[dpdk-dev] [PATCH v5 3/3] gro: support VxLAN GRO
Jiayu Hu
jiayu.hu at intel.com
Wed Jan 10 15:03:12 CET 2018
This patch adds a framework that allows GRO on tunneled packets.
Furthermore, it leverages that framework to provide GRO support for
VxLAN-encapsulated packets. Supported VxLAN packets must have an outer
IPv4 header, and contain an inner TCP/IPv4 packet.
VxLAN GRO doesn't check if input packets have correct checksums and
doesn't update checksums for output packets. Additionally, it assumes
the packets are complete (i.e., MF==0 && frag_off==0), when IP
fragmentation is possible (i.e., DF==0).
Signed-off-by: Jiayu Hu <jiayu.hu at intel.com>
Reviewed-by: Junjie Chen <junjie.j.chen at intel.com>
Tested-by: Lei Yao <lei.a.yao at intel.com>
---
.../prog_guide/generic_receive_offload_lib.rst | 31 +-
lib/librte_gro/Makefile | 1 +
lib/librte_gro/gro_tcp4.c | 124 +-----
lib/librte_gro/gro_tcp4.h | 126 ++++++
lib/librte_gro/gro_vxlan_tcp4.c | 494 +++++++++++++++++++++
lib/librte_gro/gro_vxlan_tcp4.h | 156 +++++++
lib/librte_gro/rte_gro.c | 129 ++++--
lib/librte_gro/rte_gro.h | 5 +-
8 files changed, 916 insertions(+), 150 deletions(-)
create mode 100644 lib/librte_gro/gro_vxlan_tcp4.c
create mode 100644 lib/librte_gro/gro_vxlan_tcp4.h
diff --git a/doc/guides/prog_guide/generic_receive_offload_lib.rst b/doc/guides/prog_guide/generic_receive_offload_lib.rst
index c2d7a41..078bec0 100644
--- a/doc/guides/prog_guide/generic_receive_offload_lib.rst
+++ b/doc/guides/prog_guide/generic_receive_offload_lib.rst
@@ -57,7 +57,9 @@ assumes the packets are complete (i.e., MF==0 && frag_off==0), when IP
fragmentation is possible (i.e., DF==0). Additionally, it complies RFC
6864 to process the IPv4 ID field.
-Currently, the GRO library provides GRO supports for TCP/IPv4 packets.
+Currently, the GRO library provides GRO supports for TCP/IPv4 packets and
+VxLAN packets which contain an outer IPv4 header and an inner TCP/IPv4
+packet.
Two Sets of API
---------------
@@ -108,7 +110,8 @@ Reassembly Algorithm
The reassembly algorithm is used for reassembling packets. In the GRO
library, different GRO types can use different algorithms. In this
-section, we will introduce an algorithm, which is used by TCP/IPv4 GRO.
+section, we will introduce an algorithm, which is used by TCP/IPv4 GRO
+and VxLAN GRO.
Challenges
~~~~~~~~~~
@@ -185,6 +188,30 @@ Header fields deciding if two packets are neighbors include:
- IPv4 ID. The IPv4 ID fields of the packets, whose DF bit is 0, should
be increased by 1.
+VxLAN GRO
+---------
+
+The table structure used by VxLAN GRO, which is in charge of processing
+VxLAN packets with an outer IPv4 header and inner TCP/IPv4 packet, is
+similar with that of TCP/IPv4 GRO. Differently, the header fields used
+to define a VxLAN flow include:
+
+- outer source and destination: Ethernet and IP address, UDP port
+
+- VxLAN header (VNI and flag)
+
+- inner source and destination: Ethernet and IP address, TCP port
+
+Header fields deciding if packets are neighbors include:
+
+- outer IPv4 ID. The IPv4 ID fields of the packets, whose DF bit in the
+ outer IPv4 header is 0, should be increased by 1.
+
+- inner TCP sequence number
+
+- inner IPv4 ID. The IPv4 ID fields of the packets, whose DF bit in the
+ inner IPv4 header is 0, should be increased by 1.
+
.. note::
We comply RFC 6864 to process the IPv4 ID field. Specifically,
we check IPv4 ID fields for the packets whose DF bit is 0 and
diff --git a/lib/librte_gro/Makefile b/lib/librte_gro/Makefile
index 63df236..bec248f 100644
--- a/lib/librte_gro/Makefile
+++ b/lib/librte_gro/Makefile
@@ -17,6 +17,7 @@ LIBABIVER := 1
# source files
SRCS-$(CONFIG_RTE_LIBRTE_GRO) += rte_gro.c
SRCS-$(CONFIG_RTE_LIBRTE_GRO) += gro_tcp4.c
+SRCS-$(CONFIG_RTE_LIBRTE_GRO) += gro_vxlan_tcp4.c
# install this header file
SYMLINK-$(CONFIG_RTE_LIBRTE_GRO)-include += rte_gro.h
diff --git a/lib/librte_gro/gro_tcp4.c b/lib/librte_gro/gro_tcp4.c
index 309cdc7..2c0f35c 100644
--- a/lib/librte_gro/gro_tcp4.c
+++ b/lib/librte_gro/gro_tcp4.c
@@ -6,8 +6,6 @@
#include <rte_mbuf.h>
#include <rte_cycles.h>
#include <rte_ethdev.h>
-#include <rte_ip.h>
-#include <rte_tcp.h>
#include "gro_tcp4.h"
@@ -74,109 +72,6 @@ gro_tcp4_tbl_destroy(void *tbl)
rte_free(tcp_tbl);
}
-/*
- * merge two TCP/IPv4 packets without updating checksums.
- * If cmp is larger than 0, append the new packet to the
- * original packet. Otherwise, pre-pend the new packet to
- * the original packet.
- */
-static inline int
-merge_two_tcp4_packets(struct gro_tcp4_item *item,
- struct rte_mbuf *pkt,
- int cmp,
- uint32_t sent_seq,
- uint16_t ip_id)
-{
- struct rte_mbuf *pkt_head, *pkt_tail, *lastseg;
- uint16_t hdr_len;
-
- if (cmp > 0) {
- pkt_head = item->firstseg;
- pkt_tail = pkt;
- } else {
- pkt_head = pkt;
- pkt_tail = item->firstseg;
- }
-
- /* check if the IPv4 packet length is greater than the max value */
- hdr_len = pkt_head->l2_len + pkt_head->l3_len + pkt_head->l4_len;
- if (unlikely(pkt_head->pkt_len - pkt_head->l2_len + pkt_tail->pkt_len -
- hdr_len > MAX_IPV4_PKT_LENGTH))
- return 0;
-
- /* remove the packet header for the tail packet */
- rte_pktmbuf_adj(pkt_tail, hdr_len);
-
- /* chain two packets together */
- if (cmp > 0) {
- item->lastseg->next = pkt;
- item->lastseg = rte_pktmbuf_lastseg(pkt);
- /* update IP ID to the larger value */
- item->ip_id = ip_id;
- } else {
- lastseg = rte_pktmbuf_lastseg(pkt);
- lastseg->next = item->firstseg;
- item->firstseg = pkt;
- /* update sent_seq to the smaller value */
- item->sent_seq = sent_seq;
- }
- item->nb_merged++;
-
- /* update mbuf metadata for the merged packet */
- pkt_head->nb_segs += pkt_tail->nb_segs;
- pkt_head->pkt_len += pkt_tail->pkt_len;
-
- return 1;
-}
-
-/*
- * Check if two TCP/IPv4 packets are neighbors.
- */
-static inline int
-check_seq_option(struct gro_tcp4_item *item,
- struct tcp_hdr *tcph,
- uint32_t sent_seq,
- uint16_t ip_id,
- uint16_t tcp_hl,
- uint16_t tcp_dl,
- uint8_t is_atomic)
-{
- struct rte_mbuf *pkt_orig = item->firstseg;
- struct ipv4_hdr *iph_orig;
- struct tcp_hdr *tcph_orig;
- uint16_t len, tcp_hl_orig;
-
- iph_orig = (struct ipv4_hdr *)(rte_pktmbuf_mtod(pkt_orig, char *) +
- pkt_orig->l2_len);
- tcph_orig = (struct tcp_hdr *)((char *)iph_orig + pkt_orig->l3_len);
- tcp_hl_orig = pkt_orig->l4_len;
-
- /* Check if TCP option fields equal */
- len = RTE_MAX(tcp_hl, tcp_hl_orig) - sizeof(struct tcp_hdr);
- if ((tcp_hl != tcp_hl_orig) ||
- ((len > 0) && (memcmp(tcph + 1, tcph_orig + 1,
- len) != 0)))
- return 0;
-
- /* Don't merge packets whose DF bits are different */
- if (unlikely(item->is_atomic ^ is_atomic))
- return 0;
-
- /* check if the two packets are neighbors */
- len = pkt_orig->pkt_len - pkt_orig->l2_len - pkt_orig->l3_len -
- tcp_hl_orig;
- if ((sent_seq == item->sent_seq + len) && (is_atomic ||
- (ip_id == item->ip_id + 1)))
- /* append the new packet */
- return 1;
- else if ((sent_seq + tcp_dl == item->sent_seq) && (is_atomic ||
- (ip_id + item->nb_merged == item->ip_id)))
- /* pre-pend the new packet */
- return -1;
-
- return 0;
-}
-
static inline uint32_t
find_an_empty_item(struct gro_tcp4_tbl *tbl)
{
@@ -280,21 +175,6 @@ insert_new_flow(struct gro_tcp4_tbl *tbl,
}
/*
- * Check if two TCP/IPv4 packets belong to the same flow.
- */
-static inline int
-is_same_tcp4_flow(struct tcp4_flow_key k1, struct tcp4_flow_key k2)
-{
- return (is_same_ether_addr(&k1.eth_saddr, &k2.eth_saddr) &&
- is_same_ether_addr(&k1.eth_daddr, &k2.eth_daddr) &&
- (k1.ip_src_addr == k2.ip_src_addr) &&
- (k1.ip_dst_addr == k2.ip_dst_addr) &&
- (k1.recv_ack == k2.recv_ack) &&
- (k1.src_port == k2.src_port) &&
- (k1.dst_port == k2.dst_port));
-}
-
-/*
* update the packet length for the flushed packet.
*/
static inline void
@@ -407,11 +287,11 @@ gro_tcp4_reassemble(struct rte_mbuf *pkt,
prev_idx = cur_idx;
do {
cmp = check_seq_option(&(tbl->items[cur_idx]), tcp_hdr,
- sent_seq, ip_id, pkt->l4_len, tcp_dl,
+ sent_seq, ip_id, pkt->l4_len, tcp_dl, 0,
is_atomic);
if (cmp) {
if (merge_two_tcp4_packets(&(tbl->items[cur_idx]),
- pkt, cmp, sent_seq, ip_id))
+ pkt, cmp, sent_seq, ip_id, 0))
return 1;
/*
* Fail to merge the two packets, as the packet
diff --git a/lib/librte_gro/gro_tcp4.h b/lib/librte_gro/gro_tcp4.h
index af128c9..6bb30cd 100644
--- a/lib/librte_gro/gro_tcp4.h
+++ b/lib/librte_gro/gro_tcp4.h
@@ -5,6 +5,9 @@
#ifndef _GRO_TCP4_H_
#define _GRO_TCP4_H_
+#include <rte_ip.h>
+#include <rte_tcp.h>
+
#define INVALID_ARRAY_INDEX 0xffffffffUL
#define GRO_TCP4_TBL_MAX_ITEM_NUM (1024UL * 1024UL)
@@ -172,4 +175,127 @@ uint16_t gro_tcp4_tbl_timeout_flush(struct gro_tcp4_tbl *tbl,
* The number of packets in the table
*/
uint32_t gro_tcp4_tbl_pkt_count(void *tbl);
+
+/*
+ * Check if two TCP/IPv4 packets belong to the same flow.
+ */
+static inline int
+is_same_tcp4_flow(struct tcp4_flow_key k1, struct tcp4_flow_key k2)
+{
+ return (is_same_ether_addr(&k1.eth_saddr, &k2.eth_saddr) &&
+ is_same_ether_addr(&k1.eth_daddr, &k2.eth_daddr) &&
+ (k1.ip_src_addr == k2.ip_src_addr) &&
+ (k1.ip_dst_addr == k2.ip_dst_addr) &&
+ (k1.recv_ack == k2.recv_ack) &&
+ (k1.src_port == k2.src_port) &&
+ (k1.dst_port == k2.dst_port));
+}
+
+/*
+ * Merge two TCP/IPv4 packets without updating checksums.
+ * If cmp is larger than 0, append the new packet to the
+ * original packet. Otherwise, pre-pend the new packet to
+ * the original packet.
+ */
+static inline int
+merge_two_tcp4_packets(struct gro_tcp4_item *item,
+ struct rte_mbuf *pkt,
+ int cmp,
+ uint32_t sent_seq,
+ uint16_t ip_id,
+ uint16_t l2_offset)
+{
+ struct rte_mbuf *pkt_head, *pkt_tail, *lastseg;
+ uint16_t hdr_len, l2_len;
+
+ if (cmp > 0) {
+ pkt_head = item->firstseg;
+ pkt_tail = pkt;
+ } else {
+ pkt_head = pkt;
+ pkt_tail = item->firstseg;
+ }
+
+ /* check if the IPv4 packet length is greater than the max value */
+ hdr_len = l2_offset + pkt_head->l2_len + pkt_head->l3_len +
+ pkt_head->l4_len;
+ l2_len = l2_offset > 0 ? pkt_head->outer_l2_len : pkt_head->l2_len;
+ if (unlikely(pkt_head->pkt_len - l2_len + pkt_tail->pkt_len -
+ hdr_len > MAX_IPV4_PKT_LENGTH))
+ return 0;
+
+ /* remove the packet header for the tail packet */
+ rte_pktmbuf_adj(pkt_tail, hdr_len);
+
+ /* chain two packets together */
+ if (cmp > 0) {
+ item->lastseg->next = pkt;
+ item->lastseg = rte_pktmbuf_lastseg(pkt);
+ /* update IP ID to the larger value */
+ item->ip_id = ip_id;
+ } else {
+ lastseg = rte_pktmbuf_lastseg(pkt);
+ lastseg->next = item->firstseg;
+ item->firstseg = pkt;
+ /* update sent_seq to the smaller value */
+ item->sent_seq = sent_seq;
+ item->ip_id = ip_id;
+ }
+ item->nb_merged++;
+
+ /* update MBUF metadata for the merged packet */
+ pkt_head->nb_segs += pkt_tail->nb_segs;
+ pkt_head->pkt_len += pkt_tail->pkt_len;
+
+ return 1;
+}
+
+/*
+ * Check if two TCP/IPv4 packets are neighbors.
+ */
+static inline int
+check_seq_option(struct gro_tcp4_item *item,
+ struct tcp_hdr *tcph,
+ uint32_t sent_seq,
+ uint16_t ip_id,
+ uint16_t tcp_hl,
+ uint16_t tcp_dl,
+ uint16_t l2_offset,
+ uint8_t is_atomic)
+{
+ struct rte_mbuf *pkt_orig = item->firstseg;
+ struct ipv4_hdr *iph_orig;
+ struct tcp_hdr *tcph_orig;
+ uint16_t len, tcp_hl_orig;
+
+ iph_orig = (struct ipv4_hdr *)(rte_pktmbuf_mtod(pkt_orig, char *) +
+ l2_offset + pkt_orig->l2_len);
+ tcph_orig = (struct tcp_hdr *)((char *)iph_orig + pkt_orig->l3_len);
+ tcp_hl_orig = pkt_orig->l4_len;
+
+ /* Check if TCP option fields equal */
+ len = RTE_MAX(tcp_hl, tcp_hl_orig) - sizeof(struct tcp_hdr);
+ if ((tcp_hl != tcp_hl_orig) || ((len > 0) &&
+ (memcmp(tcph + 1, tcph_orig + 1,
+ len) != 0)))
+ return 0;
+
+ /* Don't merge packets whose DF bits are different */
+ if (unlikely(item->is_atomic ^ is_atomic))
+ return 0;
+
+ /* check if the two packets are neighbors */
+ len = pkt_orig->pkt_len - l2_offset - pkt_orig->l2_len -
+ pkt_orig->l3_len - tcp_hl_orig;
+ if ((sent_seq == item->sent_seq + len) && (is_atomic ||
+ (ip_id == item->ip_id + 1)))
+ /* append the new packet */
+ return 1;
+ else if ((sent_seq + tcp_dl == item->sent_seq) && (is_atomic ||
+ (ip_id + item->nb_merged == item->ip_id)))
+ /* pre-pend the new packet */
+ return -1;
+
+ return 0;
+}
#endif
diff --git a/lib/librte_gro/gro_vxlan_tcp4.c b/lib/librte_gro/gro_vxlan_tcp4.c
new file mode 100644
index 0000000..ca86f01
--- /dev/null
+++ b/lib/librte_gro/gro_vxlan_tcp4.c
@@ -0,0 +1,494 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Intel Corporation
+ */
+
+#include <rte_malloc.h>
+#include <rte_mbuf.h>
+#include <rte_cycles.h>
+#include <rte_ethdev.h>
+#include <rte_udp.h>
+
+#include "gro_vxlan_tcp4.h"
+
+void *
+gro_vxlan_tcp4_tbl_create(uint16_t socket_id,
+ uint16_t max_flow_num,
+ uint16_t max_item_per_flow)
+{
+ struct gro_vxlan_tcp4_tbl *tbl;
+ size_t size;
+ uint32_t entries_num, i;
+
+ entries_num = max_flow_num * max_item_per_flow;
+ entries_num = RTE_MIN(entries_num, GRO_VXLAN_TCP4_TBL_MAX_ITEM_NUM);
+
+ if (entries_num == 0)
+ return NULL;
+
+ tbl = rte_zmalloc_socket(__func__,
+ sizeof(struct gro_vxlan_tcp4_tbl),
+ RTE_CACHE_LINE_SIZE,
+ socket_id);
+ if (tbl == NULL)
+ return NULL;
+
+ size = sizeof(struct gro_vxlan_tcp4_item) * entries_num;
+ tbl->items = rte_zmalloc_socket(__func__,
+ size,
+ RTE_CACHE_LINE_SIZE,
+ socket_id);
+ if (tbl->items == NULL) {
+ rte_free(tbl);
+ return NULL;
+ }
+ tbl->max_item_num = entries_num;
+
+ size = sizeof(struct gro_vxlan_tcp4_flow) * entries_num;
+ tbl->flows = rte_zmalloc_socket(__func__,
+ size,
+ RTE_CACHE_LINE_SIZE,
+ socket_id);
+ if (tbl->flows == NULL) {
+ rte_free(tbl->items);
+ rte_free(tbl);
+ return NULL;
+ }
+
+ for (i = 0; i < entries_num; i++)
+ tbl->flows[i].start_index = INVALID_ARRAY_INDEX;
+ tbl->max_flow_num = entries_num;
+
+ return tbl;
+}
+
+void
+gro_vxlan_tcp4_tbl_destroy(void *tbl)
+{
+ struct gro_vxlan_tcp4_tbl *vxlan_tbl = tbl;
+
+ if (vxlan_tbl) {
+ rte_free(vxlan_tbl->items);
+ rte_free(vxlan_tbl->flows);
+ }
+ rte_free(vxlan_tbl);
+}
+
+static inline uint32_t
+find_an_empty_item(struct gro_vxlan_tcp4_tbl *tbl)
+{
+ uint32_t max_item_num = tbl->max_item_num, i;
+
+ for (i = 0; i < max_item_num; i++)
+ if (tbl->items[i].inner_item.firstseg == NULL)
+ return i;
+ return INVALID_ARRAY_INDEX;
+}
+
+static inline uint32_t
+find_an_empty_flow(struct gro_vxlan_tcp4_tbl *tbl)
+{
+ uint32_t max_flow_num = tbl->max_flow_num, i;
+
+ for (i = 0; i < max_flow_num; i++)
+ if (tbl->flows[i].start_index == INVALID_ARRAY_INDEX)
+ return i;
+ return INVALID_ARRAY_INDEX;
+}
+
+static inline uint32_t
+insert_new_item(struct gro_vxlan_tcp4_tbl *tbl,
+ struct rte_mbuf *pkt,
+ uint64_t start_time,
+ uint32_t prev_idx,
+ uint32_t sent_seq,
+ uint16_t outer_ip_id,
+ uint16_t ip_id,
+ uint8_t outer_is_atomic,
+ uint8_t is_atomic)
+{
+ uint32_t item_idx;
+
+ item_idx = find_an_empty_item(tbl);
+ if (unlikely(item_idx == INVALID_ARRAY_INDEX))
+ return INVALID_ARRAY_INDEX;
+
+ tbl->items[item_idx].inner_item.firstseg = pkt;
+ tbl->items[item_idx].inner_item.lastseg = rte_pktmbuf_lastseg(pkt);
+ tbl->items[item_idx].inner_item.start_time = start_time;
+ tbl->items[item_idx].inner_item.next_pkt_idx = INVALID_ARRAY_INDEX;
+ tbl->items[item_idx].inner_item.sent_seq = sent_seq;
+ tbl->items[item_idx].inner_item.ip_id = ip_id;
+ tbl->items[item_idx].inner_item.nb_merged = 1;
+ tbl->items[item_idx].inner_item.is_atomic = is_atomic;
+ tbl->items[item_idx].outer_ip_id = outer_ip_id;
+ tbl->items[item_idx].outer_is_atomic = outer_is_atomic;
+ tbl->item_num++;
+
+ /* If the previous packet exists, chain the new one with it. */
+ if (prev_idx != INVALID_ARRAY_INDEX) {
+ tbl->items[item_idx].inner_item.next_pkt_idx =
+ tbl->items[prev_idx].inner_item.next_pkt_idx;
+ tbl->items[prev_idx].inner_item.next_pkt_idx = item_idx;
+ }
+
+ return item_idx;
+}
+
+static inline uint32_t
+delete_item(struct gro_vxlan_tcp4_tbl *tbl,
+ uint32_t item_idx,
+ uint32_t prev_item_idx)
+{
+ uint32_t next_idx = tbl->items[item_idx].inner_item.next_pkt_idx;
+
+ /* NULL indicates an empty item. */
+ tbl->items[item_idx].inner_item.firstseg = NULL;
+ tbl->item_num--;
+ if (prev_item_idx != INVALID_ARRAY_INDEX)
+ tbl->items[prev_item_idx].inner_item.next_pkt_idx = next_idx;
+
+ return next_idx;
+}
+
+static inline uint32_t
+insert_new_flow(struct gro_vxlan_tcp4_tbl *tbl,
+ struct vxlan_tcp4_flow_key *src,
+ uint32_t item_idx)
+{
+ struct vxlan_tcp4_flow_key *dst;
+ uint32_t flow_idx;
+
+ flow_idx = find_an_empty_flow(tbl);
+ if (unlikely(flow_idx == INVALID_ARRAY_INDEX))
+ return INVALID_ARRAY_INDEX;
+
+ dst = &(tbl->flows[flow_idx].key);
+
+ ether_addr_copy(&(src->inner_key.eth_saddr),
+ &(dst->inner_key.eth_saddr));
+ ether_addr_copy(&(src->inner_key.eth_daddr),
+ &(dst->inner_key.eth_daddr));
+ dst->inner_key.ip_src_addr = src->inner_key.ip_src_addr;
+ dst->inner_key.ip_dst_addr = src->inner_key.ip_dst_addr;
+ dst->inner_key.recv_ack = src->inner_key.recv_ack;
+ dst->inner_key.src_port = src->inner_key.src_port;
+ dst->inner_key.dst_port = src->inner_key.dst_port;
+
+ dst->vxlan_hdr.vx_flags = src->vxlan_hdr.vx_flags;
+ dst->vxlan_hdr.vx_vni = src->vxlan_hdr.vx_vni;
+ ether_addr_copy(&(src->outer_eth_saddr), &(dst->outer_eth_saddr));
+ ether_addr_copy(&(src->outer_eth_daddr), &(dst->outer_eth_daddr));
+ dst->outer_ip_src_addr = src->outer_ip_src_addr;
+ dst->outer_ip_dst_addr = src->outer_ip_dst_addr;
+ dst->outer_src_port = src->outer_src_port;
+ dst->outer_dst_port = src->outer_dst_port;
+
+ tbl->flows[flow_idx].start_index = item_idx;
+ tbl->flow_num++;
+
+ return flow_idx;
+}
+
+static inline int
+is_same_vxlan_tcp4_flow(struct vxlan_tcp4_flow_key k1,
+ struct vxlan_tcp4_flow_key k2)
+{
+ return (is_same_ether_addr(&k1.outer_eth_saddr, &k2.outer_eth_saddr) &&
+ is_same_ether_addr(&k1.outer_eth_daddr,
+ &k2.outer_eth_daddr) &&
+ (k1.outer_ip_src_addr == k2.outer_ip_src_addr) &&
+ (k1.outer_ip_dst_addr == k2.outer_ip_dst_addr) &&
+ (k1.outer_src_port == k2.outer_src_port) &&
+ (k1.outer_dst_port == k2.outer_dst_port) &&
+ (k1.vxlan_hdr.vx_flags == k2.vxlan_hdr.vx_flags) &&
+ (k1.vxlan_hdr.vx_vni == k2.vxlan_hdr.vx_vni) &&
+ is_same_tcp4_flow(k1.inner_key, k2.inner_key));
+}
+
+static inline int
+check_vxlan_seq_option(struct gro_vxlan_tcp4_item *item,
+ struct tcp_hdr *tcp_hdr,
+ uint32_t sent_seq,
+ uint16_t outer_ip_id,
+ uint16_t ip_id,
+ uint16_t tcp_hl,
+ uint16_t tcp_dl,
+ uint8_t outer_is_atomic,
+ uint8_t is_atomic)
+{
+ struct rte_mbuf *pkt = item->inner_item.firstseg;
+ int cmp;
+ uint16_t l2_offset;
+
+ /* Don't merge packets whose outer DF bits are different. */
+ if (unlikely(item->outer_is_atomic ^ outer_is_atomic))
+ return 0;
+
+ l2_offset = pkt->outer_l2_len + pkt->outer_l3_len;
+ cmp = check_seq_option(&item->inner_item, tcp_hdr, sent_seq, ip_id,
+ tcp_hl, tcp_dl, l2_offset, is_atomic);
+ if ((cmp > 0) && (outer_is_atomic ||
+ (outer_ip_id == item->outer_ip_id + 1)))
+ /* Append the new packet. */
+ return 1;
+ else if ((cmp < 0) && (outer_is_atomic ||
+ (outer_ip_id + item->inner_item.nb_merged ==
+ item->outer_ip_id)))
+ /* Prepend the new packet. */
+ return -1;
+
+ return 0;
+}
+
+static inline int
+merge_two_vxlan_tcp4_packets(struct gro_vxlan_tcp4_item *item,
+ struct rte_mbuf *pkt,
+ int cmp,
+ uint32_t sent_seq,
+ uint16_t outer_ip_id,
+ uint16_t ip_id)
+{
+ if (merge_two_tcp4_packets(&item->inner_item, pkt, cmp, sent_seq,
+ ip_id, pkt->outer_l2_len +
+ pkt->outer_l3_len)) {
+ /* Update the outer IPv4 ID to the large value. */
+ item->outer_ip_id = cmp > 0 ? outer_ip_id : item->outer_ip_id;
+ return 1;
+ }
+
+ return 0;
+}
+
+static inline void
+update_vxlan_header(struct gro_vxlan_tcp4_item *item)
+{
+ struct ipv4_hdr *ipv4_hdr;
+ struct udp_hdr *udp_hdr;
+ struct rte_mbuf *pkt = item->inner_item.firstseg;
+ uint16_t len;
+
+ /* Update the outer IPv4 header. */
+ len = pkt->pkt_len - pkt->outer_l2_len;
+ ipv4_hdr = (struct ipv4_hdr *)(rte_pktmbuf_mtod(pkt, char *) +
+ pkt->outer_l2_len);
+ ipv4_hdr->total_length = rte_cpu_to_be_16(len);
+
+ /* Update the outer UDP header. */
+ len -= pkt->outer_l3_len;
+ udp_hdr = (struct udp_hdr *)((char *)ipv4_hdr + pkt->outer_l3_len);
+ udp_hdr->dgram_len = rte_cpu_to_be_16(len);
+
+ /* Update the inner IPv4 header. */
+ len -= pkt->l2_len;
+ ipv4_hdr = (struct ipv4_hdr *)((char *)udp_hdr + pkt->l2_len);
+ ipv4_hdr->total_length = rte_cpu_to_be_16(len);
+}
+
+int32_t
+gro_vxlan_tcp4_reassemble(struct rte_mbuf *pkt,
+ struct gro_vxlan_tcp4_tbl *tbl,
+ uint64_t start_time)
+{
+ struct ether_hdr *outer_eth_hdr, *eth_hdr;
+ struct ipv4_hdr *outer_ipv4_hdr, *ipv4_hdr;
+ struct tcp_hdr *tcp_hdr;
+ struct udp_hdr *udp_hdr;
+ struct vxlan_hdr *vxlan_hdr;
+ uint32_t sent_seq;
+ uint16_t tcp_dl, frag_off, outer_ip_id, ip_id;
+ uint8_t outer_is_atomic, is_atomic;
+
+ struct vxlan_tcp4_flow_key key;
+ uint32_t cur_idx, prev_idx, item_idx;
+ uint32_t i, max_flow_num, remaining_flow_num;
+ int cmp;
+ uint16_t hdr_len;
+ uint8_t find;
+
+ outer_eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
+ outer_ipv4_hdr = (struct ipv4_hdr *)((char *)outer_eth_hdr +
+ pkt->outer_l2_len);
+ udp_hdr = (struct udp_hdr *)((char *)outer_ipv4_hdr +
+ pkt->outer_l3_len);
+ vxlan_hdr = (struct vxlan_hdr *)((char *)udp_hdr +
+ sizeof(struct udp_hdr));
+ eth_hdr = (struct ether_hdr *)((char *)vxlan_hdr +
+ sizeof(struct vxlan_hdr));
+ ipv4_hdr = (struct ipv4_hdr *)((char *)udp_hdr + pkt->l2_len);
+ tcp_hdr = (struct tcp_hdr *)((char *)ipv4_hdr + pkt->l3_len);
+
+ /*
+ * Don't process the packet which has FIN, SYN, RST, PSH, URG,
+ * ECE or CWR set.
+ */
+ if (tcp_hdr->tcp_flags != TCP_ACK_FLAG)
+ return -1;
+
+ hdr_len = pkt->outer_l2_len + pkt->outer_l3_len + pkt->l2_len +
+ pkt->l3_len + pkt->l4_len;
+ /*
+ * Don't process the packet whose payload length is less than or
+ * equal to 0.
+ */
+ tcp_dl = pkt->pkt_len - hdr_len;
+ if (tcp_dl <= 0)
+ return -1;
+
+ /*
+ * Save IPv4 ID for the packet whose DF bit is 0. For the packet
+ * whose DF bit is 1, IPv4 ID is ignored.
+ */
+ frag_off = rte_be_to_cpu_16(outer_ipv4_hdr->fragment_offset);
+ outer_is_atomic = (frag_off & IPV4_HDR_DF_FLAG) == IPV4_HDR_DF_FLAG;
+ outer_ip_id = outer_is_atomic ? 0 :
+ rte_be_to_cpu_16(outer_ipv4_hdr->packet_id);
+ frag_off = rte_be_to_cpu_16(ipv4_hdr->fragment_offset);
+ is_atomic = (frag_off & IPV4_HDR_DF_FLAG) == IPV4_HDR_DF_FLAG;
+ ip_id = is_atomic ? 0 : rte_be_to_cpu_16(ipv4_hdr->packet_id);
+
+ sent_seq = rte_be_to_cpu_32(tcp_hdr->sent_seq);
+
+ ether_addr_copy(&(eth_hdr->s_addr), &(key.inner_key.eth_saddr));
+ ether_addr_copy(&(eth_hdr->d_addr), &(key.inner_key.eth_daddr));
+ key.inner_key.ip_src_addr = ipv4_hdr->src_addr;
+ key.inner_key.ip_dst_addr = ipv4_hdr->dst_addr;
+ key.inner_key.recv_ack = tcp_hdr->recv_ack;
+ key.inner_key.src_port = tcp_hdr->src_port;
+ key.inner_key.dst_port = tcp_hdr->dst_port;
+
+ key.vxlan_hdr.vx_flags = vxlan_hdr->vx_flags;
+ key.vxlan_hdr.vx_vni = vxlan_hdr->vx_vni;
+ ether_addr_copy(&(outer_eth_hdr->s_addr), &(key.outer_eth_saddr));
+ ether_addr_copy(&(outer_eth_hdr->d_addr), &(key.outer_eth_daddr));
+ key.outer_ip_src_addr = outer_ipv4_hdr->src_addr;
+ key.outer_ip_dst_addr = outer_ipv4_hdr->dst_addr;
+ key.outer_src_port = udp_hdr->src_port;
+ key.outer_dst_port = udp_hdr->dst_port;
+
+ /* Search for a matched flow. */
+ max_flow_num = tbl->max_flow_num;
+ remaining_flow_num = tbl->flow_num;
+ find = 0;
+ for (i = 0; i < max_flow_num && remaining_flow_num; i++) {
+ if (tbl->flows[i].start_index != INVALID_ARRAY_INDEX) {
+ if (is_same_vxlan_tcp4_flow(tbl->flows[i].key, key)) {
+ find = 1;
+ break;
+ }
+ remaining_flow_num--;
+ }
+ }
+
+ /*
+ * Can't find a matched flow. Insert a new flow and store the
+ * packet into the flow.
+ */
+ if (find == 0) {
+ item_idx = insert_new_item(tbl, pkt, start_time,
+ INVALID_ARRAY_INDEX, sent_seq, outer_ip_id,
+ ip_id, outer_is_atomic, is_atomic);
+ if (item_idx == INVALID_ARRAY_INDEX)
+ return -1;
+ if (insert_new_flow(tbl, &key, item_idx) ==
+ INVALID_ARRAY_INDEX) {
+ /*
+ * Fail to insert a new flow, so
+ * delete the inserted packet.
+ */
+ delete_item(tbl, item_idx, INVALID_ARRAY_INDEX);
+ return -1;
+ }
+ return 0;
+ }
+
+ /* Check all packets in the flow and try to find a neighbor. */
+ cur_idx = tbl->flows[i].start_index;
+ prev_idx = cur_idx;
+ do {
+ cmp = check_vxlan_seq_option(&(tbl->items[cur_idx]), tcp_hdr,
+ sent_seq, outer_ip_id, ip_id, pkt->l4_len,
+ tcp_dl, outer_is_atomic, is_atomic);
+ if (cmp) {
+ if (merge_two_vxlan_tcp4_packets(&(tbl->items[cur_idx]),
+ pkt, cmp, sent_seq,
+ outer_ip_id, ip_id))
+ return 1;
+ /*
+ * Can't merge two packets, as the packet
+ * length will be greater than the max value.
+ * Insert the packet into the flow.
+ */
+ if (insert_new_item(tbl, pkt, start_time, prev_idx,
+ sent_seq, outer_ip_id,
+ ip_id, outer_is_atomic,
+ is_atomic) ==
+ INVALID_ARRAY_INDEX)
+ return -1;
+ return 0;
+ }
+ prev_idx = cur_idx;
+ cur_idx = tbl->items[cur_idx].inner_item.next_pkt_idx;
+ } while (cur_idx != INVALID_ARRAY_INDEX);
+
+ /* Can't find neighbor. Insert the packet into the flow. */
+ if (insert_new_item(tbl, pkt, start_time, prev_idx, sent_seq,
+ outer_ip_id, ip_id, outer_is_atomic,
+ is_atomic) == INVALID_ARRAY_INDEX)
+ return -1;
+
+ return 0;
+}
+
+uint16_t
+gro_vxlan_tcp4_tbl_timeout_flush(struct gro_vxlan_tcp4_tbl *tbl,
+ uint64_t flush_timestamp,
+ struct rte_mbuf **out,
+ uint16_t nb_out)
+{
+ uint16_t k = 0;
+ uint32_t i, j;
+ uint32_t max_flow_num = tbl->max_flow_num;
+
+ for (i = 0; i < max_flow_num; i++) {
+ if (unlikely(tbl->flow_num == 0))
+ return k;
+
+ j = tbl->flows[i].start_index;
+ while (j != INVALID_ARRAY_INDEX) {
+ if (tbl->items[j].inner_item.start_time <=
+ flush_timestamp) {
+ out[k++] = tbl->items[j].inner_item.firstseg;
+ if (tbl->items[j].inner_item.nb_merged > 1)
+ update_vxlan_header(&(tbl->items[j]));
+ /*
+ * Delete the item and get the next packet
+ * index.
+ */
+ j = delete_item(tbl, j, INVALID_ARRAY_INDEX);
+ tbl->flows[i].start_index = j;
+ if (j == INVALID_ARRAY_INDEX)
+ tbl->flow_num--;
+
+ if (unlikely(k == nb_out))
+ return k;
+ } else
+ /*
+ * The left packets in the flow won't be
+ * timeout. Go to check other flows.
+ */
+ break;
+ }
+ }
+ return k;
+}
+
+uint32_t
+gro_vxlan_tcp4_tbl_pkt_count(void *tbl)
+{
+ struct gro_vxlan_tcp4_tbl *gro_tbl = tbl;
+
+ if (gro_tbl)
+ return gro_tbl->item_num;
+
+ return 0;
+}
diff --git a/lib/librte_gro/gro_vxlan_tcp4.h b/lib/librte_gro/gro_vxlan_tcp4.h
new file mode 100644
index 0000000..0cafb92
--- /dev/null
+++ b/lib/librte_gro/gro_vxlan_tcp4.h
@@ -0,0 +1,156 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2018 Intel Corporation
+ */
+
+#ifndef _GRO_VXLAN_TCP4_H_
+#define _GRO_VXLAN_TCP4_H_
+
+#include "gro_tcp4.h"
+
+#define GRO_VXLAN_TCP4_TBL_MAX_ITEM_NUM (1024UL * 1024UL)
+
+/* Header fields representing a VxLAN flow */
+struct vxlan_tcp4_flow_key {
+ struct tcp4_flow_key inner_key;
+ struct vxlan_hdr vxlan_hdr;
+
+ struct ether_addr outer_eth_saddr;
+ struct ether_addr outer_eth_daddr;
+
+ uint32_t outer_ip_src_addr;
+ uint32_t outer_ip_dst_addr;
+
+ /* Outer UDP ports */
+ uint16_t outer_src_port;
+ uint16_t outer_dst_port;
+
+};
+
+struct gro_vxlan_tcp4_flow {
+ struct vxlan_tcp4_flow_key key;
+ /*
+ * The index of the first packet in the flow. INVALID_ARRAY_INDEX
+ * indicates an empty flow.
+ */
+ uint32_t start_index;
+};
+
+struct gro_vxlan_tcp4_item {
+ struct gro_tcp4_item inner_item;
+ /* IPv4 ID in the outer IPv4 header */
+ uint16_t outer_ip_id;
+ /* Indicate if outer IPv4 ID can be ignored */
+ uint8_t outer_is_atomic;
+};
+
+/*
+ * VxLAN (with an outer IPv4 header and an inner TCP/IPv4 packet)
+ * reassembly table structure
+ */
+struct gro_vxlan_tcp4_tbl {
+ /* item array */
+ struct gro_vxlan_tcp4_item *items;
+ /* flow array */
+ struct gro_vxlan_tcp4_flow *flows;
+ /* current item number */
+ uint32_t item_num;
+ /* current flow number */
+ uint32_t flow_num;
+ /* the maximum item number */
+ uint32_t max_item_num;
+ /* the maximum flow number */
+ uint32_t max_flow_num;
+};
+
+/**
+ * This function creates a VxLAN reassembly table for VxLAN packets
+ * which have an outer IPv4 header and an inner TCP/IPv4 packet.
+ *
+ * @param socket_id
+ * Socket index for allocating the table
+ * @param max_flow_num
+ * The maximum number of flows in the table
+ * @param max_item_per_flow
+ * The maximum number of packets per flow
+ *
+ * @return
+ * - Return the table pointer on success.
+ * - Return NULL on failure.
+ */
+void *gro_vxlan_tcp4_tbl_create(uint16_t socket_id,
+ uint16_t max_flow_num,
+ uint16_t max_item_per_flow);
+
+/**
+ * This function destroys a VxLAN reassembly table.
+ *
+ * @param tbl
+ * Pointer pointing to the VxLAN reassembly table
+ */
+void gro_vxlan_tcp4_tbl_destroy(void *tbl);
+
+/**
+ * This function merges a VxLAN packet which has an outer IPv4 header and
+ * an inner TCP/IPv4 packet. It doesn't process the packet, whose TCP
+ * header has SYN, FIN, RST, PSH, CWR, ECE or URG bit set, or which
+ * doesn't have payload.
+ *
+ * This function doesn't check if the packet has correct checksums and
+ * doesn't re-calculate checksums for the merged packet. Additionally,
+ * it assumes the packets are complete (i.e., MF==0 && frag_off==0), when
+ * IP fragmentation is possible (i.e., DF==0). It returns the packet, if
+ * the packet has invalid parameters (e.g. SYN bit is set) or there is no
+ * available space in the table.
+ *
+ * @param pkt
+ * Packet to reassemble
+ * @param tbl
+ * Pointer pointing to the VxLAN reassembly table
+ * @start_time
+ * The time when the packet is inserted into the table
+ *
+ * @return
+ * - Return a positive value if the packet is merged.
+ * - Return zero if the packet isn't merged but stored in the table.
+ * - Return a negative value for invalid parameters or no available
+ * space in the table.
+ */
+int32_t gro_vxlan_tcp4_reassemble(struct rte_mbuf *pkt,
+ struct gro_vxlan_tcp4_tbl *tbl,
+ uint64_t start_time);
+
+/**
+ * This function flushes timeout packets in the VxLAN reassembly table,
+ * and without updating checksums.
+ *
+ * @param tbl
+ * Pointer pointing to a VxLAN GRO table
+ * @param flush_timestamp
+ * This function flushes packets which are inserted into the table
+ * before or at the flush_timestamp.
+ * @param out
+ * Pointer array used to keep flushed packets
+ * @param nb_out
+ * The element number in 'out'. It also determines the maximum number of
+ * packets that can be flushed finally.
+ *
+ * @return
+ * The number of flushed packets
+ */
+uint16_t gro_vxlan_tcp4_tbl_timeout_flush(struct gro_vxlan_tcp4_tbl *tbl,
+ uint64_t flush_timestamp,
+ struct rte_mbuf **out,
+ uint16_t nb_out);
+
+/**
+ * This function returns the number of the packets in a VxLAN
+ * reassembly table.
+ *
+ * @param tbl
+ * Pointer pointing to the VxLAN reassembly table
+ *
+ * @return
+ * The number of packets in the table
+ */
+uint32_t gro_vxlan_tcp4_tbl_pkt_count(void *tbl);
+#endif
diff --git a/lib/librte_gro/rte_gro.c b/lib/librte_gro/rte_gro.c
index 0b64866..6618f4d 100644
--- a/lib/librte_gro/rte_gro.c
+++ b/lib/librte_gro/rte_gro.c
@@ -9,6 +9,7 @@
#include "rte_gro.h"
#include "gro_tcp4.h"
+#include "gro_vxlan_tcp4.h"
typedef void *(*gro_tbl_create_fn)(uint16_t socket_id,
uint16_t max_flow_num,
@@ -17,15 +18,28 @@ typedef void (*gro_tbl_destroy_fn)(void *tbl);
typedef uint32_t (*gro_tbl_pkt_count_fn)(void *tbl);
static gro_tbl_create_fn tbl_create_fn[RTE_GRO_TYPE_MAX_NUM] = {
- gro_tcp4_tbl_create, NULL};
+ gro_tcp4_tbl_create, gro_vxlan_tcp4_tbl_create, NULL};
static gro_tbl_destroy_fn tbl_destroy_fn[RTE_GRO_TYPE_MAX_NUM] = {
- gro_tcp4_tbl_destroy, NULL};
+ gro_tcp4_tbl_destroy, gro_vxlan_tcp4_tbl_destroy,
+ NULL};
static gro_tbl_pkt_count_fn tbl_pkt_count_fn[RTE_GRO_TYPE_MAX_NUM] = {
- gro_tcp4_tbl_pkt_count, NULL};
+ gro_tcp4_tbl_pkt_count, gro_vxlan_tcp4_tbl_pkt_count,
+ NULL};
#define IS_IPV4_TCP_PKT(ptype) (RTE_ETH_IS_IPV4_HDR(ptype) && \
((ptype & RTE_PTYPE_L4_TCP) == RTE_PTYPE_L4_TCP))
+#define IS_IPV4_VXLAN_TCP4_PKT(ptype) (RTE_ETH_IS_IPV4_HDR(ptype) && \
+ ((ptype & RTE_PTYPE_L4_UDP) == RTE_PTYPE_L4_UDP) && \
+ ((ptype & RTE_PTYPE_TUNNEL_VXLAN) == \
+ RTE_PTYPE_TUNNEL_VXLAN) && \
+ ((ptype & RTE_PTYPE_INNER_L4_TCP) == \
+ RTE_PTYPE_INNER_L4_TCP) && \
+ (((ptype & RTE_PTYPE_INNER_L3_MASK) & \
+ (RTE_PTYPE_INNER_L3_IPV4 | \
+ RTE_PTYPE_INNER_L3_IPV4_EXT | \
+ RTE_PTYPE_INNER_L3_IPV4_EXT_UNKNOWN)) != 0))
+
/*
* GRO context structure. It keeps the table structures, which are
* used to merge packets, for different GRO types. Before using
@@ -109,12 +123,20 @@ rte_gro_reassemble_burst(struct rte_mbuf **pkts,
struct gro_tcp4_flow tcp_flows[RTE_GRO_MAX_BURST_ITEM_NUM];
struct gro_tcp4_item tcp_items[RTE_GRO_MAX_BURST_ITEM_NUM] = {{0} };
+ /* Allocate a reassembly table for VXLAN GRO */
+ struct gro_vxlan_tcp4_tbl vxlan_tbl;
+ struct gro_vxlan_tcp4_flow vxlan_flows[RTE_GRO_MAX_BURST_ITEM_NUM];
+ struct gro_vxlan_tcp4_item vxlan_items[RTE_GRO_MAX_BURST_ITEM_NUM] = {
+ {{0}, 0, 0} };
+
struct rte_mbuf *unprocess_pkts[nb_pkts];
uint32_t item_num;
int32_t ret;
uint16_t i, unprocess_num = 0, nb_after_gro = nb_pkts;
+ uint8_t do_tcp4_gro = 0, do_vxlan_gro = 0;
- if (unlikely((param->gro_types & RTE_GRO_TCP_IPV4) == 0))
+ if (unlikely((param->gro_types & (RTE_GRO_IPV4_VXLAN_TCP_IPV4 |
+ RTE_GRO_TCP_IPV4)) == 0))
return nb_pkts;
/* Get the maximum number of packets */
@@ -122,22 +144,47 @@ rte_gro_reassemble_burst(struct rte_mbuf **pkts,
param->max_item_per_flow));
item_num = RTE_MIN(item_num, RTE_GRO_MAX_BURST_ITEM_NUM);
- for (i = 0; i < item_num; i++)
- tcp_flows[i].start_index = INVALID_ARRAY_INDEX;
+ if (param->gro_types & RTE_GRO_IPV4_VXLAN_TCP_IPV4) {
+ for (i = 0; i < item_num; i++)
+ vxlan_flows[i].start_index = INVALID_ARRAY_INDEX;
+
+ vxlan_tbl.flows = vxlan_flows;
+ vxlan_tbl.items = vxlan_items;
+ vxlan_tbl.flow_num = 0;
+ vxlan_tbl.item_num = 0;
+ vxlan_tbl.max_flow_num = item_num;
+ vxlan_tbl.max_item_num = item_num;
+ do_vxlan_gro = 1;
+ }
- tcp_tbl.flows = tcp_flows;
- tcp_tbl.items = tcp_items;
- tcp_tbl.flow_num = 0;
- tcp_tbl.item_num = 0;
- tcp_tbl.max_flow_num = item_num;
- tcp_tbl.max_item_num = item_num;
+ if (param->gro_types & RTE_GRO_TCP_IPV4) {
+ for (i = 0; i < item_num; i++)
+ tcp_flows[i].start_index = INVALID_ARRAY_INDEX;
+
+ tcp_tbl.flows = tcp_flows;
+ tcp_tbl.items = tcp_items;
+ tcp_tbl.flow_num = 0;
+ tcp_tbl.item_num = 0;
+ tcp_tbl.max_flow_num = item_num;
+ tcp_tbl.max_item_num = item_num;
+ do_tcp4_gro = 1;
+ }
for (i = 0; i < nb_pkts; i++) {
- if (IS_IPV4_TCP_PKT(pkts[i]->packet_type)) {
- /*
- * The timestamp is ignored, since all packets
- * will be flushed from the tables.
- */
+ /*
+ * The timestamp is ignored, since all packets
+ * will be flushed from the tables.
+ */
+ if (IS_IPV4_VXLAN_TCP4_PKT(pkts[i]->packet_type) &&
+ do_vxlan_gro) {
+ ret = gro_vxlan_tcp4_reassemble(pkts[i], &vxlan_tbl, 0);
+ if (ret > 0)
+ /* Merge successfully */
+ nb_after_gro--;
+ else if (ret < 0)
+ unprocess_pkts[unprocess_num++] = pkts[i];
+ } else if (IS_IPV4_TCP_PKT(pkts[i]->packet_type) &&
+ do_tcp4_gro) {
ret = gro_tcp4_reassemble(pkts[i], &tcp_tbl, 0);
if (ret > 0)
/* merge successfully */
@@ -149,8 +196,16 @@ rte_gro_reassemble_burst(struct rte_mbuf **pkts,
}
if (nb_after_gro < nb_pkts) {
+ i = 0;
/* Flush all packets from the tables */
- i = gro_tcp4_tbl_timeout_flush(&tcp_tbl, 0, pkts, nb_pkts);
+ if (do_vxlan_gro) {
+ i = gro_vxlan_tcp4_tbl_timeout_flush(&vxlan_tbl,
+ 0, pkts, nb_pkts);
+ }
+ if (do_tcp4_gro) {
+ i += gro_tcp4_tbl_timeout_flush(&tcp_tbl, 0,
+ &pkts[i], nb_pkts - i);
+ }
/* Copy unprocessed packets */
if (unprocess_num > 0) {
memcpy(&pkts[i], unprocess_pkts,
@@ -169,18 +224,33 @@ rte_gro_reassemble(struct rte_mbuf **pkts,
{
struct rte_mbuf *unprocess_pkts[nb_pkts];
struct gro_ctx *gro_ctx = ctx;
- void *tcp_tbl;
+ void *tcp_tbl, *vxlan_tbl;
uint64_t current_time;
uint16_t i, unprocess_num = 0;
+ uint8_t do_tcp4_gro, do_vxlan_gro;
- if (unlikely((gro_ctx->gro_types & RTE_GRO_TCP_IPV4) == 0))
+ if (unlikely((gro_ctx->gro_types & (RTE_GRO_IPV4_VXLAN_TCP_IPV4 |
+ RTE_GRO_TCP_IPV4)) == 0))
return nb_pkts;
tcp_tbl = gro_ctx->tbls[RTE_GRO_TCP_IPV4_INDEX];
+ vxlan_tbl = gro_ctx->tbls[RTE_GRO_IPV4_VXLAN_TCP_IPV4_INDEX];
+
+ do_tcp4_gro = (gro_ctx->gro_types & RTE_GRO_TCP_IPV4) ==
+ RTE_GRO_TCP_IPV4;
+ do_vxlan_gro = (gro_ctx->gro_types & RTE_GRO_IPV4_VXLAN_TCP_IPV4) ==
+ RTE_GRO_IPV4_VXLAN_TCP_IPV4;
+
current_time = rte_rdtsc();
for (i = 0; i < nb_pkts; i++) {
- if (IS_IPV4_TCP_PKT(pkts[i]->packet_type)) {
+ if (IS_IPV4_VXLAN_TCP4_PKT(pkts[i]->packet_type) &&
+ do_vxlan_gro) {
+ if (gro_vxlan_tcp4_reassemble(pkts[i], vxlan_tbl,
+ current_time) < 0)
+ unprocess_pkts[unprocess_num++] = pkts[i];
+ } else if (IS_IPV4_TCP_PKT(pkts[i]->packet_type) &&
+ do_tcp4_gro) {
if (gro_tcp4_reassemble(pkts[i], tcp_tbl,
current_time) < 0)
unprocess_pkts[unprocess_num++] = pkts[i];
@@ -204,18 +274,27 @@ rte_gro_timeout_flush(void *ctx,
{
struct gro_ctx *gro_ctx = ctx;
uint64_t flush_timestamp;
+ uint16_t num = 0;
gro_types = gro_types & gro_ctx->gro_types;
flush_timestamp = rte_rdtsc() - timeout_cycles;
- if (gro_types & RTE_GRO_TCP_IPV4) {
- return gro_tcp4_tbl_timeout_flush(
+ if (gro_types & RTE_GRO_IPV4_VXLAN_TCP_IPV4) {
+ num = gro_vxlan_tcp4_tbl_timeout_flush(gro_ctx->tbls[
+ RTE_GRO_IPV4_VXLAN_TCP_IPV4_INDEX],
+ flush_timestamp, out, max_nb_out);
+ max_nb_out -= num;
+ }
+
+ /* If no available space in 'out', stop flushing. */
+ if ((gro_types & RTE_GRO_TCP_IPV4) && max_nb_out > 0) {
+ num += gro_tcp4_tbl_timeout_flush(
gro_ctx->tbls[RTE_GRO_TCP_IPV4_INDEX],
flush_timestamp,
- out, max_nb_out);
+ &out[num], max_nb_out);
}
- return 0;
+ return num;
}
uint64_t
diff --git a/lib/librte_gro/rte_gro.h b/lib/librte_gro/rte_gro.h
index 85d8143..8d781b5 100644
--- a/lib/librte_gro/rte_gro.h
+++ b/lib/librte_gro/rte_gro.h
@@ -23,12 +23,15 @@ extern "C" {
*/
#define RTE_GRO_TYPE_MAX_NUM 64
/**< the max number of supported GRO types */
-#define RTE_GRO_TYPE_SUPPORT_NUM 1
+#define RTE_GRO_TYPE_SUPPORT_NUM 2
/**< the number of currently supported GRO types */
#define RTE_GRO_TCP_IPV4_INDEX 0
#define RTE_GRO_TCP_IPV4 (1ULL << RTE_GRO_TCP_IPV4_INDEX)
/**< TCP/IPv4 GRO flag */
+#define RTE_GRO_IPV4_VXLAN_TCP_IPV4_INDEX 1
+#define RTE_GRO_IPV4_VXLAN_TCP_IPV4 (1ULL << RTE_GRO_IPV4_VXLAN_TCP_IPV4_INDEX)
+/**< VxLAN GRO flag. */
/**
* Structure used to create GRO context objects or used to pass
--
2.7.4
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