diff options
| author | Atzm Watanabe <atzm@stratosphere.co.jp> | 2013-12-17 22:53:40 +0900 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-12-18 00:36:16 -0500 |
| commit | a0cdfcf39362410d5ea983f4daf67b38de129408 (patch) | |
| tree | 31de8d8010bafd58bade0701fb3f501bd6e4c0a7 /net/packet/af_packet.c | |
| parent | e4d26f4b080f55e9577b45e6b51a04971eb459e9 (diff) | |
| download | lwn-a0cdfcf39362410d5ea983f4daf67b38de129408.tar.gz lwn-a0cdfcf39362410d5ea983f4daf67b38de129408.zip | |
packet: deliver VLAN TPID to userspace
This enables userspace to get VLAN TPID as well as the VLAN TCI.
Signed-off-by: Atzm Watanabe <atzm@stratosphere.co.jp>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/packet/af_packet.c')
| -rw-r--r-- | net/packet/af_packet.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c index f281999ba92e..dd3840846ce2 100644 --- a/net/packet/af_packet.c +++ b/net/packet/af_packet.c @@ -977,9 +977,11 @@ static void prb_fill_vlan_info(struct tpacket_kbdq_core *pkc, { if (vlan_tx_tag_present(pkc->skb)) { ppd->hv1.tp_vlan_tci = vlan_tx_tag_get(pkc->skb); - ppd->tp_status = TP_STATUS_VLAN_VALID; + ppd->hv1.tp_vlan_tpid = ntohs(pkc->skb->vlan_proto); + ppd->tp_status = TP_STATUS_VLAN_VALID | TP_STATUS_VLAN_TPID_VALID; } else { ppd->hv1.tp_vlan_tci = 0; + ppd->hv1.tp_vlan_tpid = 0; ppd->tp_status = TP_STATUS_AVAILABLE; } } @@ -987,6 +989,7 @@ static void prb_fill_vlan_info(struct tpacket_kbdq_core *pkc, static void prb_run_all_ft_ops(struct tpacket_kbdq_core *pkc, struct tpacket3_hdr *ppd) { + ppd->hv1.tp_padding = 0; prb_fill_vlan_info(pkc, ppd); if (pkc->feature_req_word & TP_FT_REQ_FILL_RXHASH) @@ -1925,9 +1928,11 @@ static int tpacket_rcv(struct sk_buff *skb, struct net_device *dev, h.h2->tp_nsec = ts.tv_nsec; if (vlan_tx_tag_present(skb)) { h.h2->tp_vlan_tci = vlan_tx_tag_get(skb); - status |= TP_STATUS_VLAN_VALID; + h.h2->tp_vlan_tpid = ntohs(skb->vlan_proto); + status |= TP_STATUS_VLAN_VALID | TP_STATUS_VLAN_TPID_VALID; } else { h.h2->tp_vlan_tci = 0; + h.h2->tp_vlan_tpid = 0; } memset(h.h2->tp_padding, 0, sizeof(h.h2->tp_padding)); hdrlen = sizeof(*h.h2); @@ -2875,11 +2880,12 @@ static int packet_recvmsg(struct kiocb *iocb, struct socket *sock, aux.tp_net = skb_network_offset(skb); if (vlan_tx_tag_present(skb)) { aux.tp_vlan_tci = vlan_tx_tag_get(skb); - aux.tp_status |= TP_STATUS_VLAN_VALID; + aux.tp_vlan_tpid = ntohs(skb->vlan_proto); + aux.tp_status |= TP_STATUS_VLAN_VALID | TP_STATUS_VLAN_TPID_VALID; } else { aux.tp_vlan_tci = 0; + aux.tp_vlan_tpid = 0; } - aux.tp_padding = 0; put_cmsg(msg, SOL_PACKET, PACKET_AUXDATA, sizeof(aux), &aux); } |