05a8e4a35d
When setup tx queues, we will create a mempool for the 'gso_ctx'.
The mempool is not freed when closing tap device. If free the tap
device and create it with different name, it will create a new
mempool. This maybe cause an OOM.
The snprintf function return value is not checked and the mempool
name may be truncated. This patch also fix it.
Fixes: 050316a883 ("net/tap: support TSO (TCP Segment Offload)")
Cc: stable@dpdk.org
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Reviewed-by: Ferruh Yigit <ferruh.yigit@intel.com>
107 lines
4.0 KiB
C
107 lines
4.0 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright 2017 6WIND S.A.
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* Copyright 2017 Mellanox Technologies, Ltd
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*/
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#ifndef _RTE_ETH_TAP_H_
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#define _RTE_ETH_TAP_H_
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#include <sys/queue.h>
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#include <sys/uio.h>
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#include <inttypes.h>
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#include <net/if.h>
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#include <linux/if_tun.h>
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#include <rte_ethdev_driver.h>
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#include <rte_ether.h>
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#include <rte_gso.h>
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#include "tap_log.h"
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#ifdef IFF_MULTI_QUEUE
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#define RTE_PMD_TAP_MAX_QUEUES TAP_MAX_QUEUES
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#else
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#define RTE_PMD_TAP_MAX_QUEUES 1
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#endif
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#define MAX_GSO_MBUFS 64
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enum rte_tuntap_type {
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ETH_TUNTAP_TYPE_UNKNOWN,
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ETH_TUNTAP_TYPE_TUN,
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ETH_TUNTAP_TYPE_TAP,
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ETH_TUNTAP_TYPE_MAX,
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};
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struct pkt_stats {
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uint64_t opackets; /* Number of output packets */
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uint64_t ipackets; /* Number of input packets */
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uint64_t obytes; /* Number of bytes on output */
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uint64_t ibytes; /* Number of bytes on input */
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uint64_t errs; /* Number of TX error packets */
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uint64_t ierrors; /* Number of RX error packets */
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uint64_t rx_nombuf; /* Nb of RX mbuf alloc failures */
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};
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struct rx_queue {
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struct rte_mempool *mp; /* Mempool for RX packets */
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uint32_t trigger_seen; /* Last seen Rx trigger value */
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uint16_t in_port; /* Port ID */
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uint16_t queue_id; /* queue ID*/
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struct pkt_stats stats; /* Stats for this RX queue */
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uint16_t nb_rx_desc; /* max number of mbufs available */
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struct rte_eth_rxmode *rxmode; /* RX features */
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struct rte_mbuf *pool; /* mbufs pool for this queue */
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struct iovec (*iovecs)[]; /* descriptors for this queue */
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struct tun_pi pi; /* packet info for iovecs */
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};
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struct tx_queue {
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int type; /* Type field - TUN|TAP */
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uint16_t *mtu; /* Pointer to MTU from dev_data */
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uint16_t csum:1; /* Enable checksum offloading */
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struct pkt_stats stats; /* Stats for this TX queue */
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struct rte_gso_ctx gso_ctx; /* GSO context */
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uint16_t out_port; /* Port ID */
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uint16_t queue_id; /* queue ID*/
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};
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struct pmd_internals {
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struct rte_eth_dev *dev; /* Ethernet device. */
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char remote_iface[RTE_ETH_NAME_MAX_LEN]; /* Remote netdevice name */
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char name[RTE_ETH_NAME_MAX_LEN]; /* Internal Tap device name */
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int type; /* Type field - TUN|TAP */
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struct rte_ether_addr eth_addr; /* Mac address of the device port */
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struct ifreq remote_initial_flags;/* Remote netdevice flags on init */
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int remote_if_index; /* remote netdevice IF_INDEX */
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int if_index; /* IF_INDEX for the port */
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int ioctl_sock; /* socket for ioctl calls */
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int nlsk_fd; /* Netlink socket fd */
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int flow_isolate; /* 1 if flow isolation is enabled */
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int flower_support; /* 1 if kernel supports, else 0 */
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int flower_vlan_support; /* 1 if kernel supports, else 0 */
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int rss_enabled; /* 1 if RSS is enabled, else 0 */
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/* implicit rules set when RSS is enabled */
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int map_fd; /* BPF RSS map fd */
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int bpf_fd[RTE_PMD_TAP_MAX_QUEUES];/* List of bpf fds per queue */
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LIST_HEAD(tap_rss_flows, rte_flow) rss_flows;
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LIST_HEAD(tap_flows, rte_flow) flows; /* rte_flow rules */
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/* implicit rte_flow rules set when a remote device is active */
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LIST_HEAD(tap_implicit_flows, rte_flow) implicit_flows;
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struct rx_queue rxq[RTE_PMD_TAP_MAX_QUEUES]; /* List of RX queues */
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struct tx_queue txq[RTE_PMD_TAP_MAX_QUEUES]; /* List of TX queues */
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struct rte_intr_handle intr_handle; /* LSC interrupt handle. */
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int ka_fd; /* keep-alive file descriptor */
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struct rte_mempool *gso_ctx_mp; /* Mempool for GSO packets */
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};
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struct pmd_process_private {
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int rxq_fds[RTE_PMD_TAP_MAX_QUEUES];
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int txq_fds[RTE_PMD_TAP_MAX_QUEUES];
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};
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/* tap_intr.c */
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int tap_rx_intr_vec_set(struct rte_eth_dev *dev, int set);
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#endif /* _RTE_ETH_TAP_H_ */
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