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Diffstat (limited to 'include/net/xdp_sock_drv.h')
-rw-r--r--include/net/xdp_sock_drv.h51
1 files changed, 51 insertions, 0 deletions
diff --git a/include/net/xdp_sock_drv.h b/include/net/xdp_sock_drv.h
index 5425f7ad5e..c9aec9ab61 100644
--- a/include/net/xdp_sock_drv.h
+++ b/include/net/xdp_sock_drv.h
@@ -12,6 +12,12 @@
#define XDP_UMEM_MIN_CHUNK_SHIFT 11
#define XDP_UMEM_MIN_CHUNK_SIZE (1 << XDP_UMEM_MIN_CHUNK_SHIFT)
+struct xsk_cb_desc {
+ void *src;
+ u8 off;
+ u8 bytes;
+};
+
#ifdef CONFIG_XDP_SOCKETS
void xsk_tx_completed(struct xsk_buff_pool *pool, u32 nb_entries);
@@ -47,6 +53,12 @@ static inline void xsk_pool_set_rxq_info(struct xsk_buff_pool *pool,
xp_set_rxq_info(pool, rxq);
}
+static inline void xsk_pool_fill_cb(struct xsk_buff_pool *pool,
+ struct xsk_cb_desc *desc)
+{
+ xp_fill_cb(pool, desc);
+}
+
static inline unsigned int xsk_pool_get_napi_id(struct xsk_buff_pool *pool)
{
#ifdef CONFIG_NET_RX_BUSY_POLL
@@ -183,6 +195,30 @@ static inline void *xsk_buff_raw_get_data(struct xsk_buff_pool *pool, u64 addr)
return xp_raw_get_data(pool, addr);
}
+#define XDP_TXMD_FLAGS_VALID ( \
+ XDP_TXMD_FLAGS_TIMESTAMP | \
+ XDP_TXMD_FLAGS_CHECKSUM | \
+ 0)
+
+static inline bool xsk_buff_valid_tx_metadata(struct xsk_tx_metadata *meta)
+{
+ return !(meta->flags & ~XDP_TXMD_FLAGS_VALID);
+}
+
+static inline struct xsk_tx_metadata *xsk_buff_get_metadata(struct xsk_buff_pool *pool, u64 addr)
+{
+ struct xsk_tx_metadata *meta;
+
+ if (!pool->tx_metadata_len)
+ return NULL;
+
+ meta = xp_raw_get_data(pool, addr) - pool->tx_metadata_len;
+ if (unlikely(!xsk_buff_valid_tx_metadata(meta)))
+ return NULL; /* no way to signal the error to the user */
+
+ return meta;
+}
+
static inline void xsk_buff_dma_sync_for_cpu(struct xdp_buff *xdp, struct xsk_buff_pool *pool)
{
struct xdp_buff_xsk *xskb = container_of(xdp, struct xdp_buff_xsk, xdp);
@@ -268,6 +304,11 @@ static inline void xsk_pool_set_rxq_info(struct xsk_buff_pool *pool,
{
}
+static inline void xsk_pool_fill_cb(struct xsk_buff_pool *pool,
+ struct xsk_cb_desc *desc)
+{
+}
+
static inline unsigned int xsk_pool_get_napi_id(struct xsk_buff_pool *pool)
{
return 0;
@@ -351,6 +392,16 @@ static inline void *xsk_buff_raw_get_data(struct xsk_buff_pool *pool, u64 addr)
return NULL;
}
+static inline bool xsk_buff_valid_tx_metadata(struct xsk_tx_metadata *meta)
+{
+ return false;
+}
+
+static inline struct xsk_tx_metadata *xsk_buff_get_metadata(struct xsk_buff_pool *pool, u64 addr)
+{
+ return NULL;
+}
+
static inline void xsk_buff_dma_sync_for_cpu(struct xdp_buff *xdp, struct xsk_buff_pool *pool)
{
}