - return NULL; + return -ENOSPC; /* Catch if driver didn't reserve tailroom for skb_shared_info */ if (unlikely(xdp->data_end > xdp_data_hard_end(xdp))) { XDP_WARN("Driver BUG: missing reserved tailroom"); - return NULL; + return -ENOSPC; } - /* Store info in top of packet */ - xdp_frame = xdp->data_hard_start; - xdp_frame->data = xdp->data; xdp_frame->len = xdp->data_end - xdp->data; xdp_frame->headroom = headroom - sizeof(*xdp_frame); xdp_frame->metasize = metasize; xdp_frame->frame_sz = xdp->frame_sz; + return 0; +} + +/* Convert xdp_buff to xdp_frame */ +static inline +struct xdp_frame *xdp_convert_buff_to_frame(struct xdp_buff *xdp) +{ + struct xdp_frame *xdp_frame; + + if (xdp->rxq->mem.type == MEM_TYPE_XSK_BUFF_POOL) + return xdp_convert_zc_to_xdp_frame(xdp); + + /* Store info in top of packet */ + xdp_frame = xdp->data_hard_start; + if (unlikely(xdp_update_frame_from_buff(xdp, xdp_frame) < 0)) + return NULL; + /* rxq only valid until napi_schedule ends, convert to xdp_mem_info */ xdp_frame->mem = xdp->rxq->mem; |