/* Configure how many packets ahead to prefetch, when reading packets */
#define PREFETCH_OFFSET 3
+/* Used to mark destination port as 'invalid'. */
+#define BAD_PORT ((uint16_t)-1)
+
+#define FWDSTEP 4
+
+/* replace first 12B of the ethernet header. */
+#define MASK_ETH 0x3f
+
/* Hash parameters. */
#ifdef RTE_ARCH_X86_64
/* default to 4 million hash entries (approx) */
return (uint8_t)((ret < 0) ? portid : ipv6_l3fwd_out_if[ret]);
}
-static inline __attribute__((always_inline)) void
-l3fwd_em_simple_forward(struct rte_mbuf *m, uint8_t portid,
- struct lcore_conf *qconf)
-{
- struct ether_hdr *eth_hdr;
- struct ipv4_hdr *ipv4_hdr;
- uint8_t dst_port;
-
- eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
-
- if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
- /* Handle IPv4 headers.*/
- ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
- sizeof(struct ether_hdr));
-
-#ifdef DO_RFC_1812_CHECKS
- /* Check to make sure the packet is valid (RFC1812) */
- if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) {
- rte_pktmbuf_free(m);
- return;
- }
-#endif
- dst_port = em_get_ipv4_dst_port(ipv4_hdr, portid,
- qconf->ipv4_lookup_struct);
-
- if (dst_port >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port) == 0)
- dst_port = portid;
-
-#ifdef DO_RFC_1812_CHECKS
- /* Update time to live and header checksum */
- --(ipv4_hdr->time_to_live);
- ++(ipv4_hdr->hdr_checksum);
-#endif
- /* dst addr */
- *(uint64_t *)ð_hdr->d_addr = dest_eth_addr[dst_port];
-
- /* src addr */
- ether_addr_copy(&ports_eth_addr[dst_port], ð_hdr->s_addr);
-
- send_single_packet(qconf, m, dst_port);
- } else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
- /* Handle IPv6 headers.*/
- struct ipv6_hdr *ipv6_hdr;
-
- ipv6_hdr = rte_pktmbuf_mtod_offset(m, struct ipv6_hdr *,
- sizeof(struct ether_hdr));
-
- dst_port = em_get_ipv6_dst_port(ipv6_hdr, portid,
- qconf->ipv6_lookup_struct);
-
- if (dst_port >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port) == 0)
- dst_port = portid;
-
- /* dst addr */
- *(uint64_t *)ð_hdr->d_addr = dest_eth_addr[dst_port];
-
- /* src addr */
- ether_addr_copy(&ports_eth_addr[dst_port], ð_hdr->s_addr);
-
- send_single_packet(qconf, m, dst_port);
- } else {
- /* Free the mbuf that contains non-IPV4/IPV6 packet */
- rte_pktmbuf_free(m);
- }
-}
-
/*
* Include header file if SSE4_1 is enabled for
* buffer optimization i.e. ENABLE_MULTI_BUFFER_OPTIMIZE=1.
*/
#if defined(__SSE4_1__)
+#ifndef HASH_MULTI_LOOKUP
#include "l3fwd_em_sse.h"
#else
+#include "l3fwd_em_hlm_sse.h"
+#endif
+#else
#include "l3fwd_em.h"
#endif
printf("Hash: Adding 0x%x keys\n", nr_flow);
}
+/* main processing loop */
int
em_main_loop(__attribute__((unused)) void *dummy)
{
diff_tsc = cur_tsc - prev_tsc;
if (unlikely(diff_tsc > drain_tsc)) {
- /*
- * This could be optimized (use queueid instead of
- * portid), but it is not called so often
- */
- for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
+ for (i = 0; i < qconf->n_rx_queue; i++) {
+ portid = qconf->rx_queue_list[i].port_id;
if (qconf->tx_mbufs[portid].len == 0)
continue;
send_burst(qconf,
#ifndef __L3FWD_EM_H__
#define __L3FWD_EM_H__
+static inline __attribute__((always_inline)) void
+l3fwd_em_simple_forward(struct rte_mbuf *m, uint8_t portid,
+ struct lcore_conf *qconf)
+{
+ struct ether_hdr *eth_hdr;
+ struct ipv4_hdr *ipv4_hdr;
+ uint8_t dst_port;
+
+ eth_hdr = rte_pktmbuf_mtod(m, struct ether_hdr *);
+
+ if (RTE_ETH_IS_IPV4_HDR(m->packet_type)) {
+ /* Handle IPv4 headers.*/
+ ipv4_hdr = rte_pktmbuf_mtod_offset(m, struct ipv4_hdr *,
+ sizeof(struct ether_hdr));
+
+#ifdef DO_RFC_1812_CHECKS
+ /* Check to make sure the packet is valid (RFC1812) */
+ if (is_valid_ipv4_pkt(ipv4_hdr, m->pkt_len) < 0) {
+ rte_pktmbuf_free(m);
+ return;
+ }
+#endif
+ dst_port = em_get_ipv4_dst_port(ipv4_hdr, portid,
+ qconf->ipv4_lookup_struct);
+
+ if (dst_port >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port) == 0)
+ dst_port = portid;
+
+#ifdef DO_RFC_1812_CHECKS
+ /* Update time to live and header checksum */
+ --(ipv4_hdr->time_to_live);
+ ++(ipv4_hdr->hdr_checksum);
+#endif
+ /* dst addr */
+ *(uint64_t *)ð_hdr->d_addr = dest_eth_addr[dst_port];
+
+ /* src addr */
+ ether_addr_copy(&ports_eth_addr[dst_port], ð_hdr->s_addr);
+
+ send_single_packet(qconf, m, dst_port);
+ } else if (RTE_ETH_IS_IPV6_HDR(m->packet_type)) {
+ /* Handle IPv6 headers.*/
+ struct ipv6_hdr *ipv6_hdr;
+
+ ipv6_hdr = rte_pktmbuf_mtod_offset(m, struct ipv6_hdr *,
+ sizeof(struct ether_hdr));
+
+ dst_port = em_get_ipv6_dst_port(ipv6_hdr, portid,
+ qconf->ipv6_lookup_struct);
+
+ if (dst_port >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port) == 0)
+ dst_port = portid;
+
+ /* dst addr */
+ *(uint64_t *)ð_hdr->d_addr = dest_eth_addr[dst_port];
+
+ /* src addr */
+ ether_addr_copy(&ports_eth_addr[dst_port], ð_hdr->s_addr);
+
+ send_single_packet(qconf, m, dst_port);
+ } else {
+ /* Free the mbuf that contains non-IPV4/IPV6 packet */
+ rte_pktmbuf_free(m);
+ }
+}
+
/*
* Buffer non-optimized handling of packets, invoked
* from main_loop.
--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2016 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __L3FWD_EM_HLM_SSE_H__
+#define __L3FWD_EM_HLM_SSE_H__
+
+/**
+ * @file
+ * This is an optional implementation of packet classification in Exact-Match
+ * path using rte_hash_lookup_multi method from previous implementation.
+ * While sequential classification seems to be faster, it's disabled by default
+ * and can be enabled with HASH_LOOKUP_MULTI global define in compilation time.
+ */
+
+#include "l3fwd_sse.h"
+
+static inline void
+em_get_dst_port_ipv4x8(struct lcore_conf *qconf, struct rte_mbuf *m[8],
+ uint8_t portid, uint16_t dst_port[8])
+{
+ int32_t ret[8];
+ union ipv4_5tuple_host key[8];
+ __m128i data[8];
+
+ data[0] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[0], __m128i *,
+ sizeof(struct ether_hdr) +
+ offsetof(struct ipv4_hdr, time_to_live)));
+ data[1] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[1], __m128i *,
+ sizeof(struct ether_hdr) +
+ offsetof(struct ipv4_hdr, time_to_live)));
+ data[2] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[2], __m128i *,
+ sizeof(struct ether_hdr) +
+ offsetof(struct ipv4_hdr, time_to_live)));
+ data[3] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[3], __m128i *,
+ sizeof(struct ether_hdr) +
+ offsetof(struct ipv4_hdr, time_to_live)));
+ data[4] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[4], __m128i *,
+ sizeof(struct ether_hdr) +
+ offsetof(struct ipv4_hdr, time_to_live)));
+ data[5] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[5], __m128i *,
+ sizeof(struct ether_hdr) +
+ offsetof(struct ipv4_hdr, time_to_live)));
+ data[6] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[6], __m128i *,
+ sizeof(struct ether_hdr) +
+ offsetof(struct ipv4_hdr, time_to_live)));
+ data[7] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[7], __m128i *,
+ sizeof(struct ether_hdr) +
+ offsetof(struct ipv4_hdr, time_to_live)));
+
+ key[0].xmm = _mm_and_si128(data[0], mask0);
+ key[1].xmm = _mm_and_si128(data[1], mask0);
+ key[2].xmm = _mm_and_si128(data[2], mask0);
+ key[3].xmm = _mm_and_si128(data[3], mask0);
+ key[4].xmm = _mm_and_si128(data[4], mask0);
+ key[5].xmm = _mm_and_si128(data[5], mask0);
+ key[6].xmm = _mm_and_si128(data[6], mask0);
+ key[7].xmm = _mm_and_si128(data[7], mask0);
+
+ const void *key_array[8] = {&key[0], &key[1], &key[2], &key[3],
+ &key[4], &key[5], &key[6], &key[7]};
+
+ rte_hash_lookup_multi(qconf->ipv4_lookup_struct, &key_array[0], 8, ret);
+
+ dst_port[0] = (uint8_t) ((ret[0] < 0) ?
+ portid : ipv4_l3fwd_out_if[ret[0]]);
+ dst_port[1] = (uint8_t) ((ret[1] < 0) ?
+ portid : ipv4_l3fwd_out_if[ret[1]]);
+ dst_port[2] = (uint8_t) ((ret[2] < 0) ?
+ portid : ipv4_l3fwd_out_if[ret[2]]);
+ dst_port[3] = (uint8_t) ((ret[3] < 0) ?
+ portid : ipv4_l3fwd_out_if[ret[3]]);
+ dst_port[4] = (uint8_t) ((ret[4] < 0) ?
+ portid : ipv4_l3fwd_out_if[ret[4]]);
+ dst_port[5] = (uint8_t) ((ret[5] < 0) ?
+ portid : ipv4_l3fwd_out_if[ret[5]]);
+ dst_port[6] = (uint8_t) ((ret[6] < 0) ?
+ portid : ipv4_l3fwd_out_if[ret[6]]);
+ dst_port[7] = (uint8_t) ((ret[7] < 0) ?
+ portid : ipv4_l3fwd_out_if[ret[7]]);
+
+ if (dst_port[0] >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port[0]) == 0)
+ dst_port[0] = portid;
+
+ if (dst_port[1] >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port[1]) == 0)
+ dst_port[1] = portid;
+
+ if (dst_port[2] >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port[2]) == 0)
+ dst_port[2] = portid;
+
+ if (dst_port[3] >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port[3]) == 0)
+ dst_port[3] = portid;
+
+ if (dst_port[4] >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port[4]) == 0)
+ dst_port[4] = portid;
+
+ if (dst_port[5] >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port[5]) == 0)
+ dst_port[5] = portid;
+
+ if (dst_port[6] >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port[6]) == 0)
+ dst_port[6] = portid;
+
+ if (dst_port[7] >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port[7]) == 0)
+ dst_port[7] = portid;
+
+}
+
+static inline void
+get_ipv6_5tuple(struct rte_mbuf *m0, __m128i mask0,
+ __m128i mask1, union ipv6_5tuple_host *key)
+{
+ __m128i tmpdata0 = _mm_loadu_si128(
+ rte_pktmbuf_mtod_offset(m0, __m128i *,
+ sizeof(struct ether_hdr) +
+ offsetof(struct ipv6_hdr, payload_len)));
+
+ __m128i tmpdata1 = _mm_loadu_si128(
+ rte_pktmbuf_mtod_offset(m0, __m128i *,
+ sizeof(struct ether_hdr) +
+ offsetof(struct ipv6_hdr, payload_len) +
+ sizeof(__m128i)));
+
+ __m128i tmpdata2 = _mm_loadu_si128(
+ rte_pktmbuf_mtod_offset(m0, __m128i *,
+ sizeof(struct ether_hdr) +
+ offsetof(struct ipv6_hdr, payload_len) +
+ sizeof(__m128i) + sizeof(__m128i)));
+
+ key->xmm[0] = _mm_and_si128(tmpdata0, mask0);
+ key->xmm[1] = tmpdata1;
+ key->xmm[2] = _mm_and_si128(tmpdata2, mask1);
+}
+
+static inline void
+em_get_dst_port_ipv6x8(struct lcore_conf *qconf, struct rte_mbuf *m[8],
+ uint8_t portid, uint16_t dst_port[8])
+{
+ int32_t ret[8];
+ union ipv6_5tuple_host key[8];
+
+ get_ipv6_5tuple(m[0], mask1, mask2, &key[0]);
+ get_ipv6_5tuple(m[1], mask1, mask2, &key[1]);
+ get_ipv6_5tuple(m[2], mask1, mask2, &key[2]);
+ get_ipv6_5tuple(m[3], mask1, mask2, &key[3]);
+ get_ipv6_5tuple(m[4], mask1, mask2, &key[4]);
+ get_ipv6_5tuple(m[5], mask1, mask2, &key[5]);
+ get_ipv6_5tuple(m[6], mask1, mask2, &key[6]);
+ get_ipv6_5tuple(m[7], mask1, mask2, &key[7]);
+
+ const void *key_array[8] = {&key[0], &key[1], &key[2], &key[3],
+ &key[4], &key[5], &key[6], &key[7]};
+
+ rte_hash_lookup_multi(qconf->ipv6_lookup_struct, &key_array[0], 8, ret);
+
+ dst_port[0] = (uint8_t) ((ret[0] < 0) ?
+ portid : ipv6_l3fwd_out_if[ret[0]]);
+ dst_port[1] = (uint8_t) ((ret[1] < 0) ?
+ portid : ipv6_l3fwd_out_if[ret[1]]);
+ dst_port[2] = (uint8_t) ((ret[2] < 0) ?
+ portid : ipv6_l3fwd_out_if[ret[2]]);
+ dst_port[3] = (uint8_t) ((ret[3] < 0) ?
+ portid : ipv6_l3fwd_out_if[ret[3]]);
+ dst_port[4] = (uint8_t) ((ret[4] < 0) ?
+ portid : ipv6_l3fwd_out_if[ret[4]]);
+ dst_port[5] = (uint8_t) ((ret[5] < 0) ?
+ portid : ipv6_l3fwd_out_if[ret[5]]);
+ dst_port[6] = (uint8_t) ((ret[6] < 0) ?
+ portid : ipv6_l3fwd_out_if[ret[6]]);
+ dst_port[7] = (uint8_t) ((ret[7] < 0) ?
+ portid : ipv6_l3fwd_out_if[ret[7]]);
+
+ if (dst_port[0] >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port[0]) == 0)
+ dst_port[0] = portid;
+
+ if (dst_port[1] >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port[1]) == 0)
+ dst_port[1] = portid;
+
+ if (dst_port[2] >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port[2]) == 0)
+ dst_port[2] = portid;
+
+ if (dst_port[3] >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port[3]) == 0)
+ dst_port[3] = portid;
+
+ if (dst_port[4] >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port[4]) == 0)
+ dst_port[4] = portid;
+
+ if (dst_port[5] >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port[5]) == 0)
+ dst_port[5] = portid;
+
+ if (dst_port[6] >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port[6]) == 0)
+ dst_port[6] = portid;
+
+ if (dst_port[7] >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << dst_port[7]) == 0)
+ dst_port[7] = portid;
+
+}
+
+static inline __attribute__((always_inline)) uint16_t
+em_get_dst_port(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
+ uint8_t portid)
+{
+ uint8_t next_hop;
+ struct ipv4_hdr *ipv4_hdr;
+ struct ipv6_hdr *ipv6_hdr;
+
+ if (RTE_ETH_IS_IPV4_HDR(pkt->packet_type)) {
+
+ /* Handle IPv4 headers.*/
+ ipv4_hdr = rte_pktmbuf_mtod_offset(pkt, struct ipv4_hdr *,
+ sizeof(struct ether_hdr));
+
+ next_hop = em_get_ipv4_dst_port(ipv4_hdr, portid,
+ qconf->ipv4_lookup_struct);
+
+ if (next_hop >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << next_hop) == 0)
+ next_hop = portid;
+
+ return next_hop;
+
+ } else if (RTE_ETH_IS_IPV6_HDR(pkt->packet_type)) {
+
+ /* Handle IPv6 headers.*/
+ ipv6_hdr = rte_pktmbuf_mtod_offset(pkt, struct ipv6_hdr *,
+ sizeof(struct ether_hdr));
+
+ next_hop = em_get_ipv6_dst_port(ipv6_hdr, portid,
+ qconf->ipv6_lookup_struct);
+
+ if (next_hop >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << next_hop) == 0)
+ next_hop = portid;
+
+ return next_hop;
+
+ }
+
+ return portid;
+}
+
+/*
+ * Buffer optimized handling of packets, invoked
+ * from main_loop.
+ */
+static inline void
+l3fwd_em_send_packets(int nb_rx, struct rte_mbuf **pkts_burst,
+ uint8_t portid, struct lcore_conf *qconf)
+{
+ int32_t j;
+ uint16_t dst_port[MAX_PKT_BURST];
+
+ /*
+ * Send nb_rx - nb_rx%8 packets
+ * in groups of 8.
+ */
+ int32_t n = RTE_ALIGN_FLOOR(nb_rx, 8);
+
+ for (j = 0; j < n; j += 8) {
+
+ uint32_t pkt_type =
+ pkts_burst[j]->packet_type &
+ pkts_burst[j+1]->packet_type &
+ pkts_burst[j+2]->packet_type &
+ pkts_burst[j+3]->packet_type &
+ pkts_burst[j+4]->packet_type &
+ pkts_burst[j+5]->packet_type &
+ pkts_burst[j+6]->packet_type &
+ pkts_burst[j+7]->packet_type;
+
+ if (pkt_type & RTE_PTYPE_L3_IPV4) {
+
+ em_get_dst_port_ipv4x8(qconf, &pkts_burst[j], portid, &dst_port[j]);
+
+ } else if (pkt_type & RTE_PTYPE_L3_IPV6) {
+
+ em_get_dst_port_ipv6x8(qconf, &pkts_burst[j], portid, &dst_port[j]);
+
+ } else {
+ dst_port[j] = em_get_dst_port(qconf, pkts_burst[j], portid);
+ dst_port[j+1] = em_get_dst_port(qconf, pkts_burst[j], portid);
+ dst_port[j+2] = em_get_dst_port(qconf, pkts_burst[j], portid);
+ dst_port[j+3] = em_get_dst_port(qconf, pkts_burst[j], portid);
+ dst_port[j+4] = em_get_dst_port(qconf, pkts_burst[j], portid);
+ dst_port[j+5] = em_get_dst_port(qconf, pkts_burst[j], portid);
+ dst_port[j+6] = em_get_dst_port(qconf, pkts_burst[j], portid);
+ dst_port[j+7] = em_get_dst_port(qconf, pkts_burst[j], portid);
+ }
+ }
+
+ for (; j < n; j++)
+ dst_port[j] = em_get_dst_port(qconf, pkts_burst[j], portid);
+
+ send_packets_multi(qconf, pkts_burst, dst_port, nb_rx);
+
+}
+#endif /* __L3FWD_EM_SSE_HLM_H__ */
#ifndef __L3FWD_EM_SSE_H__
#define __L3FWD_EM_SSE_H__
-#define MASK_ALL_PKTS 0xff
-#define EXCLUDE_1ST_PKT 0xfe
-#define EXCLUDE_2ND_PKT 0xfd
-#define EXCLUDE_3RD_PKT 0xfb
-#define EXCLUDE_4TH_PKT 0xf7
-#define EXCLUDE_5TH_PKT 0xef
-#define EXCLUDE_6TH_PKT 0xdf
-#define EXCLUDE_7TH_PKT 0xbf
-#define EXCLUDE_8TH_PKT 0x7f
+#include "l3fwd_sse.h"
-static inline void
-simple_ipv4_fwd_8pkts(struct rte_mbuf *m[8], uint8_t portid,
- struct lcore_conf *qconf)
+static inline __attribute__((always_inline)) uint16_t
+em_get_dst_port(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
+ uint8_t portid)
{
- struct ether_hdr *eth_hdr[8];
- struct ipv4_hdr *ipv4_hdr[8];
- uint8_t dst_port[8];
- int32_t ret[8];
- union ipv4_5tuple_host key[8];
- __m128i data[8];
-
- eth_hdr[0] = rte_pktmbuf_mtod(m[0], struct ether_hdr *);
- eth_hdr[1] = rte_pktmbuf_mtod(m[1], struct ether_hdr *);
- eth_hdr[2] = rte_pktmbuf_mtod(m[2], struct ether_hdr *);
- eth_hdr[3] = rte_pktmbuf_mtod(m[3], struct ether_hdr *);
- eth_hdr[4] = rte_pktmbuf_mtod(m[4], struct ether_hdr *);
- eth_hdr[5] = rte_pktmbuf_mtod(m[5], struct ether_hdr *);
- eth_hdr[6] = rte_pktmbuf_mtod(m[6], struct ether_hdr *);
- eth_hdr[7] = rte_pktmbuf_mtod(m[7], struct ether_hdr *);
-
- /* Handle IPv4 headers.*/
- ipv4_hdr[0] = rte_pktmbuf_mtod_offset(m[0], struct ipv4_hdr *,
- sizeof(struct ether_hdr));
- ipv4_hdr[1] = rte_pktmbuf_mtod_offset(m[1], struct ipv4_hdr *,
- sizeof(struct ether_hdr));
- ipv4_hdr[2] = rte_pktmbuf_mtod_offset(m[2], struct ipv4_hdr *,
- sizeof(struct ether_hdr));
- ipv4_hdr[3] = rte_pktmbuf_mtod_offset(m[3], struct ipv4_hdr *,
- sizeof(struct ether_hdr));
- ipv4_hdr[4] = rte_pktmbuf_mtod_offset(m[4], struct ipv4_hdr *,
- sizeof(struct ether_hdr));
- ipv4_hdr[5] = rte_pktmbuf_mtod_offset(m[5], struct ipv4_hdr *,
- sizeof(struct ether_hdr));
- ipv4_hdr[6] = rte_pktmbuf_mtod_offset(m[6], struct ipv4_hdr *,
- sizeof(struct ether_hdr));
- ipv4_hdr[7] = rte_pktmbuf_mtod_offset(m[7], struct ipv4_hdr *,
- sizeof(struct ether_hdr));
-
-#ifdef DO_RFC_1812_CHECKS
- /* Check to make sure the packet is valid (RFC1812) */
- uint8_t valid_mask = MASK_ALL_PKTS;
-
- if (is_valid_ipv4_pkt(ipv4_hdr[0], m[0]->pkt_len) < 0) {
- rte_pktmbuf_free(m[0]);
- valid_mask &= EXCLUDE_1ST_PKT;
- }
- if (is_valid_ipv4_pkt(ipv4_hdr[1], m[1]->pkt_len) < 0) {
- rte_pktmbuf_free(m[1]);
- valid_mask &= EXCLUDE_2ND_PKT;
- }
- if (is_valid_ipv4_pkt(ipv4_hdr[2], m[2]->pkt_len) < 0) {
- rte_pktmbuf_free(m[2]);
- valid_mask &= EXCLUDE_3RD_PKT;
- }
- if (is_valid_ipv4_pkt(ipv4_hdr[3], m[3]->pkt_len) < 0) {
- rte_pktmbuf_free(m[3]);
- valid_mask &= EXCLUDE_4TH_PKT;
- }
- if (is_valid_ipv4_pkt(ipv4_hdr[4], m[4]->pkt_len) < 0) {
- rte_pktmbuf_free(m[4]);
- valid_mask &= EXCLUDE_5TH_PKT;
- }
- if (is_valid_ipv4_pkt(ipv4_hdr[5], m[5]->pkt_len) < 0) {
- rte_pktmbuf_free(m[5]);
- valid_mask &= EXCLUDE_6TH_PKT;
- }
- if (is_valid_ipv4_pkt(ipv4_hdr[6], m[6]->pkt_len) < 0) {
- rte_pktmbuf_free(m[6]);
- valid_mask &= EXCLUDE_7TH_PKT;
- }
- if (is_valid_ipv4_pkt(ipv4_hdr[7], m[7]->pkt_len) < 0) {
- rte_pktmbuf_free(m[7]);
- valid_mask &= EXCLUDE_8TH_PKT;
- }
- if (unlikely(valid_mask != MASK_ALL_PKTS)) {
- if (valid_mask == 0) {
- return;
- } else {
- uint8_t i = 0;
+ uint8_t next_hop;
+ struct ipv4_hdr *ipv4_hdr;
+ struct ipv6_hdr *ipv6_hdr;
- for (i = 0; i < 8; i++) {
- if ((0x1 << i) & valid_mask) {
- l3fwd_em_simple_forward(m[i],
- portid, qconf);
- }
- }
- return;
- }
- }
-#endif /* End of #ifdef DO_RFC_1812_CHECKS */
-
- data[0] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[0], __m128i *,
- sizeof(struct ether_hdr) +
- offsetof(struct ipv4_hdr, time_to_live)));
- data[1] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[1], __m128i *,
- sizeof(struct ether_hdr) +
- offsetof(struct ipv4_hdr, time_to_live)));
- data[2] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[2], __m128i *,
- sizeof(struct ether_hdr) +
- offsetof(struct ipv4_hdr, time_to_live)));
- data[3] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[3], __m128i *,
- sizeof(struct ether_hdr) +
- offsetof(struct ipv4_hdr, time_to_live)));
- data[4] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[4], __m128i *,
- sizeof(struct ether_hdr) +
- offsetof(struct ipv4_hdr, time_to_live)));
- data[5] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[5], __m128i *,
- sizeof(struct ether_hdr) +
- offsetof(struct ipv4_hdr, time_to_live)));
- data[6] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[6], __m128i *,
- sizeof(struct ether_hdr) +
- offsetof(struct ipv4_hdr, time_to_live)));
- data[7] = _mm_loadu_si128(rte_pktmbuf_mtod_offset(m[7], __m128i *,
- sizeof(struct ether_hdr) +
- offsetof(struct ipv4_hdr, time_to_live)));
-
- key[0].xmm = _mm_and_si128(data[0], mask0);
- key[1].xmm = _mm_and_si128(data[1], mask0);
- key[2].xmm = _mm_and_si128(data[2], mask0);
- key[3].xmm = _mm_and_si128(data[3], mask0);
- key[4].xmm = _mm_and_si128(data[4], mask0);
- key[5].xmm = _mm_and_si128(data[5], mask0);
- key[6].xmm = _mm_and_si128(data[6], mask0);
- key[7].xmm = _mm_and_si128(data[7], mask0);
-
- const void *key_array[8] = {&key[0], &key[1], &key[2], &key[3],
- &key[4], &key[5], &key[6], &key[7]};
-
- rte_hash_lookup_multi(qconf->ipv4_lookup_struct, &key_array[0], 8, ret);
- dst_port[0] = (uint8_t) ((ret[0] < 0) ?
- portid : ipv4_l3fwd_out_if[ret[0]]);
- dst_port[1] = (uint8_t) ((ret[1] < 0) ?
- portid : ipv4_l3fwd_out_if[ret[1]]);
- dst_port[2] = (uint8_t) ((ret[2] < 0) ?
- portid : ipv4_l3fwd_out_if[ret[2]]);
- dst_port[3] = (uint8_t) ((ret[3] < 0) ?
- portid : ipv4_l3fwd_out_if[ret[3]]);
- dst_port[4] = (uint8_t) ((ret[4] < 0) ?
- portid : ipv4_l3fwd_out_if[ret[4]]);
- dst_port[5] = (uint8_t) ((ret[5] < 0) ?
- portid : ipv4_l3fwd_out_if[ret[5]]);
- dst_port[6] = (uint8_t) ((ret[6] < 0) ?
- portid : ipv4_l3fwd_out_if[ret[6]]);
- dst_port[7] = (uint8_t) ((ret[7] < 0) ?
- portid : ipv4_l3fwd_out_if[ret[7]]);
-
- if (dst_port[0] >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port[0]) == 0)
- dst_port[0] = portid;
-
- if (dst_port[1] >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port[1]) == 0)
- dst_port[1] = portid;
+ if (RTE_ETH_IS_IPV4_HDR(pkt->packet_type)) {
- if (dst_port[2] >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port[2]) == 0)
- dst_port[2] = portid;
+ /* Handle IPv4 headers.*/
+ ipv4_hdr = rte_pktmbuf_mtod_offset(pkt, struct ipv4_hdr *,
+ sizeof(struct ether_hdr));
- if (dst_port[3] >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port[3]) == 0)
- dst_port[3] = portid;
+ next_hop = em_get_ipv4_dst_port(ipv4_hdr, portid,
+ qconf->ipv4_lookup_struct);
- if (dst_port[4] >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port[4]) == 0)
- dst_port[4] = portid;
+ if (next_hop >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << next_hop) == 0)
+ next_hop = portid;
- if (dst_port[5] >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port[5]) == 0)
- dst_port[5] = portid;
+ return next_hop;
- if (dst_port[6] >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port[6]) == 0)
- dst_port[6] = portid;
+ } else if (RTE_ETH_IS_IPV6_HDR(pkt->packet_type)) {
- if (dst_port[7] >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port[7]) == 0)
- dst_port[7] = portid;
+ /* Handle IPv6 headers.*/
+ ipv6_hdr = rte_pktmbuf_mtod_offset(pkt, struct ipv6_hdr *,
+ sizeof(struct ether_hdr));
-#ifdef DO_RFC_1812_CHECKS
- /* Update time to live and header checksum */
- --(ipv4_hdr[0]->time_to_live);
- --(ipv4_hdr[1]->time_to_live);
- --(ipv4_hdr[2]->time_to_live);
- --(ipv4_hdr[3]->time_to_live);
- ++(ipv4_hdr[0]->hdr_checksum);
- ++(ipv4_hdr[1]->hdr_checksum);
- ++(ipv4_hdr[2]->hdr_checksum);
- ++(ipv4_hdr[3]->hdr_checksum);
- --(ipv4_hdr[4]->time_to_live);
- --(ipv4_hdr[5]->time_to_live);
- --(ipv4_hdr[6]->time_to_live);
- --(ipv4_hdr[7]->time_to_live);
- ++(ipv4_hdr[4]->hdr_checksum);
- ++(ipv4_hdr[5]->hdr_checksum);
- ++(ipv4_hdr[6]->hdr_checksum);
- ++(ipv4_hdr[7]->hdr_checksum);
-#endif
+ next_hop = em_get_ipv6_dst_port(ipv6_hdr, portid,
+ qconf->ipv6_lookup_struct);
- /* dst addr */
- *(uint64_t *)ð_hdr[0]->d_addr = dest_eth_addr[dst_port[0]];
- *(uint64_t *)ð_hdr[1]->d_addr = dest_eth_addr[dst_port[1]];
- *(uint64_t *)ð_hdr[2]->d_addr = dest_eth_addr[dst_port[2]];
- *(uint64_t *)ð_hdr[3]->d_addr = dest_eth_addr[dst_port[3]];
- *(uint64_t *)ð_hdr[4]->d_addr = dest_eth_addr[dst_port[4]];
- *(uint64_t *)ð_hdr[5]->d_addr = dest_eth_addr[dst_port[5]];
- *(uint64_t *)ð_hdr[6]->d_addr = dest_eth_addr[dst_port[6]];
- *(uint64_t *)ð_hdr[7]->d_addr = dest_eth_addr[dst_port[7]];
-
- /* src addr */
- ether_addr_copy(&ports_eth_addr[dst_port[0]], ð_hdr[0]->s_addr);
- ether_addr_copy(&ports_eth_addr[dst_port[1]], ð_hdr[1]->s_addr);
- ether_addr_copy(&ports_eth_addr[dst_port[2]], ð_hdr[2]->s_addr);
- ether_addr_copy(&ports_eth_addr[dst_port[3]], ð_hdr[3]->s_addr);
- ether_addr_copy(&ports_eth_addr[dst_port[4]], ð_hdr[4]->s_addr);
- ether_addr_copy(&ports_eth_addr[dst_port[5]], ð_hdr[5]->s_addr);
- ether_addr_copy(&ports_eth_addr[dst_port[6]], ð_hdr[6]->s_addr);
- ether_addr_copy(&ports_eth_addr[dst_port[7]], ð_hdr[7]->s_addr);
-
- send_single_packet(qconf, m[0], (uint8_t)dst_port[0]);
- send_single_packet(qconf, m[1], (uint8_t)dst_port[1]);
- send_single_packet(qconf, m[2], (uint8_t)dst_port[2]);
- send_single_packet(qconf, m[3], (uint8_t)dst_port[3]);
- send_single_packet(qconf, m[4], (uint8_t)dst_port[4]);
- send_single_packet(qconf, m[5], (uint8_t)dst_port[5]);
- send_single_packet(qconf, m[6], (uint8_t)dst_port[6]);
- send_single_packet(qconf, m[7], (uint8_t)dst_port[7]);
-}
-
-static inline void
-get_ipv6_5tuple(struct rte_mbuf *m0, __m128i mask0,
- __m128i mask1, union ipv6_5tuple_host *key)
-{
- __m128i tmpdata0 = _mm_loadu_si128(
- rte_pktmbuf_mtod_offset(m0, __m128i *,
- sizeof(struct ether_hdr) +
- offsetof(struct ipv6_hdr, payload_len)));
+ if (next_hop >= RTE_MAX_ETHPORTS ||
+ (enabled_port_mask & 1 << next_hop) == 0)
+ next_hop = portid;
- __m128i tmpdata1 = _mm_loadu_si128(
- rte_pktmbuf_mtod_offset(m0, __m128i *,
- sizeof(struct ether_hdr) +
- offsetof(struct ipv6_hdr, payload_len) +
- sizeof(__m128i)));
+ return next_hop;
- __m128i tmpdata2 = _mm_loadu_si128(
- rte_pktmbuf_mtod_offset(m0, __m128i *,
- sizeof(struct ether_hdr) +
- offsetof(struct ipv6_hdr, payload_len) +
- sizeof(__m128i) + sizeof(__m128i)));
-
- key->xmm[0] = _mm_and_si128(tmpdata0, mask0);
- key->xmm[1] = tmpdata1;
- key->xmm[2] = _mm_and_si128(tmpdata2, mask1);
-}
-
-static inline void
-simple_ipv6_fwd_8pkts(struct rte_mbuf *m[8], uint8_t portid,
- struct lcore_conf *qconf)
-{
- struct ether_hdr *eth_hdr[8];
- __attribute__((unused)) struct ipv6_hdr *ipv6_hdr[8];
- uint8_t dst_port[8];
- int32_t ret[8];
- union ipv6_5tuple_host key[8];
-
- eth_hdr[0] = rte_pktmbuf_mtod(m[0], struct ether_hdr *);
- eth_hdr[1] = rte_pktmbuf_mtod(m[1], struct ether_hdr *);
- eth_hdr[2] = rte_pktmbuf_mtod(m[2], struct ether_hdr *);
- eth_hdr[3] = rte_pktmbuf_mtod(m[3], struct ether_hdr *);
- eth_hdr[4] = rte_pktmbuf_mtod(m[4], struct ether_hdr *);
- eth_hdr[5] = rte_pktmbuf_mtod(m[5], struct ether_hdr *);
- eth_hdr[6] = rte_pktmbuf_mtod(m[6], struct ether_hdr *);
- eth_hdr[7] = rte_pktmbuf_mtod(m[7], struct ether_hdr *);
-
- /* Handle IPv6 headers.*/
- ipv6_hdr[0] = rte_pktmbuf_mtod_offset(m[0], struct ipv6_hdr *,
- sizeof(struct ether_hdr));
- ipv6_hdr[1] = rte_pktmbuf_mtod_offset(m[1], struct ipv6_hdr *,
- sizeof(struct ether_hdr));
- ipv6_hdr[2] = rte_pktmbuf_mtod_offset(m[2], struct ipv6_hdr *,
- sizeof(struct ether_hdr));
- ipv6_hdr[3] = rte_pktmbuf_mtod_offset(m[3], struct ipv6_hdr *,
- sizeof(struct ether_hdr));
- ipv6_hdr[4] = rte_pktmbuf_mtod_offset(m[4], struct ipv6_hdr *,
- sizeof(struct ether_hdr));
- ipv6_hdr[5] = rte_pktmbuf_mtod_offset(m[5], struct ipv6_hdr *,
- sizeof(struct ether_hdr));
- ipv6_hdr[6] = rte_pktmbuf_mtod_offset(m[6], struct ipv6_hdr *,
- sizeof(struct ether_hdr));
- ipv6_hdr[7] = rte_pktmbuf_mtod_offset(m[7], struct ipv6_hdr *,
- sizeof(struct ether_hdr));
-
- get_ipv6_5tuple(m[0], mask1, mask2, &key[0]);
- get_ipv6_5tuple(m[1], mask1, mask2, &key[1]);
- get_ipv6_5tuple(m[2], mask1, mask2, &key[2]);
- get_ipv6_5tuple(m[3], mask1, mask2, &key[3]);
- get_ipv6_5tuple(m[4], mask1, mask2, &key[4]);
- get_ipv6_5tuple(m[5], mask1, mask2, &key[5]);
- get_ipv6_5tuple(m[6], mask1, mask2, &key[6]);
- get_ipv6_5tuple(m[7], mask1, mask2, &key[7]);
-
- const void *key_array[8] = {&key[0], &key[1], &key[2], &key[3],
- &key[4], &key[5], &key[6], &key[7]};
-
- rte_hash_lookup_multi(qconf->ipv6_lookup_struct, &key_array[0], 8, ret);
- dst_port[0] = (uint8_t) ((ret[0] < 0) ?
- portid : ipv6_l3fwd_out_if[ret[0]]);
- dst_port[1] = (uint8_t) ((ret[1] < 0) ?
- portid : ipv6_l3fwd_out_if[ret[1]]);
- dst_port[2] = (uint8_t) ((ret[2] < 0) ?
- portid : ipv6_l3fwd_out_if[ret[2]]);
- dst_port[3] = (uint8_t) ((ret[3] < 0) ?
- portid : ipv6_l3fwd_out_if[ret[3]]);
- dst_port[4] = (uint8_t) ((ret[4] < 0) ?
- portid : ipv6_l3fwd_out_if[ret[4]]);
- dst_port[5] = (uint8_t) ((ret[5] < 0) ?
- portid : ipv6_l3fwd_out_if[ret[5]]);
- dst_port[6] = (uint8_t) ((ret[6] < 0) ?
- portid : ipv6_l3fwd_out_if[ret[6]]);
- dst_port[7] = (uint8_t) ((ret[7] < 0) ?
- portid : ipv6_l3fwd_out_if[ret[7]]);
-
- if (dst_port[0] >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port[0]) == 0)
- dst_port[0] = portid;
-
- if (dst_port[1] >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port[1]) == 0)
- dst_port[1] = portid;
-
- if (dst_port[2] >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port[2]) == 0)
- dst_port[2] = portid;
-
- if (dst_port[3] >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port[3]) == 0)
- dst_port[3] = portid;
-
- if (dst_port[4] >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port[4]) == 0)
- dst_port[4] = portid;
-
- if (dst_port[5] >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port[5]) == 0)
- dst_port[5] = portid;
-
- if (dst_port[6] >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port[6]) == 0)
- dst_port[6] = portid;
-
- if (dst_port[7] >= RTE_MAX_ETHPORTS ||
- (enabled_port_mask & 1 << dst_port[7]) == 0)
- dst_port[7] = portid;
-
- /* dst addr */
- *(uint64_t *)ð_hdr[0]->d_addr = dest_eth_addr[dst_port[0]];
- *(uint64_t *)ð_hdr[1]->d_addr = dest_eth_addr[dst_port[1]];
- *(uint64_t *)ð_hdr[2]->d_addr = dest_eth_addr[dst_port[2]];
- *(uint64_t *)ð_hdr[3]->d_addr = dest_eth_addr[dst_port[3]];
- *(uint64_t *)ð_hdr[4]->d_addr = dest_eth_addr[dst_port[4]];
- *(uint64_t *)ð_hdr[5]->d_addr = dest_eth_addr[dst_port[5]];
- *(uint64_t *)ð_hdr[6]->d_addr = dest_eth_addr[dst_port[6]];
- *(uint64_t *)ð_hdr[7]->d_addr = dest_eth_addr[dst_port[7]];
-
- /* src addr */
- ether_addr_copy(&ports_eth_addr[dst_port[0]], ð_hdr[0]->s_addr);
- ether_addr_copy(&ports_eth_addr[dst_port[1]], ð_hdr[1]->s_addr);
- ether_addr_copy(&ports_eth_addr[dst_port[2]], ð_hdr[2]->s_addr);
- ether_addr_copy(&ports_eth_addr[dst_port[3]], ð_hdr[3]->s_addr);
- ether_addr_copy(&ports_eth_addr[dst_port[4]], ð_hdr[4]->s_addr);
- ether_addr_copy(&ports_eth_addr[dst_port[5]], ð_hdr[5]->s_addr);
- ether_addr_copy(&ports_eth_addr[dst_port[6]], ð_hdr[6]->s_addr);
- ether_addr_copy(&ports_eth_addr[dst_port[7]], ð_hdr[7]->s_addr);
+ }
- send_single_packet(qconf, m[0], (uint8_t)dst_port[0]);
- send_single_packet(qconf, m[1], (uint8_t)dst_port[1]);
- send_single_packet(qconf, m[2], (uint8_t)dst_port[2]);
- send_single_packet(qconf, m[3], (uint8_t)dst_port[3]);
- send_single_packet(qconf, m[4], (uint8_t)dst_port[4]);
- send_single_packet(qconf, m[5], (uint8_t)dst_port[5]);
- send_single_packet(qconf, m[6], (uint8_t)dst_port[6]);
- send_single_packet(qconf, m[7], (uint8_t)dst_port[7]);
+ return portid;
}
/*
uint8_t portid, struct lcore_conf *qconf)
{
int32_t j;
+ uint16_t dst_port[MAX_PKT_BURST];
- /*
- * Send nb_rx - nb_rx%8 packets
- * in groups of 8.
- */
- int32_t n = RTE_ALIGN_FLOOR(nb_rx, 8);
-
- for (j = 0; j < n; j += 8) {
+ for (j = 0; j < nb_rx; j++)
+ dst_port[j] = em_get_dst_port(qconf, pkts_burst[j], portid);
- uint32_t pkt_type =
- pkts_burst[j]->packet_type &
- pkts_burst[j+1]->packet_type &
- pkts_burst[j+2]->packet_type &
- pkts_burst[j+3]->packet_type &
- pkts_burst[j+4]->packet_type &
- pkts_burst[j+5]->packet_type &
- pkts_burst[j+6]->packet_type &
- pkts_burst[j+7]->packet_type;
-
- if (pkt_type & RTE_PTYPE_L3_IPV4) {
- simple_ipv4_fwd_8pkts(
- &pkts_burst[j], portid, qconf);
- } else if (pkt_type & RTE_PTYPE_L3_IPV6) {
- simple_ipv6_fwd_8pkts(&pkts_burst[j],
- portid, qconf);
- } else {
- l3fwd_em_simple_forward(pkts_burst[j], portid, qconf);
- l3fwd_em_simple_forward(pkts_burst[j+1], portid, qconf);
- l3fwd_em_simple_forward(pkts_burst[j+2], portid, qconf);
- l3fwd_em_simple_forward(pkts_burst[j+3], portid, qconf);
- l3fwd_em_simple_forward(pkts_burst[j+4], portid, qconf);
- l3fwd_em_simple_forward(pkts_burst[j+5], portid, qconf);
- l3fwd_em_simple_forward(pkts_burst[j+6], portid, qconf);
- l3fwd_em_simple_forward(pkts_burst[j+7], portid, qconf);
- }
- }
- for (; j < nb_rx ; j++)
- l3fwd_em_simple_forward(pkts_burst[j], portid, qconf);
+ send_packets_multi(qconf, pkts_burst, dst_port, nb_rx);
}
-
#endif /* __L3FWD_EM_SSE_H__ */
#define IPV6_L3FWD_LPM_MAX_RULES 1024
#define IPV6_L3FWD_LPM_NUMBER_TBL8S (1 << 16)
-/* Used to mark destination port as 'invalid'. */
-#define BAD_PORT ((uint16_t)-1)
-
-#define FWDSTEP 4
-
-/* replace first 12B of the ethernet header. */
-#define MASK_ETH 0x3f
-
struct rte_lpm *ipv4_l3fwd_lpm_lookup_struct[NB_SOCKETS];
struct rte_lpm6 *ipv6_l3fwd_lpm_lookup_struct[NB_SOCKETS];
diff_tsc = cur_tsc - prev_tsc;
if (unlikely(diff_tsc > drain_tsc)) {
- /*
- * This could be optimized (use queueid instead of
- * portid), but it is not called so often
- */
- for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
+ for (i = 0; i < qconf->n_rx_queue; i++) {
+ portid = qconf->rx_queue_list[i].port_id;
if (qconf->tx_mbufs[portid].len == 0)
continue;
send_burst(qconf,
#ifndef __L3FWD_LPM_SSE_H__
#define __L3FWD_LPM_SSE_H__
-static inline __attribute__((always_inline)) void
-send_packetsx4(struct lcore_conf *qconf, uint8_t port,
- struct rte_mbuf *m[], uint32_t num)
+#include "l3fwd_sse.h"
+
+static inline __attribute__((always_inline)) uint16_t
+lpm_get_dst_port(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
+ uint8_t portid)
{
- uint32_t len, j, n;
-
- len = qconf->tx_mbufs[port].len;
-
- /*
- * If TX buffer for that queue is empty, and we have enough packets,
- * then send them straightway.
- */
- if (num >= MAX_TX_BURST && len == 0) {
- n = rte_eth_tx_burst(port, qconf->tx_queue_id[port], m, num);
- if (unlikely(n < num)) {
- do {
- rte_pktmbuf_free(m[n]);
- } while (++n < num);
- }
- return;
- }
+ uint8_t next_hop;
+ struct ipv6_hdr *ipv6_hdr;
+ struct ipv4_hdr *ipv4_hdr;
+ struct ether_hdr *eth_hdr;
- /*
- * Put packets into TX buffer for that queue.
- */
+ if (RTE_ETH_IS_IPV4_HDR(pkt->packet_type)) {
- n = len + num;
- n = (n > MAX_PKT_BURST) ? MAX_PKT_BURST - len : num;
+ eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
+ ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
- j = 0;
- switch (n % FWDSTEP) {
- while (j < n) {
- case 0:
- qconf->tx_mbufs[port].m_table[len + j] = m[j];
- j++;
- case 3:
- qconf->tx_mbufs[port].m_table[len + j] = m[j];
- j++;
- case 2:
- qconf->tx_mbufs[port].m_table[len + j] = m[j];
- j++;
- case 1:
- qconf->tx_mbufs[port].m_table[len + j] = m[j];
- j++;
- }
- }
+ return (uint16_t) ((rte_lpm_lookup(qconf->ipv4_lookup_struct,
+ rte_be_to_cpu_32(ipv4_hdr->dst_addr), &next_hop) == 0) ?
+ next_hop : portid);
- len += n;
-
- /* enough pkts to be sent */
- if (unlikely(len == MAX_PKT_BURST)) {
-
- send_burst(qconf, MAX_PKT_BURST, port);
-
- /* copy rest of the packets into the TX buffer. */
- len = num - n;
- j = 0;
- switch (len % FWDSTEP) {
- while (j < len) {
- case 0:
- qconf->tx_mbufs[port].m_table[j] = m[n + j];
- j++;
- case 3:
- qconf->tx_mbufs[port].m_table[j] = m[n + j];
- j++;
- case 2:
- qconf->tx_mbufs[port].m_table[j] = m[n + j];
- j++;
- case 1:
- qconf->tx_mbufs[port].m_table[j] = m[n + j];
- j++;
- }
- }
- }
+ } else if (RTE_ETH_IS_IPV6_HDR(pkt->packet_type)) {
- qconf->tx_mbufs[port].len = len;
-}
+ eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
+ ipv6_hdr = (struct ipv6_hdr *)(eth_hdr + 1);
-#ifdef DO_RFC_1812_CHECKS
+ return (uint16_t) ((rte_lpm6_lookup(qconf->ipv6_lookup_struct,
+ ipv6_hdr->dst_addr, &next_hop) == 0) ? next_hop : portid);
-#define IPV4_MIN_VER_IHL 0x45
-#define IPV4_MAX_VER_IHL 0x4f
-#define IPV4_MAX_VER_IHL_DIFF (IPV4_MAX_VER_IHL - IPV4_MIN_VER_IHL)
+ }
-/* Minimum value of IPV4 total length (20B) in network byte order. */
-#define IPV4_MIN_LEN_BE (sizeof(struct ipv4_hdr) << 8)
+ return portid;
+}
/*
- * From http://www.rfc-editor.org/rfc/rfc1812.txt section 5.2.2:
- * - The IP version number must be 4.
- * - The IP header length field must be large enough to hold the
- * minimum length legal IP datagram (20 bytes = 5 words).
- * - The IP total length field must be large enough to hold the IP
- * datagram header, whose length is specified in the IP header length
- * field.
- * If we encounter invalid IPV4 packet, then set destination port for it
- * to BAD_PORT value.
+ * lpm_get_dst_port optimized routine for packets where dst_ipv4 is already
+ * precalculated. If packet is ipv6 dst_addr is taken directly from packet
+ * header and dst_ipv4 value is not used.
*/
-static inline __attribute__((always_inline)) void
-rfc1812_process(struct ipv4_hdr *ipv4_hdr, uint16_t *dp, uint32_t ptype)
-{
- uint8_t ihl;
-
- if (RTE_ETH_IS_IPV4_HDR(ptype)) {
- ihl = ipv4_hdr->version_ihl - IPV4_MIN_VER_IHL;
-
- ipv4_hdr->time_to_live--;
- ipv4_hdr->hdr_checksum++;
-
- if (ihl > IPV4_MAX_VER_IHL_DIFF ||
- ((uint8_t)ipv4_hdr->total_length == 0 &&
- ipv4_hdr->total_length < IPV4_MIN_LEN_BE)) {
- dp[0] = BAD_PORT;
- }
- }
-}
-
-#else
-#define rfc1812_process(mb, dp) do { } while (0)
-#endif /* DO_RFC_1812_CHECKS */
-
static inline __attribute__((always_inline)) uint16_t
-get_dst_port(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
+lpm_get_dst_port_with_ipv4(const struct lcore_conf *qconf, struct rte_mbuf *pkt,
uint32_t dst_ipv4, uint8_t portid)
{
uint8_t next_hop;
struct ether_hdr *eth_hdr;
if (RTE_ETH_IS_IPV4_HDR(pkt->packet_type)) {
- if (rte_lpm_lookup(qconf->ipv4_lookup_struct, dst_ipv4,
- &next_hop) != 0)
- next_hop = portid;
+ return (uint16_t) ((rte_lpm_lookup(qconf->ipv4_lookup_struct, dst_ipv4,
+ &next_hop) == 0) ? next_hop : portid);
+
} else if (RTE_ETH_IS_IPV6_HDR(pkt->packet_type)) {
+
eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
ipv6_hdr = (struct ipv6_hdr *)(eth_hdr + 1);
- if (rte_lpm6_lookup(qconf->ipv6_lookup_struct,
- ipv6_hdr->dst_addr, &next_hop) != 0)
- next_hop = portid;
- } else {
- next_hop = portid;
- }
-
- return next_hop;
-}
-
-static inline void
-process_packet(struct lcore_conf *qconf, struct rte_mbuf *pkt,
- uint16_t *dst_port, uint8_t portid)
-{
- struct ether_hdr *eth_hdr;
- struct ipv4_hdr *ipv4_hdr;
- uint32_t dst_ipv4;
- uint16_t dp;
- __m128i te, ve;
-
- eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
- ipv4_hdr = (struct ipv4_hdr *)(eth_hdr + 1);
- dst_ipv4 = ipv4_hdr->dst_addr;
- dst_ipv4 = rte_be_to_cpu_32(dst_ipv4);
- dp = get_dst_port(qconf, pkt, dst_ipv4, portid);
+ return (uint16_t) ((rte_lpm6_lookup(qconf->ipv6_lookup_struct,
+ ipv6_hdr->dst_addr, &next_hop) == 0) ? next_hop : portid);
- te = _mm_loadu_si128((__m128i *)eth_hdr);
- ve = val_eth[dp];
+ }
- dst_port[0] = dp;
- rfc1812_process(ipv4_hdr, dst_port, pkt->packet_type);
+ return portid;
- te = _mm_blend_epi16(te, ve, MASK_ETH);
- _mm_storeu_si128((__m128i *)eth_hdr, te);
}
/*
rte_lpm_lookupx4(qconf->ipv4_lookup_struct, dip, dprt, portid);
} else {
dst.x = dip;
- dprt[0] = get_dst_port(qconf, pkt[0], dst.u32[0], portid);
- dprt[1] = get_dst_port(qconf, pkt[1], dst.u32[1], portid);
- dprt[2] = get_dst_port(qconf, pkt[2], dst.u32[2], portid);
- dprt[3] = get_dst_port(qconf, pkt[3], dst.u32[3], portid);
+ dprt[0] = lpm_get_dst_port_with_ipv4(qconf, pkt[0], dst.u32[0], portid);
+ dprt[1] = lpm_get_dst_port_with_ipv4(qconf, pkt[1], dst.u32[1], portid);
+ dprt[2] = lpm_get_dst_port_with_ipv4(qconf, pkt[2], dst.u32[2], portid);
+ dprt[3] = lpm_get_dst_port_with_ipv4(qconf, pkt[3], dst.u32[3], portid);
}
}
-/*
- * Update source and destination MAC addresses in the ethernet header.
- * Perform RFC1812 checks and updates for IPV4 packets.
- */
-static inline void
-processx4_step3(struct rte_mbuf *pkt[FWDSTEP], uint16_t dst_port[FWDSTEP])
-{
- __m128i te[FWDSTEP];
- __m128i ve[FWDSTEP];
- __m128i *p[FWDSTEP];
-
- p[0] = rte_pktmbuf_mtod(pkt[0], __m128i *);
- p[1] = rte_pktmbuf_mtod(pkt[1], __m128i *);
- p[2] = rte_pktmbuf_mtod(pkt[2], __m128i *);
- p[3] = rte_pktmbuf_mtod(pkt[3], __m128i *);
-
- ve[0] = val_eth[dst_port[0]];
- te[0] = _mm_loadu_si128(p[0]);
-
- ve[1] = val_eth[dst_port[1]];
- te[1] = _mm_loadu_si128(p[1]);
-
- ve[2] = val_eth[dst_port[2]];
- te[2] = _mm_loadu_si128(p[2]);
-
- ve[3] = val_eth[dst_port[3]];
- te[3] = _mm_loadu_si128(p[3]);
-
- /* Update first 12 bytes, keep rest bytes intact. */
- te[0] = _mm_blend_epi16(te[0], ve[0], MASK_ETH);
- te[1] = _mm_blend_epi16(te[1], ve[1], MASK_ETH);
- te[2] = _mm_blend_epi16(te[2], ve[2], MASK_ETH);
- te[3] = _mm_blend_epi16(te[3], ve[3], MASK_ETH);
-
- _mm_storeu_si128(p[0], te[0]);
- _mm_storeu_si128(p[1], te[1]);
- _mm_storeu_si128(p[2], te[2]);
- _mm_storeu_si128(p[3], te[3]);
-
- rfc1812_process((struct ipv4_hdr *)((struct ether_hdr *)p[0] + 1),
- &dst_port[0], pkt[0]->packet_type);
- rfc1812_process((struct ipv4_hdr *)((struct ether_hdr *)p[1] + 1),
- &dst_port[1], pkt[1]->packet_type);
- rfc1812_process((struct ipv4_hdr *)((struct ether_hdr *)p[2] + 1),
- &dst_port[2], pkt[2]->packet_type);
- rfc1812_process((struct ipv4_hdr *)((struct ether_hdr *)p[3] + 1),
- &dst_port[3], pkt[3]->packet_type);
-}
-
-/*
- * We group consecutive packets with the same destionation port into one burst.
- * To avoid extra latency this is done together with some other packet
- * processing, but after we made a final decision about packet's destination.
- * To do this we maintain:
- * pnum - array of number of consecutive packets with the same dest port for
- * each packet in the input burst.
- * lp - pointer to the last updated element in the pnum.
- * dlp - dest port value lp corresponds to.
- */
-
-#define GRPSZ (1 << FWDSTEP)
-#define GRPMSK (GRPSZ - 1)
-
-#define GROUP_PORT_STEP(dlp, dcp, lp, pn, idx) do { \
- if (likely((dlp) == (dcp)[(idx)])) { \
- (lp)[0]++; \
- } else { \
- (dlp) = (dcp)[idx]; \
- (lp) = (pn) + (idx); \
- (lp)[0] = 1; \
- } \
-} while (0)
-
-/*
- * Group consecutive packets with the same destination port in bursts of 4.
- * Suppose we have array of destionation ports:
- * dst_port[] = {a, b, c, d,, e, ... }
- * dp1 should contain: <a, b, c, d>, dp2: <b, c, d, e>.
- * We doing 4 comparisions at once and the result is 4 bit mask.
- * This mask is used as an index into prebuild array of pnum values.
- */
-static inline uint16_t *
-port_groupx4(uint16_t pn[FWDSTEP + 1], uint16_t *lp, __m128i dp1, __m128i dp2)
-{
- static const struct {
- uint64_t pnum; /* prebuild 4 values for pnum[]. */
- int32_t idx; /* index for new last updated elemnet. */
- uint16_t lpv; /* add value to the last updated element. */
- } gptbl[GRPSZ] = {
- {
- /* 0: a != b, b != c, c != d, d != e */
- .pnum = UINT64_C(0x0001000100010001),
- .idx = 4,
- .lpv = 0,
- },
- {
- /* 1: a == b, b != c, c != d, d != e */
- .pnum = UINT64_C(0x0001000100010002),
- .idx = 4,
- .lpv = 1,
- },
- {
- /* 2: a != b, b == c, c != d, d != e */
- .pnum = UINT64_C(0x0001000100020001),
- .idx = 4,
- .lpv = 0,
- },
- {
- /* 3: a == b, b == c, c != d, d != e */
- .pnum = UINT64_C(0x0001000100020003),
- .idx = 4,
- .lpv = 2,
- },
- {
- /* 4: a != b, b != c, c == d, d != e */
- .pnum = UINT64_C(0x0001000200010001),
- .idx = 4,
- .lpv = 0,
- },
- {
- /* 5: a == b, b != c, c == d, d != e */
- .pnum = UINT64_C(0x0001000200010002),
- .idx = 4,
- .lpv = 1,
- },
- {
- /* 6: a != b, b == c, c == d, d != e */
- .pnum = UINT64_C(0x0001000200030001),
- .idx = 4,
- .lpv = 0,
- },
- {
- /* 7: a == b, b == c, c == d, d != e */
- .pnum = UINT64_C(0x0001000200030004),
- .idx = 4,
- .lpv = 3,
- },
- {
- /* 8: a != b, b != c, c != d, d == e */
- .pnum = UINT64_C(0x0002000100010001),
- .idx = 3,
- .lpv = 0,
- },
- {
- /* 9: a == b, b != c, c != d, d == e */
- .pnum = UINT64_C(0x0002000100010002),
- .idx = 3,
- .lpv = 1,
- },
- {
- /* 0xa: a != b, b == c, c != d, d == e */
- .pnum = UINT64_C(0x0002000100020001),
- .idx = 3,
- .lpv = 0,
- },
- {
- /* 0xb: a == b, b == c, c != d, d == e */
- .pnum = UINT64_C(0x0002000100020003),
- .idx = 3,
- .lpv = 2,
- },
- {
- /* 0xc: a != b, b != c, c == d, d == e */
- .pnum = UINT64_C(0x0002000300010001),
- .idx = 2,
- .lpv = 0,
- },
- {
- /* 0xd: a == b, b != c, c == d, d == e */
- .pnum = UINT64_C(0x0002000300010002),
- .idx = 2,
- .lpv = 1,
- },
- {
- /* 0xe: a != b, b == c, c == d, d == e */
- .pnum = UINT64_C(0x0002000300040001),
- .idx = 1,
- .lpv = 0,
- },
- {
- /* 0xf: a == b, b == c, c == d, d == e */
- .pnum = UINT64_C(0x0002000300040005),
- .idx = 0,
- .lpv = 4,
- },
- };
-
- union {
- uint16_t u16[FWDSTEP + 1];
- uint64_t u64;
- } *pnum = (void *)pn;
-
- int32_t v;
-
- dp1 = _mm_cmpeq_epi16(dp1, dp2);
- dp1 = _mm_unpacklo_epi16(dp1, dp1);
- v = _mm_movemask_ps((__m128)dp1);
-
- /* update last port counter. */
- lp[0] += gptbl[v].lpv;
-
- /* if dest port value has changed. */
- if (v != GRPMSK) {
- lp = pnum->u16 + gptbl[v].idx;
- lp[0] = 1;
- pnum->u64 = gptbl[v].pnum;
- }
-
- return lp;
-}
-
/*
* Buffer optimized handling of packets, invoked
* from main_loop.
l3fwd_lpm_send_packets(int nb_rx, struct rte_mbuf **pkts_burst,
uint8_t portid, struct lcore_conf *qconf)
{
- int32_t j, k;
- uint16_t dlp;
- uint16_t *lp;
+ int32_t j;
uint16_t dst_port[MAX_PKT_BURST];
__m128i dip[MAX_PKT_BURST / FWDSTEP];
uint32_t ipv4_flag[MAX_PKT_BURST / FWDSTEP];
- uint16_t pnum[MAX_PKT_BURST + 1];
+ const int32_t k = RTE_ALIGN_FLOOR(nb_rx, FWDSTEP);
- k = RTE_ALIGN_FLOOR(nb_rx, FWDSTEP);
- for (j = 0; j != k; j += FWDSTEP) {
- processx4_step1(&pkts_burst[j],
- &dip[j / FWDSTEP],
- &ipv4_flag[j / FWDSTEP]);
- }
+ for (j = 0; j != k; j += FWDSTEP)
+ processx4_step1(&pkts_burst[j], &dip[j / FWDSTEP],
+ &ipv4_flag[j / FWDSTEP]);
- k = RTE_ALIGN_FLOOR(nb_rx, FWDSTEP);
- for (j = 0; j != k; j += FWDSTEP) {
+ for (j = 0; j != k; j += FWDSTEP)
processx4_step2(qconf, dip[j / FWDSTEP],
- ipv4_flag[j / FWDSTEP], portid,
- &pkts_burst[j], &dst_port[j]);
- }
+ ipv4_flag[j / FWDSTEP], portid, &pkts_burst[j], &dst_port[j]);
- /*
- * Finish packet processing and group consecutive
- * packets with the same destination port.
- */
- k = RTE_ALIGN_FLOOR(nb_rx, FWDSTEP);
- if (k != 0) {
- __m128i dp1, dp2;
-
- lp = pnum;
- lp[0] = 1;
-
- processx4_step3(pkts_burst, dst_port);
-
- /* dp1: <d[0], d[1], d[2], d[3], ... > */
- dp1 = _mm_loadu_si128((__m128i *)dst_port);
-
- for (j = FWDSTEP; j != k; j += FWDSTEP) {
- processx4_step3(&pkts_burst[j], &dst_port[j]);
-
- /*
- * dp2:
- * <d[j-3], d[j-2], d[j-1], d[j], ... >
- */
- dp2 = _mm_loadu_si128((__m128i *)
- &dst_port[j - FWDSTEP + 1]);
- lp = port_groupx4(&pnum[j - FWDSTEP], lp, dp1, dp2);
-
- /*
- * dp1:
- * <d[j], d[j+1], d[j+2], d[j+3], ... >
- */
- dp1 = _mm_srli_si128(dp2, (FWDSTEP - 1) *
- sizeof(dst_port[0]));
- }
-
- /*
- * dp2: <d[j-3], d[j-2], d[j-1], d[j-1], ... >
- */
- dp2 = _mm_shufflelo_epi16(dp1, 0xf9);
- lp = port_groupx4(&pnum[j - FWDSTEP], lp, dp1, dp2);
-
- /*
- * remove values added by the last repeated
- * dst port.
- */
- lp[0]--;
- dlp = dst_port[j - 1];
- } else {
- /* set dlp and lp to the never used values. */
- dlp = BAD_PORT - 1;
- lp = pnum + MAX_PKT_BURST;
- }
-
- /* Process up to last 3 packets one by one. */
+ /* Classify last up to 3 packets one by one */
switch (nb_rx % FWDSTEP) {
case 3:
- process_packet(qconf, pkts_burst[j], dst_port + j, portid);
- GROUP_PORT_STEP(dlp, dst_port, lp, pnum, j);
+ dst_port[j] = lpm_get_dst_port(qconf, pkts_burst[j], portid);
j++;
case 2:
- process_packet(qconf, pkts_burst[j], dst_port + j, portid);
- GROUP_PORT_STEP(dlp, dst_port, lp, pnum, j);
+ dst_port[j] = lpm_get_dst_port(qconf, pkts_burst[j], portid);
j++;
case 1:
- process_packet(qconf, pkts_burst[j], dst_port + j, portid);
- GROUP_PORT_STEP(dlp, dst_port, lp, pnum, j);
+ dst_port[j] = lpm_get_dst_port(qconf, pkts_burst[j], portid);
j++;
}
- /*
- * Send packets out, through destination port.
- * Consecuteve pacekts with the same destination port
- * are already grouped together.
- * If destination port for the packet equals BAD_PORT,
- * then free the packet without sending it out.
- */
- for (j = 0; j < nb_rx; j += k) {
-
- int32_t m;
- uint16_t pn;
-
- pn = dst_port[j];
- k = pnum[j];
-
- if (likely(pn != BAD_PORT)) {
- send_packetsx4(qconf, pn, pkts_burst + j, k);
- } else {
- for (m = j; m != j + k; m++)
- rte_pktmbuf_free(pkts_burst[m]);
- }
- }
+ send_packets_multi(qconf, pkts_burst, dst_port, nb_rx);
}
#endif /* __L3FWD_LPM_SSE_H__ */
--- /dev/null
+/*-
+ * BSD LICENSE
+ *
+ * Copyright(c) 2016 Intel Corporation. All rights reserved.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#ifndef _L3FWD_COMMON_H_
+#define _L3FWD_COMMON_H_
+
+#include "l3fwd.h"
+
+#ifdef DO_RFC_1812_CHECKS
+
+#define IPV4_MIN_VER_IHL 0x45
+#define IPV4_MAX_VER_IHL 0x4f
+#define IPV4_MAX_VER_IHL_DIFF (IPV4_MAX_VER_IHL - IPV4_MIN_VER_IHL)
+
+/* Minimum value of IPV4 total length (20B) in network byte order. */
+#define IPV4_MIN_LEN_BE (sizeof(struct ipv4_hdr) << 8)
+
+/*
+ * From http://www.rfc-editor.org/rfc/rfc1812.txt section 5.2.2:
+ * - The IP version number must be 4.
+ * - The IP header length field must be large enough to hold the
+ * minimum length legal IP datagram (20 bytes = 5 words).
+ * - The IP total length field must be large enough to hold the IP
+ * datagram header, whose length is specified in the IP header length
+ * field.
+ * If we encounter invalid IPV4 packet, then set destination port for it
+ * to BAD_PORT value.
+ */
+static inline __attribute__((always_inline)) void
+rfc1812_process(struct ipv4_hdr *ipv4_hdr, uint16_t *dp, uint32_t ptype)
+{
+ uint8_t ihl;
+
+ if (RTE_ETH_IS_IPV4_HDR(ptype)) {
+ ihl = ipv4_hdr->version_ihl - IPV4_MIN_VER_IHL;
+
+ ipv4_hdr->time_to_live--;
+ ipv4_hdr->hdr_checksum++;
+
+ if (ihl > IPV4_MAX_VER_IHL_DIFF ||
+ ((uint8_t)ipv4_hdr->total_length == 0 &&
+ ipv4_hdr->total_length < IPV4_MIN_LEN_BE))
+ dp[0] = BAD_PORT;
+
+ }
+}
+
+#else
+#define rfc1812_process(mb, dp, ptype) do { } while (0)
+#endif /* DO_RFC_1812_CHECKS */
+
+/*
+ * Update source and destination MAC addresses in the ethernet header.
+ * Perform RFC1812 checks and updates for IPV4 packets.
+ */
+static inline void
+processx4_step3(struct rte_mbuf *pkt[FWDSTEP], uint16_t dst_port[FWDSTEP])
+{
+ __m128i te[FWDSTEP];
+ __m128i ve[FWDSTEP];
+ __m128i *p[FWDSTEP];
+
+ p[0] = rte_pktmbuf_mtod(pkt[0], __m128i *);
+ p[1] = rte_pktmbuf_mtod(pkt[1], __m128i *);
+ p[2] = rte_pktmbuf_mtod(pkt[2], __m128i *);
+ p[3] = rte_pktmbuf_mtod(pkt[3], __m128i *);
+
+ ve[0] = val_eth[dst_port[0]];
+ te[0] = _mm_loadu_si128(p[0]);
+
+ ve[1] = val_eth[dst_port[1]];
+ te[1] = _mm_loadu_si128(p[1]);
+
+ ve[2] = val_eth[dst_port[2]];
+ te[2] = _mm_loadu_si128(p[2]);
+
+ ve[3] = val_eth[dst_port[3]];
+ te[3] = _mm_loadu_si128(p[3]);
+
+ /* Update first 12 bytes, keep rest bytes intact. */
+ te[0] = _mm_blend_epi16(te[0], ve[0], MASK_ETH);
+ te[1] = _mm_blend_epi16(te[1], ve[1], MASK_ETH);
+ te[2] = _mm_blend_epi16(te[2], ve[2], MASK_ETH);
+ te[3] = _mm_blend_epi16(te[3], ve[3], MASK_ETH);
+
+ _mm_storeu_si128(p[0], te[0]);
+ _mm_storeu_si128(p[1], te[1]);
+ _mm_storeu_si128(p[2], te[2]);
+ _mm_storeu_si128(p[3], te[3]);
+
+ rfc1812_process((struct ipv4_hdr *)((struct ether_hdr *)p[0] + 1),
+ &dst_port[0], pkt[0]->packet_type);
+ rfc1812_process((struct ipv4_hdr *)((struct ether_hdr *)p[1] + 1),
+ &dst_port[1], pkt[1]->packet_type);
+ rfc1812_process((struct ipv4_hdr *)((struct ether_hdr *)p[2] + 1),
+ &dst_port[2], pkt[2]->packet_type);
+ rfc1812_process((struct ipv4_hdr *)((struct ether_hdr *)p[3] + 1),
+ &dst_port[3], pkt[3]->packet_type);
+}
+
+/*
+ * We group consecutive packets with the same destionation port into one burst.
+ * To avoid extra latency this is done together with some other packet
+ * processing, but after we made a final decision about packet's destination.
+ * To do this we maintain:
+ * pnum - array of number of consecutive packets with the same dest port for
+ * each packet in the input burst.
+ * lp - pointer to the last updated element in the pnum.
+ * dlp - dest port value lp corresponds to.
+ */
+
+#define GRPSZ (1 << FWDSTEP)
+#define GRPMSK (GRPSZ - 1)
+
+#define GROUP_PORT_STEP(dlp, dcp, lp, pn, idx) do { \
+ if (likely((dlp) == (dcp)[(idx)])) { \
+ (lp)[0]++; \
+ } else { \
+ (dlp) = (dcp)[idx]; \
+ (lp) = (pn) + (idx); \
+ (lp)[0] = 1; \
+ } \
+} while (0)
+
+/*
+ * Group consecutive packets with the same destination port in bursts of 4.
+ * Suppose we have array of destionation ports:
+ * dst_port[] = {a, b, c, d,, e, ... }
+ * dp1 should contain: <a, b, c, d>, dp2: <b, c, d, e>.
+ * We doing 4 comparisions at once and the result is 4 bit mask.
+ * This mask is used as an index into prebuild array of pnum values.
+ */
+static inline uint16_t *
+port_groupx4(uint16_t pn[FWDSTEP + 1], uint16_t *lp, __m128i dp1, __m128i dp2)
+{
+ static const struct {
+ uint64_t pnum; /* prebuild 4 values for pnum[]. */
+ int32_t idx; /* index for new last updated elemnet. */
+ uint16_t lpv; /* add value to the last updated element. */
+ } gptbl[GRPSZ] = {
+ {
+ /* 0: a != b, b != c, c != d, d != e */
+ .pnum = UINT64_C(0x0001000100010001),
+ .idx = 4,
+ .lpv = 0,
+ },
+ {
+ /* 1: a == b, b != c, c != d, d != e */
+ .pnum = UINT64_C(0x0001000100010002),
+ .idx = 4,
+ .lpv = 1,
+ },
+ {
+ /* 2: a != b, b == c, c != d, d != e */
+ .pnum = UINT64_C(0x0001000100020001),
+ .idx = 4,
+ .lpv = 0,
+ },
+ {
+ /* 3: a == b, b == c, c != d, d != e */
+ .pnum = UINT64_C(0x0001000100020003),
+ .idx = 4,
+ .lpv = 2,
+ },
+ {
+ /* 4: a != b, b != c, c == d, d != e */
+ .pnum = UINT64_C(0x0001000200010001),
+ .idx = 4,
+ .lpv = 0,
+ },
+ {
+ /* 5: a == b, b != c, c == d, d != e */
+ .pnum = UINT64_C(0x0001000200010002),
+ .idx = 4,
+ .lpv = 1,
+ },
+ {
+ /* 6: a != b, b == c, c == d, d != e */
+ .pnum = UINT64_C(0x0001000200030001),
+ .idx = 4,
+ .lpv = 0,
+ },
+ {
+ /* 7: a == b, b == c, c == d, d != e */
+ .pnum = UINT64_C(0x0001000200030004),
+ .idx = 4,
+ .lpv = 3,
+ },
+ {
+ /* 8: a != b, b != c, c != d, d == e */
+ .pnum = UINT64_C(0x0002000100010001),
+ .idx = 3,
+ .lpv = 0,
+ },
+ {
+ /* 9: a == b, b != c, c != d, d == e */
+ .pnum = UINT64_C(0x0002000100010002),
+ .idx = 3,
+ .lpv = 1,
+ },
+ {
+ /* 0xa: a != b, b == c, c != d, d == e */
+ .pnum = UINT64_C(0x0002000100020001),
+ .idx = 3,
+ .lpv = 0,
+ },
+ {
+ /* 0xb: a == b, b == c, c != d, d == e */
+ .pnum = UINT64_C(0x0002000100020003),
+ .idx = 3,
+ .lpv = 2,
+ },
+ {
+ /* 0xc: a != b, b != c, c == d, d == e */
+ .pnum = UINT64_C(0x0002000300010001),
+ .idx = 2,
+ .lpv = 0,
+ },
+ {
+ /* 0xd: a == b, b != c, c == d, d == e */
+ .pnum = UINT64_C(0x0002000300010002),
+ .idx = 2,
+ .lpv = 1,
+ },
+ {
+ /* 0xe: a != b, b == c, c == d, d == e */
+ .pnum = UINT64_C(0x0002000300040001),
+ .idx = 1,
+ .lpv = 0,
+ },
+ {
+ /* 0xf: a == b, b == c, c == d, d == e */
+ .pnum = UINT64_C(0x0002000300040005),
+ .idx = 0,
+ .lpv = 4,
+ },
+ };
+
+ union {
+ uint16_t u16[FWDSTEP + 1];
+ uint64_t u64;
+ } *pnum = (void *)pn;
+
+ int32_t v;
+
+ dp1 = _mm_cmpeq_epi16(dp1, dp2);
+ dp1 = _mm_unpacklo_epi16(dp1, dp1);
+ v = _mm_movemask_ps((__m128)dp1);
+
+ /* update last port counter. */
+ lp[0] += gptbl[v].lpv;
+
+ /* if dest port value has changed. */
+ if (v != GRPMSK) {
+ lp = pnum->u16 + gptbl[v].idx;
+ lp[0] = 1;
+ pnum->u64 = gptbl[v].pnum;
+ }
+
+ return lp;
+}
+
+/**
+ * Process one packet:
+ * Update source and destination MAC addresses in the ethernet header.
+ * Perform RFC1812 checks and updates for IPV4 packets.
+ */
+static inline void
+process_packet(struct rte_mbuf *pkt, uint16_t *dst_port)
+{
+ struct ether_hdr *eth_hdr;
+ __m128i te, ve;
+
+ eth_hdr = rte_pktmbuf_mtod(pkt, struct ether_hdr *);
+
+ te = _mm_loadu_si128((__m128i *)eth_hdr);
+ ve = val_eth[dst_port[0]];
+
+ rfc1812_process((struct ipv4_hdr *)(eth_hdr + 1), dst_port,
+ pkt->packet_type);
+
+ te = _mm_blend_epi16(te, ve, MASK_ETH);
+ _mm_storeu_si128((__m128i *)eth_hdr, te);
+}
+
+static inline __attribute__((always_inline)) void
+send_packetsx4(struct lcore_conf *qconf, uint8_t port, struct rte_mbuf *m[],
+ uint32_t num)
+{
+ uint32_t len, j, n;
+
+ len = qconf->tx_mbufs[port].len;
+
+ /*
+ * If TX buffer for that queue is empty, and we have enough packets,
+ * then send them straightway.
+ */
+ if (num >= MAX_TX_BURST && len == 0) {
+ n = rte_eth_tx_burst(port, qconf->tx_queue_id[port], m, num);
+ if (unlikely(n < num)) {
+ do {
+ rte_pktmbuf_free(m[n]);
+ } while (++n < num);
+ }
+ return;
+ }
+
+ /*
+ * Put packets into TX buffer for that queue.
+ */
+
+ n = len + num;
+ n = (n > MAX_PKT_BURST) ? MAX_PKT_BURST - len : num;
+
+ j = 0;
+ switch (n % FWDSTEP) {
+ while (j < n) {
+ case 0:
+ qconf->tx_mbufs[port].m_table[len + j] = m[j];
+ j++;
+ case 3:
+ qconf->tx_mbufs[port].m_table[len + j] = m[j];
+ j++;
+ case 2:
+ qconf->tx_mbufs[port].m_table[len + j] = m[j];
+ j++;
+ case 1:
+ qconf->tx_mbufs[port].m_table[len + j] = m[j];
+ j++;
+ }
+ }
+
+ len += n;
+
+ /* enough pkts to be sent */
+ if (unlikely(len == MAX_PKT_BURST)) {
+
+ send_burst(qconf, MAX_PKT_BURST, port);
+
+ /* copy rest of the packets into the TX buffer. */
+ len = num - n;
+ j = 0;
+ switch (len % FWDSTEP) {
+ while (j < len) {
+ case 0:
+ qconf->tx_mbufs[port].m_table[j] = m[n + j];
+ j++;
+ case 3:
+ qconf->tx_mbufs[port].m_table[j] = m[n + j];
+ j++;
+ case 2:
+ qconf->tx_mbufs[port].m_table[j] = m[n + j];
+ j++;
+ case 1:
+ qconf->tx_mbufs[port].m_table[j] = m[n + j];
+ j++;
+ }
+ }
+ }
+
+ qconf->tx_mbufs[port].len = len;
+}
+
+/**
+ * Send packets burst from pkts_burst to the ports in dst_port array
+ */
+static inline __attribute__((always_inline)) void
+send_packets_multi(struct lcore_conf *qconf, struct rte_mbuf **pkts_burst,
+ uint16_t dst_port[MAX_PKT_BURST], int nb_rx)
+{
+ int32_t k;
+ int j = 0;
+ uint16_t dlp;
+ uint16_t *lp;
+ uint16_t pnum[MAX_PKT_BURST + 1];
+
+ /*
+ * Finish packet processing and group consecutive
+ * packets with the same destination port.
+ */
+ k = RTE_ALIGN_FLOOR(nb_rx, FWDSTEP);
+ if (k != 0) {
+ __m128i dp1, dp2;
+
+ lp = pnum;
+ lp[0] = 1;
+
+ processx4_step3(pkts_burst, dst_port);
+
+ /* dp1: <d[0], d[1], d[2], d[3], ... > */
+ dp1 = _mm_loadu_si128((__m128i *)dst_port);
+
+ for (j = FWDSTEP; j != k; j += FWDSTEP) {
+ processx4_step3(&pkts_burst[j], &dst_port[j]);
+
+ /*
+ * dp2:
+ * <d[j-3], d[j-2], d[j-1], d[j], ... >
+ */
+ dp2 = _mm_loadu_si128((__m128i *)
+ &dst_port[j - FWDSTEP + 1]);
+ lp = port_groupx4(&pnum[j - FWDSTEP], lp, dp1, dp2);
+
+ /*
+ * dp1:
+ * <d[j], d[j+1], d[j+2], d[j+3], ... >
+ */
+ dp1 = _mm_srli_si128(dp2, (FWDSTEP - 1) *
+ sizeof(dst_port[0]));
+ }
+
+ /*
+ * dp2: <d[j-3], d[j-2], d[j-1], d[j-1], ... >
+ */
+ dp2 = _mm_shufflelo_epi16(dp1, 0xf9);
+ lp = port_groupx4(&pnum[j - FWDSTEP], lp, dp1, dp2);
+
+ /*
+ * remove values added by the last repeated
+ * dst port.
+ */
+ lp[0]--;
+ dlp = dst_port[j - 1];
+ } else {
+ /* set dlp and lp to the never used values. */
+ dlp = BAD_PORT - 1;
+ lp = pnum + MAX_PKT_BURST;
+ }
+
+ /* Process up to last 3 packets one by one. */
+ switch (nb_rx % FWDSTEP) {
+ case 3:
+ process_packet(pkts_burst[j], dst_port + j);
+ GROUP_PORT_STEP(dlp, dst_port, lp, pnum, j);
+ j++;
+ case 2:
+ process_packet(pkts_burst[j], dst_port + j);
+ GROUP_PORT_STEP(dlp, dst_port, lp, pnum, j);
+ j++;
+ case 1:
+ process_packet(pkts_burst[j], dst_port + j);
+ GROUP_PORT_STEP(dlp, dst_port, lp, pnum, j);
+ j++;
+ }
+
+ /*
+ * Send packets out, through destination port.
+ * Consecutive packets with the same destination port
+ * are already grouped together.
+ * If destination port for the packet equals BAD_PORT,
+ * then free the packet without sending it out.
+ */
+ for (j = 0; j < nb_rx; j += k) {
+
+ int32_t m;
+ uint16_t pn;
+
+ pn = dst_port[j];
+ k = pnum[j];
+
+ if (likely(pn != BAD_PORT))
+ send_packetsx4(qconf, pn, pkts_burst + j, k);
+ else
+ for (m = j; m != j + k; m++)
+ rte_pktmbuf_free(pkts_burst[m]);
+
+ }
+}
+
+#endif /* _L3FWD_COMMON_H_ */
git.droids-corp.org / dpdk.git / commitdiff