ring: implement setup of tpacket v3 ring

Implement ring setup routines and structures for TPACKET_V3.

Signed-off-by: Daniel Borkmann <dborkman@redhat.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/ring_rx.h b/ring_rx.h
index b1114a6..0a2701f 100644
--- a/ring_rx.h
+++ b/ring_rx.h
@@ -23,6 +23,11 @@ static inline int user_may_pull_from_rx(struct tpacket2_hdr *hdr)
 	return ((hdr->tp_status & TP_STATUS_USER) == TP_STATUS_USER);
 }
 
+static inline int user_may_pull_from_rx_block(struct block_desc *pbd)
+{
+	return ((pbd->h1.block_status & TP_STATUS_USER) == TP_STATUS_USER);
+}
+
 static inline void kernel_may_pull_from_rx(struct tpacket2_hdr *hdr)
 {
 	hdr->tp_status = TP_STATUS_KERNEL;