#include <rte_memcpy.h>
#include <rte_memzone.h>
#include <rte_launch.h>
-#include <rte_tailq.h>
#include <rte_eal.h>
#include <rte_per_lcore.h>
#include <rte_lcore.h>
#include <rte_atomic.h>
#include <rte_branch_prediction.h>
-#include <rte_ring.h>
#include <rte_memory.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#define IP_HDRLEN 0x05 /* default IP header length == five 32-bits words. */
#define IP_VHL_DEF (IP_VERSION | IP_HDRLEN)
+#define GRE_KEY_PRESENT 0x2000
+#define GRE_KEY_LEN 4
+#define GRE_SUPPORTED_FIELDS GRE_KEY_PRESENT
+
/* We cannot use rte_cpu_to_be_16() on a constant in a switch/case */
#if RTE_BYTE_ORDER == RTE_LITTLE_ENDIAN
#define _htons(x) ((uint16_t)((((x) & 0x00ffU) << 8) | (((x) & 0xff00U) >> 8)))
uint16_t outer_ethertype;
uint16_t outer_l2_len;
uint16_t outer_l3_len;
+ uint8_t outer_l4_proto;
uint16_t tso_segsz;
};
+/* simplified GRE header */
+struct simple_gre_hdr {
+ uint16_t flags;
+ uint16_t proto;
+} __attribute__((__packed__));
+
static uint16_t
get_psd_sum(void *l3_hdr, uint16_t ethertype, uint64_t ol_flags)
{
/* Parse a vxlan header */
static void
-parse_vxlan(struct udp_hdr *udp_hdr, struct testpmd_offload_info *info,
- uint64_t mbuf_olflags)
+parse_vxlan(struct udp_hdr *udp_hdr,
+ struct testpmd_offload_info *info,
+ uint32_t pkt_type)
{
struct ether_hdr *eth_hdr;
* (rfc7348) or that the rx offload flag is set (i40e only
* currently) */
if (udp_hdr->dst_port != _htons(4789) &&
- (mbuf_olflags & (PKT_RX_TUNNEL_IPV4_HDR |
- PKT_RX_TUNNEL_IPV6_HDR)) == 0)
+ RTE_ETH_IS_TUNNEL_PKT(pkt_type) == 0)
return;
info->is_tunnel = 1;
info->outer_ethertype = info->ethertype;
info->outer_l2_len = info->l2_len;
info->outer_l3_len = info->l3_len;
+ info->outer_l4_proto = info->l4_proto;
eth_hdr = (struct ether_hdr *)((char *)udp_hdr +
sizeof(struct udp_hdr) +
info->l2_len += ETHER_VXLAN_HLEN; /* add udp + vxlan */
}
+/* Parse a gre header */
+static void
+parse_gre(struct simple_gre_hdr *gre_hdr, struct testpmd_offload_info *info)
+{
+ struct ether_hdr *eth_hdr;
+ struct ipv4_hdr *ipv4_hdr;
+ struct ipv6_hdr *ipv6_hdr;
+ uint8_t gre_len = 0;
+
+ /* check which fields are supported */
+ if ((gre_hdr->flags & _htons(~GRE_SUPPORTED_FIELDS)) != 0)
+ return;
+
+ gre_len += sizeof(struct simple_gre_hdr);
+
+ if (gre_hdr->flags & _htons(GRE_KEY_PRESENT))
+ gre_len += GRE_KEY_LEN;
+
+ if (gre_hdr->proto == _htons(ETHER_TYPE_IPv4)) {
+ info->is_tunnel = 1;
+ info->outer_ethertype = info->ethertype;
+ info->outer_l2_len = info->l2_len;
+ info->outer_l3_len = info->l3_len;
+ info->outer_l4_proto = info->l4_proto;
+
+ ipv4_hdr = (struct ipv4_hdr *)((char *)gre_hdr + gre_len);
+
+ parse_ipv4(ipv4_hdr, info);
+ info->ethertype = _htons(ETHER_TYPE_IPv4);
+ info->l2_len = 0;
+
+ } else if (gre_hdr->proto == _htons(ETHER_TYPE_IPv6)) {
+ info->is_tunnel = 1;
+ info->outer_ethertype = info->ethertype;
+ info->outer_l2_len = info->l2_len;
+ info->outer_l3_len = info->l3_len;
+ info->outer_l4_proto = info->l4_proto;
+
+ ipv6_hdr = (struct ipv6_hdr *)((char *)gre_hdr + gre_len);
+
+ info->ethertype = _htons(ETHER_TYPE_IPv6);
+ parse_ipv6(ipv6_hdr, info);
+ info->l2_len = 0;
+
+ } else if (gre_hdr->proto == _htons(ETHER_TYPE_TEB)) {
+ info->is_tunnel = 1;
+ info->outer_ethertype = info->ethertype;
+ info->outer_l2_len = info->l2_len;
+ info->outer_l3_len = info->l3_len;
+ info->outer_l4_proto = info->l4_proto;
+
+ eth_hdr = (struct ether_hdr *)((char *)gre_hdr + gre_len);
+
+ parse_ethernet(eth_hdr, info);
+ } else
+ return;
+
+ info->l2_len += gre_len;
+}
+
+
+/* Parse an encapsulated ip or ipv6 header */
+static void
+parse_encap_ip(void *encap_ip, struct testpmd_offload_info *info)
+{
+ struct ipv4_hdr *ipv4_hdr = encap_ip;
+ struct ipv6_hdr *ipv6_hdr = encap_ip;
+ uint8_t ip_version;
+
+ ip_version = (ipv4_hdr->version_ihl & 0xf0) >> 4;
+
+ if (ip_version != 4 && ip_version != 6)
+ return;
+
+ info->is_tunnel = 1;
+ info->outer_ethertype = info->ethertype;
+ info->outer_l2_len = info->l2_len;
+ info->outer_l3_len = info->l3_len;
+
+ if (ip_version == 4) {
+ parse_ipv4(ipv4_hdr, info);
+ info->ethertype = _htons(ETHER_TYPE_IPv4);
+ } else {
+ parse_ipv6(ipv6_hdr, info);
+ info->ethertype = _htons(ETHER_TYPE_IPv6);
+ }
+ info->l2_len = 0;
+}
+
/* modify the IPv4 or IPv4 source address of a packet */
static void
change_ip_addresses(void *l3_hdr, uint16_t ethertype)
* packet */
static uint64_t
process_outer_cksums(void *outer_l3_hdr, struct testpmd_offload_info *info,
-uint16_t testpmd_ol_flags)
+ uint16_t testpmd_ol_flags)
{
struct ipv4_hdr *ipv4_hdr = outer_l3_hdr;
struct ipv6_hdr *ipv6_hdr = outer_l3_hdr;
} else if (testpmd_ol_flags & TESTPMD_TX_OFFLOAD_OUTER_IP_CKSUM)
ol_flags |= PKT_TX_OUTER_IPV6;
+ if (info->outer_l4_proto != IPPROTO_UDP)
+ return ol_flags;
+
/* outer UDP checksum is always done in software as we have no
* hardware supporting it today, and no API for it. */
return ol_flags;
}
+/*
+ * Helper function.
+ * Performs actual copying.
+ * Returns number of segments in the destination mbuf on success,
+ * or negative error code on failure.
+ */
+static int
+mbuf_copy_split(const struct rte_mbuf *ms, struct rte_mbuf *md[],
+ uint16_t seglen[], uint8_t nb_seg)
+{
+ uint32_t dlen, slen, tlen;
+ uint32_t i, len;
+ const struct rte_mbuf *m;
+ const uint8_t *src;
+ uint8_t *dst;
+
+ dlen = 0;
+ slen = 0;
+ tlen = 0;
+
+ dst = NULL;
+ src = NULL;
+
+ m = ms;
+ i = 0;
+ while (ms != NULL && i != nb_seg) {
+
+ if (slen == 0) {
+ slen = rte_pktmbuf_data_len(ms);
+ src = rte_pktmbuf_mtod(ms, const uint8_t *);
+ }
+
+ if (dlen == 0) {
+ dlen = RTE_MIN(seglen[i], slen);
+ md[i]->data_len = dlen;
+ md[i]->next = (i + 1 == nb_seg) ? NULL : md[i + 1];
+ dst = rte_pktmbuf_mtod(md[i], uint8_t *);
+ }
+
+ len = RTE_MIN(slen, dlen);
+ memcpy(dst, src, len);
+ tlen += len;
+ slen -= len;
+ dlen -= len;
+ src += len;
+ dst += len;
+
+ if (slen == 0)
+ ms = ms->next;
+ if (dlen == 0)
+ i++;
+ }
+
+ if (ms != NULL)
+ return -ENOBUFS;
+ else if (tlen != m->pkt_len)
+ return -EINVAL;
+
+ md[0]->nb_segs = nb_seg;
+ md[0]->pkt_len = tlen;
+ md[0]->vlan_tci = m->vlan_tci;
+ md[0]->vlan_tci_outer = m->vlan_tci_outer;
+ md[0]->ol_flags = m->ol_flags;
+ md[0]->tx_offload = m->tx_offload;
+
+ return nb_seg;
+}
+
+/*
+ * Allocate a new mbuf with up to tx_pkt_nb_segs segments.
+ * Copy packet contents and offload information into then new segmented mbuf.
+ */
+static struct rte_mbuf *
+pkt_copy_split(const struct rte_mbuf *pkt)
+{
+ int32_t n, rc;
+ uint32_t i, len, nb_seg;
+ struct rte_mempool *mp;
+ uint16_t seglen[RTE_MAX_SEGS_PER_PKT];
+ struct rte_mbuf *p, *md[RTE_MAX_SEGS_PER_PKT];
+
+ mp = current_fwd_lcore()->mbp;
+
+ if (tx_pkt_split == TX_PKT_SPLIT_RND)
+ nb_seg = random() % tx_pkt_nb_segs + 1;
+ else
+ nb_seg = tx_pkt_nb_segs;
+
+ memcpy(seglen, tx_pkt_seg_lengths, nb_seg * sizeof(seglen[0]));
+
+ /* calculate number of segments to use and their length. */
+ len = 0;
+ for (i = 0; i != nb_seg && len < pkt->pkt_len; i++) {
+ len += seglen[i];
+ md[i] = NULL;
+ }
+
+ n = pkt->pkt_len - len;
+
+ /* update size of the last segment to fit rest of the packet */
+ if (n >= 0) {
+ seglen[i - 1] += n;
+ len += n;
+ }
+
+ nb_seg = i;
+ while (i != 0) {
+ p = rte_pktmbuf_alloc(mp);
+ if (p == NULL) {
+ RTE_LOG(ERR, USER1,
+ "failed to allocate %u-th of %u mbuf "
+ "from mempool: %s\n",
+ nb_seg - i, nb_seg, mp->name);
+ break;
+ }
+
+ md[--i] = p;
+ if (rte_pktmbuf_tailroom(md[i]) < seglen[i]) {
+ RTE_LOG(ERR, USER1, "mempool %s, %u-th segment: "
+ "expected seglen: %u, "
+ "actual mbuf tailroom: %u\n",
+ mp->name, i, seglen[i],
+ rte_pktmbuf_tailroom(md[i]));
+ break;
+ }
+ }
+
+ /* all mbufs successfully allocated, do copy */
+ if (i == 0) {
+ rc = mbuf_copy_split(pkt, md, seglen, nb_seg);
+ if (rc < 0)
+ RTE_LOG(ERR, USER1,
+ "mbuf_copy_split for %p(len=%u, nb_seg=%hhu) "
+ "into %u segments failed with error code: %d\n",
+ pkt, pkt->pkt_len, pkt->nb_segs, nb_seg, rc);
+
+ /* figure out how many mbufs to free. */
+ i = RTE_MAX(rc, 0);
+ }
+
+ /* free unused mbufs */
+ for (; i != nb_seg; i++) {
+ rte_pktmbuf_free_seg(md[i]);
+ md[i] = NULL;
+ }
+
+ return md[0];
+}
+
/*
* Receive a burst of packets, and for each packet:
* - parse packet, and try to recognize a supported packet type (1)
* Ether / (vlan) / IP|IP6 / UDP|TCP|SCTP .
* Ether / (vlan) / outer IP|IP6 / outer UDP / VxLAN / Ether / IP|IP6 /
* UDP|TCP|SCTP
+ * Ether / (vlan) / outer IP|IP6 / GRE / Ether / IP|IP6 / UDP|TCP|SCTP
+ * Ether / (vlan) / outer IP|IP6 / GRE / IP|IP6 / UDP|TCP|SCTP
+ * Ether / (vlan) / outer IP|IP6 / IP|IP6 / UDP|TCP|SCTP
*
* The testpmd command line for this forward engine sets the flags
* TESTPMD_TX_OFFLOAD_* in ports[tx_port].tx_ol_flags. They control
{
struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
struct rte_port *txp;
- struct rte_mbuf *m;
+ struct rte_mbuf *m, *p;
struct ether_hdr *eth_hdr;
void *l3_hdr = NULL, *outer_l3_hdr = NULL; /* can be IPv4 or IPv6 */
uint16_t nb_rx;
uint16_t i;
uint64_t ol_flags;
uint16_t testpmd_ol_flags;
+ uint32_t retry;
uint32_t rx_bad_ip_csum;
uint32_t rx_bad_l4_csum;
struct testpmd_offload_info info;
info.tso_segsz = txp->tso_segsz;
for (i = 0; i < nb_rx; i++) {
+ if (likely(i < nb_rx - 1))
+ rte_prefetch0(rte_pktmbuf_mtod(pkts_burst[i + 1],
+ void *));
ol_flags = 0;
info.is_tunnel = 0;
* and inner headers */
eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
+ ether_addr_copy(&peer_eth_addrs[fs->peer_addr],
+ ð_hdr->d_addr);
+ ether_addr_copy(&ports[fs->tx_port].eth_addr,
+ ð_hdr->s_addr);
parse_ethernet(eth_hdr, &info);
l3_hdr = (char *)eth_hdr + info.l2_len;
- /* check if it's a supported tunnel (only vxlan for now) */
- if ((testpmd_ol_flags & TESTPMD_TX_OFFLOAD_PARSE_TUNNEL) &&
- info.l4_proto == IPPROTO_UDP) {
- struct udp_hdr *udp_hdr;
- udp_hdr = (struct udp_hdr *)((char *)l3_hdr + info.l3_len);
- parse_vxlan(udp_hdr, &info, m->ol_flags);
+ /* check if it's a supported tunnel */
+ if (testpmd_ol_flags & TESTPMD_TX_OFFLOAD_PARSE_TUNNEL) {
+ if (info.l4_proto == IPPROTO_UDP) {
+ struct udp_hdr *udp_hdr;
+ udp_hdr = (struct udp_hdr *)((char *)l3_hdr +
+ info.l3_len);
+ parse_vxlan(udp_hdr, &info, m->packet_type);
+ } else if (info.l4_proto == IPPROTO_GRE) {
+ struct simple_gre_hdr *gre_hdr;
+ gre_hdr = (struct simple_gre_hdr *)
+ ((char *)l3_hdr + info.l3_len);
+ parse_gre(gre_hdr, &info);
+ } else if (info.l4_proto == IPPROTO_IPIP) {
+ void *encap_ip_hdr;
+ encap_ip_hdr = (char *)l3_hdr + info.l3_len;
+ parse_encap_ip(encap_ip_hdr, &info);
+ }
}
/* update l3_hdr and outer_l3_hdr if a tunnel was parsed */
m->outer_l3_len = info.outer_l3_len;
m->l2_len = info.l2_len;
m->l3_len = info.l3_len;
+ m->l4_len = info.l4_len;
}
else {
/* if there is a outer UDP cksum
m->tso_segsz = info.tso_segsz;
m->ol_flags = ol_flags;
+ /* Do split & copy for the packet. */
+ if (tx_pkt_split != TX_PKT_SPLIT_OFF) {
+ p = pkt_copy_split(m);
+ if (p != NULL) {
+ rte_pktmbuf_free(m);
+ m = p;
+ pkts_burst[i] = m;
+ }
+ }
+
/* if verbose mode is enabled, dump debug info */
if (verbose_level > 0) {
struct {
const char *name;
printf("-----------------\n");
+ printf("mbuf=%p, pkt_len=%u, nb_segs=%hhu:\n",
+ m, m->pkt_len, m->nb_segs);
/* dump rx parsed packet info */
printf("rx: l2_len=%d ethertype=%x l3_len=%d "
"l4_proto=%d l4_len=%d\n",
}
}
nb_tx = rte_eth_tx_burst(fs->tx_port, fs->tx_queue, pkts_burst, nb_rx);
+ /*
+ * Retry if necessary
+ */
+ if (unlikely(nb_tx < nb_rx) && fs->retry_enabled) {
+ retry = 0;
+ while (nb_tx < nb_rx && retry++ < burst_tx_retry_num) {
+ rte_delay_us(burst_tx_delay_time);
+ nb_tx += rte_eth_tx_burst(fs->tx_port, fs->tx_queue,
+ &pkts_burst[nb_tx], nb_rx - nb_tx);
+ }
+ }
fs->tx_packets += nb_tx;
fs->rx_bad_ip_csum += rx_bad_ip_csum;
fs->rx_bad_l4_csum += rx_bad_l4_csum;
.port_fwd_end = NULL,
.packet_fwd = pkt_burst_checksum_forward,
};
-
git.droids-corp.org / dpdk.git / blobdiff