diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/xdp.h | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/include/net/xdp.h b/include/net/xdp.h index b2362ddfa694..e4207699c410 100644 --- a/include/net/xdp.h +++ b/include/net/xdp.h @@ -33,16 +33,43 @@ * also mandatory during RX-ring setup. */ +enum xdp_mem_type { + MEM_TYPE_PAGE_SHARED = 0, /* Split-page refcnt based model */ + MEM_TYPE_PAGE_ORDER0, /* Orig XDP full page model */ + MEM_TYPE_MAX, +}; + +struct xdp_mem_info { + u32 type; /* enum xdp_mem_type, but known size type */ +}; + struct xdp_rxq_info { struct net_device *dev; u32 queue_index; u32 reg_state; + struct xdp_mem_info mem; } ____cacheline_aligned; /* perf critical, avoid false-sharing */ + +static inline +void xdp_return_frame(void *data, struct xdp_mem_info *mem) +{ + if (mem->type == MEM_TYPE_PAGE_SHARED) + page_frag_free(data); + + if (mem->type == MEM_TYPE_PAGE_ORDER0) { + struct page *page = virt_to_page(data); /* Assumes order0 page*/ + + put_page(page); + } +} + int xdp_rxq_info_reg(struct xdp_rxq_info *xdp_rxq, struct net_device *dev, u32 queue_index); void xdp_rxq_info_unreg(struct xdp_rxq_info *xdp_rxq); void xdp_rxq_info_unused(struct xdp_rxq_info *xdp_rxq); bool xdp_rxq_info_is_reg(struct xdp_rxq_info *xdp_rxq); +int xdp_rxq_info_reg_mem_model(struct xdp_rxq_info *xdp_rxq, + enum xdp_mem_type type, void *allocator); #endif /* __LINUX_NET_XDP_H__ */ |