From 8ffda7673fa71e6a666963fc0ea4969d65dd09da Mon Sep 17 00:00:00 2001 From: Ido Goshen Date: Tue, 19 Jun 2018 17:37:25 +0300 Subject: [PATCH] net/pcap: fix multiple queues Change open_rx/tx_pcap/iface functions to open only a single pcap/dumper and not loop num_of_queue times The num_of_queue loop is already achieved by the caller rte_kvargs_process Fixing: 1. Opens N requested pcaps/dumpers instead of N^2 2. Leak of pcap/dumper's which are being overwritten by the sequential calls to open_rx/tx_pcap/iface functions 3. Use the filename/iface args per queue and not just the last one that overwrites the previous names Fixes: 4c173302c307 ("pcap: add new driver") Cc: stable@dpdk.org Signed-off-by: Ido Goshen Acked-by: Ferruh Yigit --- drivers/net/pcap/rte_eth_pcap.c | 86 ++++++++++++++------------------- 1 file changed, 36 insertions(+), 50 deletions(-) diff --git a/drivers/net/pcap/rte_eth_pcap.c b/drivers/net/pcap/rte_eth_pcap.c index 6bd4a7d79a..b4f81acce9 100644 --- a/drivers/net/pcap/rte_eth_pcap.c +++ b/drivers/net/pcap/rte_eth_pcap.c @@ -665,19 +665,19 @@ static const struct eth_dev_ops ops = { static int open_rx_pcap(const char *key, const char *value, void *extra_args) { - unsigned int i; const char *pcap_filename = value; struct pmd_devargs *rx = extra_args; pcap_t *pcap = NULL; - for (i = 0; i < rx->num_of_queue; i++) { - if (open_single_rx_pcap(pcap_filename, &pcap) < 0) - return -1; + if (rx->num_of_queue >= RTE_PMD_PCAP_MAX_QUEUES) + return -1; + if (open_single_rx_pcap(pcap_filename, &pcap) < 0) + return -1; - rx->queue[i].pcap = pcap; - rx->queue[i].name = pcap_filename; - rx->queue[i].type = key; - } + rx->queue[rx->num_of_queue].pcap = pcap; + rx->queue[rx->num_of_queue].name = pcap_filename; + rx->queue[rx->num_of_queue].type = key; + rx->num_of_queue++; return 0; } @@ -689,19 +689,19 @@ open_rx_pcap(const char *key, const char *value, void *extra_args) static int open_tx_pcap(const char *key, const char *value, void *extra_args) { - unsigned int i; const char *pcap_filename = value; struct pmd_devargs *dumpers = extra_args; pcap_dumper_t *dumper; - for (i = 0; i < dumpers->num_of_queue; i++) { - if (open_single_tx_pcap(pcap_filename, &dumper) < 0) - return -1; + if (dumpers->num_of_queue >= RTE_PMD_PCAP_MAX_QUEUES) + return -1; + if (open_single_tx_pcap(pcap_filename, &dumper) < 0) + return -1; - dumpers->queue[i].dumper = dumper; - dumpers->queue[i].name = pcap_filename; - dumpers->queue[i].type = key; - } + dumpers->queue[dumpers->num_of_queue].dumper = dumper; + dumpers->queue[dumpers->num_of_queue].name = pcap_filename; + dumpers->queue[dumpers->num_of_queue].type = key; + dumpers->num_of_queue++; return 0; } @@ -732,18 +732,18 @@ open_rx_tx_iface(const char *key, const char *value, void *extra_args) static inline int open_rx_iface(const char *key, const char *value, void *extra_args) { - unsigned int i; const char *iface = value; struct pmd_devargs *rx = extra_args; pcap_t *pcap = NULL; - for (i = 0; i < rx->num_of_queue; i++) { - if (open_single_iface(iface, &pcap) < 0) - return -1; - rx->queue[i].pcap = pcap; - rx->queue[i].name = iface; - rx->queue[i].type = key; - } + if (rx->num_of_queue >= RTE_PMD_PCAP_MAX_QUEUES) + return -1; + if (open_single_iface(iface, &pcap) < 0) + return -1; + rx->queue[rx->num_of_queue].pcap = pcap; + rx->queue[rx->num_of_queue].name = iface; + rx->queue[rx->num_of_queue].type = key; + rx->num_of_queue++; return 0; } @@ -754,18 +754,18 @@ open_rx_iface(const char *key, const char *value, void *extra_args) static int open_tx_iface(const char *key, const char *value, void *extra_args) { - unsigned int i; const char *iface = value; struct pmd_devargs *tx = extra_args; pcap_t *pcap; - for (i = 0; i < tx->num_of_queue; i++) { - if (open_single_iface(iface, &pcap) < 0) - return -1; - tx->queue[i].pcap = pcap; - tx->queue[i].name = iface; - tx->queue[i].type = key; - } + if (tx->num_of_queue >= RTE_PMD_PCAP_MAX_QUEUES) + return -1; + if (open_single_iface(iface, &pcap) < 0) + return -1; + tx->queue[tx->num_of_queue].pcap = pcap; + tx->queue[tx->num_of_queue].name = iface; + tx->queue[tx->num_of_queue].type = key; + tx->num_of_queue++; return 0; } @@ -958,15 +958,8 @@ pmd_pcap_probe(struct rte_vdev_device *dev) * We check whether we want to open a RX stream from a real NIC or a * pcap file */ - pcaps.num_of_queue = rte_kvargs_count(kvlist, ETH_PCAP_RX_PCAP_ARG); - if (pcaps.num_of_queue) - is_rx_pcap = 1; - else - pcaps.num_of_queue = rte_kvargs_count(kvlist, - ETH_PCAP_RX_IFACE_ARG); - - if (pcaps.num_of_queue > RTE_PMD_PCAP_MAX_QUEUES) - pcaps.num_of_queue = RTE_PMD_PCAP_MAX_QUEUES; + is_rx_pcap = rte_kvargs_count(kvlist, ETH_PCAP_RX_PCAP_ARG) ? 1 : 0; + pcaps.num_of_queue = 0; if (is_rx_pcap) ret = rte_kvargs_process(kvlist, ETH_PCAP_RX_PCAP_ARG, @@ -982,15 +975,8 @@ pmd_pcap_probe(struct rte_vdev_device *dev) * We check whether we want to open a TX stream to a real NIC or a * pcap file */ - dumpers.num_of_queue = rte_kvargs_count(kvlist, ETH_PCAP_TX_PCAP_ARG); - if (dumpers.num_of_queue) - is_tx_pcap = 1; - else - dumpers.num_of_queue = rte_kvargs_count(kvlist, - ETH_PCAP_TX_IFACE_ARG); - - if (dumpers.num_of_queue > RTE_PMD_PCAP_MAX_QUEUES) - dumpers.num_of_queue = RTE_PMD_PCAP_MAX_QUEUES; + is_tx_pcap = rte_kvargs_count(kvlist, ETH_PCAP_TX_PCAP_ARG) ? 1 : 0; + dumpers.num_of_queue = 0; if (is_tx_pcap) ret = rte_kvargs_process(kvlist, ETH_PCAP_TX_PCAP_ARG, -- 2.20.1