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References: <20200511112831.25549-1-m.bilal@emumba.com>
<20200512135637.13500-1-m.bilal@emumba.com>
In-Reply-To: <20200512135637.13500-1-m.bilal@emumba.com>
From: Muhammad Bilal <m.bilal@emumba.com>
Date: Fri, 5 Jun 2020 17:01:06 +0500
Message-ID: <CAOFC0T1kGZcC0FOt9Z4Zpa+FoQmoaA9jAaUr+ga9js1v2MWfUA@mail.gmail.com>
To: bruce.richardson@intel.com
Cc: dev@dpdk.org, stable@dpdk.org, vipin.varghese@intel.com,
jgrajcia@cisco.com
Content-Type: text/plain; charset="UTF-8"
Subject: Re: [dpdk-dev] [PATCH v2] examples/l2fwd: free resources in case of
error
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Is there anything else to be done for acceptance? So that this problem
can be removed from other examples.
On Tue, May 12, 2020 at 6:57 PM Muhammad Bilal <m.bilal@emumba.com> wrote:
>
> Bugzilla ID: 437
> Cc: dev@dpdk.org
> Cc: stable@dpdk.org
> Cc: bruce.richardson@intel.com
> Cc: vipin.varghese@intel.com
> Cc: jgrajcia@cisco.com
> Signed-off-by: Muhammad Bilal <m.bilal@emumba.com>
> ---
> examples/l2fwd/main.c | 76 ++++++++++++++++++++++++++++++++++---------
> 1 file changed, 60 insertions(+), 16 deletions(-)
>
> diff --git a/examples/l2fwd/main.c b/examples/l2fwd/main.c
> index 88ddfe589..efea2dce3 100644
> --- a/examples/l2fwd/main.c
> +++ b/examples/l2fwd/main.c
> @@ -517,6 +517,18 @@ signal_handler(int signum)
> }
> }
>
> +static void
> +stop_and_close_eth_dev(uint16_t portid)
> +{
> + RTE_ETH_FOREACH_DEV(portid) {
> + printf("Closing port %d...", portid);
> + rte_eth_dev_stop(portid);
> + rte_eth_dev_close(portid);
> + printf(" Done\n");
> + rte_eal_cleanup();
> + }
> +}
> +
> int
> main(int argc, char **argv)
> {
> @@ -524,7 +536,8 @@ main(int argc, char **argv)
> int ret;
> uint16_t nb_ports;
> uint16_t nb_ports_available = 0;
> - uint16_t portid, last_port;
> + uint16_t portid = 0;
> + uint16_t last_port;
> unsigned lcore_id, rx_lcore_id;
> unsigned nb_ports_in_mask = 0;
> unsigned int nb_lcores = 0;
> @@ -543,8 +556,10 @@ main(int argc, char **argv)
>
> /* parse application arguments (after the EAL ones) */
> ret = l2fwd_parse_args(argc, argv);
> - if (ret < 0)
> + if (ret < 0) {
> + stop_and_close_eth_dev(portid);
> rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
> + }
>
> printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled");
>
> @@ -552,13 +567,17 @@ main(int argc, char **argv)
> timer_period *= rte_get_timer_hz();
>
> nb_ports = rte_eth_dev_count_avail();
> - if (nb_ports == 0)
> + if (nb_ports == 0) {
> + stop_and_close_eth_dev(portid);
> rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
> + }
>
> /* check port mask to possible port mask */
> - if (l2fwd_enabled_port_mask & ~((1 << nb_ports) - 1))
> + if (l2fwd_enabled_port_mask & ~((1 << nb_ports) - 1)) {
> + stop_and_close_eth_dev(portid);
> rte_exit(EXIT_FAILURE, "Invalid portmask; possible (0x%x)\n",
> (1 << nb_ports) - 1);
> + }
>
> /* reset l2fwd_dst_ports */
> for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
> @@ -601,8 +620,10 @@ main(int argc, char **argv)
> lcore_queue_conf[rx_lcore_id].n_rx_port ==
> l2fwd_rx_queue_per_lcore) {
> rx_lcore_id++;
> - if (rx_lcore_id >= RTE_MAX_LCORE)
> + if (rx_lcore_id >= RTE_MAX_LCORE) {
> + stop_and_close_eth_dev(portid);
> rte_exit(EXIT_FAILURE, "Not enough cores\n");
> + }
> }
>
> if (qconf != &lcore_queue_conf[rx_lcore_id]) {
> @@ -623,8 +644,10 @@ main(int argc, char **argv)
> l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", nb_mbufs,
> MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE,
> rte_socket_id());
> - if (l2fwd_pktmbuf_pool == NULL)
> + if (l2fwd_pktmbuf_pool == NULL) {
> + stop_and_close_eth_dev(portid);
> rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
> + }
>
> /* Initialise each port */
> RTE_ETH_FOREACH_DEV(portid) {
> @@ -645,32 +668,40 @@ main(int argc, char **argv)
> fflush(stdout);
>
> ret = rte_eth_dev_info_get(portid, &dev_info);
> - if (ret != 0)
> + if (ret != 0) {
> + stop_and_close_eth_dev(portid);
> rte_exit(EXIT_FAILURE,
> "Error during getting device (port %u) info: %s\n",
> portid, strerror(-ret));
> + }
>
> if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
> local_port_conf.txmode.offloads |=
> DEV_TX_OFFLOAD_MBUF_FAST_FREE;
> ret = rte_eth_dev_configure(portid, 1, 1, &local_port_conf);
> - if (ret < 0)
> + if (ret < 0) {
> + stop_and_close_eth_dev(portid);
> rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
> ret, portid);
> + }
>
> ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
> &nb_txd);
> - if (ret < 0)
> + if (ret < 0) {
> + stop_and_close_eth_dev(portid);
> rte_exit(EXIT_FAILURE,
> "Cannot adjust number of descriptors: err=%d, port=%u\n",
> ret, portid);
> + }
>
> ret = rte_eth_macaddr_get(portid,
> &l2fwd_ports_eth_addr[portid]);
> - if (ret < 0)
> + if (ret < 0) {
> + stop_and_close_eth_dev(portid);
> rte_exit(EXIT_FAILURE,
> "Cannot get MAC address: err=%d, port=%u\n",
> ret, portid);
> + }
>
> /* init one RX queue */
> fflush(stdout);
> @@ -680,9 +711,11 @@ main(int argc, char **argv)
> rte_eth_dev_socket_id(portid),
> &rxq_conf,
> l2fwd_pktmbuf_pool);
> - if (ret < 0)
> + if (ret < 0) {
> + stop_and_close_eth_dev(portid);
> rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
> ret, portid);
> + }
>
> /* init one TX queue on each port */
> fflush(stdout);
> @@ -691,27 +724,33 @@ main(int argc, char **argv)
> ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
> rte_eth_dev_socket_id(portid),
> &txq_conf);
> - if (ret < 0)
> + if (ret < 0) {
> + stop_and_close_eth_dev(portid);
> rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
> ret, portid);
> + }
>
> /* Initialize TX buffers */
> tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
> RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
> rte_eth_dev_socket_id(portid));
> - if (tx_buffer[portid] == NULL)
> + if (tx_buffer[portid] == NULL) {
> + stop_and_close_eth_dev(portid);
> rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
> portid);
> + }
>
> rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
>
> ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
> rte_eth_tx_buffer_count_callback,
> &port_statistics[portid].dropped);
> - if (ret < 0)
> + if (ret < 0) {
> + stop_and_close_eth_dev(portid);
> rte_exit(EXIT_FAILURE,
> "Cannot set error callback for tx buffer on port %u\n",
> portid);
> + }
>
> ret = rte_eth_dev_set_ptypes(portid, RTE_PTYPE_UNKNOWN, NULL,
> 0);
> @@ -720,17 +759,21 @@ main(int argc, char **argv)
> portid);
> /* Start device */
> ret = rte_eth_dev_start(portid);
> - if (ret < 0)
> + if (ret < 0) {
> + stop_and_close_eth_dev(portid);
> rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
> ret, portid);
> + }
>
> printf("done: \n");
>
> ret = rte_eth_promiscuous_enable(portid);
> - if (ret != 0)
> + if (ret != 0) {
> + stop_and_close_eth_dev(portid);
> rte_exit(EXIT_FAILURE,
> "rte_eth_promiscuous_enable:err=%s, port=%u\n",
> rte_strerror(-ret), portid);
> + }
>
> printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
> portid,
> @@ -746,6 +789,7 @@ main(int argc, char **argv)
> }
>
> if (!nb_ports_available) {
> + stop_and_close_eth_dev(portid);
> rte_exit(EXIT_FAILURE,
> "All available ports are disabled. Please set portmask.\n");
> }
> --
> 2.17.1
>