From: Ouyang Changchun <changchun.ouyang@intel.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [PATCH v4 05/26] ether: Add soft vlan encap/decap functions
Date: Mon, 9 Feb 2015 09:13:54 +0800 [thread overview]
Message-ID: <1423444455-11330-6-git-send-email-changchun.ouyang@intel.com> (raw)
In-Reply-To: <1423444455-11330-1-git-send-email-changchun.ouyang@intel.com>
It is helpful to allow device drivers that don't support hardware
VLAN stripping to emulate this in software. This allows application
to be device independent.
Avoid discarding shared mbufs. Make a copy in rte_vlan_insert() of any
packet to be tagged that has a reference count > 1.
Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>
Signed-off-by: Changchun Ouyang <changchun.ouyang@intel.com>
---
lib/librte_ether/rte_ether.h | 76 ++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 76 insertions(+)
diff --git a/lib/librte_ether/rte_ether.h b/lib/librte_ether/rte_ether.h
index 7e7d22c..74f71c2 100644
--- a/lib/librte_ether/rte_ether.h
+++ b/lib/librte_ether/rte_ether.h
@@ -49,6 +49,8 @@ extern "C" {
#include <rte_memcpy.h>
#include <rte_random.h>
+#include <rte_mbuf.h>
+#include <rte_byteorder.h>
#define ETHER_ADDR_LEN 6 /**< Length of Ethernet address. */
#define ETHER_TYPE_LEN 2 /**< Length of Ethernet type field. */
@@ -333,6 +335,80 @@ struct vxlan_hdr {
#define ETHER_VXLAN_HLEN (sizeof(struct udp_hdr) + sizeof(struct vxlan_hdr))
/**< VXLAN tunnel header length. */
+/**
+ * Extract VLAN tag information into mbuf
+ *
+ * Software version of VLAN stripping
+ *
+ * @param m
+ * The packet mbuf.
+ * @return
+ * - 0: Success
+ * - 1: not a vlan packet
+ */
+static inline int rte_vlan_strip(struct rte_mbuf *m)
+{
+ struct ether_hdr *eh
+ = rte_pktmbuf_mtod(m, struct ether_hdr *);
+
+ if (eh->ether_type != ETHER_TYPE_VLAN)
+ return -1;
+
+ struct vlan_hdr *vh = (struct vlan_hdr *)(eh + 1);
+ m->ol_flags |= PKT_RX_VLAN_PKT;
+ m->vlan_tci = rte_be_to_cpu_16(vh->vlan_tci);
+
+ /* Copy ether header over rather than moving whole packet */
+ memmove(rte_pktmbuf_adj(m, sizeof(struct vlan_hdr)),
+ eh, 2 * ETHER_ADDR_LEN);
+
+ return 0;
+}
+
+/**
+ * Insert VLAN tag into mbuf.
+ *
+ * Software version of VLAN unstripping
+ *
+ * @param m
+ * The packet mbuf.
+ * @return
+ * - 0: On success
+ * -EPERM: mbuf is is shared overwriting would be unsafe
+ * -ENOSPC: not enough headroom in mbuf
+ */
+static inline int rte_vlan_insert(struct rte_mbuf **m)
+{
+ struct ether_hdr *oh, *nh;
+ struct vlan_hdr *vh;
+
+#ifdef RTE_MBUF_REFCNT
+ /* Can't insert header if mbuf is shared */
+ if (rte_mbuf_refcnt_read(*m) > 1) {
+ struct rte_mbuf *copy;
+
+ copy = rte_pktmbuf_clone(*m, (*m)->pool);
+ if (unlikely(copy == NULL))
+ return -ENOMEM;
+ rte_pktmbuf_free(*m);
+ *m = copy;
+ }
+#endif
+ oh = rte_pktmbuf_mtod(*m, struct ether_hdr *);
+ nh = (struct ether_hdr *)
+ rte_pktmbuf_prepend(*m, sizeof(struct vlan_hdr));
+ if (nh == NULL)
+ return -ENOSPC;
+
+ memmove(nh, oh, 2 * ETHER_ADDR_LEN);
+ nh->ether_type = ETHER_TYPE_VLAN;
+
+ vh = (struct vlan_hdr *) (nh + 1);
+ vh->vlan_tci = rte_cpu_to_be_16((*m)->vlan_tci);
+
+ return 0;
+}
+
#ifdef __cplusplus
}
#endif
--
1.8.4.2
next prev parent reply other threads:[~2015-02-09 1:14 UTC|newest]
Thread overview: 132+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-01-15 5:15 [dpdk-dev] [PATCH 00/22] Single virtio implementation Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 01/22] virtio: Rearrange resource initialization Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 02/22] virtio: Use weaker barriers Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 03/22] virtio: Allow starting with link down Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 04/22] virtio: Add support for Link State interrupt Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 05/22] ether: Add soft vlan encap/decap functions Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 06/22] virtio: Use software vlan stripping Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 07/22] virtio: Remove unnecessary adapter structure Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 08/22] virtio: Remove redundant vq_alignment Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 09/22] virtio: Fix how states are handled during initialization Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 10/22] virtio: Make vtpci_get_status local Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 11/22] virtio: Check for packet headroom at compile time Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 12/22] virtio: Move allocation before initialization Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 13/22] virtio: Add support for vlan filtering Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 14/22] virtio: Add suport for multiple mac addresses Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 15/22] virtio: Add ability to set MAC address Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 16/22] virtio: Free mbuf's with threshold Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 17/22] virtio: Use port IO to get PCI resource Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 18/22] virtio: Fix descriptor index issue Ouyang Changchun
2015-01-15 16:54 ` Stephen Hemminger
2015-01-16 0:55 ` Ouyang, Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 19/22] ether: Fix vlan strip/insert issue Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 20/22] example/vhost: Avoid inserting vlan twice Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 21/22] example/vhost: Add vlan-strip cmd line option Ouyang Changchun
2015-01-15 5:15 ` [dpdk-dev] [PATCH 22/22] virtio: Use soft vlan strip in mergeable Rx path Ouyang Changchun
2015-01-15 16:55 ` Stephen Hemminger
2015-01-16 0:56 ` Ouyang, Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 00/24] Single virtio implementation Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 01/24] virtio: Rearrange resource initialization Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 02/24] virtio: Use weaker barriers Ouyang Changchun
2015-01-27 7:03 ` Xie, Huawei
2015-01-27 9:58 ` Stephen Hemminger
2015-01-27 16:16 ` Xie, Huawei
2015-01-28 6:12 ` Ouyang, Changchun
2015-01-27 7:56 ` Xie, Huawei
2015-01-27 8:04 ` Ouyang, Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 03/24] virtio: Allow starting with link down Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 04/24] virtio: Add support for Link State interrupt Ouyang Changchun
2015-01-27 9:04 ` Xie, Huawei
2015-01-27 10:00 ` Stephen Hemminger
2015-01-28 3:03 ` Ouyang, Changchun
2015-01-28 15:11 ` Stephen Hemminger
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 05/24] ether: Add soft vlan encap/decap functions Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 06/24] virtio: Use software vlan stripping Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 07/24] virtio: Remove unnecessary adapter structure Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 08/24] virtio: Remove redundant vq_alignment Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 09/24] virtio: Fix how states are handled during initialization Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 10/24] virtio: Make vtpci_get_status local Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 11/24] virtio: Check for packet headroom at compile time Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 12/24] virtio: Move allocation before initialization Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 13/24] virtio: Add support for vlan filtering Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 14/24] virtio: Add suport for multiple mac addresses Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 15/24] virtio: Add ability to set MAC address Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 16/24] virtio: Free mbuf's with threshold Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 17/24] virtio: Use port IO to get PCI resource Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 18/24] virtio: Fix descriptor index issue Ouyang Changchun
2015-01-27 2:35 ` [dpdk-dev] [PATCH v2 19/24] ether: Fix vlan strip/insert issue Ouyang Changchun
2015-01-27 2:36 ` [dpdk-dev] [PATCH v2 20/24] example/vhost: Avoid inserting vlan twice Ouyang Changchun
2015-01-27 2:36 ` [dpdk-dev] [PATCH v2 21/24] example/vhost: Add vlan-strip cmd line option Ouyang Changchun
2015-01-27 2:36 ` [dpdk-dev] [PATCH v2 22/24] virtio: Use soft vlan strip in mergeable Rx path Ouyang Changchun
2015-01-27 2:36 ` [dpdk-dev] [PATCH v2 23/24] virtio: Fix zero copy break issue Ouyang Changchun
2015-01-27 2:36 ` [dpdk-dev] [PATCH v2 24/24] virtio: Remove hotspots Ouyang Changchun
2015-01-27 3:06 ` [dpdk-dev] [PATCH v2 00/24] Single virtio implementation Matthew Hall
2015-01-27 3:42 ` Wiles, Keith
2015-01-27 9:41 ` Matthew Hall
2015-01-27 10:02 ` Stephen Hemminger
2015-01-27 18:59 ` Matthew Hall
2015-01-29 7:23 ` [dpdk-dev] [PATCH v3 00/25] " Ouyang Changchun
2015-01-29 7:23 ` [dpdk-dev] [PATCH v3 01/25] virtio: Rearrange resource initialization Ouyang Changchun
2015-01-29 7:23 ` [dpdk-dev] [PATCH v3 02/25] virtio: Use weaker barriers Ouyang Changchun
2015-01-29 7:23 ` [dpdk-dev] [PATCH v3 03/25] virtio: Allow starting with link down Ouyang Changchun
2015-01-29 7:23 ` [dpdk-dev] [PATCH v3 04/25] virtio: Add support for Link State interrupt Ouyang Changchun
2015-01-29 7:23 ` [dpdk-dev] [PATCH v3 05/25] ether: Add soft vlan encap/decap functions Ouyang Changchun
2015-01-29 7:23 ` [dpdk-dev] [PATCH v3 06/25] virtio: Use software vlan stripping Ouyang Changchun
2015-01-29 7:23 ` [dpdk-dev] [PATCH v3 07/25] virtio: Remove unnecessary adapter structure Ouyang Changchun
2015-01-29 7:23 ` [dpdk-dev] [PATCH v3 08/25] virtio: Remove redundant vq_alignment Ouyang Changchun
2015-01-29 7:23 ` [dpdk-dev] [PATCH v3 09/25] virtio: Fix how states are handled during initialization Ouyang Changchun
2015-01-29 7:23 ` [dpdk-dev] [PATCH v3 10/25] virtio: Make vtpci_get_status local Ouyang Changchun
2015-01-29 7:23 ` [dpdk-dev] [PATCH v3 11/25] virtio: Check for packet headroom at compile time Ouyang Changchun
2015-01-29 7:23 ` [dpdk-dev] [PATCH v3 12/25] virtio: Move allocation before initialization Ouyang Changchun
2015-01-29 7:23 ` [dpdk-dev] [PATCH v3 13/25] virtio: Add support for vlan filtering Ouyang Changchun
2015-01-29 7:23 ` [dpdk-dev] [PATCH v3 14/25] virtio: Add suport for multiple mac addresses Ouyang Changchun
2015-01-29 7:23 ` [dpdk-dev] [PATCH v3 15/25] virtio: Add ability to set MAC address Ouyang Changchun
2015-01-29 7:24 ` [dpdk-dev] [PATCH v3 16/25] virtio: Free mbuf's with threshold Ouyang Changchun
2015-01-29 7:24 ` [dpdk-dev] [PATCH v3 17/25] virtio: Use port IO to get PCI resource Ouyang Changchun
2015-01-29 23:14 ` Thomas Monjalon
2015-02-04 1:31 ` Ouyang, Changchun
2015-01-29 7:24 ` [dpdk-dev] [PATCH v3 18/25] virtio: Fix descriptor index issue Ouyang Changchun
2015-01-29 7:24 ` [dpdk-dev] [PATCH v3 19/25] ether: Fix vlan strip/insert issue Ouyang Changchun
2015-02-04 10:54 ` Xie, Huawei
2015-02-05 0:54 ` Ouyang, Changchun
2015-01-29 7:24 ` [dpdk-dev] [PATCH v3 20/25] example/vhost: Avoid inserting vlan twice Ouyang Changchun
2015-01-29 7:24 ` [dpdk-dev] [PATCH v3 21/25] example/vhost: Add vlan-strip cmd line option Ouyang Changchun
2015-01-29 7:24 ` [dpdk-dev] [PATCH v3 22/25] virtio: Use soft vlan strip in mergeable Rx path Ouyang Changchun
2015-01-29 7:24 ` [dpdk-dev] [PATCH v3 23/25] virtio: Fix zero copy break issue Ouyang Changchun
2015-01-29 7:24 ` [dpdk-dev] [PATCH v3 24/25] virtio: Remove hotspots Ouyang Changchun
2015-01-29 7:24 ` [dpdk-dev] [PATCH v3 25/25] virtio: Fix wmb issue Ouyang Changchun
2015-02-09 1:13 ` [dpdk-dev] [PATCH v4 00/26] Single virtio implementation Ouyang Changchun
2015-02-09 1:13 ` [dpdk-dev] [PATCH v4 01/26] virtio: Rearrange resource initialization Ouyang Changchun
2015-02-09 1:13 ` [dpdk-dev] [PATCH v4 02/26] virtio: Use weaker barriers Ouyang Changchun
2015-02-09 1:13 ` [dpdk-dev] [PATCH v4 03/26] virtio: Allow starting with link down Ouyang Changchun
2015-02-09 1:13 ` [dpdk-dev] [PATCH v4 04/26] virtio: Add support for Link State interrupt Ouyang Changchun
2015-02-09 1:13 ` Ouyang Changchun [this message]
2015-02-09 1:13 ` [dpdk-dev] [PATCH v4 06/26] virtio: Use software vlan stripping Ouyang Changchun
2015-02-09 1:13 ` [dpdk-dev] [PATCH v4 07/26] virtio: Remove unnecessary adapter structure Ouyang Changchun
2015-02-09 1:13 ` [dpdk-dev] [PATCH v4 08/26] virtio: Remove redundant vq_alignment Ouyang Changchun
2015-02-09 1:13 ` [dpdk-dev] [PATCH v4 09/26] virtio: Fix how states are handled during initialization Ouyang Changchun
2015-02-09 1:13 ` [dpdk-dev] [PATCH v4 10/26] virtio: Make vtpci_get_status local Ouyang Changchun
2015-02-09 1:14 ` [dpdk-dev] [PATCH v4 11/26] virtio: Check for packet headroom at compile time Ouyang Changchun
2015-02-09 1:14 ` [dpdk-dev] [PATCH v4 12/26] virtio: Move allocation before initialization Ouyang Changchun
2015-02-09 1:14 ` [dpdk-dev] [PATCH v4 13/26] virtio: Add support for vlan filtering Ouyang Changchun
2015-02-09 1:14 ` [dpdk-dev] [PATCH v4 14/26] virtio: Add suport for multiple mac addresses Ouyang Changchun
2015-02-09 1:14 ` [dpdk-dev] [PATCH v4 15/26] virtio: Add ability to set MAC address Ouyang Changchun
2015-02-09 1:14 ` [dpdk-dev] [PATCH v4 16/26] virtio: Free mbuf's with threshold Ouyang Changchun
2015-02-09 1:14 ` [dpdk-dev] [PATCH v4 17/26] virtio: Use port IO to get PCI resource Ouyang Changchun
2015-02-11 4:32 ` Stephen Hemminger
2015-02-11 4:50 ` Ouyang, Changchun
2015-02-11 7:29 ` Vincent JARDIN
2015-02-11 13:50 ` Stephen Hemminger
2015-02-11 14:16 ` Thomas Monjalon
2015-02-12 0:52 ` Ouyang, Changchun
2015-02-09 1:14 ` [dpdk-dev] [PATCH v4 18/26] virtio: Fix descriptor index issue Ouyang Changchun
2015-02-09 1:14 ` [dpdk-dev] [PATCH v4 19/26] ether: Fix vlan strip/insert issue Ouyang Changchun
2015-02-09 1:14 ` [dpdk-dev] [PATCH v4 20/26] example/vhost: Avoid inserting vlan twice Ouyang Changchun
2015-02-09 1:14 ` [dpdk-dev] [PATCH v4 21/26] example/vhost: Add vlan-strip cmd line option Ouyang Changchun
2015-02-09 1:14 ` [dpdk-dev] [PATCH v4 22/26] virtio: Use soft vlan strip in mergeable Rx path Ouyang Changchun
2015-02-09 1:14 ` [dpdk-dev] [PATCH v4 23/26] virtio: Fix zero copy break issue Ouyang Changchun
2015-02-09 1:14 ` [dpdk-dev] [PATCH v4 24/26] virtio: Remove hotspots Ouyang Changchun
2015-02-09 1:14 ` [dpdk-dev] [PATCH v4 25/26] virtio: Fix wmb issue Ouyang Changchun
2015-02-09 1:14 ` [dpdk-dev] [PATCH v4 26/26] virtio: Fix updating vring descriptor index issue Ouyang Changchun
2015-02-17 6:04 ` [dpdk-dev] [PATCH v4 00/26] Single virtio implementation Xie, Huawei
2015-02-20 18:06 ` Thomas Monjalon
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