[dpdk-dev] [Pktgen] [PATCH] pktgen_setup_packets: fix race for packet header
Wiles, Keith
keith.wiles at intel.com
Wed Sep 16 17:37:24 CEST 2015
Thanks the patch looks fine, but I have not had a lot of time to review it
detail. I hope to get to it next week after I return back home.
On 9/16/15, 2:09 AM, "Ilya Maximets" <i.maximets at samsung.com> wrote:
>Ping.
>
>On 09.09.2015 17:22, Ilya Maximets wrote:
>> While pktgen_setup_packets() all threads of one port uses same
>> info->seq_pkt. This leads to constructing packets in the same memory
>>region
>> (&pkt->hdr). As a result, pktgen_setup_packets generates random headers.
>>
>> Fix that by making a local copy of info->seq_pkt and using it for
>> constructing of packets.
>>
>> Signed-off-by: Ilya Maximets <i.maximets at samsung.com>
>> ---
>> app/pktgen-arp.c | 2 +-
>> app/pktgen-cmds.c | 40 ++++++++++++++++++++--------------------
>> app/pktgen-ipv4.c | 2 +-
>> app/pktgen.c | 39 +++++++++++++++++++++++++++------------
>> app/pktgen.h | 4 ++--
>> app/t/pktgen.t.c | 6 +++---
>> 6 files changed, 54 insertions(+), 39 deletions(-)
>>
>> diff --git a/app/pktgen-arp.c b/app/pktgen-arp.c
>> index c378880..b7040d7 100644
>> --- a/app/pktgen-arp.c
>> +++ b/app/pktgen-arp.c
>> @@ -190,7 +190,7 @@ pktgen_process_arp( struct rte_mbuf * m, uint32_t
>>pid, uint32_t vlan )
>>
>> rte_memcpy(&pkt->eth_dst_addr, &arp->sha, 6);
>> for (i = 0; i < info->seqCnt; i++)
>> - pktgen_packet_ctor(info, i, -1);
>> + pktgen_packet_ctor(info, i, -1, NULL);
>> }
>>
>> // Swap the two MAC addresses
>> diff --git a/app/pktgen-cmds.c b/app/pktgen-cmds.c
>> index da040e5..a6abb41 100644
>> --- a/app/pktgen-cmds.c
>> +++ b/app/pktgen-cmds.c
>> @@ -931,7 +931,7 @@ pktgen_set_proto(port_info_t * info, char type)
>> if ( type == 'i' )
>> info->seq_pkt[SINGLE_PKT].ethType = ETHER_TYPE_IPv4;
>>
>> - pktgen_packet_ctor(info, SINGLE_PKT, -1);
>> + pktgen_packet_ctor(info, SINGLE_PKT, -1, NULL);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> @@ -1067,7 +1067,7 @@ pktgen_set_pkt_type(port_info_t * info, const
>>char * type)
>> (type[3] == '6') ? ETHER_TYPE_IPv6 :
>> /* TODO print error: unknown type */ ETHER_TYPE_IPv4;
>>
>> - pktgen_packet_ctor(info, SINGLE_PKT, -1);
>> + pktgen_packet_ctor(info, SINGLE_PKT, -1, NULL);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> @@ -1092,7 +1092,7 @@ pktgen_set_vlan(port_info_t * info, uint32_t
>>onOff)
>> }
>> else
>> pktgen_clr_port_flags(info, SEND_VLAN_ID);
>> - pktgen_packet_ctor(info, SINGLE_PKT, -1);
>> + pktgen_packet_ctor(info, SINGLE_PKT, -1, NULL);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> @@ -1112,7 +1112,7 @@ pktgen_set_vlanid(port_info_t * info, uint16_t
>>vlanid)
>> {
>> info->vlanid = vlanid;
>> info->seq_pkt[SINGLE_PKT].vlanid = info->vlanid;
>> - pktgen_packet_ctor(info, SINGLE_PKT, -1);
>> + pktgen_packet_ctor(info, SINGLE_PKT, -1, NULL);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> @@ -1137,7 +1137,7 @@ pktgen_set_mpls(port_info_t * info, uint32_t
>>onOff)
>> }
>> else
>> pktgen_clr_port_flags(info, SEND_MPLS_LABEL);
>> - pktgen_packet_ctor(info, SINGLE_PKT, -1);
>> + pktgen_packet_ctor(info, SINGLE_PKT, -1, NULL);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> @@ -1157,7 +1157,7 @@ pktgen_set_mpls_entry(port_info_t * info,
>>uint32_t mpls_entry)
>> {
>> info->mpls_entry = mpls_entry;
>> info->seq_pkt[SINGLE_PKT].mpls_entry = info->mpls_entry;
>> - pktgen_packet_ctor(info, SINGLE_PKT, -1);
>> + pktgen_packet_ctor(info, SINGLE_PKT, -1, NULL);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> @@ -1182,7 +1182,7 @@ pktgen_set_qinq(port_info_t * info, uint32_t
>>onOff)
>> }
>> else
>> pktgen_clr_port_flags(info, SEND_Q_IN_Q_IDS);
>> - pktgen_packet_ctor(info, SINGLE_PKT, -1);
>> + pktgen_packet_ctor(info, SINGLE_PKT, -1, NULL);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> @@ -1204,7 +1204,7 @@ pktgen_set_qinqids(port_info_t * info, uint16_t
>>outerid, uint16_t innerid)
>> info->seq_pkt[SINGLE_PKT].qinq_outerid = info->qinq_outerid;
>> info->qinq_innerid = innerid;
>> info->seq_pkt[SINGLE_PKT].qinq_innerid = info->qinq_innerid;
>> - pktgen_packet_ctor(info, SINGLE_PKT, -1);
>> + pktgen_packet_ctor(info, SINGLE_PKT, -1, NULL);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> @@ -1228,7 +1228,7 @@ pktgen_set_gre(port_info_t * info, uint32_t onOff)
>> }
>> else
>> pktgen_clr_port_flags(info, SEND_GRE_IPv4_HEADER);
>> - pktgen_packet_ctor(info, SINGLE_PKT, -1);
>> + pktgen_packet_ctor(info, SINGLE_PKT, -1, NULL);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> @@ -1252,7 +1252,7 @@ pktgen_set_gre_eth(port_info_t * info, uint32_t
>>onOff)
>> }
>> else
>> pktgen_clr_port_flags(info, SEND_GRE_ETHER_HEADER);
>> - pktgen_packet_ctor(info, SINGLE_PKT, -1);
>> + pktgen_packet_ctor(info, SINGLE_PKT, -1, NULL);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> @@ -1272,7 +1272,7 @@ pktgen_set_gre_key(port_info_t * info, uint32_t
>>gre_key)
>> {
>> info->gre_key = gre_key;
>> info->seq_pkt[SINGLE_PKT].gre_key = info->gre_key;
>> - pktgen_packet_ctor(info, SINGLE_PKT, -1);
>> + pktgen_packet_ctor(info, SINGLE_PKT, -1, NULL);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> @@ -1401,7 +1401,7 @@ void pktgen_port_defaults(uint32_t pid, uint8_t
>>seq)
>> memset(&pkt->eth_dst_addr, 0, sizeof (pkt->eth_dst_addr));
>>
>>
>> - pktgen_packet_ctor(info, seq, -1);
>> + pktgen_packet_ctor(info, seq, -1, NULL);
>>
>> pktgen.flags |= PRINT_LABELS_FLAG;
>> }
>> @@ -1423,7 +1423,7 @@ void pktgen_ping4(port_info_t * info)
>> memcpy(&info->seq_pkt[PING_PKT],
>> &info->seq_pkt[SINGLE_PKT], sizeof(pkt_seq_t));
>> info->seq_pkt[PING_PKT].ipProto = PG_IPPROTO_ICMP;
>> - pktgen_packet_ctor(info, PING_PKT, ICMP4_ECHO);
>> + pktgen_packet_ctor(info, PING_PKT, ICMP4_ECHO, NULL);
>> pktgen_set_port_flags(info, SEND_PING4_REQUEST);
>> }
>>
>> @@ -1445,7 +1445,7 @@ void pktgen_ping6(port_info_t * info)
>> memcpy(&info->pkt[PING_PKT],
>> &info->pkt[SINGLE_PKT], sizeof(pkt_seq_t));
>> info->pkt[PING_PKT].ipProto = PG_IPPROTO_ICMP;
>> - pktgen_packet_ctor(info, PING_PKT, ICMP6_ECHO);
>> + pktgen_packet_ctor(info, PING_PKT, ICMP6_ECHO, NULL);
>> pktgen_set_port_flags(info, SEND_PING6_REQUEST);
>> }
>> #endif
>> @@ -1645,7 +1645,7 @@ void pktgen_set_pkt_size(port_info_t * info,
>>uint32_t size)
>> else if ( (size - FCS_SIZE) > MAX_PKT_SIZE)
>> size = MAX_PKT_SIZE + FCS_SIZE;
>> info->seq_pkt[SINGLE_PKT].pktSize = (size - FCS_SIZE);
>> - pktgen_packet_ctor(info, SINGLE_PKT, -1);
>> + pktgen_packet_ctor(info, SINGLE_PKT, -1, NULL);
>> pktgen_packet_rate(info);
>> }
>>
>> @@ -1667,7 +1667,7 @@ void pktgen_set_port_value(port_info_t * info,
>>char type, uint32_t portValue)
>> info->seq_pkt[SINGLE_PKT].dport = (uint16_t)portValue;
>> else
>> info->seq_pkt[SINGLE_PKT].sport = (uint16_t)portValue;
>> - pktgen_packet_ctor(info, SINGLE_PKT, -1);
>> + pktgen_packet_ctor(info, SINGLE_PKT, -1, NULL);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> @@ -1711,7 +1711,7 @@ void pktgen_set_ipaddr(port_info_t * info, char
>>type, cmdline_ipaddr_t * ip)
>> info->seq_pkt[SINGLE_PKT].ip_src_addr = ntohl(ip->addr.ipv4.s_addr);
>> } else
>> info->seq_pkt[SINGLE_PKT].ip_dst_addr = ntohl(ip->addr.ipv4.s_addr);
>> - pktgen_packet_ctor(info, SINGLE_PKT, -1);
>> + pktgen_packet_ctor(info, SINGLE_PKT, -1, NULL);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> @@ -1729,7 +1729,7 @@ void pktgen_set_ipaddr(port_info_t * info, char
>>type, cmdline_ipaddr_t * ip)
>> void pktgen_set_dst_mac(port_info_t * info, cmdline_etheraddr_t * mac)
>> {
>> memcpy(&info->seq_pkt[SINGLE_PKT].eth_dst_addr, mac->mac, 6);
>> - pktgen_packet_ctor(info, SINGLE_PKT, -1);
>> + pktgen_packet_ctor(info, SINGLE_PKT, -1, NULL);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> @@ -2111,7 +2111,7 @@ void pktgen_set_seq(port_info_t * info, uint32_t
>>seqnum,
>> type = '4';
>> pkt->ethType = (type == '6')? ETHER_TYPE_IPv6 : ETHER_TYPE_IPv4;
>> pkt->vlanid = vlanid;
>> - pktgen_packet_ctor(info, seqnum, -1);
>> + pktgen_packet_ctor(info, seqnum, -1, NULL);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> @@ -2156,7 +2156,7 @@ void pktgen_compile_pkt(port_info_t * info,
>>uint32_t seqnum,
>> (type == '6')? ETHER_TYPE_IPv6 :
>> (type == 'n')? ETHER_TYPE_VLAN : ETHER_TYPE_IPv4;
>> pkt->vlanid = vlanid;
>> - pktgen_packet_ctor(info, seqnum, -1);
>> + pktgen_packet_ctor(info, seqnum, -1, NULL);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> diff --git a/app/pktgen-ipv4.c b/app/pktgen-ipv4.c
>> index 7813c36..a8b6be2 100644
>> --- a/app/pktgen-ipv4.c
>> +++ b/app/pktgen-ipv4.c
>> @@ -138,7 +138,7 @@ pktgen_send_ping4( uint32_t pid, uint8_t seq_idx )
>> return;
>> }
>> *ppkt = *spkt; // Copy the sequence setup to the ping setup.
>> - pktgen_packet_ctor(info, PING_PKT, ICMP4_ECHO);
>> + pktgen_packet_ctor(info, PING_PKT, ICMP4_ECHO, NULL);
>> rte_memcpy((uint8_t *)m->buf_addr + m->data_off, (uint8_t
>>*)&ppkt->hdr, ppkt->pktSize);
>>
>> m->pkt_len = ppkt->pktSize;
>> diff --git a/app/pktgen.c b/app/pktgen.c
>> index 2dcdbfd..ecd4560 100644
>> --- a/app/pktgen.c
>> +++ b/app/pktgen.c
>> @@ -401,8 +401,8 @@ static __inline__ int pktgen_has_work(void) {
>> */
>>
>> void
>> -pktgen_packet_ctor(port_info_t * info, int32_t seq_idx, int32_t type) {
>> - pkt_seq_t * pkt = &info->seq_pkt[seq_idx];
>> +pktgen_packet_ctor(port_info_t * info, int32_t seq_idx, int32_t type,
>>pkt_seq_t * seq_pkt) {
>> + pkt_seq_t * pkt = (seq_pkt == NULL) ? &info->seq_pkt[seq_idx] :
>>&seq_pkt[seq_idx];
>> struct ether_hdr * eth = (struct ether_hdr *)&pkt->hdr.eth;
>> uint16_t tlen;
>>
>> @@ -812,22 +812,35 @@ static __inline__ void
>> pktgen_setup_packets(port_info_t * info, struct rte_mempool * mp,
>>uint16_t qid)
>> {
>> struct rte_mbuf * m, * mm;
>> - pkt_seq_t * pkt;
>> + pkt_seq_t * pkt, * seq_pkt = NULL;
>> + uint16_t seqIdx;
>> + char buff[RTE_MEMZONE_NAMESIZE];
>>
>> pktgen_clr_q_flags(info, qid, CLEAR_FAST_ALLOC_FLAG);
>>
>> if ( mp == info->q[qid].pcap_mp )
>> return;
>>
>> + snprintf(buff, sizeof(buff), "tmp_seq_pkt_%d_%d", info->pid, qid);
>> + seq_pkt = (pkt_seq_t *)rte_zmalloc(buff,
>> + (sizeof(pkt_seq_t) * NUM_TOTAL_PKTS), RTE_CACHE_LINE_SIZE);
>> + if (seq_pkt == NULL)
>> + pktgen_log_panic("Unable to allocate %d pkt_seq_t headers",
>> + NUM_TOTAL_PKTS);
>> + /* Copy global configuration to construct new packets locally */
>> + rte_memcpy((uint8_t *)seq_pkt, (uint8_t *)info->seq_pkt,
>> + sizeof(pkt_seq_t) * NUM_TOTAL_PKTS);
>> + seqIdx = info->seqIdx;
>> +
>> mm = NULL;
>> pkt = NULL;
>>
>> if ( mp == info->q[qid].tx_mp )
>> - pkt = &info->seq_pkt[SINGLE_PKT];
>> + pkt = &seq_pkt[SINGLE_PKT];
>> else if ( mp == info->q[qid].range_mp )
>> - pkt = &info->seq_pkt[RANGE_PKT];
>> + pkt = &seq_pkt[RANGE_PKT];
>> else if ( mp == info->q[qid].seq_mp )
>> - pkt = &info->seq_pkt[info->seqIdx];
>> + pkt = &seq_pkt[seqIdx];
>>
>> // allocate each mbuf and put them on a list to be freed.
>> for(;;) {
>> @@ -840,7 +853,7 @@ pktgen_setup_packets(port_info_t * info, struct
>>rte_mempool * mp, uint16_t qid)
>> mm = m;
>>
>> if ( mp == info->q[qid].tx_mp ) {
>> - pktgen_packet_ctor(info, SINGLE_PKT, -1);
>> + pktgen_packet_ctor(info, SINGLE_PKT, -1, seq_pkt);
>>
>> rte_memcpy((uint8_t *)m->buf_addr + m->data_off, (uint8_t
>>*)&pkt->hdr, MAX_PKT_SIZE);
>>
>> @@ -848,16 +861,16 @@ pktgen_setup_packets(port_info_t * info, struct
>>rte_mempool * mp, uint16_t qid)
>> m->data_len = pkt->pktSize;
>> } else if ( mp == info->q[qid].range_mp ) {
>> pktgen_range_ctor(&info->range, pkt);
>> - pktgen_packet_ctor(info, RANGE_PKT, -1);
>> + pktgen_packet_ctor(info, RANGE_PKT, -1, seq_pkt);
>>
>> rte_memcpy((uint8_t *)m->buf_addr + m->data_off, (uint8_t
>>*)&pkt->hdr, MAX_PKT_SIZE);
>>
>> m->pkt_len = pkt->pktSize;
>> m->data_len = pkt->pktSize;
>> } else if ( mp == info->q[qid].seq_mp ) {
>> - pktgen_packet_ctor(info, info->seqIdx++, -1);
>> - if ( unlikely(info->seqIdx >= info->seqCnt) )
>> - info->seqIdx = 0;
>> + pktgen_packet_ctor(info, seqIdx++, -1, seq_pkt);
>> + if ( unlikely(seqIdx >= info->seqCnt) )
>> + seqIdx = 0;
>>
>> rte_memcpy((uint8_t *)m->buf_addr + m->data_off, (uint8_t
>>*)&pkt->hdr, MAX_PKT_SIZE);
>>
>> @@ -865,12 +878,14 @@ pktgen_setup_packets(port_info_t * info, struct
>>rte_mempool * mp, uint16_t qid)
>> m->data_len = pkt->pktSize;
>>
>> // move to the next packet in the sequence.
>> - pkt = &info->seq_pkt[info->seqIdx];
>> + pkt = &seq_pkt[seqIdx];
>> }
>> }
>>
>> if ( mm != NULL )
>> rte_pktmbuf_free(mm);
>> +
>> + rte_free(seq_pkt);
>> }
>>
>>
>>/************************************************************************
>>**//**
>> diff --git a/app/pktgen.h b/app/pktgen.h
>> index 2c5c98c..f3f76f2 100644
>> --- a/app/pktgen.h
>> +++ b/app/pktgen.h
>> @@ -151,7 +151,7 @@
>> #include "pktgen-port-cfg.h"
>> #include "pktgen-capture.h"
>> #include "pktgen-log.h"
>> -
>> +#include "pktgen-seq.h"
>>
>> #define PKTGEN_VERSION "2.9.2"
>> #define PKTGEN_APP_NAME "Pktgen"
>> @@ -386,7 +386,7 @@ extern pktgen_t pktgen;
>>
>> extern void pktgen_page_display(__attribute__((unused)) struct
>>rte_timer *tim, __attribute__((unused)) void *arg);
>>
>> -extern void pktgen_packet_ctor(port_info_t * info, int32_t seq_idx,
>>int32_t type);
>> +extern void pktgen_packet_ctor(port_info_t * info, int32_t seq_idx,
>>int32_t type, pkt_seq_t * seq_pkt);
>> extern void pktgen_packet_rate(port_info_t * info);
>>
>> extern void pktgen_send_mbuf(struct rte_mbuf *m, uint8_t pid, uint16_t
>>qid);
>> diff --git a/app/t/pktgen.t.c b/app/t/pktgen.t.c
>> index 0eca4c4..77bf300 100644
>> --- a/app/t/pktgen.t.c
>> +++ b/app/t/pktgen.t.c
>> @@ -77,7 +77,7 @@ void test_pktgen_packet_ctor_IPv4_UDP(void)
>> };
>>
>>
>> - lives_ok( { pktgen_packet_ctor(&info, 0, 0); }, "pktgen_packet_ctor
>>must generate IPv4/UDP");
>> + lives_ok( { pktgen_packet_ctor(&info, 0, 0, NULL); },
>>"pktgen_packet_ctor must generate IPv4/UDP");
>>
>> note("... with Ethernet header");
>> cmp_mem_lit_incr(data, (0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd), " ...
>>with correct dest MAC");
>> @@ -133,9 +133,9 @@ void test_pktgen_packet_ctor_IPv4_GRE_Ether(void)
>> .pktSize = 102, // Subtract 4 for FCS
>> };
>>
>> - pktgen_packet_ctor(&info, 0, 0);
>> + pktgen_packet_ctor(&info, 0, 0, NULL);
>>
>> - lives_ok( { pktgen_packet_ctor(&info, 0, 0); }, "pktgen_packet_ctor
>>must generate IPv4 GRE Ethernet frame");
>> + lives_ok( { pktgen_packet_ctor(&info, 0, 0, NULL); },
>>"pktgen_packet_ctor must generate IPv4 GRE Ethernet frame");
>>
>> note("... with outer Ethernet header");
>> cmp_mem_lit_incr(data, (0xdd, 0xdd, 0xdd, 0xdd, 0xdd, 0xdd), " ...
>>with correct dest MAC");
>>
>
‹
Regards,
++Keith
Intel Corporation
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