From 2f39b007d5382d01fc424e22b8e1a3681c2bc8cf Mon Sep 17 00:00:00 2001 From: Daniel Borkmann Date: Fri, 31 May 2013 11:18:36 +0200 Subject: ring: implement setup of tpacket v3 ring Implement ring setup routines and structures for TPACKET_V3. Signed-off-by: Daniel Borkmann --- ring_rx.c | 10 +++++++--- 1 file changed, 7 insertions(+), 3 deletions(-) (limited to 'ring_rx.c') diff --git a/ring_rx.c b/ring_rx.c index fc735cc..a3d8e4d 100644 --- a/ring_rx.c +++ b/ring_rx.c @@ -57,6 +57,10 @@ void setup_rx_ring_layout(int sock, struct ring *ring, unsigned int size, sizeof(struct tpacket_req) != offsetof(struct tpacket_req3, tp_retire_blk_tov)); + ring->layout3.tp_retire_blk_tov = 0; + ring->layout3.tp_sizeof_priv = 0; + ring->layout3.tp_feature_req_word = 0; + set_sockopt_tpacket_v3(sock); } else { set_sockopt_tpacket_v2(sock); @@ -68,10 +72,11 @@ void setup_rx_ring_layout(int sock, struct ring *ring, unsigned int size, void create_rx_ring(int sock, struct ring *ring, int verbose) { int ret; + bool v3 = get_sockopt_tpacket(sock) == TPACKET_V3; retry: - ret = setsockopt(sock, SOL_PACKET, PACKET_RX_RING, &ring->layout, - sizeof(ring->layout)); + ret = setsockopt(sock, SOL_PACKET, PACKET_RX_RING, &ring->raw, + v3 ? sizeof(ring->layout3) : sizeof(ring->layout)); if (errno == ENOMEM && ring->layout.tp_block_nr > 1) { ring->layout.tp_block_nr >>= 1; ring->layout.tp_frame_nr = ring->layout.tp_block_size / @@ -79,7 +84,6 @@ retry: ring->layout.tp_block_nr; goto retry; } - if (ret < 0) panic("Cannot allocate RX_RING!\n"); -- cgit v1.2.3-54-g00ecf