Signed-off-by: Nicolas Morey-Chaisemartin <[email protected]>
---
platform/linux-generic/Makefile.am | 1 +
platform/linux-generic/include/odp_packet_socket.h | 13 +
platform/linux-generic/pktio/socket.c | 486 --------------------
platform/linux-generic/pktio/socket_mmap.c | 491 +++++++++++++++++++++
4 files changed, 505 insertions(+), 486 deletions(-)
create mode 100644 platform/linux-generic/pktio/socket_mmap.c
diff --git a/platform/linux-generic/Makefile.am
b/platform/linux-generic/Makefile.am
index 5fcab42..d54ed86 100644
--- a/platform/linux-generic/Makefile.am
+++ b/platform/linux-generic/Makefile.am
@@ -141,6 +141,7 @@ __LIB__libodp_la_SOURCES = \
odp_packet_flags.c \
odp_packet_io.c \
pktio/socket.c \
+ pktio/socket_mmap.c \
odp_pool.c \
odp_queue.c \
odp_rwlock.c \
diff --git a/platform/linux-generic/include/odp_packet_socket.h
b/platform/linux-generic/include/odp_packet_socket.h
index 098d58d..c3921e6 100644
--- a/platform/linux-generic/include/odp_packet_socket.h
+++ b/platform/linux-generic/include/odp_packet_socket.h
@@ -11,6 +11,7 @@
#include <linux/if_packet.h>
#include <linux/if_ether.h>
#include <sys/socket.h>
+#include <string.h>
#include <odp/align.h>
#include <odp/buffer.h>
@@ -84,6 +85,18 @@ typedef struct {
int fanout;
} pkt_sock_mmap_t;
+static inline void
+ethaddr_copy(unsigned char mac_dst[], unsigned char mac_src[])
+{
+ memcpy(mac_dst, mac_src, ETH_ALEN);
+}
+
+static inline int
+ethaddrs_equal(unsigned char mac_a[], unsigned char mac_b[])
+{
+ return !memcmp(mac_a, mac_b, ETH_ALEN);
+}
+
/**
* Open & configure a raw packet socket
*/
diff --git a/platform/linux-generic/pktio/socket.c
b/platform/linux-generic/pktio/socket.c
index b547a1b..c1fb008 100644
--- a/platform/linux-generic/pktio/socket.c
+++ b/platform/linux-generic/pktio/socket.c
@@ -14,7 +14,6 @@
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
-#include <sys/mman.h>
#include <linux/if_packet.h>
#include <linux/filter.h>
#include <ctype.h>
@@ -88,36 +87,6 @@ int sendmmsg(int fd, struct mmsghdr *vmessages, unsigned int
vlen, int flags)
#define ETHBUF_ALIGN(buf_ptr) ((uint8_t *)ODP_ALIGN_ROUNDUP_PTR((buf_ptr), \
sizeof(uint32_t)) + ETHBUF_OFFSET)
-static void ethaddr_copy(unsigned char mac_dst[], unsigned char mac_src[])
-{
- memcpy(mac_dst, mac_src, ETH_ALEN);
-}
-
-static inline int ethaddrs_equal(unsigned char mac_a[], unsigned char mac_b[])
-{
- return !memcmp(mac_a, mac_b, ETH_ALEN);
-}
-
-static int set_pkt_sock_fanout_mmap(pkt_sock_mmap_t *const pkt_sock,
- int sock_group_idx)
-{
- int sockfd = pkt_sock->sockfd;
- int val;
- int err;
- uint16_t fanout_group;
-
- fanout_group = (uint16_t)(sock_group_idx & 0xffff);
- val = (PACKET_FANOUT_HASH << 16) | fanout_group;
-
- err = setsockopt(sockfd, SOL_PACKET, PACKET_FANOUT, &val, sizeof(val));
- if (err != 0) {
- __odp_errno = errno;
- ODP_ERR("setsockopt(PACKET_FANOUT): %s\n", strerror(errno));
- return -1;
- }
- return 0;
-}
-
/*
* ODP_PACKET_SOCKET_BASIC:
* ODP_PACKET_SOCKET_MMSG:
@@ -414,458 +383,3 @@ int send_pkt_sock_mmsg(pkt_sock_t *const pkt_sock,
return len;
}
-
-/*
- * ODP_PACKET_SOCKET_MMAP:
- */
-
-union frame_map {
- struct {
- struct tpacket2_hdr tp_h ODP_ALIGNED(TPACKET_ALIGNMENT);
- struct sockaddr_ll s_ll
- ODP_ALIGNED(TPACKET_ALIGN(sizeof(struct tpacket2_hdr)));
- } *v2;
-
- void *raw;
-};
-
-static int mmap_pkt_socket(void)
-{
- int ver = TPACKET_V2;
-
- int ret, sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
-
- if (sock == -1) {
- __odp_errno = errno;
- ODP_ERR("socket(SOCK_RAW): %s\n", strerror(errno));
- return -1;
- }
-
- ret = setsockopt(sock, SOL_PACKET, PACKET_VERSION, &ver, sizeof(ver));
- if (ret == -1) {
- __odp_errno = errno;
- ODP_ERR("setsockopt(PACKET_VERSION): %s\n", strerror(errno));
- close(sock);
- return -1;
- }
-
- return sock;
-}
-
-static inline int mmap_rx_kernel_ready(struct tpacket2_hdr *hdr)
-{
- return ((hdr->tp_status & TP_STATUS_USER) == TP_STATUS_USER);
-}
-
-static inline void mmap_rx_user_ready(struct tpacket2_hdr *hdr)
-{
- hdr->tp_status = TP_STATUS_KERNEL;
- __sync_synchronize();
-}
-
-static inline int mmap_tx_kernel_ready(struct tpacket2_hdr *hdr)
-{
- return !(hdr->tp_status & (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING));
-}
-
-static inline void mmap_tx_user_ready(struct tpacket2_hdr *hdr)
-{
- hdr->tp_status = TP_STATUS_SEND_REQUEST;
- __sync_synchronize();
-}
-
-static inline unsigned pkt_mmap_v2_rx(int sock, struct ring *ring,
- odp_packet_t pkt_table[], unsigned len,
- odp_pool_t pool,
- unsigned char if_mac[])
-{
- union frame_map ppd;
- unsigned frame_num, next_frame_num;
- uint8_t *pkt_buf;
- int pkt_len;
- struct ethhdr *eth_hdr;
- unsigned i = 0;
-
- (void)sock;
-
- frame_num = ring->frame_num;
-
- while (i < len) {
- if (mmap_rx_kernel_ready(ring->rd[frame_num].iov_base)) {
- ppd.raw = ring->rd[frame_num].iov_base;
-
- next_frame_num = (frame_num + 1) % ring->rd_num;
-
- pkt_buf = (uint8_t *)ppd.raw + ppd.v2->tp_h.tp_mac;
- pkt_len = ppd.v2->tp_h.tp_snaplen;
-
- /* Don't receive packets sent by ourselves */
- eth_hdr = (struct ethhdr *)pkt_buf;
- if (odp_unlikely(ethaddrs_equal(if_mac,
- eth_hdr->h_source))) {
- mmap_rx_user_ready(ppd.raw); /* drop */
- frame_num = next_frame_num;
- continue;
- }
-
- pkt_table[i] = odp_packet_alloc(pool, pkt_len);
- if (odp_unlikely(pkt_table[i] == ODP_PACKET_INVALID))
- break;
-
- if (odp_packet_copydata_in(pkt_table[i], 0,
- pkt_len, pkt_buf) != 0) {
- odp_packet_free(pkt_table[i]);
- break;
- }
-
- mmap_rx_user_ready(ppd.raw);
-
- /* Parse and set packet header data */
- _odp_packet_reset_parse(pkt_table[i]);
-
- frame_num = next_frame_num;
- i++;
- } else {
- break;
- }
- }
-
- ring->frame_num = frame_num;
-
- return i;
-}
-
-static inline unsigned pkt_mmap_v2_tx(int sock, struct ring *ring,
- odp_packet_t pkt_table[], unsigned len)
-{
- union frame_map ppd;
- uint32_t pkt_len;
- unsigned frame_num, next_frame_num;
- int ret;
- unsigned i = 0;
-
- frame_num = ring->frame_num;
-
- while (i < len) {
- if (mmap_tx_kernel_ready(ring->rd[frame_num].iov_base)) {
- ppd.raw = ring->rd[frame_num].iov_base;
-
- next_frame_num = (frame_num + 1) % ring->rd_num;
-
- pkt_len = odp_packet_len(pkt_table[i]);
- ppd.v2->tp_h.tp_snaplen = pkt_len;
- ppd.v2->tp_h.tp_len = pkt_len;
-
- odp_packet_copydata_out(pkt_table[i], 0, pkt_len,
- (uint8_t *)ppd.raw +
- TPACKET2_HDRLEN -
- sizeof(struct sockaddr_ll));
-
- mmap_tx_user_ready(ppd.raw);
-
- odp_packet_free(pkt_table[i]);
- frame_num = next_frame_num;
- i++;
- } else {
- break;
- }
- }
-
- ring->frame_num = frame_num;
-
- ret = sendto(sock, NULL, 0, MSG_DONTWAIT, NULL, 0);
- if (ret == -1) {
- if (errno != EAGAIN) {
- __odp_errno = errno;
- ODP_ERR("sendto(pkt mmap): %s\n", strerror(errno));
- return -1;
- }
- }
-
- return i;
-}
-
-static void mmap_fill_ring(struct ring *ring, odp_pool_t pool_hdl, int fanout)
-{
- /*@todo add Huge Pages support*/
- int pz = getpagesize();
- uint32_t pool_id;
- pool_entry_t *pool_entry;
-
- if (pool_hdl == ODP_POOL_INVALID)
- ODP_ABORT("Invalid pool handle\n");
-
- pool_id = pool_handle_to_index(pool_hdl);
- pool_entry = get_pool_entry(pool_id);
-
- /* Frame has to capture full packet which can fit to the pool block.*/
- ring->req.tp_frame_size = (pool_entry->s.blk_size +
- TPACKET_HDRLEN + TPACKET_ALIGNMENT +
- + (pz - 1)) & (-pz);
-
- /* Calculate how many pages do we need to hold all pool packets
- * and align size to page boundary.
- */
- ring->req.tp_block_size = (ring->req.tp_frame_size *
- pool_entry->s.buf_num + (pz - 1)) & (-pz);
-
- if (!fanout) {
- /* Single socket is in use. Use 1 block with buf_num frames. */
- ring->req.tp_block_nr = 1;
- } else {
- /* Fanout is in use, more likely taffic split accodring to
- * number of cpu threads. Use cpu blocks and buf_num frames. */
- ring->req.tp_block_nr = odp_cpu_count();
- }
-
- ring->req.tp_frame_nr = ring->req.tp_block_size /
- ring->req.tp_frame_size * ring->req.tp_block_nr;
-
- ring->mm_len = ring->req.tp_block_size * ring->req.tp_block_nr;
- ring->rd_num = ring->req.tp_frame_nr;
- ring->flen = ring->req.tp_frame_size;
-}
-
-static int mmap_set_packet_loss_discard(int sock)
-{
- int ret, discard = 1;
-
- ret = setsockopt(sock, SOL_PACKET, PACKET_LOSS, (void *)&discard,
- sizeof(discard));
- if (ret == -1) {
- __odp_errno = errno;
- ODP_ERR("setsockopt(PACKET_LOSS): %s\n", strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
-static int mmap_setup_ring(int sock, struct ring *ring, int type,
- odp_pool_t pool_hdl, int fanout)
-{
- int ret = 0;
-
- ring->sock = sock;
- ring->type = type;
- ring->version = TPACKET_V2;
-
- if (type == PACKET_TX_RING) {
- ret = mmap_set_packet_loss_discard(sock);
- if (ret != 0)
- return -1;
- }
-
- mmap_fill_ring(ring, pool_hdl, fanout);
-
- ret = setsockopt(sock, SOL_PACKET, type, &ring->req, sizeof(ring->req));
- if (ret == -1) {
- __odp_errno = errno;
- ODP_ERR("setsockopt(pkt mmap): %s\n", strerror(errno));
- return -1;
- }
-
- ring->rd_len = ring->rd_num * sizeof(*ring->rd);
- ring->rd = malloc(ring->rd_len);
- if (!ring->rd) {
- __odp_errno = errno;
- ODP_ERR("malloc(): %s\n", strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
-static int mmap_sock(pkt_sock_mmap_t *pkt_sock)
-{
- int i;
- int sock = pkt_sock->sockfd;
-
- /* map rx + tx buffer to userspace : they are in this order */
- pkt_sock->mmap_len =
- pkt_sock->rx_ring.req.tp_block_size *
- pkt_sock->rx_ring.req.tp_block_nr +
- pkt_sock->tx_ring.req.tp_block_size *
- pkt_sock->tx_ring.req.tp_block_nr;
-
- pkt_sock->mmap_base =
- mmap(NULL, pkt_sock->mmap_len, PROT_READ | PROT_WRITE,
- MAP_SHARED | MAP_LOCKED | MAP_POPULATE, sock, 0);
-
- if (pkt_sock->mmap_base == MAP_FAILED) {
- __odp_errno = errno;
- ODP_ERR("mmap rx&tx buffer failed: %s\n", strerror(errno));
- return -1;
- }
-
- pkt_sock->rx_ring.mm_space = pkt_sock->mmap_base;
- memset(pkt_sock->rx_ring.rd, 0, pkt_sock->rx_ring.rd_len);
- for (i = 0; i < pkt_sock->rx_ring.rd_num; ++i) {
- pkt_sock->rx_ring.rd[i].iov_base =
- pkt_sock->rx_ring.mm_space
- + (i * pkt_sock->rx_ring.flen);
- pkt_sock->rx_ring.rd[i].iov_len = pkt_sock->rx_ring.flen;
- }
-
- pkt_sock->tx_ring.mm_space =
- pkt_sock->mmap_base + pkt_sock->rx_ring.mm_len;
- memset(pkt_sock->tx_ring.rd, 0, pkt_sock->tx_ring.rd_len);
- for (i = 0; i < pkt_sock->tx_ring.rd_num; ++i) {
- pkt_sock->tx_ring.rd[i].iov_base =
- pkt_sock->tx_ring.mm_space
- + (i * pkt_sock->tx_ring.flen);
- pkt_sock->tx_ring.rd[i].iov_len = pkt_sock->tx_ring.flen;
- }
-
- return 0;
-}
-
-static void mmap_unmap_sock(pkt_sock_mmap_t *pkt_sock)
-{
- munmap(pkt_sock->mmap_base, pkt_sock->mmap_len);
- free(pkt_sock->rx_ring.rd);
- free(pkt_sock->tx_ring.rd);
-}
-
-static int mmap_bind_sock(pkt_sock_mmap_t *pkt_sock, const char *netdev)
-{
- int ret;
-
- pkt_sock->ll.sll_family = PF_PACKET;
- pkt_sock->ll.sll_protocol = htons(ETH_P_ALL);
- pkt_sock->ll.sll_ifindex = if_nametoindex(netdev);
- pkt_sock->ll.sll_hatype = 0;
- pkt_sock->ll.sll_pkttype = 0;
- pkt_sock->ll.sll_halen = 0;
-
- ret = bind(pkt_sock->sockfd, (struct sockaddr *)&pkt_sock->ll,
- sizeof(pkt_sock->ll));
- if (ret == -1) {
- __odp_errno = errno;
- ODP_ERR("bind(to IF): %s\n", strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
-static int mmap_store_hw_addr(pkt_sock_mmap_t *const pkt_sock,
- const char *netdev)
-{
- struct ifreq ethreq;
- int ret;
-
- /* get MAC address */
- memset(ðreq, 0, sizeof(ethreq));
- snprintf(ethreq.ifr_name, IF_NAMESIZE, "%s", netdev);
- ret = ioctl(pkt_sock->sockfd, SIOCGIFHWADDR, ðreq);
- if (ret != 0) {
- __odp_errno = errno;
- ODP_ERR("ioctl(SIOCGIFHWADDR): %s: \"%s\".\n",
- strerror(errno),
- ethreq.ifr_name);
- return -1;
- }
-
- ethaddr_copy(pkt_sock->if_mac,
- (unsigned char *)ethreq.ifr_ifru.ifru_hwaddr.sa_data);
-
- return 0;
-}
-
-/*
- * ODP_PACKET_SOCKET_MMAP:
- */
-int setup_pkt_sock_mmap(pkt_sock_mmap_t *const pkt_sock, const char *netdev,
- odp_pool_t pool, int fanout)
-{
- int if_idx;
- int ret = 0;
-
- memset(pkt_sock, 0, sizeof(*pkt_sock));
-
- if (pool == ODP_POOL_INVALID)
- return -1;
-
- /* Store eth buffer offset for pkt buffers from this pool */
- pkt_sock->frame_offset = 0;
-
- pkt_sock->pool = pool;
- pkt_sock->sockfd = mmap_pkt_socket();
- if (pkt_sock->sockfd == -1)
- return -1;
-
- ret = mmap_bind_sock(pkt_sock, netdev);
- if (ret != 0)
- return -1;
-
- ret = mmap_setup_ring(pkt_sock->sockfd, &pkt_sock->tx_ring,
- PACKET_TX_RING, pool, fanout);
- if (ret != 0)
- return -1;
-
- ret = mmap_setup_ring(pkt_sock->sockfd, &pkt_sock->rx_ring,
- PACKET_RX_RING, pool, fanout);
- if (ret != 0)
- return -1;
-
- ret = mmap_sock(pkt_sock);
- if (ret != 0)
- return -1;
-
- ret = mmap_store_hw_addr(pkt_sock, netdev);
- if (ret != 0)
- return -1;
-
- if_idx = if_nametoindex(netdev);
- if (if_idx == 0) {
- __odp_errno = errno;
- ODP_ERR("if_nametoindex(): %s\n", strerror(errno));
- return -1;
- }
-
- pkt_sock->fanout = fanout;
- if (fanout) {
- ret = set_pkt_sock_fanout_mmap(pkt_sock, if_idx);
- if (ret != 0)
- return -1;
- }
-
- return pkt_sock->sockfd;
-}
-
-/*
- * ODP_PACKET_SOCKET_MMAP:
- */
-int close_pkt_sock_mmap(pkt_sock_mmap_t *const pkt_sock)
-{
- mmap_unmap_sock(pkt_sock);
- if (pkt_sock->sockfd != -1 && close(pkt_sock->sockfd) != 0) {
- __odp_errno = errno;
- ODP_ERR("close(sockfd): %s\n", strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
-/*
- * ODP_PACKET_SOCKET_MMAP:
- */
-int recv_pkt_sock_mmap(pkt_sock_mmap_t *const pkt_sock,
- odp_packet_t pkt_table[], unsigned len)
-{
- return pkt_mmap_v2_rx(pkt_sock->rx_ring.sock, &pkt_sock->rx_ring,
- pkt_table, len, pkt_sock->pool,
- pkt_sock->if_mac);
-}
-
-/*
- * ODP_PACKET_SOCKET_MMAP:
- */
-int send_pkt_sock_mmap(pkt_sock_mmap_t *const pkt_sock,
- odp_packet_t pkt_table[], unsigned len)
-{
- return pkt_mmap_v2_tx(pkt_sock->tx_ring.sock, &pkt_sock->tx_ring,
- pkt_table, len);
-}
diff --git a/platform/linux-generic/pktio/socket_mmap.c
b/platform/linux-generic/pktio/socket_mmap.c
new file mode 100644
index 0000000..b9c2ee4
--- /dev/null
+++ b/platform/linux-generic/pktio/socket_mmap.c
@@ -0,0 +1,491 @@
+/* Copyright (c) 2013, Linaro Limited
+ * Copyright (c) 2013, Nokia Solutions and Networks
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#ifndef _GNU_SOURCE
+#define _GNU_SOURCE
+#endif
+
+#include <sys/socket.h>
+#include <stdio.h>
+#include <sys/mman.h>
+#include <unistd.h>
+#include <bits/wordsize.h>
+#include <net/ethernet.h>
+#include <netinet/ip.h>
+#include <stdint.h>
+#include <net/if.h>
+#include <poll.h>
+#include <sys/ioctl.h>
+#include <errno.h>
+
+#include <odp.h>
+#include <odp_packet_socket.h>
+#include <odp_packet_internal.h>
+#include <odp_debug_internal.h>
+#include <odp/hints.h>
+
+#include <odp/helper/eth.h>
+#include <odp/helper/ip.h>
+
+static int set_pkt_sock_fanout_mmap(pkt_sock_mmap_t *const pkt_sock,
+ int sock_group_idx)
+{
+ int sockfd = pkt_sock->sockfd;
+ int val;
+ int err;
+ uint16_t fanout_group;
+
+ fanout_group = (uint16_t)(sock_group_idx & 0xffff);
+ val = (PACKET_FANOUT_HASH << 16) | fanout_group;
+
+ err = setsockopt(sockfd, SOL_PACKET, PACKET_FANOUT, &val, sizeof(val));
+ if (err != 0) {
+ __odp_errno = errno;
+ ODP_ERR("setsockopt(PACKET_FANOUT): %s\n", strerror(errno));
+ return -1;
+ }
+ return 0;
+}
+
+union frame_map {
+ struct {
+ struct tpacket2_hdr tp_h ODP_ALIGNED(TPACKET_ALIGNMENT);
+ struct sockaddr_ll s_ll
+ ODP_ALIGNED(TPACKET_ALIGN(sizeof(struct tpacket2_hdr)));
+ } *v2;
+
+ void *raw;
+};
+
+static int mmap_pkt_socket(void)
+{
+ int ver = TPACKET_V2;
+
+ int ret, sock = socket(PF_PACKET, SOCK_RAW, htons(ETH_P_ALL));
+
+ if (sock == -1) {
+ __odp_errno = errno;
+ ODP_ERR("socket(SOCK_RAW): %s\n", strerror(errno));
+ return -1;
+ }
+
+ ret = setsockopt(sock, SOL_PACKET, PACKET_VERSION, &ver, sizeof(ver));
+ if (ret == -1) {
+ __odp_errno = errno;
+ ODP_ERR("setsockopt(PACKET_VERSION): %s\n", strerror(errno));
+ close(sock);
+ return -1;
+ }
+
+ return sock;
+}
+
+static inline int mmap_rx_kernel_ready(struct tpacket2_hdr *hdr)
+{
+ return ((hdr->tp_status & TP_STATUS_USER) == TP_STATUS_USER);
+}
+
+static inline void mmap_rx_user_ready(struct tpacket2_hdr *hdr)
+{
+ hdr->tp_status = TP_STATUS_KERNEL;
+ __sync_synchronize();
+}
+
+static inline int mmap_tx_kernel_ready(struct tpacket2_hdr *hdr)
+{
+ return !(hdr->tp_status & (TP_STATUS_SEND_REQUEST | TP_STATUS_SENDING));
+}
+
+static inline void mmap_tx_user_ready(struct tpacket2_hdr *hdr)
+{
+ hdr->tp_status = TP_STATUS_SEND_REQUEST;
+ __sync_synchronize();
+}
+
+static inline unsigned pkt_mmap_v2_rx(int sock, struct ring *ring,
+ odp_packet_t pkt_table[], unsigned len,
+ odp_pool_t pool,
+ unsigned char if_mac[])
+{
+ union frame_map ppd;
+ unsigned frame_num, next_frame_num;
+ uint8_t *pkt_buf;
+ int pkt_len;
+ struct ethhdr *eth_hdr;
+ unsigned i = 0;
+
+ (void)sock;
+
+ frame_num = ring->frame_num;
+
+ while (i < len) {
+ if (mmap_rx_kernel_ready(ring->rd[frame_num].iov_base)) {
+ ppd.raw = ring->rd[frame_num].iov_base;
+
+ next_frame_num = (frame_num + 1) % ring->rd_num;
+
+ pkt_buf = (uint8_t *)ppd.raw + ppd.v2->tp_h.tp_mac;
+ pkt_len = ppd.v2->tp_h.tp_snaplen;
+
+ /* Don't receive packets sent by ourselves */
+ eth_hdr = (struct ethhdr *)pkt_buf;
+ if (odp_unlikely(ethaddrs_equal(if_mac,
+ eth_hdr->h_source))) {
+ mmap_rx_user_ready(ppd.raw); /* drop */
+ frame_num = next_frame_num;
+ continue;
+ }
+
+ pkt_table[i] = odp_packet_alloc(pool, pkt_len);
+ if (odp_unlikely(pkt_table[i] == ODP_PACKET_INVALID))
+ break;
+
+ if (odp_packet_copydata_in(pkt_table[i], 0,
+ pkt_len, pkt_buf) != 0) {
+ odp_packet_free(pkt_table[i]);
+ break;
+ }
+
+ mmap_rx_user_ready(ppd.raw);
+
+ /* Parse and set packet header data */
+ _odp_packet_reset_parse(pkt_table[i]);
+
+ frame_num = next_frame_num;
+ i++;
+ } else {
+ break;
+ }
+ }
+
+ ring->frame_num = frame_num;
+
+ return i;
+}
+
+static inline unsigned pkt_mmap_v2_tx(int sock, struct ring *ring,
+ odp_packet_t pkt_table[], unsigned len)
+{
+ union frame_map ppd;
+ uint32_t pkt_len;
+ unsigned frame_num, next_frame_num;
+ int ret;
+ unsigned i = 0;
+
+ frame_num = ring->frame_num;
+
+ while (i < len) {
+ if (mmap_tx_kernel_ready(ring->rd[frame_num].iov_base)) {
+ ppd.raw = ring->rd[frame_num].iov_base;
+
+ next_frame_num = (frame_num + 1) % ring->rd_num;
+
+ pkt_len = odp_packet_len(pkt_table[i]);
+ ppd.v2->tp_h.tp_snaplen = pkt_len;
+ ppd.v2->tp_h.tp_len = pkt_len;
+
+ odp_packet_copydata_out(pkt_table[i], 0, pkt_len,
+ (uint8_t *)ppd.raw +
+ TPACKET2_HDRLEN -
+ sizeof(struct sockaddr_ll));
+
+ mmap_tx_user_ready(ppd.raw);
+
+ odp_packet_free(pkt_table[i]);
+ frame_num = next_frame_num;
+ i++;
+ } else {
+ break;
+ }
+ }
+
+ ring->frame_num = frame_num;
+
+ ret = sendto(sock, NULL, 0, MSG_DONTWAIT, NULL, 0);
+ if (ret == -1) {
+ if (errno != EAGAIN) {
+ __odp_errno = errno;
+ ODP_ERR("sendto(pkt mmap): %s\n", strerror(errno));
+ return -1;
+ }
+ }
+
+ return i;
+}
+
+static void mmap_fill_ring(struct ring *ring, odp_pool_t pool_hdl, int fanout)
+{
+ /*@todo add Huge Pages support*/
+ int pz = getpagesize();
+ uint32_t pool_id;
+ pool_entry_t *pool_entry;
+
+ if (pool_hdl == ODP_POOL_INVALID)
+ ODP_ABORT("Invalid pool handle\n");
+
+ pool_id = pool_handle_to_index(pool_hdl);
+ pool_entry = get_pool_entry(pool_id);
+
+ /* Frame has to capture full packet which can fit to the pool block.*/
+ ring->req.tp_frame_size = (pool_entry->s.blk_size +
+ TPACKET_HDRLEN + TPACKET_ALIGNMENT +
+ + (pz - 1)) & (-pz);
+
+ /* Calculate how many pages do we need to hold all pool packets
+ * and align size to page boundary.
+ */
+ ring->req.tp_block_size = (ring->req.tp_frame_size *
+ pool_entry->s.buf_num + (pz - 1)) & (-pz);
+
+ if (!fanout) {
+ /* Single socket is in use. Use 1 block with buf_num frames. */
+ ring->req.tp_block_nr = 1;
+ } else {
+ /* Fanout is in use, more likely taffic split accodring to
+ * number of cpu threads. Use cpu blocks and buf_num frames. */
+ ring->req.tp_block_nr = odp_cpu_count();
+ }
+
+ ring->req.tp_frame_nr = ring->req.tp_block_size /
+ ring->req.tp_frame_size * ring->req.tp_block_nr;
+
+ ring->mm_len = ring->req.tp_block_size * ring->req.tp_block_nr;
+ ring->rd_num = ring->req.tp_frame_nr;
+ ring->flen = ring->req.tp_frame_size;
+}
+
+static int mmap_set_packet_loss_discard(int sock)
+{
+ int ret, discard = 1;
+
+ ret = setsockopt(sock, SOL_PACKET, PACKET_LOSS, (void *)&discard,
+ sizeof(discard));
+ if (ret == -1) {
+ __odp_errno = errno;
+ ODP_ERR("setsockopt(PACKET_LOSS): %s\n", strerror(errno));
+ return -1;
+ }
+
+ return 0;
+}
+
+static int mmap_setup_ring(int sock, struct ring *ring, int type,
+ odp_pool_t pool_hdl, int fanout)
+{
+ int ret = 0;
+
+ ring->sock = sock;
+ ring->type = type;
+ ring->version = TPACKET_V2;
+
+ if (type == PACKET_TX_RING) {
+ ret = mmap_set_packet_loss_discard(sock);
+ if (ret != 0)
+ return -1;
+ }
+
+ mmap_fill_ring(ring, pool_hdl, fanout);
+
+ ret = setsockopt(sock, SOL_PACKET, type, &ring->req, sizeof(ring->req));
+ if (ret == -1) {
+ __odp_errno = errno;
+ ODP_ERR("setsockopt(pkt mmap): %s\n", strerror(errno));
+ return -1;
+ }
+
+ ring->rd_len = ring->rd_num * sizeof(*ring->rd);
+ ring->rd = malloc(ring->rd_len);
+ if (!ring->rd) {
+ __odp_errno = errno;
+ ODP_ERR("malloc(): %s\n", strerror(errno));
+ return -1;
+ }
+
+ return 0;
+}
+
+static int mmap_sock(pkt_sock_mmap_t *pkt_sock)
+{
+ int i;
+ int sock = pkt_sock->sockfd;
+
+ /* map rx + tx buffer to userspace : they are in this order */
+ pkt_sock->mmap_len =
+ pkt_sock->rx_ring.req.tp_block_size *
+ pkt_sock->rx_ring.req.tp_block_nr +
+ pkt_sock->tx_ring.req.tp_block_size *
+ pkt_sock->tx_ring.req.tp_block_nr;
+
+ pkt_sock->mmap_base =
+ mmap(NULL, pkt_sock->mmap_len, PROT_READ | PROT_WRITE,
+ MAP_SHARED | MAP_LOCKED | MAP_POPULATE, sock, 0);
+
+ if (pkt_sock->mmap_base == MAP_FAILED) {
+ __odp_errno = errno;
+ ODP_ERR("mmap rx&tx buffer failed: %s\n", strerror(errno));
+ return -1;
+ }
+
+ pkt_sock->rx_ring.mm_space = pkt_sock->mmap_base;
+ memset(pkt_sock->rx_ring.rd, 0, pkt_sock->rx_ring.rd_len);
+ for (i = 0; i < pkt_sock->rx_ring.rd_num; ++i) {
+ pkt_sock->rx_ring.rd[i].iov_base =
+ pkt_sock->rx_ring.mm_space
+ + (i * pkt_sock->rx_ring.flen);
+ pkt_sock->rx_ring.rd[i].iov_len = pkt_sock->rx_ring.flen;
+ }
+
+ pkt_sock->tx_ring.mm_space =
+ pkt_sock->mmap_base + pkt_sock->rx_ring.mm_len;
+ memset(pkt_sock->tx_ring.rd, 0, pkt_sock->tx_ring.rd_len);
+ for (i = 0; i < pkt_sock->tx_ring.rd_num; ++i) {
+ pkt_sock->tx_ring.rd[i].iov_base =
+ pkt_sock->tx_ring.mm_space
+ + (i * pkt_sock->tx_ring.flen);
+ pkt_sock->tx_ring.rd[i].iov_len = pkt_sock->tx_ring.flen;
+ }
+
+ return 0;
+}
+
+static void mmap_unmap_sock(pkt_sock_mmap_t *pkt_sock)
+{
+ munmap(pkt_sock->mmap_base, pkt_sock->mmap_len);
+ free(pkt_sock->rx_ring.rd);
+ free(pkt_sock->tx_ring.rd);
+}
+
+static int mmap_bind_sock(pkt_sock_mmap_t *pkt_sock, const char *netdev)
+{
+ int ret;
+
+ pkt_sock->ll.sll_family = PF_PACKET;
+ pkt_sock->ll.sll_protocol = htons(ETH_P_ALL);
+ pkt_sock->ll.sll_ifindex = if_nametoindex(netdev);
+ pkt_sock->ll.sll_hatype = 0;
+ pkt_sock->ll.sll_pkttype = 0;
+ pkt_sock->ll.sll_halen = 0;
+
+ ret = bind(pkt_sock->sockfd, (struct sockaddr *)&pkt_sock->ll,
+ sizeof(pkt_sock->ll));
+ if (ret == -1) {
+ __odp_errno = errno;
+ ODP_ERR("bind(to IF): %s\n", strerror(errno));
+ return -1;
+ }
+
+ return 0;
+}
+
+static int mmap_store_hw_addr(pkt_sock_mmap_t *const pkt_sock,
+ const char *netdev)
+{
+ struct ifreq ethreq;
+ int ret;
+
+ /* get MAC address */
+ memset(ðreq, 0, sizeof(ethreq));
+ snprintf(ethreq.ifr_name, IF_NAMESIZE, "%s", netdev);
+ ret = ioctl(pkt_sock->sockfd, SIOCGIFHWADDR, ðreq);
+ if (ret != 0) {
+ __odp_errno = errno;
+ ODP_ERR("ioctl(SIOCGIFHWADDR): %s: \"%s\".\n",
+ strerror(errno),
+ ethreq.ifr_name);
+ return -1;
+ }
+
+ ethaddr_copy(pkt_sock->if_mac,
+ (unsigned char *)ethreq.ifr_ifru.ifru_hwaddr.sa_data);
+
+ return 0;
+}
+
+int setup_pkt_sock_mmap(pkt_sock_mmap_t *const pkt_sock, const char *netdev,
+ odp_pool_t pool, int fanout)
+{
+ int if_idx;
+ int ret = 0;
+
+ memset(pkt_sock, 0, sizeof(*pkt_sock));
+
+ if (pool == ODP_POOL_INVALID)
+ return -1;
+
+ /* Store eth buffer offset for pkt buffers from this pool */
+ pkt_sock->frame_offset = 0;
+
+ pkt_sock->pool = pool;
+ pkt_sock->sockfd = mmap_pkt_socket();
+ if (pkt_sock->sockfd == -1)
+ return -1;
+
+ ret = mmap_bind_sock(pkt_sock, netdev);
+ if (ret != 0)
+ return -1;
+
+ ret = mmap_setup_ring(pkt_sock->sockfd, &pkt_sock->tx_ring,
+ PACKET_TX_RING, pool, fanout);
+ if (ret != 0)
+ return -1;
+
+ ret = mmap_setup_ring(pkt_sock->sockfd, &pkt_sock->rx_ring,
+ PACKET_RX_RING, pool, fanout);
+ if (ret != 0)
+ return -1;
+
+ ret = mmap_sock(pkt_sock);
+ if (ret != 0)
+ return -1;
+
+ ret = mmap_store_hw_addr(pkt_sock, netdev);
+ if (ret != 0)
+ return -1;
+
+ if_idx = if_nametoindex(netdev);
+ if (if_idx == 0) {
+ __odp_errno = errno;
+ ODP_ERR("if_nametoindex(): %s\n", strerror(errno));
+ return -1;
+ }
+
+ pkt_sock->fanout = fanout;
+ if (fanout) {
+ ret = set_pkt_sock_fanout_mmap(pkt_sock, if_idx);
+ if (ret != 0)
+ return -1;
+ }
+
+ return pkt_sock->sockfd;
+}
+
+int close_pkt_sock_mmap(pkt_sock_mmap_t *const pkt_sock)
+{
+ mmap_unmap_sock(pkt_sock);
+ if (pkt_sock->sockfd != -1 && close(pkt_sock->sockfd) != 0) {
+ __odp_errno = errno;
+ ODP_ERR("close(sockfd): %s\n", strerror(errno));
+ return -1;
+ }
+
+ return 0;
+}
+
+int recv_pkt_sock_mmap(pkt_sock_mmap_t *const pkt_sock,
+ odp_packet_t pkt_table[], unsigned len)
+{
+ return pkt_mmap_v2_rx(pkt_sock->rx_ring.sock, &pkt_sock->rx_ring,
+ pkt_table, len, pkt_sock->pool,
+ pkt_sock->if_mac);
+}
+
+int send_pkt_sock_mmap(pkt_sock_mmap_t *const pkt_sock,
+ odp_packet_t pkt_table[], unsigned len)
+{
+ return pkt_mmap_v2_tx(pkt_sock->tx_ring.sock, &pkt_sock->tx_ring,
+ pkt_table, len);
+}
--
2.4.5.3.g4915f6f
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