summaryrefslogtreecommitdiffstats
path: root/include/net/xdp.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/net/xdp.h')
-rw-r--r--include/net/xdp.h42
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;